高密度电阻率法结合地震频率成像法在青海一里坪液体锂矿探测中的应用  

Application of high-density resistivity method combined with seismic frequency imaging method in the exploration of lithium deposit in Yiliping salt lake brine,Qinghai province

作　　者：侯昭飞 罗志波 赵勇 唐发满 杨伟建 严强 王坤 杨佺忠 赵福垚 Hou Zhaofei;Luo Zhibo;Zhao Yong;Tang Faman;Yang Weijian;Yan Qiang;Wang Kun;Yang Quanzhong;Zhao Fuyao(Minmetals Salt Lake Co.,Ltd.,Golmud Qinghai 816000,China;Shanghai Lrel Instrument Co.,Ltd.,Shanghai 200435,China;Department of Biomedical Engineering,Changzhi Medical College,Changzhi Shanxi 046000,China)

机构地区：[1]五矿盐湖有限公司,青海格尔木816000 [2]上海劳瑞仪器设备有限公司,上海200435 [3]长治医学院生物医学工程系,山西长治046000

出　　处：《化工矿物与加工》2023年第5期13-17,23,共6页Industrial Minerals & Processing

基　　金：国家重点研发计划项目(2018YFC0604800);长治医学院博士科研启动基金项目(BS202026)。

摘　　要：青海一里坪盐湖赋存丰富的液体锂矿(晶间卤水),富卤水层地质构造复杂,需通过小范围勘探为矿区液体锂矿储量调查提供依据。高密度电阻率法适用于判断地下卤水与淡水,地震频率成像法可提供地下矿层的岩性特征。为兼顾成本与效率,联合两种方法对一里坪盐湖液体锂矿进行勘查,结果表明:根据地震频率成像法的反演图像可以明确研究区域的富水区和贫水区,进而推测卤水水位变化规律,获得岩体的破碎和节理发育特征;高密度电阻率法的外接电压取24~36 V为宜,富水层视电阻率为1~3Ω·m,贫水层视电阻率大于5Ω·m,基岩处的视电阻率在50Ω·m左右。在合理选取设备和工作参数的前提下,高密度电阻率法与地震频率成像法在卤水探测中的联合应用可以取得较好的效果。There is abundant liquid lithium deposit(inter-cryatalline brine)in Yiliping salt lake,Qinghai province.Because of the complex stratigraphic structure of brine-rich layer,small scale survey work is required to be done to provide basic information for exploration of the whole reserve in the area.The high-density resistivity method is applicable to distinguish brine from fresh water.The seismic frequency imaging method can be applied to provide lithologic characters of underground ore beds.For high working efficiency and its low cost,the two methods were used for survey of the lithium brine deposit in Yiliping salt lake,Qinghai province.It showed that the related inversion images can clearly represent the water-rich area or the water-poor area,and probably reflect the variation of brine level.The characteristics of fracture and joint development of rock mass are obtained.The appropriate external voltage of the high density resistivity method was 24~36 V,the apparent resistivity of the water-rich layer was 1~3Ω·m,the apparent resistivity of the water-poor layer was greater than 5Ω·m,and the apparent resistivity of the bedrock was about 50Ω·m.Under the premise of reasonable selection of equipment and operating parameters,better results can be achieved in the combined application of high density resistivity method and seismic frequency imaging method in brine detection.

关 键 词：高密度电阻率法 地震频率成像法 盐湖锂矿 卤水 勘探 

分 类 号：P631[天文地球—地质矿产勘探]