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Design and Control of a Bionic Inspection Robot for Suspension Bridge Main Cables 认领 引用
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作者 Shengkai Liu Chao Wang +1 位作者 Xiaoqiang Yuan Ning Ding 《Journal of Bionic Engineering》 SCIE EI CSCD 2026年第1期159-174,共16页
The main cable is the primary load-bearing component of a suspension bridge,continuously exposed to harsh environmental conditions,such as wind and rain,throughout the year.These adverse conditions contribute to varyi... The main cable is the primary load-bearing component of a suspension bridge,continuously exposed to harsh environmental conditions,such as wind and rain,throughout the year.These adverse conditions contribute to varying degrees of degradation and damage to the main cable,necessitating regular inspections to prevent catastrophic failures.Traditional manual inspection methods not only suffer from low efficiency but also pose significant safety risks to personnel.To address these challenges and ensure the safe and effective inspection of suspension bridge main cables,this study introduces a novel cooperative climbing robot,designated as Main Cable Robot Version II(CCRobot-M-II),inspired by the locomotion of the inchworm.The robot employs an alternating opening and closing mechanism of four gripper sets,mimicking the inchworm's movement to achieve efficient crawling along the suspension bridge handrails.This paper provides a comprehensive analysis of the structural design,key components,and motion mechanisms of CCRobot-M-II.A detailed force analysis of the robot's crawling process is also presented,followed by the design of the control system and the development of an efficient motion control algorithm.Laboratory experiments demonstrate that the robot achieves a positional error of 00.64%during crawling,with a maximum average crawling speed of 7.6 m/min.Furthermore,the biomimetic design enables the robot to overcome obstacles up to 30 mm in height and possess the capability to handle suspension bridge cables with spans ranging from 740 to 1100 mm.Finally,CCRobot-M-II successfully conducted an inspection of the main cable on a suspension bridge,marking the world's first successful deployment of a climbing robot for main cable inspection on a suspension bridge. 展开更多
关键词 Bionic design Suspension bridge Main cable inspection Climbing robot Motion control
高端音响线材的设计秘密——专访Atlas Cables董事总经理Alan Whyte 认领 引用
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作者 晨光 Alan Whyte 《视听前线》 2026年第5期66-69,共4页
2026年4月10日,在SIAV2026的展会现场,上海确佳正式宣布成为英国苏格兰Atlas Cables的中国(含澳门地区)总代理,为国内发烧友带来原汁原味的苏格兰手工线材体验。AtlasCables董事总经理Alan Whyte先生也亲临现场,本刊记者与他进行了深入... 2026年4月10日,在SIAV2026的展会现场,上海确佳正式宣布成为英国苏格兰Atlas Cables的中国(含澳门地区)总代理,为国内发烧友带来原汁原味的苏格兰手工线材体验。AtlasCables董事总经理Alan Whyte先生也亲临现场,本刊记者与他进行了深入的交流。 展开更多
关键词 董事总经理 Atlas Cables 音响线材 专访
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Online Monitoring Technology for Local Discharge in Power Cables and Insulation Treatment Techniques 认领 引用
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作者 YANG Mei MENG Jie 《外文科技期刊数据库（文摘版）工程技术》 2026年第2期043-047,共5页
As the critical medium for electrical energy transmission, the reliability of power cables' insulation status directly impacts the safe and stable operation of power grids. Partial discharge serves as a key early ... As the critical medium for electrical energy transmission, the reliability of power cables' insulation status directly impacts the safe and stable operation of power grids. Partial discharge serves as a key early indicator of insulation degradation, making online monitoring and timely insulation treatment essential for enhancing cable asset management and preventing operational failures. This paper systematically outlines the application landscape, core advantages, and implementation considerations of online partial discharge monitoring technologies for power cables, while providing detailed analyses of monitoring point placement principles, signal acquisition methods, data management strategies, and equipment maintenance requirements. Furthermore, the study focuses on pivotal insulation treatment technologies, examining a comprehensive technical framework encompassing precise defect detection, on-site repair, enhanced protection measures, standardized processes, and effectiveness assurance—all aimed at delivering systematic technical references and decision support for power system operation and maintenance practices. 展开更多
关键词 power cable partial discharge online monitoring insulation treatment condition-based maintenance
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Nonlinear Resonance Response of Suspended Cables Under Multi-Frequency Excitations and Time-Delayed Feedback 认领 引用
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作者 Jian Peng Hui Xia +2 位作者 Lianhua Wang Xiaoyu Zhang Xianzhong Xie 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2025年第4期689-700,共12页
This study investigates the nonlinear resonance responses of suspended cables subjected to multi-frequency excitations and time-delayed feedback.Two specific combinations and simultaneous resonances are selected for d... This study investigates the nonlinear resonance responses of suspended cables subjected to multi-frequency excitations and time-delayed feedback.Two specific combinations and simultaneous resonances are selected for detailed examination.Initially,utilizing Hamilton’s variational principle,a nonlinear vibration control model of suspended cables under multi-frequency excitations and longitudinal time-delayed velocity feedback is developed,and the Galerkin method is employed to obtain the discrete model.Subsequently,focusing solely on single-mode discretization,analytical solutions for the two simultaneous resonances are derived using the method of multiple scales.The frequency response equations are derived,and the stability analysis is presented for two simultaneous resonance cases.The results demonstrate that suspended cables exhibit complex nonlinearity under multi-frequency excitations.Multiple solutions under multi-frequency excitation can be distinguished through the frequency–response and the detuning-phase curves.By adjusting the control gain and time delay,the resonance range,response amplitude,and phase of suspended cables can be modified. 展开更多
关键词 Suspended cables Multi-frequency excitation Time-delayed feedback Nonlinear resonance response
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Effect of Core Structure on the Mechanical and Electromagnetic Properties of High-Temperature Superconducting Cables 认领 引用 被引量：1
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作者 Jiangtao Yan Yuanwen Gao 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2025年第1期14-24,共11页
Research on the mechanical–electrical properties is crucial for designing and preparing high-temperature superconducting(HTS)cables.Various winding core structures can influence the mechanical–electrical behavior of... Research on the mechanical–electrical properties is crucial for designing and preparing high-temperature superconducting(HTS)cables.Various winding core structures can influence the mechanical–electrical behavior of cables,but the impact of alterations in the winding core structure on the mechanical–electrical behavior of superconducting cables remains unclear.This paper presents a 3D finite element model to predict the performance of three cables with different core structures when subjected to transverse compression and axial tension.The three cables analyzed are CORC(conductor-on-round-core),CORT(conductor-on-round-tube),and HFRC(conductor-on-spiral-tube).A parametric analysis is carried out by varying the core diameter and inner-to-outer diameter ratio.Results indicate that the CORT cable demonstrates better performance in transverse compression compared to the CORC cable,aligning with experimental data.Among the three cables,the HFRC cables exhibit the weakest resistance to transverse deformation.However,the HFRC cable demonstrates superior tensile deformation resistance compared to the CORT cable,provided that the transverse compression properties are maintained.Finite element results also show that the optimum inner-to-outer diameter ratios for achieving the best transverse compression performance are approximately 0.8 for CORT cables and 0.6 for HFRC cables.Meanwhile,the study explores the effect of structural changes in HTS cable winding cores on their electromagnetic properties.It recommends utilizing small tape gaps,lower frequencies,and spiral core construction to minimize eddy losses.The findings presented in this paper offer valuable insights for the commercialization and practical manufacturing of HTS cables. 展开更多
关键词 Superconducting cables Winding core structure Transverse compression Axial tension Eddy loss
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CableSAM:an efficient automatic segmentation method for aircraft cabin cables 认领 引用
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作者 LING Aihua WANG Junwen +1 位作者 LU Jiaming LIU Ruyu 《Optoelectronics Letters》 EI 2025年第3期183-187,共5页
Cabin cables,as critical components of an aircraft's electrical system,significantly impact the operational efficiency and safety of the aircraft.The existing cable segmentation methods in civil aviation cabins ar... Cabin cables,as critical components of an aircraft's electrical system,significantly impact the operational efficiency and safety of the aircraft.The existing cable segmentation methods in civil aviation cabins are limited,especially in automation,heavily dependent on large amounts of data and resources,lacking the flexibility to adapt to different scenarios.To address these challenges,this paper introduces a novel image segmentation model,CableSAM,specifically designed for automated segmentation of cabin cables.CableSAM improves segmentation efficiency and accuracy using knowledge distillation and employs a context ensemble strategy.It accurately segments cables in various scenarios with minimal input prompts.Comparative experiments on three cable datasets demonstrate that CableSAM surpasses other advanced cable segmentation methods in performance. 展开更多
关键词 image segmentation aircraft cabin automatic segmentation automated segmentation cabin cablesas civil aviation cabins cable segmentation knowledge distillation
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Nonlinear Dynamics of Variable-Length Marine Cables with Applications in the Simultaneous Navigation of USV-ROV Systems 认领 引用
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作者 WANG Jian-ming LEI Bo +2 位作者 HUANG Bo-lun YANG Qi LIU Jin-yang 《China Ocean Engineering》 SCIE EI CSCD 2025年第3期410-425,共16页
The integrated systems of unmanned surface vehicles(USVs) and remotely operated vehicles(ROVs) have been extensively applied in marine exploration and seabed coverage. However, the simultaneous navigation of USV-ROV s... The integrated systems of unmanned surface vehicles(USVs) and remotely operated vehicles(ROVs) have been extensively applied in marine exploration and seabed coverage. However, the simultaneous navigation of USV-ROV systems is frequently limited by strong disturbances induced by waves or currents. This paper develops a novel rigidflexible coupling multibody dynamic model that incorporates disturbances of variable-length marine cables with geometrically nonlinear motion. A hybrid Lagrangian-Eulerian absolute nodal coordinate formulation(ANCF) element is developed to accurately model subsea cables which undergo significant overall motion, substantial deformation,and mass flow during the deployment of underwater equipment. Furthermore, the governing equations of the coupled USV-umbilical-ROV system are derived, considering wave-induced forces and current disturbances. A numerical solver based on the Newmark-beta method is proposed, along with an adaptive meshing technique near the release point. After validating three experimental cases, the cable disturbances at both the USV and ROV ends—caused by ocean currents, heave motion, and simultaneous navigation—are comprehensively compared and evaluated. Finally,it is demonstrated that a PD controller with disturbance compensation can enhance the simultaneous navigation performance of USV-ROV systems. 展开更多
关键词 variable-length marine cable ANCF rigid-flexible coupling multibody dynamics PD controller with disturbance compensation USV-ROV system
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Recyclable insulation material for HVDC cables in Global Energy Interconnection 认领 引用 被引量：13
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作者 Yao Zhou Chao Yuan +2 位作者 Qi Li Qing Wang Jinliang He 《Global Energy Interconnection》 2018年第4期520-526,共7页
With the development of modern power systems,especially that of the global energy internet,high-voltage,direct current(HVDC)cable power transmission will play an important role in the future.The key problem of HVDC ca... With the development of modern power systems,especially that of the global energy internet,high-voltage,direct current(HVDC)cable power transmission will play an important role in the future.The key problem of HVDC cable power transmission is the need for novel cable insulation materials that have high performance,recyclability,and higher working temperature to replace traditional crosslinked polyethylene.This paper investigates the thermal and electrical properties of polypropylene(PP)/Al2O3 nanocomposites as a potential recyclable HVDC cable insulation material.The developed nanocomposites exhibit excellent thermal and electrical properties with the introduction of Al2O3 nanoparticles.Particularly,the space charge accumulation is greatly suppressed. 展开更多
关键词 Global Energy Internet Power transmission HVDC cables Eco-friendly insulation material
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New algorithm of shape-finding of suspension bridge with spatial cables 认领 引用 被引量：2
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作者 Xiao-Kang Deng Zhuo Deng Xin Ren 《Theoretical & Applied Mechanics Letters》 CAS CSCD 2023年第1期33-40,共8页
A new algorithm is proposed to solve the problems of shape-finding of suspension bridge with spatial cables what include tedious iteration,slow convergence speed and even no convergent under some circumstances.In this... A new algorithm is proposed to solve the problems of shape-finding of suspension bridge with spatial cables what include tedious iteration,slow convergence speed and even no convergent under some circumstances.In this paper,the stress analysis of the main cable is carried out,and the relationship between the slope change and the coordinate change is found.This paper also discussed how to find the minimum slope point of symmetrical or asymmetric main cable,and the deformation compatibility equation is established and solved to obtain the shape of main cable.The algorithm in this paper can ensure the convergence of the solution for the suspension bridge with spatial cables.The calculation accuracy is high through the demonstration of the calculation examples. 展开更多
关键词 Spatial cables Suspenders Shape-finding Slope of cable Coupling Unequal height main tower
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Nonlinear dynamic response of stay cables under axial harmonic excitation 认领 引用 被引量：2
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作者 Xu XIE He ZHANG Zhi-cheng ZHANG 《Journal of Zhejiang University-SCIENCE A》 SCIE EI CAS 2008年第9期1193-1200,共8页
This paper proposes a new numerical simulation method for analyzing the parametric vibration of stay cables based on the theory of nonlinear dynamic response of structures under the asynchronous support excitation. Th... This paper proposes a new numerical simulation method for analyzing the parametric vibration of stay cables based on the theory of nonlinear dynamic response of structures under the asynchronous support excitation. The effects of important pa- rameters related to parametric vibration of cables, i.e., characteristics of structure, excitation frequency, excitation amplitude, damping effect of the air and the viscous damping coefficient of the cables, were investigated by using the proposed method for the cables with significant length difference as examples. The analysis results show that nonlinear finite element method is a powerful technique in analyzing the parametric vibration of cables, the behavior of parametric vibration of the two cables with different Irvine parameters has similar properties, the amplitudes of parametric vibration of cables are related to the frequency and amplitude of harmonic support excitations and the effect of distributed viscous damping on parametric vibration of the cables is very small. 展开更多
关键词 Stay cables Parametric vibration Nonlinear vibration Viscous damping
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Exploring the feasibility of prestressed anchor cables as an alternative to temporary support in the excavation of super-large-span tunnel 认领 引用 被引量：1
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作者 Shunhua Zhou Yuyin Jin +3 位作者 Zhiyao Tian Chunhua Zou Heming Zhao Zengrun Miao 《Railway Engineering Science》 EI 2024年第3期344-360,共17页
Excavating super-large-span tunnels in soft rock masses presents significant challenges.To ensure safety,the sequential excavation method is commonly adopted.It utilizes internal temporary supports to spatially partit... Excavating super-large-span tunnels in soft rock masses presents significant challenges.To ensure safety,the sequential excavation method is commonly adopted.It utilizes internal temporary supports to spatially partition the tunnel face and divide the excavation into multiple stages.However,these internal supports generally impose spatial constraints,limiting the use of large-scale excavation equipment and reducing construction efficiency.To address this constraint,this study adopts the“Shed-frame”principle to explore the feasibility of an innovative support system,which aims to replace internal supports with prestressed anchor cables and thus provide a more spacious working space with fewer internal obstructions.To evaluate its effectiveness,a field case involving the excavation of a 24-m span tunnel in soft rock is presented,and an analysis of extensive field data is conducted to study the deformation characteristics of the surrounding rock and the mechanical behavior of the support system.The results revealed that prestressed anchor cables integrated the initial support with the shed,creating an effective“shed-frame”system,which successively maintained tunnel deformation and frame stress levels within safe regulatory bounds.Moreover,the prestressed anchor cables bolstered the surrounding rock effectively and reduced the excavation-induced disturbance zone significantly.In summary,the proposed support system balances construction efficiency and safety.These field experiences may offer valuable insights into the popularization and further development of prestressed anchor cable support systems. 展开更多
关键词 Super-large-span tunnel Construction safety Sequential excavation method Shed-frame principle Prestressed anchor cables
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Preparation of Self-limiting Heating Cables with Excellent Processability, Mechanical Properties and PTC Effect via Thermal and Electrical Treatments 认领 引用 被引量：1
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作者 Tian-Hao Yang Tong Wu Qiang Fu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2024年第4期511-520,共10页
Polymer/conductive filler composites have been widely used for the preparation of self-limiting heating cables with the positive temperature coefficient (PTC) effect. The control of conductive filler distribution and ... Polymer/conductive filler composites have been widely used for the preparation of self-limiting heating cables with the positive temperature coefficient (PTC) effect. The control of conductive filler distribution and network in polymer matrix is the most critical for performance of PTC materials. In order to compensate for the destruction of the filler network structure caused by strong shearing during processing, an excessive conductive filler content is usually added into the polymer matrix, which in turn sacrifices its processability and mechanical properties. In this work, a facile post-treatment of the as-extruded cable, including thermal and electrical treatment to produce high-density polyethylene (HDPE)/carbon black (CB) cable with excellent PTC effect, is developed. It is found for the as-extruded sample, the strong shearing makes the CB particles disperse uniformly in HDPE matrix, and 25 wt% CB is needed for the formation of conductive paths. For the thermal-treated sample, a gradually aggregated CB filler structure is observed, which leads to the improvement of PTC effect and the notable reduction of CB content to 20 wt%. It is very interesting to see that for the sample with combined thermal and electrical treatment, CB particles are agglomerated and oriented along the electric field direction to create substantial conductive paths, which leads to a further decrease of CB content down to 15 wt%. In this way, self-limiting heating cables with excellent processability, mechanical properties and PTC effect have simultaneously been achieved. 展开更多
关键词 Self-limiting heating cables Positive temperature coefficient Thermal treatment Electrical treatment
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高速数据传送与快速充电同步进行 Supra Cables Premium USB 3.2 Gen2 认领 引用
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《视听前线》 2025年第1期56-56,共1页
为全面切合新世代高清影音数据传输需求,依靠上乘质量力压同级对手的瑞典苏霸Supra Cables,正式推出新世代USB3.2规格线材,既拥有WGbps数据传输速度,还支持最高100WPD的PPS快充功能,难以匹敌的超凡性价比更是令人喜出望外。
关键词 数据传输速度 数据传送 USB 快速充电 Cable 新世代
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Steady-State Configuration and Tension Calculations of Marine Cables Under Complex Currents via Separated Particle Swarm Optimization? 认领 引用
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作者 徐雪松 《China Ocean Engineering》 SCIE EI CSCD 2014年第6期815-828,共14页
Under complex currents, the motion governing equations of marine cables are complex and nonlinear, and the calculations of cable configuration and tension become difficult compared with those under the uniform or simp... Under complex currents, the motion governing equations of marine cables are complex and nonlinear, and the calculations of cable configuration and tension become difficult compared with those under the uniform or simple currents. To obtain the numerical results, the usual Newton-Raphson iteration is often adopted, but its stability depends on the initial guessed solution to the governing equations. To improve the stability of numerical calculation, this paper proposed separated the particle swarm optimization, in which the variables are separated into several groups, and the dimension of search space is reduced to facilitate the particle swarm optimization. Via the separated particle swarm optimization, these governing nonlinear equations can be solved successfully with any initial solution, and the process of numerical calculation is very stable. For the calculations of cable configuration and tension of marine cables under complex currents, the proposed separated swarm particle optimization is more effective than the other particle swarm optimizations. 展开更多
关键词 nonlinear equations particle swarm optimization marine cables towed marine systems
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Mechanical Response of Conductor on Round Core(CORC)Cables Under Electromagnetic Force 认领 引用 被引量：3
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作者 Junfeng Wu Donghui Liu +1 位作者 Xingyi Zhang Huadong Yong 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2023年第3期418-427,共10页
The conductor on round core(CORC)cables are fabricated with multilayer high-temperature superconductor tapes,which are helically wound around a circular central former.The large Lorentz force will be generated by the ... The conductor on round core(CORC)cables are fabricated with multilayer high-temperature superconductor tapes,which are helically wound around a circular central former.The large Lorentz force will be generated by the transport current in CORC cables under high magnetic field,which will affect the stress and strain distributions of tapes in the cables and the performance of superconducting tape.This paper establishes a two-dimensional axisymmetric model to analyze the mechanical response of CORC cables subjected to the Lorentz force and analyzes the influence of air gaps on stress and strain distributions inside the cables.The T-A method is used to calculate the distributions of current density,magnetic field and the Lorentz force in CORC cables.The mechanical response of CORC cables is analyzed by applying the Lorentz force as an external load in the mechanical model.The direction of electromagnetic force is analyzed in CORC cables with and without shielding current,and the results show that the shielding current can lead to the concentration of electromagnetic force.The maximum stress and strain occur on both sides of the superconducting tapes in the cables with shielding current.Reducing the size of air gaps can reduce the stress and strain in the superconducting layers.The analysis of mechanical response of CORC cables can play an important role in optimizing the design of CORC cables and improving transmission performance. 展开更多
关键词 CORC cables Electromagnetic force Mechanical response Air gaps
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Cables在子宫内膜癌中的表达缺失及意义 认领 引用 被引量：2
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作者 郑学民 马艳培 王敏 《肿瘤学杂志》 CAS 2015年第1期48-50,共3页
[目的]探讨Cables在子宫内膜癌组织中的表达及意义。[方法]免疫组化法检测79例子宫内膜癌患者组织中Cables的表达,并进行生存分析。[结果]Cables在子宫内膜癌中表达缺失与患者年龄、TNM分期、肿瘤分化、淋巴转移无显著相关性,但与复发... [目的]探讨Cables在子宫内膜癌组织中的表达及意义。[方法]免疫组化法检测79例子宫内膜癌患者组织中Cables的表达,并进行生存分析。[结果]Cables在子宫内膜癌中表达缺失与患者年龄、TNM分期、肿瘤分化、淋巴转移无显著相关性,但与复发有显著相关性(r=0.231,P=0.042),COX比例风险回归分析显示Cables是子宫内膜癌预后的独立影响因素(P=0.024),相比Cables阳性表达患者,Cables表达缺失的患者复发率高,中位生存期明显缩短(22个月vs 45个月,P<0.01)。[结论]Cables参与了子宫内膜癌的发生发展过程,是子宫内膜癌患者独立的预后影响因素。 展开更多
关键词 子宫内膜癌 Cables 复发 预后
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Dynamic response of a slope reinforced by double-row antisliding piles and pre-stressed anchor cables 认领 引用 被引量：17
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作者 FAN Gang ZHANG Jian-jing +1 位作者 QI Shun-chao WU Jin-biao 《Journal of Mountain Science》 SCIE CSCD 2019年第1期226-241,共16页
Large-scale shaking table tests were conducted to study the dynamic response of a slope reinforced by double-row anti-sliding piles and prestressed anchor cables. The test results show that the reinforcement suppresse... Large-scale shaking table tests were conducted to study the dynamic response of a slope reinforced by double-row anti-sliding piles and prestressed anchor cables. The test results show that the reinforcement suppressed the acceleration amplification effectively. The axial force time histories are decomposed into a baseline part and a vibration part in this study. The baseline part of axial force well revealed the seismic slope stability, the peak vibration values of axial force of the anchor cables changed significantly in different area of the slope under seismic excitations. The peak lateral earth pressure acting on the back of the anti-sliding pile located at the slope toe was much larger than that acting on the back of the anti-sliding pile located at the slope waist. The test results indicate an obvious load sharing ratio difference between these two anti-slide piles, the load sharing ratio between the two anti-sliding piles located at the slope toe and the slope waist varied mainly in a range of 2-5. The anti-slide pile at the slope waist suppressed the horizontal displacement of the slope surface. 展开更多
关键词 Slope stability Anti-sliding pile Anchor cable Seismic design Shaking table test Earthquake
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Performance evaluation of two types of heated cables for distributedtemperature sensing-based measurement of soil moisture content 认领 引用 被引量：13
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作者 Dingfeng Cao Bin Shi +3 位作者 Honghu Zhu Kun Zhu Guangqing Wei Kai Gu 《Journal of Rock Mechanics and Geotechnical Engineering》 CSCD 2016年第2期212-217,共6页
Distributed temperature sensing(DTS)using heated cables has been recently developed for distributed monitoring of in-situ soil moisture content.In this method,the thermal and electrical properties of heated cables hav... Distributed temperature sensing(DTS)using heated cables has been recently developed for distributed monitoring of in-situ soil moisture content.In this method,the thermal and electrical properties of heated cables have a significant influence on the measurement accuracy of soil moisture content.In this paper,the performances of two heated cables,i.e.the carbon-fiber heated cable(CFHC)and the metalnet heated cable(MNHC),are studied in the laboratory.Their structures,uniformity in the axial direction,measurement accuracy and suitability are evaluated.The test results indicate that the MNHC has a better uniformity in the axial direction than CFHC.Both CFHC and MNHC have high measurement accuracy.The CFHC is more suitable for short-distance measurement(500 m),while the MNHC can be used for longdistance measurement(>500 m). 展开更多
关键词 Soil moisture content Carbon-fiber heated cable(CFHC) Metal-net heated cable(MNHC) Distributed measurement Optical fiber
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Instability mechanism of mining roadway passing through fault at different angles in kilometre-deep mine and control measures of roof cutting and NPR cables 认领 引用 被引量：9
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作者 SUN Xiaoming WANG Jian +6 位作者 ZHAO Wenchao MING Jiang ZHANG Yong LI Zhihu MIAO Chengyu GUO Zhibiao HE Manchao 《Journal of Mountain Science》 SCIE CSCD 2024年第1期236-251,共16页
The angle α between the fault strike and the axial direction of the roadway produces different damage characteristics. In this paper, the research methodology includes theoretical analyses, numerical simulations and ... The angle α between the fault strike and the axial direction of the roadway produces different damage characteristics. In this paper, the research methodology includes theoretical analyses, numerical simulations and field experiments in the context of the Daqiang coal mine located in Shenyang, China. The stability control countermeasure of "pre-splitting cutting roof + NPR anchor cable"(PSCR-NPR) is simultaneously proposed. According to the different deformation characteristics of the roadway, the faults are innovatively classified into three types, with α of type I being 0°-30°, α of type II being 30°-60°, and α of type III being 60°-90°. The full-cycle stress evolution paths during mining roadway traverses across different types of faults are investigated by numerical simulation. Different pinch angles α lead to high stress concentration areas at different locations in the surrounding rock. The non-uniform stress field formed in the shallow surrounding rock is an important reason for the instability of the roadway. The pre-cracked cut top shifted the high stress region to the deep rock mass and formed a low stress region in the shallow rock mass. The high prestressing NPR anchor cable transforms the non-uniform stress field of the shallow surrounding rock into a uniform stress field. PSCR-NPR is applied in the fault-through roadway of Daqiang mine. The low stress area of the surrounding rock was enlarged by 3-7 times, and the cumulative convergence was reduced by 45%-50%. It provides a reference for the stability control of the deep fault-through mining roadway. 展开更多
关键词 Kilometre-deep mine Fault Mining roadway Failure mechanism Pre-splitting cutting roof High pre-stress NPR anchor cable
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Steady State Analysis of Towed Marine Cables 认领 引用 被引量：16
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作者 王飞 黄国樑 邓德衡 《Journal of Shanghai Jiaotong university(Science)》 EI 2008年第2期239-244,共6页
Efficient numerical schemes were presented for the steady state solutions of towed marine cables. For most of towed systems,the steady state problem can be resolved into two-point boundary-value problem,or initial val... Efficient numerical schemes were presented for the steady state solutions of towed marine cables. For most of towed systems,the steady state problem can be resolved into two-point boundary-value problem,or initial value problem in some special cases where the initial values are available directly.A new technique was proposed and attempted to solve the two-point boundary-value problem rather than the conventional shooting method due to its algorithm complexity and low efficiency.First,the boundary conditions are transformed into a set of nonlinear governing equations about the initial values,then bisection method is employed to solve these nonlinear equations with the aid of 4th order Runge-Kutta method.In common sense,non-uniform (sheared) current is assumed,which varies in magnitude and direction with depth.The schemes are validated through the DE Zoysa's example,then several numerical examples are also presented to illustrate the numerical schemes. 展开更多
关键词 towed cable nested bisection method Runge-Kutta method non-uniform current numerical simulation
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