12月(yue)25日，我國(guo)最(zui)深海底隧(sui)(sui)道――深江鐵(tie)(tie)路珠江口(kou)隧(sui)(sui)道“大(da)灣區(qu)(qu)號(hao)”盾構(gou)機(ji)順利始發。深江鐵(tie)(tie)路建成后(hou)，將(jiang)進一步(bu)打(da)通(tong)沿(yan)海高鐵(tie)(tie)通(tong)道，助(zhu)力(li)打(da)造粵港澳(ao)大(da)灣區(qu)(qu)半小時生(sheng)活圈(quan)、經濟圈(quan)。

中鐵隧(sui)道(dao)(dao)局深(shen)(shen)(shen)江鐵路(lu)2標(biao)項目負責(ze)人魏(wei)晨亮表示：“珠(zhu)江口隧(sui)道(dao)(dao)是(shi)深(shen)(shen)(shen)江鐵路(lu)全(quan)線控制性工(gong)程，全(quan)長(chang)13.69公(gong)里，設(she)計時速(su)250公(gong)里。我(wo)們承擔了9175米(mi)的(de)施工(gong)任務，水(shui)下(xia)最(zui)(zui)大埋深(shen)(shen)(shen)115米(mi)，是(shi)我(wo)國水(shui)下(xia)隧(sui)道(dao)(dao)的(de)最(zui)(zui)深(shen)(shen)(shen)紀錄(lu)，最(zui)(zui)大水(shui)壓(ya)1.06兆(zhao)帕，相當(dang)于每(mei)平方厘米(mi)承擔10.6公(gong)斤的(de)壓(ya)力，強度(du)超過10個標(biao)準大氣壓(ya)，為世界之(zhi)最(zui)(zui)。”

盾構(gou)下(xia)井(jing)(jing)施(shi)工(gong)場地(di)位于南沙區萬頃沙江(jiang)提邊(bian)，土(tu)質為(wei)黑色淤泥且松軟(ruan)，地(di)下(xia)水豐富(fu)且水位高(gao)，場地(di)十分復雜，此次標的任務是(shi)超大(da)超重(zhong)(zhong)型盾構(gou)機(ji)(ji)下(xia)井(jing)(jing)吊裝(zhuang)(zhuang)，刀盤重(zhong)(zhong)達461噸(dun)，加上吊具(ju)及工(gong)裝(zhuang)(zhuang)近500噸(dun)起(qi)吊，施(shi)工(gong)現(xian)場端頭井(jing)(jing)剛好容(rong)下(xia)兩臺履帶式起(qi)重(zhong)(zhong)機(ji)(ji)作(zuo)業，項(xiang)目(mu)最(zui)終采(cai)用中(zhong)聯QUY650和ZCC5200S型履帶式起(qi)重(zhong)(zhong)機(ji)(ji)抬吊。QUY650主吊旋(xuan)(xuan)轉前(qian)移(yi)、輔吊ZCC5200S隨(sui)刀盤角度變化前(qian)移(yi)旋(xuan)(xuan)轉、最(zui)終合力定位下(xia)放，整個吊裝(zhuang)(zhuang)步驟一氣呵成。充分展現(xian)了中(zhong)聯重(zhong)(zhong)科起(qi)重(zhong)(zhong)機(ji)(ji)功(gong)能(neng)優越(yue)、結構(gou)緊湊(cou)、起(qi)重(zhong)(zhong)能(neng)力強(qiang)、操(cao)作(zuo)平穩可(ke)靠的技術(shu)特點(dian)。ZCC5200S是(shi)中(zhong)聯重(zhong)(zhong)科2020年全新開發(fa)的綜合能(neng)力強(qiang)大(da)的履帶起(qi)重(zhong)(zhong)機(ji)(ji)，盾構(gou)吊裝(zhuang)(zhuang)主臂(bei)(bei)24m+副(fu)臂(bei)(bei)9，幅(fu)度12m，起(qi)重(zhong)(zhong)量173T ，負(fu)載率87%。

深(shen)江鐵路是(shi)(shi)全國“八縱(zong)八橫(heng)”高鐵主通(tong)(tong)(tong)道沿海(hai)通(tong)(tong)(tong)道的重(zhong)要組成部分(fen)，是(shi)(shi)支撐粵港澳大(da)灣區建設的重(zhong)大(da)交通(tong)(tong)(tong)基礎設施，線路正線長116公里，途經深(shen)圳、廣州、東(dong)莞、中山、江門5個地(di)市。建成后將進一步(bu)打(da)通(tong)(tong)(tong)沿海(hai)高鐵通(tong)(tong)(tong)道，助力打(da)造粵港澳大(da)灣區半小時生活圈(quan)、經濟圈(quan)，輻射帶動(dong)粵東(dong)粵西與(yu)珠三角(jiao)區域協調發(fa)展。