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气候干旱、地处毛乌素沙漠边缘的侏罗纪煤田-柠条塔煤矿S1210工作面回采推进约61 m时,发生了涌水强度大(初始1 200 m3/h后稳定在1 000 m3/h)、持续时间长(约2个月)的大型顶板涌水水害。打破了水文地质条件简单、2-2煤上覆侏罗系砂岩地层富水性弱、透水性差等传统认识。基于对该区水文地质条件的重新分析和认识,提出并实施一种将地质调查、钻探、物探、化探及水文实时监测等技术手段有机地结合为一体的井上下综合立体探测技术。探查分析了涌水水源,利用同位素测试技术分析了该区水文循环途径,进而对该面的整体水文地质条件进行了分析,为该面水害治理方案制定提供技术分析依据。
Arid climatic conditions in the Jurassic coalfield at the margins of the Muaussu Desert - Large influx intensity (stable at 1 000 m3 / h after initial 1 200 m3 / h) occurred at about 61 m of mining at S1210 in the Caopingta coal mine, Long-term (about 2 months) large roof gushing water damage. Breaking the simple hydrogeological conditions, 2-2 coal overlying the Jurassic sandstone formation of weak water-rich, poor water permeability and other traditional understanding. Based on the reanalysis and understanding of the hydrogeological conditions in the area, a comprehensive uphole and downhole three-dimensional exploration technology is proposed and implemented, which combines the technical means of geological survey, drilling, geophysical exploration, geochemical exploration and hydrology real-time monitoring. The source of gushing water was explored and analyzed. The hydrological cycle route of the area was analyzed by using isotope test technique. Then the overall hydrogeological condition of the surface was analyzed, and the technical analysis basis was provided for the plan of water damage control.