Results 21 to 30 of about 243,456 (174)

Dynamic response characteristics of the initial support structure of the double-track tunnel blasting

Shenzhen Daxue xuebao. Ligong ban
In the process of blasting excavation of the later excavated tunnel, it is crucial to ensure the safety of blasting vibration in the first excavated tunnel.
HUANG Chuansheng, YANG Xin, LIN Jihua, XU Hao, HU Deyu, REN Kaifu   +5 more
doaj   +2 more sources

Characteristics of vibration waves measured in concrete lining of excavated tunnel during blasting in adjacent tunnel [PDF]

, 2022
The effect of a blasting vibration from an excavating tunnel on an adjacent excavated tunnel is of great importance for the stability and security of twin tunnels.
Yang, J. (Junsheng), Wu, C. (Congshi), Zhang, Z. (Zongxian), Wang, Z. (Zhenyu), Zhang, Q. (Qingbin)   +4 more
core   +2 more sources

Optimization analysis of time frequency spectrum enhancement of tunnel blasting vibration signal

矿业科学学报, 2023
Aiming at the problem of insufficient time-frequency resolution of tunnel blasting vibration signal, a time-frequency image enhancement algorithm based on convolutional neural network is applied, through the time-frequency image enhancement of the ...
Fu Xiaoqiang, Ma Yan, Yu Jin, Dai Liangyu, Huang Lingjun   +4 more
doaj   +1 more source

Blasting-Induced Vibration Response of the Transition Section in a Branching-Out Tunnel and Vibration Control Measures

Advances in Civil Engineering, 2020
Blasting-induced vibration during the excavation of transition section in a branching-out tunnel causes damage and hence affects the safety and stability of the supporting structure and surrounding rock.
Feng Cao, Sheng Zhang, Tonghua Ling
doaj   +1 more source

Mechanism and Application of Blasting Technology Using Phase-Difference Vibration Mitigation on Adjacent Railway Tunnel

Shock and Vibration, 2022
The blasting vibration velocity is a widely used controlling index for the safety assessment of tunnel structures. How to reduce the impact of blasting vibration on the operation of adjacent railway tunnels is worth studying.
Bin Zhang, Yuanfu Zhou, Xuefu Zhang, Zhaoyuan Zhang, Zijian Wang, Yi Wu   +5 more
doaj   +1 more source

Influence of the Tunnel Shape on Shotcrete Lining Stresses [PDF]

, 2011
Tunnel excavation is frequently carried out in rock masses by the drill and blast method and the final shape of the tunnel boundary can be irregular due to overbreaks.
Fabrizio Barpi, Daniele Peila, Barpi, Fabrizio, Peila, Daniele   +3 more
core   +1 more source

Vibration velocity and frequency characteristics of surrounding rock of adjacent tunnel under blasting excavation

Scientific Reports, 2022
The aim of this study is to improve the accuracy of response prediction and safety evaluation of blasting vibration of a deeply-buried tunnel group. For this purpose, the expression of frequency-domain and blasting vibration velocity spectra for the ...
Yi Luo, Hangli Gong, Dengxing Qu, Xueping Zhang, Yuhang Tao, Xinping Li   +5 more
doaj   +1 more source

Analysis of Cumulative Damage for Shared Rock in a Neighborhood Tunnel under Cyclic Blasting Loading Using the Ultrasonic Test

Shock and Vibration, 2020
In blasting excavation of neighborhood tunnels, damage accumulation process in surrounding rock is inevitable. To explore the influence of damage accumulation of rock mass under multiple blasting loads, we analyzed the vibration damage accumulation ...
Feng Cao, Sheng Zhang, Tonghua Ling
doaj   +1 more source

Study on the Influence of the Blasting of Preceding Tunnel on the Pre-Penetration Surrounding Rock in Succeeding Tunnel with Small Clear Distance

Shock and Vibration, 2022
To study the influence of the preceding tunnel blasting on the surrounding rock in the pre-penetration area of the succeeding tunnel, combined with the actual monitoring of the Kaifeng Mountain small clear distance tunnel, the relationship between the ...
Xiankai Bao, Wu Zhang, Shuang Zhao, Chaoyun Yu, Yongjun Lü, Shurui Wang, Ning Wu   +6 more
doaj   +1 more source

Application of Energy-Concentrated Hydraulic Blasting Technology in Tunnel Construction in China

Shock and Vibration, 2022
The construction of traffic network brings opportunities to the development of tunnel construction technology. At present, the construction of rock tunnels is still dominated by drilling and blasting.
Feng Han, Jigang Li, Yuancheng Cai, Qiang Wang, Junling Qiu   +4 more
doaj   +1 more source