基于测氡-磁法探测四川茂县吉鱼沟隐伏断裂  

Detection of hidden fractures in Jiyugou,Mao County,Sichuan based on radon and magnetic methods

作　　者：田梦莎 柯斌 TIAN Meng-sha;KE Bin(Sichuan institute of environmental policy research and planning,Chengdu,Sichuan 610041,China;Southwest survey and design institute of nuclear industry,Chengdu,Sichuan 610065,China)

机构地区：[1]四川省环境政策研究与规划院,四川成都610041 [2]核工业西南勘察设计研究院有限公司,四川成都610065

出　　处：《地下水》2024年第1期136-138,共3页Ground water

摘　　要：吉鱼沟位于四川茂县石鼓乡吉鱼村岷江右岸,有隐伏断裂存在的可能性。为合理开发利用吉鱼沟地热资源,查找存在的隐伏断裂,利用氡气测量和瞬变电磁法对吉鱼沟隐伏构造进行探测,通过测量分析得出:土壤RaA测量圈定3处RaA异常区,地面瞬变电磁法(TEM)测出断裂破碎带引起的深部异常,证明吉鱼沟沟口处具备地热水形成的构造环境。综合两种物探方法探测隐伏断裂,优势互补,确认和解释地热发育的构造环境,可为合理开发地热资源提供科学依据。The Jiyu ditch is located on the right bank of the Minjiang River in Jiyu Village,Shigu Township,Mao County,Sichuan Province,with the possibility of the existence of a concealed fracture.In order to rationally develop and utilise the geothermal resources of JiYu ditch and to find out the existence of hidden fractures,radon gas measurement and transient electromagnetic method were used to detect the hidden structure of JiYu ditch,derived from analysis of measurements:Soil RaA measurements circled three RaA anomalies,and ground transient electromagnetic method(TEM)measured deep anomalies caused by fracture and fragmentation zones,which proved that the tectonic environment of geothermal water formation is available at the mouth of JiYu ditch.Combining the two physical exploration methods to detect the hidden fracture and complement each other's advantages,confirming and interpreting the tectonic environment of geothermal development can provide a scientific basis for the rational development of geothermal resources.

关 键 词：吉鱼沟 土壤RaA测量 地面瞬变电磁法 隐伏断裂 

分 类 号：P631.325[天文地球—地质矿产勘探]