揚中井點降水,機打降水井,工程降水策化

井(jing)(jing)(jing)點(dian)(dian)(dian)降(jiang)水(shui)可(ke)以大(da)大(da)施工(gong)(gong)(gong)作業(ye)條(tiao)(tiao)件。工(gong)(gong)(gong)作效(xiao)率，加快施工(gong)(gong)(gong)進度，降(jiang)低工(gong)(gong)(gong)程(cheng)造價等，手(shou)動地下水(shui)位常(chang)用(yong)(yong)的(de)(de)降(jiang)水(shui)類型， 3適用(yong)(yong)范(fan)圍管(guan)井(jing)(jing)(jing)點(dian)(dian)(dian)降(jiang)水(shui)的(de)(de)施工(gong)(gong)(gong)方(fang)法適用(yong)(yong)于(yu)含(han)水(shui)層滲透(tou)系數(shu)(shu)在10-m/d范(fan)圍內。地下水(shui)富(fu)集(ji)的(de)(de)區域(yu)，由于(yu)單(dan)眼井(jing)(jing)(jing)的(de)(de)大(da)位移(yi)和從(cong)淺到深的(de)(de)動態沉(chen)淀，該方(fang)法可(ke)以應用(yong)(yong)于(yu)各種水(shui)文(wen)地質條(tiao)(tiao)件，水(shui)深可(ke)以3至5米。 4工(gong)(gong)(gong)藝原理和設(she)(she)計(ji)概(gai)述管(guan)道(dao)井(jing)(jing)(jing)點(dian)(dian)(dian)是(shi)一(yi)種井(jing)(jing)(jing)點(dian)(dian)(dian)排水(shui)方(fang)法，在挖掘基坑(keng)(keng)之前。沿著坑(keng)(keng)的(de)(de)周邊或者在挖掘基坑(keng)(keng)的(de)(de)一(yi)側和兩側埋設(she)(she)一(yi)定數(shu)(shu)量的(de)(de)比坑(keng)(keng)底更深的(de)(de)井(jing)(jing)(jing)點(dian)(dian)(dian)，濾水(shui)管(guan)或管(guan)井(jing)(jing)(jing)通過主管(guan)連(lian)接或直(zhi)接與抽水(shui)設(she)(she)備連(lian)接。

3、 輕型井點降水應(ying)經常進行檢查，其規律應(ying)"先大后小，先渾后清"。若出現異常情況(kuang)，應(ying)及時進行檢查。

4、 在抽水(shui)(shui)中，應經常檢查和調節離心泵的(de)閥(fa)門(men)(men)以控(kong)制流水(shui)(shui)量，當地下(xia)水(shui)(shui)位降(jiang)到所要求的(de)水(shui)(shui)位后，要閥(fa)門(men)(men)的(de)量，盡量使(shi)抽吸與排水(shui)(shui)保持均勻，達到細水(shui)(shui)長流。

5、 真(zhen)空(kong)度是輕型井點降水(shui)能否順利進(jin)行降水(shui)的主(zhu)要(yao)技術指數，現(xian)(xian)場設(she)專人經常(chang)觀測?若抽水(shui)中發現(xian)(xian)真(zhen)空(kong)度不足，應(ying)(ying)立即檢查整(zheng)個抽水(shui)系統有無漏(lou)氣環節(jie)，并應(ying)(ying)及時(shi)排除(chu)。

揚中井點降水,機打降水井,工程降水策化　　

在井(jing)(jing)下管(guan)道(dao)之前(qian)，鋼網(wang)框架(jia)應采用(yong)圓形礫石過(guo)濾(lv)層固定，并用(yong)兩層玻璃纖維(wei)濾(lv)布包裹，以(yi)確(que)定過(guo)濾(lv)材料的(de)安(an)(an)裝質量(liang)，然后(hou)(hou)(hou)再進行(xing)后(hou)(hou)(hou)續(xu)施工，（7）放置水(shui)(shui)泵(beng)用(yong)鋼絲將潛(qian)水(shui)(shui)排(pai)污泵(beng)抬高到井(jing)(jing)管(guan)內(nei)一定高度(du)進行(xing)安(an)(an)裝。并為(wei)潛(qian)水(shui)(shui)排(pai)污泵(beng)安(an)(an)裝電機(ji)和電纜，安(an)(an)裝電纜時(shi)，請確(que)保(bao)現(xian)場(chang)安(an)(an)全，避(bi)免(mian)潛(qian)在的(de)安(an)(an)全隱患，（8）井(jing)(jing)洗井(jing)(jing)管(guan)安(an)(an)裝完成后(hou)(hou)(hou)。壓(ya)縮空(kong)氣可用(yong)于(yu)井(jing)(jing)水(shui)(shui)沖洗，井(jing)(jing)內(nei)各種泥漿(jiang)和雜質從井(jing)(jing)筒中沖洗出來，潛(qian)水(shui)(shui)排(pai)污泵(beng)啟(qi)動抽水(shui)(shui)含有雜質的(de)泥漿(jiang)沉淀(dian)池外場(chang)，沉淀(dian)處理后(hou)(hou)(hou)。應單(dan)獨處理，不(bu)得污染，（9）降(jiang)水(shui)(shui)確(que)保(bao)管(guan)井(jing)(jing)脫(tuo)水(shui)(shui)系(xi)統安(an)(an)裝正確(que)后(hou)(hou)(hou)。啟(qi)動泵(beng)降(jiang)低基坑地下水(shui)(shui)位，同時(shi)觀(guan)察水(shui)(shui)位深化，然后(hou)(hou)(hou)進行(xing)基坑施工當水(shui)(shui)位低于(yu)設(she)計(ji)值(zhi)時(shi)可以(yi)進行(xing)。