8月(yue)26日，從(cong)深圳(zhen)市交通(tong)(tong)運(yun)輸局獲(huo)悉，深圳(zhen)軌道交通(tong)(tong)首個下穿(chuan)海(hai)域(yu)盾構(gou)隧道工(gong)程順(shun)利“穿(chuan)海(hai)”。在建中的(de)地(di)鐵12號(hao)線(xian)(xian)(xian)左(zuo)太區(qu)間(jian)（即“左(zuo)炮臺站(zhan)~太子灣站(zhan)”）右(you)線(xian)(xian)(xian)盾構(gou)于近(jin)日實(shi)現貫通(tong)(tong)，離12號(hao)線(xian)(xian)(xian)盾構(gou)全(quan)線(xian)(xian)(xian)貫通(tong)(tong)再近(jin)一(yi)步。12號(hao)線(xian)(xian)(xian)左(zuo)太區(qu)間(jian)左(zuo)線(xian)(xian)(xian)全(quan)長約(yue)(yue)(yue)908.96m，右(you)線(xian)(xian)(xian)全(quan)長約(yue)(yue)(yue)913.18m。其中，左(zuo)線(xian)(xian)(xian)下穿(chuan)海(hai)域(yu)長度約(yue)(yue)(yue)158.56m，右(you)線(xian)(xian)(xian)下穿(chuan)海(hai)域(yu)長度約(yue)(yue)(yue) 185.49m。區(qu)間(jian)采用“礦山法(fa)+盾構(gou)法(fa)”施工(gong)，由兩臺泥(ni)水平衡盾構(gou)機承擔該(gai)區(qu)間(jian)掘(jue)進任務(wu)。左(zuo)太區(qu)間(jian)（即“左(zuo)炮臺站(zhan)~太子灣站(zhan)”）左(zuo)線(xian)(xian)(xian)也于8月(yue)6日啟動下穿(chuan)海(hai)域(yu)施工(gong)；8月(yue)19日，左(zuo)線(xian)(xian)(xian)盾構(gou)機安(an)全(quan)平穩脫出蛇(she)口海(hai)域(yu)。地(di)鐵12號(hao)線(xian)(xian)(xian)全(quan)長約(yue)(yue)(yue)40.6km，共設站(zhan)33座(zuo)，其中換乘(cheng)站(zhan)18座(zuo)，堪稱深圳(zhen)西(xi)部地(di)鐵的(de)“換乘(cheng)大戶”。12號(hao)線(xian)(xian)(xian)串聯起南山中心區(qu)、寶安(an)中心區(qu)、福永片區(qu)、大空港及會(hui)展片區(qu)的(de)軌道交通(tong)(tong)骨干線(xian)(xian)(xian)路(lu)。該(gai)線(xian)(xian)(xian)路(lu)預計2022年(nian)建成(cheng)通(tong)(tong)車。