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The energesis and depressurization technology of filling solution cavity of high pressure and rich water

Zhang Mei,Zhang Minqing,Zhu Pengfei,Huang Hongjian

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 13-19

Abstract:

Filling solution cavity of high pressure and rich water have the characteristicsfeatures of abundant water, high pressure,large scale and complicated filling medium.Once the grouting blind area is breakdown by high pressure water during the process of construction,solution cavity of high pressure and rich water on Yichang-Wanzhou Railway.It is safe, economical, crediblecavity, to release storaged energy, to reduce tunnel's influence by water pressure during the process

Keywords： filling solution cavity of high pressure and rich water     the energesis and depressurization technology    

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Design new ideas and engineering practice of high-pressure water-rich fault “outside block and inside

Zhang Minqing,Zhang Mei

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 26-34

Abstract: It is rich in high-pressure water, with the biggest single whole water inflow of 1 800 m3/h and waterpressure of 2.5 MPa.The common design for high-pressure water-rich fault is thicker reinforced ring and stronger reinforcedquantity and pressures is uneven, then finds out weak water area and strong water area through advancedwater area, following the principle of "blocking cracks to reduce water quantity, strengthening

Keywords： high-pressure water-rich fault     unevenness     blocking water and strengthen by grouting     outside block    

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Tools repairing and welding techniques with high pressure of slurry shield under deep water-rich sandy

Cheng Mingliang,He Feng,Lv Chuantian

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 46-50

Abstract: experience in Beijing Railway underground project, the changing cutter and welding techniques with highpressure of slurry shield under deep water-rich sandy gravel stratum were summarized.One is to choose an appropriate position and an appropriate working pressure for making a good previousThe other is the replacement and grouting of high-concentration slurry, which avoided the gas escapeDuring the repair welding, we successfully realized going into the excavation chamber with high pressure

Keywords： slurry shield     sandy gravel stratum     water-rich layer     tools repair with high pressure     welding    

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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: of the high-performance concrete (HPC) members in deep underground locations.This study aims to investigate the effect of the cavity and the confining pressure on the failure mechanismsintact samples without a cavity.The experimental results show that both the increase of the confining pressure and the decrease of thecavity size are conducive to the initiation of sidewall fracture.

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

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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: This paper proposes a general analytical method to evaluate the seismic active earth pressure on a retainingThe method comprises the following steps: i) determination of the total head, ii) upper bound solutionof seismic active earth thrust, and iii) deduction for the earth pressure distribution.relies on the Fourier series expansions, and the expressions of the seismic active earth thrust and pressurereveal that insufficient drainage and earthquakes are crucial factors that cause unfavorable earth pressure

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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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 waspresented based on the cavity expansion theory.Then, 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 proposed solution is potentially useful for geotechnical problems involving aspects of cohesive soil

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

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Grouting construction technology of high pressure and rich water fault F11 in Qiyueshan Tunnel

Zhuo Yue,Sun Guoqing

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 82-86

Abstract: Water gushing happens in these strata frequently, which affects construction schedule and constructionQiyueshan Tunnel on Yichang-Wanzhou Railway crosses underground rivers, karst caves and fractured faults in highpressure and water gushing strata.Fractured fault F11, which has high water pressure, large volume of water gushing and complicated geologicalcontrol and rock collapse prevention in high pressure and rich water fault F11.

Keywords： Qiyueshan Tunnel     fractured fault     technical challenges     new construction scheme     new construction technology     effect examination method    

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Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 329-333 doi: 10.1007/s11709-007-0043-x

Abstract: elastic and plastic limit loads of a thick-walled cylinder made of these materials subject to external pressure
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Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity

Zhaomiao LIU, Chengyin ZHANG, Feng SHEN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 359-368 doi: 10.1007/s11465-011-0222-2

Abstract: to increase and the stability of oil cavity to reduce.The oil cavity pressure increases along the direction of the motion of the turntable; it is distributedThe distribution of pressure is determined by the locations of the vortex.When the vortex is close to the wall, the wall pressure increases at its location.Otherwise, the wall pressure decreases first and then increases after the center of the vortex.

Keywords： hydrostatic oil cavity     flow state     oil cavity pressure     stability     vortex    

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Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 219-225 doi: 10.1007/s11709-008-0037-3

Abstract: one-dimensional shear wedge theory, in which the influences of the upstream concrete face and hydrodynamic pressureof water on the dams’ natural frequencies and modes are discussed.

Keywords： upstream concrete     hydrodynamic pressure     vibration     one-dimensional     applicability    

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Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure

Xiaomao WANG,Hongwei YANG,Zhenyu LI,Shaoxia YANG,Yuefeng XIE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 155-163 doi: 10.1007/s11783-014-0740-3

Abstract: High-pressure membrane process is one of the cost-effective technologies for the treatment of groundwaterThree membrane systems were set up and two brands of reverse osmosis (RO), four low-pressure RO (LPROcombination with dosing antiscalent, was not sufficient to reduce the fouling potential of the raw waterm treated water, respectively.m finished water, respectively.

Keywords： reverse osmosis (RO)     nanofiltration (NF)     water quality standards     sodium     fluoride     cost estimation    

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Research on Water Velocity in Filling up Section of Horizontal Pipe

Wang Dongmei,Zhang Shilin

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 66-68

Abstract: Water velocity distribution in circular section of pipe has been studied for a long time, and advancedBased on fore theory and some tentatives, theory about distribution of water velocity in pipe of arcuate

Keywords： arcuate section     filling up bed     water velocity     zero shear point     water-power gradient    

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A novel high-temperature and high-pressure hydraulic pump based on mononeuron control

Linhui ZHAO, Xin FANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 219-223 doi: 10.1007/s11465-009-0024-y

Abstract: Based on structures and characteristics of traditional hydraulic pumps, this paper proposes a novel high-temperatureand high-pressure hydraulic pump (HHHP) that can work under 150°C and 28 MPa to overcome problems oftraditional high-temperature plunger pumps.Therefore, reduced fluctuations and stable pressure output is obtained.

Keywords： mononeuron PID control     hydraulic pump     pressure fluctuation    

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Mechanism and control factors of hydrate plugging in multiphase liquid-rich pipeline flow systems: a

Shuwei ZHANG, Liyan SHANG, Zhen PAN, Li ZHOU, You GUO

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 747-773 doi: 10.1007/s11708-022-0830-z

Abstract: the concept that hydrates are easily formed in oil and gas pipelines owing to the low-temperature and high-pressureenvironment, although requiring the cooperation of flow rate, water content, gas-liquid ratio, and otherthe significant research efforts specializing in the mechanisms of hydrate blockages in the liquid-richsystem, including oil-based, water-based, and partially dispersed systems (PD systems), in gatheringIncreasing water content can potentiate the growth of hydrates and change the oil-water dispersion degree

Keywords： hydrate     flow rate     water content     mechanism of pipeline blockage     rich liquid phase system    

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Assessment and validation of liquid breakup models for high-pressure dense diesel sprays

Yi REN,Xianguo LI

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 164-175 doi: 10.1007/s11708-016-0407-9

Abstract: In this paper, different models for liquid breakup processes in high-pressure dense diesel sprays andRayleigh-Taylor (RT) breakup model gives the most reasonable predicted results in both engine simulation and high-pressureTAB) based models and the RT model do not provide reasonable predictions for the characteristics of high-pressure

Keywords： breakup model     diesel engine     high-pressure injection     simulations    

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Title Author Date Type Operation

The energesis and depressurization technology of filling solution cavity of high pressure and rich water

Zhang Mei,Zhang Minqing,Zhu Pengfei,Huang Hongjian

Journal Article

Design new ideas and engineering practice of high-pressure water-rich fault “outside block and inside

Zhang Minqing,Zhang Mei

Journal Article

Tools repairing and welding techniques with high pressure of slurry shield under deep water-rich sandy

Cheng Mingliang,He Feng,Lv Chuantian

Journal Article

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

Yanbin ZHANG; Zhe WANG; Mingyu FENG

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article

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

Journal Article

Grouting construction technology of high pressure and rich water fault F11 in Qiyueshan Tunnel

Zhuo Yue,Sun Guoqing

Journal Article

Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Journal Article

Influence of boundary conditions and turntable speeds on the stability of hydrostatic oil cavity

Zhaomiao LIU, Chengyin ZHANG, Feng SHEN

Journal Article

Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Journal Article

Pilot study for the treatment of sodium and fluoride-contaminated groundwater by using high-pressure

Xiaomao WANG,Hongwei YANG,Zhenyu LI,Shaoxia YANG,Yuefeng XIE

Journal Article

Research on Water Velocity in Filling up Section of Horizontal Pipe

Wang Dongmei,Zhang Shilin

Journal Article

A novel high-temperature and high-pressure hydraulic pump based on mononeuron control

Linhui ZHAO, Xin FANG

Journal Article

Mechanism and control factors of hydrate plugging in multiphase liquid-rich pipeline flow systems: a

Shuwei ZHANG, Liyan SHANG, Zhen PAN, Li ZHOU, You GUO

Journal Article

Assessment and validation of liquid breakup models for high-pressure dense diesel sprays

Yi REN,Xianguo LI

Journal Article