突出危险煤层石门揭煤岩柱厚度确定  

Determination of Pillar Thickness While Exposing Out-burst -prone Coal Seams in a Crosscut

作　　者：魏国营[1] 

机构地区：[1]焦作煤业集团有限公司,河南焦作454002

出　　处：《矿业安全与环保》2001年第4期10-11,共2页Mining Safety & Environmental Protection

摘　　要：通过有限元数值模拟,从岩石的物理力学性能、爆破对岩石的损伤和破坏作用、地应力和瓦斯压力的影响等几方面综合进行研究,以此确定出安全的最小预留岩柱厚度,并进行了工程实践,研究结果对防止石门揭煤造成的突出,具有指导意义。To expose outburst -prone coal seams in a crosscut may lead to coal and gas outburst with great intensity,which may affe ct a large area,so it is nec-essary to reserve coal pillars with r ational thickness so as to take effective preventive measures against outburst while exposing outburst -prone coal seams in a crosscut.In this paper,the au-thor puts forward the safest and mini mum pillar thickness through comprehensive study and analysis of finite element numerical simulation,the physico -mechanical properties of rock,the damage and failure of blasting to rock and the influence of ground stress and gas pressure.This research result has been applied in engineering and has guiding sense fo r outburst prevention while exposing outburst -prone coal seams in a crosscut.

关 键 词：瓦斯突出 石门揭煤 预留岩柱 爆破损伤 煤突出 岩柱厚度 

分 类 号：TD713[矿业工程—矿井通风与安全]