| 海底麻坑内外土体物理力学特性差异研究 |
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| 引用本文： | 何旭涛,张秀峰,舒琪,李世强,宋湦,彭维龙.海底麻坑内外土体物理力学特性差异研究[J].海洋科学,2020,44(2):131-137. |
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| 作者姓名： | 何旭涛 张秀峰 舒琪 李世强 宋湦 彭维龙 |
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| 作者单位： | 国网浙江省电力有限公司舟山供电公司, 浙江 舟山 316021,国网浙江省电力有限公司舟山供电公司, 浙江 舟山 316021,国网浙江省电力有限公司舟山供电公司, 浙江 舟山 316021,国网浙江省电力有限公司舟山供电公司, 浙江 舟山 316021,自然资源部第二海洋研究所, 浙江 杭州 310012,国网浙江省电力有限公司舟山供电公司, 浙江 舟山 316021 |
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| 基金项目： | 浙江省电力有限公司基金资助项目（5211ZS16000C）；国家自然科学基金项目（5167090521）；中央级公益性科研院所基本科研业务费专项资金项目（SZ1919） |
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| 摘 要： | 为了研究海底麻坑内外土体物理力学特性的差异,以杭州湾口外软土海底发现的大型麻坑为研究对象,分别在麻坑内外进行了4站15m孔压静力触探(CPTU)测试、2口钻孔共48个柱状样样品的常规土工试验,结果表明麻坑内土体相较麻坑外土体抗剪强度高、压缩模量大,饱和度、孔隙率和含水量低,而浅层气在海底土体中的赋存形式是造成这种差异的主要原因。
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| 关 键 词： | 孔压静力触探(CPTU) 海底麻坑 土力学 |
| 收稿时间： | 2019/4/15 0:00:00 |
| 修稿时间： | 2019/6/3 0:00:00 |
Study on the differences in physical and mechanical properties of soil inside and outside a seabed pockmark |
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| HE Xu-tao,ZHANG Xiu-feng,SHU Qi,LI Shi-qiang,SONG Sheng and PENG Wei-long.Study on the differences in physical and mechanical properties of soil inside and outside a seabed pockmark[J].Marine Sciences,2020,44(2):131-137. |
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| Authors: | HE Xu-tao ZHANG Xiu-feng SHU Qi LI Shi-qiang SONG Sheng and PENG Wei-long |
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| Institution: | Zhoushan Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhoushan 316021, China,Zhoushan Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhoushan 316021, China,Zhoushan Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhoushan 316021, China,Zhoushan Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhoushan 316021, China,Second Institute of Oceanography, Ministry of Natural Resources of the People''s Republic of China, Hangzhou 310012, China and Zhoushan Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhoushan 316021, China |
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| Abstract: | To analyze the differences in the physical and mechanical properties of soil inside and outside a pockmark, a 15-m pore pressure cone penetration test at four stations and the borehole column geotechnical test at two stations were conducted. The results showed that the soil phase in the pockmark had a higher shear strength, higher compressive modulus, lower saturation, porosity, and lower water content than those outside the pockmark. The occurrence of shallow gas in the subsea soil was the main reason for this difference. |
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| Keywords: | pore pressure cone penetration (CPTU) seabed pockmark soil mechanics |
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