就(jiu)是(shi)非(fei)開挖施(shi)工(gong)(gong)方法，是(shi)一(yi)種不開挖或(huo)者少開挖的管(guan)(guan)道埋(mai)設(she)施(shi)工(gong)(gong)技(ji)術。頂(ding)(ding)(ding)管(guan)(guan)法施(shi)工(gong)(gong)就(jiu)是(shi)在(zai)工(gong)(gong)作坑(keng)內借助(zhu)于頂(ding)(ding)(ding)進(jin)設(she)備(bei)產生的頂(ding)(ding)(ding)力，克服管(guan)(guan)道與周圍(wei)土(tu)壤的摩擦力，將(jiang)管(guan)(guan)道按設(she)計的坡(po)度頂(ding)(ding)(ding)入土(tu)中(zhong)，并將(jiang)土(tu)方運走。一(yi)節管(guan)(guan)子(zi)完成頂(ding)(ding)(ding)入土(tu)層之(zhi)后(hou)，再下第二節管(guan)(guan)子(zi)繼續頂(ding)(ding)(ding)進(jin)。其原理是(shi)借助(zhu)于主頂(ding)(ding)(ding)油缸及管(guan)(guan)道間(jian)、中(zhong)繼間(jian)等推力，把工(gong)(gong)具管(guan)(guan)或(huo)掘進(jin)機(ji)從工(gong)(gong)作坑(keng)內穿過土(tu)層一(yi)直推進(jin)到接收坑(keng)內吊起。管(guan)(guan)道緊隨工(gong)(gong)具管(guan)(guan)或(huo)掘進(jin)機(ji)后(hou)，埋(mai)設(she)在(zai)兩坑(keng)之(zhi)間(jian)。

頂管(guan)(guan)(guan)施(shi)工是繼盾(dun)構施(shi)工之后(hou)而發(fa)展起來的一種(zhong)地(di)(di)下管(guan)(guan)(guan)道施(shi)工方法，它不需(xu)要開(kai)挖面層(ceng)，并且能(neng)夠穿越公路、鐵(tie)道、河川、地(di)(di)面建(jian)筑(zhu)物(wu)(wu)、地(di)(di)下構筑(zhu)物(wu)(wu)以及各(ge)種(zhong)地(di)(di)下管(guan)(guan)(guan)線等。頂管(guan)(guan)(guan)施(shi)工借助于主頂油缸及管(guan)(guan)(guan)道間(jian)中繼間(jian)等的推(tui)力，把工具(ju)管(guan)(guan)(guan)或(huo)掘進機從工作井(jing)內(nei)穿過土(tu)層(ceng)一直推(tui)到接收井(jing)內(nei)吊起。與此同時，也(ye)就(jiu)把緊隨工具(ju)管(guan)(guan)(guan)或(huo)掘進機后(hou)的管(guan)(guan)(guan)道埋設在兩井(jing)之間(jian)，以期實現非開(kai)挖敷設地(di)(di)下管(guan)(guan)(guan)道的施(shi)工方法。

頂(ding)管施工廠家(jia)(jia)(jia)在現有的(de)競爭(zheng)格(ge)局(ju)之下(xia)，生(sheng)存環境是相(xiang)對(dui)困難的(de)，一(yi)方面(mian)，頂(ding)管施工廠家(jia)(jia)(jia)面(mian)對(dui)同質(zhi)化的(de)產品、消(xiao)費(fei)理念的(de)改變等眾多因(yin)素影響，發展(zhan)策略需適時而變；另一(yi)方面(mian)，國外品牌(pai)進(jin)駐國內頂(ding)管施工市場，占(zhan)據部分市場份額，加劇(ju)了廠家(jia)(jia)(jia)的(de)競爭(zheng)壓力，因(yin)此，對(dui)于頂(ding)管施工廠家(jia)(jia)(jia)來(lai)說，加強技術(shu)創新能力才是突圍(wei)的(de)關鍵。