“三软”动压巷道复合变形支护理论与技术研究  

Support theory and technology study for composite deformation of three-soft roadway under dynamic pressure

作　　者：谭毅[1,2] 郭文兵[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]太原华润煤业有限公司,山西太原030200

出　　处：《煤炭工程》2016年第7期79-81,85,共4页Coal Engineering

摘　　要：针对丰汇煤矿"三软"动压巷道支护困难的问题,通过采场围岩运移的分析,指出了回采巷道高应力场产生的原因,现场巷道观测得到了其超前支承压力的影响范围。通过对巷道变形影响因素的分析,指出了此类巷道变形是多因素耦合作用机制下的变形。对此类巷道的多因素耦合作用机制进行分析,提出了相应的支护的对策:支护系统要有足够的支护强度、刚度以实现对软弱围岩变形的控制;当巷道处于采动引起的高应力作用下时,支护系统能够通过适当的变形释放变形能。基于上述支护对策提出了针对该巷道的支护方案。数值模拟表明,该支护方案能有效控制丰汇煤矿回采巷道的变形。Aiming at the support difficulty in the three-soft roadway under dynamic pressure of Fenghui mine,the cause of high stress field in mining roadway is obtained through analysis of surrounding rock movement in stope. The scope of advance abutment press is obtained with field observation. Influence factors analysis of roadway deformation shows deformation of roadway is caused by multifactor coupling effect. The support countermeasure is proposed,which offers adequate support intensity and rigidity for weak surrounding rock control,and properly releases the energy of deformation under high stress effect. A support scheme is putting forward based on the countermeasure. Numerical simulation shows that,the mining roadway deformation in Huifeng mine can be well controlled.

关 键 词：支护系统 动压巷道 超前支承压力 释放变形能 

分 类 号：TD322[矿业工程—矿井建设]