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學習快評丨qibao666888　　上??(shang)午??(wu)??，隨??(sui)著?(zhe)最??(zui)后??(hou)一??(yi)層??(ceng)巖??(yan)體??(ti)成??(cheng)功??(gong)破??(po)除??(chu)??，“永?(yong)平??(ping)號??(hao)”盾??(dun)構(gòu)??(gou)機??(ji)順??(shun)利??(li)露??(lu)出??(chu)??，意??(yi)味??(wei)著??(zhe)汕??(shan)頭??(tou)灣??(wan)海??(hai)底??(di)隧??(sui)道??(dao)正??(zheng)式??(shi)貫??(guan)通??(tong)??。??盾?(dun)構(gòu)??(gou)機??(ji)的?(de)直??(zhi)徑??(jing)達??(da)到??(dao)14.57米??(mi)??，相??(xiang)當?(dang)于??(yu)5層??(ceng)樓??(lou)左??(zuo)右??(you)的??(de)高?(gao)度??(du)???！　∩??(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(qū)??(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(gòu)??(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(shè)??(she)難??(nan)度??(du)大??(da)??，施??(shi)工??(gong)工??(gong)藝??(yi)復??(fu)雜??(za)?。??歷?(li)經(jīng)??(jing)5年??(nian)左??(zuo)右??(you)的??(de)時??(shi)間??(jian)建??(jian)設(shè)??(she)??，汕??(shan)頭??(tou)灣??(wan)海??(hai)底??(di)隧??(sui)道?(dao)為??(wei)我??(wo)國祝(guo)高??(gao)鐵??(tie)海?(hai)域??(yu)隧?(sui)道??(dao)建??(jian)設(shè)??(she)積??(ji)累??(lei)了??(le)有??(you)益??(yi)經(jīng)??(jing)驗??(yan)?。。