厚松散层条件下开采程度及地表下沉模式的研究

Study on mining degree and patterns of ground subsidence in condition of mining under thick unconsolidated layers

以岩体力学为工具,以实测资料为依托,对厚松散层条件下采动过程中岩层破坏及地表下沉过程进行了分析,进而对开采程度及地表下沉模式进行了研究,发现了两者之间的对应关系以及弯曲型、断裂型和充分型下沉模式的不同形成机理及表现形式.在此基础上,给出了断裂临界开采宽度和充分临界开采宽度的计算公式.

In this article,the processes of strata breakage and ground subsidence in the condition of mining under thick unconsolidated layers are particularly analyzed by means of rock mechanics, the different patterns and mechanisms of ground subsidence are discovered and illustrated,which are verified by actual measurement data,meanwhile,the methods for judging different subsidence patterns are introduced. And further more,the formulas for computing the extents for fracture mining and critical mining are presented.