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A rapid hole plugging device by explosive method

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: 2018-01-09
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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  • A rapid hole plugging device by explosive method
  • A rapid hole plugging device by explosive method
  • A rapid hole plugging device by explosive method

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 above-mentioned identical plugging devices are installed 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,...

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Abstract

The invention relates to a rapid hole plugging device by an explosion method, comprising: a hole plugging shell and a hole plugging charge; the hole plugging shell is cylindrical, and the hole plugging charge is located inside the shell, on the axis of the shell, and in the middle of the shell Position; plugging material is filled between the plugging drug pack and the inner wall of the housing, so as to realize the positioning of the plugging drug pack inside the housing. The invention has the advantages of simple use and good plugging effect, can effectively reduce the plugging length, improve the utilization rate of the blast hole and the rock breaking effect, and is suitable for various plugging requirements of the blast hole.

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 Patents(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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