Calibration apparatus used for calibrating engineering seismograph time measuring precision and calibration method thereof
A technology for calibrating devices and seismographs, which is applied in the directions of geophysical measurement and instruments, and can solve the problems of not meeting the timing accuracy of calibrating engineering seismographs, and being difficult to meet engineering needs.
Active Publication Date: 2013-03-13
CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
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Problems solved by technology
Obviously, it is difficult to meet the engineering needs
Therefore, the standard method of the existing technology cannot meet the requirements of calibrating the timing accuracy of engineering seismographs.
Method used
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[0042] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0043] As shown in Figure 1, the calibration device for calibrating the timing accuracy of engineering seismographs of the present invention includes 6 geophone brackets 1, 1 seismic source bracket 2, and 6 geophones placed on 6 geophone brackets 1 4, be placed on the iron plate 8 that emits sound waves on the source support 2, the iron hammer 5, and the multi-core cable that makes 6 geophones 4 parallel connected, the iron hammer 5 and the multi-core cable 6 are connected on the seismograph 3 to be calibrated, The six geophones 4 placed on the six geophone brackets 1 and the iron plates 8 placed on the seismic source bracket 2 are located on a straight line at the same height and in the same direction, and the plane of the iron plates 6 is perpendicular to the arrangement direction of the geophones 4 .
[0044] As shown in Figure 2, the geophon...
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The invention discloses a calibration apparatus used for calibrating engineering seismograph time measuring precision and a calibration method thereof. The calibration apparatus comprises: a plurality of detector supports, a seismic source support, a plurality of detectors placed on the detector supports, an iron plate which can excite sound waves and is placed on the seismic source support, a hammer, a multi-core cable which can make a plurality of detectors form a parallel connection. The hammer and the multi-core cable are connected to a seismograph to be calibrated. The detectors placed on the detector supports and the iron plate placed on the seismic source support are positioned in a straight line with a same height and a same direction. A plane of the iron plate is vertical to an arranged direction of the detectors. By using the calibration apparatus of the invention, a sound wave excitation condition and a receiving condition can be ensured to be consistent so that calibrationof the engineering seismograph time measuring precision can be guaranteed.
Description
technical field [0001] The invention relates to a calibration device and a calibration method, in particular to a calibration device and a calibration method for calibrating the time measurement accuracy of an engineering seismograph. Background technique [0002] At present, the "Geophysical Prospecting Regulations for Water Conservancy and Hydropower Projects" SL326-2005, "Geophysical Prospecting Regulations for Hydropower and Water Conservancy Projects" DL / T5010-2005, "Code for Geophysical Exploration of Urban Engineering" CJJ7-2007 and "Technical Regulations for Geophysical Prospecting of Electric Power Engineering" DL / T5159—2002 and other corresponding regulations focus on the calibration of engineering seismic instruments to judge the consistency of each channel of the seismic instrument, and stipulate that the phase difference between the channels should be less than 1.5ms, and the amplitude difference between the channels should be less than 15%. Corresponding requi...
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IPC IPC(8): G01V13/00
Inventor 王清玉魏树满赵楠王孝起
Owner CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES