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學(xué)習(xí)快評丨qibao666888　　中??(zhong)新??(xin)網(wǎng)??(wang)汕??(shan)頭??(tou)3月??(yue)26日??(ri)電??(dian)(記??(ji)者??(zhe) 李??(li)怡?(yi)青??(qing))26日??(ri)廣??(guang)東??(dong)汕??(shan)頭??(tou)灣??(wan)海??(hai)底??(di)68米??(mi)深??(shen)處??(chu)??，隨??(sui)著??(zhe)“永?(yong)平??(ping)號??(hao)”盾??(dun)構(gòu)??(gou)機??(ji)近秘(jin)5層??(ceng)樓??(lou)高??(gao)的?(de)直??(zhi)徑??(jing)為??(wei)14.57m的??(de)刀??(dao)盤??(pan)破?(po)巖??(yan)而??(er)出??(chu)??。??標(biāo)??(biao)志??(zhi)著??(zhe)世??(shi)界??(jie)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)高??(gao)鐵??(tie)海??(hai)底??(di)隧??(sui)道??(dao)——汕??(shan)汕?(shan)高??(gao)鐵??(tie)汕??(shan)頭??(tou)灣?(wan)海??(hai)底??(di)隧??(sui)道??(dao)成??(cheng)功??(gong)貫??(guan)通??(tong)???！　∧??(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)??。??。