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　　三九養(yǎng)生堂記者 鄧肯·蓋伊 報道

精彩|　　同??(tong)時??(shi)??，項??(xiang)目??(mu)建??(jian)設??(she)方??(fang)優(yōu)??(you)化?(hua)施?(shi)工??(gong)工??(gong)序??(xu)??，采??(cai)用??(yong)主??(zhu)籠??(long)、導??(dao)管??(guan)提??(ti)前??(qian)在??(zai)相??(xiang)鄰??(lin)孔??(kong)預??(yu)拼??(pin)到??(dao)位??(wei)等?(deng)方??(fang)式??(shi)??，節(jié)?(jie)省??(sheng)了??(le)鋼??(gang)筋??(jin)籠??(long)和??(he)導??(dao)管??(guan)下??(xia)放??(fang)、拼??(pin)接??(jie)時??(shi)間?(jian)??，極??(ji)大??(da)提??(ti)高??(gao)了??(le)施??(shi)工??(gong)效??(xiao)率?(lv)??。??　　據??(ju)了秘(le)解??(jie)??，杭??(hang)州??(zhou)灣??(wan)是??(shi)世??(shi)界??(jie)三?(san)大??(da)強??(qiang)潮??(chao)海??(hai)灣??(wan)之??(zhi)一??(yi)??，海??(hai)域??(yu)寬??(kuan)、風??(feng)大??(da)、浪??(lang)高??(gao)、潮??(chao)差??(cha)大??(da)、流??(liu)急??(ji)??，建??(jian)橋??(qiao)條??(tiao)件?(jian)受?(shou)水??(shui)文??(wen)、氣??(qi)象??(xiang)、地??(di)質??(zhi)等??(deng)自??(zi)然??(ran)環(huán)?(huan)境??(jing)的??(de)影??(ying)響??(xiang)大??(da)??。??特?(te)別??(bie)是??(shi)8號??(hao)墩??(dun)所??(suo)處??(chu)海??(hai)域??(yu)地??(di)質??(zhi)條??(tiao)件?(jian)復??(fu)雜??(za)??，多?(duo)為??(wei)流??(liu)塑??(su)層秘(ceng)或??(huo)軟??(ruan)塑??(su)層??(ceng)??，成??(cheng)孔??(kong)及??(ji)成??(cheng)樁??(zhuang)難??(nan)度?(du)大??(da)??。為?(wei)確??(que)保??(bao)鉆??(zuan)孔?(kong)樁??(zhuang)施??(shi)工??(gong)進??(jin)度??(du)和??(he)成?(cheng)孔??(kong)質??(zhi)量??(liang)??，中??(zhong)鐵??(tie)大??(da)橋?(qiao)局??(ju)研?(yan)制??(zhi)了?(le)最??(zui)大?(da)鉆?(zuan)孔??(kong)直?(zhi)徑??(jing)4.5米??(mi)??，鉆??(zuan)孔??(kong)深??(shen)度??(du)可??(ke)達??(da)155米??(mi)的??(de)SWDM800大??(da)型??(xing)旋?(xuan)挖??(wa)鉆??(zuan)機??(ji)??，使??(shi)用?(yong)該??(gai)設?(she)備??(bei)與??(yu)XR580旋??(xuan)挖??(wa)鉆??(zuan)機?(ji)接??(jie)力??(li)鉆??(zuan)進??(jin)成??(cheng)孔??(kong)??，并??(bing)配??(pei)備??(bei)相??(xiang)應??(ying)的??(de)成??(cheng)孔??(kong)設??(she)備?(bei)??。

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