新华社武汉10月11日电 题：汉江这轮大洪水，缘何"悄无声息"？ 新华社记者李思远 秋风紧，汛情急。9月以来，长江第一大支流——汉江5场编号洪水接踵而至。在水利部门调度下，科技赋能、智慧防汛，汉江中下游站点无一 超警，最终将大洪水"消弭于无形"。 10月6日，丹江口水库开启8孔加大向汉江中下游下泄流量。（程亚东 摄） 科技成为当今防洪的"利器"。在"数字孪生丹江口工程"的基础上，今年5月13日，丹江口水利枢纽水利测雨雷达在汉江流域投入试运行，助力 水旱灾害防御迈向更加精准化、智能化。 陈桂亚介绍，通过应用水利测雨雷达和共享气象部门的气象雷达，汉江上游短临降雨预报精度显著提升，为快速滚动会商提供精确数据，有力 支撑汉江水库群精细化防洪调度。 防汛专家介绍，此次汉江秋汛防御也是洪水资源化的一个典型案例。由于8月份之前汉江流域发生严重干旱，来水极枯，水库运行水位偏低， 在应对汉江1号至4号洪水过程中，纳入联合调度的汉江上游水库群累计拦洪117亿立方米，其中南水北调中线工程的"大水缸"——丹江口水库 拦蓄了85亿立方米洪水。 "把秋汛防御和汛后蓄水结合统筹，目前，丹江口水库已经接近170米满蓄目标，可为下一个年度的南 ...

Core Viewpoint - The article discusses the ongoing impact of Typhoon "Yangliu" and extreme rainfall in various regions of China, emphasizing the need for continued flood prevention measures despite the end of the critical flood prevention period known as "Qixiang" [1][2]. Group 1: Flood Situation and Response - The "Qixiang" period has seen extreme rainfall in northern regions, with 330 rivers experiencing floods above warning levels, and 22 rivers recording the highest floods since records began [2]. - Three typhoons made landfall during the "Qixiang" period, which is one more than the average for this time of year, affecting 13 provinces and causing significant rainfall and flooding [2]. - The flood situation has varied across regions, with some areas experiencing rapid water level rises, such as the North Luo River, which saw a 10.4-meter increase in just 11 hours [2][7]. Group 2: Future Weather Predictions - Forecasts indicate that from late August, regions including Northeast, North China, and South China will experience above-average rainfall, with some areas expecting 30% to 60% more precipitation [3]. - In September, it is anticipated that 10 to 11 typhoons will form in the Northwest Pacific and South China Sea, with 2 to 3 expected to impact or land in China [3]. Group 3: Technological Support in Flood Prevention - The Ministry of Water Resources has enhanced monitoring and forecasting capabilities through advanced technologies, including satellite and radar systems, to improve flood prediction accuracy [4][5]. - During recent flood events, the use of modern hydrological monitoring equipment, such as drones and radar, has significantly improved data timeliness and forecasting precision [4][5]. Group 4: Water Engineering and Management - During the "Qixiang" period, 1,388 large and medium-sized reservoirs were utilized to store 146.5 billion cubic meters of floodwater, effectively reducing downstream flood pressure and preventing the displacement of over 1.06 million people [7]. - The Ministry of Water Resources has focused on the safe operation of water engineering projects, employing advanced technologies to monitor dam conditions and prevent risks such as dam failure [8].

Core Viewpoint - The use of drones by the company Beijing Badaling Low-altitude Technology Development Co., Ltd. is enhancing flood prevention efforts in the Yanqing District of Beijing, particularly in response to rising water levels due to recent heavy rainfall [1][2]. Group 1: Company Operations - The company has deployed 25 drone nests across 18 key areas in Yanqing District for flood monitoring [2]. - Drones can manage flight plans automatically or be remotely controlled for immediate tasks, generating detailed reports upon detecting anomalies [2]. - From August 2 to 3, the drone nests completed 21 flights totaling 8 hours, while emergency teams conducted 41 flights totaling 16 hours, identifying 24 potential post-disaster hazards [2]. Group 2: Technology and Monitoring - The drones are equipped with high-definition cameras to monitor risk areas, such as water edges where people may gather [1]. - The integration of intelligent drone nests and rapid response teams creates a comprehensive monitoring network for flood prevention [2]. - All identified issues, including images and coordinates, are promptly reported to relevant authorities for quick resolution [2].

Core Viewpoint - The article discusses the proactive measures taken by Sichuan province to manage flood risks during the main flood season, emphasizing the use of advanced technology and scientific water management strategies to mitigate the impact of heavy rainfall and potential flooding [3][8][10]. Monitoring and Early Warning - Sichuan has implemented advanced monitoring systems, including phased upgrades to rainfall radar technology, to predict risks of mountain floods and mudslides, enhancing the ability to respond to severe weather events [5][6][7]. - Real-time rainfall data from over 50 kilometers away is utilized to assess flood risks, allowing for timely evacuations of affected populations [6][7]. Flood Response - The province has effectively managed floodwaters through coordinated operations of key water infrastructure, such as the Zhipingpu Reservoir, which has significantly reduced peak flood flows by 60% [8][10]. - The combined efforts of various water management projects have successfully lowered water levels in critical areas, preventing severe flooding in urban centers [9][10]. Risk Assessment - The use of high-tech diagnostic tools for monitoring dam safety has been introduced, moving away from traditional manual inspections to a more data-driven approach [11][12]. - The province is also focusing on enhancing monitoring capabilities for sudden natural disasters like mountain floods and mudslides through innovative technologies [13]. Water Resource Management - Despite current flood management successes, concerns about potential drought conditions in the future have prompted efforts to ensure adequate water reserves are maintained [14]. - As of early July, Sichuan's water conservation efforts have resulted in over 70 billion cubic meters of stored water, providing a buffer against possible drought scenarios [14].

Group 1 - The core viewpoint is that Fugu County in Yulin City, Shaanxi Province, is actively building a collaborative system of "human defense + technical defense + physical defense" to enhance flood prevention efforts through technological innovation [1] - The use of drone technology for daily inspections of reservoirs and rivers has significantly improved the efficiency and safety of flood response, allowing for quick assessment and action in case of emergencies [1][3] - Automatic monitoring stations and video surveillance have been established at key locations, providing intelligent early warning capabilities to detect potential hazards and ensure timely responses [3] Group 2 - Fugu County has invested over 2 million yuan to establish 20 water level video monitoring stations equipped with radar water level gauges and video monitoring, enabling real-time data collection and 24-hour monitoring of water conditions [3][4] - A comprehensive defense system has been developed, including 55 specialized plans for flood and mountain flood prevention, alongside public education efforts that have distributed over 5,000 flood prevention knowledge manuals [4] - The county's water conservancy bureau emphasizes the importance of continuous optimization of monitoring and early warning systems to ensure preparedness against potential disasters [7]

Core Viewpoint - The conference held from July 2 to 4, 2025, in Ningbo, Zhejiang, focused on leveraging technology to enhance safety measures during flood seasons on highways, gathering experts from various fields to discuss innovative solutions for emergency rescue and traffic management during floods [1][3]. Group 1: Conference Highlights - The event explored emergency rescue and traffic management during flood seasons, emphasizing meteorological forecasting, risk assessment, collaborative rescue efforts, technological flood prevention, and emergency response standards for highway structures [3]. - Experts engaged in discussions aimed at improving disaster prevention and mitigation capabilities, sharing emergency response experiences, and enhancing management mechanisms for flood rescue and traffic continuity [3][6]. Group 2: Technological Innovations - The conference highlighted the impact of information technology, including artificial intelligence, big data, and cloud computing, on modernizing transportation, with a focus on "smart transportation," "technological flood prevention," and "intelligent empowerment" [3][6]. - A site visit to the Zhejiang Transportation Group's comprehensive emergency base showcased advanced flood command systems and smart management platforms, featuring demonstrations of drones, IoT devices, and specialized vehicles [3][5]. Group 3: Emergency Response Framework - The comprehensive emergency base constructed by the Shanghai-Hangzhou-Ningbo Company serves as a regional emergency support hub, crucial for major highway emergency tasks, including command centers and equipment storage [5]. - The company has adopted a flood prevention strategy centered on "prevention first, combined prevention and control, technology empowerment, and rapid response," resulting in significant improvements in flood response capabilities [6].