Hydrogeological Characteristics and the Coal Floor Water Inrush Mechanism Analysis in Wutong Zhuang Coal Mine of Hebei Province

摘要

Wutong zhuang coal mine is a large state-owned coal mine in southern hebei province, built well and a total of 8 times water inrush accident during the production, the maximum yield of 3400 m~3/ h,which caused huge economic losses and casualties. Based on the analysis of the mine hydrogeology and water inrush features, evaluating the mine hydrogeological conditions. Using the principle of strain ellipsoid in geological structure and studying about the arc special WeiWuZhuang anticline structure which is a special arc structure, studies have found that a lot of tension joint develop in concave and convex parts of anti cline of an axis, tension joint is underlying confined aquifer water channel. Research results has avcertain guiding role to the mine and the construction of other work of similar construction the prevention and control of water in the mining field has a certain guiding role.