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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 concentricpressure regardless of the proportion of internal-layer soil.Moreover, 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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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 slurryPreventing the occurrence of hydraulic fracturing in a slurry shield requires investigating the effectsof 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 fracturing pressure increases linearly with the increase in the circumferential pressure, but it

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

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Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 377-382 doi: 10.1007/s11465-011-0226-y

Abstract:

Hydraulic thrust system is an important system in a shield tunneling machine.Pressure regulation of thrust cylinders is the most important function for thrust system during tunnelIn this paper, a hydraulic thrust system is explained, and a corresponding simulation model is carriedPump displacement may have a greater effect on pressure regulation and oil supply flow rate should beA exacting situation is simulated to explain how pressure regulation works during tunnel excavation.

Keywords： tunnel     hydraulic thrust system     pressure regulation     simulation    

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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 ofTherefore, reduced fluctuations and stable pressure output is obtained.

Keywords： mononeuron PID control     hydraulic pump     pressure fluctuation    

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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: "text-align: justify;">Aiming at the characteristics of low permeability and small porosity of high pressurelow permeable reservoir, fracturing mapping was employed during transformation.Since 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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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: assessment of the dam including slope stability analysis and estimation of the clay core cracking and hydraulicfracturing hazard.

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

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Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Strategic Study of CAE 2009, Volume 11, Issue 2,   Pages 33-35

Abstract: justify;">Stress distribution in the third subsidence belt is presented , with great amounts of data on hydraulicfracture orientation obtained from monitoring hydraulic fracturing , and the direction of the maximum

Keywords： hydraulic fracturing monitoring with micro- seismics     third subsidence belt     direction of maximumprinciplestress     hydraulic fracturing treatment    

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Application of hydraulic fracturing techniques for CBM wells in Qinshui coal field

ou Jinglong,Liu Zhidong,Li Jianzhong

Strategic Study of CAE 2011, Volume 13, Issue 1,   Pages 89-92

Abstract: "text-align: justify;">According to the CBM(coal bed methane) features and possible difficulties in fracturingtechniques, a new hydraulic fracturing method with casing injection, high output and activated water

Keywords： CBM(coal bed methane)     natural joint     adsorption     hydraulic fracturing    

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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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Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 73-75

Abstract:

This article applies basic formula to the calculation of a relationship between the hydraulic pressureextremes ratio of hydraulic system and the extremes ratio efficiencies.This relationship shows that the greater the hydraulic pressure extremes ratio is, the lower the extremesThe article holds that the hydraulic pressure extremes ratio can be designed and chosen.

Keywords： hydraulic pressure extremes ratio     extremes ratio efficiencies     hydraulic system    

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Characters of Future Aircraft Hydraulic System

Wang Zhanlin,Chen Bin

Strategic Study of CAE 1999, Volume 1, Issue 3,   Pages 5-10

Abstract: High density of driving power, fast response, high rigidity and high-precision are the advantages of hydraulicAll of flight actuator and transmitting systems of today´s aircrafts are nearly driven by hydraulicIn this paper, main developmental trend of airborne hydraulic system, especially for military aircraftLight weight, small size, high-pressure, high power, variable pressure, intellectualization, integrationEspecially, high-pressure, variable pressure hydraulic intelligent pump source system is very important

Keywords： airborne hydraulic systems     high-pressure     variable pressure     redundancy     power-by-wire    

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Microseismic monitoring technology

Tang Chunhua,Gu Guangqing

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 95-99

Abstract:

Microseismic (MS) monitoring is a hot topic in the applied geophysics recently. The MS mechanism and histories are introduced firstly in this article, and then the instruction of the MS equipment such as acquisition strategies, optimal sensors, array design, digital-signal processing, event location, velocity calibration, and monitoring deployment, is discussed. MS is a great technology with a long future, and we need to foster the understanding and acceptance of this technology.

Keywords： microseismic monitoring     hydraulic fracturing     oil and natural gas     SNR (signal to noise ratio)     event    

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Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects

Liang LUO, Zhengyi JIANG, Dongbin WEI, Xiaogang WANG, Cunlong ZHOU, Qingxue HUANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 66-73 doi: 10.1007/s11465-018-0468-z

Abstract: Micro-hydromechanical deep drawing (MHDD), a typical microforming method, has been developed to take advantage of hydraulicWith reduced dimensions, the hydraulic pressure development changes; accordingly, the lubrication conditionMoreover, defined wrinkle indexes have been shown to have a complex relationship with hydraulic pressureHigh hydraulic pressure can increase the maximum drawing ratio (drawn cup height), whereas the surfacefinish represented by the wear is not linearly dependent on the hydraulic pressure due to the wrinkles

Keywords： micro-hydromechanical deep drawing     microforming     size effects     lubrication     Voronoi    

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Application of Hydraulic Pressure Sensore System on Riverb ed ErosionDepth for Real-time Monitoring

Chen Zhijian,Liu Dawei,Zhang Weiwen

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 17-21

Abstract:  Application,  technical difficulty and its settlement scheme of hydraulic pressure sensors

Keywords： hydraulic pressure sensor     tidal reach     group piled foundation     local scour     real-time monitoring    

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Interactions between the Design and Operation of Shale Gas Networks, Including CO2 Sequestration

Sharifzadeh Mahdi,Xingzhi Wang,Nilay Shah

Engineering 2017, Volume 3, Issue 2,   Pages 244-256 doi: 10.1016/J.ENG.2017.02.007

Abstract: the ultra-low permeability of shale gas reservoirs, special procedures such as horizontal drilling, hydraulicfracturing, periodic well shut-in, and carbon dioxide (CO2) injection may be required inhighest shale gas production may not necessarily be the most profitable design; and that drilling, fracturing

Keywords： Shale gas     Hydraulic fracturing     Scheduling     Well shut-in     CO2 sequestration     Simultaneous optimization    

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Title Author Date Type Operation

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

Journal Article

Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Journal Article

Simulation analysis of pressure regulation of hydraulic thrust system on a shield tunneling machine

Zhibin LIU, Haibo XIE, Huayong YANG

Journal Article

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

Linhui ZHAO, Xin FANG

Journal Article

Application of artificial fracturing for low permeable reservoir in Xianhe region

Xiao Shuming,Lv Zhiqiang,Guo Zhihua,Liu Xueqing

Journal Article

Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

Journal Article

Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Journal Article

Application of hydraulic fracturing techniques for CBM wells in Qinshui coal field

ou Jinglong,Liu Zhidong,Li Jianzhong

Journal Article

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

Li Mengxi,Zhang Cong

Journal Article

Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Journal Article

Characters of Future Aircraft Hydraulic System

Wang Zhanlin,Chen Bin

Journal Article

Microseismic monitoring technology

Tang Chunhua,Gu Guangqing

Journal Article

Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects

Liang LUO, Zhengyi JIANG, Dongbin WEI, Xiaogang WANG, Cunlong ZHOU, Qingxue HUANG

Journal Article

Application of Hydraulic Pressure Sensore System on Riverb ed ErosionDepth for Real-time Monitoring

Chen Zhijian,Liu Dawei,Zhang Weiwen

Journal Article

Interactions between the Design and Operation of Shale Gas Networks, Including CO2 Sequestration

Sharifzadeh Mahdi,Xingzhi Wang,Nilay Shah

Journal Article