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Non-coupling pre-splitting explosive charging device and using method

A technology of charging and pre-splitting, applied in blasting and other directions, can solve the problems of labor consumption, time-consuming, complicated charging process, etc., and achieve the effects of reducing dust volume, being convenient to carry, and having a wide range of sources.

Active Publication Date: 2016-11-16
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the practical engineering construction problems such as complex charging process, time-consuming and labor-intensive, and provide a non-coupling pre-split charging device and its use method

Method used

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  • Non-coupling pre-splitting explosive charging device and using method
  • Non-coupling pre-splitting explosive charging device and using method
  • Non-coupling pre-splitting explosive charging device and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 , 2 , 3, an uncoupled pre-split charging device is composed of a variable-diameter uncoupled pre-split charging cartridge 1 and an umbrella-shaped charging device 2 .

[0031] The variable-diameter uncoupled pre-split cartridge 1 consists of a bottom cover 101, a bottom barrel 103 threadedly connected with the bottom cover 101, and a group of intermediate barrels 104 in the bottom barrel 103, which are inserted in this group in turn. The top cylinder 105 in the intermediate cylinder 104 is composed of a central positioning ring 106 threadedly connected to the top cylinder 105 and a manual pull rope 107 provided on the central positioning ring 106. The bottom outer surface of the intermediate cylinder 104 and the top cylinder 105 All have rubber anti-slip sleeves 102, and the diameter of the cylinders of the group of intermediate cylinders 104 decreases sequentially from bottom to top;

[0032] The centering ring 106 should be a set of spare parts with di...

Embodiment 2

[0042] The test pre-split hole depth is 15 m, the pre-split hole diameter is 250 mm, and the blasting hole filling length is 4.5 m. In the device of implementation 1, the cone angle of the truncated conical tube with variable diameter not coupled to the pre-split cartridge is 0.4°, the diameter of the upper end of the top tube is 93 mm, and the diameter of the lower end of the bottom tube is 240 mm, including each tube in the middle tube. The length is 1.64 m, and there are 7 cylinders in total; the diameter of the cylinder of the umbrella-shaped chargeer used is 50 mm.

[0043] The steps of the specific use method of the uncoupled pre-split charging device are as follows:

[0044] (1) Assemble a top cylinder, a bottom cylinder and 5 intermediate cylinders into a variable-diameter uncoupled pre-split cartridge, install the bottom cover on the lower end of the bottom cylinder and screw it tightly;

[0045] (2) Put the combined cartridges into the orifice of the gun hole, pull ...

Embodiment 3

[0051] The test pre-split hole depth is 12 m, the pre-split hole diameter is 220 mm, and the blast hole filling length is 3.6 m. In the device of implementation 1, the cone angle of the conical tube with variable diameter not coupled with the pre-split cartridge is 0.4°, the diameter of the upper end of the top tube is 108 mm, and the diameter of the lower end of the bottom tube is 210 mm, including the diameter of each tube of the middle tube. The length is 1.34 m, and there are 7 cylinders in total; the diameter of the cylinder with the umbrella-shaped charge in the hole is 60 mm.

[0052] The steps of the specific use method of the uncoupled pre-split charging device are as follows:

[0053] (1) Select one top cylinder, one bottom cylinder and 5 intermediate cylinders, assemble them into variable diameter uncoupled pre-split cartridges, install the bottom cover at the lower end of the bottom cylinder and screw it tightly;

[0054] (2) Put the combined cartridges into the o...

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Abstract

The invention aims to solve the actual engineering construction problems that the explosive charging process is complex, time is consumed and labor is consumed, provides a non-coupling pre-splitting explosive charging device and a using method, and belongs to the technical field of surface blasting engineering. The device is composed of a variable-diameter non-coupling pre-splitting explosive charging barrel and an umbrella-shaped explosive charging device; and the umbrella-shaped explosive charging device is located on the upper portion of the variable-diameter non-coupling pre-splitting explosive charging barrel. According to the device, the length of the explosive charging barrel can be flexibly and fast changed according to the on-site hole depth changing length and the non-coupling coefficient, and the requirement that the explosive charging non-coupling coefficient is sequentially decreased from bottom to top in the whole explosive charging device is met; the device can enter blast holes of different diameters and is automatically opened according to the size of the blast holes, and explosives can be conveniently injected into an explosive charging vehicle; and blasting crushing regions and the blasting tight bottom can be reduced, and side walls are effectively protected.

Description

technical field [0001] The invention belongs to the technical field of open-air blasting engineering, and particularly relates to an uncoupled pre-split charging device and a method for using the same. Background technique [0002] There are some examples of side gang blasting in slope excavation of large hydropower projects, rock and soil blasting or foundation pit excavation blasting in urban construction, assisted blasting in large open-pit mine mining, and production blasting in some non-metallic mines. The common requirements are: to reduce the damage to the side slope caused by explosives, to protect the integrity of the side help, thereby reducing the maintenance cost of the side slope; to reduce the intensity of blasting seismic waves, to reduce the vibration damage to the side slope caused by blasting and the excessive crushing around the blasthole. [0003] The uncoupling charge technology is often used in practical engineering. The radial uncoupling is realized by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/08F42D3/04
CPCF42D1/08F42D3/04
Inventor 潘鹏飞孙厚广徐连生徐冬林栾辉刘鑫徐振洋张大宁
Owner ANSTEEL GRP MINING CO LTD
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