降雨诱发土坡失稳过程中弹性波波速演化规律的模型试验研究

doi:10.13722/j.cnki.jrme.2018.1104

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摘要为减少滑坡灾害造成的人员伤亡和经济损失，滑坡早期预警系统成为了最佳选择之一。提出一种利用弹性波波速预测滑坡的新方法。为了验证其有效性，进行小尺寸固定和活动边坡模型试验以及大尺寸边坡模型试验。试验结果表明，弹性波波速随着含水率和变形的增大而减小，临近滑坡时呈现加速减小，提出在弹性波波速加速减小时发出滑坡预警。系统设计了弹性波波速监测系统在实际应用中的工作流程，总结了实际应用面临的困难。

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	陈宇龙1
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	内村太郎2

关键词 ：边坡工程, 滑坡, 早期预警, 降雨, 弹性波波速

Abstract：An early warning system of slope instability is one of optimal choices to decrease casualties and economic losses resulted from landslide disasters. A new technique for forecasting landslides by means of elastic wave propagation in soil was developed. To verify its applicability，a series of small scale fixed and varied slope model tests，as well as a large scale model test，were conducted. The test results show that the elastic wave velocity continuously decreases with increasing the moisture content or the deformation of the slope soil and sharply drops near slope failure，and that the soil deformation has more significant effect on the elastic wave velocity than the water content. It was proposed that a warning should be issued once the wave velocity decreases drastically. Based on these observations，a workflow of the elastic wave velocity monitoring system for landslide prediction in the field application was presented，and the problems for applying the monitoring system in practice were also analyzed.

Key words： slope engineering landslides early warning rainfall elastic wave velocity

引用本文:

陈宇龙1，2，内村太郎2. 降雨诱发土坡失稳过程中弹性波波速演化规律的模型试验研究[J]. 岩石力学与工程学报, 2019, 38(10): 2138-2150.
CHEN Yulong1，2，UCHIMURA Taro2. Model tests of evaluation behaviors of the elastic wave velocity during the failure process of soil slopes due to rainfall. , 2019, 38(10): 2138-2150.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2018.1104 或 http://www.rockmech.org/CN/Y2019/V38/I10/2138

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