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Device and method for measuring density of water and rock debris mixture at different water levels in blasthole

A technology for mixtures and cuttings, applied in measuring devices, specific gravity measurement, instruments, etc., can solve problems such as the influence of blasting parameters, and achieve the effects of controlling hazards, strong operability, and saving investment costs

Inactive Publication Date: 2019-08-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned method, and propose a method of measuring the density of the mixture of water and cuttings at different water levels in the blasthole by using the buoyancy method so that the explosive can sink, and solve the problem of the mixture of water and cuttings in the blasthole. Influence of Density on Blasting Parameters

Method used

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  • Device and method for measuring density of water and rock debris mixture at different water levels in blasthole
  • Device and method for measuring density of water and rock debris mixture at different water levels in blasthole
  • Device and method for measuring density of water and rock debris mixture at different water levels in blasthole

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Embodiment 1

[0022] Embodiment 1: as Figure 1-3 As shown, a device for measuring the density of the mixture of water and rock debris at different water levels in the blasthole, including a tripod 2, a nylon rope 3, a hollow iron block 4 and a spring dynamometer 1,

[0023] The upper end of the spring dynamometer is fixed on the tripod 2 by a rope, the lower end of the spring dynamometer 1 is connected with the nylon rope 3, and the lower end of the nylon rope 3 is connected with it by the hook 5 on the hollow iron block 4; The meter 1 is fixed on the tripod 2 to ensure that the reading of the spring dynamometer 1 can be stable and the measured data are more accurate. In addition, the nylon rope 3 is light and hard, has low water absorption and good dimensional stability; its weight and other factors have little influence on the results, which can be almost ignored.

[0024] Described hollow iron block 4 comprises a sealed cylindrical shell, and its inside is provided with a hollow cylind...

Embodiment 2

[0025] Embodiment 2: adopt the device as described in embodiment 1 in the present embodiment to measure the density of water and cuttings mixture under different water levels in the blast hole,

[0026] To make the hollow iron block 4 sinkable in the mixture of water and cuttings, it is necessary to ensure that G>F f Namely: v 实 / v>ρ / ρ 铁 , where v 实 Be the volume of the cylindrical shell that is the solid part of the hollow iron block 4, and ρ is the density of the mixture of water and cuttings. In the present embodiment, the radius of the bottom surface of the cylindrical shell in the hollow iron block 4 is R=15mm, and the hollow iron block 4 The height H=45mm of cylinder shell, the bottom surface radius r=14.23mm of the hollow cylinder in the hollow iron block 4, the height h=30mm of the hollow cylinder in the hollow iron block 4, utilize formula G=(πR 2 H-πr 2 h) ρ 铁 g, ρ 铁 =7.9×10 3 kg / m 3 , obtain the gravity G=0.98N of the hollow iron block 4;

[0027] Record th...

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Abstract

The invention discloses a device and method for measuring the density of a water and rock debris mixture at different water levels in a blasthole and belongs to the field of blasting engineering. Thedevice disclosed by the invention comprises a tripod, a nylon rope, a hollow iron block and a spring dynamometer, wherein the upper end of the spring dynamometer is fixed on the tripod by a rope; thelower end of the spring dynamometer is connected with the nylon rope; the lower end of the nylon rope is connected with the hollow iron block through a hook on the hollow iron block; the hollow iron block comprises a sealed cylindrical shell; a hollow cylinder is arranged inside the hollow iron block; and the hollow iron block can sink into the blasthole. The method for measuring the density, which is disclosed by the invention, has the advantages that the method is specifically used for measuring the density of the water and rock debris mixture at different water levels in the blasthole; themethod is simple in steps and high in operability and capable of saving investment cost; and the density of the water and rock debris mixture at different water levels in the blasthole can be measuredthrough the method and the method is especially suitable for deep hole blasting.

Description

technical field [0001] The invention relates to a method and a device for measuring the density of a mixture of water and rock cuttings at different water levels in a blasthole, belonging to the field of blasting engineering. Background technique [0002] In my country's underground blasting, coal mine blasting and open-pit blasting projects, the drilling and blasting method is still the main method of rock breaking. It can be seen that blast holes are widely used in blasting engineering. In consideration of the influence of the density of the mixture of water and rock debris at different water levels in the blast hole on the blasting parameters such as the charge amount, charge structure, explosive roll length and diameter of the blast hole at different water levels, it is necessary to find a method to measure the blasting parameters in the blast hole. Feasible method and device for density of mixture of water and cuttings. If such problems can be solved, the purpose of i...

Claims

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Application Information

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IPC IPC(8): G01N9/02
CPCG01N9/02
Inventor 黄永辉王太福王长卓林巳晶吴云龙张智宇
Owner KUNMING UNIV OF SCI & TECH
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