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利用FLAC3D数值模拟软件,以补连塔煤矿近水平煤层为背景,对不同结构介质条件下的现代煤炭开采分别进行数值试验。结果表明:在同样强度的开采下,坚硬覆岩具有较强的抗扰动能力,工作面安全开采及地表受到的影响相对较小,而软弱覆岩抗扰动能力较弱,工作面溃沙、透水事故较容易发生,工作面安全开采及地表受到的影响相对较大;并且坚硬岩层离工作面较近时,覆岩受开采扰动影响较大。
Using FLAC3D numerical simulation software, the numerical experiment of modern coal mining under different structural media conditions is conducted on the background of the near horizontal coal seam in Completion Tower. The results show that under the same intensity of mining, hard overburden rock has strong anti-disturbance ability, safe mining face and surface affected relatively small, and weak overburden rock anti-disturbance ability, the face of the collapse of sand, seepage Accidents are more likely to occur, mining face safety and surface affected relatively large; and the hard rock near the face, the overburden rock affected by mining disturbance.