文章來源：上海市國資委 發布時間：2018-12-20
近(jin)日，由隧(sui)道(dao)(dao)股(gu)份(fen)承建(jian)的(de)珠海橫琴(qin)長(chang)(chang)(chang)灣(wan)隧(sui)道(dao)(dao)雙線(xian)實現貫通(tong)。珠海橫琴(qin)長(chang)(chang)(chang)灣(wan)隧(sui)道(dao)(dao)工(gong)(gong)程(cheng)東(dong)線(xian)全長(chang)(chang)(chang)1072米，西(xi)線(xian)全長(chang)(chang)(chang)1025米，隧(sui)道(dao)(dao)成功穿(chuan)越了硬巖層——Ⅳ級和Ⅴ級圍巖占線(xian)路(lu)總長(chang)(chang)(chang)的(de)80％，強(qiang)度(du)可達(da)60-120Mpa；“兩級”土層——工(gong)(gong)程(cheng)南(nan)北(bei)側洞口開挖(wa)面(mian)以粉質和沙質粘性土為主，洞口下(xia)部分則以中(zhong)微風(feng)化花崗巖為主，為典型(xing)的(de)“上軟下(xia)硬”。由于工(gong)(gong)程(cheng)位于長(chang)(chang)(chang)隆(long)景區，項目(mu)部將環境保護(hu)列為重點(dian)工(gong)(gong)作，專人監控、灑水車24小時在(zai)崗、保持道(dao)(dao)路(lu)無遺(yi)落土方(fang)石，并順利通(tong)過了“廣(guang)東(dong)省房屋市(shi)政工(gong)(gong)程(cheng)安全生產文(wen)明施工(gong)(gong)示范工(gong)(gong)地”復評(ping)，達(da)成了隧(sui)道(dao)(dao)建(jian)設期(qi)間安全文(wen)明施工(gong)(gong)的(de)創優(you)目(mu)標(biao)(biao)。長(chang)(chang)(chang)灣(wan)隧(sui)道(dao)(dao)去(qu)年10月中(zhong)標(biao)(biao)、年底(di)實施首爆。鏖戰一年，穿(chuan)越大橫琴(qin)山，實現了在(zai)華(hua)南(nan)市(shi)場首條礦山法隧(sui)道(dao)(dao)的(de)貫通(tong)。