黄河几字弯区水安全保障与一体化水网工程布局研究
Water Security Safeguarding and Integrated Water Network Layout of the Jiziwan Region in the Yellow River Basin
黄河几字弯区是我国西北地区的经济中心、国家重要的能源基地和防沙治沙“主战场”,但水安全问题严重制约区域发展,科学研判黄河几字弯区水安全风险并提出针对性保障策略,对支撑黄河流域生态保护和高质量发展具有重要意义。本文系统分析了黄河几字弯区面临的水安全挑战,梳理了区域水网工程建设现状与一体化水网建设效益,并在此基础上提出了黄河几字弯区一体化水网建设的总体格局、线路布局及需调水规模。研究发现:① 黄河几字弯区水安全问题突出表现在供需水矛盾突出、水生态受损、防洪存在短板3个方面;② 尽管黄河几字弯区规划建设了大量引调水工程,但受制于工程建设方式,现有引调水工程的效益和效率均相对偏低;③ 借助南水北调西线工程调水入洮河方案,可构建全程自流的一体化水网格局,能够解决黄河几字弯区现有引调水工程体系取用水成本高、监管运维困难、协同互补能力弱等问题。为提升黄河几字弯区水安全保障能力,研究建议,坚持总量管控、深度节水、优化分水,持续强化水资源供需管理;以南水北调西线工程为核心,完善几字弯区水网格局;依托水网建设,完善区域生态保护修复布局。
The Jiziwan region in the Yellow River basin serves as the economic center of Northwest China, a crucial national energy base, and the primary zone for desertification control. However, severe water security constraints hinder regional development. Assessing water security risks and proposing targeted strategies in the Jiziwan region is significant for supporting ecological conservation and high-quality development in the Yellow River basin. This study analyzes water security challenges facing the Jiziwan region, reviews the current status of regional water network projects and the benefits of building an integrated water network, and proposes an integrated water network framework including its overall configuration, route layout, and required water transfer scale. Key findings indicate: (1) Water security issues in the Jiziwan region are primarily manifested in three aspects: acute water supply-demand imbalance, degraded aquatic ecosystem, and insufficient flood control capabilities; (2) Despite numerous planned water diversion projects, their effectiveness and efficiency remain suboptimal due to construction methods; (3) The Tao River water diversion scheme under the Western Route of the South-to-North Water Diversion Project could be used to establish a gravity-flow integrated water network, resolving critical issues in existing systems, such as high water abstraction cost, operational maintenance difficulties, and weak synergistic complementarity. Based on these findings, recommendations are proposed to enhance water security in three key areas: (1) strengthening water resource management through implementing total quantity control, promoting water conservation, and optimizing water allocation; (2) improving the Jiziwan water network framework with priority given to the Western Route project; (3) advancing ecological restoration by leveraging water network infrastructure.
黄河几字弯区 / 水安全 / 水资源 / 水网工程 / 南水北调西线
Jiziwan region in the Yellow River basin / water security / water resources / water network project / Western Route of the South-to-North Water Diversion Project
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国家重点研发计划项目(2024YFE0213104)
中国工程院咨询项目“黄河几字弯区水 ‒ 土 ‒ 经济高质量协同发展战略研究”(2024-XBZD-11)
水利部基本科研业务费项目(90022504)
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