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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??(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??(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??(nei)開??(kai)通??(tong)水??(shui)壓??(ya)最祝(zui)大??(da)的?(de)海??(hai)底??(di)隧??(sui)道?(dao)??。?。