Dynamic Pressure Effect of Roadway Surrounding Rock Control Technology
The effect of dynamic pressure on 13084 transport along channel tunneling in a northwest-ern mine is numerically simulated.The results show that,on the 40th day,the upper mining face of 13084 transport trough collapsed,and the dynamic pressure generated extended to this area,resulting in the over-all collapse of 13084 transport trough section.According to the observation data of the roof,the overall dis-placement of the roadway reaches a maximum of 629 mm when the original support measures are adopted on the 30th day in the transportation groove of 13084,and the deformation of the roadway is serious at this time.The maximum deformation of roadway is 59 mm by adopting pipe shed support and U-shaped steel re-inforcement support measures,which effectively control the pressure influence of 13084 transport along the channel and stabilize the surrounding rock.
dynamic pressurenumerical simulationroof observationreinforcement support
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