這對(dui)交通(tong)繁忙、人(ren)口密集、地(di)面建(jian)筑物眾多、地(di)下管(guan)(guan)線復雜的城市(shi)是(shi)(shi)非(fei)(fei)(fei)常重(zhong)要的，它將為城市(shi)創造(zao)一個潔凈、舒適(shi)和美好的環境。由于(yu)非(fei)(fei)(fei)開(kai)挖(wa)(wa)的優勢(shi)逐(zhu)(zhu)漸(jian)被人(ren)們認同，非(fei)(fei)(fei)開(kai)挖(wa)(wa)技(ji)術日趨成熟，非(fei)(fei)(fei)開(kai)挖(wa)(wa)施(shi)工(gong)(gong)成本逐(zhu)(zhu)年(nian)降低(di)，所(suo)以非(fei)(fei)(fei)開(kai)挖(wa)(wa)的應(ying)(ying)(ying)用(yong)在逐(zhu)(zhu)年(nian)增長。頂管(guan)(guan)施(shi)工(gong)(gong)突出(chu)的特點就是(shi)(shi)適(shi)應(ying)(ying)(ying)性問(wen)題(ti)。針(zhen)對(dui)不(bu)同的地(di)質情(qing)況(kuang)、施(shi)工(gong)(gong)條件和設計要求(qiu)，選用(yong)與之適(shi)應(ying)(ying)(ying)的頂管(guan)(guan)施(shi)工(gong)(gong)方式(shi)，如何(he)正確(que)地(di)選擇(ze)頂管(guan)(guan)機和配套輔助設備，對(dui)于(yu)頂管(guan)(guan)施(shi)工(gong)(gong)來(lai)說將是(shi)(shi)非(fei)(fei)(fei)常關鍵的。

根據地(di)(di)質報告，并結合的(de)施(shi)(shi)工(gong)經(jing)驗，頂(ding)管(guan)(guan)(guan)機(ji)(ji)頭(tou)決定(ding)采用氣壓(ya)平衡(heng)網(wang)格（水沖(chong)）式(shi)機(ji)(ji)頭(tou)進(jin)行施(shi)(shi)工(gong)。該機(ji)(ji)頭(tou)在頂(ding)進(jin)過程中(zhong)，通(tong)過氣壓(ya)平衡(heng)正面土(tu)壓(ya)穩定(ding)機(ji)(ji)頭(tou)，管(guan)(guan)(guan)道非(fei)(fei)(fei)開(kai)挖施(shi)(shi)工(gong)施(shi)(shi)工(gong)公司，減少外(wai)部(bu)土(tu)體(ti)對周圍地(di)(di)面的(de)影響(xiang)。一節管(guan)(guan)(guan)子(zi)完成頂(ding)入(ru)土(tu)層(ceng)之后(hou)，再下第(di)二節管(guan)(guan)(guan)子(zi)繼續頂(ding)進(jin)。其原理是借助于主頂(ding)油缸及管(guan)(guan)(guan)道間(jian)、中(zhong)繼間(jian)等推力，把(ba)工(gong)具(ju)(ju)管(guan)(guan)(guan)或(huo)掘(jue)進(jin)機(ji)(ji)從工(gong)作坑(keng)內(nei)穿過土(tu)層(ceng)一直推進(jin)到接(jie)收坑(keng)內(nei)吊起。管(guan)(guan)(guan)道緊隨工(gong)具(ju)(ju)管(guan)(guan)(guan)或(huo)掘(jue)進(jin)機(ji)(ji)后(hou)，埋設在兩坑(keng)之間(jian)。由于非(fei)(fei)(fei)開(kai)挖的(de)優勢逐漸被(bei)人(ren)們認同，非(fei)(fei)(fei)開(kai)挖技術日趨成熟，非(fei)(fei)(fei)開(kai)挖施(shi)(shi)工(gong)成本(ben)逐年(nian)降低，所以(yi)非(fei)(fei)(fei)開(kai)挖的(de)應用在逐年(nian)增長。

該技(ji)術在我國沿(yan)海(hai)經(jing)濟發達地(di)(di)區廣泛用于城(cheng)市(shi)地(di)(di)下(xia)給(gei)排(pai)水管(guan)(guan)(guan)道(dao)(dao)、石油管(guan)(guan)(guan)道(dao)(dao)、通(tong)訊電纜等(deng)各(ge)種管(guan)(guan)(guan)道(dao)(dao)的(de)(de)非開(kai)挖鋪設。頂管(guan)(guan)(guan)施工借助于主頂油缸及管(guan)(guan)(guan)道(dao)(dao)間中繼間等(deng)的(de)(de)推力，把工具(ju)(ju)管(guan)(guan)(guan)或掘進機從(cong)工作井內穿過土層一直(zhi)推到接(jie)收(shou)井內吊起。與此同時，也就(jiu)把緊隨工具(ju)(ju)管(guan)(guan)(guan)或掘進機后的(de)(de)管(guan)(guan)(guan)道(dao)(dao)埋設在兩井之間，以期(qi)實現非開(kai)挖敷設地(di)(di)下(xia)管(guan)(guan)(guan)道(dao)(dao)的(de)(de)施工方法。地(di)(di)下(xia)管(guan)(guan)(guan)線(xian)是城(cheng)市(shi)基(ji)礎(chu)設施的(de)(de)重要組(zu)成部分，電纜管(guan)(guan)(guan)、上下(xia)水管(guan)(guan)(guan)網(wang)、熱力(動力)管(guan)(guan)(guan)道(dao)(dao)同地(di)(di)下(xia)鐵道(dao)(dao)一起，被稱為(wei)城(cheng)市(shi)的(de)(de)生(sheng)命線(xian)，隨著社(she)會的(de)(de)發展，地(di)(di)下(xia)管(guan)(guan)(guan)線(xian)的(de)(de)長度(du)持續增(zeng)加，非開(kai)挖市(shi)場存在生(sheng)長空間。