摘要
为了研究急倾斜煤层充填开采时围岩变形规律,采用数值模拟和理论分析的方法对急倾斜煤层充填开采时不同充采体积比情况下的充填巷道及工作面围岩变形及应力进行了研究。研究表明:随着充采体积比的增大,充填巷道围岩变形没有明显变化,而应力集中现象有了明显的减小;工作面顶底板所受的应力没有明显变化,反而对顶底板的变形有了较为有效的控制;最后给出了实际生产中所注意的一些问题。
The method of numerical simulation and theoretical analysis is used to research the deformation and stress of filling roadway and working face surrounding rock to analyze laws of deformation of surrounding rock in steep coal seam backfill mining. The results show that it does not have obvious change in deformation but has obvious reduction on stress of filling roadway surrounding rock with the increase of filling mining ratio; it does not have obvious change in stress but has more effective control on the deformation of roof and floor; some problems which should be paid attention in the actual production are proposed.
出处
《煤矿安全》
CAS
北大核心
2015年第7期48-50,54,共4页
Safety in Coal Mines
关键词
急倾斜煤层
充填开采
数值模拟
理论分析
围岩变形
steeply inclined coal seam
backfill mining
numerical simulation
theoretical analysis
surrounding rock deformation
