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Performance characteristics of tunnel boring machine in basalt and pyroclastic rocks of Deccan traps–A case study 被引量:5

Performance characteristics of tunnel boring machine in basalt and pyroclastic rocks of Deccan traps–A case study
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摘要 A12.24km long tunnel between Maroshi and Ruparel College is being excavated by tunnel boring machine(TBM)to improve the water supply system of Greater Mumbai,India.In this paper,attempt has been made to establish the relationship between various litho-units of Deccan traps,stability of tunnel and TBM performances during the construction of5.83km long tunnel between Maroshi and Vakola.The Maroshi–Vakola tunnel passes under the Mumbai Airport and crosses both runways with an overburden cover of around70m.The tunneling work was carried out without disturbance to the ground.The rock types encountered during excavation arefine compacted basalt,porphyritic basalt,amygdaloidal basalt pyroclastic rocks with layers of red boles and intertrappean beds consisting of various types of shales Relations between rock mass properties,physico-mechanical properties,TBM specifications and the cor responding TBM performance were established.A number of support systems installed in the tunne during excavation were also discussed.The aim of this paper is to establish,with appropriate accuracy the nature of subsurface rock mass condition and to study how it will react to or behave during under ground excavation by TBM.The experiences gained from this project will increase the ability to cope with unexpected ground conditions during tunneling using TBM. A12.24km long tunnel between Maroshi and Ruparel College is being excavated by tunnel boring machine(TBM)to improve the water supply system of Greater Mumbai,India.In this paper,attempt has been made to establish the relationship between various litho-units of Deccan traps,stability of tunnel and TBM performances during the construction of5.83km long tunnel between Maroshi and Vakola.The Maroshi–Vakola tunnel passes under the Mumbai Airport and crosses both runways with an overburden cover of around70m.The tunneling work was carried out without disturbance to the ground.The rock types encountered during excavation arefine compacted basalt,porphyritic basalt,amygdaloidal basalt pyroclastic rocks with layers of red boles and intertrappean beds consisting of various types of shales Relations between rock mass properties,physico-mechanical properties,TBM specifications and the cor responding TBM performance were established.A number of support systems installed in the tunne during excavation were also discussed.The aim of this paper is to establish,with appropriate accuracy the nature of subsurface rock mass condition and to study how it will react to or behave during under ground excavation by TBM.The experiences gained from this project will increase the ability to cope with unexpected ground conditions during tunneling using TBM.
出处 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2014年第1期36-47,共12页 岩石力学与岩土工程学报(英文版)
基金 a part of the project "Universities Natural Science Research Project in Anhui Province" (KJ2011Z375) supported by Department of Education of Anhui Province
关键词 TUNNELING Open-type tunnel boring machine(TBM) Rock mass classification Ground supporting Deccan trap Tunneling Open-type tunnel boring machine(TBM) Rock mass classification Ground supporting Deccan trap
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参考文献5

  • 1M Sapigni,M Berti,E Bethaz,A Busillo,G Cardone.TBM performance estimation using rock mass classifications[J].International Journal of Rock Mechanics and Mining Sciences.2002(6)
  • 2Q.M. Gong,J. Zhao.Influence of rock brittleness on TBM penetration rate in Singapore granite[J].Tunnelling and Underground Space Technology incorporating Trenchless Technology Research.2006(3)
  • 3Q.M. Gong,J. Zhao.Development of a rock mass characteristics model for TBM penetration rate prediction[J].International Journal of Rock Mechanics and Mining Sciences.2008(1)
  • 4Jafar Khademi Hamidi,Kourosh Shahriar,Bahram Rezai,Jamal Rostami.Performance prediction of hard rock TBM using Rock Mass Rating (RMR) system[J].Tunnelling and Underground Space Technology incorporating Trenchless Technology Research.2010(4)
  • 5N. Barton,R. Lien,J. Lunde.Engineering classification of rock masses for the design of tunnel support[J].Rock Mechanics Felsmechanik Mécanique des Roches.1974(4)

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