擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)基施(shi)(shi)(shi)(shi)工(gong)(gong)，灰土(tu)擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，環保擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，水泥土(tu)擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，素土(tu)擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，夯擴擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，沉管擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，強夯地基施(shi)(shi)(shi)(shi)工(gong)(gong)，碎石擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)螺紋(wen)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，鉆孔灌注樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，軟土(tu)地基施(shi)(shi)(shi)(shi)工(gong)(gong)，灰土(tu)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，我公司主營：擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)施(shi)(shi)(shi)(shi)工(gong)(gong)，擠(ji)(ji)(ji)密(mi)(mi)樁(zhuang)(zhuang)(zhuang)(zhuang)工(gong)(gong)程

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超聲成(cheng)孔檢測原理及檢測方法

成孔(kong)(kong)(kong)質(zhi)量(liang)檢測(ce)包(bao)括孔(kong)(kong)(kong)徑、孔(kong)(kong)(kong)深、垂直度(du)、成渣厚度(du)等，利用(yong)超(chao)(chao)聲成孔(kong)(kong)(kong)質(zhi)量(liang)檢測(ce)儀進行灌注樁孔(kong)(kong)(kong)徑、孔(kong)(kong)(kong)深、孔(kong)(kong)(kong)壁垂直度(du)檢測(ce)。超(chao)(chao)聲成孔(kong)(kong)(kong)質(zhi)量(liang)檢測(ce)儀由主機、超(chao)(chao)聲探頭、深度(du)測(ce)量(liang)裝置和提升機構組(zu)成，測(ce)量(liang)孔(kong)(kong)(kong)徑、孔(kong)(kong)(kong)深、垂直度(du)的(de)原理(li)

檢測原理

利用超聲(sheng)成孔(kong)(kong)(kong)(kong)質量檢(jian)(jian)測(ce)儀進行(xing)灌(guan)注(zhu)樁(zhuang)(zhuang)孔(kong)(kong)(kong)(kong)徑(jing)、垂(chui)直度(du)(du)(du)檢(jian)(jian)測(ce)。超聲(sheng)探頭(tou)在設備的(de)(de)(de)(de)(de)控制(zhi)下(xia)，由孔(kong)(kong)(kong)(kong)口勻速降低(di)，深(shen)度(du)(du)(du)檢(jian)(jian)測(ce)設備測(ce)取探頭(tou)放入的(de)(de)(de)(de)(de)深(shen)度(du)(du)(du)并傳(chuan)至主機。因(yin)為泥漿(jiang)聲(sheng)阻抗低(di)于(yu)土層和巖石結構的(de)(de)(de)(de)(de)聲(sheng)阻抗，超聲(sheng)波(bo)(bo)(bo)基(ji)本(ben)由孔(kong)(kong)(kong)(kong)壁(bi)形成全反(fan)射(she)，山西(xi)灰(hui)土擠密樁(zhuang)(zhuang)施工(gong)方(fang)(fang)案，反(fan)射(she)波(bo)(bo)(bo)通過(guo)泥漿(jiang)傳(chuan)遞后讓換能(neng)器采集，反(fan)射(she)波(bo)(bo)(bo)抵達的(de)(de)(de)(de)(de)時(shi)間(jian)就是(shi)(shi)(shi)超聲(sheng)波(bo)(bo)(bo)在孔(kong)(kong)(kong)(kong)洞泥漿(jiang)內(nei)的(de)(de)(de)(de)(de)傳(chuan)遞時(shi)間(jian)t，即聲(sheng)時(shi)。檢(jian)(jian)測(ce)探頭(tou)上(shang)安(an)裝4組(zu)換能(neng)器，4組(zu)探頭(tou)呈正(zheng)交十字檢(jian)(jian)測(ce)鉆孔(kong)(kong)(kong)(kong)兩個角(jiao)度(du)(du)(du)的(de)(de)(de)(de)(de)孔(kong)(kong)(kong)(kong)壁(bi)剖面。檢(jian)(jian)測(ce)探頭(tou)兩個角(jiao)度(du)(du)(du)相(xiang)反(fan)的(de)(de)(de)(de)(de)換能(neng)器到(dao)孔(kong)(kong)(kong)(kong)壁(bi)的(de)(de)(de)(de)(de)間(jian)距是(shi)(shi)(shi)l1、l2，測(ce)得聲(sheng)波(bo)(bo)(bo)在路徑(jing)l1、l2上(shang)的(de)(de)(de)(de)(de)往返(fan)傳(chuan)播時(shi)間(jian)分別為t1、t2，假如泥漿(jiang)的(de)(de)(de)(de)(de)聲(sheng)波(bo)(bo)(bo)速度(du)(du)(du)為c（c可通過(guo)實測(ce)得到(dao)那么有l1=ct1/2、l2=ct2/2，樁(zhuang)(zhuang)孔(kong)(kong)(kong)(kong)于(yu)該斷面檢(jian)(jian)測(ce)的(de)(de)(de)(de)(de)孔(kong)(kong)(kong)(kong)徑(jing)就是(shi)(shi)(shi)D=l1+l2+d，山西(xi)灰(hui)土擠密樁(zhuang)(zhuang)施工(gong)聯系方(fang)(fang)式(shi)，其中，d是(shi)(shi)(shi)兩角(jiao)度(du)(du)(du)相(xiang)反(fan)換能(neng)器的(de)(de)(de)(de)(de)接收面路程。則基(ji)于(yu)所檢(jian)(jian)查的(de)(de)(de)(de)(de)樁(zhuang)(zhuang)孔(kong)(kong)(kong)(kong)壁(bi)剖面圖能(neng)了解樁(zhuang)(zhuang)孔(kong)(kong)(kong)(kong)垂(chui)直性。

擠(ji)(ji)密(mi)樁基施(shi)(shi)(shi)工，灰(hui)土擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，環保擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，水(shui)泥土擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，素土擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，夯擴擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，沉管擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，強夯地(di)基施(shi)(shi)(shi)工，碎石(shi)擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，擠(ji)(ji)密(mi)螺紋樁施(shi)(shi)(shi)工，鉆孔灌注樁施(shi)(shi)(shi)工，軟土地(di)基施(shi)(shi)(shi)工，灰(hui)土樁施(shi)(shi)(shi)工，我公(gong)司主營：擠(ji)(ji)密(mi)樁施(shi)(shi)(shi)工，擠(ji)(ji)密(mi)樁工程

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不均(jun)勻沉(chen)(chen)降(jiang)(jiang)的預防(fang)：基(ji)(ji)坑(keng)周圍(wei)建(jian)筑(zhu)(zhu)(zhu)(zhu)物(wu)(wu)(wu)(wu)的不均(jun)勻沉(chen)(chen)降(jiang)(jiang)主要(yao)是(shi)由(you)于地下(xia)水(shui)位(wei)降(jiang)(jiang)低(di)，建(jian)筑(zhu)(zhu)(zhu)(zhu)物(wu)(wu)(wu)(wu)下(xia)面地基(ji)(ji)基(ji)(ji)礎(chu)脫水(shui)后承載能力(li)降(jiang)(jiang)低(di)，在重力(li)作(zuo)用(yong)下(xia)被壓縮、固結。為防(fang)止此(ci)類不均(jun)勻沉(chen)(chen)降(jiang)(jiang)必須控制地下(xia)水(shui)位(wei)過度、快速(su)降(jiang)(jiang)低(di)。通常(chang)采取減慢降(jiang)(jiang)水(shui)速(su)度、打截滲帷幕、打井(jing)回(hui)灌(guan)(guan)地下(xia)水(shui)等措(cuo)施(shi)。其中(zhong)回(hui)灌(guan)(guan)地下(xia)水(shui)的方案比較簡(jian)單(dan)有效(xiao)，只需在建(jian)筑(zhu)(zhu)(zhu)(zhu)物(wu)(wu)(wu)(wu)與降(jiang)(jiang)水(shui)井(jing)之(zhi)間靠(kao)近建(jian)筑(zhu)(zhu)(zhu)(zhu)物(wu)(wu)(wu)(wu)的地方打井(jing)并回(hui)灌(guan)(guan)地下(xia)水(shui)，便可很大程度地防(fang)止建(jian)筑(zhu)(zhu)(zhu)(zhu)物(wu)(wu)(wu)(wu)沉(chen)(chen)降(jiang)(jiang)。

井(jing)點施工(gong)的(de)質量：在井(jing)點施工(gong)的(de)過(guo)(guo)程中(zhong)要嚴格控(kong)制其質量，特別是在放(fang)置濾(lv)管和填充(chong)砂(sha)石的(de)過(guo)(guo)程中(zhong)，要防止井(jing)壁(bi)塌土堵塞(sai)濾(lv)管形成(cheng)“死井(jing)”。同(tong)時，正確填充(chong)的(de)砂(sha)石可對地(di)下水進行(xing)過(guo)(guo)濾(lv)，防止排水的(de)過(guo)(guo)程中(zhong)地(di)下泥(ni)砂(sha)被大量抽出，既損(sun)害水泵又(you)容易堵塞(sai)管道。而(er)且，地(di)下泥(ni)砂(sha)大量流失可能導致地(di)面產生過(guo)(guo)多的(de)沉(chen)降甚至于開裂(lie)、坍(tan)塌。

擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)基施(shi)工(gong)(gong)(gong)，灰土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，環保擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，水(shui)泥土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，素(su)土(tu)擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，夯擴擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，沉管擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，強夯地基施(shi)工(gong)(gong)(gong)，碎石擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，擠(ji)密(mi)(mi)(mi)螺紋樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，鉆孔灌(guan)注樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，軟土(tu)地基施(shi)工(gong)(gong)(gong)，灰土(tu)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，我公司主營：擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)施(shi)工(gong)(gong)(gong)，擠(ji)密(mi)(mi)(mi)樁(zhuang)(zhuang)工(gong)(gong)(gong)程

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混凝土(tu)澆注時(shi)導(dao)管進泥

產生原因：

1.初灌(guan)混凝土(tu)數(shu)量不足(zu)。

2.導(dao)管底(di)距(ju)槽底(di)間距(ju)過大(da)。

3.導管插入混(hun)凝(ning)土(tu)內深度不足。

4.提導管(guan)過度，泥漿(jiang)擠入管(guan)內(nei)。

預防措(cuo)施和處理方法：

預防：首批混(hun)凝(ning)(ning)土(tu)應經計算，保(bao)持足夠數量，導(dao)管(guan)(guan)(guan)口離槽底間(jian)距保(bao)持不(bu)小于(yu)1.5D（D為導(dao)管(guan)(guan)(guan)直徑），導(dao)管(guan)(guan)(guan)插入混(hun)凝(ning)(ning)土(tu)深(shen)度保(bao)持不(bu)小于(yu)1.5m；測定混(hun)凝(ning)(ning)土(tu)上升面(mian)，確(que)定高度后再距此提拔導(dao)管(guan)(guan)(guan)。

處理(li)：如(ru)槽底(di)混(hun)凝(ning)(ning)土(tu)深度小于0.5m，山西灰(hui)土(tu)擠密樁(zhuang)施工聯(lian)系電話，可(ke)重新放隔水塞(sai)澆混(hun)凝(ning)(ning)土(tu)，山西灰(hui)土(tu)擠密樁(zhuang)施工，否則應將導管(guan)提出，將槽底(di)混(hun)凝(ning)(ning)土(tu)用空氣吸泥機清出，重新澆筑(zhu)混(hun)凝(ning)(ning)土(tu)，或(huo)改用帶活底(di)蓋導管(guan)插入混(hun)凝(ning)(ning)土(tu)內，重新澆混(hun)凝(ning)(ning)土(tu)。