西曲矿8号煤层沿空巷道围岩变形规律及控制研究

Study of Surrounding Rock Deformation Lawof Gob-side Roadway and Control Technology of Xiqu Coal Mine

基于西曲矿18404工作面沿空掘巷实际地质条件为工程背景,采用理论计算和数值模拟相结合的方法,研究了窄煤柱宽度对沿空巷道围岩变形规律的影响,研究发现,随着煤柱宽度的增加,围岩变形破坏得到明显改善,并以此确定煤柱的合理宽度;对于沿空巷道围岩变形的控制,依据工程类比,给出支护方案,并在实际生产中取得了较好的效果。

Take Xiqu coal mine 18404 working face as the engineering background,the method of combining the theoretical calculation and numerical simulation,studied the narrow coal pillar width influence roadway deformation law of surrounding rock,the study found that with the increase of coal pillar width,significant improvement of surrounding rock,and to determine the reasonable width of coal pillar.According to the engineering analogy,the support scheme is given in the control of the surrounding rock deformation along the empty roadway,and get the good results are obtained in actual production.