In October 2022, China Overseas Engineering Group Company and China Railway No. 2 Engineering Group Company launched a 6.4m diameter Robbins Double Shield TBM, which is boring the 13.1km headrace tunnel for the Sunkoshi Marin Diversion Multipurpose Project (SMDMP) located in southern Nepal.
Since the Robbins TBM was launched in Nepal it has bored over 500m, with a best week of 224.6m, and a best day of 36.6m
The bored tunnel will connect to a new 28.6MW surface powerhouse on the Marin River to alleviate the shortage of power supply in the area. It will also be used for farmland irrigation in the districts...
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