干旱地区烧变岩地下水资源储量计算方法研究.docxVIP

文章编号:1674-1803(2014)09-0040-03干旱地区烧变岩地下水资源储量计算方法研究 文章编号:1674-1803(2014)09-0040-03 干旱地区烧变岩地下水资源储量计算方法研究 孙德全 1，张兆民 1，武 凡2，谢兴友 2，鲁孟胜 1 (1.山东省煤田地质规划勘察研究院，山东 泰安 271000；2.山东泰山地质勘查公司，山东 泰安 271000) 摘 要：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。 关键词：干旱地区；抽水试验；地下水储存量；体积法；单位储存量法；大南湖矿区；烧变岩 中图分类号：TD745+.21 文献标识码：A Reserve Estimation Researches on Burnt Rock Groundwater Resources in Arid Areas Sun Dequan1, Zhang Zhaomin1, Wu Fan2, Xie Xingyou2 and Lu Mengsheng1 (1. Shandong Provincial Coal Geological Planning, Exploration and Research Institute, Taian, Shandong 271000; 2. Shandong Taishan Geological Prospecting Company, Taian, Shandong 271000) Abstract: The Dananhu mine area in Hami, Xinjiang has a typical continental climate with long sunshine, small amount of rainfall, an? nual 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 car? ried out groundwater reserve estimation. By results comparison, has considered that the volumetric method is rather reliable. The meth? od has provides higher reference value for similar areas groundwater reserve estimation. Keywords: arid area; pumping test; groundwater storage; volumetric method; specific storage method; Dananhu mine area; burnt rock 0 引言 每种煤都有发生自燃的可能[1]。烧变岩是受煤 层自燃烘烤或烧熔的围岩。在我国西北地区，由于 日照强，气候干旱，降雨量小，煤层厚，煤层埋藏浅等 特点，煤层自燃现象普遍，烧变岩区分布广泛。烧变 岩裂隙发育，岩石强度低，极易储水[2]，一般为煤层 直接充水含水层，对煤矿开采构成威胁。计算烧变 岩地下水