摘要
冲击地压是岩体中聚积的弹性变形势能在一定条件下突然猛烈释放,导致岩石爆裂并弹射出来的现象,是深井开采面临的主要安全隐患之一。在有明显冲击地压可能性的综放采场一般采用沿空留巷的巷道布置方式,但因冲击地压的存在,沿空留巷存在底板冲击危险性,为了研究沿空区段巷道底板冲击地压的影响因素及卸压方法,通过数值模拟的方法,分析不同防冲方案下的巷道应力变形状态,择优应用。实践表明在防冲巷道布置方案下,底鼓量均较小,有利于巷道的维护,为同类工程实践提供参考。
Rock burst is a sudden and violent release of accumulated elastic deformation potential energy in rock mass under certain conditions,which leads to rock burst and ejection.It is one of the main hidden safety hazards in deep mining.The roadway layout with gob-side entry retaining is generally adopted in fully mechanized caving face with obvious possibility of rock burst,but because of the existence of rock burst,there is a risk of floor impact in gob-side entry retaining.In order to study the influencing factors and pressure relief methods of floor rock burst in gob-side section,the stress and deformation state of roadway under different anti-scour schemes are analyzed by numerical simulation method,and the optimal application is selected.。Practice shows that under the layout scheme of anti-scouring roadway,the floor heave is small,which is beneficial to the maintenance of roadway and provides reference for similar engineering practice.
作者
张鹏
Zhang Peng(Dispatch and Command Center of Jincheng Coal Group)
出处
《现代矿业》
CAS
2019年第11期116-118,共3页
Modern Mining
关键词
综放采场
沿空巷道
应力监测
底板冲击地压
Fully mechanized top coal caving face
Gob side entry
Stress monitoring
Floor rock burst
