音频大地电磁法在孔雀河流域地下水矿化度评价中的探索  

The disscusion of audio magnetotelluric method in the evaluation of groundwater salinity in Kongque river basin of Xinjiang

作　　者：蒋忠祥 赵长军 艾斯卡尔·吐尔逊 唐小平[3] JIANG Zhongxiang;ZHAO Changjun;Aisikaer Tuerxun;TANG Xiaoping(Geophysical and Geochemical Exploration Team of Xinjiang Geological and Mineral Bureau,Changji 831100,China;No.1 Bureau of China Metallurgical Geology Bureau City Safety and Underground Space Research Institute Limited,Langfang 065201,China;Xi'an Center of Geological Survey,Chinese Geological Survey,Xi'an 710054,China)

机构地区：[1]新疆维吾尔自治地质矿产勘查开局地球物理化学探矿大队,昌吉831100 [2]中冶一局地市安全与地下空间研究院有限公司,廊坊0650201 [3]中国地质调查局西安地质调查中心,西安710054

出　　处：《物探化探计算技术》2023年第4期514-522,共9页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国地质调查局调查项目(DD20190351)。

摘　　要：传统的地下水水质评价方法,是通过对地下水进行取样测试分析来确定含水岩组中水的矿化度,在开展大面积的地下水资源评价工作时,需要大量、系统的水样化验资料。这里以新疆库尔勒地区孔雀河流域地下水为研究对象,利用音频大地电磁测深得到的电阻率值,引入地层岩性、孔隙度、地温梯度等影响地层电阻率的重要参数,探索建立了估算地下水矿化度方法,并由此概略性地划分了孔雀河流域地下水水质。研究结果表明,利用音频大地电磁法来推算深层地下水矿化度具备可行性,相对于传统方法具有快速、高效的优点。The traditional method of groundwater quality assessment is to determine the water salinity in the water-bearing rock group by analyzing the sampling test of groundwater.When large-scale groundwater resource evaluation is carried out,a large number of systematic water sample testing data are needed.This paper takes the groundwater of the Kongquehe River Basin in the Korla region of Xinjiang as the research object.Based on the resistivity value obtained by audio magnetotelluric sounding,the paper introduces the formation lithology,porosity,geothermal gradient,and other important parameters that affect the formation resistivity to explore and establish a method to estimate the salinity of groundwater and thus roughly divides the groundwater quality of Kongquehe River basin.The results show that it is feasible to use the audio frequency magnetotelluric method to calculate the salinity of deep groundwater,and it has the characteristics of rapid and efficiency compared with the traditional method.

关 键 词：音频大地电磁法 电阻率 矿化度 地下水 孔雀河流域 

分 类 号：P631.3[天文地球—地质矿产勘探]