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System evaluation method for block distribution after ore blasting

A system evaluation and degree distribution technology, applied in the direction of material analysis, image analysis, and material analysis through optical means, can solve the problems of extensive promotion restrictions, labor and time-consuming measurement, empirical formula errors, etc., and achieve extensive promotion value, good Economic benefits, the effect of accurate evaluation

Active Publication Date: 2015-03-11
ANSTEEL GRP MINING CO LTD
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AI Technical Summary

Problems solved by technology

The direct measurement method in the traditional sense is to directly sample and analyze the blasting products to obtain the information on the particle size distribution of the blast pile. Due to the large number of rocks on the surface of the blast pile, this analysis method is labor-intensive and time-consuming, and the cost is high. , the wide application is greatly limited; and in recent years, the mathematical modeling method of mine blasting, according to the unit consumption of mine explosives, ore lithology, row spacing, aperture, hole spacing, blast hole density coefficient, resistance line, explosive wave impedance , differential time and other parameters to establish a mathematical model, and use empirical formulas to analyze the fragmentation of ore blasting. This method lacks evaluation criteria for blasting fragmentation in different mines, and its empirical formula also has certain errors, and its wide application is also greatly limited.

Method used

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  • System evaluation method for block distribution after ore blasting
  • System evaluation method for block distribution after ore blasting
  • System evaluation method for block distribution after ore blasting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 and figure 2 As shown, a photo with a good overall distribution of ore blasting fragmentation is selected, and the 8×8 square grid with the area of ​​each small square of b×b size is used to calculate its value, 32 of the 64 squares in the picture are counted as 1, and 32 are counted as -1, and the total count is 32+(-32)=0, indicating that the blasting fragmentation of the ore is the best blasting fragmentation diameter b that the crusher can accept.

Embodiment 2

[0043] Such as image 3 and Figure 4 As shown in Fig. 1, a selected photo showing a small overall distribution of ore blasting fragmentation size is calculated by using 8×8 square grids with the area of ​​each small square being b×b. value, 23 of the 64 squares in the picture are counted as 1, and 41 are counted as -1, and the total count is 23+(-41)=-18, indicating that the ore blast fragmentation is the minimum ore blast fragment diameter a that the crusher can accept.

Embodiment 3

[0045] Such as Figure 5 and Figure 6 As shown, a selected photo of ore blasting with a smaller overall distribution of block size is calculated by using 8×8 square grids with the area of ​​each small square being b×b. value, 10 of the 64 squares in the picture are counted as 1, 54 are counted as -1, and the total count is 10+(-54)=-44, indicating that the ore blasting block size is smaller than the minimum ore blasting block size diameter a that the crusher can accept. The general announcement is not suitable for entering the crusher.

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Abstract

The invention relates to a system evaluation method for block distribution after ore blasting. The system evaluation method is characterized in that various ore blasting muck piles with uneven sizes formed after mining blasting are selected for shooting; a graduated scale is placed on the surface of the ore blasting muck piles to be shot; the ore blasting muck piles are shot using a method for shooting standard photos in a positive and vertical manner; the total shot area is larger than or equal to 10% of the surface area of the ore blasting muck piles; the photos are processed using the PHOTOSHOP software, a square grid is set on the selected pictures, and the selected pictures are acted by taking the square grid as a standard and are analyzed and evaluated one by one. The system evaluation method for block distribution after ore blasting has the advantages that the block distribution after ore blasting can be easily and quickly analyzed; the blasting quality can be directly and accurately evaluated; the blasting design can be optimized and adjusted according to the analysis result; the system evaluation method has a wide promotion value and can create favorable economic benefits in application.

Description

[0001] technical field [0002] The invention belongs to the technical field of ore blasting lumpiness distribution evaluation, in particular to a system evaluation method for ore blasting lumpiness distribution. Background technique [0003] Factors affecting the distribution of ore blasting fragmentation include: explosive parameters, blasting parameters, rock mass structure and its mechanical characteristics and other factors. The block size and composition of ore after blasting are not only the main information reflecting blasting design and operation level, but also affect subsequent production processes such as shovel loading, crushing, transportation, root removal, mineral processing, etc., thus affecting mine production costs and efficiency. If the blasting ore lumpiness is large, secondary blasting is required, and if the blasting ore lumpiness is small, the blasting cost will increase. Therefore, it is necessary to find an effective and practicable method for de...

Claims

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Application Information

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IPC IPC(8): G01N21/84G06F19/00G06T7/00
Inventor 孙厚广潘鹏飞韩忠和范晓明王乐
Owner ANSTEEL GRP MINING CO LTD
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