A Hydraulic Hammer Corer Utilizing Hydrostatic Energy for Hard Seafloor Sediment Coring
The paper presents the design and preliminary test results of a corer used for hard seafloor sediments sampling. Generally the sediment cores are provided by either gravity-type coting or deep-ocean drilling for a range of studies. However, in consideration of the operability and available sample le...
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| Veröffentlicht in: | China ocean engineering 2011-01, Vol.25 (2), p.339-348 |
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| container_title | China ocean engineering |
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| creator | 王建军 秦华伟 陈鹰 魏双丰 |
| description | The paper presents the design and preliminary test results of a corer used for hard seafloor sediments sampling. Generally the sediment cores are provided by either gravity-type coting or deep-ocean drilling for a range of studies. However, in consideration of the operability and available sample length in collecting hard sediments, these methods exhibit no advantages. In this paper, a new corer which can exploit both hydrostatic energy and gravity energy for hard sediments coting is presented. The hydrostatic energy is provided by pressure differential between ambient seawater pressure and air pressure in an empty cavity. During sampling process, the corer penetrates into the sediment like a gravity corer and then automatically shifts to the percussion mode. The experiments in the laboratory indicate that the corer can complete 40 cycles in the sea with a cycle time of 2.8 seconds in percussion mode and impact the sample tube with the velocity of 0.2 m/s during each cycle. Besides, its adjustable falling velocity can make the corer achieve the maximum efficiency in coring different sediments. |
| doi_str_mv | 10.1007/s13344-011-0028-3 |
| format | Article |
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Generally the sediment cores are provided by either gravity-type coting or deep-ocean drilling for a range of studies. However, in consideration of the operability and available sample length in collecting hard sediments, these methods exhibit no advantages. In this paper, a new corer which can exploit both hydrostatic energy and gravity energy for hard sediments coting is presented. The hydrostatic energy is provided by pressure differential between ambient seawater pressure and air pressure in an empty cavity. During sampling process, the corer penetrates into the sediment like a gravity corer and then automatically shifts to the percussion mode. The experiments in the laboratory indicate that the corer can complete 40 cycles in the sea with a cycle time of 2.8 seconds in percussion mode and impact the sample tube with the velocity of 0.2 m/s during each cycle. Besides, its adjustable falling velocity can make the corer achieve the maximum efficiency in coring different sediments.</description><identifier>ISSN: 0890-5487</identifier><identifier>EISSN: 2191-8945</identifier><identifier>DOI: 10.1007/s13344-011-0028-3</identifier><language>eng</language><publisher>Heidelberg: Chinese Ocean Engineering Society</publisher><subject>Adjustable ; Coastal Sciences ; Coring ; Engineering ; Fluid- and Aerodynamics ; Gravitation ; Hydrostatics ; Marine ; Marine & Freshwater Sciences ; Numerical and Computational Physics ; Oceanography ; Offshore Engineering ; Percussion ; Sampling ; Sea beds ; Sediments ; Simulation ; Technical Notes ; 取心 ; 取样器 ; 沉积物岩心 ; 海底沉积物 ; 液压 ; 能源 ; 锤式 ; 静水</subject><ispartof>China ocean engineering, 2011-01, Vol.25 (2), p.339-348</ispartof><rights>Chinese Ocean Engineering Society and Springer-Verlag Berlin Heidelberg 2011</rights><rights>Copyright © Wanfang Data Co. Ltd. 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Generally the sediment cores are provided by either gravity-type coting or deep-ocean drilling for a range of studies. However, in consideration of the operability and available sample length in collecting hard sediments, these methods exhibit no advantages. In this paper, a new corer which can exploit both hydrostatic energy and gravity energy for hard sediments coting is presented. The hydrostatic energy is provided by pressure differential between ambient seawater pressure and air pressure in an empty cavity. During sampling process, the corer penetrates into the sediment like a gravity corer and then automatically shifts to the percussion mode. The experiments in the laboratory indicate that the corer can complete 40 cycles in the sea with a cycle time of 2.8 seconds in percussion mode and impact the sample tube with the velocity of 0.2 m/s during each cycle. Besides, its adjustable falling velocity can make the corer achieve the maximum efficiency in coring different sediments.</description><subject>Adjustable</subject><subject>Coastal Sciences</subject><subject>Coring</subject><subject>Engineering</subject><subject>Fluid- and Aerodynamics</subject><subject>Gravitation</subject><subject>Hydrostatics</subject><subject>Marine</subject><subject>Marine & Freshwater Sciences</subject><subject>Numerical and Computational Physics</subject><subject>Oceanography</subject><subject>Offshore Engineering</subject><subject>Percussion</subject><subject>Sampling</subject><subject>Sea beds</subject><subject>Sediments</subject><subject>Simulation</subject><subject>Technical Notes</subject><subject>取心</subject><subject>取样器</subject><subject>沉积物岩心</subject><subject>海底沉积物</subject><subject>液压</subject><subject>能源</subject><subject>锤式</subject><subject>静水</subject><issn>0890-5487</issn><issn>2191-8945</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kLtOwzAUhi0EEqXwAGxhQgwBH18Se0QVUCQkhlIxWm5ykqbKpdipUPv0OATBxnIsS993Lj8hl0BvgdL0zgPnQsQUIKaUqZgfkQkDDbHSQh6TCVWaxlKo9JSceb-hVIIUMCHv99F8nzu7q6ssmtumQRfNOhfqsq_q6lC15TfQ-d72AXlo0ZX7qOhcoF0eLdAWdRd-C8yrBtt-sIN0Tk4KW3u8-HmnZPn48Dabxy-vT8-z-5c444r2cWETka9QphnHXHNpuWYisVKjBAEsxaRYYcIoYGZtuEEyRSnXmU3SHISVfEpuxr6fti1sW5pNt3NtmGgO5XpfZgaDDDQUHtjrkd267mOHvjdN5TOsa9tit_NGac5SBXogYSSzcLh3WJitqxrr9gaoGfI2Y94m9DZD3mZw2Oj47RAAur9V_pOufgatu7b8CN7vJJ5qlWjG-BePG40X</recordid><startdate>20110101</startdate><enddate>20110101</enddate><creator>王建军 秦华伟 陈鹰 魏双丰</creator><general>Chinese Ocean Engineering Society</general><general>The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China%The Institute of Mechatronic Engineering, Hangzhou Dianzi University,Hangzhou 310018, China%The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China</general><general>The Institute of Mechatronic Engineering, Hangzhou Dianzi University,Hangzhou 310018, China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W94</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20110101</creationdate><title>A Hydraulic Hammer Corer Utilizing Hydrostatic Energy for Hard Seafloor Sediment Coring</title><author>王建军 秦华伟 陈鹰 魏双丰</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-fa64dbe57c3ed935a39246a59e514127e6fbe6201ecaa0895280039ca67d14a53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Adjustable</topic><topic>Coastal Sciences</topic><topic>Coring</topic><topic>Engineering</topic><topic>Fluid- and Aerodynamics</topic><topic>Gravitation</topic><topic>Hydrostatics</topic><topic>Marine</topic><topic>Marine & Freshwater Sciences</topic><topic>Numerical and Computational Physics</topic><topic>Oceanography</topic><topic>Offshore Engineering</topic><topic>Percussion</topic><topic>Sampling</topic><topic>Sea beds</topic><topic>Sediments</topic><topic>Simulation</topic><topic>Technical Notes</topic><topic>取心</topic><topic>取样器</topic><topic>沉积物岩心</topic><topic>海底沉积物</topic><topic>液压</topic><topic>能源</topic><topic>锤式</topic><topic>静水</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>王建军 秦华伟 陈鹰 魏双丰</creatorcontrib><collection>维普_期刊</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>维普中文期刊数据库</collection><collection>中文科技期刊数据库-自然科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Wanfang Data Journals - 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Generally the sediment cores are provided by either gravity-type coting or deep-ocean drilling for a range of studies. However, in consideration of the operability and available sample length in collecting hard sediments, these methods exhibit no advantages. In this paper, a new corer which can exploit both hydrostatic energy and gravity energy for hard sediments coting is presented. The hydrostatic energy is provided by pressure differential between ambient seawater pressure and air pressure in an empty cavity. During sampling process, the corer penetrates into the sediment like a gravity corer and then automatically shifts to the percussion mode. The experiments in the laboratory indicate that the corer can complete 40 cycles in the sea with a cycle time of 2.8 seconds in percussion mode and impact the sample tube with the velocity of 0.2 m/s during each cycle. 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| identifier | ISSN: 0890-5487 |
| ispartof | China ocean engineering, 2011-01, Vol.25 (2), p.339-348 |
| issn | 0890-5487 2191-8945 |
| language | eng |
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| source | Alma/SFX Local Collection |
| subjects | Adjustable Coastal Sciences Coring Engineering Fluid- and Aerodynamics Gravitation Hydrostatics Marine Marine & Freshwater Sciences Numerical and Computational Physics Oceanography Offshore Engineering Percussion Sampling Sea beds Sediments Simulation Technical Notes 取心 取样器 沉积物岩心 海底沉积物 液压 能源 锤式 静水 |
| title | A Hydraulic Hammer Corer Utilizing Hydrostatic Energy for Hard Seafloor Sediment Coring |
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