在(zai)交(jiao)通繁忙地(di)段進(jin)行地(di)下管線管道(dao)(dao)疏通施工，不需要(yao)將(jiang)路面全面開挖，只要(yao)在(zai)道(dao)(dao)路上占據寬1.5米、長10左右的空間，便可以為該道(dao)(dao)路鋪設新(xin)的地(di)下管線。
目前，上海市政管道(dao)(dao)疏通(tong)(tong)工(gong)程公司在(zai)排(pai)水(shui)管道(dao)(dao)施(shi)(shi)工(gong)中便采(cai)用(yong)了這種(zhong)非開(kai)挖技(ji)(ji)(ji)術。地(di)(di)下管線施(shi)(shi)工(gong)未(wei)進行斷交，同時也極大(da)地(di)(di)減少了施(shi)(shi)工(gong)量，是在(zai)地(di)(di)下管道(dao)(dao)施(shi)(shi)工(gong)中首次采(cai)用(yong)這一新技(ji)(ji)(ji)術。這種(zhong)不用(yong)開(kai)挖的技(ji)(ji)(ji)術即是在(zai)進行管道(dao)(dao)清洗(xi)和視(shi)頻檢查(cha)后(hou)，根據現場(chang)環境及交通(tong)(tong)狀況，選(xuan)擇設(she)置工(gong)作(zuo)坑，將(jiang)(jiang)(jiang)管線在(zai)工(gong)程量最(zui)小的最(zui)佳地(di)(di)點穿進管道(dao)(dao)。分(fen)為(wei)兩期的工(gong)程，只需要(yao)地(di)(di)下管線施(shi)(shi)工(gong)。管道(dao)(dao)疏通(tong)(tong)后(hou)，施(shi)(shi)工(gong)人(ren)員會(hui)將(jiang)(jiang)(jiang)名為(wei)HDpE的材料按照修(xiu)復后(hou)的尺寸拉入管道(dao)(dao)中，成為(wei)修(xiu)復管道(dao)(dao)的內(nei)壁。施(shi)(shi)工(gong)完成后(hou)，將(jiang)(jiang)(jiang)工(gong)作(zuo)坑回填便可以(yi)恢(hui)復路面。
