Mine geological environment ecological restoration

3. Alleviate social contradictions and solve the problem of employment for the masses

The ecological restoration of mine geological environment can improve the working environment of mine workers, reduce the land damage caused by mining engineering, reduce the loss and harm caused by mining, and ensure the safety of mine production. Through the construction of dry land, forest land and grassland, the restoration of surface vegetation can reduce the damage of ecological environment, and play a good role in improving the mine environment and the land use structure of the surrounding area, so as to promote the coordinated development of the local area; After the restoration is completed, the land management in the governance area requires more staff, so more employment opportunities can be provided for the personnel in the governance area. Therefore, mine geological environment ecological restoration is related to the national economy and people's livelihood, not only has great significance for the development of production, but also has great significance for the stability, unity and stable development of the whole society.

4. Achieve sustainable development of land area and mining area

Mining activities are one of the important factors that cause environmental damage. Mining activities cause serious damage to the ecological system within the territory and mining area, and the subsequent development and utilization of the mining area and the sustainable life of the people are not guaranteed. Only by carrying out ecological restoration of the geological environment of the mine can the damaged land, rivers, occupied and polluted resources be restored to their usable state. Only by successfully realizing the ecological restoration of the geological environment of the mine can the people in the mining area, as a part of the territorial life, get a sustainable guaranteed quality of life. It will be an important part to ensure the sustainable development of the area around the coal mine, so it has important social benefits.

(3) The main framework of mine geological environment ecological restoration

The ecological restoration of mine geological environment is aimed at the problems of mine geological environment and mine ecological environment. In each subdivision of the problem, the mining geological environment ecological restoration has different treatment attitudes, holding different restoration ideas, and therefore developed into different ecological restoration technologies, the following brief overview of the ideas to deal with different issues.

1. Problems of mine resources

The essence of mine resource problem is the resource related problem brought by mine exploitation. These resource problems include the utilization and storage of coal gangue, the planning of construction land in mining area and the damage and reconstruction of artificial structures in mining area. From a certain point of view, this kind of problem is more inclined to the planning problem, trying to better realize the utilization of mine resources through planning means. For example, the underground filling of coal gangue is used to avoid the accumulation of coal gangue mountains, the sustainable utilization of construction land after the closure of mining pits, the construction of irrigation facilities and road configuration for each reconstructed field in accordance with scientific planning methods, and the reasonable decision on the amount of vegetation planting during ecological reconstruction. They are more like the same kind of problems that need to rely on scientific operational research and land planning knowledge to complete.

2. Mine hydrogeological environment problems

The problem of mine hydrogeological environment refers to the change of mine hydrologic environment, water resources structure, water quality and so on. Water resource is an important part of mining environment, so it is necessary to separate it from the mining environment. The solution of hydrogeological environmental problems mainly depends on real-time detection, and enough hydrological monitoring points must be equipped. At the same time, existing hydrological problems need to be remedied and solved in time. For example, aquifer destruction caused by well mining, subsidence water, surface water quality and water quantity monitoring and other problems, in fact, the problem of goaf water is also more discussed in the ecological reconstruction and land reclamation issues (Pei Wenming et al., 2018). The problems of mine hydrogeological environment require efficient monitoring and sound evaluation system. Besides, water conservation mining, grouting and plugging are often used in this field. In the face of changes in the surface hydrogeological environment, researchers are more likely to complete ecological restoration according to local conditions. For example, the water-logged area caused by collapse is more likely to be directly restored to fish ponds by digging deep and filling shallow layers.

3. Mine surface geological hazards

Mine surface geological disaster is an extremely serious problem caused by mining. In addition to avoiding the areas with high incidence of geological disasters in advance in the process of land planning and management and mine construction, it mainly relies on the ground monitoring technology with high timeliness and precision. For example, geological hazards in mines can be monitored with high precision through InSAR to facilitate timely population evacuation, land planning and management.