证实了剪切滑移区的存在，并按覆岩运动规律与破坏特征对围岩进行了分区。
The existence of a shear slip zone is proved, and the overlying strata are divided into different zones according to the rules of strata movement and characteristics of rock failure.
该系统可以根据采场的覆岩条件及开采参数，预计采场覆岩的运动规律，为安全开采提供科学依据。
That system can forecast movement of site cover rock and provide the scientific bases for safe exploitation according to the conditions of cover rock of the site and the exploitation parameters.
运用关键层理论研究了采场覆岩结构特征及运动规律。
Based on the key stratum theory, the structure characteristics and movement laws of overlying strata with different mining height are studied.
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