综采工作面回采巷道遇破碎顶板控制及管理

Control and management of mining roof in fully mechanized face

以6301运输巷过断层为研究对象,采用RFPA对不同支护形式下的围岩控制效果进行分析,其中采用800mm×800mm锚网索支护围岩控制效果最明显。现场应用时采用注浆加固方式进一步提高围岩承载能力。运输巷采用联合支护后顶板下沉速率逐渐减小至小于1mm/d,取得了良好的加固顶板效果。

Taking 6301 transportation lane crossing faults as the research object,RFPA is used to analyze the control effect of surrounding rock under different support forms,the control effect of 800 mm×800 mm anchor mesh and cable support is the most obvious.In the field application,grouting reinforcement is used to further improve the bearing capacity of surrounding rock.The roof subsidence rate is gradually reduced to less than 1 mm/d after the combined support of the transportation lane,and a good roof reinforcement effect is achieved.