Abstract
To carry out seabed engineering geological survey is one of the important technical measures to ensure the safety of submarine electric transmission lines. Firstly, the characteristics, principles and application scope of several kinds of geotechnical engineering survey techniques were analyzed. On this basis, a comprehensive survey technique for seabed engineering geology is proposed. By applying the comprehensive survey technology to the engineering geological survey of the submarine transmission line routing area in a certain sea area, the engineering geological characteristics of the area and the unfavorable geology and obstacles affecting the line safety are found out, which provides technical guidance for ensuring the transmission line safety. The rationality and applicability of the comprehensive survey technology are verified by practical examples, which can provide reference for other submarine geotechnical engineering survey and promote the development of marine survey technology in China.
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