摘要
地下水调查是草原水资源合理开发利用的前提,而探明水文地质结构对地下水调查尤为重要。笔者充分利用大地电磁法(MT)和地面核磁共振(SNMR)各自的优点,尝试采用MT和SNMR对水文地质结构进行探测,并通过二维非线性共轭梯度(NLCG)反演解译了电性与地层两者的对应关系;实现了典型层状含水层模型和局部含水层模型正反演试验;通过实测数据反演与钻孔资料对比验证了该反演算法对低阻含水层地质体解译的有效性。试验结果对水文地质调查具有一定参考意义,也为同类数据反演提供了方法借鉴。
Groundwater survey is the premise of reasonable development and utilization of grassland water resources.Hence finding out the aquifer structure is of great importance for groundwater survey.This paper used magnetotelluric method(MT)to identify aquifer structure.The corresponding relationship between electrical properties and strata was interpreted by two-dimensional nonlinear conjugate gradient(NLCG)inversion.The forward and inversion experiments of typical layered aquifer model and local aquifer model were carried out,and the validity of the inversion algorithm for the interpretation of geologic body of low resistivity aquifer was verified.The results provide reference for groundwater survey and a method for similar data inversion.
作者
黄磊
侯泽明
韩萱
刘志强
苟青松
HUANG Lei;HOU Zeming;HAN Xuan;LIU Zhiqiang;GOU Qingsong(Water Conservancy and Civil Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia,China;Inner Mongolia Key Laboratory of Water Resources Protection and Utilization, Hohhot 010018, Inner Mongolia,China;Chongqing Institute of Geology and Mineral Resources, Chongqing 401120,China)
出处
《西北地质》
CAS
CSCD
北大核心
2022年第1期249-254,共6页
Northwestern Geology
基金
国家自然科学基金项目“露天采煤驱动下白垩系煤系地层结构变异与地下水系统时空演变机理”(51969023)
内蒙古自治区科技计划项目“采煤驱动下西部典型矿区地质环境治理与生态修复关键技术研究与示范”(2020GG0076)
“内蒙古饮用地下水量质安全保障支撑技术研究”(2019GG141)
内蒙古自治区自然科学基金“草原型浅层地下水系统高效精准辨识方法与补排机制的源解析”(2018MS05005)
内蒙古农业大学高层次人才科研启动项目(NDYB2018-60)。
关键词
大地电磁法
非线性共轭梯度法
含水层结构辨识
反演
magnetotelluric method
nonlinear conjugate gradient method
aquifer structure identification
inversion
