文章來(lai)源(yuan)：中國冶金(jin)科(ke)工集團有限公司 發布時間：2016-05-08
5月5日，中國(guo)中冶(ye)所屬中冶(ye)沈勘工程技(ji)術有限公司申請的(de)實用新型專利“長螺旋(xuan)鉆(zhan)孔壓灌(guan)樁嵌巖擴孔鉆(zhan)頭”獲國(guo)家知識(shi)產權局(ju)授權。
該(gai)實用新型專利涉(she)(she)及(ji)(ji)建筑地基(ji)(ji)基(ji)(ji)礎施工(gong)的(de)一(yi)種新鉆(zhan)頭(tou)，特(te)別是涉(she)(she)及(ji)(ji)用于(yu)長螺旋鉆(zhan)壓灌(guan)樁(zhuang)(zhuang)擴(kuo)孔(kong)(kong)(kong)(kong)鉆(zhan)進(jin)(jin)(jin)及(ji)(ji)嵌巖擴(kuo)底(di)鉆(zhan)進(jin)(jin)(jin)鉆(zhan)頭(tou)。目前世界各國樁(zhuang)(zhuang)基(ji)(ji)礎、復合(he)地基(ji)(ji)施工(gong)中，長螺旋鉆(zhan)孔(kong)(kong)(kong)(kong)壓灌(guan)樁(zhuang)(zhuang)以其施工(gong)速度快、質(zhi)(zhi)量好(hao)、無污(wu)染等特(te)點越(yue)來(lai)越(yue)多被工(gong)程界采用。傳統的(de)擴(kuo)孔(kong)(kong)(kong)(kong)、擴(kuo)底(di)鉆(zhan)進(jin)(jin)(jin)技(ji)術只適用于(yu)機(ji)械成(cheng)(cheng)孔(kong)(kong)(kong)(kong)的(de)水下(xia)灌(guan)注樁(zhuang)(zhuang)，并(bing)且成(cheng)(cheng)孔(kong)(kong)(kong)(kong)、擴(kuo)底(di)需二次(ci)完(wan)成(cheng)(cheng)，不(bu)僅施工(gong)速度慢，且容易產(chan)生縮(suo)徑、榻孔(kong)(kong)(kong)(kong)、水下(xia)灌(guan)注斷樁(zhuang)(zhuang)、孔(kong)(kong)(kong)(kong)底(di)沉渣超(chao)標等質(zhi)(zhi)量事故，同時泥漿排放量大，污(wu)染嚴(yan)重(zhong)。而(er)采用長螺旋鉆(zhan)孔(kong)(kong)(kong)(kong)壓灌(guan)樁(zhuang)(zhuang)嵌巖擴(kuo)孔(kong)(kong)(kong)(kong)鉆(zhan)頭(tou)可(ke)一(yi)次(ci)完(wan)成(cheng)(cheng)成(cheng)(cheng)孔(kong)(kong)(kong)(kong)鉆(zhan)進(jin)(jin)(jin)、擴(kuo)孔(kong)(kong)(kong)(kong)、擴(kuo)底(di)、成(cheng)(cheng)樁(zhuang)(zhuang)工(gong)作，不(bu)但成(cheng)(cheng)樁(zhuang)(zhuang)質(zhi)(zhi)量好(hao)、效率(lv)高，同時可(ke)降低直接成(cheng)(cheng)本30%。
該專利技術處于全國先進(jin)(jin)水平，將于近期投入使(shi)用，預計將首(shou)先面向遼(liao)寧(ning)省內的工程(cheng)，待條(tiao)件成熟將向東北地區乃至(zhi)全國進(jin)(jin)行推廣。