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學習快評丨qibao666888　　汕??(shan)頭?(tou)灣??(wan)海??(hai)底??(di)隧??(sui)道??(dao)全?(quan)長??(chang)9781米??(mi)??，最??(zui)深??(shen)處??(chu)距??(ju)離?(li)海??(hai)面??(mian)98.5米??(mi)??，所??(suo)處??(chu)海?(hai)域??(yu)位??(wei)于??(yu)8度??(du)高??(gao)烈??(lie)度??(du)地??(di)震??(zhen)區??(qu)??，隧?(sui)道??(dao)共??(gong)需??(xu)要??(yao)穿??(chuan)越??(yue)17條??(tiao)斷??(duan)層?(ceng)破??(po)碎??(sui)帶??(dai)??，其??(qi)中??(zhong)??，盾??(dun)構??(gou)段??(duan)既??(ji)要??(yao)穿??(chuan)越??(yue)長??(chang)距??(ju)離?(li)的?(de)堅??(jian)硬??(ying)花??(hua)崗??(gang)巖??(yan)地??(di)層??(ceng)??，礦??(kuang)山??(shan)段??(duan)又??(you)要??(yao)解??(jie)決??(jue)穿??(chuan)越??(yue)僅??(jin)2米?(mi)多??(duo)覆??(fu)巖??(yan)的??(de)軟?(ruan)弱??(ruo)地??(di)層?(ceng)難??(nan)題??(ti)??，建??(jian)設??(she)難??(nan)度??(du)大??(da)??，施??(shi)工?(gong)工??(gong)藝??(yi)復??(fu)雜??(za)??。??歷??(li)經??(jing)5年??(nian)左??(zuo)右??(you)的??(de)時??(shi)間??(jian)建?(jian)設??(she)??，汕??(shan)頭??(tou)灣??(wan)海??(hai)底??(di)隧?(sui)道??(dao)為??(wei)我??(wo)國??(guo)高??(gao)鐵??(tie)海??(hai)域??(yu)隧??(sui)道??(dao)建??(jian)設??(she)積??(ji)累??(lei)了?(le)有??(you)益??(yi)經??(jing)驗??(yan)??。　　在??(zai)海??(hai)底??(di)隧??(sui)道??(dao)實??(shi)現??(xian)貫??(guan)通??(tong)后??(hou)??，盾??(dun)構??(gou)機??(ji)要??(yao)再?(zai)向??(xiang)前??(qian)空??(kong)推??(tui)約??(yue)463米??(mi)??，到??(dao)達??(da)指??(zhi)定??(ding)位??(wei)置??(zhi)后??(hou)再??(zai)進?(jin)行??(xing)拆??(chai)機??(ji)??。??這??(zhe)也??(ye)將??(jiang)是??(shi)國??(guo)內??(nei)首??(shou)次??(ci)實??(shi)施??(shi)超??(chao)大??(da)直??(zhi)徑??(jing)盾??(dun)構??(gou)海??(hai)底??(di)洞??(dong)內??(nei)拆??(chai)解??(jie)??。。