Stability monitoring of a rail slope using acoustic emission
Stability monitoring of a rail slope using acoustic emission
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DOI：
10.1680/geng.14.00152
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发表时间：
2015-10-01
影响因子：
2.2
通讯作者：
Haslam, Edward
中科院分区：
文献类型：
--
作者：
Dixon, Neil;Smith, Alister;Haslam, Edward
本文详细介绍了使用声发射所产生的有源波导地下仪器监测铁路土质路堑边坡破坏的稳定性。有源波导，单一电池供电的声发射传感器和报警通信系统的操作进行了说明。作者报告的以前的现场试验表明，有源波导产生的声发射率与斜坡运动的速度成正比，因此可以用来检测运动速率的变化，以响应不稳定和稳定的影响，如降雨和补救措施，分别。介绍了声发射监测系统在英国南安普顿的Players Crescent重新激活的铁路路堑边坡破坏现场试验。监测结果与定期和连续变形测量进行了比较。研究表明，声发射监测可以提供关于位移速率的连续信息，具有高时间分辨率。监测系统的能力，以检测斜坡移动和发送短信的方式发出警告。所示的监测方法，提供实时信息，可用于运营商作出交通安全的决定。
The paper details the use of acoustic emission generated by active waveguide subsurface instrumentation to monitor the stability of a rail soil cutting slope failure. Operation of the active waveguide, unitary battery-operated acoustic emission sensor and warning communication system are described. Previous field trials reported by the authors demonstrate that acoustic emission rates generated by active waveguides are proportional to the velocity of slope movement, and can therefore be used to detect changes in rates of movement in response to destabilising and stabilising effects, such as rainfall and remediation, respectively. The paper presents a field trial of the acoustic emission monitoring system at a reactivated rail-cutting slope failure at Players Crescent, Totton, Southampton, UK. The results of the monitoring are compared with both periodic and continuous deformation measurements. The study demonstrated that acoustic emission monitoring can provide continuous information on displacement rates, with high temporal resolution. The ability of the monitoring system to detect slope movements and disseminate warnings by way of text messages is presented. The monitoring approach is shown to provide real-time information that could be used by operators to make decisions on traffic safety.