研究论文

基于RFPA-SRM的顺倾软岩边坡断层影响机理

  • 陈鹏 ,
  • 周志伟 ,
  • 曹兰柱
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  • 辽宁工程技术大学矿业学院, 辽宁阜新 123000
陈鹏,教授,研究方向为露天采矿优化设计与边坡稳定,电子信箱:chenpengmiao@163.com

收稿日期: 2013-08-05

  修回日期: 2013-11-22

  网络出版日期: 2014-01-15

基金资助

国家自然科学基金项目(51104084,51004103);辽宁省教育厅重点实验室科研项目(LS2010075)

Fault Influence in Slope of Down Dip Soft Rock Based on RFPA-SRM

  • CHEN Peng ,
  • ZHOU Zhiwei ,
  • CAO Lanzhu
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  • College of Mine, Liaoning Technical University, Fuxin 123000, Liaoning Province, China

Received date: 2013-08-05

  Revised date: 2013-11-22

  Online published: 2014-01-15

摘要

结合元宝山露天矿工程实例,基于细观力学方法和强度折减理论,应用RFPA-SRM对比模拟了有无断层作用下,顺倾软岩边坡失稳的动态过程,分析了边坡的稳定性,研究了断层对边坡失稳的影响机理。由结果分析得出:考虑断层时,Fs=1.099>1,边坡稳定,不考虑断层时,Fs=1.176,稳定系数增加0.077;边坡失稳破坏是一个渐进的过程,经历了裂隙的发生、扩展和贯通阶段,后形成滑动面,发生滑坡,同时存在拉张和剪切两种破坏方式;断层存在导致的应力状态改变和自身的强度特性是使滑坡模式和稳定性发生变化的根本原因。

本文引用格式

陈鹏 , 周志伟 , 曹兰柱 . 基于RFPA-SRM的顺倾软岩边坡断层影响机理[J]. 科技导报, 2013 , 31(36) : 31 -35 . DOI: 10.3981/j.issn.1000-7857.2013.36.004

Abstract

According to the actual data of Yanbaoshan open-pit and based on the mesoscopic mechanics method and the strength reduction method, the dynamic instability processes of the down dip soft rock with and without fault are simulated by the RFPA-SRM, then the stability of the slope, the affected form and the failure mechanism of the fault are studied. It is indicated that with fault, Fs=1.099, without fault, Fs=1.176, the slope is stable; the landslide or the failure of the slope is a gradual process of crack generation, extension, cut-through stages and the tensile failure and the shear failure co-exist; the root cause is that the fault causes the change of the failure mode and the stability of the slope through the rock stress condition influenced by the fault and the strength characteristics.

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