掘进工作面过断层运输与回风巷道支护及效果分析

Analysis on the Support and Effect of Cross Fault Transport and Backwind Roadway in Heading Face

断层破碎区巷道有效支护对于煤矿安全生产具有重要意义。以山西沁和能源集团九鑫煤业有限公司205工作面运输与回风巷道过断层为试验对象,采用分析法对工作面运输与回风巷道过断层进行分析。提出冒落区顶板注浆治理、破碎围岩超前预注浆、锚杆+锚索+网的联合支护方式并对支护后的巷道围岩变形进行监测。监测结果表明,巷道顶板下沉量为60 mm、底鼓量为50 mm、两帮移近量为81 mm,巷道变形量较少,巷道得到了有效控制。

The effective support of roadway in fault breaking area is of great significance for coal mine safety production.Shanxi Qinhe Energy Group Jiuxin Coal Industry Co.,Ltd.205 working face transportation and return air roadway fault as the test object.The analysis method is used to analyze the cross fault of working face transportation and return air roadway.The combined support method of roof grouting treatment,pre-grouting of broken surrounding rock and anchor cable net in caving area is put forward and the deformation of roadway surrounding rock after supporting is monitored.The monitoring results show that the roof subsidence of roadway is 60 mm、the bottom bulge is 50 mm and 81 mm,the deformation of roadway is less,and the roadway is effectively controlled.