西部陆海新通道标志性工程黄百铁路建设取得新进展
9月11日上午,西部陆海新通道标志性工程黄百铁路广西段三合1号隧道安全贯通,标志着黄百铁路接入南昆铁路永乐至百色间增建二线工程隧道施工圆满结束。
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黄百铁路起自贵州黄桶站,进入广西经乐业、凌云接入南昆铁路永乐镇站,是西部陆海新通道标志性工程。
中新网百色9月11日电 (莫小斌 秦塬棋 胡立权)9月11日上午,西部陆海新通道标志性工程——新建黄桶至百色铁路(以下简称黄百铁路)广西段三合1号隧道实现安全贯通,标志着黄百铁路接入南昆铁路永乐至百色间增建二线工程隧道施工圆满结束。
位于百色市右江区的三合1号隧道全长273米,洞身所处区域属于河谷低洼地段,岩体破碎、自稳能力差的Ⅴ级围岩占全隧的93%,每天掘进只有2米左右,施工难度较大。为保证隧道施工安全,建设单位黄百铁路公司、云桂铁路广西公司组织中铁二院、中铁二十五局黄百铁路项目部等单位优化施工工法,加强现场管控,确保隧道施工安全可控。
中铁二十五局黄百铁路项目部工区经理董永青介绍,在施工过程中,他们强化超前地质预报和风险识别管控,采用全机械开挖以及大管棚、超前小导管超前支护等工法,将施工对岩层的扰动降到最低。同时投入施工作业人员70名、机械设备12台套进行24小时轮班作业,确保隧道如期安全贯通。
据了解,黄百铁路起自贵州黄桶站,进入广西经乐业、凌云接入南昆铁路永乐镇站,通过南昆铁路永乐至百色间增建二线工程引入百色站。该区段增建二线工程全长12公里,涵盖21段路基、8座桥梁、9座隧道以及永乐镇站站改等施工项目。
“目前,黄百铁路接入南昆铁路永乐至百色间增建二线工程的隧道施工已圆满完成,路基施工完成进度的80%,桥梁以及站改施工正在稳步推进。该工程竣工后,既有南昆铁路永乐至百色间的平图能力将由现在的每日45对提升至165对,有效提升运输效率。”云桂铁路广西公司黄百铁路建设指挥部高级工程师宋同新说。
黄百铁路全长约315公里,设计时速160公里,是西部陆海新通道标志性工程。截至目前,黄百铁路广西段隧道工程已完成整体进度的74%,桥梁下部工程完成整体进度的94%,路基土石方完成整体进度的77%。项目预计2028年建成通车,届时将成为贵州北部地区至广西北部湾地区的便捷通道,对于加快推进西部陆海新通道建设,促进区域经济社会协调发展具有重要意义。
AI outlook — possibilities, not facts
黄百铁路预计2028年建成通车
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