Results 31 to 40 of about 1,722 (253)

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Design and analysis of a three-dimensional seismic isolation device for small modular reactor building

Nuclear Engineering and Technology
Seismic isolation in nuclear power plant (NPP) buildings has been infrequently applied using a rubber-based horizontal seismic isolation system (SIS) without vertical isolation under a peak ground acceleration (PGA) of 0.3 g as the seismic design ...
Jae-Hong Kim, Jung-Dae Son, Yun-Ho Shin, Dae-Seung Cho   +3 more
doaj   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Demystifying the Barriers and Motivators for the Adoption of Base Isolation Systems in New Zealand

Buildings, 2022
A base isolator is a proven system that can significantly reduce any damage to a building in the event of an earthquake. Despite their efficacy, seismic isolators are not widely used in New Zealand, with only about forty systems in use during the 2010 ...
Temitope Egbelakin, Olabode Emmanuel Ogunmakinde, Temitope Omotayo, Adebayo Sojobi   +3 more
doaj   +1 more source

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, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

Semi-actively Implemented Non-linear Damping for Building Isolation Under Seismic Loadings

Frontiers in Built Environment, 2020
It is well-known that semi-active solution can achieve building isolation with much less energy requirements than active solutions. Also, it has been shown in previous studies that compared to linear damping, non-linear damping performs better for ...
Yun-Peng Zhu, Zi-Qiang Lang, Yosuke Kawanishi, Masayuki Kohiyama   +3 more
doaj   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

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, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Multi-Objective Optimization of Base-Isolated Tanks with Supplemental Linear Viscous Dampers

Infrastructures, 2022
Base isolation of liquid storage tanks has proven to be an efficient seismic protection measure, leading to a drastic reduction of a superstructure’s distress. However, many such tanks are located near seismic tectonic faults, which generate strong pulse-
Alexandros Tsipianitis, Yiannis Tsompanakis   +1 more
doaj   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

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, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Seismic resilience design of prefabricated modular pressurized buildings

Resilient Cities and Structures
The seismic intensity is generally high in the Qinghai-Tibet Plateau region of China. The seismic performance of the new prefabricated modular pressurized buildings used to solve the plateau response is insufficient.
Zhiwu Ye, Haifeng Bu, Zhimao Liu, Deng Lu, Dong Min, Hongbo Shan   +5 more
doaj   +1 more source