Complete device and method for filling coal-based solid waste paste-like body on large-dip-angle fully mechanized coal mining face

Abstract

The invention discloses a complete device and method for filling a coal-based solid waste paste-like body on a large-dip-angle fully mechanized coal mining face. Ground coal-based solid waste is processed into the paste-like body to be conveyed to a goaf behind the large-dip-angle fully mechanized coal mining face, a paste centralized pressurizing conveying box is arranged in front of an end hydraulic support, a large-dip-angle conveying stand column and a pipe opening wind power deformation device are arranged behind the end hydraulic support, and all the devices are used for providing secondary pressure for the paste-like body so that the paste-like body can fully immerse into the goaf and the angle and time during paste-like body filling can be controlled. The coal-based solid waste paste-like body filling material can effectively solve the problem of ground environment pollution caused by the product, the design of a paste flow valve changes the problem that in a traditional conveying mode, when the goaf of the large-dip-angle fully mechanized coal mining face is filled, the paste runs around, the pipe opening wind power deformation device can effectively solve the problem thatthe filling direction of the paste in the goaf is inaccurate, an upper rotating component of the large-dip-angle conveying stand column can rotate by an angle according to the change of the goaf environment with different dip angles, and the secondary pressure provided by the paste centralized pressurizing conveying box enables the paste-like body to fully immerse into the goaf so that broken rock in the goaf can be solidified more rapidly.

Description

technical field [0001] The invention relates to a complete set of equipment and method for filling coal-based solid waste like paste in a fully mechanized mining face with a large dip angle [0002] technical background [0003] Filling mining is a technology that transports sand, fly ash, paste and other filling materials to the goaf of the coal mine, and mines coal under the protection of the filling body. Filling mining is an important part of the green mining technology system and is an important part of improving The most effective way to recover the recovery rate and reduce environmental damage, not only realizes the mining of villages, buildings, rivers and other "three-down pressure coal", greatly prolongs the service life of the mine, but also improves the resource recovery rate and solves the problem of solid waste. Discharge problem, put an end to the discharge of pollutants, and realize green mining. [0004] The application of traditional ordinary tailings cemen...

AI Technical Summary

Problems solved by technology

With the wide application of these technologies, a series of outstanding problems have also been exposed: low filling body strength, long maintenance period, low filling efficiency, polluting the downhole environment, low utilization rate of tailings, high filling cost

[0005] Paste filling in the goaf behind the fully mechanized mining face with a large inclination angle will cause the following problems: due to the large inclination angle, all the paste will flow down to the side of the machine roadway, the paste and broken rock will not be fully consolidated, and the paste will be in the goaf during filling. Running around, based on the solution to the above problems, a complete set of equipment and method for filling coal-based solid waste like paste in fully mechanized mining faces with large dip angles was invented

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