A continuous mining machine drilling type paste filling mining method for side-side coal

Abstract

A continuous miner drilling type paste filling mining method for side-side coal, belonging to the field of coal mining methods, can solve the problems of existing side-side coal mining, personnel entering the tunnel to lay filling pipelines, filling rate and roof connection effect Poor environmental protection, low resource recovery rate, damage to the ecological environment of the mining area, poor slope stability, etc., the open-pit coal mine is divided into several sections, and several mining tunnels are planned in the section, and the mining tunnels are reserved between the mining tunnels. In the section, the initial mining jumping is carried out. At the same time, a number of filling holes are arranged on the surface above the middle of the mining tunnel, and steel casing walls are used to inject high-concentration filling bodies into the mining tunnel. After mining, a mining tunnel is formed. In the empty area, the filling operation is completed in two stages. After the primary mining is completed in the section, the secondary mining is carried out until the mining and filling of all section mining tunnels are completed. The method can improve the safety during mining and filling, and does not require personnel to enter the roadway for operation; the filling process is simplified and the filling cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of coal mining methods, and in particular relates to a continuous coal mining machine drilling type paste filling mining method for edge coal. Background technique [0002] According to relevant statistics, there were 439 open-pit coal mines nationwide in 2017, with a production capacity of 922 million tons, accounting for 17.37% of the total coal production capacity, indicating that open-pit mining has become an important part of my country's coal mining industry. During the mining process of open-pit coal mines, a large number of end-side coal pillars, coal dumps, inter-mine coal pillars, and residual coal resources in small coal kilns will be left behind. The annual end-side coal pressure exceeds 100 million tons, most of which have not been rationally utilized The land is more than 5 million mu. Such a large amount of compressed coal cannot be extracted. On the one hand, the recovery rate of coal resour...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at problems such as existing end-side coal mining, personnel entering the tunnel and laying filling pipelines, poor filling rate and roof connection effect, low resource recovery rate, damage to the ecological environment in mining areas, and poor slope stability, etc. Drilling type paste filling mining method of continuous coal mining machine

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