黄河下游防洪工程于2025年8月通过竣工验收并投入运用。黄河下游防洪工程是黄河流域防洪体系的重 要组成部分，也是国务院明确的172项节水供水重大水利工程之一。工程总投资66.99亿元，涉及黄河干 流河南省洛阳市孟津区至山东省东营市垦利区共14个市47个县（区），治理范围共计820公里，主要建 设任务包括加固堤防、改建加固险工及建设堤顶道路等。工程建成后，将提高黄河堤防整体抗洪能力， 进一步提升险工和控导工程坝垛、护岸强度，有效提高抵御洪水冲刷和控导河势能力。 2025年11月4日，国家水网骨干工程东庄水利枢纽工程正式下闸蓄水。作为黄河流域水沙调控体系中的 关键一环，东庄水利枢纽工程致力于解决渭河长久以来的"水沙异源"问题。工程位于陕西省咸阳市泾河 下游峡谷末端，混凝土双曲拱坝最大坝高230米，总库容32.76亿立方米，年总供水量4.35亿立方米。工 程建成后，将成为陕西库容最大、坝高最高的水利工程，50年内预计减少入渭泥沙30亿吨、入黄泥沙25 亿吨。此外，通过拦蓄洪水、调水调沙，可有效提高泾河下游防洪标准，保障西安、咸阳、渭南3个市9 个县（区）近150万人和80万亩耕地的防洪安全，全面改善渭北"旱腰带"地 ...

Core Viewpoint - The successful completion of the diversion tunnel for the Huanghe Guxian Water Conservancy Project marks a significant milestone, laying a solid foundation for subsequent diversion, dam construction, and overall project development [1] Group 1: Project Overview - The Guxian Water Conservancy Project is a major water conservancy initiative on the middle reaches of the Yellow River, following the completion of the Xiaolangdi Water Conservancy Project [1] - The project plays a strategic role in the Yellow River's water and sediment regulation system, controlling 65% of the Yellow River basin area, 73% of its water volume, 60% of sediment, and 80% of coarse sediment [1] Group 2: Project Benefits - Once completed, the project will provide comprehensive benefits including flood control, sediment reduction, water supply for irrigation, carbon reduction through power generation, and ecological protection [1] - The project is expected to significantly support ecological protection and high-quality development in the Yellow River basin [1]

Core Viewpoint - The successful completion of the diversion tunnel for the Yellow River Guyan Water Conservancy Hub Project marks a significant milestone, laying a solid foundation for subsequent river diversion and the full-scale construction of the main project [1][3]. Group 1: Project Overview - The Yellow River Guyan Water Conservancy Hub Project is a major water conservancy project on the Yellow River, following the completion of the Xiaolangdi Water Conservancy Hub in 2001, and plays a strategic role in the river's sediment regulation system [5]. - The project is a landmark initiative for the protection and governance of the Yellow River, ensuring its long-term stability and safety [5]. Group 2: Importance of the Diversion Tunnel - The diversion tunnel serves as a critical control project, providing a safe and smooth temporary channel for the Yellow River's flow during the main dam construction, thereby creating stable dry construction conditions for the main dam and associated structures [3]. - This engineering achievement is expected to accelerate the subsequent construction phases of the project [3]. Group 3: Functions and Benefits - Once completed, the Yellow River Guyan Water Conservancy Hub will perform essential functions such as flood control, sediment reduction, water resource regulation, water supply, irrigation, and power generation [5]. - The project will also facilitate downstream water replenishment and increase external water usage in the river, contributing significantly to the overall water and sediment regulation system of the Yellow River [5].

Core Viewpoint - The Huanghe Guxian Water Conservancy Hub Project is a significant infrastructure initiative under China's 14th Five-Year Plan, aimed at optimizing water resource allocation and supporting ecological protection and high-quality development in the Yellow River basin [4][5]. Group 1: Project Overview - The Guxian Project is located between Jixian in Shanxi and Yichuan in Shaanxi, controlling 73% of the Yellow River's water, 60% of its sediment, and 80% of coarse sediment [5]. - The project officially entered the construction phase in July 2024 and is progressing rapidly [4]. Group 2: Construction Techniques - The project employs a unique method of riverbed blocking and year-round diversion through tunnels, allowing for construction without disrupting the river flow [6]. - The construction of two diversion tunnels, each over 1 kilometer long with a span of 18.2 meters, presents significant geological challenges due to varying rock types and stability issues [8][10]. Group 3: Technological Integration - The project utilizes advanced technologies such as 3D modeling and geological radar for pre-excavation assessments, enhancing safety and efficiency [9][12]. - A digital twin of the Guxian Project is being developed, integrating real-time data monitoring and analysis to improve construction transparency and decision-making [11][12]. Group 4: Structural Features - The Guxian Dam will be the tallest roller-compacted concrete gravity dam in China, standing at 219.5 meters, with a concrete volume exceeding 18 million cubic meters [16][18]. - The dam's design includes multiple outlets for flood control and sediment management, enhancing its multifunctional capabilities [17]. Group 5: Environmental Impact - The project is expected to create a 200-kilometer-long waterway, improving the ecological environment and providing an average annual power generation of approximately 6.348 billion kilowatt-hours [18]. - The Guxian Project aims to significantly reduce water supply costs for surrounding regions by facilitating self-flowing water from the Yellow River [17][18].

Core Viewpoint - The Huanghe Guxian Water Conservancy Hub Project is a significant infrastructure initiative under China's 14th Five-Year Plan, aimed at optimizing water resource allocation and supporting ecological protection and high-quality development in the Yellow River basin [1][2]. Group 1: Project Overview - The Guxian Project is located between Jixian in Shanxi and Yichuan in Shaanxi, controlling 73% of the Yellow River's water, 60% of its sediment, and 80% of its coarse sediment [2]. - The project is set to enter its construction phase in July 2024, with significant progress already made in the excavation of diversion tunnels [1][3]. Group 2: Construction Challenges - The project faces geological challenges, including varying rock types and stability issues, requiring advanced construction techniques [4][11]. - The diversion tunnels, each over 1 kilometer long with a span of 18.2 meters, demand high precision in construction, with a deviation of only 9 millimeters achieved in the first tunnel [6][4]. Group 3: Technological Integration - The project employs advanced technologies such as 3D modeling and geological radar for pre-excavation analysis, enhancing safety and efficiency [5][9]. - A digital twin of the project is being developed, integrating real-time data monitoring and predictive analytics to improve construction management [7][10]. Group 4: Environmental and Economic Impact - The Guxian Project will significantly improve water supply conditions for 23 counties and 27 industrial parks, benefiting approximately 6.85 million acres of farmland [13]. - The project is expected to generate an average annual power output of about 6.348 billion kilowatt-hours, contributing to regional ecological improvement [13]. Group 5: Construction Scale and Innovation - The dam will be the highest roller-compacted concrete gravity dam in China, with a height of 219.5 meters and a concrete volume exceeding 18 million cubic meters [11][12]. - Innovative transportation solutions, including a large-scale belt conveyor system, are being implemented to manage the logistics of concrete and aggregate delivery [12].

Core Viewpoint - The event "Writing Youth Chapters on the Land of the Motherland" at Hohai University emphasizes the importance of youth engagement in national development, particularly in water conservancy projects, inspiring students to pursue their dreams and contribute to society [1][2]. Group 1: Youth Engagement and Inspiration - Notable alumni shared personal stories and experiences related to significant water conservancy projects, motivating students to learn and uphold the spirit of serving the country [1]. - The event served as a platform for students to connect with the achievements of their seniors, fostering a sense of purpose and direction in their own lives [2]. Group 2: Historical Context and Aspirations - The discussion highlighted the historical significance of water management in China, with the Yellow River being described as one of the most complex rivers, requiring long-term commitment to address its challenges [1]. - The narrative emphasizes that personal aspirations and national needs are intertwined, encouraging youth to align their goals with societal demands [4]. Group 3: The Value of Practical Experience - The essence of youth is portrayed as being shaped through practical experiences that create value and contribute to society, as exemplified by various figures in different fields [5]. - The call to action for the younger generation is to inherit the fighting spirit of their predecessors and to actively engage in shaping the future [5].

Core Viewpoint - The Huanghe Guxian Water Conservancy Hub Project is a significant infrastructure initiative aimed at addressing sediment control and water resource management in the Yellow River basin, with construction progressing rapidly and innovative technologies being employed to enhance efficiency and safety [1][5][7]. Group 1: Project Overview - The Guxian Water Conservancy Hub is a major water conservancy project located approximately 10 kilometers upstream from the Hukou Waterfall, designed to work in conjunction with the Xiaolangdi Reservoir to mitigate sediment accumulation in the Yellow River [3][4]. - The project is part of a broader national strategy to optimize water resource management and enhance ecological protection in the Yellow River basin, which includes seven key engineering projects [4][5]. Group 2: Construction Progress - As of the recent reports, the excavation of the lower section of the diversion tunnel has reached approximately 60% completion, with plans to achieve full tunnel connectivity by mid-December, ahead of schedule by 2.5 months [2][7]. - During the National Day holiday, over 1,400 workers were on-site to ensure the project progressed smoothly, focusing on the second layer of the diversion tunnel excavation and preparations for concrete lining [3][7]. Group 3: Technological Innovations - Advanced equipment such as intelligent rock drilling rigs is being utilized, which can automatically position drill holes with an accuracy of less than 5 millimeters, improving efficiency by over 30% compared to traditional methods [1][5]. - The project is also implementing a "digital twin" system to monitor and manage the construction process in real-time, enhancing safety and operational efficiency [5][6]. Group 4: Environmental and Economic Impact - Upon completion, the Guxian project is expected to significantly reduce sediment accumulation in the lower Yellow River, ensuring the riverbed remains stable and supporting sustainable water resource management [4][5]. - The project aims to promote high-quality economic and social development in the Yellow River basin, contributing to ecological protection and the overall health of the river system [4][5].

Core Points - The Yellow River Water Resources Commission is focusing on high-standard construction of the Guxian Water Conservancy Hub Project, aiming to establish a new benchmark for water conservancy projects in the Yellow River basin with goals of being a "people's project, quality project, and clean project" [1][2] - The project has made steady progress this year, with the project entity effectively coordinating design, supervision, and construction units, ensuring that milestone targets are being met [1][2] Group 1 - The meeting emphasized the importance of enhancing political awareness regarding the Guxian project and the need to increase responsibility, mission, and urgency in completing tasks such as project design, quality system establishment, and talent development [2] - There is a focus on precise and efficient service support, addressing key challenges, and ensuring that all measures are implemented thoroughly [2] - The project entity's capacity to fulfill responsibilities and improve management levels is being prioritized, with an emphasis on establishing a quality assurance system and ensuring accountability among all parties involved [2] Group 2 - Safety production is a critical focus, with the implementation of six risk control mechanisms for water conservancy safety, and an emphasis on managing safety during construction [2] - Departments are required to enhance supervision and management, ensuring that safety hazards are identified and rectified to maintain orderly and safe construction processes [2]