三峡库区隐伏岩溶特性的地球物理探测  

Features of Covered Karst Disclosed by Geophysical Exploration in Three-Gorge Reservoir Region

作　　者：张加桂[1] 陈宝荪 殷跃平[3] 李洪涛[2] 孙党生[2] 曹福祥[2] 

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]中国地质科学院水文地质环境地质研究所,河北保定071051 [3]中国地质环境监测院,北京100081

出　　处：《工程勘察》2003年第1期64-66,共3页Geotechnical Investigation & Surveying

基　　金：三峡移民开发局基金项目 (970 7;990 4 )

摘　　要：三峡库区隐伏岩溶问题是近期发现的重大工程地质问题。利用电法EH 4、地震面波、浅震、地震CT等方法对隐伏岩溶进行探测 ,得出隐伏岩溶在中三叠统巴东组 (T2 b)泥灰岩中普遍存在 ,具有由浅至深由强变弱的分层性和局部不均匀性 ,并与地貌和地下水具有密切关系。The covered karst is the great important engineering geologic problem recently discovered in Three Gorge Reservoir region.Through the explorations by EH\|4 electric survey, seismic surface wave sounding,shallow seismic sounding(CDP)and seismic topography(CT) it is found that the covered karst exists widely in argillious limestone of Badong formation of middle Triassic(T 2b).Essentials of dominant option and collocation,profile layout and reasonable interpretation in geophysical exploration are put forward for the covered karst.

关 键 词：三峡库区 地球物理探测 隐伏岩溶 

分 类 号：P642.25[天文地球—工程地质学] P631[天文地球—地质矿产勘探]