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Explosion method capable of enhancing bar shaped explosive explosion energy utilization rate

A blasting energy and utilization rate technology, applied in the field of blasting, can solve problems such as increased engineering costs, instability and low intensity of industrial explosives, and unsatisfactory improvement effects

Inactive Publication Date: 2004-12-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not only a waste of blasting equipment, but also the improvement effect is not ideal
[0003] In addition, due to the instability and low intensity of industrial explosives, when used in hard rock blasting, water holes, and underwater blasting, explosives with higher intensity must be used in order to match the blastability of rocks. Most of the general high-intensity explosives are mixed with high-energy explosives, such as TNT, nitroglycerin, etc., and their cost is relatively high, which will increase the project cost

Method used

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  • Explosion method capable of enhancing bar shaped explosive explosion energy utilization rate
  • Explosion method capable of enhancing bar shaped explosive explosion energy utilization rate
  • Explosion method capable of enhancing bar shaped explosive explosion energy utilization rate

Examples

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Effect test

Embodiment 1

[0034] according to figure 1 Manufacture prefabricated emulsified charge, use 500mm long and 20mm diameter colloidal explosive roll as the priming charge 1, and the detonation velocity is greater than 6.5mm·μs -1 , the detonation velocity is 4.5mm·μs -1 The emulsified ammonium oil explosive is the main explosive 2, made into a roll with a length of 500 mm and a diameter of 90 mm. figure 2 The way is to put it in the Φ100mm hole to implement water hole or underwater blasting.

Embodiment 2

[0036] according to image 3 Charged in the same way, the detonation velocity is greater than 6.9mm·μs -1 The detonating cord is the detonating charge 1, and the 8 # The detonator 3 is tied to the detonating cord, placed in a Φ140mm hole, and the injection detonation velocity is 3.5mm·μs -1 Powdered ammonium oil explosives are used as the main explosive 2, and the blasting effect is good, and there is no yellow smoke in the 14m deep hole blasting.

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Abstract

The invention discloses a method for reducing over deep of borehole for water-resistant type circumjacent shaped charge loaded at bottom of ultra deep hole. Characters are that 4-8 troughs or sockets with or without cover for collecting energy are setup around column type charges, and then the said troughs or sockets are sealed. Generated transverse jet flow from explosion penetrates into rock, making rock produce cracks. Gas generated from explosive in accessory holes destroys bottom of hole horizontally, playing effect of flatting base. Thus, ultra deep of drilling hole can be reduced. The invented method is also plays effect of initiating bomb.

Description

technical field [0001] The invention belongs to the technical field of blasting, and in particular relates to a method for improving the blasting energy utilization rate of strip explosives. Background technique [0002] Blasting engineering is widely used in ore mining, water conservancy, civil engineering, transportation and other construction projects. Medium and deep hole blasting and chamber are the most important blasting methods used in the above projects. In cavern blasting, strip charges are often used; in medium and deep hole blasting, the charge form itself is a strip charge. Since the commonly used industrial explosives are mainly ammonium nitrate, and ammonium nitrate explosives are characterized by unstable detonation speed and explosive force, and are easily affected by environmental conditions, such as temperature, humidity, storage period, and charge form. The detonation performance of such explosives has a great influence. When using strip charges for bla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/08
Inventor 李晓杰阎鸿浩曹香光赵雷段宝贵马玉罄邢占胜刘宝宏
Owner DALIAN UNIV OF TECH
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