基(ji)(ji)坑工程應由(you)建設方(fang)(fang)(fang)委托具備相應資質(zhi)的(de)第三方(fang)(fang)(fang)對(dui)基(ji)(ji)坑工程實(shi)施(shi)(shi)現場監(jian)(jian)(jian)測。監(jian)(jian)(jian)測單位(wei)應編(bian)制監(jian)(jian)(jian)測方(fang)(fang)(fang)案，基(ji)(ji)坑監(jian)(jian)(jian)測單位(wei)應嚴格(ge)按監(jian)(jian)(jian)測方(fang)(fang)(fang)案對(dui)基(ji)(ji)坑施(shi)(shi)工期與使用期進行監(jian)(jian)(jian)測。

當出現下列情(qing)況之在基礎施(shi)工及開挖槽、坑、溝土方前，建設(she)單位必須(xu)以書面形式向基坑施(shi)工企(qi)業(ye)提供(gong)(gong)(gong)詳(xiang)細(xi)的(de)與施(shi)工現場相關(guan)的(de)供(gong)(gong)(gong)水(shui)、排水(shui)、供(gong)(gong)(gong)電(dian)、供(gong)(gong)(gong)氣、供(gong)(gong)(gong)熱、通信、廣播電(dian)視等地(di)上(shang)、地(di)下管線資(zi)料(liao)和氣象、水(shui)文觀測資(zi)料(liao)，并保(bao)證資(zi)料(liao)的(de)真實(shi)、準確、完(wan)整；施(shi)工企(qi)業(ye)應(ying)制定地(di)上(shang)、地(di)下管線保(bao)護措(cuo)施(shi)。一時，必須(xu)立(li)即報(bao)警，并對基坑支護結構和周邊(bian)環境(jing)中的(de)保(bao)護對象采取應(ying)急(ji)措(cuo)施(shi)。

提醒您降水(shui)施(shi)(shi)工(gong)是指在(zai)地(di)下(xia)(xia)(xia)水(shui)位較高的地(di)區開(kai)挖深(shen)基(ji)(ji)坑(keng)，由于含水(shui)層被切斷，在(zai)壓差作(zuo)用下(xia)(xia)(xia)，地(di)下(xia)(xia)(xia)水(shui)必然會不斷地(di)滲流入基(ji)(ji)坑(keng)，如(ru)不進行(xing)基(ji)(ji)坑(keng)降排水(shui)工(gong)作(zuo)，將會造成基(ji)(ji)坑(keng)浸水(shui)，使現場施(shi)(shi)工(gong)條件變(bian)差，地(di)基(ji)(ji)承載(zai)力下(xia)(xia)(xia)降，在(zai)動水(shui)壓力作(zuo)用下(xia)(xia)(xia)還可能(neng)引(yin)起流砂、管(guan)涌和(he)邊坡失穩等現象，因此，為(wei)確保基(ji)(ji)坑(keng)施(shi)(shi)工(gong)安全，必須(xu)采(cai)取有效的降水(shui)和(he)排水(shui)措(cuo)施(shi)(shi)，亦(yi)稱降水(shui)工(gong)程。

基(ji)坑(keng)(keng)降水工(gong)(gong)(gong)程(cheng)需要(yao)專(zhuan)業資(zi)質；土方開挖工(gong)(gong)(gong)程(cheng)，基(ji)坑(keng)(keng)支(zhi)(zhi)護，降水工(gong)(gong)(gong)程(cheng)施(shi)工(gong)(gong)(gong)應由(you)(you)具(ju)有(you)相(xiang)應資(zi)質及(ji)安全生產許可(ke)證的企(qi)業承擔；在基(ji)礎施(shi)工(gong)(gong)(gong)及(ji)開挖槽，坑(keng)(keng)，溝(gou)土方前，建(jian)設(she)(she)單位以書面形式向(xiang)基(ji)坑(keng)(keng)施(shi)工(gong)(gong)(gong)企(qi)業提供(gong)詳細的；基(ji)坑(keng)(keng)工(gong)(gong)(gong)程(cheng)應由(you)(you)建(jian)設(she)(she)方對基(ji)坑(keng)(keng)工(gong)(gong)(gong)程(cheng)實施(shi)現場(chang)監(jian)測(ce)，應嚴格按(an)監(jian)測(ce)方案對基(ji)坑(keng)(keng)施(shi)工(gong)(gong)(gong)期(qi)與使用(yong)期(qi)進(jin)(jin)行(xing)監(jian)測(ce)；基(ji)坑(keng)(keng)支(zhi)(zhi)護結構施(shi)工(gong)(gong)(gong)完(wan)成后，由(you)(you)建(jian)設(she)(she)單位委托有(you)相(xiang)應資(zi)質的檢(jian)測(ce)單位對支(zhi)(zhi)護結構進(jin)(jin)行(xing)檢(jian)測(ce)，并按(an)要(yao)求提交檢(jian)測(ce)報(bao)告。