Coal mine gob filling system and method

Abstract

The invention relates to a coal mine gob filling system and method. The coal mine gob filling system has the advantages that the structure is simple, the strength of airbag groups is high, the system adapts to large-volume gob filling, operators do not conduct operation in the gob, the safety and reliability are high, the isolation performance is good, the automation level is high, the construction speed is quick, the filling speed is quick and the mining speed is not influenced. The coal mine gob filling method has the advantages that the method adapts to large-volume gob filling and is widely applicable to coal mine gob control and treatment, the operators do not conduct operation in the gob, the operation is simple and convenient to conduct, the steps are simple, the production requirements of safety and high efficiency can be satisfied, the safety and reliability are high, the isolation performance is good, the automation level is high, the construction speed is quick, the filling speed is quick, the mining speed is not influenced, not only can the amount of used cement mortar be reduced, but also waste coal gangue can be digested, the waste is utilized and is prevented from polluting the environment, the economic performance and environmental friendliness are good and the filling cost is low.

Description

technical field [0001] The invention belongs to the technical field of coal mine goaf control, in particular to a coal mine goaf filling system and filling method. Background technique [0002] Coal mine goaf is the empty area left below the surface after coal mining. If it is not filled and treated, it will cause hazards such as ground subsidence. Damage, ground fissure deformation of roads, or major projects such as highways, railways, airports, and urban buildings increase construction difficulty and input costs due to the collapse of goafs. In addition, the cracks formed by the surface subsidence will provide sufficient oxygen for the underground natural coal seam, and then the underground coal fire will weaken the pressure on the roof of the goaf, intensify the caving, widen and lengthen the ground fissures, and finally form the "ground crack-fire area-surface rift" vicious circle. Therefore, these coal mine goafs have brought serious threats to coal mine workers and ...

AI Technical Summary

Problems solved by technology

Artificial roofing is the artificial use of underground blasting and other technologies to lower the top floor. This method will still cause the ground to collapse, which will cause huge damage to the ground buildings, and form waterlogged areas on farmland and cultivated land, making it impossible to cultivate.

[0004] In addition, for a long time, a large amount of coal gangue produced by domestic coal mines has piled up like mountains on the ground, which not only occupies farmland, causes waste of cultivated land, but also volatilizes harmful gases and pollutes the environment

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