开采孤岛煤柱的冲击危险性区预测  

Prediction of rock burst zones during isolated coal-pillar mining

作　　者：陈善乐[1,2] 汪华君 张继华[3] 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]贵州工程应用技术学院,贵州毕节551700 [3]中国矿业大学力学与建筑工程学院,江苏徐州221116

出　　处：《中国地质灾害与防治学报》2015年第1期49-55,共7页The Chinese Journal of Geological Hazard and Control

基　　金：贵州省基金计划项目(LKB[2012]03)

摘　　要：为了确保"孤岛"煤柱资源回采过程中的安全生产,预测其冲击危险性,通过Flac3D实现对矿井4、6煤层采空区和煤柱支承应力分布与塑性变形区域分布模拟,详细分析了两煤层中的7个应力集中点在走向、倾向上的应力分布和塑性变形区域分布,并按照分析结果,在4煤层划分了5个高危冲击危险区,在6煤层划分了2个高危冲击危险区。该研究为制定防冲、防突等措施提供参数数据,对于指导现场生产具有重要的应用价值。In order to ensure production safe in mining the ＂isolated island＂coal-pillar resources,predict the shock risk propensity,Carried out the simulation of bearing stress and plastic deformed region distribution of goaf and coal-pillar in the 4thand 6thcoal seam,by Flac3 D. Seven points had been analyzed the stress and plastic deformed region distribution on strike and trend,which belong to the 4thand 6thcoal seam. and according to the results,there is 5 high risk impact region has been divided in the 4thcoal seam,and 2 high risk impact region in the 6thcoal seam. This research provide the parameters to outburst and impingement prevention measures,and it has important application value to guide field production.

关 键 词：孤岛煤柱 应力分布 冲击倾向性 

分 类 号：TD323[矿业工程—矿井建设]