高水压突水危险工作面防治水关键技术

Key Technology of Water Prevention and Control for Coal Mining Face with High Water Pressure Water Inrush Dangers

为实现赵固二矿11011工作面在高水压突水条件下安全回采,对高水压底板进行加固,对断层进行预注浆治理;利用相似模拟实验对底板突水及加固效果进行研究;并应用经验公式、力学理论分析、神经网络和基于支持向量机等多种方法预测底板破坏深度为20.12～23.63 m;利用直流电勘探法测得底板破坏深度为23.48 m。结果表明:底板加固后富水区明显减小,部分区域富水区消失,断层水量明显减小,开采未发生突水危险,实现了工作面的安全回采。

In order to realize a safety mining of No. 11011 coal mining face under the conditions of the high pressure water inrush, the high pressure floor was reinforced and the fault was controlled with pre-grouting. The similar simulation experiment was applied to study the floor water inrush and the reinforcement effect. With the applications of the experience formula, mechanics theory, neural network and the ANN, PLC and others methods based on support vector machine, the predicted failure depth of the floor was 20. 12 - 23.63 m. With the application of the DC electric method, the failure depth of the floor was 23.48 m. The results showed that after the floor reinforced, the watery zone was obviously reduced, some area of the water zone was eliminated, the water quantity in the fault was obviously reduced, there was no water inrush danger occurred and the safety mining of the coal mining face was realized.