Filling device for controlling surface subsidence of coal mine

Abstract

The invention discloses a filling device for controlling surface subsidence of a coal mine, which can effectively ensure the filling effect and prevent subsidence, and can effectively realize filling of slurry at gaps by setting slurry with different viscosities or concentrations, and the slurry with high viscosity or concentration is supplemented and pressurized by using a rotary driving mechanism, so that the filling efficiency is improved. The slurry filling device can effectively pressurize slurry with small viscosity, improve the pressurizing capacity and the filling effect, and achieve effective filling of gaps.

Description

technical field [0001] The invention specifically relates to a filling device for controlling ground subsidence in a coal mine, and relates to the related field of filling equipment. Background technique [0002] At present, in the process of coal mining, with the mining of coal mines, goafs will occur underground, and if the surface above these goafs is not deep enough or supported by rock formations, etc., it will be prone to subsidence problems. Once subsidence occurs , it not only leads to the scrapping of coal mines, but also poses a greater threat to the safety of personal and property above and below ground. In this regard, it is necessary to fill these areas prone to subsidence in order to ensure the support of the surface above the goaf and prevent the problem of subsidence. The current filling is generally carried out by means of ordinary high-pressure grouting. This filling efficiency is not high, and it is difficult to achieve a full range of gap filling treatme...

AI Technical Summary

Problems solved by technology

The current filling is generally carried out by means of ordinary high-pressure grouting, which is not efficient, and it is difficult to achieve all-round gap filling, which affects the reliability and thoroughness of filling.

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