深井动压综放巷道围岩稳定性及控制技术  

Surrounding Rock Stability and Control of Deep Drift in Dynamic Pressure

作　　者：周枫钧[1,2] 曲艳伟[3] 周枫力 

机构地区：[1]河南工程学院安全工程学院,郑州451191 [2]武汉理工大学资源与环境工程学院,武汉430070 [3]河南工程学院资源与环境学院,郑州451191 [4]河南天冠企业集团有限公司,河南南阳473000

出　　处：《煤炭技术》2017年第2期17-20,共4页Coal Technology

摘　　要：为探究受多次动压影响深井综放巷道围岩失稳特征及支护技术,以同煤集团麻家梁煤矿为工程背景,利用围岩地质力学参数测试、实测井下多次采动应力场及确定合理煤柱尺寸等方法展开研究。研究结果表明:一次动压影响阶段,超前支撑压力对煤柱的影响范围及影响程度远远小于工作面推过后采动应力对煤柱的影响;二次动压影响阶段,煤柱应力核区位于深度8~18 m钻孔之间,合理煤柱尺寸应至少为55 m,方能保证矿井安全生产。On the background of Majialiang coal mine in Datong coal mine group, with the methods of surrounding rock geomechanics test, measurements of mining-induced stress field and determination of reasonable coal pillar size to study surrounding rock deformation and failure law of deep fully-mechanized caving face roadway influenced by multiple kinetic pressure and support technology. The research results showed that during the period of first kinetic pressure, influence range and degree on coal pillar of advanced support pressure were far less than mining-induced stress after workface stoping ahead; during the period of second kinetic pressure, the coal pillar stress core was located in 8-18 m depths boreholes, reasonable coal pillar size should no less than 55 m,well meet the need of safety in production.

关 键 词：多次动压 综放巷道 支护技术 

分 类 号：TD32[矿业工程—矿井建设]