Core Points - The Shaanxi Dongzhuang Water Conservancy Hub Project, the only large-scale water conservancy project in China with water diversion and sediment regulation functions, has successfully completed the full-line concrete pouring of its dam ahead of schedule by 8 months [1][3] - This project is part of the 172 major water-saving and water supply projects identified by the State Council and is located in the Jinghe River Valley in Lintong County, Shaanxi Province [3][5] - The project features a concrete double-arch dam structure with a height of 230 meters, a total reservoir capacity of 3.276 billion cubic meters, and a power station with an installed capacity of 110,000 kilowatts [3][5] Engineering Challenges and Innovations - The construction faced challenges such as narrow valley conditions, harsh weather, and complex operations, which were addressed using advanced techniques like rapid excavation of steep slopes and uncoated heavy solidification grouting [5] - The use of three 30-ton cable cranes and an intelligent temperature control system helped achieve multiple records in excavation, pouring, and dam elevation speed, reducing the linear construction period by 3 months [5] Future Impact - Upon completion, the project will enhance flood control standards in the lower Jinghe River from a 10-year return period to a 20-year return period, and will reduce the flood risk of the Weihe River from a 100-year return period to a 50-year return period [7]

Core Insights - During the "14th Five-Year Plan" period, Guangxi has prioritized water network construction as a key support for building a beautiful Guangxi, integrating various water management systems and achieving recognition as a national pilot area for water networks [1][2] Group 1: Water Network Development - Guangxi has established a leadership group for water network planning and construction, focusing on the collaborative development of five networks: flood control and drainage, urban and rural water supply, agricultural irrigation, ecological water, and smart water [1] - Key projects such as the Pinglu Canal and the North Bay water resource allocation project are accelerating, contributing to the construction of the main framework of the water network [2] Group 2: Water Security and Disaster Prevention - The region has improved its flood and drought disaster prevention capabilities, achieving a 74.9% compliance rate for river embankments and successfully managing severe droughts and typhoons this year [2] - The completion of the Datiangxia water conservancy hub and the West River governance project has enhanced water security for economic and social development [2] Group 3: Water Supply and Agricultural Irrigation - Since the beginning of the "14th Five-Year Plan," Guangxi has added 9.5 billion cubic meters of water supply capacity, with rural tap water coverage reaching 91.4% [3] - The region has also improved irrigation efficiency, with the effective utilization coefficient for agricultural irrigation water reaching 0.526, surpassing the planned targets [3] Group 4: Ecological Protection and Economic Growth - Guangxi has addressed 2,432 issues related to river and lake management, with a significant increase in water quality, achieving a 98.2% rate of good water quality in surface water assessment sections [4] - Investment in water conservancy has been increasing annually, with projections for 2025 to exceed 50 billion yuan, and a shift towards diversified financing models [4] Group 5: Smart Water Management - The development of smart water management technologies is underway, enhancing the efficiency of monitoring soil erosion through remote sensing and AI, improving efficiency by over six times [4]

Core Viewpoint - The completion of the last section of the Fengtun Tunnel marks a significant milestone for the Yunnan Province's largest-ever livelihood project, the Dianzhong Water Diversion Project, which aims to alleviate water resource conflicts in the region and improve the ecological environment of highland lakes [1][3]. Group 1: Project Overview - The Dianzhong Water Diversion Project spans three major river basins: the Jinsha River, Lancang River, and Red River, with a total length of 664 kilometers, benefiting over 11.12 million people across six states (cities) including Kunming and Chuxiong [3]. - The Chuxiong section of the project is 153.53 kilometers long, with 91.6% of it consisting of tunnels, and it traverses complex geological areas such as the "Dianzhong Red Layer" and the foothills of the Hengduan Mountains [3]. Group 2: Construction Challenges - The construction of the Chuxiong section faces four major global challenges: deep tunnel construction difficulties, groundwater management issues, crossing fractured fault zones, and dealing with significant soft rock deformation [3][5]. - The Fengtun Tunnel, which is 9.87 kilometers long, is a critical part of the Chuxiong section, with a maximum depth of 630 meters and extreme water inflow reaching 30,000 cubic meters per day [5]. Group 3: Technological Innovations - The construction team developed a "forewarning-dynamic adjustment-precise support" technical system to address the complex geological conditions, utilizing technologies such as TSP detection and transient electromagnetic methods to create a geological "perspective network" for real-time monitoring [5]. - The innovative "micro-step + locking large pipe shed" technique reduced soft rock deformation by 80%, achieving a 100% qualification rate for initial support [5].

新华社昆明10月28日电（记者丁怡全、樊曦）28日，随着中铁十六局承建的凤屯隧洞最后一段岩体 成功爆破，滇中引水一期工程楚雄段实现全线贯通，为工程全线通水筑牢基础。 凤屯隧洞由中铁十六局承建，位于云南省楚雄彝族自治州牟定县境内，全长9.87公里。隧洞穿 越"滇中红层"软岩区，最大埋深达630米。工程建设面临深埋隧洞施工难、地下水处理难、破碎断层穿 越难、软岩大变形应对难等施工难题。自隧洞开工建设以来，建设团队构建"超前预报—动态调整—精 准支护"技术体系，通过瞬变电磁法等技术手段构建地质"透视网"，实时掌握围岩动态，克服了易坍 塌、突泥涌水等多种风险。 【纠错】 【责任编辑:焦鹏】 滇中引水工程是国务院要求加快推进建设的172项重大水利工程之一，工程设计从金沙江取水，途 经丽江市、大理州、楚雄州、昆明市、玉溪市，终点为红河州，输水线路全长约664公里。 ...

Core Viewpoint - The Jiangsu Qinhuai River Flood Control Project is a significant infrastructure initiative aimed at enhancing flood management capabilities in the Qinhuai River basin, addressing historical flooding issues and improving water resource allocation and ecological protection in the region [3][4][9]. Construction Background - The Qinhuai River, a tributary of the Yangtze River, has a total watershed area of 3,103 square kilometers and a length of 175.4 kilometers. The river has historically faced severe flooding due to its downstream outlet being constrained by the Yangtze River's high tide levels, with flood discharge capacity currently falling short by 300 cubic meters per second compared to planning requirements [3][4][9]. Project Significance - This project is included in the Ministry of Water Resources' flood control plans and is crucial for improving the flood disaster reduction system in the Qinhuai River basin, optimizing water resource distribution, and supporting the economic and social development of Nanjing and surrounding areas [4][9][10]. Overall Layout - The Qinhuai East River project features a "2+1+2" layout, comprising the upstream Yunliang River, central river, midstream Xinkai River, and downstream Jiuxiang and Qixiang Rivers, with a total length of approximately 53 kilometers [5][9]. Construction Details and Investment - The first phase of the project involves the renovation of 15.96 kilometers of river channels, with a total estimated investment of 630.884 million yuan (approximately 63.09 billion yuan). Key components include the construction of a new dam and the reinforcement of 19 bridges affected by the river channel renovations [6][10]. Future Work Focus - The project will prioritize three areas: advancing construction for the 2025 early start node, progressing research and design work, and coordinating land approvals and archaeological investigations to ensure timely project execution [11].

Core Viewpoint - The article emphasizes the significant advancements in China's water conservancy infrastructure during the "14th Five-Year Plan," highlighting the construction of the world's largest and most comprehensive water management system, which benefits a vast population [1][21][22]. Summary by Sections Water Infrastructure Development - China has built 95,000 reservoirs, creating a robust safety barrier, and has implemented 200 major water diversion projects that support millions of households [1][21]. - The South-to-North Water Diversion Project has transferred over 83 billion cubic meters of water, benefiting 195 million people in major cities along the route [1]. Major Projects Under Construction - The "Yinjiang Supplementing Han" project, part of the South-to-North Water Diversion initiative, involves creating a nearly 200-kilometer underground corridor to facilitate water flow from the Yangtze River to the Danjiangkou Reservoir, with an annual capacity of 3 billion cubic meters [5][10]. - The construction of the Guxian Water Conservancy Hub in the Yellow River region is progressing, with efforts to address complex geological conditions [8][10]. Technological Innovations - The "Jianghan Ping'an" shield tunneling machine, equipped with advanced technologies, is being utilized for the underground construction of the Yinjiang project, showcasing innovations in engineering [7]. Environmental and Social Impact - The article highlights the ecological restoration of rivers and lakes, which has improved the living conditions for residents, creating green corridors and enhancing biodiversity [13][20]. - The revival of the Nandao Spring in Shanxi, which had previously dried up, illustrates the positive outcomes of water management efforts [16][18]. Investment and Economic Impact - Water infrastructure investment reached over 1 trillion yuan in 2022, marking a historic milestone and reflecting the government's commitment to enhancing water management capabilities [21]. - The rural water supply system has been significantly improved, with a projected 96% coverage of tap water in rural areas by the end of the "14th Five-Year Plan" [21].

Core Viewpoint - The completion of the Yunwuzhai tunnel marks a significant milestone in the construction of the Tizikou irrigation district phase one project, which is crucial for supporting the economic and social development of drought-affected areas in northeastern Sichuan and revolutionary old districts [1] Group 1: Project Details - The Yunwuzhai tunnel has a total length of 2,928 meters and a designed water flow capacity of 6.65 cubic meters per second [1] - The Tizikou irrigation district phase one project consists of 17 channels, with a total length of 375.59 kilometers [1] - Upon completion, the project is expected to provide an average annual water supply of 396 million cubic meters [1] Group 2: Construction Challenges - The tunnel's geological conditions are complex, characterized by fractured rock, poor stability, abundant groundwater, and high gas risks, making construction difficult and safety risks high [1] - The project team has implemented strict safety measures, including the "one blast three checks" system and "three-person chain blasting system," along with advanced geological forecasting to ensure safety during construction [1] Group 3: Future Outlook - The completion of the tunnel is seen as a critical step in advancing the overall project construction, which is part of the "project attack year" initiative [1] - The project is a key component of Sichuan's "six horizontal and six vertical" backbone water network, aimed at enhancing water supply and supporting regional development [1]

Group 1: Project Progress and Impact - The second phase of the Yinhanshui project is progressing rapidly, with the northern trunk line expected to be fully connected by the end of this year [2] - The Yinhanshui project has supplied 1.19 billion cubic meters of water to Xi'an in the first half of this year, accounting for over 50% of the main urban area's water consumption [1] - Since the project's inception, it has supplied over 3 billion cubic meters of water to Xi'an, significantly enhancing its functions in water supply, power generation, flood control, and ecology [1] Group 2: Water Resource Management and Investment - Water resources are crucial for national economic and social development, with significant investments in water infrastructure in Shaanxi during the 14th Five-Year Plan period [3] - As of June 30 this year, Shaanxi has completed water investment totaling 192.85 billion yuan, with numerous key water projects underway [8] - The East Zhuang Water Conservancy Hub is the only water conservancy project in the country under construction that has water diversion and sediment regulation functions, with completion expected by the end of 2026 [8] Group 3: Agricultural Support and Irrigation - The Jiao Kou Water Diversion Irrigation District has provided stable water sources for agriculture, allowing crops to withstand drought conditions [4] - The irrigation district has diverted a total of 360 million cubic meters of water this year, irrigating 3.3 million acres, setting a record since its establishment in 1970 [7] - The provincial irrigation projects are essential for ensuring food security and supporting agricultural production in the region [6]

Core Insights - Over the past five years, China has significantly accelerated the construction of water conservancy projects, achieving a historic investment milestone of over 1 trillion yuan in 2022, marking a continuous three-year record-breaking trend [1] Infrastructure Development - China has enhanced its flood and drought disaster prevention system, with a flood control reservoir capacity of 185.6 billion cubic meters, protecting a population of 660 million [1] - The country has built 95,000 reservoirs, with a total capacity exceeding 1 trillion cubic meters, leading the world in the number and capacity of reservoirs, including high dams [1] Water Supply and Irrigation - A large number of water source, diversion, and irrigation projects have been constructed, with a total water supply capacity reaching 900 billion cubic meters [1] - China has established the world's largest rural centralized water supply system, with a projected rural tap water coverage rate of 96% by the end of the 14th Five-Year Plan [1] Comprehensive Water Management - The country has formed the largest, most comprehensive water conservancy infrastructure system globally, addressing flood control, water supply, irrigation, and ecological needs [1]

Core Insights - During the "14th Five-Year Plan," China's water conservancy construction achieved multiple world records, showcasing the significant investment and development in this sector [1] Investment and Infrastructure - In the past five years, China has significantly advanced water conservancy infrastructure, with investment in water conservancy construction exceeding 1 trillion yuan in 2022, marking a historic milestone and breaking records for three consecutive years [1] - The total storage capacity of reservoirs in China has reached over 1 trillion cubic meters, with 95,000 reservoirs built, making it the highest in the world in terms of types, numbers, and high dam constructions [1] Disaster Prevention and Water Supply - China has improved its flood and drought disaster prevention system, with a flood control reservoir capacity of 185.6 billion cubic meters, protecting a population of 660 million [1] - The water supply capacity of water conservancy projects has reached 900 billion cubic meters, and by the end of the "14th Five-Year Plan," the rural tap water coverage rate is expected to reach 96%, establishing the largest rural centralized water supply system globally [1] Comprehensive Water Management - China has formed the world's largest, most comprehensive water conservancy infrastructure system, addressing all areas of demand including flood control, water supply, irrigation, and ecological needs [1]