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學(xué)習(xí)快評丨qibao666888　　3月??(yue)26日??(ri)??，我??(wo)國??(guo)高??(gao)速??(su)鐵??(tie)路??(lu)網(wǎng)??(wang)沿??(yan)海??(hai)通??(tong)道??(dao)的??(de)重??(zhong)要??(yao)組?(zu)成??(cheng)部??(bu)分??(fen)——汕??(shan)汕??(shan)高??(gao)鐵?(tie)迎??(ying)來??(lai)新??(xin)進(jìn)??(jin)展??(zhan)：汕??(shan)頭??(tou)至??(zhi)汕??(shan)頭??(tou)南??(nan)段??(duan)關(guān)?(guan)鍵??(jian)控?(kong)制??(zhi)性??(xing)工??(gong)程??(cheng)汕??(shan)頭??(tou)灣??(wan)海??(hai)底??(di)隧??(sui)道??(dao)成??(cheng)功??(gong)貫??(guan)通??(tong)??，這??(zhe)也??(ye)是??(shi)我??(wo)國??(guo)首??(shou)座??(zuo)設(shè)??(she)計??(ji)時??(shi)速??(su)350公??(gong)里?(li)、單??(dan)洞??(dong)雙??(shuang)線??(xian)的??(de)高??(gao)鐵??(tie)海??(hai)底??(di)隧??(sui)道??(dao)??。??　　在??(zai)海??(hai)底??(di)隧?(sui)道??(dao)實(shí)??(shi)現(xiàn)??(xian)貫??(guan)通??(tong)后??(hou)??，盾?(dun)構(gòu)??(gou)機(jī)??(ji)要??(yao)再??(zai)向??(xiang)前??(qian)空??(kong)推??(tui)約?(yue)463米??(mi)??，到??(dao)達(dá)??(da)指??(zhi)定??(ding)位??(wei)置??(zhi)后??(hou)再??(zai)進(jìn)??(jin)行??(xing)拆??(chai)機(jī)??(ji)??。??這??(zhe)也??(ye)將?(jiang)是??(shi)國??(guo)內(nèi)?(nei)首??(shou)次??(ci)實(shí)??(shi)施??(shi)超??(chao)大?(da)直??(zhi)徑??(jing)盾??(dun)構(gòu)??(gou)海??(hai)底??(di)洞??(dong)內(nèi)?(nei)拆??(chai)解??(jie)??。。