Natural caving method based safe ore drawing control method

Abstract

The invention relates to a natural caving method based safe ore drawing control method. The method comprises a first stage of natural caving method based ore drawing and a second stage of natural caving method based ore drawing. Firstly an ore rock mass space is divided into block sections, and then a tracer agent is injected to pre-number the block sections; in the first stage of ore drawing, the processes of calculating the overall form of an ore drawing interface, correcting a loosening coefficient, calculating the form of a caved roof, calculating the height of a mining pit area and monitoring the drawing amount and position of hanging wall surrounding rock are carried out in sequence; and in the second stage of ore drawing, the processes of speculating the form of an ore-rock interface and tracking the proportion of the drawing time of the hanging wall surrounding rock and the drawing amount of the surrounding rock are carried out in sequence, the process of speculating the form of the ore-rock interface is the process of controlling the form of the ore-rock drawing interface to move according to the designed form, the drawing condition of the hanging wall surrounding rock and the cut-off ore drawing grade of each ore drawing opening are mastered in time, and the ore drawing stopping time point of each ore drawing opening is judged. The method has the advantages that statistical data can be mutually checked, the statistical data accuracy is high, the ore drawing control precision is good, the loss and dilution are effectively controlled, and the ore drawing operation safety is high.

Description

technical field [0001] The invention relates to the field of ore drawing management in mines, in particular to a safe ore drawing management and control method by natural caving method, which is suitable for the application of ore drawing management in mines. Background technique [0002] The ore-drawing management and control of the natural caving method is very important, especially in the process of large-scale ore-drawing, the ore-drawing management work is directly related to the success or failure of this mining method. The mines mined by the natural caving method have great influence on the production plan and discharge. Mine control requirements are very strict, the main purpose of which is to ensure normal and continuous caving conditions, control the degree of caving, avoid destructive effects on the production roadway, the hazard of air shock waves, and the excessive mixing of adjacent caving surrounding rocks. Great impoverishment, loss. The ore drawing of the n...

AI Technical Summary

Problems solved by technology

Because the ore single-bucket loading system is greatly affected by the driver's operating level and the size of the caving ore lumps, this scheme is used for statistical inversion in the early stage of ore drawing, and the accuracy is high. The ore volume deviation calculated by this traditional statistical method will be very large, which will affect the formulation of the next step operation plan, and even cause a large amount of loss and dilution, as well as extremely destructive impact air waves, which will seriously affect the overall performance of the natural caving method. Economic benefits and even the success or failure of mining method applications

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