Method and device for long-distance laying and continuous filling of side coal mining tunnel filling pipelines

Abstract

This application proposes a method for long-distance laying and continuous filling of side coal mining tunnel filling pipelines. The specific method process is as follows: carry out side coal mining to form multiple mining tunnels; The rod extends into the mining tunnel and turns horizontal, and the horizontal end is connected to the conveying pipeline through a fixed tension lock; the conveying pipeline is pulled to the terminal position of the mining tunnel by pulling with a directional drilling rig, and the fixed tension lock is opened; the filling pump is turned on, and the slurry passes through the conveying pipeline It is transported to the terminal position of the mining tunnel until the filling body is connected to the top, and the conveying pipeline is withdrawn for a certain step and continues to fill until the filling of the entire mining tunnel is completed. It realizes the unmanned long-distance laying of the filling pipeline in the mining tunnel; realizes the top connection of the filling body to ensure the filling quality; realizes continuous filling without stopping the machine, improves the filling efficiency, and ensures the safety of side coal mining operations.

Description

technical field [0001] The present application relates to the technical field of side coal backfill mining, in particular to a method and device for long-distance laying and continuous filling of side coal mining tunnel filling pipelines. Background technique [0002] Side-side coal mining in open-pit mines is a mining method that can efficiently recover open-pit side-side coal resources. Through the external operation platform, the continuous miner is remotely controlled to cut parallel mining holes in the coal body, and the coal passes through the rear conveyor belt. export. The mining tunnel formed by side coal mining can reach a depth of 200-500m. [0003] The formation of the mining tunnel will weaken the bearing capacity of the bottom of the open-pit mine side, which may cause the overall instability of the side and endanger the safety of side coal mining equipment and operators. The United States, Australia and other countries have experienced large-scale instabilit...

AI Technical Summary

Problems solved by technology

Mining tunnel filling faces three problems: (1) The filling pipeline is long and heavy, and the ground conditions in the mining tunnel are complicated. The pipeline can only be pushed to a short distance in the mining tunnel, and the filling of the entire length of the mining tunnel cannot be guaranteed; (2) ) The rigid filling pipeline is heavy and cannot float in the filling slurry, and the filling slurry cannot be connected to the top only by the pressure of the filling pump, and the filling quality is not good; dismantling of joints, continuous filling is not possible, the filling efficiency is low, and it is difficult to match the speed of mining tunnel formation

However, the research and development of unmanned filling vehicles is difficult and costly; it is difficult to adapt to the complex road conditions in mining tunnels; the problem of dismantling pipes section by section and filling at intervals is not solved, and the problem of low efficiency

[0005] The application numbers are 202011024294.3 and 202020172601.1, 201922299558.5 and 201910246912.X all adopt the technical scheme of researching and developing special remote control equipment, dragging the filling pipe into the mining tunnel, and then gradually withdrawing. The remote control equipment is expensive and difficult to adapt to the mining tunnel complex road conditions

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