Performance characteristics of tunnel boring machine in basalt and pyroclastic rocks of Deccan traps - A case study
Performance characteristics of tunnel boring machine in basalt and pyroclastic rocks of Deccan traps - A case study
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DOI：
10.1016/j.jrmge.2013.11.003
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发表时间：
2014-02
影响因子：
7.3
通讯作者：
P. Jain;A. Naithani;T. Singh
中科院分区：
文献类型：
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作者：
P. Jain;A. Naithani;T. Singh
为了改善印度大孟买的供水系统，正在用隧道掘进机（TBM）挖掘Maroshi和Ruparel学院之间的一条12.24公里长的隧道。本文在马罗希-瓦科拉5.83km长隧道施工过程中，尝试建立德干圈闭各岩石单元、隧道稳定性和TBM性能之间的关系。Maroshi-Vakola隧道穿过孟买机场下方，穿过两条跑道，覆盖层约为70 m。隧道工程在没有对地面造成扰动的情况下进行。在开挖过程中遇到的岩石类型是细压实玄武岩、斑状玄武岩、杏仁状玄武岩、火山碎屑岩，具有红色钻孔层和由各种类型页岩组成的圈闭层。建立了岩体性质、物理力学性质、TBM技术参数与相应的TBM性能之间的关系。还讨论了在开挖过程中安装在隧道中的一些支撑系统。本文的目的是建立，适当的精度，地下岩体条件的性质，并研究如何将反应或行为在地下掘进机。从该项目中获得的经验，将提高能力，以科普意外的地面条件，在隧道掘进机使用。
A 12.24 km 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 of 5.83 km long tunnel between Maroshi and Vakola. The Maroshi–Vakola tunnel passes under the Mumbai Airport and crosses both runways with an overburden cover of around 70 m. The tunneling work was carried out without disturbance to the ground. The rock types encountered during excavation are fine 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 corresponding TBM performance were established. A number of support systems installed in the tunnel 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 underground excavation by TBM. The experiences gained from this project will increase the ability to cope with unexpected ground conditions during tunneling using TBM.