{"title":"Bentonite and Grout Flow Around a TBM","authors":"A. Bezuijen","doi":"10.1201/noe0415408073.ch64","DOIUrl":"https://doi.org/10.1201/noe0415408073.ch64","url":null,"abstract":"AB This article focuses on the possibility that grout can flow from the tail of a tunnel boring machine to its face. A one-dimensional numerical model was developed to better understand the order of magnitudes of the flow of grout and bentonite, the pressure distribution, as well as the soil deformation around the TBM’s shield. The author explains that although a TBM shield appears to be a tube of a constant diameter, it is ever so slightly smaller at the tail end. The article includes a number of charts and graphs, which illuminate the fact that there is a direct relation between grouting pressure and volume loss, and that a good pressure control is needed when tunneling through soft soil.","PeriodicalId":377162,"journal":{"name":"Tunnels and Tunnelling International","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126874356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"EL AZHAR ROAD TUNNEL, CAIRO'S NEW FRONTIER","authors":"B. Welburn, X. D. Nettancourt","doi":"10.1680/CIEN.2002.150.3.114","DOIUrl":"https://doi.org/10.1680/CIEN.2002.150.3.114","url":null,"abstract":"Cairo's new El Azhar road tunnel is 2.4 km long and was built to the latest standards of fire safety. It follows some of the most prominent roadways in the city, but had to be realigned as more study uncovered hidden elements. The ventilation system was designed to maximize fire safety and minimize pollution from vehicle emissions. High-velocity air jets are central to the design. The tunnel was built with escape chutes and a sacrificial lining that would spare the tunnel from the spalling caused by high temperature fires that lead the concrete to crumble as the water it contains expands from the heat. A system of slides creates easy escape access to ventilation chambers that have ladders to the surface. The tunnel opened in October 2001 after 40 months and now diverts more than 50,000 vehicle movements a day from the historic city center.","PeriodicalId":377162,"journal":{"name":"Tunnels and Tunnelling International","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134041602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"ENSURING THE RIGHT SUPPORT SYSTEM","authors":"P. Hartley","doi":"10.1016/0148-9062(96)81930-9","DOIUrl":"https://doi.org/10.1016/0148-9062(96)81930-9","url":null,"abstract":"","PeriodicalId":377162,"journal":{"name":"Tunnels and Tunnelling International","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132082885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"GROUND CHARACTERIZATION FOR THE PROVIDENCE CSO STORAGE TUNNELS","authors":"R. Dill, D. Dobbels, J. Parker","doi":"10.1016/0148-9062(95)99769-t","DOIUrl":"https://doi.org/10.1016/0148-9062(95)99769-t","url":null,"abstract":"","PeriodicalId":377162,"journal":{"name":"Tunnels and Tunnelling International","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127820704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"BRAZILIANS TAKE ON THE MIDMAR WATER TUNNEL","authors":"S. Wallis","doi":"10.1016/0148-9062(95)94423-0","DOIUrl":"https://doi.org/10.1016/0148-9062(95)94423-0","url":null,"abstract":"","PeriodicalId":377162,"journal":{"name":"Tunnels and Tunnelling International","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125875266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"UNDERGROUND IN A VIRTUAL WORLD","authors":"E. Russell","doi":"10.1016/0148-9062(95)99612-2","DOIUrl":"https://doi.org/10.1016/0148-9062(95)99612-2","url":null,"abstract":"","PeriodicalId":377162,"journal":{"name":"Tunnels and Tunnelling International","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134215566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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