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在分析以榆树湾煤矿为代表的厚土层浅埋煤层的地质资料的基础上,采用岩石破裂过程的分析软件RFPA进行数值模拟.得出了冒落带高度为31m,裂隙带带高度为90m,弯曲下沉带为35m左右,研究结果表明:该矿的上覆岩层的采动变化与常规矿相似,并没有出现浅埋煤层的上覆岩层“三带合一”的现象;通过经验公式计算的导水裂隙带高度为70～100m,裂隙带并未沟通含水层,研究结论厚土层浅埋煤层可以达到保水采煤的目的.
Based on the analysis of the geological data of shallow coal seam in the thick coal seam represented by the Yushuwan coal mine, numerical simulation was conducted using RFPA, a software for rock fracture analysis, and the results showed that the height of the caving zone is 31m and the height of the fracture zone is 90m , And the bending sink zone is about 35m. The results show that: the overlying strata of this mine have similar mining changes with conventional mine, and there is no phenomenon of “overburden” of overlying strata of shallow coal seam; The height of water-conducting fractured zone calculated by empirical formula is 70 ~ 100m, and the fractured zone does not communicate aquifer. It is concluded that the shallow-buried coal seam in thick soil layer can achieve the purpose of water-conserving coal mining.