三软煤层大巷修复技术数值模拟

Numerical Simulation on Repair Technique of Three-soft Seam Main Roadway

用三维有限差分法数值计算程序FLAC3D,模拟了锚网喷、架棚等多种支护条件下巷道的变形和破坏。分析表明,大巷发生的严重变形破坏是由于多种因素所致,其中采动压力是引起巷道变形破坏的主因。数值模拟结果对选用合理大巷支护方式具有一定参考意义,FLAC3D数值模拟软件能较好地应用于现场。

Simulated the deformation and breakage in roadway under different support scheme with FLAC3 D program. According to the analysis it is concluded that the roadway deformation and failure due to a variety of reasons. Among them, the mining pressure is the primary reason of roadway deformation or destruction.The results of numerical analysis can provide a certain reference for selecting reasonable support patterns of main roadway, and FLAC3 Dprogram can be used at on-site mining.