开采后复杂地形地表下沉变形规律研究

Study on the Law of Subsidence and Deformation of Complex Terrain after Mining

通过对西山煤电镇城底矿22618工作面地表岩移的观测,分析了地表基础沉陷、水平位移以及移动规律。经分析可知:在开采初始阶段,山区坡体对地表移动变形有较大的影响;且皮带基础最大倾斜和曲率均已超过"三下采煤规程"中给定的三个临界变形值,为该类矿区实施"三下"采煤工作,为保护煤柱设计提供了科学依据。

Based on the observation of surface rock displacement in the 22618 working face of Zhenchengdi Mine of Xishan Coal and Power, the subsidence, horizontal displacement and movement law of surface foundation are analyzed. The analysis shows that in the initial stage of mining, the slope body in mountainous area has a great influence on the surface moving deformation, and the maximum inclination and curvature of belt foundation have exceeded the three critical deformation values given in the "three coal mining regulations ". It provides scientific basis for protecting pillar design.