Discussion on blasting vibration monitoring for rock damage control in rock slope excavation

2021 ◽  
Author(s):  
Yang Jianhua ◽  
Cai Jiyong ◽  
Yao Chi ◽  
Zhang Xiaobo ◽  
Liu Liansheng
Keyword(s):  
Rock Slope ◽  
Damage Control ◽  
Vibration Monitoring ◽  
Blasting Vibration ◽  
Rock Damage ◽  
Slope Excavation

Influences of Tunnel Excavation Blasting Vibration on Surface High-Rise Building

2010 ◽  
Vol 163-167 ◽  
pp. 2613-2617
Author(s):  
Hai Liang Wang ◽  
Tong Wei Gao
Keyword(s):  
Vibration Frequency ◽  
Vertical Vibration ◽  
Frame Structure ◽  
Vibration Monitoring ◽  
Vibration Velocity ◽  
Blasting Vibration ◽  
Road Tunnel ◽  
Concrete Frame ◽  
High Rise ◽  
Order Of Magnitude

According to the 33 floors high building, blasting vibration monitoring had been carried on. The building, along Yunnan road tunnel of Qingdao Cross-harbor Tunnel Guide Line Project, has concrete frame structure. Monitoring data had been analyzed. Results showed that rules of vertical vibration velocity and main vibration frequency have similar relevance. Amplification effect of them was existed on the middle and top of the building. From the 2nd floor of downward ground to ground, the value of them suddenly decreased. Main vibration frequency is in the range of 101~102 order of magnitude.

scholarly journals Blast-induced rock damage control in Fangchenggang nuclear power station, China

2018 ◽  
Vol 10 (5) ◽  
pp. 914-923 ◽  
Author(s):  
Yongqing Zeng ◽  
Haibo Li ◽  
Xiang Xia ◽  
Bo Liu ◽  
Hong Zuo ◽  
...  
Keyword(s):  
Nuclear Power Station ◽  
Nuclear Power ◽  
Damage Control ◽  
Rock Damage ◽  
Power Station

Numerical and experimental investigation of blasting damage control of a high rock slope in a deep valley

2018 ◽  
Vol 237 ◽  
pp. 12-20 ◽  
Author(s):  
Yingguo Hu ◽  
Wenbo Lu ◽  
Xinxia Wu ◽  
Meishan Liu ◽  
Peng Li
Keyword(s):  
Experimental Investigation ◽  
Rock Slope ◽  
Damage Control ◽  
High Rock Slope

Safety Control of Blasting Construction in New Austrian Metro Tunnel

2012 ◽  
Vol 446-449 ◽  
pp. 2462-2465 ◽  
Author(s):  
Hong De Wang ◽  
Xiu Feng Shen
Keyword(s):  
Regression Analysis ◽  
Vibration Monitoring ◽  
Actual Condition ◽  
Vibration Velocity ◽  
Charge Weight ◽  
Blasting Vibration ◽  
Safety Control ◽  
Blasting Excavation ◽  
Tunnel Blasting ◽  
Metro Tunnel

Abstract. Through the analysis and research on the vibration effect caused by the urban New Austrian (shallow embedded) metro tunnel blasting construction, the main harming effect of the blasting vibration on the surface buildings is summarized. According to the actual condition on the site of blasting construction in No.2 line of Dalian metro tunnel, the reasonable vibration monitoring plan for blasting vibration wave is established. At the same time, by means of the regression analysis about the monitoring results of blasting vibration, the vibration wave’s regression formula are set up, which can expression the correlation among the vibration velocity, the charge weight, the distance between the blasting fountains and the buildings. The results show that the Sadaovsk formula can be use to describe the effect of the metro tunnel blasting construction on the surface buildings accurately and reasonably in this construction segment. This kind of regression analysis method can be use to direct subsequent blasting excavation.

Study on Blasting Seismic Effect of Tunnel in Fault Formation

2012 ◽  
Vol 446-449 ◽  
pp. 2336-2339
Author(s):  
Fu Qiang Gao
Keyword(s):  
Stress Wave ◽  
Seismic Wave ◽  
Damage Control ◽  
Field Tests ◽  
Seismic Effect ◽  
Monitoring Data ◽  
Blasting Vibration ◽  
Propagation Characteristics ◽  
Rock Tunnel ◽  
Vibration Damage

Based on the propagation characteristics of stress wave in crack rock, the propagation laws of seismic wave in fault formation were studied, and the field tests were carried out on Guanjiao tunnel of Qinghai-Tibet railway. The monitoring data of blasting vibration indicate that cracks prevent the propagation of seismic wave and the peak velocities of seismic wave attenuate rapidly in fault formation. The findings provide a reference on blasting vibration damage control in rock tunnel.

Vibration Monitoring and Safety Evaluation of Blasting at an Underground Engineering

2011 ◽  
Vol 243-249 ◽  
pp. 5440-5443 ◽  
Author(s):  
Zhi Zheng Yin
Keyword(s):  
Explosive Charge ◽  
Safety Evaluation ◽  
Vertical Direction ◽  
Tangential Direction ◽  
Vibration Monitoring ◽  
Vibration Velocity ◽  
Blasting Vibration ◽  
Underground Engineering ◽  
Highway Tunnel ◽  
Secondary Lining

In this paper, the blast vibration was monitored and the data from an underground engineering were analyzed. The empirical formula of the relation between the maximum vertical direction vibration velocity and the scaled explosive charge, the maximum horizontal radius direction vibration velocity and the scaled explosive charge, the maximum horizontal tangential direction vibration velocity and the scaled explosive charge were determined. According to the blasting safety regulations, the safety standard of the blasting vibration velocity is less than 7.0 cm/s. Through monitoring and inspection, the safety evaluation of the secondary lining of the highway tunnel was made. The safety evaluation of the protected highway tunnel is safety under the blasting vibration.

Study on Creep and Fracturing of High Antidip Sandwich Rock Slope in High In Situ Stress

2013 ◽  
Vol 405-408 ◽  
pp. 527-534
Author(s):  
Qi Wu ◽  
Xu Biao Deng
Keyword(s):  
Rock Slope ◽  
Stereographic Projection ◽  
Friction Angle ◽  
Depression Angle ◽  
In Situ Stresses ◽  
Slope Excavation ◽  
Before And After ◽  
Projection Analysis ◽  
Intersection Line

The paper set an example of high antidip sandwich rock slope to study its creep and fracturing deformation in high in-situ stresses at Jinping First Stage Hydropower Station in China. The slope creep deformation before and after excavation could be found on slope face and in exploration adits. Displacements at 4 monitoring points on the slope were abnormal for influences of fault f42-9, zone SL44-1 and lamprophyre dike, which indicate creep and fracturing of the big block separated by them. Through stereographic projection analysis, intersection of controlling structural planes of the big block direct outside the slope. Its bottom slide face, fault f42-9, has internal friction angle smaller than depression angle of the intersection line. Barricade in front of the big block removed by slope excavation decreased resistance to slope slide. It is concluded that creep and fracturing deformation of the big block is controlling stability of the slope.

scholarly journals Liquid CO2 Phase Change Fracturing and Vibration Monitoring in Roadbed Slope Excavation

2021 ◽  
Vol 1972 (1) ◽  
pp. 012116
Author(s):  
Yuan Hailiang ◽  
Chen Chen ◽  
Yu Jianxin ◽  
Liu Xiaoyi ◽  
Dong Bin
Keyword(s):  
Phase Change ◽  
Vibration Monitoring ◽  
Liquid Co2 ◽  
Slope Excavation
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