9月28日，随着"粤海环北8号"盾构机刀盘从环北部湾广东水资源配置工程（以下简称"环北广东工程"） 上高盾构井破土而出，全线首个盾构区间顺利贯通。 环北广东工程全长约490公里，是国家水网骨干工程，也是广东省引水流量最大、输水线路最长、建设 条件最复杂、总投资最高的重大水利工程。 位于湛江的廉江隧洞全长约10.2公里，是环北广东工程湛江分干线的关键控制性工程。其中，河唇盾构 井至上高盾构井区间3.8公里的任务由中铁十二局"粤海环北8号盾构机"负责掘进，该盾构机是工程全线 首台始发的大型掘进设备。 随着该盾构区间的贯通，环北广东工程建设驶入快车道。工程建成后将连通沿线12座水库，惠及工程沿 线4市1800多万人，解决困扰雷州半岛千年的苦旱问题。下一步，项目将全力冲刺隧洞掘进、管线安 装、泵站建设等关键节点，早日实现建成通水目标。 ...

Core Insights - The article highlights significant progress in major water conservancy projects across the country, emphasizing the importance of these initiatives for national water management and resource allocation [1] Group 1: Major Water Projects - The Guxian Water Conservancy Hub is a key project in the Yellow River sediment control system and the national water network, with a focus on the dual diversion tunnel construction, which is currently in a critical phase [2] - The Guangdong Beibu Gulf Water Resource Allocation Project is the largest inter-basin water diversion project in Guangdong's history, with over 10,000 construction workers and more than 2,000 large equipment units involved, achieving 80 kilometers of tunnel excavation and over 50% completion of pipeline installation [4] - The Zhejiang Jingling Reservoir Project has completed the blasting of the dam hub, with ongoing construction of the dam and 11 water conveyance project sections proceeding as planned [5] - The second phase of the Yangtze River to Huaihe River project is accelerating, with significant progress in the construction of water intake facilities for local water plants, supported by national policies [6]