基于“三带”理论的沉陷区边坡失稳过程分析  

Analysis of the Instability Process for Slopes in Subsidence Area based on the Three-zone Theory

作　　者：张燕[1] 纪洪广[1] 王金安[1] 

机构地区：[1]北京科技大学土木与环境工程学院

出　　处：《金属矿山》2012年第3期42-44,共3页Metal Mine

基　　金：国家重点基础研究发展计划(973计划)项目(编号:2010CB226803)

摘　　要：地下开采扰动给沉陷区内边坡稳定性带来不利影响。以抚顺老虎台矿开采沉陷区内某边坡失稳破坏为例,分析沉陷区内边坡失稳的动态演化过程。根据开采沉陷学"三带"理论,将处于开采沉陷区的东露天边坡岩土体划分为冒落带、裂隙带、弯曲下沉带和原生带4个特征区域,并分别计算出边坡处于3种"临界状态"时对应的地下开采深度。Underground coal mining can adversely affect the stability of slopes in subsidence area. In this study, taking the instability failure of a slope in the subsidence area of Laohutai Mine in Fushun, Liaoning province as the example, the dynamic evolutionary process of instability of slopes in subsidence area is analyzed; Based on the three-zone theory, the rock masses in the east open pit slope located at the mining induced subsidence area are divided into four characteristic zones as caving zone, fractured zone, curve subsidence zone, and primary zone. Additionally, the coal mining depths corresponding to the three kinds of critical statuses are respectively calculated.

关 键 词：沉陷区 边坡失稳 “三带”理论 临界状态 

分 类 号：TD88[矿业工程—矿山开采]