CN112557620A - Method for testing work done by explosion of electronic detonator - Google Patents
Method for testing work done by explosion of electronic detonator Download PDFInfo
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- CN112557620A CN112557620A CN202011252819.9A CN202011252819A CN112557620A CN 112557620 A CN112557620 A CN 112557620A CN 202011252819 A CN202011252819 A CN 202011252819A CN 112557620 A CN112557620 A CN 112557620A
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- 238000004880 explosion Methods 0.000 title claims abstract description 54
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002360 explosive Substances 0.000 claims abstract description 36
- 230000035939 shock Effects 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000002474 experimental method Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 238000005474 detonation Methods 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 claims 1
- 238000005422 blasting Methods 0.000 abstract description 4
- 239000012634 fragment Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C21/00—Checking fuzes; Testing fuzes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/14—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force of explosions; for measuring the energy of projectiles
Abstract
The invention discloses a method for testing work done by explosion of an electronic detonator, which comprises the following steps: s1: connecting the explosion module, the pressure testing device and the signal conversion device in sequence; s2: setting two electronic detonators to form an annular loop among the blasting device, the first electronic detonator and the signal conversion device; s3: measuring the mass of the explosive package to be exploded; s4: an annular loop is formed among the blasting device, the second generator detonator, the explosive to be blasted and the signal conversion device; s5: the explosion device is discharged, the first electronic detonator is detonated, the shock wave generated by the first electronic detonator is transmitted to the signal conversion device through the receiving end, then the second electronic detonator inserted into the explosive package to be exploded is detonated, the energy released by the electronic detonator is used for causing the explosive package to be exploded, and then the explosion shock wave generated by the first electronic detonator and the second electronic detonator is transmitted to the signal conversion device; s6: recording the P-t curves recorded for the first time and the second time as P1 and P2 respectively; s7: the shock wave energy and the bubble energy are calculated. The invention has accurate experimental result and simple and convenient operation.
Description
Technical Field
The invention relates to the field of practical application of electronic detonators, in particular to a method for testing the explosion work of the electronic detonators.
Background
The digital electronic detonator is a detonating device which adopts an electronic chip control module to realize accurate delay. In recent years, as the demand of China on the safety control of the use of civil explosives is increasingly urgent, under the condition, the digital electronic detonator perfectly meets the urgent control requirement of China on the civil explosives. Therefore, the digital electronic detonator is rapidly developed in China under the vigorous popularization of China, the digital electronic detonator technology is continuously developed and perfected, the technical superiority is more and more widely accepted in the blasting world, and most obviously, the application in engineering is more and more common, and the method is expanded to common mines and quarries from the early rare and valuable mineral mining field. Nowadays, digital electronic detonators are widely used to replace other industrial detonators in industry. This is because the digital electronic detonators have unique advantages in safety, convenience of use and economy of use, compared to conventional industrial detonators and nonel detonators.
The existing method for testing the explosion work of the electronic detonator does not exist, only the industrial detonator has a related test method, the current industrial detonator explosion work test represents the work capacity through a small lead expansion experiment, and the essence of the test is to represent the work capacity of the detonator through the volume difference of the small lead before and after the detonator explosion. Firstly, the material, the size and the processing quality of the small lead have essential influence on an experimental result, and the small lead with different materials and sizes is different in volume generated by detonator explosion, so that the work capacity of a tested detonator has deviation, and the material and the size of the small lead are consistent in the experimental process; secondly, volume readings of the small lead before and after explosion cause errors, so that the experimental result is inaccurate; in addition, temperature reading errors also affect the experiment, because in the experiment step, a thermometer needs to be put into the lead hole for 10min, then the temperature value is read, and the work capacity of the detonator is corrected through a temperature correction coefficient; in addition, the filling material and the length difference also have influence on the experimental result, and even in the small lead experiment, the explosion of the detonator can generate flying fragments, so that the experiment fails.
Therefore, the research on the performance of the current digital electronic detonator explosion work test is necessary and is also a problem needing attention in the current engineering blasting. In view of the background, the problem that how to provide a method for testing the explosion work of the electronic detonator needs to be solved urgently by the technical personnel in the field is solved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a method for testing the explosion work of the electronic detonator, which is simple to operate and high in test precision, can test the actual work capacity of the electronic detonator, can also test the energy lost by the electronic detonator due to the fragments, and has important significance for the safe application of the electronic detonator in engineering.
According to the embodiment of the invention, the method for testing the explosion work of the electronic detonator comprises the following steps:
s1: connecting the explosion module, the pressure testing device and the signal conversion device in sequence;
s2: setting two electronic detonators, wherein one end of a first electronic detonator is connected with an explosion device, and the other end of the first electronic detonator is aligned with a signal conversion device, so that an annular loop is formed among the explosion device, the first electronic detonator and the signal conversion device;
s3: measuring the mass of the explosive to be blasted, wherein the explosive to be blasted is integral multiple of equivalent TNT of the electronic detonator and is accurate to 10- 2g；
S4: one end of the second electronic detonator is connected with the detonating device and inserted into the explosive package to be detonated, and one end of the explosive package to be detonated is aligned to the signal conversion device, so that an annular loop is formed among the detonating device, the second electronic detonator, the explosive package to be detonated and the signal conversion device;
s5: the method comprises the steps that an explosion device is enabled to discharge, a first electronic detonator is ignited, shock waves generated by the first electronic detonator are transmitted to a signal conversion device through a receiving end, the signals convert the shock waves into electric signals, a P-t curve is displayed on a DSO, then a second electronic detonator inserted into a powder charge to be exploded is ignited, energy released by explosion of the electronic detonator causes the powder charge to be exploded, then the explosion shock waves generated by the first electronic detonator and the second electronic detonator are transmitted to the signal conversion device, and the signals convert the shock waves into the electric signals, and a new P-t curve is displayed on the DSO;
s6: respectively recording the P-t curves recorded for the first time and the second time as P1，P2；
S7: the shock wave energy and the bubble energy are calculated.
Preferably, the calculation formula of the shock wave energy is as follows:
P(t)＝Pm·e-t/θ
wherein Es-shock wave energy, kJ; pi-circumference ratio, R-horizontal distance from the center of the sensor sensitive element, m; rhow-density of water, Cw-speed of sound in water, θ -decay time, s; p (t) -the law of variation of the pressure of the shock wave in the water with time t, Pa.
Preferably, the calculation formula of the shock wave energy is as follows:
in the formula, Eb-bubble energy, kJ; t is tb-the computer recorded bubble pulse period, s; pH-hydrostatic pressure, Pa; rhowDensity of water, kg/m3。
Preferably, the electronic detonator and the electronic detonator inserted into the explosive package to be exploded have the same distance from the sensitive element of the pressure sensor.
Preferably, the electronic detonator and the explosive package to be exploded have the same model.
Preferably, the mass of the explosive to be blasted is integral multiple n of equivalent TNT of the electronic detonator, and the value range of n is 10-20.
Preferably, the method for testing the explosion work of the electronic detonator is applied to the experiment of the detonation performance of the electronic detonator.
Compared with the prior art, the invention has the beneficial effects that:
the invention can eliminate the energy of the self-fragment of the electronic detonator explosion so as to measure the actual explosion energy of the primary electronic detonator, has simple operation and high experimental precision, can test the actual work capacity of the primary electronic detonator and can also measure the energy lost by the fragment of the electronic detonator, and has important significance for the safe application of the electronic detonator in engineering.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method for testing work done by explosion of an electronic detonator, which is provided by the invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The explosive bag and the sensitive element of the test pressure sensor are arranged in the explosion water pool, and a certain horizontal distance exists between the explosive bag and the sensitive element of the test pressure sensor. Especially, the location of the explosives and the sensors is horizontal, which may not affect the experimental results. The shock wave generated by the explosive package in water acts on the sensitive element of the pressure sensor, the shock wave is transmitted to the DSO by the sensitive element of the pressure sensor through the constant current source, the curve of the generated explosion shock wave is recorded, and the shock wave energy Es and the bubble energy E generated by the digital electronic detonator are calculated according to the recorded shock wave curve and a formulab。
The invention has high experimental repeatability, accurate experimental result and simple and convenient operation, and the computer can process the experimental data to test the actual work capacity of the electronic detonator and measure the energy lost by the broken piece of the electronic detonator:
referring to fig. 1, a test method for work done by explosion of an electronic detonator comprises the following steps:
s1: sequentially connecting an explosion module, wherein the explosion module is an exploder, a detonator and other explosion devices, and a pressure testing device and a signal conversion device;
s2: setting two electronic detonators, wherein one end of a first electronic detonator is connected with an explosion device, and the other end of the first electronic detonator is aligned with a signal conversion device, so that an annular loop is formed among the explosion device, the first electronic detonator and the signal conversion device;
s3: measuring the mass of the explosive to be blasted, wherein the explosive to be blasted is integral multiple of equivalent TNT of the electronic detonator and is accurate to 10- 2g；
S4: one end of the second electronic detonator is connected with the detonating device and inserted into the explosive package to be detonated, and one end of the explosive package to be detonated is aligned to the signal conversion device, so that an annular loop is formed among the detonating device, the second electronic detonator, the explosive package to be detonated and the signal conversion device;
s5: the method comprises the steps that an explosion device is enabled to discharge, a first electronic detonator is ignited, shock waves generated by the first electronic detonator are transmitted to a signal conversion device through a receiving end, the signals convert the shock waves into electric signals, a P-t curve is displayed on a DSO, then a second electronic detonator inserted into a powder charge to be exploded is ignited, energy released by explosion of the electronic detonator causes the powder charge to be exploded, then the explosion shock waves generated by the first electronic detonator and the second electronic detonator are transmitted to the signal conversion device, and the signals convert the shock waves into the electric signals, and a new P-t curve is displayed on the DSO;
s6: respectively recording the P-t curves recorded for the first time and the second time as P1，P2；
S7: the shock wave energy and the bubble energy are calculated.
The calculation formula of the shock wave energy is as follows:
P(t)＝Pm·e-t/θ
wherein Es-shock wave energy, kJ; pi-circumference ratio, R-horizontal distance from the center of the sensor sensitive element, m; rhow-density of water, Cw-speed of sound in water, θ -decay time, s; p (t) -the law of variation of the pressure of the shock wave in the water with time t, Pa.
The calculation formula of the shock wave energy is as follows:
in the formula, Eb-bubble energy, kJ; t is tb-the computer recorded bubble pulse period, s; pH-hydrostatic pressure, Pa; rhowDensity of water, kg/m3。
The experimental environment is carried out underwater, and the distances between an underwater electronic detonator and an electronic detonator inserted into a explosive package to be exploded are the same as those between the underwater electronic detonator and a pressure sensor sensitive element; the electronic detonators and the explosive bags to be blasted in the experimental test obey the three same principles, the same factory, the same batch and the same model; the mass of the explosive package is integral multiple n of equivalent TNT of the electronic detonator, and the value range is 10-20.
Example 1:
the electronic detonator and the pressure sensor are fixed on a metal rod to be kept on the same horizontal line and keep a certain distance at the horizontal position.
And (3) placing the fixed electronic detonator and the pressure sensor into an explosion water pool, wherein the depth of the electronic detonator and the pressure sensor is 1/2 of the depth of the water pool, and binding a certain weight of object blocks below the electronic detonator or the electronic detonator inserted with the explosive package to ensure that the electronic detonator and the pressure sensor are still kept horizontal underwater.
The electronic detonator is respectively connected with the initiation device, the pressure sensor is connected with the constant current source, the DSO and the computer.
And (4) connecting the devices, detonating and recording the obtained data.
The calculated data of shock wave energy and bubble energy of the single electronic detonator is recorded as E1, and the electricity inserted into the explosive packageThe shock wave energy and bubble energy of the sub-detonators are recorded as E2, so the actual work capacity of a primary electronic detonator is:
n ranges from 10 to 20; the energy used for fragmentation was: e' -E1。
The invention can eliminate the energy of the self-fragment of the electronic detonator explosion so as to measure the actual explosion energy of the primary electronic detonator, has simple operation and high experimental precision, can test the actual work capacity of the primary electronic detonator and can also measure the energy lost by the fragment of the electronic detonator, and has important significance for the safe application of the electronic detonator in engineering.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A method for testing work done by explosion of an electronic detonator is characterized by comprising the following steps:
s1: connecting the explosion module, the pressure testing device and the signal conversion device in sequence;
s2: setting two electronic detonators, wherein one end of a first electronic detonator is connected with an explosion device, and the other end of the first electronic detonator is aligned with a signal conversion device, so that an annular loop is formed among the explosion device, the first electronic detonator and the signal conversion device;
s3: measuring the mass of the explosive to be blasted, wherein the explosive to be blasted is integral multiple of equivalent TNT of the electronic detonator and is accurate to 10-2g；
S4: one end of the second electronic detonator is connected with the detonating device and inserted into the explosive package to be detonated, and one end of the explosive package to be detonated is aligned to the signal conversion device, so that an annular loop is formed among the detonating device, the second electronic detonator, the explosive package to be detonated and the signal conversion device;
s5: the method comprises the steps that an explosion device is enabled to discharge, a first electronic detonator is ignited, shock waves generated by the first electronic detonator are transmitted to a signal conversion device through a receiving end, the signals convert the shock waves into electric signals, a P-t curve is displayed on a DSO, then a second electronic detonator inserted into a powder charge to be exploded is ignited, energy released by explosion of the electronic detonator causes the powder charge to be exploded, then the explosion shock waves generated by the first electronic detonator and the second electronic detonator are transmitted to the signal conversion device, and the signals convert the shock waves into the electric signals, and a new P-t curve is displayed on the DSO;
s6: respectively recording the P-t curves recorded for the first time and the second time as P1，P2；
S7: the shock wave energy and the bubble energy are calculated.
2. The method for testing work done by explosion of an electronic detonator according to claim 1, wherein the calculation formula of the shock wave energy is as follows:
P(t)＝Pm·e-t/θ
wherein Es-shock wave energy, kJ; pi-circumference ratio, R-horizontal distance from the center of the sensor sensitive element, m; rho w-density of water, Cw-sound velocity in water, theta-decay time, s; p (t) -the law of variation of the pressure of the shock wave in the water with time t, Pa.
3. The method for testing work done by explosion of an electronic detonator according to claim 1, wherein the calculation formula of the shock wave energy is as follows:
in the formula, Eb-bubble energy, kJ; t is tb-the computer recorded bubble pulse period, s; pH-the hydrostatic pressure of the water,Pa；ρwdensity of water, kg/m3。
4. The method for testing work done by explosion of electronic detonators according to claim 1, wherein the electronic detonators and the electronic detonators inserted into the explosive to be charged have the same distance from the sensitive element of the pressure sensor.
5. The method for testing work done by explosion of an electronic detonator according to claim 1, wherein the electronic detonator has the same type as the explosive charge to be exploded.
6. The method for testing the explosion work of the electronic detonator according to claim 1, wherein the mass of the explosive charge to be exploded is an integral multiple n of the equivalent TNT of the electronic detonator, and the value range of n is 10-20.
7. The application of the method for testing the explosion work of the electronic detonator according to the claims 1 to 6 in the experiment of the detonation performance of the electronic detonator.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923382A (en) * | 2022-07-01 | 2022-08-19 | 深圳寅辰科技有限公司 | Electronic detonator module test system |
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