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Abstract: Mae Tang-Mae Ngat tunnel project in Chiang Mai Province, Northern Thailand is a part of Mae Kuang Reservoir Inflow Augmentation project. The main objective of the whole project is to diverse annually the surplus water about 147 million cu.m from Mae Tang river to Mae Ngat reservoir through a tunnel with a length of 25.4 km and a diameter of 4.0 m, and then transfer the water from Mae Ngat...
Abstract: This publication is prepared with the intention of sharing some useful practical information gained during tunneling in Thailand. There are three double shield TBMs now excavating on three tunnels with a length of 25.26 km. Due to difficulty of geological conditions, as a result, the TBMs encountered several complications such as cutterhead clogging, abnormal disc cutter wear, crown collapses...