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介绍了新安煤矿11201工作面的工程地质条件和水文地质条件,分析了二1煤顶板覆岩的结构力学特征,计算了顶板覆岩破坏高度和保护煤柱留设厚度,给出了试采对比方案,预测了工作面回采时涌水量并提出安全防范措施。通过11201工作面的安全回采试验,论证了小浪底水库下安全采煤的可行性。
The engineering geological conditions and hydrogeological conditions of 11201 working face of Xin’an Coal Mine are introduced. The structural mechanics characteristics of overlying strata of No.2 coal seam roof are analyzed. The height of overburden strata of roof coal seam and the remaining thickness of coal pillar are calculated. Program to predict the gushing water when working face and put forward safety precaution measures. The feasibility of safe coal mining under Xiaolangdi Reservoir is demonstrated through the safe mining test of 11201 working face.