Continuous miner drilling-type paste filling mining method for end slope coal

Abstract

The invention discloses a continuous miner drilling-type paste filling mining method for end slope coal, and belongs to the field of coal mining methods. The problems of the poor filling rate and topfilling effect, the low resource recovery rate, destruction of the ecological environment of a mining area, poor slope stability and the like when people enter an adit to pave filling pipelines duringexisting mining of end slope coal are solved. The end slope coal of an open-pit coal mine is divided into several sections, a plurality of mining adits are planned in the sections, and inter-mining-adit coal pillars are reserved among the mining adits; and initial skip-mining is carried out in the sections, at the same time, a plurality of filling holes are formed in the upper earth surfaces of the middles of the mining adits, a steel sleeve sleeving wall is adopted, after a high-concentration filling body is injected into the mining adits for mining, a goaf is formed, the filling operation is completed in two times, and the secondary mining is carried out after the initial mining is completed in the sections until the mining and filling of the mining adits in all sections are completed.The safety during mining and filling can be improved, and personnel are not needed to enter a roadway; and 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 effe...

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