煤柱集中载荷特征及其对巷道围岩应力的影响  

Characteristics of Coal Pillar's Concentrated Load and Its Influence on Surrounding Rock Stress of Roadway

作　　者：张绪言[1] 张百胜[1] 康立勋[1] 李宏星 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]山西兴新安全生产技术服务中心,山西太原030024

出　　处：《矿业安全与环保》2009年第5期6-8,共3页Mining Safety & Environmental Protection

基　　金：国家自然科学基金资助项目(507024);山西省青年科技研究基金资助项目(2007021024)

摘　　要：煤层群开采时经常会出现下层巷道与上层煤柱交叉、重合现象,由于煤柱对载荷的向下传递作用,将对下层巷道围岩的应力分布造成影响。首先根据弹性理论分析了煤柱集中载荷在底板中的分布规律,然后应用数值模拟方法分析对比了普通巷道与煤柱下巷道围岩的应力状态,分析了煤柱集中载荷下巷道围岩的应力特点。The cross and superposition of the roadway in the lower layer with the coal pillar in the upper layer are often taken place.Since the pillar can transmit the load downward,it inevitably caused the effect on the stress distribution of the roadway surrounding rock in the lower layer.This paper firstly analyzed and built the distribution regularity of coal pillar's concentrated load in the floor according to the elasticity theory,then it analyzed and contrasted the stress state of surrounding rock around common roadway and the roadway under coal pillar with numerical simulation,and finally it analyzed the stress characteristics of roadway surrounding rock under the concentrated load of coal pillar.

关 键 词：集中载荷 应力分布规律 围岩应力 巷道 

分 类 号：TD322[矿业工程—矿井建设]