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Sangaldan Tunnel
The Sangaldan Railway Tunnel is a 7.1 km (4.4 mile) railway tunnel between Katra-Banihal section of Kashmir Railway located to the north of Sangaldan of middle Himalayas in Jammu and Kashmir, India near Ramban town. The tunnel was completed on 4 December 2010.
==Background and Challenges==
The tunnel has been constructed by Konkan Railway Corporation, a subsidiary of the Indian Railways, as a part of its Udhampur-Srinagar-Baramulla rail link project. The tunnel passes through strata of poor geology, consisting of Muree formation. The excavation was done using drill and blast method. The construction phase was littered with tunnel collapses and slope failures.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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