卸压爆破与巷道围岩控制的相互关系  

Relationship Between Pressure Release Blasting and Surrounding Rock Control of Roadway

作　　者：吴宝杨 欧阳振华 赵善坤 季成 

机构地区：[1]煤炭科学技术研究院有限公司矿山安全技术研究分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013

出　　处：《煤矿安全》2014年第12期201-203,共3页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51174272);中国煤炭科工集团有限公司科技创新基金资助项目(2013ZD002-04;2013MS015);煤炭科学研究总院技术创新基金资助项目(2012CX04)

摘　　要：以新疆某煤矿为工程背景,利用FLAC3D数值分析软件,研究了卸压爆破与巷道围岩控制的相互关系。研究发现,深孔卸压爆破虽然可以改善工作面前方的应力集中程度,降低采掘空间发生动力灾害事故的概率,但在一定程度上也破坏了巷道围岩的完整性和强度,使得巷道围岩的变形量较卸压爆破之前更大,给回采巷道的安全高效使用带来了较大困难,而加长巷道帮部的锚杆长度可以有效的降低卸压爆破给巷道控制带来的不利影响。Taking a coal mine in Xinjiang as engineering background, using FLAC3D numerical analysis software, we study the relationship between pressure release blasting and surrounding rock control of roadway. According to the results, the pressure release blasting can improve stress concentration degree, and decrease the probability of dynamic disaster in mining space, but, the integrity and intensity of roadway surrounding rock is damaged to some extent, so, the deformation of roadway surrounding rock is bigger than without pressure release blasting, the using of mining roadway is seriously affected, then lengthening the bolt length can effectively decrease the unfavorable influence on roadway control caused by pressure release blasting

关 键 词：卸压爆破 巷道控制 锚杆 动力灾害 应力集中 

分 类 号：TD322.5[矿业工程—矿井建设]