Monitoring method for earth surface environment damage in underground mining area

Abstract

The invention relates to a monitoring method for earth surface environment damage in an underground mining area. The monitoring method comprises the following steps of: researching an earth surface moving law by building an earth surface movement observation station, and establishing a mathematical model between cracks at the front most end of a working surface and a working surface position on the basis of the earth surface moving law so as to scientifically monitor the growth development situation of dynamic cracks; and monitoring the spatial-temporal evolution law of soil water content and soil physiochemical property under different disturbance degrees so as to more completely and scientifically master the soil damage situation in the overall mining-induced process and provide a theoretical foundation for regional land rehabilitation and ecological environment modification.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a monitoring method for surface environmental damage in underground mining areas. Background technique [0002] The main mining area in the sandstorm area is located between the loess hills and the Mu Us Desert in my country, and the desertification and potential desertification land area accounts for about 85% of the total area. The thin topsoil particles overlying the sand layer are relatively loose, and human disturbance or inclement weather will cause them to disperse rapidly and cause soil erosion. With the “strategic westward shift” of my country’s coal mining, it will inevitably have a corresponding negative impact on the ecological environment of the region. The main forms of damage are subsidence, surface cracks and soil quality damage caused by surface movement and deformation. [0003] At present, many scholars have carried out extensive research on t...

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Problems solved by technology

[0006] 1) Due to the existence of aeolian sand layer, the form of land damage caused by mining is obviously different from that in the central and eastern regions, and it is very difficult to select the monitoring position of the damage factor;

[0007] 2) Most of the main production areas of coal mines in windy and sandy areas are rapidly advancing mining, and the spatiotemporal evolution data of damage factors (especially ground fissures and surface water) change rapidly, and it is very difficult to obtain complete information in the whole process of changes

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