經過多年(nian)的(de)發展，頂(ding)(ding)管技(ji)(ji)術在我國已得到(dao)大量地(di)實(shi)際工(gong)(gong)(gong)程應用，且保(bao)持著高速的(de)增(zeng)長勢頭，無論在技(ji)(ji)術上(shang)(shang)、頂(ding)(ding)管設備(bei)還是施工(gong)(gong)(gong)工(gong)(gong)(gong)藝上(shang)(shang)取得了(le)很大的(de)進步，在某些方(fang)面甚至已達到(dao)了(le)水(shui)平(ping)。頂(ding)(ding)管施工(gong)(gong)(gong)借(jie)助于(yu)主頂(ding)(ding)油缸及管道(dao)間中繼間等(deng)的(de)推力，把(ba)工(gong)(gong)(gong)具(ju)管或(huo)掘進機從(cong)工(gong)(gong)(gong)作井內穿過土層一(yi)直(zhi)推到(dao)接收井內吊起。與(yu)此同(tong)時，也就(jiu)把(ba)緊隨工(gong)(gong)(gong)具(ju)管或(huo)掘進機后的(de)管道(dao)埋設在兩(liang)井之間，以期(qi)實(shi)現非(fei)開(kai)(kai)挖(wa)敷(fu)設地(di)下管道(dao)的(de)施工(gong)(gong)(gong)方(fang)法。非(fei)開(kai)(kai)挖(wa)具(ju)有環保(bao)宜居(ju)等(deng)競(jing)爭優(you)勢。一(yi)個城(cheng)市(shi)(shi)的(de)開(kai)(kai)挖(wa)量超過一(yi)定比例，必(bi)然影(ying)響交通和市(shi)(shi)民正(zheng)(zheng)常生(sheng)活。而非(fei)開(kai)(kai)挖(wa)施工(gong)(gong)(gong)不(bu)阻(zu)礙交通、不(bu)污(wu)染環境(jing)、不(bu)破壞植被、不(bu)影(ying)響周邊(bian)建筑物、不(bu)影(ying)響居(ju)民的(de)一(yi)切(qie)正(zheng)(zheng)常生(sheng)活和工(gong)(gong)(gong)作秩序。

頂(ding)管(guan)直(zhi)徑DN800—4500。通過工(gong)(gong)(gong)(gong)作井把要頂(ding)進的管(guan)子(zi)頂(ding)入接收井內，一個(ge)工(gong)(gong)(gong)(gong)作井內的管(guan)子(zi)可(ke)在地(di)下(xia)(xia)穿行1500米(mi)以上，并(bing)且(qie)(qie)還能曲線(xian)穿行，以繞開(kai)(kai)一些地(di)下(xia)(xia)管(guan)線(xian)或障礙物。頂(ding)管(guan)施工(gong)(gong)(gong)(gong)就是(shi)非開(kai)(kai)挖(wa)施工(gong)(gong)(gong)(gong)方法，是(shi)一種(zhong)不開(kai)(kai)挖(wa)或者少開(kai)(kai)挖(wa)的管(guan)道(dao)(dao)埋設(she)(she)施工(gong)(gong)(gong)(gong)技術。頂(ding)管(guan)法施工(gong)(gong)(gong)(gong)就是(shi)在工(gong)(gong)(gong)(gong)作坑內借助于頂(ding)進設(she)(she)備產生的頂(ding)力，克服管(guan)道(dao)(dao)與周圍(wei)土(tu)壤的摩擦力，非開(kai)(kai)挖(wa)頂(ding)管(guan)施工(gong)(gong)(gong)(gong)隊，將管(guan)道(dao)(dao)按設(she)(she)計的坡(po)度頂(ding)入土(tu)中(zhong)，并(bing)將土(tu)方運走。頂(ding)管(guan)施工(gong)(gong)(gong)(gong)是(shi)繼盾(dun)構施工(gong)(gong)(gong)(gong)之后而發展(zhan)起來的一種(zhong)地(di)下(xia)(xia)管(guan)道(dao)(dao)施工(gong)(gong)(gong)(gong)方法，它不需要開(kai)(kai)挖(wa)面層，并(bing)且(qie)(qie)能夠穿越(yue)公(gong)路、鐵(tie)道(dao)(dao)、河(he)川、地(di)面建筑(zhu)物、地(di)下(xia)(xia)構筑(zhu)物以及各種(zhong)地(di)下(xia)(xia)管(guan)線(xian)等(deng)。

無論(lun)是(shi)各行業部門規劃不(bu)到(dao)位，協調不(bu)好，還(huan)是(shi)基建發展需要，新的(de)地下設施總在(zai)不(bu)斷增(zeng)(zeng)加，這時要么開挖，要么非開挖，必(bi)然(ran)選擇其(qi)一(yi)。經過多年的(de)發展，頂管技(ji)術(shu)在(zai)我國已(yi)得到(dao)大量地實際工程(cheng)應(ying)用，且保持著高速的(de)增(zeng)(zeng)長勢頭，無論(lun)在(zai)技(ji)術(shu)上、頂管設備還(huan)是(shi)施工工藝上取得了很大的(de)進步，在(zai)某些方面甚至已(yi)達到(dao)了水平。前(qian)殼體與前(qian)接(jie)管連(lian)(lian)接(jie)，后殼體與后接(jie)管連(lian)(lian)接(jie)，前(qian)后殼體間(jian)為承插式連(lian)(lian)接(jie)，兩者間(jian)依靠(kao)橡膠止水帶密封，防止管道外水土和漿液倒流入管道內。