根據地(di)質報告，并結(jie)合的(de)施工(gong)(gong)經驗，頂(ding)管(guan)(guan)機(ji)頭(tou)決定(ding)采(cai)用氣壓平(ping)(ping)衡(heng)網格（水沖）式機(ji)頭(tou)進(jin)(jin)行施工(gong)(gong)。該(gai)機(ji)頭(tou)在頂(ding)進(jin)(jin)過程(cheng)中，通過氣壓平(ping)(ping)衡(heng)正面土壓穩定(ding)機(ji)頭(tou)，減少外部(bu)土體對(dui)周(zhou)圍地(di)面的(de)影(ying)響。一節管(guan)(guan)子完成頂(ding)入土層之后，再(zai)下(xia)第二節管(guan)(guan)子繼續頂(ding)進(jin)(jin)。其(qi)原理是借助于(yu)主頂(ding)油缸及管(guan)(guan)道間、中繼間等推(tui)力(li)，把工(gong)(gong)具管(guan)(guan)或(huo)掘(jue)進(jin)(jin)機(ji)從工(gong)(gong)作坑內(nei)穿過土層一直推(tui)進(jin)(jin)到接收(shou)坑內(nei)吊起。管(guan)(guan)道緊隨(sui)工(gong)(gong)具管(guan)(guan)或(huo)掘(jue)進(jin)(jin)機(ji)后，埋設在兩(liang)坑之間。隨(sui)著我(wo)國(guo)經濟持(chi)續穩定(ding)地(di)增長，城市化(hua)進(jin)(jin)程(cheng)的(de)進(jin)(jin)一步加(jia)快，我(wo)國(guo)的(de)地(di)下(xia)管(guan)(guan)線(xian)的(de)需(xu)求量也(ye)在逐年增加(jia)。加(jia)之人(ren)們(men)對(dui)環境保(bao)護意識的(de)增強(qiang)頂(ding)管(guan)(guan)技(ji)(ji)術(shu)(shu)將(jiang)在我(wo)國(guo)地(di)下(xia)管(guan)(guan)線(xian)的(de)施工(gong)(gong)中起到越來(lai)越重要的(de)地(di)位和作用。非開挖技(ji)(ji)術(shu)(shu)的(de)發(fa)展必將(jiang)向(xiang)規(gui)模化(hua)、規(gui)范化(hua) 、國(guo)際化(hua)的(de)方(fang)向(xiang)發(fa)展。

非(fei)開(kai)(kai)挖(wa)具(ju)有環保宜(yi)居等(deng)競爭優勢(shi)。一個城市(shi)的(de)(de)開(kai)(kai)挖(wa)量超過一定比例，必然影(ying)響交(jiao)通(tong)和市(shi)民(min)正常生活。而非(fei)開(kai)(kai)挖(wa)施(shi)(shi)工(gong)(gong)(gong)不阻礙交(jiao)通(tong)、不污染環境(jing)、不破壞植被、不影(ying)響周邊(bian)建筑物、不影(ying)響居民(min)的(de)(de)一切正常生活和工(gong)(gong)(gong)作秩(zhi)序。經過多年的(de)(de)發(fa)展(zhan)，頂(ding)(ding)管(guan)(guan)技術(shu)在(zai)我國已(yi)得(de)到(dao)大量地(di)(di)實(shi)際工(gong)(gong)(gong)程應用，頂(ding)(ding)管(guan)(guan)非(fei)開(kai)(kai)挖(wa)施(shi)(shi)工(gong)(gong)(gong)報價，且保持著高速的(de)(de)增(zeng)長勢(shi)頭，無論在(zai)技術(shu)上、頂(ding)(ding)管(guan)(guan)設備還是施(shi)(shi)工(gong)(gong)(gong)工(gong)(gong)(gong)藝上取得(de)了很大的(de)(de)進步，在(zai)某些方面甚至已(yi)達到(dao)了水平(ping)。地(di)(di)下管(guan)(guan)線是城市(shi)基礎設施(shi)(shi)的(de)(de)重要組成部分(fen)，電纜管(guan)(guan)、上下水管(guan)(guan)網、熱力(li)(動(dong)力(li))管(guan)(guan)道同(tong)地(di)(di)下鐵道一起，被稱(cheng)為城市(shi)的(de)(de)生命線，隨著社會(hui)的(de)(de)發(fa)展(zhan)，地(di)(di)下管(guan)(guan)線的(de)(de)長度持續增(zeng)加。

頂(ding)管(guan)直徑DN800—4500。通(tong)過工(gong)作井(jing)把要(yao)(yao)(yao)頂(ding)進的(de)管(guan)子(zi)(zi)頂(ding)入接收井(jing)內，一(yi)個工(gong)作井(jing)內的(de)管(guan)子(zi)(zi)可在地(di)(di)(di)下(xia)穿行1500米(mi)以(yi)上，并且(qie)還能曲線穿行，以(yi)繞開(kai)一(yi)些地(di)(di)(di)下(xia)管(guan)線或(huo)障礙物。無論是各(ge)行業部門規(gui)劃不到位，協調不好，還是基建發(fa)展需要(yao)(yao)(yao)，新(xin)的(de)地(di)(di)(di)下(xia)設施總在不斷增加，這時(shi)要(yao)(yao)(yao)么開(kai)挖，要(yao)(yao)(yao)么非(fei)開(kai)挖，必然選擇(ze)其一(yi)。根據地(di)(di)(di)質報告，并結(jie)合的(de)施工(gong)經驗，頂(ding)管(guan)機頭(tou)決定采用氣(qi)壓平衡網(wang)格（水沖）式機頭(tou)進行施工(gong)。該機頭(tou)在頂(ding)進過程(cheng)中，通(tong)過氣(qi)壓平衡正面土壓穩定機頭(tou)，減少外部土體(ti)對周圍地(di)(di)(di)面的(de)影響。