湖下深部开采下组煤底板突水危险性分区分级预测

发布时间：2018-10-12 11:09

【摘要】：为合理评价滨湖煤矿161西采区16煤底板奥灰突水危险性,在分析采区地质及水文地质特征的基础上,利用突水指数法,选取奥灰含水层的水压、断层密度、断层交点和端点的分布、断层规模指数、底板有效隔水层厚度5个因素作为煤层底板突水预测的主控因素,并制作专题图和均一化图,建立了突水指数评价模型,并进行了危险程度分级分区预测。研究结果表明:按照突水指数n0.56、0.56≥n0.43、0.43≥n0.35、0.35≥n0.23、n≤0.23,将煤层底板奥灰突水危险等级分别划分为极危险区、危险区、较危险区、较安全区和安全区,评价结果与突水指数法结果相比预测结果更加详细准确,也与实际较为吻合,有助于指导滨湖煤矿161西采区防治水工作。
[Abstract]:In order to reasonably evaluate the risk of Ordovician ash water inrush from 16 coal floor in west mining area 161 of Binhu Coal Mine, based on the analysis of geological and hydrogeological characteristics of mining area, the water pressure and fault density of Ordovician ash aquifer are selected by using water inrush index method. The distribution of fault intersections and endpoints, the index of fault scale and the thickness of effective water barrier layer are the main controlling factors for water inrush prediction of coal seam floor, and the thematic map and homogenization map are made, and the evaluation model of water inrush index is established. The risk degree was predicted by classification and zoning. The results show that according to the water inrush index n0.56n0.56 鈮，

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