1992年以来，永夏矿区各矿井相继进行了采区高分辨地震勘探。
Since 1992, the highresolution seismic explorations of working areas have been conducted successively in various mine shafts of Yongxia mining district.
预测结果对于提高各矿井防突措施的有效性和针对性具有一定的参考价值。
The predicted results would provide certain reference values to increase the efficiency and aiming of the outburst prevention measures of each mine.
目前国内各矿井的排水系统多采用传统的继电器控制方法，用人工进行监测。
At present, most drainage systems of all domestic coal mine well adopt conventional means of relay controlling, inspected artificially.
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