Collapse analysis of tunnel floor in karst area based on Hoek-Brown rock media
Collapse shape of tunnel floor in Hoek-Brown rock media is investigated with the functional catastrophe theory. Thestability of rock system in tunnel floor, which is determined by thickness, half collapse width, half length of cave and detaching curve, has great secure and economic significance in p...
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| Veröffentlicht in: | Journal of Central South University 2017-04, Vol.24 (4), p.957-966 |
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| container_title | Journal of Central South University |
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| creator | 杨小礼 李正伟 刘拯安 肖海波 |
| description | Collapse shape of tunnel floor in Hoek-Brown rock media is investigated with the functional catastrophe theory. Thestability of rock system in tunnel floor, which is determined by thickness, half collapse width, half length of cave and detaching curve, has great secure and economic significance in practical engineering. To investigate the failure mechanisms and the outline of detaching block, a reliable damage model is presumed by making reference to the limit analysis theory. The analytical solutions of detaching curve, half collapse width on tunnel floor and the critical and maximum values of collapse thickness are derived based on Hoek-Brown criterion and functional catastrophe theory. The result shows that 0.5 is a most probable condition for instability, and the shape of detaching curve is a part of parabola. It is reasonable by comparing with previous theory and analogous experiments. The effects of major factors on thickness and half collapse width are further discussed. Numerical calculations and parametric analysis are carried out to illustrate the effects of different parameters on the mechanism, which is significant to the stability analysis of tunnel floor in rock media. |
| doi_str_mv | 10.1007/s11771-017-3498-5 |
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Thestability of rock system in tunnel floor, which is determined by thickness, half collapse width, half length of cave and detaching curve, has great secure and economic significance in practical engineering. To investigate the failure mechanisms and the outline of detaching block, a reliable damage model is presumed by making reference to the limit analysis theory. The analytical solutions of detaching curve, half collapse width on tunnel floor and the critical and maximum values of collapse thickness are derived based on Hoek-Brown criterion and functional catastrophe theory. The result shows that 0.5 is a most probable condition for instability, and the shape of detaching curve is a part of parabola. It is reasonable by comparing with previous theory and analogous experiments. The effects of major factors on thickness and half collapse width are further discussed. Numerical calculations and parametric analysis are carried out to illustrate the effects of different parameters on the mechanism, which is significant to the stability analysis of tunnel floor in rock media.</description><identifier>ISSN: 2095-2899</identifier><identifier>EISSN: 2227-5223</identifier><identifier>DOI: 10.1007/s11771-017-3498-5</identifier><language>eng</language><publisher>Changsha: Central South University</publisher><subject>bound ; catastrophe ; Catastrophe theory ; Collapse ; criterion ; Damage assessment ; Detaching ; Engineering ; Exact solutions ; Failure mechanisms ; floor ; functional ; Hoek-Brown ; karst ; Limit analysis ; Metallic Materials ; Parametric analysis ; safety ; Stability analysis ; theory ; Thickness ; tunnel ; Tunnels ; upper</subject><ispartof>Journal of Central South University, 2017-04, Vol.24 (4), p.957-966</ispartof><rights>Central South University Press and Springer-Verlag Berlin Heidelberg 2017</rights><rights>Copyright Springer Science & Business Media 2017</rights><rights>Copyright © Wanfang Data Co. 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All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c380t-72bd70570bfa8403aac94a03aeee77642677472573c08b427431cf228f4e11e63</citedby><cites>FETCH-LOGICAL-c380t-72bd70570bfa8403aac94a03aeee77642677472573c08b427431cf228f4e11e63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/85521A/85521A.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11771-017-3498-5$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11771-017-3498-5$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27922,27923,41486,42555,51317</link.rule.ids></links><search><creatorcontrib>杨小礼;李正伟;刘拯安;肖海波</creatorcontrib><title>Collapse analysis of tunnel floor in karst area based on Hoek-Brown rock media</title><title>Journal of Central South University</title><addtitle>J. Cent. South Univ</addtitle><addtitle>Journal of Central South University of Technology</addtitle><description>Collapse shape of tunnel floor in Hoek-Brown rock media is investigated with the functional catastrophe theory. Thestability of rock system in tunnel floor, which is determined by thickness, half collapse width, half length of cave and detaching curve, has great secure and economic significance in practical engineering. To investigate the failure mechanisms and the outline of detaching block, a reliable damage model is presumed by making reference to the limit analysis theory. The analytical solutions of detaching curve, half collapse width on tunnel floor and the critical and maximum values of collapse thickness are derived based on Hoek-Brown criterion and functional catastrophe theory. The result shows that 0.5 is a most probable condition for instability, and the shape of detaching curve is a part of parabola. It is reasonable by comparing with previous theory and analogous experiments. The effects of major factors on thickness and half collapse width are further discussed. Numerical calculations and parametric analysis are carried out to illustrate the effects of different parameters on the mechanism, which is significant to the stability analysis of tunnel floor in rock media.</description><subject>bound</subject><subject>catastrophe</subject><subject>Catastrophe theory</subject><subject>Collapse</subject><subject>criterion</subject><subject>Damage assessment</subject><subject>Detaching</subject><subject>Engineering</subject><subject>Exact solutions</subject><subject>Failure mechanisms</subject><subject>floor</subject><subject>functional</subject><subject>Hoek-Brown</subject><subject>karst</subject><subject>Limit analysis</subject><subject>Metallic Materials</subject><subject>Parametric analysis</subject><subject>safety</subject><subject>Stability analysis</subject><subject>theory</subject><subject>Thickness</subject><subject>tunnel</subject><subject>Tunnels</subject><subject>upper</subject><issn>2095-2899</issn><issn>2227-5223</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kL1OwzAURiMEElXpA7BZYkSG65_EzggVUKQKFpgtJ3FCaGq3dqq2PD2uUgET0_Vwvs_3niS5JHBDAMRtIEQIgoEIzHgucXqSjCilAqeUstP4hjzFVOb5eTIJoS2AEZqxLM9GycvUdZ1eBYO01d0-tAG5GvUba02H6s45j1qLFtqHHmlvNCp0MBVyFs2cWeB777YWeVcu0NJUrb5IzmrdBTM5znHy_vjwNp3h-evT8_RujksmoceCFpWAVEBRa8mBaV3mXMdpjBEi4zQTgguaClaCLDgVnJGyplTW3BBiMjZOroferba1to36dBsfDwjqyzb7arcrlKHRB3CgLNJXA73ybr0xof_FiczTTEImZaTIQJXeheBNrVa-XWq_VwTUwbMaPKvYqw6eVRozdMiEyNrG-D_N_4SO65QfzjbrmPv5SQDElfMogH0DnGyJog</recordid><startdate>20170401</startdate><enddate>20170401</enddate><creator>杨小礼;李正伟;刘拯安;肖海波</creator><general>Central South University</general><general>Springer Nature B.V</general><general>School of Civil Engineering, Central South University, Changsha 410075, China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20170401</creationdate><title>Collapse analysis of tunnel floor in karst area based on Hoek-Brown rock media</title><author>杨小礼;李正伟;刘拯安;肖海波</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c380t-72bd70570bfa8403aac94a03aeee77642677472573c08b427431cf228f4e11e63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>bound</topic><topic>catastrophe</topic><topic>Catastrophe theory</topic><topic>Collapse</topic><topic>criterion</topic><topic>Damage assessment</topic><topic>Detaching</topic><topic>Engineering</topic><topic>Exact solutions</topic><topic>Failure mechanisms</topic><topic>floor</topic><topic>functional</topic><topic>Hoek-Brown</topic><topic>karst</topic><topic>Limit analysis</topic><topic>Metallic Materials</topic><topic>Parametric analysis</topic><topic>safety</topic><topic>Stability analysis</topic><topic>theory</topic><topic>Thickness</topic><topic>tunnel</topic><topic>Tunnels</topic><topic>upper</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>杨小礼;李正伟;刘拯安;肖海波</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-工程技术</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Journal of Central South University</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>杨小礼;李正伟;刘拯安;肖海波</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Collapse analysis of tunnel floor in karst area based on Hoek-Brown rock media</atitle><jtitle>Journal of Central South University</jtitle><stitle>J. Cent. South Univ</stitle><addtitle>Journal of Central South University of Technology</addtitle><date>2017-04-01</date><risdate>2017</risdate><volume>24</volume><issue>4</issue><spage>957</spage><epage>966</epage><pages>957-966</pages><issn>2095-2899</issn><eissn>2227-5223</eissn><abstract>Collapse shape of tunnel floor in Hoek-Brown rock media is investigated with the functional catastrophe theory. Thestability of rock system in tunnel floor, which is determined by thickness, half collapse width, half length of cave and detaching curve, has great secure and economic significance in practical engineering. To investigate the failure mechanisms and the outline of detaching block, a reliable damage model is presumed by making reference to the limit analysis theory. The analytical solutions of detaching curve, half collapse width on tunnel floor and the critical and maximum values of collapse thickness are derived based on Hoek-Brown criterion and functional catastrophe theory. The result shows that 0.5 is a most probable condition for instability, and the shape of detaching curve is a part of parabola. It is reasonable by comparing with previous theory and analogous experiments. The effects of major factors on thickness and half collapse width are further discussed. Numerical calculations and parametric analysis are carried out to illustrate the effects of different parameters on the mechanism, which is significant to the stability analysis of tunnel floor in rock media.</abstract><cop>Changsha</cop><pub>Central South University</pub><doi>10.1007/s11771-017-3498-5</doi><tpages>10</tpages></addata></record> |
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| subjects | bound catastrophe Catastrophe theory Collapse criterion Damage assessment Detaching Engineering Exact solutions Failure mechanisms floor functional Hoek-Brown karst Limit analysis Metallic Materials Parametric analysis safety Stability analysis theory Thickness tunnel Tunnels upper |
| title | Collapse analysis of tunnel floor in karst area based on Hoek-Brown rock media |
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