典型文献
Discussion on blasting vibration monitoring for rock damage control in rock slope excavation
文献摘要：
Drill and blast is a commonly used method for rock slope excavation in hydropower engineering. During blasting excavation of rock slopes, far-field vibration monitoring on the first upper berm for statutory compliance is usually performed to control the blast-induced rock damage to the final slope face. In this study, for the rock slope excavation in the Jinping-I hydropower station, the field vibration monitoring and acoustic testing are presented to investigate the vibration characteristics on the first upper berm and the damage depth in the current bench. The relationship between the PPV on the first upper berm and the PPV damage threshold on the damage zone boundary is also studied through three-dimensional FEM simulations. The results show that on the first upper berm, the maximum vibration velocity component occurs in the vertical direction. While on the blasting damage zone boundary, the horizontal radial vibration velocity is the maximum component. For the Jinping-I slope with a bench height of 30 m, the radial PPV on the inner side of the first upper berm is 2.06％ of the PPV threshold on the damage zone boundary. This ratio is increased as the bench height decreases. Therefore, the bench height of the rock slope is an important factor that cannot be ignored in determining the allowable vibration velocity for rock damage control.
文献关键词：
中图分类号：
作者姓名：
Yang Jianhua;Cai Jiyong;Yao Chi;Zhang Xiaobo;Liu Liansheng
作者机构：
School of Civil Engineering and Architecture,Nanchang University,Nanchang 30031,China;School of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China
文献出处：
引用格式：
[1]Yang Jianhua;Cai Jiyong;Yao Chi;Zhang Xiaobo;Liu Liansheng-.Discussion on blasting vibration monitoring for rock damage control in rock slope excavation)[J].地震工程与工程振动（英文版）,2022(01):53-65
A类：
berm,statutory
B类：
Discussion,blasting,vibration,monitoring,rock,damage,control,excavation,Drill,commonly,used,method,hydropower,engineering,During,slopes,far,field,first,upper,compliance,usually,performed,induced,final,face,In,this,study,Jinping,station,acoustic,testing,are,presented,investigate,characteristics,depth,current,bench,relationship,between,PPV,threshold,zone,boundary,also,studied,through,three,dimensional,FEM,simulations,results,show,that,maximum,velocity,component,occurs,vertical,direction,While,horizontal,radial,For,height,inner,side,This,increased,decreases,Therefore,important,cannot,ignored,determining,allowable
AB值：
0.381878
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