湖北十堰版“南水北调”全线最长钻爆隧洞主体完工|国产亲妺妺乱的性视频

  中新网十堰10月29日电 (何易培 杨梦佼)由十堰水源公司投资、中交二航局承建的十堰市中心城区水资源配置工程全线最长钻爆隧洞主体工程28日率先完工,标志着这项关乎城市发展和民生福祉的重大水利基础设施建设迈入关键阶段,为实现全线通水目标奠定了基础。

图为十堰市中心城区水资源配置工程施工第2标段主体工程完工仪式现场。 中交二航局供图

  十堰市中心城区水资源配置工程被誉为十堰版“南水北调”,是湖北省重点民生项目,也是国家“十四五”水安全保障规划重点项目。

  该工程以竹山潘口水库为水源,通过全程无压自流引水至马家河水库、百二河等流域,线路总长超73公里。由中交二航局承建的2标段位于十堰市房县姚坪乡境内,隧洞总长约23.6公里。

  其中,新建4号隧洞是全线最长钻爆隧洞,单洞长约19.3公里。项目具有“长、散、小、陡、险”等特点,是整个项目线路最长、支洞最多、施工条件最艰苦、难度最大的标段。

  自项目开工以来,中交二航局项目团队仅用2个月就完成“三通一平”基础建设,如期启动全线隧洞开挖。为顺利推进工程建设,团队自主创新研发达到国内领先水平的小断面引水隧洞超前掏心爆破开挖施工技术,提高炮眼利用率、隧洞的掘进质量和效率,并就突涌水制定详细方案,穿越断层破碎带采用“反压回填+注浆加固+超前支护”的措施进行加固处理。

  与此同时,项目团队严格遵循“短进尺、弱爆破、强支护、紧封闭、勤量测”的原则,加密变形监测点布置,及时开展综合性的超前地质预报,克服了点多面广、复杂地质条件、极端天气等诸多难题,率先安全实现了主体工程完工。

  鉴于项目地处南水北调核心水源区,为推动“一泓清水永续北上”,项目团队自觉践行绿色施工,将环境保护与水土保持贯穿全程,最大限度降低工程对环境与水土的影响。

图为项目团队将环境保护与水土保持贯穿全程。 中交二航局供图

  据了解,该工程建成后,将进一步优化十堰市域水资源配置,有效改善城区用水条件和水生态环境,进一步完善城市功能、提升城市品质。(完)

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