Article(id=1242132082013581556, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1242132062942077861, articleNumber=null, orderNo=11, doi=10.3981/j.issn.1000-7857.2014.16.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1378742400000, receivedDateStr=2013-09-10, revisedDate=1397145600000, revisedDateStr=2014-04-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1402718363390, onlineDateStr=2014-06-14, pubDate=1402156800000, pubDateStr=2014-06-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1402718363390, onlineIssueDateStr=2014-06-14, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774076966046, creator=sys-migrate, updateTime=1774076966046, updator=sys-migrate, issue=Issue{id=1242132062942077861, tenantId=1146029695717560320, journalId=1146031591421210625, year='2014', volume='32', issue='16', pageStart='1', pageEnd='95', issueExtLink='null', onlineDate='null', pubDate='1402156800000', pubDateStr='2014-06-08', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=3, issueType=-1, specialIssue=null, createTime=1774076961500, creator='sys-migrate', updateTime=1774076961500, updator='sys-migrate', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=54, endPage=57, ext={EN=ArticleExt(id=1242132088078545171, articleId=1242132082013581556, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=The Hole Shape under Horizontal Directional Drilling Crossing, columnId=1242116080374710456, journalTitle=Science & Technology Review, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=Based on the geotechnical failure criteria of the equivalent plastic strain and the geotechnical elastic-plastic constitutive relation, the random collision under gravity and the geotechnical interaction are considered to establish a nonlinear dynamics model of the interaction between the reamer and the geotechnical body, which is used in the finite element method. The horizontal directional drilling construction process is simulated when the reamer operates. The reamer produces a settlement in its operation, the settlement of the reamer increases with the construction time, the speed in the vertical direction changes in a range of -380~320 mm/s. The sedimentation rate increases with the reamer's drilling speed. The actual cross-section of the perforations is pear-shaped, as is the case in engineering examples., authors=AI Zhijiu¹, XIAN Yong¹, XIA Huan², JIAO Ruyi², JIANG Yong², authorsList=AI Zhijiu, XIAN Yong, XIA Huan, JIAO Ruyi, JIANG Yong, authorCompany=1. School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China;
2. Research Institute of Science and Technology of China Petroleum and Natural Gas Pipeline, Langfang 065000, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=PWrBFr1/RGo/j4l7jcFb4Q==, pdfFileSize=3709624, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242132085394190604, articleId=1242132082013581556, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=水平定向钻穿越扩孔器动态变化及其对扩孔形状的影响, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=基于等效塑性应变的岩土破坏准则和岩土弹塑性本构关系，考虑扩孔器在施工过程中与岩土的接触碰撞问题，采用有限单元法建立扩孔器与岩土相互作用系统非线性动力学模型，对水平定向钻穿越扩孔施工过程进行数值模拟，研究了扩孔器的动态变化规律及其对扩孔形状的影响。结果表明，在扩孔过程中，扩孔器会产生沉降，沉降量与钻进速度和扩孔时间有关，钻进速度越大扩孔器沉降量越大，扩孔时间越长扩孔器沉降量越大；同时，扩孔器在竖直方向会产生振动，振动速度的变化范围为-380~320 mm/s。受扩孔器沉降等因素的影响，模拟得到的扩孔截面形状为上窄下宽的长圆形，与工程实例的扩孔形状吻合。, authors=艾志久¹, 鲜勇¹, 夏换², 焦如义², 江勇², authorsList=艾志久, 鲜勇, 夏换, 焦如义, 江勇, authorCompany=1. 西南石油大学机电工程学院, 成都610500;
2. 中国石油天然气管道科学研究院, 廊坊065000, correspAuthors=null, authorNote=艾志久，教授，研究方向为石油天然气装备及油气井安全工程，电子信箱：aizhijiu123@vip.sina.com；鲜勇，硕士研究生，研究方向为石油天然气装备设计与制造，电子信箱：xianyong5@126.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=FGBqRVPfLms6McP9Uf7IFw==, pdfFileSize=3709624, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=中国石油天然气集团公司“十二五”科技项目（2011B-3303）)}, authors=null, keywords=[Keyword(id=1242132085079617799, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242132082013581556, language=CN, orderNo=1, keyword=扩孔器), Keyword(id=1242132085159309577, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242132082013581556, language=CN, orderNo=1, keyword=动态变化规律), 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