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Device and method for on-site testing of explosive detonation velocity and detonation pressure in charge hole

A field test and charging hole technology, applied in the field of explosive mechanics, can solve the problems of high cost and unsuitable promotion, and achieve the effects of low cost, convenient testing and good waterproof performance.

Pending Publication Date: 2018-02-16
鞍钢矿业爆破有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1980s, domestic professionals used piezoelectric crystal pressure sensing elements to conduct field tests on the detonation pressure in the hole, but the cost was high and it was not suitable for promotion in engineering.

Method used

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  • Device and method for on-site testing of explosive detonation velocity and detonation pressure in charge hole
  • Device and method for on-site testing of explosive detonation velocity and detonation pressure in charge hole
  • Device and method for on-site testing of explosive detonation velocity and detonation pressure in charge hole

Examples

Experimental program
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Effect test

Embodiment

[0035] Tested at a surface mining site. The mine is drilled with a YZ-35 roller cone drilling rig, with a diameter of 250 mm and a depth of 16 meters. It adopts a continuous charge structure. At a distance of 2 meters, 5 meters and 8 meters from the bottom of the borehole, three devices with PVDF piezoelectric diaphragms as pressure sensing elements are arranged to test the detonation velocity and detonation pressure of explosives on-site in the charge hole, marked as measuring points 1. Measuring point 2 and measuring point 3.

[0036]See Table 1 for the burst pressure test values ​​of the three test units and the statistics of the signal arrival time.

[0037] Table 1 Burst pressure test value and signal arrival statistics

[0038]

Measuring point 1

Measuring point 2

Measuring point 3

Explosion pressure (GPa)

9.1

10.2

9.6

Signal arrival time (ms)

25.41

25.94

26.46

[0039] According to the data listed in the table ...

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Abstract

The invention relates to the field of mechanics of explosion, in particular to a device and method for on-site testing of the explosive detonation velocity and detonation pressure in a charge hole. The device for the on-site testing of the explosive detonation velocity and detonation pressure in the charge hole includes a water container, a PVDF piezoelectric diaphragm, a connector, a data line, and a data collector. The detonation velocity and detonation pressure method is that a plurality of devices for testing the explosive detonation velocity and detonation pressure are arranged in the charge hole before blasting and are connected with the data collector to form a data acquisition system, a detonation velocity value and a detonation pressure value collected by each device for testing the explosive detonation velocity and detonation pressure are obtained after the blasting, and a detonation velocity average value and a detonation pressure average value of the plurality of devices for testing the explosive detonation velocity and detonation pressure are solved. The device and method in the invention have the advantages of simple structure and convenient use, the system can be used for testing the explosive detonation velocity and detonation pressure, the test is convenient, the precision is high, and the cost is low.

Description

technical field [0001] The invention relates to the field of explosion mechanics, in particular to a device and method for testing the detonation velocity and detonation pressure of explosives on site in a charge hole. Background technique [0002] The on-site mixing technology of industrial explosives has been widely used in my country's blasting industry. The on-site mixing technology of explosives has outstanding advantages such as high charge efficiency, good blasting quality, low cost, convenient use and good safety, and is becoming more and more popular. Development direction of explosives production and blasting services. Explosive explosion is an extremely high-speed chemical reaction process, which has the characteristics of heat release, large amount of gas generation, and high-speed reaction. The ability and damage of explosion to the surrounding medium are mainly reflected in the degree of fragmentation of the surrounding blasting medium. The parameters that char...

Claims

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Application Information

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IPC IPC(8): G01P3/50G01L5/14
CPCG01L5/14G01P3/50
Inventor 贾建军乔继延梁尔祝冯春郭汝坤邵猛李世海李骏雄
Owner 鞍钢矿业爆破有限公司
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