擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)基施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰土擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，環保擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，水泥(ni)土擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，素(su)土擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，夯(hang)擴擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，沉管擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，強夯(hang)地基施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，碎石(shi)擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)(ji)密(mi)螺紋(wen)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，軟土地基施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰土樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，我公(gong)司(si)主營：擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)工(gong)(gong)(gong)(gong)程

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樁基施工(gong)公(gong)司樁基常見問(wen)題及(ji)處理方(fang)法

一、護筒冒水

護筒的主要作用是防止孔(kong)壁(bi)坍塌，為鉆(zhan)孔(kong)成功奠定基(ji)礎(chu)。除此之(zhi)外，它(ta)還(huan)有(you)隔(ge)離地表水、保(bao)護孔(kong)口(kou)地面、固(gu)定樁孔(kong)位置和鉆(zhan)頭導向等(deng)作用。一旦護筒冒(mao)水，極易引發塌孔(kong)，也會造(zao)成護筒傾(qing)斜、位移及周圍地面下沉，后續工作將無法進行(xing)。

所以必(bi)須究其原因，電(dian)廠水(shui)泥土擠密樁施工(gong)，找到處理(li)方法：

要(yao)選擇堅(jian)固耐用的護筒(tong)。

第二，護筒的埋設要(yao)深淺得宜，四周土要(yao)分層(ceng)夯(hang)實，土質量一(yi)般選(xuan)擇(ze)含(han)水量適當的粘土。

第三，鉆頭(tou)起落時，容易碰撞(zhuang)護(hu)筒，造成漏水(shui)。因(yin)此鉆孔(kong)時鉆頭(tou)必(bi)須對好中線及垂(chui)直(zhi)度(du)，并壓好護(hu)筒。

第四，鉆(zhan)孔中(zhong)遇有透水(shui)性(xing)強或地下水(shui)流動(dong)(dong)的地層，也容易導致護筒冒水(shui)。遇此情(qing)況，可增加護筒沉埋(mai)深度，采取加大泥(ni)漿比重，倒(dao)入粘土(tu)慢(man)速轉動(dong)(dong)，用沖(chong)擊法鉆(zhan)孔時，還可填入片石、碎卵石土(tu)，反復沖(chong)擊增強護壁。

總之，為防止護(hu)筒冒水，我(wo)們(men)必須做(zuo)到事(shi)(shi)前準備充足，事(shi)(shi)中及時發現問題及時處理(li)，事(shi)(shi)后總結經驗，將事(shi)(shi)故發生率減小(xiao)到低，降低工程成本。

二、塌孔、埋鉆

鉆孔是一道關鍵工序， 塌孔、埋鉆是容(rong)易(yi)出現(xian)的事故。一般(ban)在鉆進過(guo)程中(zhong)，如發現(xian)排出的泥漿中(zhong)不(bu)斷出現(xian)氣泡，或(huo)泥漿突然漏失，則表(biao)示有孔壁坍陷(xian)的跡象(xiang)。

擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)，灰土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，環保(bao)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，水(shui)泥(ni)土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，素土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，夯擴擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，沉管擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，強(qiang)夯地基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)，碎石擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，擠(ji)密(mi)(mi)(mi)螺紋(wen)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，軟土(tu)地基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)，灰土(tu)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，我公司主營(ying)：擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)(zhuang)工(gong)(gong)程

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膠結法施工(gong)記錄要求：

1）高壓(ya)噴射注(zhu)漿(jiang)地(di)基、水(shui)泥土攪拌樁(zhuang)地(di)基在方案確(que)定(ding)后應進行現場(chang)試樁(zhuang)試驗，并(bing)通過試驗性施(shi)(shi)工或根(gen)據工程經驗確(que)定(ding)施(shi)(shi)工參(can)數及控樁(zhuang)標準(zhun)，河南水(shui)泥土擠密樁(zhuang)施(shi)(shi)工，并(bing)做好記(ji)錄；

2）高壓(ya)噴射注漿(jiang)地基在施(shi)(shi)(shi)工(gong)(gong)(gong)前應(ying)檢(jian)(jian)(jian)查(cha)水泥、外摻劑等的(de)質(zhi)量(liang)、樁(zhuang)位(wei)、壓(ya)力表(biao)與流量(liang)表(biao)的(de)精度和(he)靈敏(min)度、施(shi)(shi)(shi)工(gong)(gong)(gong)設備的(de)性能等，施(shi)(shi)(shi)工(gong)(gong)(gong)中(zhong)應(ying)檢(jian)(jian)(jian)查(cha)施(shi)(shi)(shi)工(gong)(gong)(gong)參(can)數及(ji)施(shi)(shi)(shi)工(gong)(gong)(gong)程序(xu)，如實(shi)記錄(lu)各(ge)項參(can)數和(he)出現的(de)異(yi)常現象，施(shi)(shi)(shi)工(gong)(gong)(gong)記錄(lu)，樁(zhuang)體質(zhi)量(liang)及(ji)承載(zai)力檢(jian)(jian)(jian)驗應(ying)在施(shi)(shi)(shi)工(gong)(gong)(gong)結束后28d進行；

3）水(shui)(shui)(shui)泥土攪(jiao)拌(ban)(ban)樁(zhuang)(zhuang)地基施(shi)工(gong)(gong)(gong)(gong)前(qian)應檢(jian)查水(shui)(shui)(shui)泥及(ji)(ji)外(wai)摻劑的(de)(de)質量(liang)、樁(zhuang)(zhuang)位(wei)、攪(jiao)拌(ban)(ban)機工(gong)(gong)(gong)(gong)作性能及(ji)(ji)各(ge)種計量(liang)設(she)備完好程度(du)，水(shui)(shui)(shui)泥土擠密樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)(gong)單(dan)位(wei)，施(shi)工(gong)(gong)(gong)(gong)中(zhong)應檢(jian)查機頭提升速度(du)、噴漿(jiang)時間、復攪(jiao)次數、水(shui)(shui)(shui)泥漿(jiang)或水(shui)(shui)(shui)泥注入量(liang)、攪(jiao)拌(ban)(ban)樁(zhuang)(zhuang)的(de)(de)長(chang)度(du)及(ji)(ji)標高(gao)，施(shi)工(gong)(gong)(gong)(gong)記(ji)錄(lu)，攪(jiao)拌(ban)(ban)深度(du)記(ji)錄(lu)誤差(cha)(cha)不得(de)大于(yu)50mm，時間記(ji)錄(lu)誤差(cha)(cha)不得(de)大于(yu)5s，施(shi)工(gong)(gong)(gong)(gong)結束后應檢(jian)查樁(zhuang)(zhuang)體強度(du)、樁(zhuang)(zhuang)體直徑及(ji)(ji)地基承載力，強度(du)檢(jian)驗(yan)應取90d齡期的(de)(de)試件。

各(ge)類地基處理的取樣試(shi)驗按有關規范的要求(qiu)執行。

擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)基施工(gong)(gong)(gong)(gong)，灰土(tu)擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，環(huan)保擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，廠(chang)房(fang)水(shui)泥土(tu)擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，水(shui)泥土(tu)擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，素土(tu)擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，夯(hang)擴(kuo)擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，沉管擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，強(qiang)夯(hang)地基施工(gong)(gong)(gong)(gong)，碎石(shi)擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，擠(ji)(ji)密(mi)(mi)螺(luo)紋樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，軟(ruan)土(tu)地基施工(gong)(gong)(gong)(gong)，灰土(tu)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，我公司主營：擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)施工(gong)(gong)(gong)(gong)，擠(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)工(gong)(gong)(gong)(gong)程

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振(zhen)沖法(fa)(fa)。在軟土地(di)基(ji)(ji)中應用(yong)振(zhen)沖法(fa)(fa)，就(jiu)是(shi)在地(di)基(ji)(ji)中嵌入一(yi)(yi)根(gen)根(gen)砂(sha)石樁柱(zhu)，形成一(yi)(yi)種復合地(di)基(ji)(ji)，這種地(di)基(ji)(ji)的承載力標準應根(gen)據現場復合地(di)基(ji)(ji)荷(he)載試驗確定。振(zhen)沖法(fa)(fa)就(jiu)是(shi)利用(yong)振(zhen)沖器(qi)的振(zhen)動(dong)力和水沖作用(yong)形成連(lian)續的孔洞，直至設(she)計(ji)的加固深度。

渣土(tu)(tu)樁(zhuang)(zhuang)法。在加(jia)(jia)固過(guo)程(cheng)中(zhong)，由于重(zhong)錘(chui)(chui)的(de)沖擊能造成(cheng)(cheng)一(yi)系列壓縮(suo)波，使(shi)(shi)土(tu)(tu)體(ti)(ti)(ti)內(nei)出(chu)現排(pai)水網絡，土(tu)(tu)的(de)滲透性(xing)驟然增(zeng)大，孔(kong)(kong)隙水迅速(su)(su)排(pai)出(chu)，孔(kong)(kong)隙壓力很快消散，從(cong)而(er)產生瞬時沉降，使(shi)(shi)土(tu)(tu)體(ti)(ti)(ti)壓密(mi)，強(qiang)度提高(gao);同時重(zhong)錘(chui)(chui)的(de)沖擊作(zuo)用使(shi)(shi)填料(liao)向(xiang)(xiang)夯擊方(fang)向(xiang)(xiang)和側(ce)向(xiang)(xiang)擠(ji)密(mi)，從(cong)而(er)對其(qi)周(zhou)圍的(de)土(tu)(tu)體(ti)(ti)(ti)產生擠(ji)密(mi)加(jia)(jia)固作(zuo)用，形成(cheng)(cheng)一(yi)個自內(nei)向(xiang)(xiang)外的(de)擠(ji)密(mi)圈。在擠(ji)密(mi)過(guo)程(cheng)中(zhong)，周(zhou)圍土(tu)(tu)體(ti)(ti)(ti)的(de)孔(kong)(kong)隙水壓力隨(sui)之，形成(cheng)(cheng)超靜(jing)孔(kong)(kong)隙水壓力。根據巴倫固結(jie)原理因為固結(jie)時間與(yu)(yu)排(pai)水距(ju)離的(de)平(ping)方(fang)成(cheng)(cheng)正比(bi)，所以，增(zeng)加(jia)(jia)排(pai)水途徑，縮(suo)短排(pai)水距(ju)離，才能加(jia)(jia)速(su)(su)軟土(tu)(tu)固結(jie)，提高(gao)地(di)基(ji)承載力。加(jia)(jia)固柱體(ti)(ti)(ti)本身與(yu)(yu)軟基(ji)有不同強(qiang)度，它既是軟土(tu)(tu)固結(jie)的(de)排(pai)水體(ti)(ti)(ti)，又(you)是基(ji)礎的(de)渣土(tu)(tu)樁(zhuang)(zhuang)。渣土(tu)(tu)樁(zhuang)(zhuang)和擠(ji)密(mi)后的(de)地(di)基(ji)土(tu)(tu)共同組成(cheng)(cheng)復合地(di)基(ji)，從(cong)而(er)提高(gao)地(di)基(ji)強(qiang)度并(bing)減(jian)小地(di)基(ji)變形。