兖州田庄矿11610工作面开采上限的研究

为了11610工作面生产的接续，田庄矿根据已有资料及邻近矿井资料，结合数值模拟分析提出了覆岩开采破坏规律，提高了煤矿开采上限。

Study of Mining Upper Limit of Section 11610 in Tianzhuang Coal Mine,Yanzhou of Shandong Province

Located in the northwest of Yanzhou coal field,the mining upper limit of section 11610 in Tianzhuang Coal Mine is anxious to be increased under a condition of near level plane in order to meet the demand of a continuous production. Through operation of three underground drilling-holes,the project scheme of disruption rule of mining capping rocks and upper limit are raised on the basis of value analogous analysis to capping rocks deformation characteristics. The analogous analysis and practical operation show that a 23 5m waterproof coal pillar in the roof is suitable to ensure production security,offering a good economic benefit.