Article(id=1241081038353519420, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241081025531540408, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2024.04.026, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1708963200000, receivedDateStr=2024-02-27, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773826377714, onlineDateStr=2026-03-18, pubDate=1722441600000, pubDateStr=2024-08-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773826377714, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773826377714, creator=13701087609, updateTime=1773826377714, updator=13701087609, issue=Issue{id=1241081025531540408, tenantId=1146029695717560320, journalId=1235980550691926019, year='2024', volume='44', issue='4', pageStart='1', pageEnd='258', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773826374657, creator=13701087609, updateTime=1773827517159, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241085817590960730, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241081025531540408, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241085817590960731, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1241081025531540408, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=136, endPage=143, ext={EN=ArticleExt(id=1241081040450671521, articleId=1241081038353519420, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Modeling and Analysis of Core Drilling of Marine Gas Hydrate by Seafloor Drill, columnId=1236276106018484431, journalTitle=Mining and Metallurgical Engineering, columnName=MINING, runingTitle=null, highlight=null, articleAbstract=
Aiming at obvious elastic-plastic deformation of diamond drill bits in the process of drilling marine gas hydrate, a modeling approach that is suitable for the core drilling process of drill bits was proposed based on the Hertz theory. Firstly, the rock-breaking mechanism was analyzed for marine gas hydrates from elastic deformation to elasticplastic deformation during the drilling process under sea, and the drilling pressure and cutting force of single diamond particle on the diamond bit during the drilling process were calculated. Secondly, according to the stress condition of a single diamond particle, the theoretical relationships between drilling pressure and torque on the whole bit and other drilling parameters were obtained, and a mechanical model was established for the diamond drilling bit. Finally, a relationship curve between the saturation of marine gas hydrate and the torque and drilling pressure was obtained based on analysis. An at-sea testing by adopting such method has successfully taken some samples of marine gas hydrate, which has verified the feasibility of this method. This research provides a theoretical reference for the design of drill bit parameters and optimization of efficient deep-sea core drilling operation.
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针对深海海底钻机金刚石钻头在钻进海底天然气水合物过程中有明显弹塑性变形的特点,基于Hertz接触修正理论,提出了一种适用于深海海底钻机天然气水合物钻进取芯的建模方法。首先,分析钻进过程中海底天然气水合物从弹性变形到弹塑性变形破岩机理,求得金刚石钻头在钻进过程中单颗粒金刚石受到的钻进压力和切削力;其次,根据单颗粒金刚石受力情况,得到整个钻头上钻压和扭矩与钻进参数的理论关系,从而建立金刚石取芯钻头力学模型;最后,分析得到在钻进海底天然气水合物时海底天然气水合物的饱和度与扭矩和钻压的关系曲线。以该方法进行海上试验,成功获取了海底天然气水合物样品,验证了该方法的可行性。该研究成果可为深海取芯钻机钻头参数的设计和高效率钻进取芯提供理论依据。
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吴丹(1999—),男,湖南岳阳人,硕士研究生,主要研究方向为海洋矿产资源探采装备与技术。E-mail:2842893189@qq.com
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吴丹(1999—),男,湖南岳阳人,硕士研究生,主要研究方向为海洋矿产资源探采装备与技术。E-mail:2842893189@qq.com
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“海牛号”深海海底钻机上表镶金刚石钻头, figureFileSmall=JjKP6IJjG7cWW9HoPS6xcQ==, figureFileBig=rmPmIIy7JVBmUN55cTM60w==, tableContent=null), ArticleFig(id=1241081063305433159, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241081038353519420, language=EN, label=null, caption=null, figureFileSmall=i5SUZCimYrRLY/AZJTjdXQ==, figureFileBig=JMbwImlX0S/rvefy0Ict+w==, tableContent=null), ArticleFig(id=1241081063397707848, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241081038353519420, language=CN, label=图3, caption=
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金刚石钻头受力分析(a)金刚石钻头整体受力分析;(b)单颗粒金刚石受力分析
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钻头上金刚石颗粒受力分析(a)钻进时受到的正压力;(b)钻进时受到的摩擦力;(c)转动时受到的切削力;(d)转动时受到的摩擦力
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钻进参数与钻压与扭矩的关系(a)不同饱和度下钻进速度与钻压的关系;(b)不同饱和度下钻进速度与扭矩的关系;(c)不同转速下钻进速度与钻压的关系;(d)不同转速下钻进速度与扭矩的关系
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不同海底天然气水合物饱和度与钻压和扭矩之间的关系, figureFileSmall=BxLxmcmzIQeyP9aLe+yJcg==, figureFileBig=7rpHWn//20jmogWjiXHniQ==, tableContent=null), ArticleFig(id=1241081066430189661, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241081038353519420, language=EN, label=null, caption=null, figureFileSmall=Dnvbhec5cvc22ja3yl6uhA==, figureFileBig=49ZM7C7ZPyOxKHoSZbL8zw==, tableContent=null), ArticleFig(id=1241081066497298526, tenantId=1146029695717560320, journalId=1235980550691926019, articleId=1241081038353519420, language=CN, label=图14, caption=
深海海底钻机海上试验(a)“海牛号”深海海底钻机海上作业;(b)钻机上部分取芯钻具和钻杆;(c)钻获的部分水合物样品
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| 参数 | 数值 |
|---|
| 钻头外径/mm | 96 |
| 钻头内径/mm | 62 |
| 钻头唇面倾斜角/(°) | 65 |
| 金刚石颗粒弹性模量/GPa | 1 050 |
| 金刚石颗粒泊松比 | 0.2 |
| 单颗粒金刚石半径/mm | 1 |
| 钻头底面金刚石颗粒数 | 140 |
| 钻头斜面金刚石颗粒数 | 240 |
| 钻头金刚石颗粒的排数 | 8 |
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金刚石钻头主要参数
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| 参数 | 数值 |
|---|
| 钻头外径/mm | 96 |
| 钻头内径/mm | 62 |
| 钻头唇面倾斜角/(°) | 65 |
| 金刚石颗粒弹性模量/GPa | 1 050 |
| 金刚石颗粒泊松比 | 0.2 |
| 单颗粒金刚石半径/mm | 1 |
| 钻头底面金刚石颗粒数 | 140 |
| 钻头斜面金刚石颗粒数 | 240 |
| 钻头金刚石颗粒的排数 | 8 |
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| 编号 | 水合物饱和度/% | 弹性模量/GPa | 泊松比 | 内聚力/MPa | 内摩擦角/(°) |
|---|
| 1 | 0 | 3.08 | 0.29 | 3.56 | 22.21 |
| 2 | 40 | 3.14 | 0.23 | 3.97 | 21.10 |
| 3 | 60 | 2.85 | 0.19 | 4.25 | 23.57 |
| 4 | 80 | 3.85 | 0.19 | 4.69 | 23.67 |
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海底天然气水合物沉积物的试验结果[12]
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| 编号 | 水合物饱和度/% | 弹性模量/GPa | 泊松比 | 内聚力/MPa | 内摩擦角/(°) |
|---|
| 1 | 0 | 3.08 | 0.29 | 3.56 | 22.21 |
| 2 | 40 | 3.14 | 0.23 | 3.97 | 21.10 |
| 3 | 60 | 2.85 | 0.19 | 4.25 | 23.57 |
| 4 | 80 | 3.85 | 0.19 | 4.69 | 23.67 |
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