擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)基施(shi)工(gong)(gong)(gong)(gong)(gong)，灰土擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，環保(bao)擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，水泥土擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，素土擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，夯擴擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，沉管擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，強夯地基施(shi)工(gong)(gong)(gong)(gong)(gong)，碎石擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)螺紋(wen)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，鉆孔灌(guan)注(zhu)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，軟土地基施(shi)工(gong)(gong)(gong)(gong)(gong)，灰土樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，我公司(si)主營：擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)工(gong)(gong)(gong)(gong)(gong)程

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擠密樁施工排水措施

　1、基(ji)坑(keng)施工過程中(zhong)對(dui)地表水(shui)(shui)(shui)(shui)控制，以便進(jin)(jin)行(xing)(xing)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)措施調(diao)整，對(dui)地表滯水(shui)(shui)(shui)(shui)進(jin)(jin)行(xing)(xing)如(ru)下控制：沿基(ji)坑(keng)周(zhou)邊(bian)防(fang)護(hu)欄(lan)處設置一(yi)明排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)溝，為了排(pai)(pai)(pai)除雨季的暴雨突然而(er)來(lai)的明水(shui)(shui)(shui)(shui)，防(fang)止排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)溝泄水(shui)(shui)(shui)(shui)不及，特在(zai)基(ji)坑(keng)一(yi)側(ce)設一(yi)積(ji)水(shui)(shui)(shui)(shui)池，再(zai)通(tong)過抽水(shui)(shui)(shui)(shui)泵及時將積(ji)水(shui)(shui)(shui)(shui)抽至到河邊(bian)進(jin)(jin)行(xing)(xing)排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)，做到有組織排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)，確保排(pai)(pai)(pai)水(shui)(shui)(shui)(shui)暢通(tong)。

　2、基(ji)坑(keng)(keng)排(pai)水(shui)措施(shi)基(ji)坑(keng)(keng)上邊排(pai)水(shui)溝的水(shui)統一排(pai)至基(ji)坑(keng)(keng)周(zhou)邊沉淀池，然后就(jiu)近排(pai)向廠(chang)區(qu)雨水(shui)井內。

　3、基坑降水(shui)措(cuo)施(shi)基坑明水(shui)滲入底板下礫沙層，全(quan)部用深井泵排出，確(que)保基坑無積水(shui)。

擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)(gong)，灰土(tu)擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，環(huan)保(bao)擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，水泥土(tu)擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，素土(tu)擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，夯擴擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，沉(chen)管(guan)擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，強夯地基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)(gong)，碎石擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，擠(ji)(ji)密(mi)螺紋樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，軟土(tu)地基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)(gong)，灰土(tu)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，我公司主營：擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)，擠(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)工(gong)(gong)(gong)程

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為(wei)處理好(hao)孔(kong)壁坍塌、埋鉆的問題，要做到(dao)以下幾(ji)點：

做好泥漿制備工作。

土(tu)(tu)質松散、護筒(tong)(tong)周(zhou)圍未用(yong)粘土(tu)(tu)緊密填封(feng)以(yi)及(ji)護筒(tong)(tong)內水位(wei)不高以(yi)及(ji)鉆(zhan)進(jin)速度過快、空鉆(zhan)時(shi)間過長、成孔后(hou)待灌時(shi)間過長和灌注時(shi)間過長都(dou)會會引(yin)起孔壁坍陷(xian)。因此，在松散易坍的(de)土(tu)(tu)層中，要適當埋深(shen)護筒(tong)(tong)，用(yong)粘土(tu)(tu)密實填封(feng)護筒(tong)(tong)四周(zhou)，使用(yong)的(de)泥(ni)漿，山西擠密樁基施(shi)工方案，提高泥(ni)漿的(de)比(bi)重和粘度，保持護筒(tong)(tong)內泥(ni)漿水位(wei)高于地下(xia)水位(wei)。

當遇到小(xiao)溶(rong)洞(dong)或裂縫時，可能發生孔內泥(ni)(ni)漿均(jun)勻緩慢(man)下降的現象(xiang)。這(zhe)時，可采用(yong)在泥(ni)(ni)漿中加(jia)適量水泥(ni)(ni)，增大泥(ni)(ni)漿比重及其護(hu)壁(bi)效果(guo)。

縮頸，即孔小于設計孔徑，是鉆孔灌注樁常見的(de)質量(liang)問題。

解決縮(suo)頸(jing)問(wen)題要針對其產生的原(yuan)因，找到正確的處理方法：

縮頸的(de)主要(yao)原因(yin)是由于樁周土(tu)體在樁體澆(jiao)注過程中產生的(de)膨脹造成。針對這種(zhong)情況，應采用泥漿，降(jiang)低失(shi)水量。

當(dang)軟土層受地下水(shui)(shui)影響和周邊車輛(liang)振動時，也容易發生縮(suo)頸。這時，可在(zai)軟塑土地層采(cai)用(yong)失(shi)水(shui)(shui)率小的泥漿護(hu)壁，山西擠密樁基(ji)施工報(bao)價(jia)，降(jiang)低失(shi)水(shui)(shui)量。

因鉆(zhan)錘磨損原因造成的縮頸，應及(ji)時焊補鉆(zhan)錘，或在(zai)其(qi)外(wai)側焊接一定數量的合金刀片，在(zai)鉆(zhan)進或起鉆(zhan)時起到掃孔作(zuo)用。

擠(ji)(ji)密樁(zhuang)基施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，灰土擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，環(huan)保(bao)擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，水泥(ni)土擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，素土擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，夯擴(kuo)擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，沉(chen)管擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，強夯地基施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，碎石擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，擠(ji)(ji)密螺紋樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，鉆孔灌注樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，軟土地基施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，灰土樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，我公司主營：擠(ji)(ji)密樁(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)工(gong)(gong)(gong)，擠(ji)(ji)密樁(zhuang)工(gong)(gong)(gong)程

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１ 干振碎石樁(zhuang)的(de)定義和原理

干(gan)振(zhen)碎(sui)石樁是(shi)采用(yong)預(yu)沉導管、重錘振(zhen)動(dong)壓入(ru)工藝施(shi)工的碎(sui)石樁。其(qi)原(yuan)理主要是(shi)振(zhen)密和擠(ji)密松散(san)沙土(tu)(tu)(tu)、粉土(tu)(tu)(tu)、黏性(xing)土(tu)(tu)(tu)、素(su)填土(tu)(tu)(tu)、雜填土(tu)(tu)(tu)等(deng)地基。

２ 原材料要求

碎石樁施(shi)工碎石由巖石或礫石軋制而成，山西擠密(mi)樁基施(shi)工單位(wei)，應(ying)(ying)潔凈、干燥并具有(you)足夠的(de)強(qiang)度和耐磨(mo)耗性，其顆粒(li)(li)形狀應(ying)(ying)具有(you)棱(leng)角，不(bu)得(de)摻有(you)軟質和其他雜質。施(shi)工中采用天然(ran)級配為ｌ ｃｍ～３ ｃｍ的(de)碎石，含泥量小于５％，山西擠密(mi)樁基施(shi)工，并不(bu)得(de)含有(you)大于４ ｃｍ的(de)顆粒(li)(li)。

３ 機械設備的要求

干振(zhen)碎石樁(zhuang)需采(cai)用走管(guan)式(shi)或履帶(dai)式(shi)振(zhen)動成樁(zhuang)機(ji)，內置平底活頁式(shi)樁(zhuang)尖，樁(zhuang)管(guan)ｄ ４２６ ｍｍ，樁(zhuang)管(guan)長度為設(she)(she)計樁(zhuang)長加(jia)３ ｍ，并設(she)(she)有二(er)次(ci)投料口，錘(chui)重(zhong)大于(yu)(yu) ３５ ｋＮ，工(gong)作電流８０ Ａ左右，激振(zhen)力(li)大于(yu)(yu)２８０ ｋＮ，配(pei)備發(fa)電機(ji)功(gong)率大于(yu)(yu)１２０ ｋＷ。