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　　2003年??(nian)建??(jian)成??(cheng)通??(tong)車??(che)的??(de)外??(wai)環(huán)??(huan)隧??(sui)道??(dao)是??(shi)中?(zhong)國??(guo)首??(shou)條??(tiao)采??(cai)用??(yong)沉??(chen)管??(guan)法??(fa)施??(shi)工?(gong)的??(de)特??(te)大??(da)型??(xing)越??(yue)江??(jiang)隧??(sui)道??(dao)??，曾??(zeng)是??(shi)上??(shang)海??(hai)北??(bei)部?(bu)地??(di)區(qū)?(qu)唯??(wei)一??(yi)的??(de)大??(da)型??(xing)貨??(huo)運??(yun)車??(che)輛??(liang)越??(yue)江??(jiang)通?(tong)道??(dao)??。??據??(ju)統(tǒng)??(tong)計??(ji)??，外??(wai)環(huán)??(huan)隧?(sui)道??(dao)歷??(li)年??(nian)車??(che)流??(liu)量??(liang)峰?(feng)值??(zhi)近??(jin)3000萬??(wan)輛??(liang)??，為??(wei)通??(tong)車??(che)初?(chu)期??(qi)的??(de)2.4倍??(bei)??，大??(da)型?(xing)貨??(huo)車??(che)(含??(han)集??(ji)卡??(ka))約??(yue)占?(zhan)流??(liu)量??(liang)的??(de)80%??。多??(duo)年??(nian)來??(lai)由??(you)于??(yu)超??(chao)負??(fu)荷??(he)運??(yun)營??(ying)等??(deng)各??(ge)種??(zhong)原??(yuan)因??(yin)??，隧??(sui)道??(dao)留??(liu)下??(xia)沉??(chen)管??(guan)接??(jie)頭??(tou)滲??(shen)漏??(lou)、路??(lu)面??(mian)損??(sun)壞??(huai)等??(deng)“歲?(sui)月??(yue)痕??(hen)跡??(ji)”??。　　據??(ju)了??(le)解??(jie)??，沉??(chen)管?(guan)接??(jie)頭?(tou)修??(xiu)復??(fu)是??(shi)業(yè)??(ye)界?(jie)公??(gong)認??(ren)的??(de)難?(nan)題??(ti)?。??針??(zhen)對??(dui)沉??(chen)管??(guan)結??(jie)構??(gou)特??(te)點??(dian)??，上??(shang)海??(hai)城??(cheng)投??(tou)公??(gong)路??(lu)投??(tou)資??(zi)(集??(ji)團??(tuan))有??(you)限??(xian)公??(gong)司??(si)組??(zu)織??(zhi)上??(shang)海??(hai)隧??(sui)道??(dao)設??(she)計??(ji)院??(yuan)、隧??(sui)道?(dao)股??(gu)份??(fen)上??(shang)海??(hai)隧??(sui)道??(dao)、同??(tong)濟??(ji)大??(da)學??(xue)組??(zu)建??(jian)技??(ji)術??(shu)專??(zhuan)家??(jia)團??(tuan)隊??(dui)??，突??(tu)破??(po)性??(xing)首??(shou)創(chuàng)??(chuang)“內??(nei)置??(zhi)式??(shi)接??(jie)頭??(tou)修??(xiu)復??(fu)加??(jia)固??(gu)技??(ji)術??(shu)”?。工??(gong)程??(cheng)團??(tuan)隊??(dui)對??(dui)沉??(chen)管??(guan)段??(duan)736米??(mi)隧??(sui)道?(dao)內??(nei)部??(bu)結??(jie)構?(gou)完?(wan)成??(cheng)修??(xiu)復??(fu)?。該??(gai)技??(ji)術??(shu)方??(fang)案??(an)基??(ji)于?(yu)端??(duan)鋼??(gang)殼??(ke)激??(ji)光??(guang)定??(ding)位??(wei)與??(yu)結??(jie)構??(gou)動??(dong)態(tài)??(tai)監(jiān)?(jian)測??(ce)??，創(chuàng)?(chuang)新??(xin)構??(gou)建??(jian)三??(san)重??(zhong)止??(zhi)水??(shui)防??(fang)御??(yu)體??(ti)系??(xi)??，在??(zai)沉??(chen)管??(guan)隧??(sui)道??(dao)修??(xiu)復?(fu)領??(ling)域?(yu)中??(zhong)尚??(shang)屬??(shu)首??(shou)例??(li)??，具??(ju)有??(you)極??(ji)高??(gao)的??(de)技??(ji)術??(shu)挑??(tiao)戰(zhàn)??(zhan)?。據??(ju)悉??(xi)??，修??(xiu)復??(fu)后?(hou)的??(de)沉??(chen)管??(guan)接??(jie)頭??(tou)耐?(nai)久??(jiu)性?(xing)顯??(xian)著??(zhu)提??(ti)升??(sheng)??，為??(wei)長??(chang)三??(san)角??(jiao)軟??(ruan)土??(tu)地??(di)基??(ji)沉??(chen)管??(guan)隧??(sui)道??(dao)的??(de)治??(zhi)理??(li)樹??(shu)立??(li)了??(le)技??(ji)術??(shu)標??(biao)桿??(gan)?。。