The maximum subsidence induced by mining bedding ore(such as coal seam) is an important parameter for estimating the degree of surface movement and deformation.
最大下沉值是度量层状矿体（如煤层）开采引起的地表移动变形程度的重要参量。
The deformation characters of the broken rocks are the important factors that affect the roof caving and surface subsidence above goaf in coal mining.
破碎岩石的变形性质是影响采空区覆岩垮落与地表沉陷的重要因素。
The problems of stability of surface movement and deformation as time goes on and residual distortion are always important aspect of mining cover-rock subsidence study.
地表移动变形随时间的稳定性及剩余变形问题一直是采动覆岩沉陷研究的重要方面。
It is showed that:(1)the major surface damage patterns due to grinding are microplastic deformation trace, fracture chipping pit, microcracks, and subsidence in the loosen region of material;
结果表明：磨削损伤的主要形式有显微塑性变形磨痕、断裂剥落坑、磨削微裂纹和材料疏松区的塌坑；
A case study shows that this method is an available approach to investigate the mechanism of rock mass deformation and ground surface subsidence.
实践证明，所采用的综合研究方法是分析岩体移动和地表下沉机制的有效途径。
A case study shows that this method is an available approach to investigate the mechanism of rock mass deformation and ground surface subsidence.
实践证明，所采用的综合研究方法是分析岩体移动和地表下沉机制的有效途径。
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