论文部分内容阅读
为了研究急倾斜多煤层开采条件下地表及围岩移动变形特点,以木城涧煤矿大台井急倾斜多煤层开采为研究对象,进行了相似材料模拟研究.揭示了地表移动变形规律和围岩垮落、破坏机理,得出了不同区域移动变形的大小及主要特点,并与实地观测数据进行了对比分析.结果表明:该条件下开采,地表沉陷盆地可分为露头塌陷区、整体沉陷区、渐变沉陷区和轻微沉陷区,浅部开采形成的地表分区格局对整个采动影响区的地表移动变形起到了控制作用,浅部开采覆岩破坏以陷落和张裂为主要特征,深部开采以离层带裂隙顺层通达地表和台阶错落下沉为主要特征.
In order to study the characteristics of ground surface and surrounding rock movement and deformation under the condition of steep inclined multi-seam mining, a similar material simulation study was conducted on the mining of the sharp-inclined multi-seam in Taitai Mine of Muchengjian Coal Mine.The law of surface movement and deformation of the surrounding rock The results show that: under the conditions of mining, surface subsidence basin can be divided into outcrop subsidence area, the overall subsidence area, Gradient subsidence area and slight subsidence area and shallow mining surface subsidence pattern have played a controlling role in the surface movement and deformation of the mining affected area. The overlying strata of shallow mining are mainly characterized by subsidence and breakage, Stratified layers of faults accessible to the surface and the steps scattered sinking as the main feature.