A new rock mass wave velocity monitoring method of slopes based on multiple scattering waves and its field application

被引：0
|
作者：
Xie F. [1 ]
Xia K. [2 ,3 ]
Huang H. [4 ]
Dai S. [5 ]
Wang B. [6 ]
Wei W. [7 ,8 ]
机构：
[1] Institute of Geophysics, China Earthquake Administration, Beijing
[2] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin
[3] School of Civil Engineering, Tianjin University, Tianjin
[4] Guodian Dadu River Hydropower Co., Ltd., Chengdu
[5] Sichuan Earthquake Administration, Chengdu
[6] School of Earth and Space Science, University of Science and Technology of China, Hefei
[7] Geotechnical and Structural Engineering Safety in Hubei Province, Wuhan University, Wuhan
[8] School of Civil Engineering, Wuhan University, Wuhan
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2020年 / 39卷 / 11期
基金：
天津市自然科学基金; 国家重点研发计划;
关键词：
Ambient noise; Diffusing wave; Landslide prediction; Rock mass wave velocity; Rock slopes; Slope engineering;
D O I：
10.13722/j.cnki.jrme.2020.0426
中图分类号：
学科分类号：
摘要：
Based on the recent advance of ambient noise in seismology and diffusing wave in acoustics, a novel method for monitoring the wave velocity change of rock mass inside slopes using diffusing wave induced by ambient noise is proposed, by which the ground surface vibration caused by ambient noise is monitored using seismometers. The real time wave velocity change of the underground rock mass can be obtained through the correlation of the diffusing wave. This method was applied to monitor the rock slope at the right band of the reservoir of the Pubugou Power Station in Sichuan Province. The results show that the rock mass wave velocity varies with the season and is affected by the nearby earthquake and precipitation. Specifically, the rock mass wave velocity increases with the temperature, decreases temporarily due to the earthquake and decreases continuously with the precipitation. Around 7 days prior to a local small landslide, abnormal wave velocity decrease was observed, and the velocity stayed at a minimum value till the catastrophic failure. © 2020, Science Press. All right reserved.
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页码：2274 / 2282
页数：8
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