趕到平頂山舞(wu)鋼杰苑名家(jia)商住(zhu)樓項(xiang)目(mu)(mu)時,項(xiang)目(mu)(mu)正(zheng)在(zai)進行基(ji)(ji)礎基(ji)(ji)坑圍護和挖土施工(gong),現(xian)場是一片熱火的(de)(de)施工(gong)場面,蹲點在(zai)此的(de)(de)河南直屬項(xiang)目(mu)(mu)部總工(gong)張保德告訴(su)我,就在(zai)前不久(jiu),這里出現(xian)了三(san)(san)次險情:在(zai)挖基(ji)(ji)礎時先(xian)后出現(xian)了三(san)(san)次塌(ta)方。
張總工首先分析(xi)了該項目的特殊(shu)地質和周圍(wei)地形狀況,以及造(zao)成施工危險的幾個因素:
1、該項目基坑地質(zhi)復(fu)雜,巖石(shi)頁巖和山(shan)間大(da)溝(gou)(雜填土)松軟不(bu)穩(wen)定不(bu)均勻,邊(bian)(bian)坡不(bu)穩(wen)定;2、坑內最深處(chu)為-12米,正(zheng)(zheng)常的(de)邊(bian)(bian)坡支護困難;3、地下(xia)水(shui)距南邊(bian)(bian)水(shui)庫(ku)150米,水(shui)面(mian)比這里正(zheng)(zheng)常高出3米多;4、周圍有(you)6層(ceng)宿舍(she)樓,3層(ceng)教學樓,東邊(bian)(bian)還(huan)(huan)有(you)一2層(ceng)商店(dian),最危險的(de)是(shi)(shi)北(bei)邊(bian)(bian)有(you)兩個化糞(fen)池(chi),上(shang)面(mian)是(shi)(shi)磚圍墻(qiang),下(xia)面(mian)是(shi)(shi)毛石(shi)圍墻(qiang),加起(qi)來5米。岸上(shang)廁所還(huan)(huan)有(you)下(xia)水(shui)道,荷載大(da)。污水(shui)、生活(huo)用水(shui)、北(bei)邊(bian)(bian)山(shan)坡上(shang)的(de)雨水(shui),都通過(guo)大(da)管流(liu)向(xiang)臨時(shi)下(xia)水(shui)道,而這里的(de)雨季來得早,一般(ban)在5月,如果遇上(shang)雨季更不(bu)得了;5、基礎以(yi)(yi)下(xia)結構復(fu)雜:是(shi)(shi)巖石(shi)、拋毛石(shi)混凝土; 6、項目是(shi)(shi)小自由設(she)計,不(bu)是(shi)(shi)正(zheng)(zheng)規設(she)計,所以(yi)(yi)技(ji)術(shu)力量不(bu)夠,圖紙變動太大(da)。
眾多原(yuan)因造成該項(xiang)目(mu)在(zai)(zai)基礎施工中(zhong)遭遇到極大的(de)困擾。而(er)且(qie)在(zai)(zai)施工中(zhong)也接二連(lian)三地(di)出(chu)現塌方(fang):第(di)一(yi)次(ci)(ci)在(zai)(zai)2月(yue)份,東南角挖了(le)(le)十(shi)五(wu)米多時;第(di)二次(ci)(ci)是(shi)3月(yue)初,塌方(fang)地(di)在(zai)(zai)B區;第(di)三次(ci)(ci)出(chu)現險情是(shi)在(zai)(zai)3月(yue)20日晚(wan)上7點多,馬路上出(chu)現了(le)(le)裂(lie)縫,一(yi)旦徹底(di)裂(lie)開,后(hou)果將不堪設想(xiang)。針對這(zhe)緊急情況,項(xiang)目(mu)部(bu)立馬組織(zhi)人(ren)員連(lian)夜(ye)去買(mai)了(le)(le)鋼(gang)管(guan)搶修(xiu),當夜(ye),舞鋼(gang)的(de)鋼(gang)管(guan)全被售空。
10多(duo)(duo)天(tian)時間里(li),工(gong)(gong)(gong)(gong)地上始終有(you)40多(duo)(duo)位(wei)工(gong)(gong)(gong)(gong)人日(ri)夜輪流倒班(ban),晝夜搶修。連甲方(fang)(fang)也(ye)(ye)一夜沒有(you)合眼。針對項目(mu)實情,張總工(gong)(gong)(gong)(gong)多(duo)(duo)次從鄭州趕來舞鋼(gang),拿(na)出了(le)(le)(le)“防止邊(bian)樓(lou)出現裂縫‘危(wei)險(xian)段(duan)防護方(fang)(fang)案’”、 “C段(duan)拋毛石和混(hun)凝土(tu)施工(gong)(gong)(gong)(gong)方(fang)(fang)案”等多(duo)(duo)個(ge)方(fang)(fang)案,并在(zai)現場作技(ji)術指導。出現第三次重(zhong)大險(xian)情后他(ta)索性蹲(dun)點在(zai)工(gong)(gong)(gong)(gong)地,一蹲(dun)就是十幾天(tian)。一位(wei)上七十的(de)(de)老總工(gong)(gong)(gong)(gong),為了(le)(le)(le)項目(mu)的(de)(de)施工(gong)(gong)(gong)(gong)技(ji)術和安(an)全,堅(jian)守在(zai)施工(gong)(gong)(gong)(gong)一線(xian),真的(de)(de)非常不(bu)容(rong)易。頭發有(you)些(xie)花白的(de)(de)張總工(gong)(gong)(gong)(gong),臉上盡管有(you)些(xie)疲憊(bei),但他(ta)說,目(mu)前危(wei)情已基本(ben)解除,情況稍微穩(wen)(wen)定(ding)了(le)(le)(le)。問(wen)題解決后,他(ta)也(ye)(ye)終于(yu)可以放心(xin)地睡上幾個(ge)安(an)穩(wen)(wen)覺(jue)了(le)(le)(le)。
該(gai)項(xiang)目(mu)于去年11月底開(kai)工,正常(chang)的(de)基礎工期是2個(ge)月左(zuo)右,現(xian)在卻施工了(le)(le)4個(ge)月,可見這(zhe)里的(de)基礎有(you)多(duo)復(fu)雜,施工難度有(you)多(duo)大,而項(xiang)目(mu)部的(de)管理人員硬是發揚(yang)了(le)(le)“險情就是命(ming)令”的(de)戰斗(dou)精神(shen),啃下了(le)(le)這(zhe)道難關。
公司檢查(cha)組(zu)在(zai)認真(zhen)查(cha)看了施(shi)工(gong)(gong)現場(chang)后,對(dui)項(xiang)目班子提出(chu)幾點(dian)要求(qiu):1、施(shi)工(gong)(gong)方案第一(yi)時間傳(chuan)到直屬項(xiang)目總部;2、沉(chen)降觀測點(dian)的觀測報(bao)告,要有詳細記(ji)錄(lu);3、針對(dui)基(ji)坑的危險性,準備(bei)采取的措施(shi)要在(zai)報(bao)表上體現出(chu)來(lai);4、勞務要集中精力(li)施(shi)工(gong)(gong),搶抓好施(shi)工(gong)(gong)工(gong)(gong)期;5、基(ji)坑問題的處(chu)理,所有管理人員(yuan)都(dou)要引起重視。(韋曉敏)