罗北凹地液体钾盐矿深部承压卤水特征及其开采方法试验研究
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  • 英文篇名:Characteristics and Mining Method Experiment of Deep Artesian Brine in Potash Deposit in the Luobei Depression
  • 作者:李文学 ; 张凡凯 ; 王江 ; 陈伟 ; 杨宝恒
  • 英文作者:LI Wenxue;ZHANG Fankai;WANG Jiang;CHEN Wei;YANG Baoheng;SDIC Xinjiang Lop Nor potash mineral resources limited liability company;
  • 关键词:液体钾盐矿 ; 承压含水层 ; 抽水试验 ; 爆破法 ; 大气联通法 ; 罗北凹地
  • 英文关键词:liquid potash mine;;confined aquifer;;pumping test;;blasting method;;atmospheric connection method;;Luobei Depression
  • 中文刊名:DZXE
  • 英文刊名:Acta Geologica Sinica
  • 机构:国投新疆罗布泊钾盐有限责任公司矿产资源部;
  • 出版日期:2018-08-15
  • 出版单位:地质学报
  • 年:2018
  • 期:v.92
  • 基金:中央专项《(矿产资源节约与综合利用专项资金)(新国土资函[2011]720号)》项目;; 国投新疆罗布泊钾盐有限责任公司《罗布泊深部承压卤水疏干开采试验》及《罗北承压卤水(W2、W3、W4)水文地质参数验证研究》配套研发资金支持项目
  • 语种:中文;
  • 页:DZXE201808005
  • 页数:12
  • CN:08
  • ISSN:11-1951/P
  • 分类号:59-70
摘要
罗北凹地钾盐矿是个地下存在多层富钾卤水的大型液体钾盐矿床,一共分为7个富钾卤水层,第一层为潜卤水W_1,下部6层(W_2、W_3、W_4、W_5、W_6、W_7)为承压卤水。目前生产开采对象主要为埋藏较浅且易于开采、富水性较好的潜卤水及部分承压含水层中的弹性释水。随着公司生产规模的扩大,矿区的年采卤量也随之增加,有的区域将很快面临开采富水性差及较难开采的深部承压卤水,但是承压卤水通常储存于较为致密的结晶盐层或碎屑层的孔隙或溶隙中,其含水地层水文参数相比潜卤水W_1要小很多,造成深部富钾的承压含水层卤水疏干采出难度较大。本文采用爆破法及大气联通法在罗北凹地钾盐矿区不同水文地质区域对深部承压含水层进行大规模抽水试验研究,确定了不同水文地质区域深部承压卤水合理且经济的开采方法,实现了罗北凹地钾盐矿(W_2、W_3、W_4)深部含钾承压卤水资源的大规模有效采出,将很难利用的深部富钾承压水变成可利用资源,提高了罗北凹地液体钾盐矿的深部承压卤水资源的利用率。
        Potash deposit in the Luobei depression is a large-sized underground liquid potash deposit,and contains seven aquifers of potassium-rich brines,with the first(W_1)being K-rich brine aquifer and others(W_2,W_3,W_4,W_5,W_6 and W_7)being confined brine aquifers.At present,the main mining target concentrates on phreatic brine aquifer which is shallow buried and easily mined,and elastic yield in part of confined aquifer.With expanding production scale and increasing annual yield for brine in the mining area,some area will face difficulty in mining the deep confined aquifers with poor water.But confined brine layers often occur in relatively tight salt crystallization layers or pore or solution cracks of detrital layers.Their hydrological parameters are lower than that of phreatic brine aquifer(W_1),which causes much difficulty in mining the deep potassium-rich brine.In this study,a large-scale pumping test was carried out in the deep confined aquifer in different hydrogeological areas of the Luobei depression by using blasting method and atmospheric connection method.The reasonable and economic mining method was determined for deep confined brine in different hydrogeological areas,and the deep confined brine(W_2,W_3,W_4)resources have been effectively mined.This method turned unrecoverable deep confined potassium-rich brines into available resources,improving utilization rate of deep confined potassium-rich brine.
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