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學習快評丨qibao666888　　目??(mu)前??(qian)??，在??(zai)建??(jian)汕??(shan)頭??(tou)南?(nan)至??(zhi)汕??(shan)頭?(tou)段?(duan)正??(zheng)線??(xian)長??(chang)度??(du)19.8公??(gong)里??(li)??，其??(qi)中?(zhong)汕?(shan)頭??(tou)灣??(wan)海??(hai)底??(di)隧??(sui)道??(dao)正??(zheng)是??(shi)該??(gai)段??(duan)重??(zhong)難?(nan)點??(dian)控??(kong)制??(zhi)性??(xing)工??(gong)程??(cheng)??。??　　汕??(shan)頭??(tou)灣??(wan)海??(hai)底??(di)隧??(sui)道??(dao)貫??(guan)通??(tong)??，創(chuàng)?(chuang)造??(zao)了??(le)多??(duo)項??(xiang)紀??(ji)錄??(lu)：世??(shi)界??(jie)首??(shou)座??(zuo)設(shè)??(she)計??(ji)時??(shi)速??(su)350km單??(dan)洞??(dong)雙??(shuang)線??(xian)高??(gao)速??(su)鐵??(tie)路??(lu)海?(hai)底??(di)隧??(sui)道??(dao)、世?(shi)界??(jie)已?(yi)貫?(guan)通??(tong)最??(zui)大??(da)開??(kai)挖??(wa)直??(zhi)徑??(jing)鐵??(tie)路?(lu)海??(hai)底?(di)隧??(sui)道??(dao)、國??(guo)內(nèi)??(nei)穿??(chuan)越??(yue)活?(huo)動??(dong)斷??(duan)層??(ceng)最??(zui)多??(duo)的??(de)鐵??(tie)路??(lu)海??(hai)底??(di)隧??(sui)道??(dao)、國?(guo)內(nèi)??(nei)開??(kai)通??(tong)水??(shui)壓??(ya)最??(zui)大?(da)的??(de)海??(hai)底?(di)隧??(sui)道?(dao)??。??。