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引滦入津输水隧洞全长11.39公里(包括明挖段1.72公里)。地层岩性主要为太古界片麻岩系,岩石饱和抗压强度平均为650～1,300公斤/厘米~2,弹性模量
The Luan River inlet Tianjin water transport tunnel a total length of 11.39 kilometers (including Ming dug 1.72 km). The stratigraphic lithology is mainly Archean gneiss, rock saturation compressive strength average 650 ~ 1,300 kg / cm ~ 2, elastic modulus