Results 21 to 30 of about 162,962 (266)

Measurement and Evaluation for Interbedded Pore Water Pressure of Saturated Asphalt Pavement under Vehicle Loading

open access: yesApplied Sciences, 2020
Dynamic water scouring damage is the main cause of pavement structure damage, and the main reason for dynamic water scouring damage is the rapid change of pore water pressure caused by vehicle load.
Wuxing Chen   +3 more
doaj   +1 more source

Acceleration of Debris Flow Due to Granular Effect

open access: yesFrontiers in Earth Science, 2021
Pore water pressure has been recognized as an important factor to enhance the mobility of debris flow moving in channel of very gentle slope. The creation and dissipation of pore water pressure are associated with interaction between grains.
Taiqiang Yang   +11 more
doaj   +1 more source

Pore water pressure change-related characteristic and its critical rupture precursor of rock under triaxial compression

open access: yes工程科学学报, 2015
The change of pore water pressure in saturated rocks was closely associated with its damage deformation. In order to study the precursory characteristics of pore water pressure before the damage of saturated rock, the triaxial compression test and ...
ZHANG Yue-zheng, JI Hong-guang
doaj   +1 more source

Pore Structure Evolution in Sandstone of Underground Gas Storage during Cyclic Injection and Production Based on Nuclear Magnetic Resonance Technology

open access: yesEnergies, 2023
The underground gas storage (UGS) in depleted sandstone reservoirs forms the largest proportion of the UGS market in China. Multiple cycles of natural gas injection and production in the sandstone cause the rapid increase and drawdown of pore pressure ...
Xiaosong Qiu   +6 more
doaj   +1 more source

Numerical simulation on the effect of pore pressure gradient on the rules of hydraulic fracture propagation

open access: yesEnergy Exploration & Exploitation, 2021
To clarify the influence of pore pressure gradient on hydraulic fracture propagation, the stress distribution in and around the borehole is explained by theoretical analysis method in this paper.
Weiyong Lu, Changchun He
doaj   +1 more source

Experimental Investigation of the Effect of Evenly Distributed Pore Pressure on Rock Damage

open access: yesLithosphere, 2022
The effect of pore pressure on rock damage is a core problem in underground engineering. In this paper, the pseudotriaxial hydromechanical coupling experiment system is utilized to carry out the physical model experiment of the pore pressure on the rock ...
Xinglong Zhao   +3 more
doaj   +1 more source

Real-Time Pore Pressure Detection: Indicators and Improved Methods

open access: yesGeofluids, 2017
High uncertainties may exist in the predrill pore pressure prediction in new prospects and deepwater subsalt wells; therefore, real-time pore pressure detection is highly needed to reduce drilling risks.
Jincai Zhang, Shangxian Yin
doaj   +1 more source

Using a novel approach to determine the pore pressure of West Qurna 15 oil well in South of Iraq

open access: yesJournal of Engineering, 2020
Pore pressure means the pressure of the fluid filling the pore space of formations. When pore pressure is higher than hydrostatic pressure, it is named abnormal pore pressure or overpressure.
Sara Thaier Haider   +2 more
doaj   +1 more source

One-dimensional compression theoretical model for shield foam-conditioned coarse-grained soil considering influences of gradation

open access: yesYantu gongcheng xuebao, 2023
Under the state of chamber pressure, the pore pressure of conditioned soil will be generated, and it can balance the water pressure in front of the excavation to reduce the level of groundwater infiltration.
ZHAN Yongjie 1, 2, WANG Shuying 1, 2, YANG Xiuzhu 1, WANG Haibo 3
doaj   +1 more source

Development of a pore gas pressure transducer used in unsaturated soils at high water content [PDF]

open access: yesE3S Web of Conferences, 2019
Pore gas pressure in soil is an important parameter in many geoscience applications such as evaluating the effects of trapped pore gas pressure on water infiltration through soil mass, optimizing the design of gas extraction wells in landfills and ...
Chen Rui   +3 more
doaj   +1 more source

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