Practice study on prevention and control of Xinjiang Jurassic coal seam for underground"reservoir"type water disaster
The Jurassic coal-bearing strata are widely developed in Xinjiang,and the control of water damage has gradually become a key issue affecting the exploration and development of coal resources.Based on the summary and analysis of the occurrence characteristics of Jurassic coal-bearing strata in Xinjiang,this paper discussed the hydrogeological characteristics and water damage factors of coal mine,and put forward the underground"reservoir"type water disaster control scheme combining with the practical cases of water accumula-tion control in burning area and goaf.The research shows that the proved mining areas in Xinjiang are mainly concentrated in six areas.The direct water-filled aquifers of Jurassic coal seam mining are mainly fractured aquifers of clastic rock in the roof and floor,with weak water-rich,but water-filled areas are easy to form in burning areas,old kilns,goaf and fault fracture zones,resulting in underground"reservoir"type water disaster.Through the prevention and control practice cases,it was found that the water accumulation area can be determined by ground geophysical exploration and drilling verification,and the drainage method by drilling above and below well can solve the threat of water disaster and ensure the safety of coal mine production.
XinjiangJurassic coal seamunderground"reservoir"type water disasterwater disaster prevention and control
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