Blasting vibration predicting method

Abstract

The invention provides a blasting vibration predicting method, which comprises the following steps of: firstly, determining a reference blasting hole and a plurality of vibration measuring points, and placing vibration meters on each vibration measuring point; blasting the reference blasting hole to obtain blasting vibration waveforms having different distance points; and finally, executing a blasting vibration waveform predicting process. In the prediction process, actual blasting vibration test data is obtained firstly, the blasting vibration waveforms and migration stacked delay time of each blast hole on a predicting target point are then calculated according to distance from the predicting target point to the each blast hole and the reference blasting hole, and the vibration waveform of the predicting target point can be obtained based on a vibration wave stacking principle. A blasting vibration predicting result which is obtained by adoption of the method really shows an influence of a topographic condition of a field on blasting vibration, and the integral vibration waveform of the predicting target point can be obtained; a predicted vibration velocity peak value of waveform particles is quite approximate to an actually-measured vibration velocity peak value, and a time difference between the predicted vibration velocity peak value and the actually-measured vibration velocity peak value is also quite small; and an analysis result is accurate and reliable, so that adjustment of a blasting scheme can be better guided.

Description

technical field [0001] The invention relates to the field of blasting vibration safety, in particular to a blasting vibration prediction method capable of predicting blasting vibration waveforms at target points before blasting. Background technique [0002] With the rapid development of my country's infrastructure and mining, blasting, as a necessary means of soil and rock excavation, faces an increasingly complex environment. How to adopt scientific and effective measures to ensure blasting safety to the greatest extent and minimize the impact of blasting vibration on The impact of the surrounding environment has become an urgent task for the smooth implementation of blasting construction and the construction of a harmonious society. Therefore, the evaluation and analysis of blasting vibration has become a problem that people pay more and more attention to. [0003] Currently, the Sadowski formula is usually used Predictive evaluation of blasting vibration effects. In t...

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Problems solved by technology

However, the above formula only provides a prediction method for the peak value V of particle vibration velocity, and cannot know the blasting vibration frequency and blasting duration, so the analysis and evaluation of blasting vibration using the above formula is not comprehensive enough

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