Method for repairing and managing coal gangue dump by using coal-based solid waste

Abstract

The invention relates to the technical field of ecological management of a coal gangue mountain, in particular to a method for repairing and managing the coal gangue mountain by using coal-based solid waste. The method comprises the following steps of: sequentially forming a drainage system on the coal gangue mountain, conducting grouting for fire extinguishing, carrying out sealing and isolating, carrying out covering with gangue mixing soil and constructing vegetation. The coal-based solid waste is used in the multiple links such as fire extinguishing of coal gangue, reburning prevention, water conservancy facility construction and greening treatment, and problems are effectively solved. The coal-based solid waste is used as a main raw material to prepare a series of materials for treating the coal gangue mountain, so natural repair materials are saved, and pollution to the environment and damage to land resources caused by solid waste accumulation are avoided.

Description

technical field [0001] The invention relates to the technical field of coal gangue hill ecological treatment, and more specifically, relates to a method for coal-based solid waste to be used for coal gangue hill restoration and treatment. Background technique [0002] With the increase of coal production capacity and the increasing demand for energy from economic development, the annual discharge of coal gangue after mining and washing is on the rise. Therefore, the coal gangue piled up in the open air for a long time not only occupies the land, but also is prone to spontaneous combustion and release SO 2 、H 2 S, CO, NO X Harmful gases such as rainwater entering the groundwater, seriously endangering the health of surrounding residents, is an ecological and environmental protection problem that needs to be solved urgently. At present, in terms of technology for the restoration and treatment of coal gangue hills, the Chinese patent application number CN102251775A "A Method...

AI Technical Summary

Problems solved by technology

The Chinese patent application number is CN108298888A "A Closed Isolation Composition Applied to Gangue Heap Treatment and Its Implementation Method" discloses a method for treating coal gangue hills with a closed isolation composition. Affected by climate conditions such as temperature and humidity, it will affect the follow-up work

None of the above considers improving soil fertilizer efficiency from a comprehensive perspective of combining mycorrhizal fungi and porous carbon-based fillers to stabilize and maintain soil organic matter components to provide suitable conditions for plant growth.

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