Goaf treatment method based on filling raises with surface barren rock

Abstract

A goaf treatment method based on filling raises with surface barren rock includes; during the post-mining thin bedrock and shallow-buried goaf treatment in a mine, utilizing a full face digging method to dig downwards at least three raises to be straight communicated with the goaf through a digging machine, and then filling the goaf with the surface barren rock in a freely-dropping mode. According to the goaf treatment method based on filling the raises with the surface barren rock, the goaf can be filled up with the barren rock as much as possible and the roof exposure of the goaf can be reduced or even eliminated, so that the stability of the goaf can be enhanced and the collapse possibility of the goaf can be reduced; and meanwhile, due to the fact that the goaf is filled up with the barren rock, the intensity of the disaster caused by the collapse of the goaf roof can be reduced significantly and the mining safety of the mine can be effectively enhanced, so that the goaf treatment can be achieved. The goaf treatment method based on filling the raises with the surface barren rock is high in practicality, easy to achieve and capable of saving the cost effectively.

Description

technical field [0001] The invention relates to a method for treating a goaf based on filling a raised well and taking surface waste rocks, and is especially suitable for filling treatment where there is a thin bedrock, a shallow buried goaf after mining, and there is a possibility of disaster caused by collapse. Background technique [0002] At present, when the goaf is filled and treated after mining, the main method is to establish a filling system, that is, to arrange pipelines in the shaft, and to transport the cement mortar made on the surface to the appropriate position in the goaf through the pipeline in stages. The mortar is dehydrated and then cemented to fill the goaf. This method requires long-term maintenance, which requires a huge shaft engineering, complex filling process, large investment of mechanical equipment, and high cost. The filling system is prone to failure during operation and requires a lot of manpower. Material and financial resources have improve...

AI Technical Summary

Problems solved by technology

[0002] At present, when the goaf is filled and treated after mining, the main method is to establish a filling system, that is, to arrange pipelines in the shaft, and to transport the cement mortar made on the surface to the appropriate position in the goaf through the pipeline in stages. The mortar is dehydrated and then cemented to fill the goaf. This method requires long-term maintenance, which requires a huge shaft engineering, complex filling process, large investment of mechanical equipment, and high cost. The filling system is prone to failure during operation and requires a lot of manpower. Material and financial resources have increased the cost of mining

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