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Irregular-shape bulk rock volume estimating method

An irregular and bulky technology, applied in the mining field, which can solve the problems of low efficiency, complicated procedures, and inconvenient operation.

Inactive Publication Date: 2008-04-09
宝钢集团上海梅山有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can accurately measure irregular ores (or rocks), it is very inconvenient to operate.
It is impractical to use this method: the process is complicated and the efficiency is extremely low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] When measuring a small ore, use calipers (or other measuring instruments) to measure the three-dimensional size of each ore. When measuring, use the dimension of the largest direction of the small ore as the length, and use this to measure the other two-dimensional size of its circumscribed cuboid. Generally take Take the width and height of the largest area. Calculate its circumscribed cuboid volume (the present invention claims measure volume) V according to three-dimensional size d . Computes the scale of a three-dimensional dimension. And according to this, it is classified into various subdivided cuboids, and they are divided into flat type, approximate cube type, and pure cuboid type (used when the required precision is higher) to obtain different K value ranges.

[0018] According to Archimedes' law, these small pieces of ore are submerged in the liquid, and the volume of the discharged liquid is measured, which is the actual volume V of the small piece. s . ...

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PUM

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Abstract

A given amount of ore material in small blocks is picked out at random in flow of production. 3D sizes of each block of ore material are measured by length-measuring appliance. Size in maximal direction is defined as a. the other 2D sizes perpendicular to the maximal direction are determined by method of externally tangent cuboid so as to obtain sizes b, c. thus, volume of cuboid is calculated from Vd=abc. Actual volume Va of block of ore material is determined through method of displaced volume. Thus, reduction coefficient K=Va / Vd. Through 3D sizes measured, the invention can estimate actual volumes from coefficient K. Features are: no need of complex procedure and critical condition, quick estimation, satisfying need of production practice.

Description

1. Technical field [0001] The invention belongs to the technical field of mining, and relates to a method for estimating the volume of large ore (or rock) with irregular shapes, which is suitable for estimating the volume of various types of ore rocks with low water absorption. 2. Background technology [0002] When selecting rock drilling and blasting parameters in mines, it is often necessary to measure the large block rate index, and optimize the rock drilling and blasting parameters by analyzing and judging the large block rate, and finally determine the reasonable rock drilling and blasting parameters used in the mine production process. [0003] Generally, it is difficult to calculate accurately when measuring large ore (or rock) with irregular shape. It is better to put the ore into the liquid and measure its volume. According to Archimedes' law, the volume of discharged liquid is the volume of large ore (or rock). Although adopting this method can measure irregular ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00
Inventor 范庆霞
Owner 宝钢集团上海梅山有限公司
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