急斜煤层大段高开采三角煤可控性研究  

Study on control mining in steep inclined delta seam with high cutting height

作　　者：邵小平[1] 石平五[1] 

机构地区：[1]西安科技大学能源学院教育部西部矿山开采及灾害治理重点实验室,陕西西安710054

出　　处：《煤炭工程》2008年第11期61-63,共3页Coal Engineering

摘　　要：通过相似模拟试验,对大段高开采条件下顶煤体靠底板侧煤体弱化程度不同情况下的工作面采出率进行了模拟研究。研究表明:顶煤以拱的形式破坏,其破坏过程是旧的拱式平衡体系不断被新的拱式平衡体系取代,并不断向上位顶煤上移的过程;加强对底板侧煤体的弱化处理,使顶煤冒落拱形态由全拱形向半拱形扩展,将有助于减少底板侧三角煤损失。With the similar simulation test, a simulation study on the mining rate of a coal mining with the top coal weaken in different degree and under the high cutting mining condition was conducted. The study showed that the top coal was failed in arch and the failure procedure was the old arch balance system replaced by the new arch balance system continued from top coal upward top coal. The weaken treatment for the coal at floor could make the top coal falling arch changed from full arch to half arch development, which could be favorable to reduce the coal loss coal at the floor of the delta area.

关 键 词：大段高开采 采出率 拱式平衡体系 三角煤损 

分 类 号：TD823.89[矿业工程—煤矿开采]