無砂管水泥管

水泥管(guan)是用水泥跟鋼(gang)筋為材料，運用電線(xian)桿離心力的(de)原理制造的(de)一種(zhong)預置(zhi)管(guan)道。

水(shui)(shui)泥(ni)管(guan)(guan)(guan)(guan)道(dao)(dao)又稱水(shui)(shui)泥(ni)壓(ya)力管(guan)(guan)(guan)(guan)、鋼筋混(hun)凝(ning)土管(guan)(guan)(guan)(guan)，它可以(yi)作為城市建設(she)建基中(zhong)下水(shui)(shui)管(guan)(guan)(guan)(guan)道(dao)(dao)，可以(yi)排污水(shui)(shui)，防汛排水(shui)(shui)，以(yi)及一(yi)(yi)些特殊廠(chang)礦里使用(yong)的上水(shui)(shui)管(guan)(guan)(guan)(guan)和農田機井。一(yi)(yi)般分為：平口(kou)鋼筋混(hun)凝(ning)土水(shui)(shui)泥(ni)管(guan)(guan)(guan)(guan)、柔性企(qi)口(kou)鋼筋混(hun)凝(ning)土水(shui)(shui)泥(ni)管(guan)(guan)(guan)(guan)、承插(cha)口(kou)鋼筋混(hun)凝(ning)土水(shui)(shui)泥(ni)管(guan)(guan)(guan)(guan)、F型鋼承口水(shui)泥管、平(ping)口套環接口水(shui)泥管、企口水(shui)泥管等。

無砂管質量控制

在施工階(jie)段，控制(zhi)的(de)要點就(jiu)是嚴格按照審批通過的(de)“施工組(zu)織(zhi)設(she)計”和“施工方案”進(jin)行施(shi)(shi)工(gong)(gong)(gong)控(kong)制，并做(zuo)好(hao)關鍵工(gong)(gong)(gong)序(xu)工(gong)(gong)(gong)程、隱蔽工(gong)(gong)(gong)程驗(yan)收，閉水試(shi)驗(yan)及涂裝施(shi)(shi)工(gong)(gong)(gong)的(de)(de)質(zhi)量(liang)(liang)(liang)檢(jian)驗(yan)工(gong)(gong)(gong)作。由于頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)工(gong)(gong)(gong)藝的(de)(de)特(te)殊性，在(zai)施(shi)(shi)工(gong)(gong)(gong)過(guo)程中(zhong)，重點做(zuo)好(hao)以下(xia)內(nei)容的(de)(de)控(kong)制；工(gong)(gong)(gong)作井(jing)作為頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)機的(de)(de)工(gong)(gong)(gong)作場地(di)，須滿足頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)過(guo)程中(zhong)結構的(de)(de)穩定(ding)，且截面設(she)計須滿足頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)千斤頂(ding)(ding)(ding)(ding)(ding)(ding)、后背尺寸要(yao)求(qiu)。在(zai)沉(chen)井(jing)施(shi)(shi)工(gong)(gong)(gong)過(guo)程中(zhong)，重點監控(kong)沉(chen)井(jing)的(de)(de)終沉(chen)階段，尤其是在(zai)地(di)質(zhi)條件不好(hao)的(de)(de)情況下(xia)。對(dui)施(shi)(shi)工(gong)(gong)(gong)過(guo)程出現的(de)(de)問題(ti)，應(ying)(ying)及時進(jin)行分析和糾偏(pian)，保(bao)證(zheng)沉(chen)井(jing)下(xia)沉(chen)和干封底的(de)(de)質(zhi)量(liang)(liang)(liang)。在(zai)頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)施(shi)(shi)工(gong)(gong)(gong)前，要(yao)作好(hao)扎扎實(shi)實(shi)的(de)(de)技(ji)術交(jiao)底和交(jiao)底工(gong)(gong)(gong)作。讓所有施(shi)(shi)工(gong)(gong)(gong)人員(yuan)除(chu)了掌(zhang)握頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)操作技(ji)能(neng)和注意事(shi)項外，還應(ying)(ying)掌(zhang)握處置涌水、流砂(sha)等突發事(shi)的(de)(de)方(fang)法。必(bi)須按照設(she)定(ding)的(de)(de)管(guan)(guan)(guan)道中(zhong)心線與頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)工(gong)(gong)(gong)作井(jing)、接(jie)收井(jing)建立地(di)面與地(di)下(xia)測量(liang)(liang)(liang)控(kong)制系統。當頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)頂(ding)(ding)(ding)(ding)(ding)(ding)進(jin)長度(du)較長時，必(bi)須保(bao)證(zheng)通風(feng)(feng)機械的(de)(de)正常運轉(zhuan)，以確保(bao)管(guan)(guan)(guan)內(nei)通風(feng)(feng)良好(hao)，避免(mian)。接(jie)口(kou)頂(ding)(ding)(ding)(ding)(ding)(ding)合時，應(ying)(ying)保(bao)證(zheng)平整對(dui)中(zhong)頂(ding)(ding)(ding)(ding)(ding)(ding)入，橡膠止水圈(quan)應(ying)(ying)均勻擠壓到位，接(jie)口(kou)鋼(gang)套(tao)環或承插(cha)口(kou)管(guan)(guan)(guan)壁密貼(tie)，木墊(dian)板無松動(dong)脫落，接(jie)口(kou)間隙均勻一致(zhi)。頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)出洞(dong)前，必(bi)須進(jin)行以下(xia)的(de)(de)控(kong)制，確保(bao)頂(ding)(ding)(ding)(ding)(ding)(ding)管(guan)(guan)(guan)順利出洞(dong)。A對頂管(guan)整個系統的安裝(zhuang)，單(dan)機調試進行(xing)檢查，并進行(xing)設(she)備聯運調試。B檢(jian)查洞口(kou)橡膠止水圈的安裝是(shi)(shi)否(fou)(fou)牢固，尺寸(cun)是(shi)(shi)否(fou)(fou)準確，是(shi)(shi)否(fou)(fou)能完全封(feng)堵機頭與洞口(kou)空隙。C檢(jian)查洞(dong)(dong)口前方的土體是否正采取(qu)了加固措施，洞(dong)(dong)口前方是否建立(li)了沉降(jiang)監(jian)測。機頭出(chu)洞(dong)(dong)時，頂進操作(zuo)應(ying)謹慎(shen)平穩勻速(su)推進，首節管出(chu)洞(dong)(dong)口后應(ying)立(li)即(ji)開始(shi)均勻壓注觸變泥(ni)漿。在管節出(chu)洞(dong)(dong)10～20m范(fan)圍內，檢(jian)查并(bing)督促施(shi)工員將切土(tu)、出泥、頂(ding)速、土(tu)壓、軸線、標高等施(shi)工參數逐漸調整至正常(chang)狀態。