Core Viewpoint - Sichuan Shuangma has sufficient supply capacity in its building materials business, with production lines for cement and aggregates, and is expected to benefit from the market demand generated by the construction and operation of the Jiangdai Min project [1] Group 1 - The company has a cement production capacity of 2 million tons and an aggregate production capacity of 5 million tons annually [1] - The construction and operation of the Jiangdai Min project aligns well with the company's building materials business, indicating potential market opportunities as the project progresses [1]

Core Points - The "Yin Da Ji Min" project has officially commenced construction, aiming to address water scarcity in the Chengdu Plain by connecting the Dadu River and the Min River [1][2] - This project is the largest and longest water diversion project in Sichuan's history, with a total construction period of 8 years [1] - Upon completion, the project will provide 1.389 billion cubic meters of water annually by 2040 and 1.523 billion cubic meters by 2050, benefiting 34.13 million people [1] Project Details - The project will consist of a main line and two branches, extending over 260 kilometers through tunnels and pipelines [1] - It will enhance urban and industrial water supply reliability from 90% to 97% and agricultural irrigation reliability to 80% [2] - The water supply area will cover 8 cities and 43 counties in the Chengdu Plain Economic Zone, adding 1.79 million acres of irrigated land and improving 5.91 million acres [1][2] Strategic Importance - The project is a key component of the national water network, optimizing the spatial and temporal distribution of water resources in Sichuan [2] - It aims to support high-quality economic and social development in the Sichuan region and ensure water security for the "Tianfu Granary" [2]

新华社成都11月7日电（记者周相吉、高健钧）11月7日，将大渡河水引入成都平原的"引大济岷"工程正 式启动建设。这项四川历史上投资最大、线路最长的引水工程完工后，大渡河将实现与岷江"握手"形成 双水源，以解决成都平原缺水问题。 四川水发设计公司工程设计二分院院长李智渊说，作为国家水网中的骨干输排水通道之一，"引大济 岷"工程建成后，将使成都平原生活工业供水保证率从90%提升至97%，农业灌溉保证率达80%，实现城 乡供水、灌溉、生态补水及应急水源四大功能协同。 "工程实施后，'引大济岷'工程将与都江堰形成有机整体，全面优化四川省水资源时空分布，对保障成 都平原经济区水安全、推动四川经济社会高质量发展具有里程碑式的深远意义，同时为打造新时代更高 水平'天府粮仓'提供用水安全保障。"四川省水利厅相关负责人说。 [ 责编：袁晴 ] "引大济岷"工程总工期为8年，取水点位于大渡河泸定水电站坝址上游3.5公里处。工程分总干线及南北 两干线，通过绵延260余公里的隧洞、管线等设施，引水至距都江堰水利枢纽直线距离100余公里和40余 公里处的两个交水点。 工程建设任务以城乡生活和工业供水为主，兼顾农业灌溉，2040年工程将 ...

Core Viewpoint - The expansion of the Dujiangyan irrigation area to 11.647 million acres is a significant milestone, but it raises concerns about water resource sustainability due to climate change and human activities affecting the Min River's upstream runoff [1][2][5][7]. Group 1: Irrigation Area Expansion - The Dujiangyan irrigation area will reach 11.647 million acres in 2023, covering 41 counties across 8 cities and benefiting 30 million people [2][4]. - Historically, the irrigation area has expanded from approximately 700,000 acres in the Han Dynasty to over 11 million acres in recent years, with significant growth during the 1950s to 1970s [3][4]. - The irrigation area is projected to further increase to 15.19 million acres in the future, indicating ongoing development [7]. Group 2: Water Resource Challenges - The Min River's upstream runoff has significantly decreased over the past decades, with annual average runoff dropping from 174 billion cubic meters in the 1930s to 132.6 billion cubic meters in the 1990s [6][7]. - The Dujiangyan irrigation area currently relies on 70% of the Min River's water, leading to concerns about over-extraction and potential water shortages [5][7]. - The annual water supply for the irrigation area is projected to face a shortfall of 2.5 billion cubic meters by 2035 due to increasing demand from agriculture, domestic use, and industry [8][10]. Group 3: Solutions for Water Resource Management - The strategy to address water shortages includes both conservation measures and sourcing additional water [9][10]. - Conservation efforts have improved water-saving capabilities by 534 million cubic meters annually, earning the designation of a "water-saving demonstration irrigation area" [10]. - The "Yin Da Ji Min" project aims to divert water from the Dadu River to supplement the Min River, with projected water diversion volumes of 1.539 billion cubic meters by 2035 and 1.809 billion cubic meters by 2050 [11].