Box type elbow filling device for filling underground mine goaf

Abstract

The invention provides a box type elbow filling device for filling an underground mine goaf. The device comprises a booster pump and a plurality of filling flat pipes, wherein the plurality of fillingflat pipes are all arranged in the horizontal direction and the arrangement heights of the filling flat pipes are gradually reduced, the first filling flat pipe is connected with the output end of the booster pump, the last filling flat pipe extends into the underground mine goaf, any two adjacent filling flat pipes are connected through filling vertical pipes arranged in the vertical direction,the sum of the lengths of all the filling flat pipes and the lengths of all the filling vertical pipes is L, the relative height difference between the first filling flat pipe and the last filling flat pipe is H, a working pressure head of the booster pump is h, and L, H and h meet the following relationship of L * H + h < 9. By adopting the technical scheme of the device, the filling pipeline path is reasonably arranged, and by fully utilizing the gravity flow of slurry, the slurry fills the inlet mine goaf, so that long-distance conveying of the slurry is achieved, the technical requirementfor the used booster pump is reduced, and the filling efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, in particular to a box-type elbow filling device for filling goafs in underground mines. Background technique [0002] In mining engineering, the filling operation of the goaf is very important. It is an important measure to ensure the safety of mine construction. In the prior art, the booster pump is usually used to fill the goaf through the filling pipeline. However, in the filling operation During the process, if the filling pipeline is too long, for example, when the length of the filling pipeline is greater than 9km, the conveying force output by the booster pump is not enough to transport such a long distance, and the slurry cannot be effectively transported to the goaf, which affects the slurry filling In order to solve this problem, in the prior art, only by increasing the working pressure head of the booster pump, it can transport the slurry for a longer distance. However, wit...

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Problems solved by technology

[0002] In mining engineering, the filling operation of the goaf is very important. It is an important measure to ensure the safety of mine construction. In the prior art, the booster pump is usually used to fill the goaf through the filling pipeline. However, in the filling operation During the process, if the filling pipeline is too long, for example, when the length of the filling pipeline is greater than 9km, the conveying force output by the booster pump is not enough to transport such a long distance, and the slurry cannot be effectively transported to the goaf, which affects the slurry filling In order to solve this problem, in the prior art, only by increasing the working pressure head of the booster pump, it can transport the slurry for a longer distance. However, with the increase of the working pressure head of the booster pump, the increase The external volume of the pressure pump also increases accordingly, and its price is expensive, which increases the input cost of the filling device accordingly

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