Results 11 to 20 of about 1,350,701 (268)

Analytical model for undrained residual shear strength of foam-conditioned coarse-grained soils in large deformation based on effective stress principle

open access: yesYantu gongcheng xuebao, 2023
Foam is usually used in soil conditioning of earth pressure balance shield tunnelling. The smooth muck discharge and chamber pressure transmission require foam-conditioned coarse-grained soils with suitable flowability to avoid face instability and ...
ZHONG Jiazheng 1, 2, WANG Shuying 1, 2, 3, FENG Zhiyao 1, 2, ZHU Hanbiao 1, 2
doaj   +1 more source

Assessment of Pohang Earthquake-Induced Liquefaction at Youngil-Man Port Using the UBCSAND2 Model

open access: yesApplied Sciences, 2020
The practical constitutive model UBCSAND2, which combines two-mobilized planes—a maximum shear stress plane and a horizontal plane within a framework of classical plasticity approach—is used to incorporate shear-induced effects in both loading and ...
Nhat-Phi Doan   +2 more
doaj   +1 more source

Characteristics of in situ stress field of coalbed methane reservoir and its influence on permeability in western Guizhou coalfield, China

open access: yesFrontiers in Earth Science, 2023
In-situ stress is an important indicator for the preferential selection of coalbed methane (CBM) exploration dessert zones, and is a key factor affecting the production capacity of coalbed methane wells.
Fang Lv   +16 more
doaj   +1 more source

Temperature Effect on Mohr–Coulomb’s Effective Strength Parameters of Paste Backfill

open access: yesFrontiers in Materials, 2022
In-stope paste backfill monitoring at different mine sites showed anomalous increase in total stress during rest periods. One of the explanations according to a recent laboratory- model experiment was attributed to volumetric expansion caused by ...
Alsidqi Hasan, Wee Kiet Ting
doaj   +1 more source

Coupling numerical simulation of flow field,temperature field and stress field in a wide-thick slab continuous casting mold

open access: yes工程科学学报, 2016
Based on a moving boundary approach, a three-dimensional dynamic model is built for 2400 mm ~400 mm wide-thick slab molds by using ProCAST to realize the coupling simulation of flow field, temperature field and stress field.
HUANG Cheng   +3 more
doaj   +1 more source

Seepage Law of Nearly Flat Coal Seam Based on Three-Dimensional Structure of Borehole and the Deep Soft Rock Roadway Intersection

open access: yesEnergies, 2022
Exploring the evolution characteristics of gas seepage between boreholes during the drainage process is critical for the borehole’s layout and high-efficiency gas drainage.
Lei Zhang   +4 more
doaj   +1 more source

The Study of Multi-Stage Cold Forming Process for the Manufacture of Relief Valve Regulating Nuts

open access: yesApplied Sciences, 2023
Cold forging is widely used in many industries. Multi-stage cold forming is usually utilized in forging fasteners. In this study, numerical simulation and experimental investigations were carried out on a five-stage cold-forming process for the ...
Chih-Cheng Yang, Chi-Hsuan Liu
doaj   +1 more source

Clay Mineral Type and Content Control Properties of Fine-Grained CO2 Caprocks—Laboratory Insights from Strongly Swelling and Non-Swelling Clay–Quartz Mixtures

open access: yesEnergies, 2022
Understanding and predicting sealing characteristics and containment efficiency as a function of burial depth across sedimentary basins is a prerequisite for safe and secure subsurface storage.
Mohammad Nooraiepour
doaj   +1 more source

Use of the Dynamic Cone Penetrometer in Compacted Clay–Sand Layers

open access: yesApplied Sciences, 2022
The ASTM D6951 suggests a test method using the dynamic cone penetrometer (DCP) for the assessment of shallow pavement strength. This study is dedicated to evaluating a similar test method to be used for fine-grained clay–sand mixtures, which are ...
Muawia Dafalla   +2 more
doaj   +1 more source

Effect of gas adsorption-induced pore radius and effective stress on shale gas permeability in slip flow: New Insights

open access: yesOpen Geosciences, 2019
Shale, a heterogeneous and extremely complex gas reservoir, contains low porosity and ultra-Low permeability properties at different pore scales. Its flow behaviors are more complicated due to different forms of flow regimes under laboratory conditions ...
Memon Asadullah   +3 more
doaj   +1 more source

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