Results 91 to 100 of about 30,179 (297)

Form and load transfer aspects of foundation systems: Case‐based implementation and adaptation for buildings

Deep Underground Science and Engineering, EarlyView.
Upon conceptualization of structural behavior, foundations in terms of their form are divided into linear (1D), planar (2D), and volumetric (3D). Regarding the load transfer mechanisms, linear foundation systems are considered vector‐acting, planar foundations are divided into section and surface‐acting, and volumetric ones are recognized as block ...
Abolfazl Eslami, Amirhossein Ebrahimipour, Meysam Imani, Reza Imam, Pinqiang Mo   +4 more
wiley   +1 more source

A method for calculating saturation in tight sandstone reservoirs based on the dual porosity model

Frontiers in Earth Science
IntroductionWith the continuous development of exploration and development, tight sandstone reservoirs have become an essential field of oil and gas exploration.
Yi Xin, Yi Xin, Yi Xin, Wei Duan, Chuang Han, Chuang Han, Chuang Han, Kang Bie, Kang Bie, Kang Bie, Xinjian Zhao, Xinjian Zhao, Xinjian Zhao, Yong Ai, Yong Ai, Yong Ai, Peiqiang Zhao   +16 more
doaj   +1 more source

Experimental and constitutive modeling investigations on marble in Jinping Underground Laboratory

Deep Underground Science and Engineering, EarlyView.
The objective of this study is to reveal the underlying mechanisms behind the brittle‐ductile transition of the marble through a combination of experimental research and constitutive modeling. A series of triaxial compression and triaxial cyclic loading tests are conducted.
Susheng Wang, Qiang Zhang, Hao Luo, Zhinan Lin   +3 more
wiley   +1 more source

Nuclear Magnetic Resonance and High-Speed Centrifugation for Gas-Water Relative Permeability Curve of Low-Permeability and Tight Sandstone [PDF]

E3S Web of Conferences
Gas-water relative permeability curve is the foundation of gas reservoir dynamic analysis and numerical simulation. It is generally obtained through gas displacing water experiment.
Yang Fenglai, Liu Huaxun, Gao Shusheng, He Sijie, Fang Feifei, Wang Cuili, Ye Liyou, Zhou Kun, Yang Xuejun, An Weiguo   +9 more
doaj   +1 more source

A novel construction approach for the pore structure model principally focuses on the controllable roundness of rock particles

Deep Underground Science and Engineering, EarlyView.
Particle rounding effects comparison of different methods: (a), (b), and (c) are the rounding results using the B‐spline curve method with different R; (d), (e), and (f) are the results of vertex rounding substitution method with different rounding radii.
Jiabin Dong, Ning Yang, Yi Jin, Ying Wu, Dandan Liu, Junling Zheng, Jingyan Zhao   +6 more
wiley   +1 more source

Research and Patterns of Rock Acid Pressure Corrosion Tests [PDF]

E3S Web of Conferences
In China, tight sandstone gas reservoirs are widely distributed, yet their development is hindered by issues such as low extraction efficiency and a monotonous extraction approach.
Hu Jiangchun, Huang Xuewei, An Luyang, Wang Chenxu, li Mengyuan, Liu Bing, Liu Miao   +6 more
doaj   +1 more source

Assessment of Karstification Degree in the Copacabana Group for a Tailings Dam Foundation, South Andes, Peru [PDF]

, 2013
The world-wide occurrence of carbonate rocks is extensive, and Peru is no exception. Many mining facilities are located in or on carbonate rocks. Under specific conditions, carbonate rocks show varying degrees of karstification, which represent a ...
Azodolmolky, S., Nejabati, R., Pazouki, M., Simeonidou, D., Wieder, P., Yahyapour, R.   +5 more
core   +2 more sources

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

Deep Underground Science and Engineering, EarlyView.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang, Jian Yu, Yun Wu, Cong Gong, Xiaozhao Li, Kui Zhao, Dickson Moyo   +6 more
wiley   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Critical dynamic conditions for gas migration in tight sandstone

Shiyou shiyan dizhi
Physical simulation serves as a crucial method for understanding the mechanisms of underground oil and gas migration and accumulation. To gain a deeper understanding of gas migration mechanisms in tight reservoirs under deep geological conditions ...
Ruogu WANG, Xiangyang QIAO, Jinsong ZHOU, Yuhong LEI, Jun CAO, Xiao YIN, Bolun ZHUGENG   +6 more
doaj   +1 more source