擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)基施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，灰土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，環(huan)保擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，水泥土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，素土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，夯擴擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，沉管(guan)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，強夯地(di)基施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，碎石擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)密(mi)(mi)(mi)螺紋樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，鉆孔(kong)灌(guan)注樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，軟土(tu)地(di)基施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，鉆孔(kong)灌(guan)注樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)聯(lian)系電話(hua)，灰土(tu)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，我公司主營(ying)：擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)工(gong)(gong)(gong)(gong)程

我們將為你提供(gong)詳細的(de)流行資(zi)訊，精彩的(de)新聞知識(shi)，介休鉆(zhan)孔灌注樁(zhuang)施(shi)工，讓您(nin)對(dui)產品有更(geng)深的(de)了(le)解(jie)

不(bu)均(jun)勻(yun)(yun)沉降(jiang)(jiang)(jiang)的(de)預防(fang)(fang)(fang)：基坑周(zhou)圍建(jian)(jian)筑(zhu)(zhu)(zhu)物的(de)不(bu)均(jun)勻(yun)(yun)沉降(jiang)(jiang)(jiang)主(zhu)要是由于地(di)(di)(di)下水(shui)位(wei)降(jiang)(jiang)(jiang)低，建(jian)(jian)筑(zhu)(zhu)(zhu)物下面(mian)地(di)(di)(di)基基礎脫水(shui)后(hou)承載(zai)能力(li)降(jiang)(jiang)(jiang)低，在(zai)重力(li)作用下被壓縮、固(gu)結(jie)。為防(fang)(fang)(fang)止此(ci)類不(bu)均(jun)勻(yun)(yun)沉降(jiang)(jiang)(jiang)必須(xu)控制地(di)(di)(di)下水(shui)位(wei)過度、快速降(jiang)(jiang)(jiang)低。通常采取減慢降(jiang)(jiang)(jiang)水(shui)速度、打(da)截滲帷(wei)幕、打(da)井回(hui)灌地(di)(di)(di)下水(shui)等措施。其中(zhong)回(hui)灌地(di)(di)(di)下水(shui)的(de)方案比較簡單有(you)效，只(zhi)需在(zai)建(jian)(jian)筑(zhu)(zhu)(zhu)物與降(jiang)(jiang)(jiang)水(shui)井之間(jian)靠近建(jian)(jian)筑(zhu)(zhu)(zhu)物的(de)地(di)(di)(di)方打(da)井并回(hui)灌地(di)(di)(di)下水(shui)，便可很大程度地(di)(di)(di)防(fang)(fang)(fang)止建(jian)(jian)筑(zhu)(zhu)(zhu)物沉降(jiang)(jiang)(jiang)。

井點施(shi)(shi)工的(de)(de)(de)質(zhi)量：在(zai)井點施(shi)(shi)工的(de)(de)(de)過程中(zhong)(zhong)要(yao)嚴(yan)格控制其質(zhi)量，特別是在(zai)放置濾管(guan)和(he)填充砂石的(de)(de)(de)過程中(zhong)(zhong)，要(yao)防(fang)(fang)止(zhi)井壁塌(ta)土堵塞(sai)(sai)濾管(guan)形(xing)成(cheng)“死井”。同時，正確填充的(de)(de)(de)砂石可(ke)對地(di)下(xia)水進行過濾，防(fang)(fang)止(zhi)排水的(de)(de)(de)過程中(zhong)(zhong)地(di)下(xia)泥(ni)砂被大量抽出，既損害(hai)水泵又容(rong)易堵塞(sai)(sai)管(guan)道(dao)。而且，地(di)下(xia)泥(ni)砂大量流失可(ke)能(neng)導致地(di)面產生過多的(de)(de)(de)沉降甚至于開裂(lie)、坍塌(ta)。

擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)，灰(hui)土擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，環保(bao)擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，水泥土擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，素(su)土擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，夯擴(kuo)擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，沉管擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，鉆(zhan)孔(kong)灌注樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)廠家，強夯地基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)，碎石擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，擠(ji)密(mi)(mi)(mi)(mi)螺紋(wen)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，鉆(zhan)孔(kong)灌注樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，軟土地基(ji)(ji)施(shi)(shi)(shi)工(gong)(gong)，灰(hui)土樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，我公司主營：擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)工(gong)(gong)，擠(ji)密(mi)(mi)(mi)(mi)樁(zhuang)(zhuang)(zhuang)工(gong)(gong)程

我們將(jiang)為你提供詳細的(de)流行資(zi)訊，精彩(cai)的(de)新聞知識(shi)，讓您對產品有(you)更深的(de)了解

為處理好孔壁坍(tan)塌、埋鉆的問題(ti)，要做到以下幾(ji)點：

做好泥漿制備工作。

土(tu)質松散、護(hu)筒周圍未用粘(zhan)(zhan)土(tu)緊密填封(feng)以及(ji)(ji)護(hu)筒內水(shui)(shui)(shui)位(wei)不高以及(ji)(ji)鉆(zhan)進速度(du)過(guo)快、空鉆(zhan)時(shi)間過(guo)長、成孔后待灌時(shi)間過(guo)長和灌注時(shi)間過(guo)長都會會引起孔壁坍陷。因此(ci)，在(zai)松散易坍的土(tu)層(ceng)中，要適當埋(mai)深護(hu)筒，用粘(zhan)(zhan)土(tu)密實填封(feng)護(hu)筒四周，使用的泥(ni)漿(jiang)，提高泥(ni)漿(jiang)的比重和粘(zhan)(zhan)度(du)，保持護(hu)筒內泥(ni)漿(jiang)水(shui)(shui)(shui)位(wei)高于地下水(shui)(shui)(shui)位(wei)。

當遇到小溶洞(dong)或裂縫時(shi)，可(ke)能發生孔內泥漿均勻緩慢下降的(de)現象。這時(shi)，可(ke)采用在泥漿中(zhong)加(jia)適(shi)量水(shui)泥，增大泥漿比重及(ji)其(qi)護壁效(xiao)果。

縮(suo)頸，即(ji)孔小于設(she)計孔徑，是鉆孔灌注樁常見的質量問(wen)題。

解決縮頸問(wen)題要(yao)針對(dui)其產生的(de)原因，找(zhao)到正(zheng)確(que)的(de)處理方法：

縮頸的主要原因(yin)是由于樁(zhuang)(zhuang)周土(tu)體在樁(zhuang)(zhuang)體澆注過(guo)程中產生的膨脹造成。針對這種情況，應采用泥(ni)漿，降低失水量。

當軟(ruan)土層受(shou)地(di)下水影響(xiang)和(he)周邊(bian)車輛振動時(shi)，城市城區鉆孔灌注樁施工，也容易(yi)發生縮(suo)頸。這時(shi)，可(ke)在軟(ruan)塑土地(di)層采用失水率(lv)小的(de)泥漿護(hu)壁，降(jiang)低失水量。

因(yin)鉆(zhan)錘磨損(sun)原因(yin)造成的縮(suo)頸，應及時焊補鉆(zhan)錘，或(huo)在其外側焊接(jie)一定數(shu)量的合金刀片，在鉆(zhan)進或(huo)起鉆(zhan)時起到掃孔作用。

擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)基施(shi)(shi)工(gong)(gong)(gong)，灰土擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，環保擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，水泥(ni)土擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，素土擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，夯擴擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，沉(chen)管擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，強夯地(di)基施(shi)(shi)工(gong)(gong)(gong)，碎石擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)(mi)螺紋樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，鉆孔灌注樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，軟土地(di)基施(shi)(shi)工(gong)(gong)(gong)，灰土樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，我公司主營(ying)：擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)施(shi)(shi)工(gong)(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)(mi)樁(zhuang)工(gong)(gong)(gong)程

我們將為你提(ti)供詳細的(de)流行(xing)資訊，精彩的(de)新聞(wen)知識，讓您對產品有更深的(de)了解

強夯(hang)(hang)(hang)(hang)(hang)(hang)法(fa)處理。強夯(hang)(hang)(hang)(hang)(hang)(hang)法(fa)是利用重錘自由(you)落(luo)下的(de)巨大(da)沖力能(neng)所產沖擊(ji)波反復(fu)夯(hang)(hang)(hang)(hang)(hang)(hang)擊(ji)地(di)基(ji)土(tu)，將夯(hang)(hang)(hang)(hang)(hang)(hang)面以下一定(ding)深度(du)地(di)土(tu)層(ceng)夯(hang)(hang)(hang)(hang)(hang)(hang)實，以提高地(di)基(ji)的(de)承載力和土(tu)體的(de)穩定(ding)性(xing)，降低(di)壓(ya)縮性(xing)。由(you)于夯(hang)(hang)(hang)(hang)(hang)(hang)擊(ji)能(neng)力大(da)，加(jia)(jia)(jia)固(gu)深度(du)也大(da)。對于一般的(de)軟土(tu)地(di)基(ji)加(jia)(jia)(jia)固(gu)有(you)著良好的(de)效(xiao)果。現在常用的(de)強夯(hang)(hang)(hang)(hang)(hang)(hang)技(ji)術(shu)加(jia)(jia)(jia)固(gu)軟土(tu)地(di)基(ji)的(de)方法(fa)有(you):擠密(mi)碎石(shi)樁(zhuang)加(jia)(jia)(jia)夯(hang)(hang)(hang)(hang)(hang)(hang)法(fa)、砂樁(zhuang)加(jia)(jia)(jia)夯(hang)(hang)(hang)(hang)(hang)(hang)法(fa)、真空/堆載預壓(ya)加(jia)(jia)(jia)強夯(hang)(hang)(hang)(hang)(hang)(hang)、強夯(hang)(hang)(hang)(hang)(hang)(hang)碎石(shi)墩。

粉煤灰(hui)應用法。粉煤灰(hui)具有容量小，滲透性好，有較高的(de)靜力抗剪強度，較低的(de)壓縮性，與(yu)石灰(hui)等(deng)堿性物(wu)質(zhi)產生水化反(fan)應后產生凝硬性。根據(ju)軟(ruan)(ruan)土(tu)地基(ji)存(cun)在的(de)弱點，利用粉煤灰(hui)可(ke)處理軟(ruan)(ruan)土(tu)地基(ji)。粉煤灰(hui)應用的(de)主要有二灰(hui)樁，粉煤灰(hui)混凝土(tu)樁，粉煤灰(hui)固結樁等(deng)，與(yu)土(tu)體形(xing)成復合地基(ji)加固深(shen)層軟(ruan)(ruan)土(tu)地基(ji)。

二灰(hui)(hui)(hui)樁法。(1)以(yi)粉(fen)煤灰(hui)(hui)(hui)為(wei)主(zhu)的二灰(hui)(hui)(hui)樁，主(zhu)要是對軟土(tu)地基(ji)產(chan)生(sheng)擠(ji)(ji)密(mi)和置換(huan)作用(yong)。用(yong)于(yu)軟土(tu)地基(ji)加固時，使復合地基(ji)承(cheng)載力(li)較天然地基(ji)承(cheng)載力(li)提高了142%，樁間土(tu)承(cheng)載力(li)提高了46%。(2)以(yi)石(shi)灰(hui)(hui)(hui)為(wei)主(zhu)的石(shi)灰(hui)(hui)(hui)—粉(fen)煤灰(hui)(hui)(hui)樁，配比為(wei)粉(fen)煤灰(hui)(hui)(hui):生(sheng)石(shi)灰(hui)(hui)(hui)=3:7-1:9，主(zhu)要對地基(ji)產(chan)生(sheng)置換(huan)，成孔擠(ji)(ji)密(mi)，膨脹(zhang)擠(ji)(ji)密(mi)，脫(tuo)水擠(ji)(ji)密(mi)和膠凝作用(yong)。