复杂地质条件下回采巷道分区动态加固支护技术研究  

Study on Subarea Dynamic Support Technology of Mining Roadway Under Complicated Geological Conditions

作　　者：熊礼军[1] 程学华[1] 査文华 

机构地区：[1]安徽三联学院,安徽合肥230601 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《煤炭工程》2015年第1期40-43,共4页Coal Engineering

基　　金：国家自然科学基金(51004002)

摘　　要：针对淮北青东矿7261工作面回采巷道的复杂地质条件,通过实测获得了回采巷道的矿压显现规律,并且利用FLAC3D数值模拟软件分析了回采巷道应力分布特征,综合矿压显现规律和回采巷道的数值模拟应力分布特征,得出了巷道受工作面回采超前支承压力影响范围和侧向支承压力影响范围,根据其影响范围和巷道围岩的情况,制定回采巷道在开采期间的超前分区加固措施,确保巷道在回采期间的稳定性。结果表明:回采巷道的矿压显现规律、工作面超前支承压力分布和巷道两侧支承压力分布指导了回采巷道围岩分区动态加固支护技术,保证了7261工作面的回采巷道在开采期间的安全稳定。Aiming at the complicated geological conditions of the mining roadway in Huaibei Qingdong coal mine No.7261 working face,the law of mine pressure behaviors of mining roadway was investigated through field measurement,and the stress distribution characteristics of the mining roadway was analyzed with FLAC3 Dnumerical simulation.Combining with the measurement and simulation results,the influence range of abutment pressure and lateral abutment pressure on mining face was obtained.The advance reinforcement measures during mining were determined according to the influence range and condition of roadway surrounding rock,ensuring the roadway stability during mining.The results show that,the subarea and dynamic reinforcement support of the surrounding rock of mining roadway is guided by the strata behavior law of the mining roadway,the advance abutment pressure distribution of working face and the abutment pressure distribution at the roadway sides,and ensuring the security and stability of roadway during the mining of 7261 working face.

关 键 词：多断层和褶曲 矿压显现规律 数值模拟 分区 动态加固支护 

分 类 号：TD353[矿业工程—矿井建设]