非(fei)開挖(wa)具有環(huan)保宜(yi)居等競爭優勢。一(yi)(yi)個城市的(de)(de)開挖(wa)量超過(guo)一(yi)(yi)定比例，必然(ran)影響(xiang)交通和市民正常生活(huo)。而非(fei)開挖(wa)施工(gong)(gong)(gong)不(bu)阻礙交通、不(bu)污染環(huan)境、不(bu)破壞植被(bei)、不(bu)影響(xiang)周邊建筑物、不(bu)影響(xiang)居民的(de)(de)一(yi)(yi)切(qie)正常生活(huo)和工(gong)(gong)(gong)作秩序。經(jing)過(guo)多年的(de)(de)發展，頂(ding)管(guan)技(ji)(ji)術(shu)(shu)在我國已得到大量地實際工(gong)(gong)(gong)程應用，且保持著高速(su)的(de)(de)增長(chang)勢頭，無論在技(ji)(ji)術(shu)(shu)上、頂(ding)管(guan)設(she)備還是(shi)施工(gong)(gong)(gong)工(gong)(gong)(gong)藝上取得了很大的(de)(de)進步，在某些方面甚至已達到了水平。地下(xia)管(guan)線(xian)是(shi)城市基礎設(she)施的(de)(de)重要(yao)組(zu)成部(bu)分，電(dian)纜管(guan)、上下(xia)水管(guan)網、熱力(動(dong)力)管(guan)道(dao)同地下(xia)鐵道(dao)一(yi)(yi)起(qi)，被(bei)稱(cheng)為城市的(de)(de)生命線(xian)，隨著社會的(de)(de)發展，地下(xia)管(guan)線(xian)的(de)(de)長(chang)度持續增加。

頂(ding)管(guan)施工(gong)(gong)(gong)降低工(gong)(gong)(gong)程(cheng)總造價(jia)。可浪費少量(liang)土方(fang)工(gong)(gong)(gong)程(cheng)、溝管(guan)基(ji)座(zuo)資料，增加(jia)基(ji)坑(keng)支護(hu)作業的工(gong)(gong)(gong)程(cheng)量(liang)，增加(jia)開挖(wa)(wa)、回(hui)填和(he)路面(mian)修復。頂(ding)管(guan)施工(gong)(gong)(gong)是一種在不開挖(wa)(wa)或許少開挖(wa)(wa)路面(mian)的狀況下(xia)，埋設(she)管(guan)道的施工(gong)(gong)(gong)技術(shu)，可解決管(guan)道埋設(she)施工(gong)(gong)(gong)對城市建筑物的毀壞和(he)形成交通堵塞的難題，在波動土層和(he)環境保護(hu)方(fang)具有優勢。頂(ding)進計(ji)算(suan)(suan)頂(ding)進計(ji)算(suan)(suan)其(qi)一包括(kuo)準確計(ji)算(suan)(suan)頂(ding)進推(tui)力，根據計(ji)算(suan)(suan)結(jie)果選(xuan)定(ding)相(xiang)應的油(you)缸(gang)類型和(he)確定(ding)中繼間的分布(bu);其(qi)二是工(gong)(gong)(gong)作井設(she)計(ji)，根據計(ji)算(suan)(suan)得到的 大頂(ding)力，提(ti)出(chu)工(gong)(gong)(gong)作井的加(jia)固方(fang)案。

工(gong)程地質(zhi)和水文地質(zhi)條件(jian)沿管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)土層(ceng)變化頻繁(fan)，所(suo)以在(zai)頂(ding)(ding)管(guan)(guan)(guan)(guan)(guan)(guan)施工(gong)前必須了解土層(ceng)的(de)(de)變化情況(kuang):此外對于要(yao)經過回填土地段(duan)(duan)，需要(yao)提前加固(gu)處理，以防(fang)頂(ding)(ding)管(guan)(guan)(guan)(guan)(guan)(guan)施工(gong)后地表(biao)有過大(da)的(de)(de)下沉(chen)。非開(kai)挖(wa)(wa)技術不開(kai)挖(wa)(wa)地面，故而被鋪設管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)(dao)的(de)(de)上部土層(ceng)未經擾動(dong)，管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)(dao)非開(kai)挖(wa)(wa)施工(gong)多少錢，管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)(dao)的(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)節端不易產生段(duan)(duan)差變形(xing)，其管(guan)(guan)(guan)(guan)(guan)(guan)道(dao)(dao)壽命(ming)亦大(da)于開(kai)挖(wa)(wa)法埋管(guan)(guan)(guan)(guan)(guan)(guan)。采(cai)用(yong)房下非開(kai)挖(wa)(wa)技術能節約(yue)一大(da)筆拆(chai)費用(yong)，減少動(dong)拆(chai)用(yong)房，縮短管(guan)(guan)(guan)(guan)(guan)(guan)線(xian)長度(du)。頂(ding)(ding)管(guan)(guan)(guan)(guan)(guan)(guan)機通(tong)常(chang)用(yong)于小(xiao)直徑斷面巖石和土體掘進，其中(zhong)心就是將一些本來集成在(zai)盾構機外部的(de)(de)功用(yong)部件(jian)拿出來，以減少其尺(chi)寸(cun)，頂(ding)(ding)推(tui)安裝在(zai)任務(wu)井(jing)里(li)。