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a blasting method

A consistent, blast-hole technology, applied in the blasting field, can solve the problems of unbalanced shear strength and resistance between hole walls, and achieve the effect of reducing blasting noise and increasing safety.

Active Publication Date: 2021-06-29
远军热能动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a blasting method using a shear thickening liquid as a blasthole plug to overcome the problems of unbalanced shear strength and resistance between the hole walls of the existing blasthole plug, while achieving Technical effects of dust reduction and vibration reduction

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0068] Water starch is used as the shear thickening liquid, and the volume ratio of starch and water is 1.5:1; the blasting concentrator uses ordinary TNT explosives; dig blasting holes at the position where the blasting is to be carried out; add the starch into the water and stir evenly After about 5-15 minutes, the water starch is prepared, and the water starch is poured into the blast hole; the ordinary TNT explosive bag is placed in the blast hole, and the ordinary TNT explosive bag is pushed into the water starch; The water starch completely seals the blast hole so that the blast concentrator is completely buried in the blast hole; fill the outer side of the water starch near the blast hole outlet side with 10 cm blasthole mud; A cardboard is arranged between the mud and the water starch; the ordinary TNT explosive pack is detonated.

Embodiment 2

[0070] Water starch is used as the shear thickening liquid, and the volume ratio of starch and water is 2:1; the blasting concentrator is made of ordinary TNT explosives; the blasting hole is excavated at the position to be blasted; the starch is added to the water and stirred evenly , after about 5-15 minutes, prepare the water starch, pour the water starch into the blasting hole, place the ordinary TNT explosive package in the blasting hole, push the ordinary TNT explosive into the water starch, the Said water starch completely seals said blasting hole, so that said blasting concentrator is completely buried in said blasting hole; fill 5cm of blasting mud outside the water starch near the blasting hole outlet side; said blasting A cardboard is arranged between the mud and the water starch; the ordinary TNT explosive pack is detonated.

Embodiment 3

[0072] The shear thickening liquid is water starch, wherein the volume ratio of starch and water is 2.5:1; the blasting concentrator is made of ordinary TNT explosives; the blasting hole is excavated at the position to be blasted; the starch is added to the water and stirred evenly , after about 5-15 minutes, prepare the water starch, pour the water starch into the blast hole, place the ordinary TNT explosive bag in the blast hole, push the ordinary TNT explosive bag into the water starch; Said water starch completely seals said blasting hole, so that said blasting concentrator is completely buried in said blasting hole; fill 5cm of blasting mud outside the water starch near the blasting hole outlet side; said blasting A cardboard is arranged between the mud and the water starch; the ordinary TNT explosive pack is detonated.

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Abstract

The invention discloses a blasting method, comprising the steps of: filling a blast hole with a shear thickening liquid, and the shear thickening liquid completely or partially covers a blast concentrator in the blast hole; The shear thickening liquid completely seals the blast hole, so that the blast concentrator is completely buried in the blast hole; the blast concentrator is detonated, and the shear thickening liquid It is a kind of non-Newtonian fluid. The blasting method of the present invention uses the shear thickening liquid as the plugging material for blocking the blasthole, and the blasting blasthole has a good plugging effect, and flying stones are hardly splashed during the blasting process, the blasting degree is deep, the blasting efficiency is high, and the blasting effect is not good. Limited by the layout of the blasting holes, the degree of freedom in the layout of the blasting holes is greater; the blasting process is more moderate, no strong air shock waves will be generated, and no harm will be caused to the surrounding environment and staff. The blasting noise is small and the blasting process is safe .

Description

technical field [0001] The invention relates to a blasting technology, in particular to a blasting method using shear thickening liquid. Background technique [0002] Blasting construction, including mining, metallurgy, geotechnical engineering, road, traffic and other blasting projects; dust, earth and rock splashes, noise and shock waves will be generated during the blasting construction process. The shock wave generated by blasting is an external effect produced during the explosion. Within a certain range, the blast shock wave will cause lethality to the construction workers and cause damage to the surrounding buildings. Although the noise produced by blasting is short, it is easy to cause panic to people because of its loud and sharp sound and high frequency. For continuous different explosion sounds, it will cause adverse effects on people's psychology and physiology. Dust, earth and stone splashes produced by blasting will cause certain damage and pollution to the su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D1/00F42D1/24
CPCF42D1/00F42D1/24
Inventor 郭远军
Owner 远军热能动力科技有限公司
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