APPLICATION OF TRANSIENT ELECTROMAGNETIC METHOD TO PREDICTION AND CONTROL OF MINE WATER-DISASTER
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摘要: 通过对山东某矿3702工作面底板岩层富水性的实地探测,验证了瞬变电磁法在矿井水害预测防治中的应用效果。结果显示:(1)影响3702工作面安全开采的突水威胁主要为底板的岩浆岩富水,轨道巷90°、45°、30°探测方向分别发现富水条带1个、富水较强的区域4个,连续性较好的富水较强的区域5个;(2)3702工作面地板下划定3类富水区域且深部整体富水范围比浅部大。探测结果与钻探验证结果基本吻合,说明瞬变电磁法在矿井掘进巷道顶底板、前方或旁侧的含水构造及岩层的含水性探测等方面具有重大的实用价值。为井下水害预报和防治提供可靠依据。Abstract: The application effect of Transient Electromagnetic Method to water-disaster prediction and control in mine well is introduced through detection of water abundance of floor strata on 3702 working face in Shandong province.The results indicate that:(1)the main threat to mining on working face is higher water content of the floor magmatic strata, there are 1 watery strata zone, 4 watery areas and 5 watery strata areas with good continuity in detection direction of 90°, 45°, 30° to railway laneway;(2)3702 working face floor strata is divided into 3 class water rich area and the range of deep rich water area are larger than that of the shallow rich water area.The detection results basically tallies with the drilling verification, which indicate that the Transient Electromagnetic Method has great practical value for water abundance exploration in mine roadway, and provide a reliable basis for the prediction and prevention of mine water disaster.
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