NDLI: Influence law of multipoint vibration load on slope stability in Xiaolongtan open pit mine in Yunnan, China

Content Provider	Springer Nature Link
Author	Han, Liu Shu, Ji sen Hanif, N. R. Xi, Wen jia Li, Xin Jing, Hong wen Ma, Li
Copyright Year	2015
Abstract	The purpose of this work was to explore the influence law of vibration load on rock mass structure and slope stability. Based on the type and transmission way of vibration stress wave, the main stress in the horizontal and vertical directions was analyzed and the superposition effect of the stress wave was revealed. After the mechanical analysis of the sliding mass, the calculation formulas of the anti-sliding force and the sliding force were derived and the damage mechanism of blasting vibration to the structural plane was defined. In addition, according to the structure and lithologic parameter of the slope as well as the vibration monitoring data, the west slope stability of Xiaolongtan open pit mine was analyzed. The results show that the time-dependent stability factor is proportional to the vibration speed and the peak values appear at the same time. Vibration load promotes the breakage of the structural plane leading to the drop of the west slope stability factor by 0.23%. Under the multipoint simultaneous blasting, the fluctuating laws of the stability factors are consistent. The more the start-up points are, the higher the weakening degree to the slope stability is. Under the multipoint allochronic blasting, the stability factor depends on the synthetic waveform structure of all vibration waves. The greater the blasting time difference is, the lower the weakening degree to the slope stability is. Selecting the reasonable quantity of start-up points and time difference could fully reduce the adverse influence of vibration load to slope stability.
Starting Page	4819
Ending Page	4827
Page Count	9
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	22
Issue Number	12
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2015-12-16
Publisher Place	Changsha
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	multipoint blasting vibration load stability timeliness Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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