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以大同矿务局忻州窑矿8916面为基础,根据对支架载荷频率分布特征的分析,揭示了步距式预爆破处理坚硬顶板前后不同的矿压显现特征,并用统计假设检验法验证了两个时期支架载荷的差异性,求出差异的具体数值,得出综放工作面来压相对缓和的结论。
Based on the 8916 surface of Xinzhou Kiln mine in Datong Mining Bureau, according to the analysis of the distribution characteristics of the load of the supports, different characteristics of ground pressure before and after the treatment of the rigid roof with step-type pre-blasting are revealed, and the statistical hypothesis test is used to verify the two Period stent load differences, find the difference between the specific values, come to the conclusion of the comprehensive caving face pressure to ease.