随着地浸采铀技术取得突破,我国北方砂岩型铀资源勘探得到迅速发展,新发现和探明了一批大型、特大型铀矿床.2015年,地浸采铀产量约占国内天然铀总产量的60％,天然铀产业结构已经由常规硬岩开采为主转变为砂岩地浸采铀为主.由于地浸采铀工艺的特点,其采区地下水的保护工作被公认为是制约地浸采铀发展的主要问题.本文通过分析钱家店Ⅱ块铀矿床采区地下水监测影响因素,得出钱家店铀矿床监测井与采区边界的适宜距离为120 m,新建监测井本底测量的最佳时间是成井8d之后.%With technical breakthroughs in situ leaching uranium,northern sandstone type uranium resources exploration in China is rapidly developed,a batch of large and super large uranium deposits are newly discovered and proved.In 2015,about 60％ uranium of the total domestic natural uranium production is producted by in situ leaching,natural uranium has been changed from the hard rock mining industrial structure into a sandstone mainly uranium.Because of the characteristics of the process of uranium,the mining area of groundwater protection is recognized as one of the major problems of in situ leaching restricting the development of uranium.In this article,through analysis influcen factors of monitoring groundwater of Ⅱ block of Qianjiadian uranium deposit,it is concluded that monitoring wells suitable distance to mining area boundary is 120 m,and the best time for measurement background level in a newly built monitoring well is 8 days after its construction.
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