Focus on the geological environment management of Hunan mine

Chenzhou City in Hunan and Shaodong Shaoyang City, is a famous hometown of non-ferrous metals, a plaster because of the rich and renowned. For decades, they have provided abundant resources for national economic construction. But today, the geological environment problems caused by mining development have become an unbearable pain in local economic and social development.

At the beginning of July, the reporter went to the investigation team with the National People's Congress to go to Zhangzhou and Shaodong to investigate the problem of mine geological environment management in Hunan Province.

Mine scar

Shaodong County is located in the hinterland of Hunan Province and is an old industrial city.

Shao Dong is rich in gypsum. Since the 1960s, 34 mines have been completed and put into operation within the area of ​​less than 18 square kilometers around the city. Although these mines were closed down 2000 years ago, due to long-term irregular mining, large areas of untreated gobs were left behind.

“We have farmers using tractors to plow the fields. After the lunch break, we return to the fields and the tractors are gone. There is also a professional fish farmer who has a pond with more than 10 acres of water and has more than 10,000 fish. It can be overnight. The water is gone, the fish is gone. A family of three generations crying at home. This is a disaster caused by the collapse of the ground." Jiang Shi is a representative of the National People's Congress from Shaodong. At this year's National People's Congress, his suggestion is directed at Shao Dong. The geological environment of the mine was raised. On July 5, when he introduced the situation to the research team, his strong local voice was full of worries.

Now, these untreated mined areas have become a major hidden danger to the lives and property of Shaodong people and their economic and social development. According to Jin Dongqiu, deputy magistrate of Shaodong County, since the 1980s, mines in the gypsum mines in Shaodong County often have accidents such as water inrush from mines, especially since the 1990s, the goafs have entered the peak of ecological geological environment. Ground collapse, subsidence, cracks and other incidents continue to occur. A large number of paddy fields cannot be cultivated, ponds become wasteland, and the lives and property of residents within the goaf are seriously threatened. In the past 20 years, the goaf of Shaodong gypsum mine has sunk 44 times, the subsidence area is 113 hectares, and the houses are cracked 461, causing 54 dangerous houses, 26 collapsed houses, affecting the living of 8350 people, 40 hectares of paddy fields can not be cultivated, 8 ponds Dry, 220 acres of paddy fields without water irrigation, 2,500 water supply pipelines, underground pipelines were destroyed, causing serious impact and loss to residents' lives and industrial and agricultural production.

Shaodong’s problem is not a case in Hunan Province.

Hunan's ore-forming geological conditions are superior, spanning Nanling, Xiangxi-Exi, and Hangzhou-Hangzhou, which are the three major national mineralization zones. It is a famous “hometown of non-ferrous metals” and “hometown of non-metallic minerals”. At present, there are 8,289 mining enterprises and 440,000 mining employees in the province. The output value of the mining industry and its extension processing industry accounts for about 35% of the total industrial output value of the province.

Rich resources have brought serious mining geological environment problems to Hunan while creating wealth. According to the survey, 1152 mines in Hunan Province caused geological disasters such as ground collapse, landslides, collapses and mudslides due to mining activities, accounting for 16% of the total number of mines in the province. The geological disasters induced by mining activities in the province have caused more than 300 deaths, resulting in economic losses of 726 million yuan. The province's mining development occupied 23,008 hectares of damaged land, including 3,623 hectares of arable land, 1,015 hectares of forest land, 1,353 hectares of grassland and 7017 hectares. The total annual discharge of groundwater in the mines in the province exceeds 180 million cubic meters. 725 mines have caused damage to the groundwater system and water resources crisis due to mine drainage. Due to mining, 1.9 villages have difficulty drinking water in 896 villages, and 12,000 hectares of land are difficult to irrigate. More than 1,700 wells dried up. In 2009, the province's mines discharged 50.47 million tons of waste slag, 664 million cubic meters of wastewater, and 8152 hectares of pollution. The environmental pollution of mining wastewater and waste slag is more prominent, affecting industrial and agricultural production in mining areas. These problems are largely triggered by historical mining activities.

On July 6, the research team went to Baoyuan Mining Area in Zixing City. This is a state-owned large state mine. Entering the mining area, the car slowly moves along the rolling road. On both sides of the road, there are residential buildings, shops, and schools. Like all the old mining areas, this is a mining area with complete social functions. Already in the summer vacation, a group of dark-skinned children chased and screamed on the side of the road, cheerful laughter, whispering in the sky.

The children do not know that this side raises their own happy land, and there are serious geological hazards. Under the influence of mining under the slope, the landslide caused by the downs and downs of the mountain caused by the heavy rain in the flood season seriously endangered more than 520 people in 125 buildings in 7 buildings. And the safety of life and property of more than 500 students and teachers. At the moment, the landslide control project is in full swing. At the scene, some locals pointed out to us, because the ground subsidence caused by the goaf, the original flat land, turned into a ladder with a height difference of more than 1 meter.

The view from across the Landslide site, on a hillside and saw large tracts of coal waste rock pile along the slope, the foot is to shuttle between vehicles and pedestrians and road Schroder Schroder quietly flowing river. “In the Baoyuan and Shigong mining areas on the upper reaches of the Baoyuan River, the coal gangue abandoned by the long-term mining is piled up along the slope, and the flooding into the Baoyuan River during the flood season every year has already damaged a large number of good fields in the downstream Sandu Town and Xianghua Township, and endangered the The life and property of the people living on both sides of the river are safe; the landslide in the Shigong mining area has caused serious damage to the Baoyuan Highway, and the coal gangue piled up on the slope has fallen downhill, jeopardizing the safety of life and property of passing vehicles and personnel.” Mine Geology of Baoyuan Mining Area

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