Research on Roadway Failure and Support Technology in Fault Fractured Zone
In view of the situations such as high structural stress,broken coal rock and so on after the roadway excavation of the fractured zone of the 8207 working face in the second panel area of the C5# layer of Tongfa Dongzhouyao Coal Mine,through the analysis of the roadway failure mechanism and process of the fractured zone,a new type of combination support technology of"active support+grouting support"is proposed according to the roadway fractured zone support mechanism and fractured stability control principle,the deformation of the fault fractured zone roadway is significantly reduced.After the excavation of the roadway,there is no serious instability phenomenon of the roof falling happens.The relative displacement of the roof surrounding rock is less than 35 mm,and the relative displacement of the roadway side surrounding rock is less than 40 mm.The roadway surrounding rock is effectively controlled.
万方数据
维普
