摘要
为保障汾西矿业集团中兴煤业2号煤层回采过程中底板不出现突水事故,通过建立底板突水风险拟合的评价模型,结合2号煤层水文与地质条件,对煤层底板突水的危险性进行分区,同时采用脆弱性指数法对底板突水的危险性进行预测,分别将底板突水危险性分为危险、较危险、过渡、较安全和安全5个分区。两种评价模型相互补充,综合两次模型的评价结果,得出煤层在回采过地质构造发育、底板含水层水压较强、底板有效隔水层厚度较薄区域时,存在突水危险性,需加强探放水作业。
In order to ensure that there is no water inrush accident in the recovery of No. 2 coal seam in Zhongxing Coal Mining Group of Minxi Mining Group, an evaluation model for the risk of water inrush from the floor was established, combined with the hydrology and geological conditions of No. 2 coal seam, water inrush from the coal floor. The risk of water inrush from coal seam floor was divided, and the vulnerability index method was used to predict the risk of water inrush from the floor. The risk of water inrush from the floor was divided into 5 sections: dangerous area, moderate dangerous area, transitional area, safe area. The two evaluation models complemented each other and combined the evaluation results of the two models. It was concluded that there was a risk of water inrush when the coal seam has developed geological structures, the water pressure in the aquifer was strong, and the thickness of the effective aquifer was thin. It was necessary to strengthen the water exploration and release operations.
作者
王永信
Wang Yongxin(Shanxi Fenxi Mining Group Safety Supervision Five-person Group Administration, Jiexiu 032300, China)
出处
《煤炭与化工》
CAS
2019年第7期38-41,共4页
Coal and Chemical Industry
关键词
地质构造
水害防治
评价模型
geological structure
water damage prevention
evaluation model
