深部动压影响巷道变形规律及支护技术研究

Research on Deformation Law of Surrounding Rock and Supporting Technology of Roadway Influenced by Dynamic Pressure in Deep Mine

通过对平煤八矿深部动压影响巷道变形规律的长期观测,以位移速度为分界将工作面前后划分为无影响区、初始变形区、加速变形区、剧烈变形区、变形减缓区、稳定区六个区域。结合平煤八矿开采深度大、地质条件复杂、采动影响剧烈的基础上提出了先柔后刚、先让后抗、柔让适度、稳定支护的围岩支护原则,并发展了高预应力、强力支护技术。

Through long-term observations about deformation law of surrounding rock of roadway influenced by dynamic pressure in No.8 mine,the displacement speed as a dividing line,so around the working face was divided into six regions,including no effected area,the initial deformation area,speed deformation area,intense deformation area,slow deformation area,stable area.On the basis of great depth and complex geological conditions and dramatic impact on mining in No.8 mine,and then the supporting technology principle of first soft and after just and moderate soft are proposed,and development of the high priestesses and strong support technology.