Purpose–This study aims to analyze the development direction of track geometry inspection equipment for high-speed comprehensive inspection train in China.Design/methodology/approach–The development of track geometr...Purpose–This study aims to analyze the development direction of track geometry inspection equipment for high-speed comprehensive inspection train in China.Design/methodology/approach–The development of track geometry inspection equipment for highspeed comprehensive inspection train in China in the past 20 years can be divided into 3 stages.Track geometry inspection equipment 1.0 is the stage of analog signal.At the stage 1.0,the first priority is to meet the China’s railways basic needs of pre-operation joint debugging,safety assessment and daily dynamic inspection,maintenance and repair after operation.Track geometry inspection equipment 2.0 is the stage of digital signal.At the stage 2.0,it is important to improve stability and reliability of track geometry inspection equipment by upgrading the hardware sensors and improving software architecture.Track geometry inspection equipment 3.0 is the stage of lightweight.At the stage 3.0,miniaturization,low power consumption,self-running and green economy are co-developing on demand.Findings–The ability of track geometry inspection equipment for high-speed comprehensive inspection train will be expanded.The dynamic inspection of track stiffness changes will be studied under loaded and unloaded conditions in response to the track local settlement,track plate detachment and cushion plate failure.The dynamic measurement method of rail surface slope and vertical curve radius will be proposed,to reveal the changes in railway profile parameters of high-speed railways and the relationship between railway profile,track irregularity and subsidence of subgrade and bridges.The 200 m cut-off wavelength of track regularity will be researched to adapt to the operating speed of 400 km/h.Originality/value–The research can provide new connotations and requirements of track geometry inspection equipment for high-speed comprehensive inspection train in the new railway stage.展开更多
With the increase in the number and scale of tunnel projects in China in recent years,the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more...With the increase in the number and scale of tunnel projects in China in recent years,the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more and more attention.Based on this,this paper analyzes the comprehensive management of quality inspection and monitoring during tunnel construction to ensure the quality of tunnel construction.展开更多
近年来,节点地震采集技术发展迅速,在油气勘探中得到大规模推广应用。相对于有缆地震仪器,节点地震仪在带道能力、排列布设以及施工效率等方面具有显著的优势,但它无法实时获取采集的地震数据,给质量监控和数据评价带来一定困难。如何...近年来,节点地震采集技术发展迅速,在油气勘探中得到大规模推广应用。相对于有缆地震仪器,节点地震仪在带道能力、排列布设以及施工效率等方面具有显著的优势,但它无法实时获取采集的地震数据,给质量监控和数据评价带来一定困难。如何确保节点地震采集质量,保证节点地震仪工作状态良好成为采集施工中的重要环节,即保证设备的稳定性与安全性。结合野外地震采集施工模式和作业流程,介绍了多类型节点质控手机APP及质控数据综合分析平台设计思路,开展了节点通讯、手机定位及导航、节点位置监控、多模式巡检、数据可视化及统计分析等关键技术研究,并基于Visual Studio 2022集成开发环境,采用MVC设计模式研发了多类型节点质控手机APP及质控数据综合分析平台,解决了当前节点质控软件通用性不强,质控数据综合评价分析自动化程度低等问题。在实际生产应用中,软件性能稳定、运行流畅,大幅提高了节点地震仪质控效率及效果,可有效保障节点数据采集质量和资料品质,降低施工成本。展开更多
基金supported by the National Natural Science Foundation of China(Grant No.52278465)Science and Technology Research and Development Plan of China Railway(Grant No.N2022G051)Key Project of China Academy of Railway Sciences(Grant No.2351JJ2401).
文摘Purpose–This study aims to analyze the development direction of track geometry inspection equipment for high-speed comprehensive inspection train in China.Design/methodology/approach–The development of track geometry inspection equipment for highspeed comprehensive inspection train in China in the past 20 years can be divided into 3 stages.Track geometry inspection equipment 1.0 is the stage of analog signal.At the stage 1.0,the first priority is to meet the China’s railways basic needs of pre-operation joint debugging,safety assessment and daily dynamic inspection,maintenance and repair after operation.Track geometry inspection equipment 2.0 is the stage of digital signal.At the stage 2.0,it is important to improve stability and reliability of track geometry inspection equipment by upgrading the hardware sensors and improving software architecture.Track geometry inspection equipment 3.0 is the stage of lightweight.At the stage 3.0,miniaturization,low power consumption,self-running and green economy are co-developing on demand.Findings–The ability of track geometry inspection equipment for high-speed comprehensive inspection train will be expanded.The dynamic inspection of track stiffness changes will be studied under loaded and unloaded conditions in response to the track local settlement,track plate detachment and cushion plate failure.The dynamic measurement method of rail surface slope and vertical curve radius will be proposed,to reveal the changes in railway profile parameters of high-speed railways and the relationship between railway profile,track irregularity and subsidence of subgrade and bridges.The 200 m cut-off wavelength of track regularity will be researched to adapt to the operating speed of 400 km/h.Originality/value–The research can provide new connotations and requirements of track geometry inspection equipment for high-speed comprehensive inspection train in the new railway stage.
文摘With the increase in the number and scale of tunnel projects in China in recent years,the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more and more attention.Based on this,this paper analyzes the comprehensive management of quality inspection and monitoring during tunnel construction to ensure the quality of tunnel construction.
文摘近年来,节点地震采集技术发展迅速,在油气勘探中得到大规模推广应用。相对于有缆地震仪器,节点地震仪在带道能力、排列布设以及施工效率等方面具有显著的优势,但它无法实时获取采集的地震数据,给质量监控和数据评价带来一定困难。如何确保节点地震采集质量,保证节点地震仪工作状态良好成为采集施工中的重要环节,即保证设备的稳定性与安全性。结合野外地震采集施工模式和作业流程,介绍了多类型节点质控手机APP及质控数据综合分析平台设计思路,开展了节点通讯、手机定位及导航、节点位置监控、多模式巡检、数据可视化及统计分析等关键技术研究,并基于Visual Studio 2022集成开发环境,采用MVC设计模式研发了多类型节点质控手机APP及质控数据综合分析平台,解决了当前节点质控软件通用性不强,质控数据综合评价分析自动化程度低等问题。在实际生产应用中,软件性能稳定、运行流畅,大幅提高了节点地震仪质控效率及效果,可有效保障节点数据采集质量和资料品质,降低施工成本。