Geophysical exploration of karst development characteristics in bridge site of the alpine gorge area
LU Ze-Feng1,2
1. Nonferrous Metal East China Geological Exploration Bureau of Jiangsu Province,Nanjing 210007,China 2. Nanjing Survey Engineering Co., Ltd.,Nanjing 210007,China
Karst development characteristics such as depth, fillings and distribution direction are key questions during geophysical survey of bridge site in Alpine gorge area. Satisfactory information of geophysical survey is not available due to influences of weathering,rock,groundwater and topography.In order to improve efficiency of geophysical exploration, shallow seismic method, audio frequency magnetotelluric method and symmetric four-pole sounding method are used for raising geophysical exploration efficiency. As a result, exploration accuracy is improved in turn, and content of exploration is verified by each other. Characteristics of apparent, macroscopic and microcosmic Karst development are obtained.Method of geophysical comprehensive exploration mentioned above can provide reference for similar projects.
陆泽峰. 高山峡谷地区桥址区岩溶发育特征地球物理勘察[J]. 物探与化探, 2021, 45(1): 252-256.
LU Ze-Feng. Geophysical exploration of karst development characteristics in bridge site of the alpine gorge area. Geophysical and Geochemical Exploration, 2021, 45(1): 252-256.
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