Prediction of ground vibration intensity in mine blasting using the novel hybrid MARS–PSO–MLP model

2021 ◽  
Author(s):  
Hoang Nguyen ◽  
Xuan-Nam Bui ◽  
Quang-Hieu Tran ◽  
Hoa Anh Nguyen ◽  
Dinh-An Nguyen ◽  
...  
Keyword(s):  
Ground Vibration ◽  
The Novel ◽  
Vibration Intensity ◽  
Mlp Model

Prediction of Blast-Induced Ground Vibration Intensity in Open-Pit Mines Using Unmanned Aerial Vehicle and a Novel Intelligence System

2019 ◽  
Vol 29 (2) ◽  
pp. 771-790 ◽  
Author(s):  
Xuan-Nam Bui ◽  
Yosoon Choi ◽  
Victor Atrushkevich ◽  
Hoang Nguyen ◽  
Quang-Hieu Tran ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Ground Vibration ◽  
Open Pit ◽  
Open Pit Mines ◽  
Vibration Intensity ◽  
Intelligence System ◽  
Aerial Vehicle

scholarly journals The Influence of Train-Induced Ground Motion in Assessments of Dynamic Impact on Structures

2018 ◽  
Vol 64 (4) ◽  
pp. 49-63
Author(s):  
K. Nielepkowicz ◽  
A. Bąkowska ◽  
M. Maślakowski
Keyword(s):  
Ground Motion ◽  
Ground Vibration ◽  
Potential Effect ◽  
Dynamic Effects ◽  
Dynamic Impact ◽  
Engineering Structures ◽  
Vibration Intensity ◽  
The Impact ◽  
Oscillation Propagation

Abstract In this study, the issue of intensity of cargo train-induced soil vibrations is presented. Oscillations were measured in Warsaw-Rembertow location with application of set of seismic receivers. The analysis concerns the ground vibration differentiation issue, depending on considered direction of oscillation propagation plane. Statistic distribution of vibration intensity for directions in 3-D space were done. The issue of potential effect on engineering structures of recorded vibrations was raised. The impact based on Scale of Dynamic Effects standard was estimated in the article. Vibration intensity results were also compared with classification according to the Swiss Standard.

scholarly journals Measurement and Numerical Simulation of Ground and Subgrade Vibrations of Beijing Urban Rail Line 13

2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Futong Wang ◽  
Leilei Yan ◽  
Qi Jiang ◽  
Xiaxin Tao
Keyword(s):  
Numerical Simulation ◽  
Traffic Congestion ◽  
Ground Surface ◽  
Time History ◽  
Ground Vibration ◽  
Urban Rail Transit ◽  
Attenuation Relationship ◽  
Vibration Intensity ◽  
Urban Rail ◽  
Rail Line

Urban rail transit is an effective way to deal with the problem of traffic congestion in major cities. Trains travel through dense residential and commercial areas, providing convenient transportation while also result in vibration problems in the surrounding environment. Long-lasting vibrations result in disturbance to people’s sleep, malfunction of sensitive equipment, and even damage to heritage buildings. Compared with elevated and tunnel sections, ground surface urban railway generates vibrations and propagates to the surroundings via a more direct path in the form of surface waves, which makes the environmental problem more prominent. Due to the complexity of the train-track-ground system, the characteristics of the vibration propagation and attenuation are yet to be revealed. In this paper, we investigate the vibration of the ground and the subgrade next to the Beijing Urban Rail Line 13 by a field measurement combined with a mathematical model. The duration of ground vibration is divided into two parts: the train passing time and the Doppler effect-related tailing part. Through a regression analysis of the duration, the train passing time is identified and the train traveling speed is estimated. The attenuation relationship of ground vibration intensity is expressed by a piecewise function. In the subgrade, the vibration intensity of particle decays with increasing depth and the stress decay rate is faster than that of the acceleration. The dynamic wheel/rail interaction behaves stationary and periodic, and the magnitude fluctuates up and down with the quasi-static axle weight. The intensity attenuation relationship fitted in this paper provides a basis for designing new lines and renewing old lines and can be used as a reference for the development of vibration-reduction technology. The simulated time history of the wheel-rail force provides an excitation sample for further model experiments and numerical simulation. The proposed train speed identification method may be useful for parameter identification of moving sources such as ships, automobiles, and airplanes.

The novel steroidal glycoside from the dried bulb of Allium Macrostemon Bunge inhibits platelet activation

2010 ◽  
Vol 34 (8) ◽  
pp. S33-S33
Author(s):  
Wenchao Ou ◽  
Haifeng Chen ◽  
Yun Zhong ◽  
Benrong Liu ◽  
Keji Chen
Keyword(s):  
Platelet Activation ◽  
The Novel ◽  
Steroidal Glycoside ◽  
Allium Macrostemon
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