Movable and liftable coal mine goaf filling device

Abstract

The invention discloses a movable and liftable coal mine goaf filling device. The movable and liftable coal mine goaf filling device comprises a base, a lifting device and a top beam, wherein the bottom end of the lifting device is connected with the base, and the top end of the lifting device is connected with the top beam; the base comprises a skid, a bottom plate and four vertical plates; the skid is arranged at the bottom of the bottom plate, and a pulling hole is formed in the bottom plate; the four vertical plates are connected end to end and are vertically fixed at the upper part of the bottom plate to form a pouring space; the inner part of the pouring space is compacted by utilizing filler; the lifting device is used for enabling the top beam to move up and down to get close to the top of the pouring space or get far away from the top of the pouring space; a filling space is formed by the top of the pouring space, the lifting device and the top beam; and the filling space is filled with an airbag or a coal filling woven bag. The movable and liftable coal mine goaf filling device disclosed by the invention has the advantages that requirements on different goaf heights are met; the movable and liftable coal mine goaf filling device is convenient to use and stable in structure; the use amount of the woven bag is reduced, and the cost is reduced; and the movable and liftable coal mine goaf filling device can be repeatedly utilized and has a good sealing effect.

Description

technical field [0001] The invention relates to the technical field of coal mining, and more particularly relates to a movable lifting type coal mine goaf filling device. Background technique [0002] Coal mine goaf is the underground empty area left after coal mining. It is adjacent to the back of the coal mining face. If it is not filled, it will cause ground subsidence and bring danger; and the goaf is a gas accumulation area. If the ventilation is easy A fire is caused, which seriously threatens the safety production of the coal mining face. Goaf filling is to fill the goaf with filling materials to control the subsidence of the ground surface and prevent the gas from being blown out by ventilation. At present, the gob filling method in coal mines is mostly to manually use woven bags to fill coal, and then stack the woven bags to build a coal wall to achieve the filling and sealing effect. However, this filling method is time-consuming, laborious and costly, and one-tim...

AI Technical Summary

Problems solved by technology

At present, the filling method of coal mine goaf is mostly to manually use woven bags to fill coal, and then stack the woven bags to build a coal wall to achieve the effect of filling and sealing. However, this filling method is time-consuming, laborious and costly, and one-time filling needs to consume thousands of woven bags. , but also to load coal, which requires a lot of labor, the cost of the woven bag is high, and it cannot be disassembled and cannot be reused after filling; in addition, the filling and sealing effect of this method is poor and easy to leak air, the structure is unstable, and the coal wall is easy to tilt and hurt people, causing various security incident

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