厚煤层综放沿空留巷围岩控制技术研究

Research on surrounding rock control technology of thick coal seam along caving roadway

为了有效的控制16021工作面运输巷沿空留巷的合理变形,通过分析留巷内基本支护的控制效果,提出在基本支护的基础上进行加强支护及巷旁支护,并对留巷期间围岩变形、锚杆受力状态进行监测。结果表明:运用高水材料进行巷旁充填,工作面后方0～60m围岩移近量大,锚杆载荷增大主要在工作面后方20～40m范围内,该种巷道支护方案能够有效控制沿空留巷围岩变形。

In order to effectively control the reasonable deformation of roadway along empty roadway in working face 16021,by analyzing the control effect of basic support in the roadway,it is proposed to strengthen support and side support on the basis of basic support,and monitor the deformation of surrounding rock and the stress state of anchor rod during the period of roadway leaving.The results show that:the high water material is used for the lateral filling of roadway,the wall rock of 0~60m behind the working face has a large amount of displacement,and the increase of anchor load is mainly within 20~40m behind the working face.This kind of roadway support scheme can effectively control the surrounding rock deformation along the empty roadway.