Results 41 to 50 of about 243,456 (174)
Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures
Deep Underground Science and Engineering, EarlyView.This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao +3 more
wiley +1 more source
The Computerized Design Program for Tunnel Blasting [PDF]
, 2005 In this study, a computer program to design tunnel blasting pattern has been developed. The program consists of two parts; one is for tunnel blasting pattern design and the other is for blasting modeling to estimate the peak particle velocity, the ...
Seokwon Jeon +4 more
core
Deep Underground Science and Engineering, EarlyView.Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang +5 more
wiley +1 more source
河南理工大学学报. 自然科学版ObjectivesTo analyze the stability of surrounding rock during tunnel blasting excavation in horizontally layered rock masses under initial in-situ stress.MethodsUsing LS-DYNA finite element software， numerical models were established under three ...
Yu Jianxin +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
BuildingsBlasting is a widely employed technique for tunnel construction in mountainous regions; however, it often causes damage to the surrounding rock mass, particularly in fault fracture zones, which can lead to hazards such as rockfalls and collapses.
Lizhi Cheng +3 more
doaj +1 more source
Multifractal Characteristics of Smooth Blasting Overbreak in Extra-Long Hard Rock Tunnel
Fractal and Fractional, 2023 With the development of infrastructure construction in mountainous areas, the number of new extra-long tunnels is increasing. However, these tunnels often face the challenge of complex and variable surrounding rock grades, resulting in a large number of ...
Wanmao Zhang +4 more
doaj +1 more source
Study on Blasting Vibration Effects of Shallow Tunnel Excavation
, 2011 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.
Wen Xue Gao +3 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu +6 more
wiley +1 more source
Velocity of tunnel blasting using non-electric detonators (Part I blasting).
, 2019 Velocity of tunnel blasting using non-electric detonators (Part I blasting).
Xiaoming Guan (4899304) +3 more
core +1 more source