四川省“引大济岷”水利工程即将从蓝图走向现实

Core Points - The "Yin Da Ji Min" project is a major water diversion initiative in Sichuan, aimed at addressing the imbalance in water resource distribution across the province, particularly benefiting the Chengdu Plain Economic Zone [2][3][6] - The project is expected to supply an average annual water volume of 13.89 billion cubic meters by 2040 and 15.23 billion cubic meters by 2050, with a total investment of approximately 536.23 billion yuan [3][16] - The project has a long history, dating back to the 1970s, and has recently gained momentum with its inclusion in multiple national planning documents [4][6] Water Resource Imbalance - Sichuan experiences significant seasonal rainfall, with 70% of precipitation occurring from May to October, leading to a stark contrast in water availability between regions [2] - The Chengdu Plain, which accounts for 80% of the province's economic output, has less than 1,000 cubic meters of water per capita, highlighting the urgent need for the "Yin Da Ji Min" project [2] Project Overview - The project is designed to have a water diversion capacity of 80 cubic meters per second, with plans to increase irrigation areas by 1.79 million acres and improve 5.91 million acres of existing irrigation [3] - The construction period is estimated to last 8 years, with the project being a key component of Sichuan's water network development [3] Historical Context - The concept of diverting water from northwest Sichuan to the Chengdu Plain has been proposed for over fifty years, with various plans emerging since the early 2000s [4][6] - Recent developments since 2012 have seen the project included in national strategies, leading to the establishment of a project command center in 2021 [6] Technical Challenges - The "Yin Da Ji Min" project faces numerous technical challenges, including traversing 29 geological fault zones and addressing 48 major technical issues [7] - Significant geological surveys are required, involving drilling 521 boreholes with a total depth of 39,500 meters, often in difficult terrain [7][9] Community and Workforce Involvement - The project has involved extensive community engagement, including land acquisition and relocation efforts, with over 600 personnel participating in surveys [9] - The dedication of the workforce is highlighted by the intense work schedules and commitment shown by team members during the design phase [10][11] Recent Developments - As of September 2023, the project has entered the feasibility study approval stage, with the feasibility report already approved by the National Development and Reform Commission [16] - The project is not only a water management initiative but also a significant development and livelihood project for the region [16][17]