The phased goal of underground water pressure exploitation in the water receiving areas of the South-to-North Water Diversion Project was achieved

2022-07-19 0 By

People in Beijing on February 8 (xinhua Yu Lu) the reporter learns from the Ministry of Water Resources, on February 8, Ministry of Water Resources in conjunction with the National Development and Reform Commission, Ministry of Finance, department of natural resources organization in the latest assessment results show that by the end of 2020, the first phase of the middle route of the south-to-north water transfer east urban underground water pressure tapping CaiLiang has more than 3 billion cubic meters, the rally of the groundwater table,The shallow groundwater as a whole reaches the balance of exploitation and replenishment.China water group co., LTD., party secretary, chairman xu-guang jiang said that the first phase of the middle route of the south-to-north water transfer east involves tapping in haihe river basin, huaihe river and the Yellow River in Beijing, tianjin, hebei, jiangsu, shandong, henan and other 6 provinces and cities, an area of 23 square kilometers, population intensive, developed economy, the contradiction between supply and demand of water resources.In 2013, The State Council approved the Overall Plan of Underground Water Pressure Exploitation in the Receiving Area of the First Phase of the East Middle Route of South-To-North Water Transfer Project (hereinafter referred to as the Overall Plan), which clearly stated that by 2020, 2.2 billion cubic meters of overexploitation of urban groundwater will be reduced, and the balance of groundwater exploitation and replenization in urban areas will be basically realized.By 2025, the over-exploitation of groundwater in non-urban areas will be reduced by 1.8 billion cubic meters, the problem of over-exploitation of groundwater in non-urban areas will be alleviated, and the total annual under-exploitation of groundwater will reach 4 billion cubic meters.The latest evaluation results show that from the first phase of the East and Middle route of the South-to-North Water Diversion project to the end of 2020, a total of 3.017 billion cubic meters of underground water has been reduced in urban areas, 136.5% of the near-term target of the Overall Plan, and the over-exploitation of urban areas has been basically reduced. All six provinces and cities have achieved the near-term targets of over-exploitation.Of these, 446 million cubic meters were in Beijing, 123 million in Tianjin, 1.491 billion in Hebei, 506 million in Henan, 284 million in Shandong and 167 million in Jiangsu.Through the integration of urban and rural water supply measures, underground hydraulic mining in rural areas has also achieved certain results.The amount of groundwater exploited in water demand areas has dropped significantly, from 22.8 billion cubic meters in 2014 to 15.4 billion cubic meters in 2020, down 7.4 billion cubic meters.The overall water level of the receiving area stopped falling and rose.According to the data of groundwater monitoring stations in the receiving areas of the National Groundwater monitoring Project, the shallow groundwater level in the receiving areas of the six provinces and cities basically remained stable from 2018 to 2020.At the end of 2020, the average buried depth of shallow groundwater level in the water receiving area is 10.99 m, up 0.30 m compared with that at the end of 2019, with the increase of 0.23 m in Beijing, 0.38 m in Tianjin, 0.17 m in Hebei, 0.68 m in Jiangsu, 0.69 m in Shandong and 0.56 m in Henan.In 2020, the average level of deep groundwater in tianjin, Hebei, Shandong and Henan will rise by 1.94 meters, including 2.51 meters in Tianjin, 1.61 meters in Hebei, 0.69 meters in Shandong and 0.73 meters in Henan.In addition, groundwater mining well management further standardized.In accordance with the principle of “access before closing”, the six provinces and cities in the water receiving areas have steadily promoted the sealing and filling of groundwater exploitation Wells, intensified the shutdown of urban self-provided Wells and agricultural irrigation Wells in the over-exploitation areas, and sealed the groundwater exploitation Wells within the coverage of urban public water supply network.By the end of 2020, a total of 71,724 mechanical Wells had been shut down in water receiving areas, including 38,508 in urban areas (1,631 in Beijing, 3,751 in Tianjin, 16,592 in Hebei, 10,260 in Henan, 4,085 in Shandong and 2,189 in Jiangsu).The level of supervision has been improved by registering, filing and online monitoring self-provided Wells that need to be reserved for use or sealed for use for special purposes.The ecological environment of rivers and lakes along the first phase of the east-central route of the south-to-North Water Diversion project is gradually recovering, Jiang said.Since 2018, through the implementation of measures, such as ecological filling water filling water tapping along the rivers have long and surface area of the river water filling water increased and 348 square kilometers, 967 kilometers before filling water river around 10 km range of shallow groundwater water level rose 0.42 meters, effectively supplement groundwater reserves, the ecological environment of lakes recovery effect is obvious.