锚杆支护参数对井巷围岩变形的影响分析

Analysis of the Influence of Bolt Support Parameters on the Deformation of the Surrounding Rock of the Tunnel

为进一步提升锚杆对井巷围岩变形的控制效果,应根据井巷实际地质、煤层等条件综合确定锚杆支护参数。以3号煤层所属工作面为例,在分析其地质、煤层等条件以及支护现状的基础上,建立数值模拟模型,着重对不同锚杆长度、锚杆直径以及锚杆间距对井巷围岩变形的控制效果进行对比分析,最终得出最佳锚杆支护参数。

In order to further improve the control effect of anchor rod on the deformation of surrounding rock in roadway,the parameters of bolt support should be determined synthetically according to the actual geology and coal seam of roadway.Taking the working face of No.3 coal seam as an example,on the basis of analyzing its geological,coal seam and supporting status,a numerical simulation model is established to co MPare and analyze the control effect of different bolt length,bolt diameter and bolt spacing on the deformation of surrounding rock in roadway,and finally to obtain the best bolt support parameters.