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海湾隧道盾构机迎来首个“核心大部件”
发布日期:2024-02-07
        8月28日,在汕头的南边,海湾隧道施工现场围起了一圈身着蓝色服装的工人,在他们面前两辆大型吊车,一辆是可以承担500吨重量的履带吊车,一辆是可以承担400吨重量的车轮吊车整装待发。从两辆吊车伸出共计8条直径90毫米的钢丝吊绳,这些吊绳稳稳地将一个大红色的“零部件”托起。

       这个“大红色神器”就是刀盘中心块,是海湾隧道工程首台(东线)盾构机重新分拆后的核心部件。在这个“神器”运抵后,海湾隧道工程所需的两台盾构机将从8月下旬开始分批启运,全部运输周期约3个月。

       首台盾构机顺利完成制造

       汕头海湾隧道总投资近60亿元,工程总长6.68公里,是汕头市政府和中信集团以“PPP”模式合作共建的重大交通基础设施工程,属于公益性省重点工程项目,位于海湾大桥和礐石大桥之间。

       项目建成通车后,将开辟汕头南北两岸过海新通道,突破极端恶劣天气下过海交通瓶颈,两岸行车时间由原来的40分钟缩短为6分钟,缓解目前两桥的交通压力,加快构筑大汕头湾区城市格局,促进中心城区扩容提质。

       汕头海湾隧道苏埃通道工程是国内第一条建在8度地震烈度区的超大直径海底盾构公路隧道,汕头海湾隧道工程采用国际上先进的隧道掘进专用施工设备——盾构机。

       盾构机是一种隧道掘进的专用工程机械。8月7日上午,由中铁隧道局集团全球采购招标,由德国海瑞克公司中标制造的汕头海湾隧道首台盾构机完成制造顺利下线。该盾构机不仅直径大,而且在开挖掘进中,可以在内部更换耗损刀具,同时具有前后伸缩等新功能,能够确保海底施工更加高效和安全。

       运用盾构机掘进将化解施工之难

       “汕头海湾隧道工程是国内第一条建在8度地震烈度区的超大直径海底盾构公路隧道,隧道挖掘范围内有大量强度高的孤石和长达182米基岩突起段,具有地质复杂、施工难度、安全风险等级高等特点,而运用盾构机掘进可以解决很多问题。”汕头市苏埃通道建设投资发展有限公司相关负责人告诉记者。

       汕头海湾隧道现场施工方向记者介绍,整个盾构机重达4000多吨,总长预计达到135米,由德国海瑞克公司中标制造,从完成设计到建成共用了13个月的时间。“由于部件特别大,运输极其困难,于是将整个盾构机拆分成上万个部件,从广州分别通过海运和陆运的方式运达汕头以后,在现场进行重新组装,预计组装时间也要长达3个多月,计划于11月28日始发掘进。”

       据了解,东线盾构机预计9月份进行组装,10月份调试;西线盾构机目前正在郑州中铁装备公司加紧组装中,近期也将下线。届时,两台盾构机(东线、西线)从南岸围堰始发井出发向北掘进,到达华侨公园接收井吊出。

       由于盾构机真正掘进前还需要很多前期准备工作,其中一项便是汕头南岸围堰始发井的搭建。记者在现场看到,目前始发井的土四方已经挖到底了,后配套也在按时施工。工人在烈日下挥汗如雨,旁边的混凝土泵车正在源源不断地作业,浇注始发井的混凝土层。

       在盾构机摆放的旁边正在挖土,这里即将建起一个泥水处理厂,占地面积将达到1.5万平方米。

       “掘进神刀”足足运了5天时间

       记者在现场看到,刚刚运抵南滨的“大部件”外面为大红色漆。据介绍,该“红色大神器”重达185吨,直径长8.7米、宽8.4米、高3.3米,直径有3层楼那么高,共计有75把钝刀、36把切刀以及其他各式刀具。它将成为贴土层施工的“前锋”,保证施工掘进的顺利,堪称“掘进神刀”。

       “一共运了5天,这是盾构机第一块也是最核心的部件。”汕头市苏埃通道建设投资发展有限公司相关负责人说。

       8月21日,刀盘中心块从广州南沙出发,8月26日顺利抵达汕头港广澳码头。当晚9时,运输车队从广澳港区出发,为确保部件顺利抵达工地,在濠江交警、汕头市公路局、濠江区城建环保局、新城办、广澳港区派出所、中铁隧道集团、苏埃通道公司等的通力合作下,经过3个多小时的紧张运输,运输车于27日凌晨顺利运抵海湾隧道工程南岸工地。

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  1. CONNECT:[ UseTime:0.000749s ] mysql:host=127.0.0.1;port=3306;dbname=cszcwcn_com;charset=utf8
  2. SHOW FULL COLUMNS FROM `zzw_config` [ RunTime:0.004344s ]
  3. SELECT * FROM `zzw_config` ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000559s ]
  4. SHOW FULL COLUMNS FROM `zzw_common_cat` [ RunTime:0.001616s ]
  5. SELECT * FROM `zzw_common_cat` WHERE `deltime` = '' AND `parent_id` = 0 ORDER BY `sort` ASC,`id` ASC LIMIT 0,4 [ RunTime:0.000508s ]
  6. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 15 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000475s ]
  7. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 16 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000496s ]
  8. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 14 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000537s ]
  9. SELECT * FROM `zzw_common_cat` WHERE `parent_id` = 13 AND `deltime` = '' ORDER BY `sort` ASC LIMIT 0,8 [ RunTime:0.000446s ]
  10. SHOW FULL COLUMNS FROM `zzw_news` [ RunTime:0.001599s ]
  11. SELECT `n`.*,c.id as catid,c.catname as catname FROM `zzw_news` `n` LEFT JOIN `zzw_news_cat` `c` ON `n`.`catid`=`c`.`id` WHERE `n`.`id` = '14324' AND `n`.`deltime` = '' LIMIT 1 [ RunTime:0.000819s ]
  12. SELECT `id`,`catid`,`title`,`thumb` FROM `zzw_news` WHERE `id` > 14324 AND `deltime` = '' AND `catid` = 84 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000546s ]
  13. SELECT `id`,`catid`,`title`,`thumb` FROM `zzw_news` WHERE `id` < 14324 AND `deltime` = '' AND `catid` = 84 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000578s ]
  14. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `is_recommend` = 1 ORDER BY `id` DESC LIMIT 0,4 [ RunTime:0.004547s ]
  15. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `is_recommend` = 0 ORDER BY `id` DESC LIMIT 0,10 [ RunTime:0.000486s ]
  16. SHOW FULL COLUMNS FROM `zzw_news_cat` [ RunTime:0.001911s ]
  17. SELECT * FROM `zzw_news_cat` WHERE `parent_id` = 0 AND `deltime` = '' [ RunTime:0.000504s ]
  18. SELECT COUNT(*) AS think_count FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 84 [ RunTime:0.030389s ]
  19. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 84 ORDER BY `id` DESC [ RunTime:0.030297s ]
  20. SELECT COUNT(*) AS think_count FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 85 [ RunTime:0.006821s ]
  21. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 85 ORDER BY `id` DESC [ RunTime:0.007761s ]
  22. SELECT * FROM `zzw_config` WHERE `id` = 2 LIMIT 1 [ RunTime:0.000563s ]
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