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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: First, an analytical solution for fracturing pressure in two different concentric regions of soil wasThen, several triaxial hydraulic fracturing tests were carried out to validate the analytical solutionFirst, there is a linear relationship between the fracturing pressure and confining pressure in concentricthe internal-layer soil is softer than the external-layer soil, the presence of internal soil on the fracturingMoreover, the influence of strength distinction between the two layers on the fracturing pressure is

Keywords： hydraulic fracturing pressure     layered     cavity expansion theory     triaxial fracturing test     cohesive soil    

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A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 305-311 doi: 10.1007/s11709-009-0040-3

Abstract: A new triaxial testing system that could control suction in wetting-induced collapsible tests was successfullyThe pedestal of the triaxial cell was made up of two parts, and the equipment not only could controlA pressure/volume-controlled equipment was combined with the triaxial system to measure the water volumeFurthermore, a series of double triaxial collapsible tests were conducted under different suctions andThe new triaxial apparatus was a useful facility to study the collapsible behavior of loess.

Keywords： triaxial apparatus for collapsible soils     controlled suction     pressure/volume controlled equipment     doubletriaxial collapsible test     single triaxial collapsible test    

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Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load triaxial

Diego Maria BARBIERI, Inge HOFF, Chun-Hsing HO

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 412-424 doi: 10.1007/s11709-021-0700-5

Abstract: The beneficial effect offered by the additives was thoroughly evaluated by performing repeated load triaxialFurthermore, a finite element model was created to simulate the repeated load triaxial test by implementing

Keywords： organosilane     lignosulfonate     crushed rocks     pavement unbound layers     repeated load triaxial test     finite    

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Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 333-345 doi: 10.1007/s11709-021-0718-8

Abstract: Hydraulic fracturing may occur and cause a significant decrease in the support pressure if the slurryof related influencing factors on the hydraulic fracturing pressure and fracture pattern.In this study, a hydraulic fracturing apparatus was developed to test the slurry-induced fracturing ofThe unconfined compressive strength of soil can reflect its ability to resist fracturing failure.Based on the test results, an empirical approach was proposed to estimate the fracturing pressure of

Keywords： slurry shield tunneling     hydraulic fracturing test     fracturing pressure     fracture dip     unconfined compressive    

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A miniature triaxial apparatus for investigating the micromechanics of granular soils with

Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 357-373 doi: 10.1007/s11709-019-0599-2

Abstract: The development of a miniature triaxial apparatus is presented.The apparatus allows for triaxial testing of a miniature dry sample with a size of (diameter heighttriaxial testing of a 0.4–0.8 mm Leighton Buzzard sand (LBS) under a constant confining pressure of 500The developed triaxial apparatus, in its combined use of X-ray μCT imaging techniques, is a powerful

Keywords： triaxial apparatus     X-ray μCT     in situ test     micro-scale mechanical behavior     granular soils    

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Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic concrete

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 86-98 doi: 10.1007/s11709-021-0793-x

Abstract: relatively abundant mineral resource and in this research, the microstructure, unconfined strength, triaxial

Keywords： plastic concrete     sulfate resistance     natural zeolite     triaxial compression test     SEM     permeability    

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Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1595-7

Abstract:

● Mechanical behavior of MBT waste affected by loading rate was investigated.

Keywords： Mechanically and biologically treated waste     Landfill     Triaxial test     Loading rate     Axial strain     Shear    

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Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension

WANG Huailiang, SONG Yupu

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 323-328 doi: 10.1007/s11709-008-0043-5

Abstract: Specimens subjected to biaxial compression-tension (C-T) and triaxial compression-compression-tensionTest data indicate that both the deformation and strength of the mass concrete specimens are lower thanTest results show that the wet-screened effect and size effect of the specimens under complex stress

Keywords： requirement     wet-screened concrete     compression-tension     maximum aggregate     principal    

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Key problems and solutions in supercritical CO

Haizhu WANG, Gensheng LI, Bin ZHU, Kamy SEPEHRNOORI, Lujie SHI, Yong ZHENG, Xiaomei SHI

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 667-672 doi: 10.1007/s11708-019-0626-y

Abstract: Supercritical CO fracturing is considered to be a new method for efficient exploitation of unconventionalviscosity, high diffusion coefficient, and lack of surface tension, which brings about great advantages for fracturingIn this paper, the above problems were analyzed by combining field test with laboratory study and specificAfter solving the above three problems, the field test of supercritical CO fracturing can be conductedThe research results can promote the industrialization process of supercritical CO fracturing.

Keywords： supercritical CO2     fracturing     friction loss     proppant carrying     flied test problem    

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Application of artificial fracturing for low permeable reservoir in Xianhe region

Xiao Shuming,Lv Zhiqiang,Guo Zhihua,Liu Xueqing

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 65-69

Abstract: the characteristics of low permeability and small porosity of high pressure low permeable reservoir, fracturingSince 2008, 79 fracturing mapping have been performed successfully in Xianhe region, which offers great

Keywords： fracturing mapping     low permeability     hydraulic fracturing    

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Effect of cavity defect on the triaxial mechanical properties of high-performance concrete

Yanbin ZHANG; Zhe WANG; Mingyu FENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 600-614 doi: 10.1007/s11709-022-0821-5

Abstract: However, the behaviour of HPC with cavities under triaxial compression is not understood, especially

Keywords： high-performance concrete     cavity     conventional triaxial compression     pressurized liquid     modified power-law    

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Behavior of Concrete Under the Triaxial Compression

Yan Dongming,Lin Gao

Strategic Study of CAE 2007, Volume 9, Issue 6,   Pages 64-70

Abstract: Based on the test results it was revealed that the ultimate strength increases dramatically with the

Keywords： triaxial stress state     confining pressure     ultimate strength     deformation     concrete    

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Application of granular solid hydrodynamics to a well-graded unbound granular material undergoing triaxial

Shixiong SONG, Qicheng SUN, Feng JIN, Chuhan ZHANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 83-88 doi: 10.1007/s11709-012-0148-8

Abstract: The deviatoric stress and volumetric strain caused by triaxial compression are calculated and then compared

Keywords： granular solid hydrodynamics     unbound granular material (UGM)     triaxial tests    

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Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 16-19

Abstract:

This paper describes horizontal effects of CBM (coal bed methane)fracturingfractures have adverse effects, including reduced production flow rate, depletion, and watering during fracturingThis discovery shows that the horizontal compression of fracturing could have adverse impact on productionof adjacent wells, and fracturing designer should be aware of it.

Keywords： coal bed methane     fracture     hydraulic fracturing    

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Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 79-89 doi: 10.1007/s11709-010-0010-9

Abstract: of the dam including slope stability analysis and estimation of the clay core cracking and hydraulic fracturing

Keywords： rockfill dam     path dependence     creep     calibration     cracking     hydraulic fracturing hazard    

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Title Author Date Type Operation

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Journal Article

A new method of studying collapsibility of loess

Yuanqing ZHU , Zhenghan CHEN ,

Journal Article

Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load triaxial

Diego Maria BARBIERI, Inge HOFF, Chun-Hsing HO

Journal Article

Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Journal Article

A miniature triaxial apparatus for investigating the micromechanics of granular soils with

Zhuang CHENG, Jianfeng WANG, Matthew Richard COOP, Guanlin YE

Journal Article

Effects of natural zeolite and sulfate ions on the mechanical properties and microstructure of plastic concrete

Journal Article

Effect of loading rate on shear strength parameters of mechanically and biologically treated waste

Journal Article

Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension

WANG Huailiang, SONG Yupu

Journal Article

Key problems and solutions in supercritical CO

Haizhu WANG, Gensheng LI, Bin ZHU, Kamy SEPEHRNOORI, Lujie SHI, Yong ZHENG, Xiaomei SHI

Journal Article

Application of artificial fracturing for low permeable reservoir in Xianhe region

Xiao Shuming,Lv Zhiqiang,Guo Zhihua,Liu Xueqing

Journal Article

Effect of cavity defect on the triaxial mechanical properties of high-performance concrete

Yanbin ZHANG; Zhe WANG; Mingyu FENG

Journal Article

Behavior of Concrete Under the Triaxial Compression

Yan Dongming,Lin Gao

Journal Article

Application of granular solid hydrodynamics to a well-graded unbound granular material undergoing triaxial

Shixiong SONG, Qicheng SUN, Feng JIN, Chuhan ZHANG

Journal Article

Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Journal Article

Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

Journal Article