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Comprehensive blasting method of explosive pot explosive packages and prolonging explosive packages and capable of reducing blasting chunk rate

A technology of large block rate and charge package, which is applied in blasting and other directions, can solve the problems of increasing the workload of secondary blasting, accelerating the wear of rock loading equipment, and affecting the progress of the project, so as to improve the blasting effect, accelerate the progress of the project, and reduce the cost of the project Effect

Inactive Publication Date: 2012-06-13
LANZHOU UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The large pieces in the blasting not only affect the efficiency of shoveling and accelerate the wear of rock loading equipment, but also increase the workload of secondary blasting, which seriously affects the progress of the project and increases the cost of blasting

Method used

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  • Comprehensive blasting method of explosive pot explosive packages and prolonging explosive packages and capable of reducing blasting chunk rate
  • Comprehensive blasting method of explosive pot explosive packages and prolonging explosive packages and capable of reducing blasting chunk rate
  • Comprehensive blasting method of explosive pot explosive packages and prolonging explosive packages and capable of reducing blasting chunk rate

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Embodiment Construction

[0024] Such as Figure 1~4 Shown, a kind of medicine pot charge bag and extended charge bag comprehensive blasting method that reduces blasting bulk rate, comprises the following steps:

[0025] (1) On the steps 4 of the explosion area, the holes are arranged in a square manner, and multiple rows of expansion pot holes 1 are drilled according to the design requirements of the pot blasting.

[0026] (2) According to the expansion requirements in the blasting design of the medicine pot, the bottom of the expansion pot hole 1 is expanded to form a similar pot-shaped cavity 6 .

[0027] (3) Drill shallow blastholes 2 at the middle position between every two expansion pot blastholes 1 in the same row. Wherein the bottom of the shallow blast hole 2 is 0.3m-0.8m higher than the top of the pot-shaped cavity 6.

[0028] (4) Drill deep blastholes 3 at the center positions of every four adjacent expansion pot blastholes 1 . Wherein the bottom of the deep blast hole 3 is 0.5m-1.0m lowe...

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Abstract

The invention relates to a comprehensive blasting method of explosive pot explosive packages and prolonging explosive packages and capable of reducing blasting chunk rate. The comprehensive blasting method comprises the steps of (1) drilling a plurality of rows of pot enlarging blastholes on blasting area steps in a square hole distribution mode according to design requirements of explosive pot blasting; (2) carrying out pot enlarging at the bottom of the pot enlarging blastholes to form approximately pot-shaped cavities according to the requirement of pot enlarging in the explosive pot blasting design; (3) drilling shallow blastholes at the center position between every two pot enlarging blastholes in the same row; (4) drilling deep blastholes at the center position between every adjacent four pot enlarging blastholes; (5) filling explosives of the explosive pot explosive package into pot-shaped cavities, filling explosives of shallow blasthole prolonging packages into the shallow blastholes, and filling explosives of deep blasthole prolonging packages into the deep blastholes; (6) respectively distributing igniting explosive packages of the pot-shaped cavities, the shallow blastholes and the deep blastholes, and plugging hole openings; and (7) carrying out sequential differential blasting according to initiation sequence required by the design for one time. The comprehensive blasting method solves the problem of blasting chunk rate of explosive pots and effectively improves blasting effects.

Description

technical field [0001] The invention relates to an engineering blasting method, in particular to a comprehensive blasting method of medicine pot charge and extended charge which reduces the rate of blasting large pieces. Background technique [0002] Medicine pot blasting is to reduce the drilling workload, shorten the construction period, improve the blasting efficiency, A blasting method often adopted to reduce blasting costs. [0003] The construction process of the medicine pot blasting method includes hole layout, drilling, hole expansion (pot expansion), charge, and detonation. [0004] With the continuous improvement of medicine pot blasting technology and the increasing development of blasting equipment, medicine pot blasting has been widely used in rock blasting construction of railways, highways, water conservancy, hydropower, and foundation projects. The explosives are mainly placed at the bottom of the blasted rock mass, resulting in the uneven distribution of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/04
Inventor 言志信
Owner LANZHOU UNIVERSITY
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