Stability analysis and blasting vibration control technology of shallow tunnel under unsymmetrical pressure

2013 ◽  
pp. 895-898
Author(s):  
Dong Liu ◽  
Wenxue Gao ◽  
Wenxu Zhou ◽  
Yuanbo Zhang
Keyword(s):  
Stability Analysis ◽  
Vibration Control ◽  
Blasting Vibration ◽  
Shallow Tunnel ◽  
Control Technology

Study on Blasting Vibration Effects of Shallow Tunnel Excavation

2011 ◽  
Vol 250-253 ◽  
pp. 2366-2370 ◽  
Author(s):  
Wen Xue Gao ◽  
Wen Long Sun ◽  
Hong Liang Deng ◽  
Xi Meng Sun
Keyword(s):  
Vibration Control ◽  
Ground Surface ◽  
Rock Fragmentation ◽  
Blasting Vibration ◽  
Shallow Tunnel ◽  
Tunnel Excavation ◽  
Surface Vibration ◽  
Multi Stage ◽  
Tunnel Blasting

Based on the practice of Huolang-yu tunnel of Mixing road reconstruction, this paper studies the monitoring of ground surface vibration and the technology of controlled blasting. The results show: (1) the ground surface vibration declines from constructed position to non-excavated areas along tunnel excavation direction. (2) The vibration control of wedge cutting holes blasting is the key to reduce or eliminate shallow tunnel vibrating calamity. And the replacement of the multi-stage small wedge cutting holes to the big wedge cutting holes ameliorates blasting vibration and rock fragmentation. (3) The overall monitoring of shallow tunnel blasting vibration and the effects, and optimum of the blasting design not only reduce blasting vibration but also ensure large circulation footage.

Study on Blasting Vibration Control Technology in Coastal Oil Depot Area

2019 ◽  
Vol 94 (sp1) ◽  
pp. 285
Author(s):  
Leibin Li ◽  
Jianhua Zhang ◽  
Dongwang Zhong
Keyword(s):  
Vibration Control ◽  
Blasting Vibration ◽  
Control Technology

The Bionic Vibration Damping Technology and its Inspiration for the High Speed Milling Cutter

2012 ◽  
Vol 226-228 ◽  
pp. 98-101
Author(s):  
Hong Qing Lv ◽  
Wei Xiao Tang ◽  
Qing Hua Song ◽  
Shan Shan Sun
Keyword(s):  
Vibration Control ◽  
High Speed ◽  
Vibration Damping ◽  
Control Technology ◽  
Ambient Vibrations ◽  
Milling Cutter ◽  
High Speed Milling ◽  
Important Concept ◽  
Good Ability ◽  
Mechanical Models

A review of research on the vibration control technology inspiration from the biological vibration damping mechanisms is described. First the important concept and background of the bionic vibration damping technology are briefly introduced. Then the basic theories and its applications in the engineering fields are elaborated from three aspects: vibration damping mechanisms of the creatures own the good ability to withstand the ambient vibrations, mechanical models of biological prototypes and its application progress in the practical occasions.

scholarly journals Active Vibration Control Technology for Elevator Cars Considering Controllability

2013 ◽  
Vol 79 (805) ◽  
pp. 3192-3205 ◽  
Author(s):  
Naoaki NOGUCHI ◽  
Atsushi ARAKAWA ◽  
Kan MIYOSHI ◽  
Yosuke KAWAMURA ◽  
Takuya YOSHIMURA
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Control Technology ◽  
Active Vibration

scholarly journals Present Status and Prospect of High-Frequency Electro-hydraulic Vibration Control Technology

2019 ◽  
Vol 32 (1) ◽  
Author(s):  
Yi Liu ◽  
Tao Wang ◽  
Guofang Gong ◽  
Rujun Gao
Keyword(s):  
Vibration Control ◽  
High Frequency ◽  
Seismic Waves ◽  
Stability Control ◽  
Control Technology ◽  
Rotary Valve ◽  
High Frequency Vibration ◽  
Vibration Method ◽  
Waveform Distortion ◽  
Control Stability

AbstractElectro-hydraulic vibration equipment (EHVE) is widely used in vibration environment simulation tests, such as vehicles, weapons, ships, aerospace, nuclear industries and seismic waves replication, etc., due to its large output power, displacement and thrust, as well as good workload adaptation and multi-controllable parameters. Based on the domestic and overseas development of high-frequency EHVE, dividing them into servo-valve controlled vibration equipment and rotary-valve controlled vibration equipment. The research status and progress of high-frequency electro-hydraulic vibration control technology (EHVCT) are discussed, from the perspective of vibration waveform control and vibration controller. The problems of current electro-hydraulic vibration system bandwidth and waveform distortion control, stability control, offset control and complex vibration waveform generation in high-frequency vibration conditions are pointed out. Combining the existing rotary-valve controlled high-frequency electro-hydraulic vibration method, a new twin-valve independently controlled high-frequency electro-hydraulic vibration method is proposed to break through the limitations of current electro-hydraulic vibration technology in terms of system frequency bandwidth and waveform distortion. The new method can realize independent adjustment and control of vibration waveform frequency, amplitude and offset under high-frequency vibration conditions, and provide a new idea for accurate simulation of high-frequency vibration waveform.

scholarly journals A limit equilibrium model for the reinforced face stability analysis of a shallow tunnel in cohesive-frictional soils

2020 ◽  
Vol 105 ◽  
pp. 103562
Author(s):  
Xiao Zhang ◽  
Mingnian Wang ◽  
Zhilong Wang ◽  
Jiawang Li ◽  
Jianjun Tong ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Equilibrium Model ◽  
Limit Equilibrium ◽  
Shallow Tunnel ◽  
Face Stability ◽  
Frictional Soils
Sign in / Sign up

Export Citation Format

Share Document