二_1煤东翼疏水巷突水机理分析

Second, the hydrophobic coal-East Water Outburst Mechanism

二1煤东翼疏水巷掘进距离400m时,巷道308m处发生滞后突水事故,初始水量500m3/h,后稳定在400m3/h,四个月后260m3/h左右。由于工作面突水水量较大,工作面排水能力较小排水不及而导致-290m标高以下附近巷道全面被淹。本文通过对工作面充水水源分析,分析得出突水原因及突水水源、突水通道,为下步防治底板承压水提供了资料依据。

Second, the hydrophobic coal roadway from the east wing of 400m, the 308m tunnel water inrush delay took place, the initial water 500m3 / h, after the stable at 400 m3 / h, four months after the 260m3 / h or so. Large quantity of water as working face, face less drainage capacity caused by low water elevation of -290 m near the following comprehensive flooded roadway. Based on the Face Water water analysis, analysis of reasons and come to sudden inrush of water sources, sudden water channel, the next step for the prevention and treatment information on floor with pressurized water provides the basi.