黄河调水调沙

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黄河汛期调水调沙结束 累计排沙超780亿千克
Zhong Guo Xin Wen Wang· 2025-09-17 11:40
黄河汛期调水调沙结束 累计排沙超780亿千克 在调度过程中,三门峡水库自9月7日15时起按3000立方米每秒预泄,直至敞泄,为小浪底水库排沙出库 提供动力。小浪底、西霞院水库联合调度,根据来水及水库排沙及时调整下泄流量,有效减轻水库河道 淤积,同时确保下游河道防洪安全。自9月8日9时起,小浪底水库按2500立方米每秒下泄,控制花园口 站流量在2600立方米每秒左右;为应对区间降雨过程,9月10日压减下泄流量至2300立方米每秒;降雨 过程结束后,9月13日14时流量恢复至2500立方米每秒。随着上游来水减少,三门峡水库自9月10日15时 起按1600立方米每秒下泄,稳步回蓄。小浪底水库9月17日9时按1500立方米每秒下泄,结束汛期调水调 沙。(完) 来源:中国新闻网 编辑:张嘉怡 广告等商务合作,请点击这里 本文为转载内容,授权事宜请联系原著作权人 中新经纬版权所有,未经书面授权,任何单位及个人不得转载、摘编或以其它方式使用。 关注中新经纬微信公众号(微信搜索"中新经纬"或"jwview"),看更多精彩财经资讯。 中新社郑州9月17日电 (记者 阚力)中国水利部黄河水利委员会(下称黄委)17日消息称,当日9 ...
黄河调水调沙进行时 揭秘“人工洪峰”输沙入海的科学手段
Yang Shi Xin Wen· 2025-07-04 07:06
调水调沙是通过科学调度水库,利用水流冲刷河床,减少河道淤积,改善河道形态的一种治理手段。 具体来说,就是通过调控上游水库的下泄流量,形成人工洪峰,利用水流将河床里的泥沙带到下游,最终进入大海,从而实现河道的长期稳定和生态健康。 今年黄河流域已于7月1日正式入汛。为应对汛期,黄河2025年调水调沙任务已于6月23日启动,历时17天。什么是调水调沙,它的基本原理是什么? 随着今年调水调沙开启,目前黄河下游山东段流量逐渐加大,已出现今年最大流量。 黄河三角洲是我国重要的湿地生态系统,被誉为"鸟类的国际机场"。为了恢复这片湿地的生态功能,2008年以来,每年调水调沙期间都会向黄河三角洲自然 保护区进行"生态补水",17年间已累计补水超9亿立方米。 记者了解到,6月29日下午,小浪底水库的水位已按计划降至汛限水位以下。专家表示,每年的调水调沙,对黄河安全度汛起到重要作用。 黄河调水调沙期间开启生态补水,为黄河三角洲生态功能恢复注入了新的活力。目前,黄河三角洲自然保护区湿地补水面积达到36万亩。 根据常年监测调查,这里的鸟类种群数量明显增加,由1992年的187种增加到2024年的374种。同时当前补水湿地中已经逐渐形成 ...
排沙量将超1亿吨 小浪底水库正式进入排沙阶段
news flash· 2025-07-03 14:38
Core Viewpoint - The Xiaolangdi Reservoir has officially entered the sediment discharge phase, with a significant increase in sediment concentration, indicating a crucial step in the Yellow River's water and sediment regulation project scheduled for 2025 [1] Group 1 - The outflow water from the Xiaolangdi Reservoir has changed from clear to turbid, with sediment concentration reaching 39.1 kilograms per cubic meter at the sediment discharge outlet [1] - By 16:00, the sediment concentration at the discharge outlet increased to 101 kilograms per cubic meter, highlighting the effectiveness of the sediment discharge process [1] - The sediment discharge process is expected to last until July 9, with a total discharge volume anticipated to exceed 10 million tons, which will help restore reservoir capacity and enhance flood control capabilities [1]
黄河河南段7座浮桥全部拆解完毕
He Nan Ri Bao· 2025-07-02 23:27
Group 1 - The core viewpoint of the articles emphasizes the completion of the dismantling of seven floating bridges in the Henan section of the Yellow River before the main flood season, ensuring safety during the flood period [1][2] - The floating bridges serve as crucial connections across the Yellow River, and their structure is designed to maintain a flat surface while being supported by steel floating boxes [1] - The management of the floating bridges is critical during the flood season to prevent obstruction of water flow, which could elevate water levels and pose risks to the safety of residents and property on both banks [1] Group 2 - The Henan Yellow River Conservancy Bureau has implemented strict regulations and oversight to ensure the safe dismantling and anchoring of floating bridges, in accordance with the "Flood Management Measures for Floating Bridges in the Middle and Lower Reaches of the Yellow River" [1][2] - A supervisory team has been dispatched to monitor the dismantling process, focusing on the implementation of flood safety measures, maintenance of monitoring facilities, and the establishment of safety warning systems [2] - Floating bridge operators are required to enhance their awareness of flood safety management, maintain a 24-hour duty system, and develop effective emergency measures to prevent accidents such as drifting or losing anchored vessels [2]
图解黄河调水调沙“名场面”
Ren Min Ri Bao Hai Wai Ban· 2025-07-01 22:47
Core Viewpoint - The Yellow River Xiaolangdi Water Conservancy Project has officially launched its water and sediment regulation for 2025, with an expected total sediment discharge exceeding 100 million tons during the operation period of approximately 17 days [2]. Group 1: Purpose of Water and Sediment Regulation - The water and sediment regulation aims to "create storage for flood prevention," reduce sediment accumulation in the reservoir, and maintain the flow capacity of downstream rivers. The Xiaolangdi project controls 91.2% of the Yellow River's runoff and nearly 100% of its sediment transport [3]. Group 2: Visitor Experience - During the water and sediment regulation period, the Xiaolangdi scenic area remains open to the public, allowing visitors to experience the impressive sight of the rushing water, which resembles a waterfall [4]. Group 3: Water-Sediment Relationship - The term "regulation" in the context of water and sediment management refers to adjusting the water-sediment relationship to enhance the flood discharge capacity of the river [5]. Group 4: Impact on Power Generation - When the sediment concentration in the water reaches a certain level, the power generation units will shut down to avoid damage. The Xiaolangdi power station has an average annual output of 5.8 billion kilowatt-hours, playing a crucial role in peak regulation within the Henan power grid [6]. Group 5: Impact on Aquatic Life - To mitigate the impact of high-sediment water on fish, clear water is released from three upstream reservoirs to dilute the sediment concentration. Additionally, special fishing operations have been conducted in advance, and fish stocking activities are ongoing to support aquatic life [7]. Group 6: Downstream Sediment Accumulation - Research indicates that maintaining a discharge flow of 2,600 cubic meters per second for over six days will effectively flush sediment from the downstream river into the sea. The regulation process consists of two phases: first, a large volume of clear water is released, followed by sediment discharge [8]. Group 7: Xiaolangdi Water Conservancy Project Overview - The Xiaolangdi Water Conservancy Project is a key engineering project for the management and development of the Yellow River, controlling a drainage area of 694,000 square kilometers, which is 92.3% of the total basin area. The project has a total designed capacity of 12.65 billion cubic meters and aims to provide flood control, sediment reduction, water supply, irrigation, and power generation [9].
黄河山东段河道迎来涨水过程,山东做好调水调沙期间黄河防汛工作
Qi Lu Wan Bao· 2025-06-25 08:20
本次黄河调水调沙流量大、持续时间长,受洪水长时间冲刷影响,山东省黄河部分河段河势可能发生变 化,河道工程可能出险。山东黄河河务局高度重视本次调水调沙工作,在确保防洪安全基础上,充分发 挥调水调沙的综合效益。 提前修订印发调水调沙预案,组织专题会商会进行全面部署;各级开展防汛演练40余次;强化隐患排查 整改,开展徒步拉网式工程普查,摸排防守重点134处,按"一点一策"原则制定了防守方案;统一组织 河势查勘,分析河势变化情况及发展趋势,预判险情,制定抢护方案;借助近3000处视频监控、220余 架无人机对重点防洪工程实行24小时全天候监测,确保险情早预测、早发现、早处置、早消除;开展国 家常备防汛物资维修、保养和试运转,储备石料133万方、铅丝600.6吨、麻绳28.3万吨、编织袋63.6万 条等,确保顶打管用。 调水调沙期间,山东黄河河务局将持续密切关注天气形势变化,及时滚动分析雨水情,加密会商研判, 强化工程巡查防守和24小时值班值守,确保人员安全和工程安全。同时,结合黄河调水调沙大流量过 程,将根据调水安排尽可能增大引水流量,缓解部分市县旱情;相机对黄河三角洲自然保护区实施生态 补水,持续推进生态系统修复提 ...
黄河第30次实施调水调沙 2025年黄河调水调沙正式启动
He Nan Ri Bao· 2025-06-23 23:27
6月23日9时,随着小浪底水库3条排沙洞闸门缓缓开启,3条巨大白色水龙喷涌而出,水库下泄流量加大至 2600立方米每秒,标志着2025年黄河调水调沙正式启动。据悉,这是黄河第30次实施调水调沙。 按照安全可控、统筹兼顾的原则,结合黄河下游抗旱和中游水库腾库迎汛要求,水利部黄河水利委员会自当 日起,通过联合调度万家寨、三门峡、小浪底等水库,启动实施2025年黄河调水调沙。本次调水调沙预计持 续17天左右,排沙量将超1亿吨。整个调水调沙期间,小浪底水库的最大下泄流量将达4600立方米每秒。 作为黄河中下游防洪、水沙调控体系中的关键控制性工程,小浪底水利枢纽控制着黄河91%的径流量和近 100%的输沙量。在调水调沙运用过程中,小浪底水利枢纽将利用水库调节合理的下泄流量,在实现"腾库迎 汛"目标的同时,制造"人工洪水"冲刷河道,减少水库及下游河道淤积,遏制河床抬高。 根据黄河中游河道来水及水库蓄水情况,为增强小浪底水库调水调沙后续动力,充分发挥水库汛限水位以上 蓄水效益,尽量减少对水生生物及其栖息地影响,黄委结合多年调水调沙实践经验,统筹考虑抗旱保灌保 供、腾库迎汛、水库排沙、河道减淤、河口生态补水等目标。 "黄河调 ...