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Emulsion explosive medium-length-hole quick-blasting construction method used in coal mine high-temperature fire area

An emulsion explosive and construction method technology, applied in the field of blasting, can solve the problems such as the inability to reach a temperature area that can be reduced to safe construction, inconvenient construction, poor economic benefits, etc., and achieves reduction of economic costs and operation difficulty, safe and fast construction, and simple operation. Effect

Inactive Publication Date: 2016-04-20
CHINA GEZHOUBA GRP YIPULI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to reasons such as cost and safety, there are certain deficiencies in these methods at present.
In some high-temperature areas, the use of water injection cannot reach the temperature area where the construction is safe; the use of high-temperature blasting equipment or heat-insulating packaging has problems such as inconvenient construction and poor economic benefits.

Method used

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  • Emulsion explosive medium-length-hole quick-blasting construction method used in coal mine high-temperature fire area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the construction method of rapid blasting of deep holes in emulsion explosives in high-temperature fire areas of coal mines includes the following steps:

[0022] ① Determine the blasting point and the number of blasting holes in the high-temperature fire area of ​​the coal mine. In this embodiment, the number of blasting holes is 7, and the blasting holes are excavated. The blasting holes are used as the first-order blasting holes, and the depth of the first-order blasting holes is 5m;

[0023] ②A detonating cord 2 is set corresponding to each blasting hole, and one end of each detonating cord 2 is connected to the detonating object 1. One end of the detonating cord, the other end of the leading detonating cord is connected to the detonator;

[0024] ③Each blast hole corresponds to a worker, and each worker first fills in the blasting material 1 at the bottom of the respective blast hole, and then fills two explosive columns 2 into the blast...

Embodiment 2

[0029] Such as figure 1 As shown, the construction method of rapid blasting of deep holes in emulsion explosives in high-temperature fire areas of coal mines includes the following steps:

[0030] ① Determine the blasting point and the number of blasting holes in the high-temperature fire area of ​​the coal mine. In this embodiment, the number of blasting holes is 8, and the blasting holes are excavated. The blasting holes are used as the first-order blasting holes, and the depth of the first-order blasting holes is 8m;

[0031] ②A detonating cord 2 is set corresponding to each blasting hole, and one end of each detonating cord 2 is connected to the detonating object 1. One end of the leading detonating cord, the other end of the leading detonating cord is connected to the detonator;

[0032] ③Each blast hole corresponds to a worker, and each worker first fills initiating materials 1 into the bottom of their respective blast holes, and then fills two explosive columns 2 into ...

Embodiment 3

[0037] Such as figure 1 Shown, a kind of coal mine high temperature fire area emulsion explosive medium deep hole rapid blasting construction method, comprises the following steps:

[0038] ① Determine the blasting point and the number of blasting holes in the high-temperature fire area of ​​the coal mine. In this embodiment, the number of blasting holes is 8, and the blasting holes are excavated. The blasting holes are used as the first-order blasting holes, and the depth of the first-order blasting holes is 6m;

[0039] ②A detonating cord 2 is set corresponding to each blasting hole, and one end of each detonating cord 2 is connected to the detonating object 1. One end of the leading detonating cord, the other end of the leading detonating cord is connected to the detonator;

[0040] ③Each blast hole corresponds to a worker, and each worker first fills in the blasting material 1 at the bottom of the respective blast hole, and then fills two explosive columns 2 into the blas...

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Abstract

The invention discloses an emulsion explosive medium-length-hole quick-blasting construction method used in a coal mine high-temperature fire area. Deep blasting and shallow blasting are adopted, explosive cylinder and a blockage cylinder corresponding to the two-time blasting are specially made, and networking and explosive charging steps are exchanged. The construction method does not use high-temperature-resistance equipment and does not adopt temperature-lowering measures, and correspondingly the economic cost and operative difficulty are reduced. In addition, a two-order blasting mode is adopted, the method that explosive charging is performed after networking is adopted, and the method is matched with the specially made explosive cylinder, so that the time for one-time blasting is shortened, safe and quick construction is ensured, and meanwhile simple operation and a safe, reliable and good blasting effect are achieved.

Description

technical field [0001] The invention relates to the technical field of blasting, in particular to a construction method for rapid blasting of deep holes in emulsion explosives in high-temperature fire areas of coal mines. Background technique [0002] Deep hole bench blasting mining is the main mining method in open pit coal mines. Due to various reasons, spontaneous combustion of coal fields is very serious in the northwestern region where there are many open-pit coal mines in my country. According to the survey, there are 56 spontaneous combustion fires in coalfields in northern my country, among which the coal seam outcrop fires in the three autonomous regions of Xinjiang, Inner Mongolia and Ningxia are the most serious. These open-pit coal mines with spontaneous combustion have brought great safety hazards to deep-hole blasting mining. However, blasting accidents caused by mining operations in this area do occur from time to time. For example, the two blasting accident...

Claims

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Application Information

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IPC IPC(8): F42D1/08F42D3/00
CPCF42D1/08F42D3/00
Inventor 万红彬李晓虎陈红刚
Owner CHINA GEZHOUBA GRP YIPULI CO LTD
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