Results 31 to 40 of about 207,601 (314)

Coupling effects of bidirectional cyclic loading and loading frequency on pore water pressure of saturated soft clay

open access: yesYantu gongcheng xuebao, 2017
A series of undrained cyclic tests with variable confining pressures are conducted on Ningbo saturated soft clay by using the GDS cyclic triaxial system. In this study, the coupling effects of cyclic deviatoric stress and cyclic confining pressure on the
HUANG Jue-hao 1, 2, CHEN Jian 1, 2, KE Wen-hui 3, ZHONG Yu 4, QIU Yue-feng 1, 2
doaj   +1 more source

Effects of Initial Shear Stress and Vibration Frequency on the Dynamic Pore-Water Pressure of Saturated Sands

open access: yesAdvances in Civil Engineering, 2018
The cyclic triaxial system is used to investigate the effects of confining pressure, initial shear stress, vibration frequency, and dynamic stress on the pore-water pressure characteristics of saturated sand in the Wenchuan area.
Jian Zhang, Jiuting Cao, Sijie Huang
doaj   +1 more source

A semi-empirical model to predict excess pore pressure generation in partially saturated sand [PDF]

open access: yesE3S Web of Conferences, 2020
Past studies revealed that excess pore pressure generation due to cyclic loading is highly governed by induced strains, volumetric deformation potential of soil, number of cycles, and bulk stiffness of pore fluid.
Sayedmasoud Mousavi, Ghayoomi Majid
doaj   +1 more source

Effect of pressure in pore on pore morphology of porous Cu-1.3Cr alloy with directional pores

open access: yesJournal of Aeronautical Materials, 2022
Cu-1.3Cr alloys with directional pore structure were fabricated under hydrogen atmosphere. The pore morphology during the solidification is investigated.
SONG Qunling   +4 more
doaj   +1 more source

A Fluid-Solid Coupling Mathematical Model of Methane Driven by Water in Porous Coal

open access: yesGeofluids, 2018
The existence of the water-driven-methane effect in gassy coal has been verified by field tests and laboratory experiments. However, a water-driven-methane mathematical model that considers methane adsorption and desorption has not yet been established ...
Bingxiang Huang, Weiyong Lu
doaj   +1 more source

Mechanism of pore pressure time lag for saturated clays

open access: yesYantu gongcheng xuebao
Time lag of pore pressure often occurs during oedometer consolidation of saturated clays. After applying loading, the pore pressure measured at the base of specimens increases up to the maximum and then decreases with the increase in consolidation time ...
OU Yanyuxin 1, MOU Cong 1, WENG Jiaxing 2, HONG Zhenshun 1
doaj   +1 more source

Numerical analysis on mechanical difference of sandstone under in-situ stress, pore pressure preserved environment at depth

open access: yesInternational Journal of Mining Science and Technology, 2023
Deep in-situ rock mechanics considers the influence of the in-situ environment on mechanical properties, differentiating it from traditional rock mechanics.
Hongwei Zhou   +7 more
doaj   +1 more source

Study on the Variation Rule and Characteristics of Pore Water Pressure in the Failure Process of Saturated Rock

open access: yesShock and Vibration, 2021
With the development of tunnels and other engineering constructions into the deep strata, rock masses are more prone to dynamic damage such as rock bursts under in situ conditions and excavation disturbances.
Yuezheng Zhang
doaj   +1 more source

Hospitalization Through Families’ Eyes: Comparing Inpatient Care Quality for Children With Sickle Cell Disease and Cystic Fibrosis in Canada

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Sickle cell disease (SCD) is a chronic, inherited hemoglobinopathy that requires frequent hospitalization for disease‐related complications. Canadian data on inpatient care is limited. This study compared caregiver‐reported hospital experiences of children with SCD to those with cystic fibrosis (CF), a chronic, autosomal recessive ...
Hailey M. Zwicker   +11 more
wiley   +1 more source

Minimum stress and pore fluid pressure in sedimentary basins [PDF]

open access: yes, 2001
Leak-off pressures (LOPs) recorded during leak-off tests (LOTs) conducted down boreholes are often used to estimate the magnitude of the minimum stress (usually assumed to be horizontal – S(_h)) in the subsurface.
White, Adrian James
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