A kind of material and method for remodeling water-insulating layer of dump site in open-pit mine

Abstract

The invention discloses a remodeling material and method for a water-repellent layer of a dumping site in an open pit mine, and is applicable to the field of coal mining water resource protection. Theremodeling material is a mudstone polymer which comprises water, a gel material, an activator and standard sand. The method comprises the following steps: determining the ratio of materials for the remodeling water-repellent layer according to actual conditions; compacting the surface of the dumping site, constructing a mould, uniformly pouring the remodeling material, vibrating and smoothing; curing for a period of time to complete the remolding of the water-repellent layer at the stage, and circulating the process to remodel the whole water-repellent layer. The remodeling material for the water-repellent layer of the dumping site in the open pit mine disclosed by the invention is simple in construction and low in cost, can be used for remodeling the water-repellent layer of the dumpingsite in the open-pit mine and realizing ecological reclamation, and is of great significance for constructing green mining of mines.

Description

technical field [0001] The invention relates to a material and a method for remolding a water-resisting layer of a dump in an open-pit mine, and is especially suitable for the field of water resource protection in coal mining. [0002] technical background [0003] Although coal open-pit mining has many advantages, it still cannot avoid the damage to the ecological environment, and with the large-scale development of open-pit mining, this problem has become increasingly serious. In the initial stage of open-pit mine construction, it is necessary to drain and drain the mining area, so that the groundwater will be lost in the form of surface runoff; during the mining process, a huge mine pit and a giant "funnel" will be formed, resulting in the infiltration of surface water and shallow groundwater. Resource loss is extremely serious. The loss of water resources in open-pit mining areas has led to serious degradation of surrounding vegetation, and agricultural production has be...

AI Technical Summary

Problems solved by technology

[0004] The fundamental reasons for the loss of water resources in open-pit mines and the difficulty of recovery are: first, the water-resistant layer above the coal seam was blasted and stripped during the mining process, and the shallow groundwater could not be restored; second, the permeability coefficient of the loose earth-rock mixture in the internal dump site Larger and unable to hold enough moisture

The damage to the water-resisting layer by open-pit mining is permanent. Although most open-pit mines have achieved internal drainage of stripped materials, the permeability coefficient of loose soil-rock mixture materials is relatively large, which cannot meet the requirements of water-resistance or even water-blocking

Secondly, the remodeling of the aquifer in the open-pit mine requires a large amount of materials, and factors such as economic costs must be considered

Therefore, there are no scholars at home and abroad on the remodeling of the aquifer in the open-pit mine dump

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