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 deforma-tion 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.%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.
展开▼
