A Method of Converting Explosion Vibration Acceleration into Velocity

A blasting vibration and acceleration technology, used in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as difficult to achieve effective conversion, and achieve the effect of being conducive to popularization, overcoming drift, and ideal similarity

Active Publication Date: 2014-10-15
ENG COLLEGE OF ENG CORPS PLA UNIV OF SCI & TECH
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  • Description
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Problems solved by technology

Effective conversion between measured velocity and acceleration has so far been difficult

Method used

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  • A Method of Converting Explosion Vibration Acceleration into Velocity
  • A Method of Converting Explosion Vibration Acceleration into Velocity
  • A Method of Converting Explosion Vibration Acceleration into Velocity

Examples

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] like Figure 1 to Figure 5 As shown, first input a measured acceleration sequence into the computer, the sequence is: X(t), and then convert the acceleration into velocity according to the following steps.

[0042] (1) if figure 1 As shown, empirical mode decomposition is performed on the measured acceleration data sequence, and adaptively decomposed into six intrinsic mode function IMF1-IMF6 components and a trend item according to the data sequence

[0043] X ( t ) = Σ i = 1 6 c i ( t ) + r 6 ( t )

[0044] Where: X(t) is...

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Abstract

The invention discloses a method for converting blasting-vibration acceleration into velocity, which comprises the following steps: firstly, carrying out empirical mode decomposition, low-frequency processing and high-frequency threshold noise reduction processing on an acceleration data sequence; then, obtaining a velocity data sequence through time-domain integration; and finally, respectively carrying out piecewise least-squares correction on components having the drift phenomenon so as to obtain a high-precision velocity data sequence. By using the method for converting blasting-vibration acceleration into velocity disclosed by the invention, the problem of drifting can be effectively solved, and the similarity between a velocity waveform obtained by using the method and an actually-measured velocity waveform is more ideal, therefore, the method can guide the blasting construction better, and is beneficial for popularization.

Description

technical field [0001] The invention relates to a method for converting blasting vibration acceleration and velocity, in particular to a method for converting blasting vibration acceleration into velocity. Background technique [0002] At present, engineering blasting technology is widely used in national defense projects and civil engineering. When blasting operations are carried out around important structures such as slopes, dams, cultural relics, and nuclear power facilities, it is necessary to follow the blasting vibration (acceleration) speed given in the design. Control standards carry out blasting vibration monitoring on protected objects, and serve as design feedback and guidance for blasting construction. [0003] As for the physical quantity of blasting vibration, one view is that it is better to monitor with velocity as the standard, and link the seismic wave energy with the stress acting on the structure; another view is that it is better to monitor with acceler...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 高振儒方向张卫平陆凡东郭涛刘强龙源范磊李栋
Owner ENG COLLEGE OF ENG CORPS PLA UNIV OF SCI & TECH
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