Study On Pressure Behavior And Control Technology Of Roadway Strongly Influenced By Dynamic Pressure

Surrounding rock pressure behavior and control technology of roadway strongly influenced by the dynamic pressure has been one of the challenges facing the coal mining. In this paper, Duan Wang coal mine090606working face belt tunneling as the research background, Through theoretical analysis, numerical simulation research and field research, focusing on the tunneling adjacent to the near working face, the surrounding rock evolutionary rule of stress distribution and displacement law, reasonable roadway supporting.First of all,On the basis of the analysis of the influence of dynamic pressure roadway surrounding rock stress distribution, advanced support pressure distribution of090604working face adjacent to090606the belt roadway and the rear gob side support pressure were studied; The second, The dynamic pressure effect of failure mechanism of roadway surrounding rock and surrounding rock control technology is analyzed, and draws the following conclusions:the influence of dynamic pressure roadway surrounding rock instability mainly occurred in the surrounding rock of roadway structure parts of weak (weak structure of surrounding rocks body), and elaborate the body and adjacent weak structure on the internal structure of the weak interaction of rock. The end, by the method of numerical simulation, the deformation of excavation to adjacent near the working face by evolution, strong dynamic pressure effect of roadway surrounding rock stress and displacement evolution, force of the bolt and displacements of surrounding rock under bolt support were analyzed.The industrial test results show that, Duan Wang coal mine966belt roadway which is strongly affected by dynamic pressure support method is reasonable and effective can meet the needs of090606working face, assurance the normal face to succeed.