新疆大南湖煤田烧变岩水文地质参数研究  

Estimation of hydrogeological properties of a burned rock zone in the Dananhu Coalfield,Xinjiang

作　　者：韩冬梅[1] 曹国亮[2] 宋献方[1] 

机构地区：[1]中国科学院地理科学与资源研究所陆地水循环及地表过程重点试验室,北京100101 [2]北京大学水资源研究中心,北京100871

出　　处：《工程勘察》2015年第11期32-38,共7页Geotechnical Investigation & Surveying

基　　金：中国科学院青年创新促进会基金

摘　　要：烧变岩是煤层自然形成的一种特殊类型岩体,由于其良好的导水性和富水性,其中储存的地下水往往对煤田开采造成危害,而其对于干旱区的供水意义也不容忽视,其水文地质参数研究是烧变岩水文地质特征的重要研究内容。新疆吐哈地区大南湖煤矿区烧变岩分布广泛,以其中某烧变岩带为研究对象,利用群井大涌量抽水试验计算获得了烧变岩导水系数和给水度分布,认为导水系数计算值与抽水历时有关,采用抽水试验求取水文地质参数应注意抽水历时和烧变岩体的不规则形态造成的影响。Burned rock is a special type of rock produced by the combustion metamorphism of preexisting sedimentary rocks. Characterized by high hydraulic conductivity and specific yield,burned rocks generally threaten the coal mining. Its benefit on water supply also deserves attention,particularly in arid areas.Burned rocks distribute widely in the Dananhu coalfield in the Tuha region of Xinjiang Municipality. A multi-well pumping test is carried out in a typical burned rock zone,and its hydraulic properties are estimated using collected drawdown-time data. The results indicate that the hydrogeological parameters estimation should consider the effects of pumping duration time and the irregular shape of the boundary.

关 键 词：烧变岩 大南湖煤田 水文地质参数 地下水资源 

分 类 号：P641.73[天文地球—地质矿产勘探]