Lifting-hanging type bidirectional non-coupling presplitting blasting charge device and application method

A pre-split blasting and charging technology, which is applied in the open-air pre-split blasting project, in the field of a lift-type two-way uncoupled pre-split blasting charging device, can solve the problem of reducing the scope of the blasting crushing area, reducing the blasting vibration effect, and the complex charging process. and other problems, to achieve the effect of low production cost, reduction of excessive crushing, and a wide range of sources

Active Publication Date: 2017-11-24
UNIV OF SCI & TECH LIAONING
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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 provide a hanging type two-way non-coupling pre-splitting blasting charge device and its use method, which can solve the practical engineering construction problems such as complex charge process, time-consuming, and labor-consuming, and can choose different diameters according to actual blasting conditions. The length of the axial distance between the charge tug and the charge can significantly reduce the scope of the blasting fragmentation area, reduce the effect of blasting vibration, and protect the stability of the side rock mass

Method used

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  • Lifting-hanging type bidirectional non-coupling presplitting blasting charge device and application method
  • Lifting-hanging type bidirectional non-coupling presplitting blasting charge device and application method
  • Lifting-hanging type bidirectional non-coupling presplitting blasting charge device and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The blasting area is phyllite, the Platts firmness factor is 10, the pre-splitting hole depth is 15m, the pre-splitting hole diameter is 250mm, the filling length of the blast hole is 5.2m, and the hole spacing is 3m. Choose a density of 1.1g / cm 3 No. 2 rock emulsion explosive, the diameter of the explosive roll is 90mm, the length is 40mm, the diameter of the charge tug 2 is 92mm, the diameter of the charge top barrel 1 is 92mm, the length of the charge tug 2 is 30mm, and the interval length of the explosive roll is 1m , the length of the sling is 7m, and mark at 5.2m after removing the fixed length.

[0047] Concrete process implementation steps are as follows:

[0048] 1) According to the diameter of the selected explosive roll, select the charge tug 2 and the charge jack 1, and put the explosive roll into the charge tug 2 and the charge jack 1;

[0049] 2) According to the designed explosive roll interval length of 1m, select the tug connection element 3, pass the l...

Embodiment 2

[0054] The blasting area is mixed rock, the Platt's firmness factor is 10-14, the pre-splitting hole depth is 12m, the pre-splitting hole diameter is 200mm, the blasthole filling length is 3m, and the hole spacing is 2.4m. Choose a density of 1.1g / cm 3 No. 2 rock emulsion explosive, the diameter of the explosive roll is 80mm, the length is 40mm, the diameter of the charge tug 2 is 82mm, the diameter of the charge top barrel 1 is 82mm, the length of the charge tug 2 is 30mm, and the interval length of the explosive roll is 1.1 m, the length of the sling is 5m, and mark at 3m after removing the fixed length.

[0055] Concrete process implementation steps are as follows:

[0056] 1) According to the diameter of the selected explosive roll, select the charge tug 2 and the charge jack 1, and put the explosive roll into the charge tug 2 and the charge jack 1;

[0057] 2) According to the designed explosive roll interval length of 1.1m, select the tug connecting element 3, pass the...

Embodiment 3

[0062] The blasting area is mixed rock, the Platts firmness coefficient is 8-10, the pre-splitting hole depth is 10m, the pre-splitting hole diameter is 150mm, the blast hole filling length is 2m, and the hole spacing is 1.8m. Choose a density of 1.1g / cm 3 No. 2 rock emulsion explosive, the diameter of the explosive roll is 70mm, the length is 50mm, the diameter of the charge tug 2 is 72mm, the diameter of the charge top barrel 1 is 72mm, the length of the charge tug 2 is 35mm, and the interval length of the explosive roll is 0.5 m, the length of the sling is 4m, and a mark is made at 2m after the fixed length is removed. Specific process implementation

[0063] Concrete process implementation steps are as follows:

[0064] 1) According to the diameter of the selected explosive roll, select the charge tug 2 and the charge jack 1, and put the explosive roll into the charge tug 2 and the charge jack 1;

[0065] 2) According to the designed explosive roll interval length of 0....

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Abstract

The invention discloses a lifting-hanging type bidirectional non-coupling presplitting blasting charge device which comprises charge pull barrels, pull barrel connecting elements, a charge top barrel and a top cover. The charge pull barrels are sequentially connected through the pull barrel connecting elements. The charge top barrel is mounted at the uppermost end. The top cover is mounted at the upper end of the charge top barrel. Compared with the prior art, the lifting-hanging type bidirectional non-coupling presplitting blasting charge device has the beneficial effects that according to the lifting-hanging type bidirectional non-coupling presplitting blasting charge device, control over charge axial non-coupling and radial non-coupling coefficients can be achieved, explosive columns in presplitting holes achieve uniform charge, toes after blasting are avoided, excessive crushing of hole walls is reduced, and damage of blasting to rock bodies is effectively reduced; and materials used in the device are wide in source, the manufacturing cost is low, carrying is convenient during field use, operation is simple, and the device can be used for presplitting blasting of various blasting projects.

Description

technical field [0001] The invention belongs to the technical field of open-air blasting engineering, and relates to open-air pre-splitting blasting engineering, in particular to a hanging-type two-way non-coupling pre-splitting blasting charge device and a use method. Background technique [0002] There are some common requirements for side-by-side blasting in large-scale open-pit mine mining, pre-splitting blasting of foundation surface in slope excavation of large-scale hydropower projects, rock-soil blasting or foundation pit pre-splitting blasting in urban construction, namely: Explosives can damage the side walls and protect the integrity of the side walls, thereby reducing the maintenance cost of the slope; reducing the blasting seismic wave intensity, reducing the vibration damage of the blasting to the side slope and excessive crushing around the blast hole. [0003] In pre-splitting blasting engineering, the charge technology combining radial uncoupling and axial u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/10F42D3/04
CPCF42D1/10F42D3/04
Inventor 徐振洋于妍宁郭连军
Owner UNIV OF SCI & TECH LIAONING
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