Mobile type hydraulic airtight filling device

Abstract

The invention relates to a mobile type hydraulic airtight filling device which comprises a plurality of groups of hydraulic supports arranged in parallel, the rear ends of each group of hydraulic supports are connected with vertical retaining walls made of hard plates via cross beams, and an upper and a lower opposite hydraulic cylinders are fixedly installed on the hydraulic supports respectively via supporting plates; adjusting plates are fixed at the top ends of piston rods of the hydraulic cylinders, the adjusting plates comprise one horizontal pressing plate perpendicular to the piston rods and two vertical plates welded on both ends of the horizontal pressing plate and parallel to the piston rods, and the horizontal pressing plate is fixed at the top ends of the piston rods; the vertical plates are located at the inner side of the vertical retaining walls, an integral waterproof cloth curtain is arranged at the outer side of a plurality of vertical retaining walls, and the upper and lower ends of the cloth curtain respectively wind around the upper and lower horizontal pressing plates and are connected with the supporting plates via the adjusting plates, a macromolecular elastic sealing block is arranged above the cloth curtain above the horizontal pressing plates, and the sealing block is connected with the cloth curtain via a positioning device. When the device is used for filling, the sealing effect is good, and top plate collapse and surface subsidence can be well inhibited by filling while mining.

Description

technical field [0001] The invention relates to a mobile hydraulic airtight filling device, which belongs to the field of coal mining filling and is suitable for filling high-water materials. Background technique [0002] At present, coal mining methods in the field of coal mining can be divided into three types according to the way of goaf processing: caving method, coal pillar method and filling method. Among them, the filling coal mining method refers to a coal mining method in which relatively cheap filling materials are used to fill the goaf densely during or after the mining of the working face. Its purpose is mainly to use the filling body to control the surrounding rock, so as to reduce ecological and geological disasters such as surface subsidence and floor water inrush. At the same time, create safer operating conditions for the mining face. In the process of filling and mining with high-water materials, due to the strong fluidity of high-water materials, it is n...

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Problems solved by technology

The main problems of these three methods are low resource recovery rate, low production efficiency and low filling efficiency.

But so far, there is no good way to replace the above method

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