Results 51 to 60 of about 17,530 (271)
MathematicsSpalling is a widespread dynamic disaster during blasting excavation in underground engineering. To clarify the coupled dynamic response and spalling behavior of an underground tunnel with a spray anchor, an investigation based on the rock–shotcrete ...
Lin Luo +5 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
Analysis of Rebound Rate of Wet Shotcrete Based on Experiment and Discrete Element Method
Shock and Vibration, 2022 Wet shotcrete support is the main support method for underground engineering construction at present. The rebound rate is one of the indicators to evaluate the support effect, and a lower rebound rate will improve the construction effect of wet shotcrete.
Chang Su, Zhuang Wu, Xiaokui Zheng
doaj +1 more source
The Sanford Underground Research Facility at Homestake
, 2014 The former Homestake gold mine in Lead, South Dakota is being transformed into a dedicated laboratory to pursue underground research in rare-process physics, as well as offering research opportunities in other disciplines such as biology, geology and ...
Heise, J.
core +2 more sources
Deep Underground Science and Engineering, EarlyView.This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley +1 more source
On the Design of Permanent Rock Support Using Fibre-Reinforced Shotcrete
Fibers, 2023 Fibre-reinforced shotcrete (sprayed concrete) is one of the major components in the support system for tunnels in hard rock. Several empirical design methodologies have been developed over the years due to the complexity and many uncertainties involved ...
A. Sjölander, A. Ansell, E. Nordström
semanticscholar +1 more source
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
Performance monitoring and analysis of a yield-control support system in squeezing rock [PDF]
, 2010 ISBN 978-0-415-58654-
Barla, Giovanni Battista +2 more
core
Insight - Civil EngineeringThis paper investigates the fracture mechanism and ductility performance of fiber-reinforced shotcrete (FRS) under flexural loading through digital image correlation (DIC) analysis.
Tohid Asheghi Mehmandari +3 more
semanticscholar +1 more source
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023 Rock–shotcrete structures are often suffered from dynamic shearing. However, the understanding of the dynamic shear response of rock–shotcrete structures is still at its infancy.
Weiyue Bao +5 more
semanticscholar +1 more source