擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)基施(shi)(shi)(shi)工(gong)，灰(hui)土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，環(huan)保擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，水泥土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，素土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，山西灰(hui)土(tu)(tu)擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)報價，夯擴擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，沉管擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，強(qiang)夯地基施(shi)(shi)(shi)工(gong)，碎(sui)石擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，擠(ji)(ji)(ji)密(mi)(mi)(mi)螺(luo)紋樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，軟土(tu)(tu)地基施(shi)(shi)(shi)工(gong)，灰(hui)土(tu)(tu)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，我公司主營(ying)：擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)，擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)工(gong)程

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樁基(ji)施工公(gong)司樁基(ji)常(chang)見問題及處(chu)理方法

一、護筒冒水

護(hu)筒的主(zhu)要作(zuo)用是防止孔(kong)壁坍塌，山西灰(hui)土擠密樁(zhuang)施工方案，為(wei)鉆(zhan)孔(kong)成功奠(dian)定基礎。除此之外，它還有隔(ge)離地(di)表水(shui)、保護(hu)孔(kong)口地(di)面(mian)、固定樁(zhuang)孔(kong)位置和鉆(zhan)頭(tou)導向等作(zuo)用。一旦護(hu)筒冒水(shui)，極易引(yin)發塌孔(kong)，也(ye)會(hui)造(zao)成護(hu)筒傾(qing)斜、位移及周圍地(di)面(mian)下沉(chen)，后(hou)續工作(zuo)將(jiang)無法進行(xing)。

所以必須究其原(yuan)因，找到處理方法(fa)：

要選擇堅固耐(nai)用的(de)護(hu)筒。

第二(er)，護(hu)筒(tong)的(de)(de)埋設要深(shen)淺得宜，四周土(tu)要分層夯實，土(tu)質量(liang)一般選擇含水量(liang)適當的(de)(de)粘土(tu)。

第三，鉆(zhan)(zhan)頭起落時，容易碰撞(zhuang)護筒，造成(cheng)漏水。因此鉆(zhan)(zhan)孔時鉆(zhan)(zhan)頭必須對好中線及垂(chui)直度，并壓(ya)好護筒。

第四，鉆孔(kong)中遇有透(tou)水(shui)性強或地(di)下(xia)水(shui)流(liu)動(dong)的地(di)層，也容易導(dao)致護(hu)筒冒水(shui)。遇此情(qing)況，可增加護(hu)筒沉(chen)埋深度，采(cai)取(qu)加大泥漿比重，倒(dao)入(ru)粘土慢速轉動(dong)，用沖擊(ji)法鉆孔(kong)時，還可填入(ru)片石(shi)、碎(sui)卵石(shi)土，反復沖擊(ji)增強護(hu)壁。

總之，為防止護筒(tong)冒水(shui)，我們必須(xu)做(zuo)到事(shi)前準備(bei)充(chong)足，事(shi)中(zhong)及時(shi)發(fa)現問(wen)題及時(shi)處(chu)理，事(shi)后總結經驗，將事(shi)故發(fa)生(sheng)率減小到低(di)，降(jiang)低(di)工程成本。

二、塌孔、埋鉆

鉆(zhan)孔(kong)是一道(dao)關鍵工序， 塌孔(kong)、埋(mai)鉆(zhan)是容(rong)易出現的事故。一般在鉆(zhan)進過程中(zhong)，如發現排(pai)出的泥漿中(zhong)不斷出現氣泡，或(huo)泥漿突(tu)然漏失，則表示有孔(kong)壁坍陷的跡象。

擠(ji)密(mi)(mi)樁(zhuang)(zhuang)基施(shi)工(gong)(gong)(gong)，灰土(tu)(tu)擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，環保擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，水泥(ni)土(tu)(tu)擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，素土(tu)(tu)擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，夯擴擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，沉管擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，強夯地基施(shi)工(gong)(gong)(gong)，碎石(shi)擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，擠(ji)密(mi)(mi)螺紋樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，鉆孔(kong)灌注(zhu)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，軟(ruan)土(tu)(tu)地基施(shi)工(gong)(gong)(gong)，灰土(tu)(tu)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，我公司主營：擠(ji)密(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，擠(ji)密(mi)(mi)樁(zhuang)(zhuang)工(gong)(gong)(gong)程

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強夯(hang)工程時遇到塌陷問(wen)題(ti)應該如何(he)處理？

強夯(hang)(hang)(hang)施(shi)(shi)(shi)工的(de)過程中(zhong)會(hui)(hui)遇許多的(de)問題(ti)，強夯(hang)(hang)(hang)施(shi)(shi)(shi)工團隊都(dou)會(hui)(hui)根據具體情況找到到相對應的(de)預防措施(shi)(shi)(shi)和解決方案，今(jin)天跟(gen)大家分享的(de)一下如果在強夯(hang)(hang)(hang)過程中(zhong)遇到塌陷問題(ti)應當如何快(kuai)速(su)找到原(yuan)因并(bing)進行解決。可(ke)能會(hui)(hui)出現(xian)的(de)原(yuan)因以及應對處(chu)理方法：

1、中控式塌陷

強夯施工

一(yi)般(ban)造成這種原(yuan)因(yin)的塌陷(xian)多(duo)半是(shi)個本(ben)身的地質是(shi)有關系的，例如一(yi)些(xie)丘陵地勢，這類地形(xing)的土層比較疏松，切雨(yu)水較多(duo)，經(jing)(jing)過多(duo)年的雨(yu)水沖刷，表面上看見(jian)起來雖然沒什么變化，但(dan)是(shi)地層里部會有部分的空洞(dong)部分，在此上進(jin)行強夯施工后(hou)，土質就會造成坍塌，這種塌陷(xian)解決辦法(fa)也非常的簡單，前期做好測量(liang)，經(jing)(jing)過施工后(hou)回填土進(jin)行解決就可以了。

2 、水流沖刷塌陷

這個處(chu)理辦法很簡單，但是速度要快。盡快找到水流的就(jiu)可(ke)以的，截(jie)住后積水用水泵(beng)抽(chou)掉就(jiu)行。

3 、地質復雜

這種情(qing)況其實也(ye)是比較的多見(jian)，例如一(yi)些碎石(shi)(shi)地(di)(di)帶，中間摻雜著一(yi)些大塊(kuai)的石(shi)(shi)頭，需要去除(chu)石(shi)(shi)頭之后(hou)再進(jin)(jin)行強夯。這樣(yang)也(ye)會(hui)造成一(yi)定(ding)的塌陷。處理(li)方式(shi)就(jiu)是回(hui)(hui)填土的時候盡(jin)量使用一(yi)些和本地(di)(di)土質(zhi)接近的方式(shi)進(jin)(jin)行回(hui)(hui)填。

擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)基施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰(hui)(hui)土(tu)(tu)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，環保擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，水泥土(tu)(tu)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，素土(tu)(tu)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，山西灰(hui)(hui)土(tu)(tu)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，夯擴(kuo)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，沉管(guan)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，強夯地(di)基施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，碎石擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)螺紋樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，軟土(tu)(tu)地(di)基施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰(hui)(hui)土(tu)(tu)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，我公司主營：擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，山西灰(hui)(hui)土(tu)(tu)擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)加固(gu)，擠(ji)(ji)(ji)密(mi)樁(zhuang)(zhuang)(zhuang)工(gong)(gong)(gong)(gong)程(cheng)

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避(bi)免鉆孔(kong)灌注(zhu)樁護筒底部孔(kong)壁坍(tan)塌措(cuo)施

　1、質(zhi)量(liang)問(wen)題及現(xian)象

　孔壁坍塌；鉆機傾斜。

　2、原因分析

　1）護(hu)筒(tong)(tong)底(di)部及周(zhou)圍未用粘土(tu)回填或夯實不足，在(zai)鉆進過(guo)程(cheng)中(zhong)或灌注過(guo)程(cheng)中(zhong)泥漿(jiang)護(hu)筒(tong)(tong)底(di)掏空。

　2）由于提供的地質鉆探(tan)資料不祥，使護筒底產處于淤泥或(huo)砂(sha)層少。

　3）護筒直(zhi)徑(jing)較小。

　4）地表水(shui)滲入(ru)護筒外圍(wei)填土中，造成(cheng)填土松軟。

避免鉆孔(kong)灌注樁護(hu)筒(tong)底部孔(kong)壁(bi)坍塌(ta)措施

　3、預防措施

　1）護(hu)筒底部應(ying)回填至少50cm厚的粘土，當(dang)土質為砂性土時護(hu)筒周圍(wei)0.5-1.0m范圍(wei)內也(ye)應(ying)用粘土回填并夯(hang)實。

　2）根據設計(ji)部(bu)門提供的地質資料(liao)，護(hu)筒底部(bu)應(ying)穿過淤泥(ni)和砂(sha)層。

　3）護筒直(zhi)徑應大于設計孔徑20-30cm（有鉆(zhan)桿(gan)的正反循環鉆(zhan)）、30-40cm（無鉆(zhan)桿(gan)的潛水(shui)電鉆(zhan)或沖擊(ji)鉆(zhan)）。

　4）護筒出漿(jiang)(jiang)孔處應用粘土夯填，同(tong)時應保持出漿(jiang)(jiang)順(shun)利，周圍不得有積水，避免護筒周圍泥土流失，造(zao)成坍(tan)孔。