Underground mine laneway engineering or ore breaking engineering dust fall water pressure blasting process

A hydraulic blasting and engineering technology, which is applied in blasting, mining equipment, tunnels, etc., can solve the problem of less application in blasting, and achieve the effects of reducing the amount of explosives, reducing ventilation costs, and reducing dust concentration

Pending Publication Date: 2022-04-26
中矿金业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Concentrated water pressure smooth blasting technology was developed by Professor He Guangyi, a well-known blasting expert in my country. It is mainly used in the control blasting of tunnels and ground buildings. At present, it is rarely used in the blasting of underground mine shaft engineering and mine falling engineering.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0022] Specific embodiment 1: design scheme of excavation engineering hydraulic blasting test

[0023] a. The original status of the project:

[0024] The cross-section of the excavation roadway is 2.8×2.6 meters, the diameter of the blast hole is 42mm, and the depth of the blast hole is 2.8 meters. The barrel-shaped cutting method is adopted, and the number of cutting holes is 7, including 6 throwing holes (hollow holes), 1 drug-filling hole, 11 peripheral holes, 15 auxiliary holes, and a total of 33 holes. Choose 2# rock emulsion explosives, the diameter of the cartridge is 3cm, the length of the cartridge is 33cm, and the mass of a single cartridge is 0.3kg. Each blasthole is charged continuously, No. 28 and No. 29 blastholes are blocked, and the rest of the blastholes are not blocked. The detonation uses the detonator to detonate the nonel to detonate, and uses the differential detonator to control the detonation sequence. The detonation sequence is: cut hole, auxiliary ...

specific Embodiment 2

[0028] Concrete embodiment 2: drop ore project hydraulic blasting test design scheme:

[0029] 1. The original status of the project:

[0030] The roof of the gold mine stope is controlled by an arch, the depth of the blasthole is 2.8m, and the blasthole is generally "quincunx-shaped". The distance between the top plate control blastholes is 0.5-0.6m, the distance between the second row of blastholes is 0.4-1.7m, the distance between the third row of blastholes is 1.8-1.9m, the distance between the roof control blastholes and the second row of blastholes is 0.5-0.6m, and the distance between the second row of blastholes is 0.5-0.6m. The distance between the second row of blastholes and the third row of blastholes is 0.6-0.7m, and the minimum resistance line is 0.8m. The charge volume of the blast hole controlled by the top plate is 2 rolls, and the charge at intervals is adopted. Two nonel tubes are detonated.

[0031] 2. Design plan:

[0032] The blasthole distribution, bl...

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Abstract

The invention relates to a dust fall water pressure blasting process for underground mine laneway engineering or ore breaking engineering. The dust fall water pressure blasting process comprises the following steps that S1, underholing holes, peripheral holes and auxiliary holes are formed in a working face, and the underholing holes are formed in the lower position of the center of a section; the peripheral holes are arranged on a contour line of a roadway surface, the top holes and the side holes are parallel to each other according to smooth blasting requirements, and all the bottom holes are positioned on the same surface; the auxiliary holes are uniformly formed between the underholing holes and the peripheral holes; and S2, cartridges and water bags are sequentially and firstly arranged in the blast holes, the blast holes are filled with stemming, and the number of the water bags arranged in the blast holes is determined according to the remaining space of the blast holes. The method has the advantages that the concentration of poisonous and harmful gas and dust is effectively reduced, the ventilation cost is reduced, the explosive amount is reduced, and the economic benefit is improved. The device is suitable for construction places with small space, difficult ventilation and difficult explosive supply.

Description

technical field [0001] The invention relates to a dust-reducing hydraulic blasting process for underground mine shaft engineering or ore-falling engineering, which is suitable for construction sites with small space, difficult ventilation and difficult supply of explosives. Background technique [0002] Concentrated water pressure smooth blasting technology was developed by Professor He Guangyi, a well-known blasting expert in my country. It is mainly used in the controlled blasting of tunnels and ground buildings. At present, it is rarely used in the blasting of underground mine shaft engineering and mine falling engineering. The present invention is based on the increase of the dust concentration and the amount of explosives brought by the blasting of the existing underground mine shaft engineering and ore falling engineering, and applies the hydraulic blasting technology to the underground mine shaft engineering and ore falling engineering to reduce the consumption of expl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D1/10F42D3/04F42D1/18E21D9/00
CPCF42D1/00F42D1/10F42D3/04F42D1/18E21D9/006
Inventor 远义飞梁超盛新利徐涛王言泰
Owner 中矿金业股份有限公司
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