Electronic detonator delay precision test method based on underwater shock wave actually measured waveform
An electronic detonator and accuracy testing technology, which is applied in the direction of weapon accessories, fuzes, offensive equipment, etc., can solve the problems of detonator delay accuracy measurement error, test method interference, etc., and achieve low cost, high test efficiency and simple test effect
Inactive Publication Date: 2021-06-11
ZHENGZHOU UNIV
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Problems solved by technology
[0005] In order to solve the problems that there are large errors in the measurement of the delay accuracy of the existing detonators and the large interference in the test method, the present invention provides a test method for the delay accuracy of the electronic detonator based on the measured waveform of the underwater shock wave, which can be used in blasting engineering Measure the accuracy of the detonator at any time
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[0034] A method for testing the delay accuracy of an electronic detonator based on the measured waveform of an underwater shock wave, comprising the following steps:
[0035] (1) Select a safe open water area to arrange a group of electronic detonators. A group of electronic detonators contains one or more electronic detonators. The electronic detonators in the group have a unique number. According to the number, the group of electronic detonators is evenly fixed on the water surface and underwater On a plane circumference between them, the water shock wave propagation routes excited by multiple electronic detonators do not cross and overlap each other, wherein the first electronic detonator connected to the detonator is a nominal delay detonator;
[0036] (2) Arrange one or more water shock wave sensors at different heights in the water along the vertical direction of the center of the circle. Shock wave tester connection within safe range on shore to record waveform data;
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The invention relates to an electronic detonator delay precision test method based on an underwater shock wave actually measured waveform, different sections of electronic detonators are arranged on the same circumference in an open water area, a plurality of underwater shock wave sensors are arranged at different heights of the circle center, all the electronic detonators are detonated at the same time, after detonation, a water hammer wave pressure curve generated by explosion of each electronic detonator is obtained through a water hammer wave sensor, analyzing is carried out on the actually measured waveform by utilizing a wavelet analysis method suitable for non-stationary signal analysis, a time-energy density curve of the waveform is obtained to obtain the accurate arrival time of each section of water hammer wave, the time required for propagation of the water hammer wave in water is removed to obtain the accurate delay time of the electronic detonators, and comparing is carried out on the actually obtained delay time of the electronic detonators and the designed delay time of the electronic detonators to determine the delay precision of the electronic detonators.
Description
technical field [0001] The invention belongs to the technical field of blasting, and in particular relates to a method for testing the delay accuracy of electronic detonators based on the measured waveform of underwater shock waves, which can measure the delay time of electronic detonators in batches, and is suitable for electronic detonators during engineering blasting and excavation in fields such as hydropower and transportation. accuracy measurement. Background technique [0002] With the continuous development of my country's economic construction, in the engineering blasting projects involved in mining, water conservancy and hydropower, civil engineering, railway, transportation and other fields, the requirements for engineering blasting control are getting higher and higher. With the rapid development of blasting equipment and construction technology, blasting technology and blasting vibration control measures have made great progress, micro-differential blasting tech...
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Login to View More IPC IPC(8): F42C21/00F42C19/12
CPCF42C19/12F42C21/00
Inventor 赵小华赵浩楠方宏远杜雪明薛冰寒余翔
Owner ZHENGZHOU UNIV