Study On Three-Dimensional Distribution And Controlling In Surrounding Rock Of Mining Roadway

As the reformation of exploit technology and the improvement of throughput in coal mine, gate section gets bigger and bigger ,which brings more difficulty in supporting . Mining traffic road lies in coal seam which is subjected to mining affect during serving time iteratively. Surrounding rock of gate generally distorts severely and it is especially hard in supporting. So studying the stability and relative parameters of the gate has very important signification.This dissertation, based on theoretical analyses and numerical simulations, compares elastic model to plastic model which built on geology of YueCheng mine in Jincheng, on different conditions ,without bolt supporting and with supporting , by using FLAC^3D numerical simulation , on the precondition considering of the tardigrade creeping of rock. We get the general breakage regulation about wall rock of mining traffic road through contrastive analysis. There is tension effect in bottom mostly, and tension in middle roof, shear in side roof .Besides ,it occurs shear effect in road corner, shear-tension effect in middle section of wall rock mostly. Especially, the rock within 6m distance of the working face is subjected to mining affect, which is necessary to do supporting ahead and...