在廣(guang)州鋼(gang)筋混(hun)凝土頂(ding)管出(chu)洞(dong)之前(qian)，也需要(yao)把控好(hao)，才能(neng)(neng)保(bao)證(zheng)廣(guang)州鋼(gang)筋混(hun)凝土頂(ding)管能(neng)(neng)夠順利(li)出(chu)洞(dong)。安裝頂(ding)管的(de)(de)整個(ge)系統并(bing)進(jin)(jin)行(xing)的(de)(de)檢查(cha)(cha)并(bing)進(jin)(jin)行(xing)調試(shi)，確保(bao)能(neng)(neng)正常(chang)運(yun)行(xing);認真檢查(cha)(cha)洞(dong)口橡膠止水圈(quan)的(de)(de)情況，河(he)源混(hun)凝土頂(ding)管，是否已(yi)經(jing)安裝牢(lao)固(gu)，混(hun)凝土頂(ding)管生產廠商(shang)，能(neng)(neng)夠封(feng)堵縫隙(xi);針對洞(dong)口前(qian)方的(de)(de)土體也需要(yao)好(hao)好(hao)檢查(cha)(cha)，確認已(yi)經(jing)做了加固(gu)的(de)(de)措施，并(bing)建立了沉降的(de)(de)檢測(ce)。

混凝土頂管的應用還是非常廣泛的，尤其是可以在一些工程建設以及農田灌溉中得到應用，混凝土頂管生產廠家，尤其是可以用來進行一定的排水，當前的二級混凝土排水管，也同樣能有不錯的應用，主要還是因為這樣的排水管會有一定的性能優勢。

企口(kou)式鋼筋混凝土管(guan)(guan)(guan)用于頂(ding)進施工(gong)(gong)(gong)時(shi)，可(ke)以承受頂(ding)力(li)(li)的(de)(de)管(guan)(guan)(guan)壁(bi)厚度約為(wei)管(guan)(guan)(guan)壁(bi)實際厚度的(de)(de)一(yi)半，在施工(gong)(gong)(gong)過程(cheng)中，由(you)于單位(wei)面積上(shang)所承受的(de)(de)應(ying)力(li)(li)過大，很容易使管(guan)(guan)(guan)子端(duan)面混凝土被壓(ya)碎。目前(qian)在上(shang)海地區，已很少采用以上(shang)兩種接口(kou)形式的(de)(de)管(guan)(guan)(guan)材作為(wei)頂(ding)進施工(gong)(gong)(gong)用管(guan)(guan)(guan)。

鋼(gang)(gang)承(cheng)(cheng)口(kou)(kou)鋼(gang)(gang)筋(jin)混(hun)凝(ning)土(tu)管(guan)(guan)是一種(zhong)較(jiao)理想的(de)管(guan)(guan)型，管(guan)(guan)子端(duan)面(mian)可承(cheng)(cheng)受頂(ding)力的(de)面(mian)積大，鋼(gang)(gang)承(cheng)(cheng)口(kou)(kou)尺寸(cun)易控制，圓度好，安裝(zhuang)方(fang)便，由于鋼(gang)(gang)承(cheng)(cheng)口(kou)(kou)的(de)鋼(gang)(gang)套與混(hun)凝(ning)土(tu)連成(cheng)一體，克服了(le)雙插口(kou)(kou)鋼(gang)(gang)筋(jin)混(hun)凝(ning)土(tu)管(guan)(guan)在頂(ding)進時(shi)砂、土(tu)易進入鋼(gang)(gang)套環(huan)與混(hun)凝(ning)土(tu)管(guan)(guan)縫隙的(de)缺陷。目(mu)前，在采用(yong)頂(ding)進施工的(de)排水管(guan)(guan)道工程(cheng)中，已廣泛使用(yong)鋼(gang)(gang)承(cheng)(cheng)口(kou)(kou)鋼(gang)(gang)筋(jin)混(hun)凝(ning)土(tu)管(guan)(guan)。

頂管施工工藝

頂(ding)(ding)(ding)管(guan)(guan)施(shi)工(gong)(gong)技術是一種(zhong)管(guan)(guan)道(dao)鋪裝技術，無需開挖(wa)地(di)面，鋼筋混凝土(tu)頂(ding)(ding)(ding)管(guan)(guan)廠家，有具大推力的(de)(de)(de)液(ye)壓千(qian)斤頂(ding)(ding)(ding)可用(yong)(yong)在有遙控裝置的(de)(de)(de)頂(ding)(ding)(ding)管(guan)(guan)掘進機的(de)(de)(de)后(hou)方(fang)，使掘進機及(ji)緊隨其后(hou)的(de)(de)(de)管(guan)(guan)道(dao)穿(chuan)(chuan)越(yue)土(tu)層(ceng)，達到(dao)預先設計的(de)(de)(de)位置上(shang)，這就(jiu)稱(cheng)為頂(ding)(ding)(ding)管(guan)(guan)工(gong)(gong)程(cheng)。挖(wa)掘發生(sheng)在頂(ding)(ding)(ding)管(guan)(guan)機的(de)(de)(de)前方(fang)，被挖(wa)掘物(wu)質通(tong)過泥漿(jiang)循(xun)環系統(tong)用(yong)(yong)泵排(pai)出，到(dao)達地(di)表。頂(ding)(ding)(ding)管(guan)(guan)施(shi)工(gong)(gong)的(de)(de)(de)基本原(yuan)理為：從(cong)地(di)面開挖(wa)兩(liang)個基坑井(jing)，然后(hou)管(guan)(guan)節(jie)從(cong)工(gong)(gong)作(zuo)井(jing)安放，通(tong)過主(zhu)頂(ding)(ding)(ding)千(qian)斤頂(ding)(ding)(ding)或(huo)中繼間的(de)(de)(de)頂(ding)(ding)(ding)推機械的(de)(de)(de)頂(ding)(ding)(ding)進，推動管(guan)(guan)節(jie)從(cong)工(gong)(gong)作(zuo)井(jing)預留口(kou)穿(chuan)(chuan)出，穿(chuan)(chuan)越(yue)土(tu)層(ceng)到(dao)達接收井(jing)的(de)(de)(de)預留口(kou)邊，然后(hou)通(tong)過接收井(jing)的(de)(de)(de)預留口(kou)穿(chuan)(chuan)出，形(xing)成管(guan)(guan)道(dao)的(de)(de)(de)施(shi)工(gong)(gong)。混凝土(tu)頂(ding)(ding)(ding)管(guan)(guan)