山体赋存煤层群开采边坡失稳规律研究

Study on Slope Instability Law of Coal Seam Group Mining in Mountain

以贵州发耳煤矿山体赋存煤层群地质条件为工程背景,通过分析采动过程中山体的变形规律、坡面上的开采沉陷规律、坡角的变化规律等,研究煤层开采引起边坡失稳的规律。山体赋存条件下开采容易引起山体变形破坏、坡角增大等,导致边坡局部出现剪切破坏面进而引起边坡失稳。通过山体条件下开采边失稳规律分析,可对山体边坡安全分析评估,针对局部剪切破坏采取防治措施,保障山体赋存条件下安全开采。

The geological conditions of the existing coal seam group in Faer Coal Mine in Guizhou province are taken as the engineering background, and the law of slope instability caused by coal seam mining is studied by analyzing the deformation law of the mountain, mining subsidence law of slope surface and change law of slope angle in the mining process. Mining under the condition of mountain occurrence is easy to cause mountain deformation and failure, increase of slope angle, etc, which leads to the local shear failure surface of the slope and causes the slope instability. With the analysis of mining slope instability under mountain condition, the safety analysis and evaluation of mountain slope can be conducted, and prevention measures can be taken for local shear failure to ensure safe mining under mountain condition.