長春水泥管施(shi)(shi)工(gong)(gong)(gong)的(de)(de)三(san)種方法,明挖(wa)法,也叫開(kai)槽施(shi)(shi)工(gong)(gong)(gong)法。施(shi)(shi)工(gong)(gong)(gong)時按測量定線開(kai)挖(wa)溝槽。一(yi)般(ban)中小型直徑的(de)(de)平口水泥(ni)管(guan)道采用(yong)鋼筋(jin)混(hun)凝(ning)土管(guan),大中型直徑。頂(ding)管(guan)法。在檢(jian)查井位置開(kai)挖(wa)工(gong)(gong)(gong)作坑(keng)(keng),面(mian)向(xiang)施(shi)(shi)丁管(guan)段的(de)(de)坑(keng)(keng)留用(yong)枕(zhen)木和(he)(he)鋼板(ban)構(gou)成堅固的(de)(de)后背,其他(ta)面(mian)的(de)(de)坑(keng)(keng)壁(bi)作一(yi)般(ban)支撐。較(jiao)的(de)(de)頂(ding)管(guan)工(gong)(gong)(gong)作坑(keng)(keng),可(ke)以(yi)采用(yong)連續壁(bi)或沉井法施(shi)(shi)工(gong)(gong)(gong)。盾(dun)構(gou)法。盾(dun)構(gou)是一(yi)個(ge)具(ju)有挖(wa)土機具(ju)和(he)(he)頂(ding)進設備的(de)(de)大型工(gong)(gong)(gong)作管(guan)。已襯砌好的(de)(de)管(guan)段作為后座向(xiang)前推(tui)進,推(tui)進后留下的(de)(de)空間再用(yong)砌襯砌壁(bi)面(mian),即(ji)構(gou)成管(guan)身。目前國內大型排水管(guan)道已使(shi)用(yong)盾(dun)構(gou)法施(shi)(shi)工(gong)(gong)(gong)。
溫馨提示:在(zai)地面鋪設水泥管前,專業人員應檢查水泥管是否完好,有(you)無裂縫(feng),小裂縫(feng)可現場修補(bu)。若返廠(chang)水泥出現較大裂縫(feng),應影響(xiang)施工安全(quan)。
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