Numerical Simulation and Analysis on Displacement Variation of Overlying Stratum in 1252 Working Face of Yangliu Coal Mine
LIAN Youhong
DENG Tao
CAI Yinying
Abstract：Based on the simplification of No. 1 surface gas drainage borehole of 1252 working face of Yangliu Coal Mine, a plane numerical simulation model was built for simulating the stress and displacement variation of the overlying stratum in the working face. The simulation research results showed that with the increase of the advance distance of the roof in front of the coal wall, the main stress zone increased, and the fracture zone in the immediate and main roofs also increased accordingly; the horizontal displacement in different depths of the borehole had the tendency to increase. This research has the guiding significance for understanding the failure mechanism of the surface gas drainage borehole and the borehole layout.
Keywords：gas drainagesurface boreholeoverlying stratum in working facedisplacementnumerical simulation
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 75-78 )