华北煤田岩溶水威胁矿井突水临界值的探讨

Discussion on the critical value of the water inrush of mines in the Northern China Coalfield

突水系数法因其数据易得、操作简便等优点在我国各地煤矿评价底板突水危险性中被广泛使用,然而突水系数临界值研究尚不够深入,多是凭经验获得。针对这一问题,通过对突水系数等方法的分析,表明了P临—M关系曲线法(统计法)优于突水系数法等评价方法。以团柏井田为例,收集相似矿井的一些突水工作面和安全工作面的突水资料,进行对比分析,从数理统计的角度出发得出了团柏井田的突水临界值,实践证明其预测准确率较高,为煤矿防治水工作提供了一个研究思路。

The water inrush coefficient method is widely used in coal mines in China for evaluating the risk of floor water inrush due to its easy data and operation.However,the critical value of water inrush coefficient is not deep enough.Based on the analysis of water inrush coefficient method,the P-M relationship curve method(statistics)evaluation is better than the water inrush coefficient method,and with Tuanbo Mine as an example,through the comparison of similar coal mine,and collected some similar mine water inrush in working face and the safety of working face water inrush data were analyzed by the statistical point of view that the critical value of water inrush in Tuanbo Mine,the practice proved that the prediction accuracy was high,providing reference method for mine water prevention.