Through analyzing the blasting vibration test data,the fact could be found that the average vibrating velocity of down-role-hole MS blasting was reduced by 26.66%,compared with that of down-hole slice MS blasting,and reduced by 43.85%,compared with that of row-hole MS blasting. The down-role-hole MS blasting could have a dramatic vibration reduction function and hence could protect the adit effectively.
In this paper,blasting earthquake response spectrum and normalized response spectrum are computed by using the blasting vibration testing data of underwater rock test at Xianghongdian pumped storage power station.
On the basis of the analysis of the numberical results of the field vibration testing, the relationship between blasting features, geological conditions and vibration attenuation is discussed.
In this paper, blasting earthquake response spectrum and standardized response spectrum are computed according to the blasting vibration testing data of underwater rock test at the Xianghongdian Pumped Storage Power Station.
Because the crane beam of the underground workshop is at the wall where the Ⅲ layer is excavated. The aim of vibration control is to control the vibration velocity to be lower than 7 cm/s. Through meassuring the several groups of prartical vibration velocity and basing on the empirical formula V=K(3Q/R) α,K and α will be solved.
The results of vibration tests for 6 blasts show that the PPV after using the hole-by-hole initiating technique drops by 22%～78% as compared with original between-row short-delayed blasting technique.
The structural damage alarming method based on wavelet packet energy spectrum (WPES) for long-span cable-stayed bridges is presented through combination of ambient vibration test and wavelet packet analysis.
In order to validate the analytical approach, a forced vibration test is simulated and the response under vertical harmonic loads at the pile cap in the layered half plane is calculated.
The reduced velocity inducing a flexural vortex-shedding vibration is predicted using the result of the FFT analysis for the steady aerodynamic lift force time history and is in good agreement with the vibration test result.
Vibration analysis results from the FE model were again validated through experimental vibration testing with the gradient-coil insert installed in the MRI scanner and excited using swept sinusoidal time waveforms.
Vibration testing, however, resulted in several failures in the devices, and analysis showed that progressive failure initiated from large local displacements.
Indentifying changes in the vibrational signatures of a structure is a processing tool in structual monitoring. Neural networks can be used for this purpose. This paper investigates the feasibility of using analytically generated training samples to train neural networks. This networks, trained with analytically generated states of demage, were used to de agnose damage states obtained experimentally from a series of shakingtable tests of a five - story,teel fram. The resultsshow that this neural netwo...
On the basis of monitoring the single charge firing ground vibration of the bench blasting,we get its sample function,then we model the superposition of multiple delay blasting vibration under the analysis of taking the blasting source as series impulses,we find out the way of the linear superpositon of the vibration waves and the peak value of the blasting ground vibration.
Through detecting of building oscillation on ground caused by blasting in underground shaft,the paper analyses oscillation transmission characteristic of underground shaft blasting and puts forward reducing measures for building response caused by blasting oscillation,thus the harm of building caused by blasting oscillation can be reduced.
震动测试
vibration test
查询“震动测试”译词为用户自定义的双语例句
相关查询:
2008 CNKI－中国知网