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基于采场覆岩“垮落—断裂—弯曲下沉—地表沉陷”一体化过程,研究了岩层破坏与移动特征。根据裂隙带内岩层裂隙发育程度的不同而导致的岩层移动差异,将裂隙带划分为块体铰接带似和连续带,提出了采空区上覆岩层的“冒落带、块体铰接带、似连续带和弯曲下沉带”的“四带”划分,采用顶板铰接结构的形成条件、岩体稳定性系数和岩层裂隙分维数给出四带划分方法。
Based on the integrated process of overburden strata “collapse - fracture - bending sink - surface subsidence ”, the damage and movement characteristics of rock strata are studied. According to the difference of rock movement caused by the development degree of rock fracture in the fracture zone, the fracture zone is divided into block hinged zone and continuous zone, and the “caving zone, block hinge zone , Like continuous zone and curved sink zone ”“ ”four zone " division, using the formation conditions of the roof hinge structure, the stability coefficient of rock mass and fracture fractal dimension to give the four-zone division method.