Group 1 - The core viewpoint of the articles highlights significant advancements in China's water conservancy infrastructure construction since the start of the 14th Five-Year Plan, with investments exceeding 1 trillion yuan for the first time in 2022 and projected to reach 13.529 billion yuan in 2024, totaling over 54 trillion yuan by the end of the plan, which is 1.6 times that of the previous five-year plan [1] - Since the beginning of the 14th Five-Year Plan, 172 major water conservancy projects have been initiated, optimizing the layout, structure, function, and system integration of water infrastructure [1] - By the end of 2024, China will have built 95,000 reservoirs, 200 large and medium-sized water diversion projects, 6,924 large and medium-sized irrigation areas, and 318,000 kilometers of embankments, forming the world's largest and most comprehensive water conservancy infrastructure system [1] Group 2 - The Dashi Gorge Water Conservancy Hub Project, a major national water conservancy project, has successfully begun water storage, featuring a maximum dam height of 247 meters, setting a world record for concrete-faced rockfill dams [2][5] - The project plans to install three 250,000-kilowatt turbine generator sets, with a total installed capacity of 750,000 kilowatts, capable of producing over 1.8 billion kilowatt-hours of clean electricity annually, sufficient to meet the annual electricity needs of 650,000 households [2] - The project employs "smart construction" techniques to address various challenges, including high seismic intensity and rapid flood discharge, utilizing real-time data for dynamic reservoir management and health monitoring of the dam [5] Group 3 - The Yunnan Central Water Diversion Project has made significant progress, with the successful construction of the Qujiang inverted siphon, marking a breakthrough in this major national water conservancy project [6] - This project is the largest water diversion project under construction in China, spanning 664.326 kilometers, with an average annual water diversion capacity of 3.4 billion cubic meters, benefiting over 11 million people along the route [9] - The Chongqing Zhaodu Reservoir Project has successfully completed the first tunnel, enhancing regional water supply and irrigation capabilities while serving as a flood control barrier for the surrounding areas [13]

Core Points - The Chongqing Zhaodu Reservoir project has successfully completed the first water conveyance tunnel, marking a significant milestone in the construction of this major water conservancy project [1][3]. Group 1: Project Overview - The Chongqing Zhaodu Reservoir is one of the 172 key water-saving supply projects and one of the 150 major water conservancy projects approved by the State Council, classified as a Class II large-scale water conservancy project [3]. - The project consists of a hub project and a water conveyance project, with the dam having a normal storage level of 375 meters and a total reservoir capacity of 201 million cubic meters [3]. - The water conveyance system includes a main channel, left channel, and right channel, with a total length of approximately 94 kilometers, impacting multiple districts in Chongqing [3]. Group 2: Tunnel Details - The completed tunnel, known as the Duoduo Stone Tunnel, is located near the Sanjiang Street in the Qijiang District, with a total length of 4,098 meters and a cross-section shaped like a city gate [3]. - The tunnel has a bottom width of 2.8 meters and a net height of 3.56 meters, serving as a crucial route connecting the upstream Wengjiagou siphon and the downstream Dahuigou box culvert [3]. Group 3: Strategic Importance - Upon completion, the Zhaodu Reservoir will act as a flood control barrier for the Qijiang urban area and surrounding towns, significantly enhancing regional water supply and irrigation capabilities [3]. - The project also aims to provide ecological protection and power generation benefits, playing a vital role in improving the water network layout in Chongqing and supporting the development of the Chengdu-Chongqing economic circle [3].

Core Insights - The Chongqing Zhaodu Reservoir project has successfully completed the first tunnel, marking a significant milestone in the construction of this major water conservancy project [1] - The reservoir is part of China's national water-saving and supply initiatives, classified as a Class II large-scale water conservancy project, with a total storage capacity of 201 million cubic meters [1] - The project aims to enhance flood control, irrigation capacity, and ecological protection in the region, contributing to the development of the Chengdu-Chongqing economic circle [1] Project Details - The Zhaodu Reservoir project consists of a hub project and a water conveyance system, with the dam's normal water level set at 375 meters [1] - The water conveyance system includes a main canal, left canal, and right canal, totaling approximately 94 kilometers in length, impacting multiple districts in Chongqing [1] - The completed tunnel, known as the Duoduo Stone Tunnel, is 4,098 meters long and serves as a critical route connecting upstream and downstream water systems [1] Strategic Importance - Upon completion, the Zhaodu Reservoir will serve as a flood control barrier for the Qijiang urban area and surrounding towns, significantly improving regional water supply and irrigation capabilities [1] - The project is expected to play a vital role in enhancing the water network layout in Chongqing and supporting the strategic development of the Chengdu-Chongqing economic circle [1]