村庄下压煤条带开采技术

以小屯矿村庄下压煤的实际条件为基础,根据条带式开采现有的相关理论,运用现场数据和经验公式预算的方法,确定采留宽度的安全范围,设计出不同煤柱采留宽度的开采方案;进而通过有限差分数值模拟分析,对各开采方案的煤柱稳定性进行数值计算,为最优方案的合理选取提供依据;并在此基础上,进行地表移动与变形的仿真预测,揭示条带开采的地表移动变形规律,指导小屯矿生产实践。

Strip Mining Technology Under Villiages

Based on the geological mining conditions under villages in Xiaotun coal mine,and according to the existing theories of the strip mining,the safety ranges of mining and retained widths could be confirmed and the mining schemes for different widths of coal pillar could be designed by using the methods of analyzing the field measurement date and calculating by empirical formula.Then the coal pillar stability of each mining scheme was calculated through numerical analysis of finite differetial method,which provided the basis for appropriately selecting the optimum scheme.On this basis,through simulation prediction of the surface movement and deformation,the surface movement and deformation laws of strip-partial mining were revealed to guide production of Xiaotun coam mine.