Results 51 to 60 of about 2,706 (226)

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +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

Temperature-dependent deformation of methane hydrate within phase boundary

Journal of Materials Research and Technology
Natural gas hydrates preserve a huge amount of methane, yet are highly sensitive to temperature fluctuations, especially under conditions close to the phase equilibrium boundary.
Yuan Zhou, Yanlong Li, Zhengcai Zhang, Minhui Qi, Yunkai Ji, Qingguo Meng, Yilin Fu, Nengyou Wu   +7 more
doaj   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

The tikhonov regularization method in elastoplasticity [PDF]

, 2011
The numeric simulation of the mechanical behaviour of industrial materials is widely used in the companies for viability verification, improvement and optimization of designs.
Costa Jr., João Carlos A., Ávila da Silva, Claudio R., Belo, Ivan M., Azikri de Deus, Hilbeth P.   +3 more
core   +2 more sources

Dynamics of the Euler — Bernoully beam with distributed hysteresis properties

Вестник Самарского университета: Естественнонаучная серия
In this paper, we present a new mathematical approach to the analysis of a beam with distributed hysteresis properties. These hysteresis characteristics are described by two methods: phenomenological (Bouc — Wen model) and constructive (Prandtl ...
Evgeny A. Karpov
doaj   +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, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Closed form solution of the return mapping algorithm in elastoplasticity [PDF]

, 2017
In the present work a return mapping algorithm is discussed for small strain elastoplasticity boundary value problems with an exact closed form solution of the local constitutive equations.
De Angelis, Fabio, Taylor, Robert L, Taylor, Robert L.   +2 more
core   +2 more sources

Overview of Thermo-Hydro-Mechanical Constitutive Models for Saturated Cohesive Soils

Geosciences
The need to mathematically model and numerically simulate the effect of temperature on the hydro-mechanical behavior of soils, driven by the increased interest in energy geostructures and sundry other geothermal systems, has necessitated the development ...
Meysam Mashayekhi, Victor N. Kaliakin
doaj   +1 more source

Elastoplastic design theory for ultra-deep frozen wall considering large deformation features

Yantu gongcheng xuebao, 2019
The freezing method is a key sinking method used in deep aquifer. The frozen-wall design theory is a key technique for the freezing method. However, the previous design theories for a deep artificial frozen wall have neglected the influences of side-wall
ZHANG Bo , YANG Wei-hao , WANG Bao-sheng
doaj   +1 more source