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Explosion-method quick hole-blocking device

An explosion method and hole plugging technology, applied in the field of blasting, can solve the problems of high cost, limited device length, limited effect of increase, etc.

Active Publication Date: 2015-11-11
UNIV OF SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods mainly rely on increasing the friction between the newly added device and the hole wall to improve the plugging effect. Not only the cost is high, but the length of the device is limited, and the effect of the increase is also limited.
This method also does not utilize a longer plugging section, and the plugging effect of the water hole is limited.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a plugging device with a cylindrical structure is designed, and the plugging device is composed of a shell 1, a filler 2, a plugging charge 3, an electric detonator 4, and an electric wire 5. Shell 1 is made of iron. According to the diameter of the blast hole used, the outer diameter of shell 1 is designed to be 130mm, the wall thickness is 5mm, and the length is 50cm; the plugging charge 3 is a piece of emulsion explosive with a specification of φ32mm3150g, which is located in the center of the plugging device. ; The filler 2 is sand; the detonating electric detonator 4 is a commonly used delayed electric detonator, MS5 (110ms).

[0018] When using, see figure 2 , The blast hole 6 is a water hole with a diameter of 140mm and a depth of 10.0m. First, the main charge 7 and the detonator 8 (MS15, 880ms) are loaded into the blast hole 6. The main charge 7 is a strip-packed emulsion explosive with a diameter of φ130mm and a weight of 4kg. The ...

Embodiment 2

[0021] see image 3 . The hole plugging shell of embodiment 2 uses an open iron cylindrical structure. The blast hole 9 is a dry hole with a diameter of φ160mm and a depth of 12.0m. The used shell 12 has an outer diameter of 150 mm, a wall thickness of 10 mm, and a length of 40 cm; the emulsion explosive 3 is used as a plugging charge in the shell, and its specification is φ32mm3150g, which is arranged in the center of the shell. Each housing cooperates with a plugging drug pack to form the quick plugging device described in this patent. In Example 2, two plugging devices were used. The charge 10 at the bottom of the blast hole 9 uses powdery emulsion explosive, coupled charge, and the charge length is 10.0m. The plugging section 2 uses rock-soil and sand mixture, and two of the same plugging devices are set in the filling section, and the total length of the plugging section can be reduced to 2.0m. blocking device such as image 3 Arrangement, the distance from the uppe...

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Abstract

The invention relates to an explosion-method quick hole-blocking device. The explosion-method quick hole-blocking device comprises a hole-blocking housing and hole-blocking explosive package, wherein the hole-blocking housing is in the shape of a barrel; the hole-blocking explosive package is positioned in the housing, positioned at the axis of the housing and positioned on the middle position of the housing; and a hole-blocking material is filled between the hole-blocking explosive package and the inner wall of the housing, so that the hole-blocking explosive package is conveniently positioned in the housing. The explosion-method quick hole-blocking device has the advantages of being simple and convenient to use, and good in sealing and blocking effect, can effectively reduce the sealing and blocking length, can improve blast hole utilization efficiency and can improve rock breaking effect, and is suitable for various blast hole blocking requirements.

Description

technical field [0001] The invention belongs to the technical field of blasting, in particular to a blast hole plugging device. Background technique [0002] In the blasting operation, the blast hole needs to be blocked after the blast hole is filled with explosives, referred to as "plugging hole". The plugging quality directly determines the blasting effect. Poor plugging quality often leads to problems of punching and high block rate, and even serious consequences of flying stones hurting people. The main reasons for poor plugging quality are as follows: (1) insufficient plugging length; (2) improper selection of plugging objects or too loose; (3) water in the blast hole (ie, water hole). In order to ensure the quality of plugging, in addition to the reasonable selection of plugging materials, other commonly used methods include: (1) Increase the length of packing: increasing the length of packing can effectively improve the quality of hole plugging, but too long packing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/18
Inventor 马宏昊王飞沈兆武李战军崔晓荣林谋金洪泳崔宇
Owner UNIV OF SCI & TECH OF CHINA
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