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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(guó)??(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(yùn)??(yun)車秘(che)輛??(liang)越??(yue)江??(jiang)通??(tong)道??(dao)??。??據(jù)??(ju)統(tǒng)??(tong)計(jì)??(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(fù)??(fu)荷??(he)運(yùn)??(yun)營(yíng)??(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)”???！　≡??(gai)工??(gong)程??(cheng)同??(tong)步??(bu)構(gòu)??(gou)建??(jian)了??(le)既??(ji)有??(you)公??(gong)路??(lu)隧??(sui)道?(dao)更??(geng)新??(xin)的??(de)成??(cheng)套??(tao)技??(ji)術(shù)??(shu)體?(ti)系??(xi)??，實(shí)??(shi)現(xiàn)??(xian)了?(le)既??(ji)有??(you)隧??(sui)道??(dao)建??(jian)管??(guan)養(yǎng)??(yang)一??(yi)體??(ti)化??(hua)智??(zhi)能??(neng)管??(guan)控??(kong)??，為??(wei)推??(tui)動(dòng)??(dong)城??(cheng)市??(shi)公??(gong)共??(gong)空??(kong)間?(jian)設(shè)??(she)施??(shi)優(yōu)??(you)化??(hua)提??(ti)供??(gong)了??(le)可??(ke)復(fù)??(fu)制??(zhi)的??(de)經(jīng)?(jing)驗(yàn)??(yan)??。??。