長春檢查井針對(dui)施工(gong)下管方(fang)式(shi)的介紹(shao)，檢查井(jing)安裝施工(gong)的下管方(fang)式(shi)的選擇，檢查井(jing)安裝施工(gong)，到目(mu)前(qian)為止(zhi)，我(wo)們采用的比較多(duo)的下管方(fang)式(shi)還人工(gong)下管。水泥(ni)檢查井(jing)人工(gong)下管時(shi)，將繩索的一(yi)端(duan)拴固在(zai)地錨(或其它牢固的樹木(mu)(mu)或建(jian)筑(zhu)物上)，拉住繞(rao)過水泥(ni)管的另一(yi)端(duan)，并在(zai)溝邊(bian)斜放(fang)滑木(mu)(mu)至(zhi)溝底，用撬棍(gun)將水泥(ni)管移至(zhi)溝邊(bian)，再慢慢地放(fang)繩，使管沿著滑木(mu)(mu)滾(gun)下。
將長春(chun)水泥(ni)(ni)管(guan)(guan)(guan)(guan)(guan)從地面放入溝槽(cao)內，下(xia)管(guan)(guan)(guan)(guan)(guan)的方法(fa)分為人(ren)工(gong)下(xia)管(guan)(guan)(guan)(guan)(guan)及機(ji)械(xie)下(xia)管(guan)(guan)(guan)(guan)(guan)、集中下(xia)管(guan)(guan)(guan)(guan)(guan)和分散下(xia)管(guan)(guan)(guan)(guan)(guan)、單節下(xia)管(guan)(guan)(guan)(guan)(guan)和組合下(xia)管(guan)(guan)(guan)(guan)(guan)等幾種。下(xia)管(guan)(guan)(guan)(guan)(guan)方法(fa)的選擇可(ke)根據水泥(ni)(ni)管(guan)(guan)(guan)(guan)(guan)口徑的大(da)小、管(guan)(guan)(guan)(guan)(guan)道(dao)長度和重(zhong)(zhong)量、管(guan)(guan)(guan)(guan)(guan)材(cai)和接口強度，溝槽(cao)和現(xian)場情況及擁有的機(ji)械(xie)設備等條件而定(ding)。當管(guan)(guan)(guan)(guan)(guan)徑較(jiao)小、重(zhong)(zhong)量料輕時，一般采用人(ren)工(gong)下(xia)管(guan)(guan)(guan)(guan)(guan)。
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