Directional Attenuation Relationship for Ground Vibrations Induced by Mine Tremors

2020 ◽  
Vol 56 (2) ◽  
pp. 236-245
Author(s):  
P. Bańka ◽  
E. Lier ◽  
M. M. Fernández ◽  
A. Chmieh ◽  
Z. F. Muñiz ◽  
...  
Keyword(s):  
Attenuation Relationship ◽  
Ground Vibrations ◽  
Mine Tremors

scholarly journals Predicting Dam Flood Discharge Induced Ground Vibration with Modified Frequency Response Function

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 144
Author(s):  
Yan Zhang ◽  
Jijian Lian ◽  
Songhui Li ◽  
Yanbing Zhao ◽  
Guoxin Zhang ◽  
...  
Keyword(s):  
Frequency Response ◽  
Frequency Distribution ◽  
Response Function ◽  
Frequency Response Function ◽  
Ground Vibration ◽  
Vibration Source ◽  
Ground Vibrations ◽  
High Energies ◽  
Flood Discharge ◽  
Opening Method

Ground vibrations induced by large flood discharge from a dam can damage surrounding buildings and impact the quality of life of local residents. If ground vibrations could be predicted during flood discharge, the ground vibration intensity could be mitigated by controlling or tuning the discharge conditions by, for example, changing the flow rate, changing the opening method of the orifice, and changing the upstream or downstream water level, thereby effectively preventing damage. This study proposes a prediction method with a modified frequency response function (FRF) and applies it to the in situ measured data of Xiangjiaba Dam. A multiple averaged power spectrum FRF (MP-FRF) is derived by analyzing four major factors when the FRF is used: noise, system nonlinearity, spectral leakages, and signal latency. The effects of the two types of vibration source as input are quantified. The impact of noise on the predicted amplitude is corrected based on the characteristics of the measured signal. The proposed method involves four steps: signal denoising, MP-FRF estimation, vibration prediction, and noise correction. The results show that when the vibration source and ground vibrations are broadband signals and two or more bands with relative high energies, the frequency distribution of ground vibration can be predicted with MP-FRF by filtering both the input and output. The amplitude prediction loss caused by filtering can be corrected by adding a constructed white noise signal to the prediction result. Compared with using the signal at multiple vibration sources after superimposed as input, using the main source as input improves the accuracy of the predicted frequency distribution. The proposed method can predict the dominant frequency and the frequency bands with relative high energies of the ground vibration downstream of Xiangjiaba Dam. The predicted amplitude error is 9.26%.

scholarly journals DYNAMIC LOADS OF TRAFFIC-INDUCED GROUND VIBRATIONS ON ROAD

2008 ◽  
Vol 73 (633) ◽  
pp. 1241-1247 ◽  
Author(s):  
Norio TAGUCHI ◽  
Toshikazu HANAZATO ◽  
Yoshio IKEDA ◽  
Riei ISHIDA
Keyword(s):  
Dynamic Loads ◽  
Ground Vibrations

scholarly journals Autocorrelation of the ground vibrations recorded by the SEIS-InSight seismometer on Mars

2020 ◽  
Author(s):  
Nicolas Compaire ◽  
Ludovic Margerin ◽  
Raphaël F. Garcia ◽  
Baptiste Pinot ◽  
Marie Calvet ◽  
...  
Keyword(s):  
Ground Vibrations

scholarly journals Prediction of Blast-Induced Ground Vibration Using an Adaptive Network-Based Fuzzy Inference System

2020 ◽  
Vol 11 (1) ◽  
pp. 203
Author(s):  
Primož Jelušič ◽  
Andrej Ivanič ◽  
Samo Lubej
Keyword(s):  
Fuzzy Inference System ◽  
Goodness Of Fit ◽  
Mean Squared Error ◽  
Fuzzy Inference ◽  
Ground Vibration ◽  
Residential Building ◽  
Ground Vibrations ◽  
Adaptive Network ◽  
Inference System ◽  
Fast Learning

Efforts were made to predict and evaluate blast-induced ground vibrations and frequencies using an adaptive network-based fuzzy inference system (ANFIS), which has a fast-learning capability and the ability to capture the non-linear response during the blasting process. For this purpose, the ground vibrations generated by the blast in a tunnel tube were monitored at a residential building located directly above the tunnel tube. To investigate the usefulness of this approach, the prediction by the ANFIS was also compared to those by three of the most commonly used vibration predictors. The efficiency criteria chosen for the comparison between the predicted and actual data were the sum of squares due to error (SSE), the root mean squared error (RMSE), and the goodness of fit (R-squared and adjusted R-squared). The results show that the ANFIS prediction model performs better than the commonly used predictors.

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