复杂地质条件大直径煤仓围岩稳定性分析  

Analysis on Stability of Surrounding Rock along Large DiameterCoal Bunker under Complicated Geological Condition

作　　者：莫积冲 庞建勇[2] 张峰[1] 姚韦靖 陈宇 MO Jichong;PANG Jianyong;ZHANG Feng;YAO Weijing;CHEN Yu(Huaibei Industrial Architectural Design Institute Limited Company,Huaibei 235000,China;School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]淮北工业建筑设计院有限责任公司,安徽淮北235000 [2]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《建井技术》2020年第4期18-24,共7页Mine Construction Technology

基　　金：安徽省高校自然科学重大项目(KJ2015ZD20);淮南市科技计划重大创新平台及创新人才团队专项(2017A055);安徽理工大学研究生创新基金项目(2019CX2028)。

摘　　要：为探究复杂地质条件大直径煤仓不同工况下的围岩稳定性,依据袁店一井矿东翼2号煤仓工程及现场地质情况,采用FLAC^3D软件,分析煤仓开挖不支护、煤仓开挖后支护、煤仓满载3种工况下的围岩应力、应变及煤仓典型位置的位移变化。结果表明:①煤仓中部和下部收口处,应力集中现象明显,煤仓支护和满载对应力集中现象可起到改善作用。②不支护时,煤仓上部锁口处和下部分煤器处位移变形较大;采取合理支护措施后,位移量分别减少约75%和约79%。③距煤仓壁横向距离越远,位移量经历快速减小后,趋于平缓。In order to discover the surrounding rock stability of the large diameter coal bunker under different working performances and the complicated geological condition,according to the east wing No.2 coal bunker project and the site geological condition in Yuandian First Mine,the FLAC^3D software was applied to analyze the surrounding rock stress,strain and the typical location displacement variation of the coal bunker under the three working performances of the coal bunker excavation with no support,coal bunker excavation with a late support and coal bunker with a full load.The results showed that①at the middle part of the coal bunker and the draw-in place at the end place of the bottom part,the stress concentration phenomenon was obvious and the coal bunker support and full load could have the improvement effect to the stress concentration phenomenon.②When the coal bunker with no support,the top block place of the coal bunker and the coal delivery place of the coal bunker bottom would have large displacement and deformation.After the rational support measures conducted,the displacement would be reduced by about 75%and about 79%.③When the lateral distance was far to the coal bunker wall,after the displacement would be rapidly reduced and then could be stable.

关 键 词：复杂地质条件 大直径煤仓 FLAC^3D 围岩稳定性 

分 类 号：TD264+.4[矿业工程—矿井建设]