Results 91 to 100 of about 42,703 (308)

Creep behaviour of sandstone under different water conditions and its response to varying impact energy

Geomatics, Natural Hazards & Risk
Creep deformation and failure of immersed sandstone under mining disturbances are critical factors driving water inrush and goaf collapse. This study employed a specialized creep-impact testing system capable of simultaneous water immersion and ...
Honglei Liu, Jianhua Zhou, Jinduo Li, Wenxue Deng, Leilei Niu, Tianhong Yang, Shixian Zhang   +6 more
doaj   +1 more source

Probabilistic prediction of rate‐dependent rock strength using natural gradient boosting and Gaussian process regression

Deep Underground Science and Engineering, EarlyView.
Probabilistic natural gradient boosting and Gaussian process regression models accurately predict rate‐dependent rock strength across lithologies. Static strength and strain rate dominate, while geometric factors have minimal influence, enabling interpretable and uncertainty‐aware predictions for dynamic geomechanical applications. Abstract The dynamic
Hadi Fathipour‐Azar
wiley   +1 more source

The seismicity of the Carpathians in 2022

Геофизический журнал
According to the results of observations at the seismic stations of the Carpathian region of Ukraine in 2022, the main parameters of 50 earthquakes in the range of energy classes KR=5.7÷13.7 were obtained.
S.T. Verbytskyi, R.S. Pronyshyn, V.I. Prokopyshyn, A.T. Stetskiv, I.M. Nischimenko, I.M. Keleman, G.A. Gerasymenyuk   +6 more
doaj   +1 more source

Investigation on the failure evolution characteristics of surrounding rock in deep cross‐fault roadway: Based on physical model test and numerical simulation

Deep Underground Science and Engineering, EarlyView.
This study reveals the failure evolution characteristics of deep cross‐fault roadway surrounding rock under excavation support and periodic weighting. Periodic weighting readily induces fault activation, with the spatial distribution of failed rock masses being controlled by the fault strike and dip.
Tiezhu Li, Suping Peng, Jing Zheng, Zhanhua Yang, Qijun Tian   +4 more
wiley   +1 more source

Combination of CO 2 ${\text{CO}}_{2}$ storage and geothermal energy production in porous and fractured superhot geothermal systems

Deep Underground Science and Engineering, EarlyView.
The graphical abstract depicts the workflow for porous‐ and fractured‐media simulations, where stochastically generated discrete natural fractures are required for the fracture‐media simulation. Abstract CO 2 ${\text{CO}}_{2}$ leakage is one of the main risks and barriers to geologic carbon storage. However, under the high‐temperature and high‐pressure
Christoph Scherounigg, Rotman Criollo, Victor Vilarrasa, Keita Yoshioka   +3 more
wiley   +1 more source

Defining the Relationship between Seismicity and Deformation at Regional and Local Scales [PDF]

, 2013
In this thesis, I use source inversion methods to improve understanding of crustal deformation along the Nyainquentanglha (NQTL) Detachment in Southern Tibet and the Piceance Basin in northwestern Colorado.
Williams, Nneka Njeri Akosua
core   +1 more source

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

Deep Underground Science and Engineering, EarlyView.
This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang, Guoyao Xu, Liyuan Liu, Yao Zhang, Sitao Zhu, Hongyang Chu, Kaikai Zhao   +6 more
wiley   +1 more source

Rock Stability Assessment Based on the Chronological Order of the Characteristic Acoustic Emission Phenomena

Shock and Vibration, 2018
Sudden inelastic deformations in rock are associated with acoustic emission (AE). Therefore, AE monitoring technique can be used to study the fracture processes of rock.
Penghai Zhang, Tianhong Yang, Tao Xu, Qinglei Yu, Jingren Zhou, Wancheng Zhu   +5 more
doaj   +1 more source

MULTISCALE SPATIOTEMPORAL ANALYSES OF SEISMICITY AND WASTEWATER INJECTION IN OKLAHOMA [PDF]

, 2017
The increase in seismicity in Oklahoma since 2009 has been primarily attributed to wastewater disposal, however, the extent and nature of the relationship is not clear.
Haffener, Jackson
core  

Integrated numerical simulation and source‐sink matching methodology for Basin‐Wide CO2 storage assessment in depleted reservoirs: A Cambay Basin case study

Deep Underground Science and Engineering, EarlyView.
This study presents an integrated workflow to evaluate secure and large‐scale CO2 storage in depleted oil reservoirs of the Cambay Basin, India. Industrial CO2 sources are systematically matched with mature oil fields using a quantitative source–sink framework to minimize transport distance and cost.
Bhaskarjyoti Khanikar
wiley   +1 more source