Home » The total length is 98.3 kilometers! Shaanxi Diversion Han-Wei-Qinling Water Transmission Tunnel Completed – IT and Traffic – cnBeta.COM

The total length is 98.3 kilometers! Shaanxi Diversion Han-Wei-Qinling Water Transmission Tunnel Completed – IT and Traffic – cnBeta.COM

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The total length is 98.3 kilometers! Shaanxi Diversion Han-Wei-Qinling Water Transmission Tunnel Completed – IT and Traffic – cnBeta.COM

On the morning of February 22,With the TBM (Tunnel Hard Rock Boring Machine) cutterhead breaking out of the rock, the super-long water-conveying tunnel with a total length of 98.3 kilometers and a maximum buried depth of 2,012 meters – the Qinling Extra-long Water Conveying Tunnel of Shaanxi Province’s Han-Ji-Wei Project Diversion Project has been completed.This is the first time in the history of human engineering to cross the Qinling Mountains from the bottom.

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科技日报记者 史俊斌 通讯员 丁洋

引汉济渭工程是国家“十三五”10大标志性水利工程之一。由中国铁建铁一院勘察设计的秦岭输水隧洞是引汉济渭全线主骨架控制性工程,穿越了3条区域性大断裂,4条次一级断层和33条一般断层,涉及岩性20余种,面临着连续长距离硬岩掘进、超长距离施工通风、超长距离贯通测量、高频高强岩爆、深层外水压力、非煤层有害气体、硬岩底板隆起、各类型突涌水、TBM遭遇涌出状破碎岩等一系列技术难题。

铁一院引汉济渭工程秦岭特长隧洞总设计师李凌志对科技日报记者说:“秦岭特长输水隧洞2010年开工建设以来,铁一院专门组建了以中国工程院院士、全国工程勘察设计大师领衔的技术团队,主持开展了特深埋深层工程地质特性、设计施工关键技术、硬岩TBM长距离掘进、风险评估及对策和维修养护等5大类12项关键技术研究,有效解决了4000余次岩爆、600余次突涌水、888米底板隆起和3次TBM卡机脱困等难题;创造了TBM 法施工通风距离16.5公里、钻爆法施工通风距离7.2公里和隧洞相向贯通27.3公里的世界纪录;针对朱鹮、大熊猫、金丝猴、羚牛等野生动物活动频繁区域,通过线路绕避以及严禁设置施工支洞等一系列措施,最大限度减少对野生动物的影响。设计采用的‘高效沉淀池+过滤池+活性炭处理’工艺,确保隧洞施工排水处理后达到地表Ⅱ类水质标准。”

引汉济渭工程自汉江及其支流子午河取水,通过隧道穿越秦岭,向关中平原调水。项目包括调水工程、输配水工程,其中调水工程由汉江黄金峡水库、子午河三河口水库、秦岭特长隧洞组成;输配水工程由南干线、过渭干线、渭北东干线和西干线组成。工程建成后,每年将有约15亿方汉江水通过它源源不断输入陕西关中地区,可满足西安等4个重点城市,11个县级城市1411万人生产生活用水。

(受访者供图)

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