Article(id=1242133074750812814, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1242133055423455754, articleNumber=null, orderNo=11, doi=10.3981/j.issn.1000-7857.2015.03.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1406649600000, receivedDateStr=2014-07-30, revisedDate=1409068800000, revisedDateStr=2014-08-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1425368159913, onlineDateStr=2015-03-03, pubDate=1423756800000, pubDateStr=2015-02-13, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1425368159913, onlineIssueDateStr=2015-03-03, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774077202724, creator=sys-migrate, updateTime=1774077202724, updator=sys-migrate, issue=Issue{id=1242133055423455754, tenantId=1146029695717560320, journalId=1146031591421210625, year='2015', volume='33', issue='3', pageStart='1', pageEnd='128', issueExtLink='null', onlineDate='null', pubDate='1423756800000', pubDateStr='2015-02-13', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=3, issueType=-1, specialIssue=null, createTime=1774077198126, creator='sys-migrate', updateTime=1774077198126, updator='sys-migrate', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=58, endPage=62, ext={EN=ArticleExt(id=1242133078689264292, articleId=1242133074750812814, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Gas emission law in high gas goaf of fully mechanized caving face, columnId=1242116080374710456, journalTitle=Science & Technology Review, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=In view of the characteristics of the coal seam gas storage and the conditions of the fully mechanized caving face, the numerical simulation and field measurement methods are used to study the distribution of the gas concentration in space under the condition of the U+I ventilation mode, and the relationship between the gas emission, the coal production and the periodic weighting is analyzed. The results of the numerical simulation show that the U+I ventilation mode can effectively reduce the gas concentration in the upper corner and the return airway. With the working face advancing, the gas enrichment zone is constantly expanded in the goaf back. And the gas concentration rises in the back of the return air side. Therefore, it is suitable to bury the pipe in the return air side of the goaf back. The results of field measurements show that the gas concentration distributes gently from the inlet side to the middle of mining faces, increasing faster in the range of 50 meters near the return air side. The absolute outflows of the gas and coal productions are in an approximate linear relationship, and the gas emission sees periodic changes after first weighting. A comparison study shows that the results of the distribution of the gas concentration obtained from the numerical simulation and the field measurements agree very well. At the same time it is feasible to bury the pipe in the return air side of the goaf back to drain the high concentration gas, and it can significantly reduce the gas emission., authors=ZHANG Tianjun¹, LI Wei², LI Shugang², SONG Shuang², TANG Feng³, authorsList=ZHANG Tianjun, LI Wei, LI Shugang, SONG Shuang, TANG Feng, authorCompany=1. School of Sciences, Xi'an University of Science and Technology, Xi'an 710054, China;
2. School of Energy, Xi'an University of Science and Technology, Xi'an 710054, China;
3. No. 66427 Troop, Chinese People's Liberation Army, Beijing 100042, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=XPvJrsTrgGfSiMfQzKoztw==, pdfFileSize=2795419, 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=1242133077489693334, articleId=1242133074750812814, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=高瓦斯综放工作面采空区瓦斯涌出规律, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=针对山西某矿煤层瓦斯赋存特点及高瓦斯综放工作面开采条件,采用数值模拟和现场实测相结合的方法,研究了U+I 型通风采空区瓦斯流场以及瓦斯运移规律,分析了瓦斯涌出与产煤量和周期来压的关系。数值模拟结果表明;U+I 型通风可以有效降低回风巷和上隅角瓦斯体积分数;随着工作面推进,采空区后方形成的瓦斯富集带会不断扩大,回风侧后方瓦斯体积分数升高。现场实测结果表明:进风侧至工作面中部瓦斯体积分数变化幅度较小,靠近回风侧50 m 范围内瓦斯体积分数增加较快;绝对瓦斯涌出量与产煤量成近似线性关系,顶板初次来压后瓦斯涌出呈现周期性变化,经对比研究,数值模拟得到的瓦斯体积分数分布规律与现场实测结果相吻合;在采空区后方回风侧附近采用埋管抽放高浓度瓦斯是可行的,可以大量减少瓦斯涌出。, authors=张天军¹, 李伟², 李树刚², 宋爽², 汤峰³, authorsList=张天军, 李伟, 李树刚, 宋爽, 汤峰, authorCompany=1. 西安科技大学理学院, 西安710054;
2. 西安科技大学能源学院, 西安710054;
3. 中国人民解放军66427部队, 北京100042, correspAuthors=null, authorNote=张天军,教授,研究方向为力学与安全,电子信箱:tianjun_zhang@126.com, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=o0zBmPxjDCNHXq5fh9OsMQ==, pdfFileSize=2795419, 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=国家自然科学基金项目(51374168,51174157,51174158))}, authors=[Author(id=1281154722157531805, tenantId=1146029695717560320, journalId=null, articleId=1242133074750812814, orderNo=null, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=null, email=null, emailSecond=null, emailThird=null, correspondingAuthor=null, authorType=null, ext={EN=AuthorExt(id=null, tenantId=null, journalId=1146031591421210625, 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