多种物探方法在“红层”找水中的应用  

Application of various geophysical prospecting method in red beds water exploration

作　　者：李维 唐彩瑞[4] 魏良帅 舒勤峰 陶俊利 田银川 陈彩玲 罗兵 LI Wei;TANG Cairui;WEI Liangshuai;SHU Qinfeng;TAO Junli;TIAN Yinchuan;CHEN Cailing;LUO Bing(Sichuan Hua Di Building Engineering Co. Ltd, Chengdu 610081, China;Institute of Exploration Technology, Chinese Academy of Geological Sciences, Chengdu 611734, China;Chengdu Center of Hydrogeology and Engineering Geology of Sichuan Provincial Geology and Mineral Resources Bureau, Chengdu 610081, China;Sichuan Huadi Exploration Co., Ltd, Chengdu 610200, China)

机构地区：[1]四川省华地建设工程有限责任公司,成都610081 [2]中国地质科学院探矿工艺研究所,成都611734 [3]四川省地质矿产勘查开发局成都水文地质工程地质中心,成都610081 [4]四川华地勘探股份有限公司,成都610200

出　　处：《物探化探计算技术》2022年第3期353-360,共8页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：四川省科学技术厅2020年省级科技计划项目(2020ZHCG0023);中国地质调查局嘉陵江流域水文地质调查项目(DD20190325)。

摘　　要：“红层”在地质学上多指在侏罗纪—白垩纪时期形成的陆相砂泥岩地层,在风化作用的影响下,“红层”岩层裂隙不发育,地下水不易储存,地下水资源匮乏。在“红层”地区找水,以往主要采用的是高密度电法、激电测深、综合测井等物探方法,而上述的方法都具有一定的局限性,如何充分地利用多种物探方法解决“红层”找水问题成为关键。通过三种方法与含水层之间的关系,结合抽水试验数据,研究表明在“红层”地区利用高密度电阻率法和激电测深法两种方法结合勘查地下水资源是有效可行的;结合不同含水条件下的物性参数差异,确定了本工区的含水层的多种物探方法物性参数之间的关系。这里通过研究物探方法与含水层之间的关系,提出针对本区块“红层”地区找水物探方法系列的优化方案,给“红层”地区找水提供一定的参考价值。Geologically,the red beds refers to the continental sand and mudstone formation formed in the Jurassic-Cretaceous period.Under the influence of weathering,the fissures of the red beds rock layer are not developed'and the groundwater is not easy to store,so that the groundwater resources are scarce.In order to find water in the red bed area,geophysical prospecting methods such as multi-electrode resistivity method,sounding of induced polarization(IP)method and well logging are mainly used.All of the above methods have certain limitations,so how to make full use of various geophysical methods to solve the problem of red bed water exploration is a key issue.In this paper,through the relationship between the three methods and the aquifer,combined with the pumping test data,it is effective and feasible to use the combination of multi-electrode resistivity method and IP method to explore groundwater resources in the red bed area.Combined with the difference of physical parameters under different water bearing conditions,the relationship between physical parameters of various geophysical exploration methods of aquifer in this work area is determined.By studying the relationship between geophysical methods and aquifer,we put forward the optimization scheme of geophysical methods for water exploration in the red bed area of this block in this paper,which provides a certain reference value for water exploration in the red bed area.

关 键 词：红层地区 高密度电法 激电测深 综合测井 抽水试验 

分 类 号：P631[天文地球—地质矿产勘探]