Coal-mine underground intelligent jetting backfill mining system

Abstract

The invention discloses a coal-mine underground intelligent jetting backfill mining system, which comprises a filling pump, a distributing pipe, a filling support, a steel tank chain, an intelligent self-propelled trolley, a traction arm, a manipulator a compressed air hose, an electric gate valve, a cyclone, an accelerator pump, an accelerator supply hose and the like. During operation, coal gangue, coal ash, cement and water are mixed according to proportions, so that slurry with high mass concentration is produced, and the filling pump is utilized to pump the slurry into a gob behind the support via a steel braided tube in the steel tank chain; a moving steel tank chain part is connected to the traction arm on the intelligent self-propelled trolley, a fixed distributing pipe outlet plate is connected to a fixed manipulator plate of the manipulator, both the intelligent self-propelled trolley and the steel tank chain run on a bottom bearing plate of the support, the steel tank chain can be carried by the intelligent self-propelled trolley to move to the left and the right, and the end of the distributing pipe can be carried by the manipulator to move up and down and swing within a small amplitude. Full-section jetting backfill in the gob is realized.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to an intelligent jet filling mining equipment under a coal mine. Background technique [0002] Underground coal mines will produce a large amount of gangue during the construction and production process. The traditional method is to pile it directly on the surface. The gangue piled up on the surface forms a gangue hill, which brings great harm to the ecological environment of the mining area and also poses a greater safety hazard. Hidden danger. Gangue underground filling technology has become an important technical research direction for the green and sustainable development of modern mines. [0003] At present, the main methods of filling and mining are: wind filling, paste filling, comprehensive mechanized solid filling coal mining technology, high water material filling and many other methods. This patent discloses an intelligent jet filling mining metho...

AI Technical Summary

Problems solved by technology

[0005]1. The processing capacity per unit time is small (less than 70t / h), which cannot be applied to large mines;

[0006]2. Heavy dust during operation, poor working environment for workers, increased incidence of pneumoconiosis among on-site workers, unfavorable for prevention and control of working flour dust, increased risk of dust explosion, etc. factor

At this stage, the anti-pulp-running measures are often realized by erecting special mechanisms. Since the anti-pulp-running mechanism needs to be erected, the filling operation link is increased and the filling efficiency is reduced.

[0009]2. The paste at the end of the pipeline flows into the goaf at a low flow rate. After being connected to the top and solidified, the next goaf can be filled, reducing the filling and mining efficiency

At present, the maximum output of existing domestic paste filling mining face is less than 1.0Mt / a

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