文章來源：中國葛洲壩集(ji)團公(gong)司 發布時間：2010-03-20
3月15日(ri)，由葛洲壩集團向家壩施(shi)工(gong)局承擔施(shi)工(gong)任務的向家壩工(gong)程二期防滲墻成(cheng)槽(cao)量已達到77%以上(shang)，目前還剩24個槽(cao)段(duan)正在抓緊施(shi)工(gong)中。
向家(jia)壩(ba)二期(qi)防(fang)(fang)(fang)滲墻(qiang)是今年基坑(keng)安全(quan)度汛的(de)卡關項(xiang)目。受不良地質影響，防(fang)(fang)(fang)滲墻(qiang)施(shi)(shi)(shi)工(gong)(gong)部位建基面最深達到60米，較以(yi)往常規(gui)40多米的(de)防(fang)(fang)(fang)滲施(shi)(shi)(shi)工(gong)(gong)高出近30%。同時，為(wei)確保(bao)施(shi)(shi)(shi)工(gong)(gong)質量，防(fang)(fang)(fang)滲墻(qiang)建基面的(de)勘探孔由原來15米改為(wei)7.5米一個，工(gong)(gong)程量增大(da)。為(wei)確保(bao)按(an)期(qi)完(wan)成防(fang)(fang)(fang)滲墻(qiang)施(shi)(shi)(shi)工(gong)(gong)，向家(jia)壩(ba)施(shi)(shi)(shi)工(gong)(gong)局(ju)通過加(jia)大(da)鉆(zhan)機設備投入(ru)和大(da)力實施(shi)(shi)(shi)激勵機制，提高了廣大(da)干部職工(gong)(gong)的(de)主觀能(neng)動性，使68臺鉆(zhan)機設備安全(quan)運行，較好地完(wan)成了各項(xiang)施(shi)(shi)(shi)工(gong)(gong)生產任(ren)務。目前(qian)施(shi)(shi)(shi)工(gong)(gong)槽段閉氣效果良好，能(neng)滿足(zu)質量控制要求，實現3月30日防(fang)(fang)(fang)滲墻(qiang)完(wan)工(gong)(gong)目標(biao)指日可待。