Engineering geological conditions and seabed stability assessment of Nanpu-Caofeidian, Hebei Province

Xu Yuanqin; Li Ping; Liu Lejun; Fu Mingzuo; Gao Shan

doi:10.3969/j.issn.0253-4193.2017.05.010

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Article Navigation > Haiyang Xuebao > 2017 > 39(5): 103-114

Xu Yuanqin, Li Ping, Liu Lejun, Fu Mingzuo, Gao Shan. Engineering geological conditions and seabed stability assessment of Nanpu-Caofeidian, Hebei Province[J]. Haiyang Xuebao, 2017, 39(5): 103-114. doi: 10.3969/j.issn.0253-4193.2017.05.010

Citation:

Xu Yuanqin, Li Ping, Liu Lejun, Fu Mingzuo, Gao Shan. Engineering geological conditions and seabed stability assessment of Nanpu-Caofeidian, Hebei Province[J]. Haiyang Xuebao, 2017, 39(5): 103-114. doi: 10.3969/j.issn.0253-4193.2017.05.010

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Engineering geological conditions and seabed stability assessment of Nanpu-Caofeidian, Hebei Province

doi: 10.3969/j.issn.0253-4193.2017.05.010

Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266061, China

Received Date: 2016-07-29
Rev Recd Date: 2016-11-29

Abstract

Abstract

In this paper, through the analysis of geotechnical test, sediment of the sea around Nanpu-Caofeidian is mainly composed of mud, silty sand, clay, silty soil, which account for 85% of the total number of analyzed samples. Muddy clay, silty clay, fine sand and medium sand are relatively less. According to the most prominent factor which influence the geotechnical conditions of Nanpu-Caofeidian area: submarine landform unit, potential geological hazards, combined with submarine soil type and its physical and mechanical properties, the research area can divide into four engineering geological zone, they are subaqueous slope mixed engineering geological zone(Ⅰ), erosion plain and depression sandy soil engineering geological zone(Ⅱ), erosion depression mixed engineering geological zone(Ⅲ), shelf accumulation plain fine grained soil engineering geological zone (Ⅳ) respectively. Through comprehensive analysis of the factors which influence the geotechnical conditions of sea floor by marine environment factors, seismic activity, disaster geology and soil stability, the seabed stability of the four engineering geological zones are unstable area(Ⅰ), relatively stable area (Ⅱ), relatively unstable area(Ⅲ), stable area (Ⅳ). The research results have important guiding significance for the construction and disaster prevention and reduction of the sea floor in this area.
- Nanpu-Caofeidian sea area,
- disaster geology,
- geotechnical condition,
- seabed stability assessment

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References(20)

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