Mining area steering method for full-mechanized production super-huge open pit coal mine

Abstract

The invention discloses a mining area steering method for a full-mechanized production super-huge open pit coal mine. The method comprises the following steps of dividing the super-huge open pit coal mine into a plurality of mining areas; determining the reasonable width of a second mining area; when a working face advances to the deep boundary of the second mining area, starting steering; planning the soil discharge during the sector steering period, and calculating the stripping object discharge distance condition during the sector steering period to ensure that the steering mode is an optimal mode. According to the method, based on the comparison of three transition modes during steering, the most suitable mining area steering method in the fully-mechanized production super-huge open pit coal mine is selected, the stage that a working line is gradually lengthened in the steering process of pure sector steering is overcome in a finally selected L-shaped sector, moreover, the stripping ratio is reduced, the north-south steering angle of the working line is balanced, and meanwhile, the method has the advantages that the inner row follow-up effect is good, the steering discharge capacity is small, the steering distance is short and the like.

Description

technical field [0001] The invention belongs to the technical field of open-pit mining, and in particular relates to a method for turning a mining area of ​​a fully mechanized extra-large open-pit coal mine. Background technique [0002] When the mine production develops to a certain extent, in order to ensure the output of the mine, the adjacent mining area needs to be penetrated, and the transition of the mining area will be involved in the process of penetration. The cost has a great impact, and sometimes there will be problems such as tight coal connection, increased transportation distance and height difference, tight internal drainage space, and difficult reclamation conditions. The way of turning the mining area directly affects the amount of discharge during the transition period of the open-pit mine, the distance of stripped objects, the continuation of production, the stripping ratio of production, etc., which seriously affects the overall economic benefits of the ...

AI Technical Summary

Problems solved by technology

If the progress plan of the stripping project in the transitional period is not properly arranged, it will lead to a reduction in production or even a shutdown of the open-pit mine due to failure to continue coal mining

During the transition period, t

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