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List of products by author: N. Phien-Wej
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Challenges in Design and Construction of Bangkok MRT Orange Line Project
Abstract: The MRT construction works in Bangkok are more complicated than works in earlier projects. As the tunnel alignment passes through the congested urban areas in the city, it either clashes with or passes beneath several pre-existing structures. Underpinning works are then required. Assessment of movement of ground and structure plays an important role in the project. Besides, the rebound of...
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Challenges in Design and Construction of MRTA Tunnel and Station in Recent Bangkok Blue Line Extension Project
Abstract: Bangkok is in the state of expanding the mass rapid transit system to cope with the rapid rising and city expansion. Recently, underground MRTA lines have been constructed and are being implemented. They are located in congested city area which demands rigorous and careful design considerations to overcome constraints related to city land use regulations and restrictions on construction...
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Design and Construction of an Intervention Shaft of MRT Orange Line Project
Abstract: Currently, the Orange Line East Project of Mass Rapid Transit Authority of Thailand (MRTA) is being constructed. The main structures of this project consist of cut and cover tunnels, intervention shafts, stations and bored tunnels. For the intervention shafts (IVS), the depth of excavation is approximately 25 to 40 m from ground surface using top-down construction. The IVS has 4 to 5 permanent...
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Evaluation of Multi-Standpipe Grouting Technique for Mae Ngad - Mae Kuang Water Diversion Tunnel Project
Abstract: Tunnel excavation in Mae Ngad - Mae Kuang Water Diversion Tunnel Project has hit several water-bearing zones. Inflow more than 500 liters/minute was frequently recorded but the allowable water inflow level for this project is 60 liters/minute per 100 meters. An insufficient capacity of water pumping of the project results in flooding by as much as 0.5 meters. Multi-standpipe grouting is...
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Ground Improvement Applications for MRT Orange Line (East Section) Project
Abstract: The overview of ground improvement applications by jet grouting method for underground structures (underground stations and bored tunnels) between MRTA Station (OR14) and Pradit Manutham Station (OR15) of MRT Orange Line (East Section) project is presented in this paper. The main purposes of ground improvement are 1) to ensure water tightness for TBM break-in/break-out at stations 2) to control...
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