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　　2003年??(nian)建??(jian)成??(cheng)通?(tong)車(chē)??(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(chē)??(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(chē)?(che)流??(liu)量??(liang)峰??(feng)值??(zhi)近?(jin)3000萬(wàn)??(wan)輛??(liang)??，為??(wei)通?(tong)車(chē)??(che)初??(chu)期??(qi)的??(de)2.4倍??(bei)??，大?(da)型??(xing)貨??(huo)車(chē)??(che)(含??(han)集??(ji)卡??(ka))約??(yue)占??(zhan)流??(liu)量??(liang)的??(de)80%??。多?(duo)年?(nian)來(lái)??(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)”???！　≡??(zai)采??(cai)訪??(fang)中?(zhong)??，記??(ji)者??(zhe)了?(le)解??(jie)到??(dao)??，修??(xiu)繕??(shan)工??(gong)程??(cheng)中??(zhong)取??(qu)得??(de)的?(de)多??(duo)項(xiàng)?(xiang)標(biāo)??(biao)準(zhǔn)??(zhun)及??(ji)專??(zhuan)利??(li)成??(cheng)果??(guo)??，填??(tian)補(bǔ)?(bu)了??(le)中??(zhong)國(guó)??(guo)隧??(sui)道??(dao)修??(xiu)復(fù)??(fu)技??(ji)術(shù)??(shu)的??(de)多??(duo)項(xiàng)?(xiang)空??(kong)白??(bai)??，建??(jian)立??(li)起??(qi)國(guó)?(guo)內(nèi)??(nei)首??(shou)套??(tao)《隧??(sui)道??(dao)結(jié)??(jie)構(gòu)??(gou)健??(jian)康??(kang)監(jiān)??(jian)測(cè)??(ce)系??(xi)統(tǒng)??(tong)技??(ji)術(shù)??(shu)標(biāo)??(biao)準(zhǔn)??(zhun)》??。?(完??(wan))。