Results 141 to 150 of about 19,951 (216)

Geomechanical performance of a novel L-shaped wellbore design for hot dry rock geothermal reservoirs: insights from fully coupled thermo-hydro-mechanical modeling. [PDF]

Sci Rep
Aliakbari Khoei M, Pak A.
europepmc   +1 more source

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Numerical simulation of heat transfer and fluid characteristics in micro-channels with obliquely arranged capsule-shaped ribs and optimization study of structural parameters. [PDF]

PLoS One
Yao J, Li C, Shen Y, Wei Y, Zheng H, Feng H, Shao G, Yang J, Li Y.   +8 more
europepmc   +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

Quantifying Formation Permeability Effects on High-Temperature Aquifer Thermal Energy Storage. [PDF]

ACS Omega
Sun Z, Wang X, Deng D, Wang Y, Huang Y, Jiang C, Zuo Y, Jiang W, Liu L.   +8 more
europepmc   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

A case study assessing energy-exergy-economic (3E) performance in solar air heaters with different winglet geometries and air flow rates. [PDF]

Sci Rep
Rajendran V, Aruldoss WJ, Selvaraj VK, Subramanian J, Winsly BW, Lisanework D.   +5 more
europepmc   +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

Editorial: Numerical and experimental studies on small/micro nuclear reactors, volume II

Frontiers in Energy Research
Yugao Ma, Shanfang Huang, Jiankai Yu, Shichang Liu, Peng Zhang   +4 more
doaj   +1 more source

Graphene oxide nanoparticles oscillation in drilling fluid for heat transfer with entropy generation over radiative cylinder in fluctuating and laminar regimes. [PDF]

Discov Nano
Khedher NB, Ullah Z, Alamirew WD, Al Arni S, Elbadawi I, Khan I, Sarris IE, Amara MB, Boujelbene M.   +8 more
europepmc   +1 more source