干旱地区烧变岩地下水资源储量计算方法研究

新疆哈密大南湖矿区属典型的大陆性气候,日照时间长,降雨量小,年蒸发量是年降雨量的80倍以上。该矿主要含煤地层为侏罗系西山窑组。煤层厚,埋藏浅且易自燃,因而烧变岩区分布广泛。通过对矿区的自然地理、水文地质条件、单孔、群孔抽水试验资料的综合分析,认为区内烧变岩地下水的存储以静储量为主,并运用体积法、单位储存量法两种方法进行地下水资源储量计算。通过计算对比,认为用体积法计算的地下水存储量较为可靠。该方法对其他类似区的地下水资源储量计算有较高的参考价值。

Reserve Estimation Researches on Burnt Rock Groundwater Resources in Arid Areas

The Dananhu mine area in Hami, Xinjiang has a typical continental climate with long sunshine, small amount of rainfall, annual evaporation is above 80 times more than annual rainfall. The main coal-bearing strata belong to Jurassic Xishanyao Formation.Coal seams are thick with shallow buried depth and easy to be spontaneously combusted, thus widely distributed burnt rocks. Through comprehensive analyses of mine area physical geography, hydrogeological condition, single well and group wells pumping test data,have considered that the burnt rock groundwater storage is mainly static reserves. Using volumetric method, specific storage method carried out groundwater reserve estimation. By results comparison, has considered that the volumetric method is rather reliable. The method has provides higher reference value for similar areas groundwater reserve estimation.