基于固有振動頻率的滑坡安全評價新方法

杜巖; 謝謨文; 蔣宇靜; 李博; 劉秋強

doi:10.13374/j.issn2095-9389.2015.09.002

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基于固有振動頻率的滑坡安全評價新方法

doi: 10.13374/j.issn2095-9389.2015.09.002

杜巖¹,
謝謨文^1, ,,
蔣宇靜²,
李博³,
劉秋強⁴

1. 北京科技大學土木與環境工程學院, 北京 100083;
2. 山東科技大學礦山災害預防控制省部共建國家重點實驗室培育基地, 青島 266590;
3. 長崎大學工學部, 長崎 852-8521, 日本;
4. 中國地質環境監測院, 北京 100081

基金項目:

北京科技大學“創新人才培養”資助項目(USTB201309FX)

詳細信息

通訊作者:
謝謨文,E-mail:mowenxie@ustb.edu.cn

中圖分類號: P642.22
計量
- 文章訪問數: 399
- HTML全文瀏覽量: 156
- PDF下載量: 15
- 被引次數: 0
出版歷程
- 收稿日期: 2014-07-23
- 網絡出版日期: 2021-07-10

A new method for landslide safety assessments based on natural vibration frequency

1. School of Civil and Environmental Engineering,University of Science and Technology Beijing, Beijing 100083, China;
2. State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China;
3. Faculty of Engineering, Nagasaki University, Nagasaki 852-8521, Japan;
4. China Institute of Geo-environment Monitoring, Beijing 100081, China

摘要

摘要: 運用模型實驗,在保持下滑力不變的情況下,通過固有振動頻率對滑坡內部的黏結力、摩擦力等抗滑力指標進行分析.通過在弱穩定階段中實際靜摩擦力是否達到最大靜摩擦力的方法,科學地判識滑體的穩定情況.結果表明:計算的摩擦力可以有效分析滑坡在弱穩定階段期間的安全性,并證明固有振動頻率監測比位移監測更加敏感.同時,固有振動頻率的監測可對滑坡損傷做出定量判斷,并可以評估滑坡靜摩擦力指標,從而實現擾動后滑坡的安全評價.
- 固有振動頻率 /
- 安全評價 /
- 滑坡 /
- 損傷
Abstract: Using model experiment, in the condition that the sliding force unchanged, the internal cohesive force and friction force of the slope were analyzed by the natural vibration frequency. The stabilization of landslides was decided by comparing the friction force with the maximum static friction force in the weak stable phase. Experimental results show that the friction force can effectively analyze the safety of landslides in the weak stable phase and that the natural vibration frequency is more sensitive than the displacement. By monitoring the natural vibration frequency, a quantitative assessment about the damage of landslides can be made, which provide the static friction force index, and the safety assessment of landslides after disturbances is achieved.
- natural vibration frequency /
- safety assessments /
- landslide /
- damage