摘要
采用FLAC2D软件分析了大倾角中厚煤层沿空巷道应力、位移分布规律以及巷道围岩破坏特征。得出底鼓是该类型巷道围岩变形的主要特征。依据沿空巷道应力、内部岩层位移,提出采用锚杆(索)支护的合理措施。
The stress and displacement distribution laws of roadway driving along gob in steeply dipping angle and medium-thickness seam were analyzed by using FLAC2D software. The damage characters of roadway surrounding rock were also analyzed. It considered that the floor heave of roadway driving along gob was the principal character of surrounding rock distortion. According to circumstances of the stress of roadway driving along gob and the displacement of deep rock stratum, it raised a more rational measure to use bolt supporting.
出处
《矿业快报》
2007年第9期24-26,共3页
Express Information of Mining Industry
关键词
大倾角煤层
沿空巷道
底鼓
锚杆(索)支护
Steeply dipping seam
Roadway driving along gob
Floor heave
Bolt supporting
