Matian Phosphorus Mine Pit has been abandoned for 30 years and has a water storage capacity of 2 million cubic meters. Photo by Chen Fei, all-media reporter of Changsha Evening News
, Changsha Evening News, August 28 (all-media reporter Hong Hong) Recently, the news that the city and district water conservancy departments and Yuchangping Town diverted water from two abandoned mines (holes) and protected irrigation have attracted readers' attention. Some readers like "There is no waste in the world", thanking that the abandoned mine (hole) has no other use, and some readers are curious whether the water quality of the mine meets the farmland irrigation standards. On the 26th, the reporter visited the abandoned mine (hole) in Yuchangping Town.
water quality meets the standards, pineapple grass carp grows to 40 to 50 kilograms and weighs
The abandoned mine (hole) that diversion and irrigation is the original Matian Phosphorus Mine located at the junction of Matian Village and Quanshuihu Village, and the other is the original Jincheng Mine Cave located in Quanhong Village. Among them, the Matian Phosphorus Mine was depleted in 1991 and its production has been suspended for more than 30 years; the Jincheng Mine Cave was originally used to mine limestone , and has been suspended for 4 years.
"What is the water quality? You can observe it with your own eyes first." On the 26th, Zhang Jianguo, secretary of the Party Branch of Quanshuihu Village, Yuchangping Town, led a reporter to visit on the spot. At the site of the abandoned mine in Matian, the huge open-pit mine is like a mirror. The surrounding mountains have naturally re-green and are reinforced with slope protection. From time to time, birds have passed by the water. The abandoned mine cave in Jincheng is in a mountain. As soon as the reporter entered the cave, his body felt that the temperature instantly dropped to more than 20 degrees Celsius, as if he had entered an "air-conditioned room". The cave was deep and bottomless, and the water was clear and cool.
Does the water quality meet the standards for farmland irrigation water? Around August 19, the Yuelu District Water Resources Bureau organized relevant experts from the Environmental Protection, Geology and Hydrology departments to visit the Matian Phosphorus Mine abandoned mine pit, and invited professionals from Hunan Analysis and Testing Center Co., Ltd. to come for water collection and inspection.
reporter checked the latest " Farmland Irrigation Water Quality Standard " released by the Ministry of Ecology and Environment last year and the State Administration for Market Regulation, showing that the water used for farmland irrigation must meet the standards in more than ten projects such as pH value, suspended matter, chloride , sulfide, total salt quantity, total lead, total cadmium, and total mercury. "The water quality of these two water sources is tested to meet the irrigation water standards." Wen Liang, director of the Yuelu District Water and Drought Disaster Prevention Center, introduced that for example, the pH values of the two water sources are 7.5 and 7.6 respectively. In the national standard range of 5.5 to 8.5, the sulfide content per liter of water is 0.005 mg, which is lower than the national standard of ≤1, and the total lead, total cadmium and total mercury content is also lower than the upper limit of the national standard.
Zhang Jianguo said that as the abandoned mines of Matian became the original ecological "reservoir", some villagers once put fish fry into the water, "Now the large fish and grass carp weigh forty or fifty kilograms!"
is not easy to diversion, and 24-hour pumping water to ensure irrigation of 10,000 mu of farmland
Bairuopu Town is a key town in grain production. The Baqu River in the territory has been cut off due to continuous drought, and the farmland along the line is almost waterless. Previously, the town’s head anxiously found the water conservancy department, hoping that the upstream spring water reservoir could increase water discharge and solve the problem of drought-resistant water sources. However, the spring water reservoir is an important source of water for residents in nearby streets and towns, and the supply is very tight. Even though 500,000 cubic meters of water have been dispatched to support the downstream irrigation maintenance, 10,000 mu of farmland still does not quench thirst, and other water sources are urgently needed.
"The abandoned mine of Matian is close to the Baqu River system, with a water storage capacity of about 2 million cubic meters. The water storage capacity of the abandoned mine of Jincheng is also 2 to 3 million cubic meters. We can set up units to increase the drainage to pond and dam, and send water downstream through the water system to solve the drought problem of 10,000 mu of farmland in Yuchangping Town and Bairuopu Town." Pan Xiongjian, director of the Yuelu District Water Conservancy Bureau, introduced.
Jincheng abandoned mine cave is located in the mountain and is far away from the ditches, so it is relatively difficult to divert water. It took four or five days to install a water pump, an booster pump, and lay water pipes. On the 19th, the construction unit's excavator repaired a 300-meter construction walkway; on the 20th, the power department of Hunan Xiangjiang New District urgently set up a transformer, and the first 45-kilowatt water pump was powered on and pumped; on the 21st, two new water pumps with a total capacity of 90-kilowatt water pumps were added; on the 22nd and 23rd, a 90-kilowatt water pump was added respectively... The water from the abandoned mine in Jincheng finally flowed into the downstream farmland.
html At noon on the 126th, under the shade of the tree next to the water diversion project of the Matian abandoned mine, Liu Wei, technician of Hunan Changchang Electric Pump Technology Co., Ltd., was on duty.An electric fan, a piece of floor plank, and a bottle of mineral water are his minimalist equipment on duty. On the side, five high-power water pumps are pumping water tightly. "I have been on duty here for almost a week with my colleagues. I have shifted 24 hours a day and can pump about 100,000 cubic meters of water a day.""It's a pity that I'm digging water in time, so my field has been saved." In the past few days, as the clear water flows into the rice fields, Zhang Boquan, a large grain grower in Yuchangping Town, finally relaxed his frown. Hu Haibin, deputy mayor of Yuchangping Town, couldn't help but sigh: "Green water and green mountains are gold and silver mountains. Abandoned mine pits (holes) turn waste into treasures, and bring 'life-saving water' to arid farmland. We should still keep them well and do a good job of repairing and managing them."
