厚煤层条带法开采覆岩移动和变形规律模拟

Simulation on thick coal seam strip mining overlying strata movement and deformation

为解决厚煤层条带开采覆岩移动和变形规律问题,采用相似材料模拟试验的方法对厚煤层三维条带综放开采进行研究,分析覆岩及地表的移动与变形规律,确定岩层内部的各移动角值,地表沉降系数等.研究结果表明:地表沉降呈现出走向、倾向主断面相对称的下沉趋势,地表形成了单一均匀的下沉盆地;三维相似材料物理模型试验能够较全面地反映出原型覆岩的各种变形、移动、应力、应变的变化规律,为实际开采提供了可靠依据.

In order to reveal the thick coal seam overburden strata movement and deformation rule of mining, through the equivalent material simulation study on 3D strip mining and caving the roof method of thick coal seam, this paper ascertained the law of movement and deformation of mantle fock and ground surface. Three dimensional similar material physical model test can reflect the variety of overlying strata deformation, mobile, a prototype of the variation law of stress, strain. The traveling angle values in rock stratum, surface subsidence coefficient, provided reliable reference for mining.