断层下盘留煤柱开采数值模拟  

Numerical Simulation for Coal Pillar Mining in Fault Footwall

作　　者：赵华安[1] 赵光明[1] 孟祥瑞[1] 

机构地区：[1]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《煤矿安全》2015年第3期37-40,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51374013;51174005;51134012);安徽省学术和技术带头人科研活动资助项目(DG073);高等学校博士学科点专项科研基金资助项目(20133415110006;20123415130001)

摘　　要：为研究工作面开采和断层之间的相互影响,利用FLAC3D软件模拟煤层开挖对断层的影响,模拟有断层和无断层存在2种情况下采场矿压分布规律。研究表明:对于煤柱支承压力,在断层附近急剧减小然后逐渐增大,远离断层时,支承压力恢复正常分布规律。断层的存在加剧顶板下沉。利用应力判别法,确定导水裂隙带高度,从而确定合理的断层煤柱留设尺寸。In order to research the interaction effect between the working face and faults,we use FLAC3 Dsoftware to simulate the effect of seam excavation on fault and the distribution laws of rock pressure under faults and without faults. Research show that abutment pressure around faults sharply reduced then gradually increased; and it returned to normal distribution away from the fault. The existence of faults intensified roof convergence. Stress criterion is used to determine the height of water flowing fractured zone to determine the reasonable size of fault coal pillar.

关 键 词：断层下盘 煤柱 导水裂隙带 支承压力 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]