上覆煤层开采对下方巷道的稳定性影响分析  

On the impact of overlying coal mining on the stability of the under roadway

作　　者：薛学贵[1] 姜清[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽省淮南市232001

出　　处：《中国煤炭》2012年第7期42-45,共4页China Coal

摘　　要：分析了上覆煤层工作面开采过程中产生的支承压力对下方轨道大巷产生的影响。通过理论计算工作面底板最大破坏深度为18.57m。结合工程地质条件,运用大型数值模拟软件ABAQUS建立三维计算模型对开采过程进行模拟,发现工作面开采会使轨道大巷周边围岩应力提高很多,尤其是顶板范围内的应力水平上升约6MPa。The paper analyzes the impact of the abutment pressure generated in the process of overlying coal seam mining on the under roadway. With theoretical calculation, it works out the depth of the greatest damage on floor is 18.57m. Based on the mining geological conditions of this mine, using numerical simulation software ABAQUS to build 3-D calculating model to simu- late the mining process, the paper gets the result that overlying coal mining will make the surrounding rock stress of the under roadway rise a lot,and the stress within the scope of the roadway roof will especially increase 6MPa.

关 键 词：上覆煤层 煤层开采 下方巷道 巷道围岩应力 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]