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

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 reinforcedThe grouting holes and grouting quantity of "outside block and inside solid grouting"  are 50 % less than those of whole cross section grouting, and the grouting speed is 80 % higher when

Keywords： high-pressure water-rich fault     unevenness     blocking water and strengthen by grouting     outside blockand inside solid grouting     innovation    

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Analysis for the Stability of Covered Karst Base and a Pre-disposing Way with Pressure Grouting

Sun Chengfang,Yang Anrong,Dong Hanxiong,Peng Shaomin

Strategic Study of CAE 2002, Volume 4, Issue 7,   Pages 56-59

Abstract: covered karst base, a kind of way, which can be adopted to predispose the covered karst base using pressuregrouting, is developed in this paper.The evaluation of grouting effect indicates this way can be carried out economically and technically.

Keywords： karst base     pressure grouting     evaluation of effect    

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Technology of strengthening soil and keeping pressure of large diameter slurry shield inside with highpressure

Meng Haifeng,Su Qinggui,Zhai Zhiguo

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 70-74

Abstract: the engineering example of underground diameter project replacing the cutter teeth inside with high pressure, the application of grouting reinforcement and pile foundation reinforcement in soil strengthening wasThe causes of gas leakage of inside with high pressure were analyzed, and the countermeasures were proposed

Keywords： shield     inside with high pressure     keep pressure     grouting    

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Experimental study on pile-end post-grouting piles for super-large bridge pile foundations

Weiming GONG, Guoliang DAI, Haowen ZHANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 228-233 doi: 10.1007/s11709-009-0019-0

Abstract: The application of pile-end post-grouting piles for super-large bridge pile foundations in some importantThe results show that the bearing capacity of the piles are increased in different degrees after groutingalthough the technical parameters, including the patterns of grouting pipes, pressure, dosages of cement, duration of grouting lasting time, are different.In addition, the calculation formula for the post-grouting piles under specified grouting condition was

Keywords： self-balanced testing technique     pile-end post-grouting     bearing capacity     grouting technology    

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Seismic performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite

Frontiers of Structural and Civil Engineering   Pages 827-854 doi: 10.1007/s11709-023-0954-1

Abstract: In this study, a fiber element model of a fabricated concrete pier with grouting sleeve-prestressed tendonsleeve-fabricated pier, and a grouting sleeve-prestressed tendon composite fabricated pier.Under traditional non-near-fault ground motions, the pier top displacements of the grouting sleeve-fabricatedIn addition, the plastic hinge zones of the grouting sleeve-fabricated pier and the composite fabricatedpier shifted to the joint seam and upper edge of the grouting sleeve, respectively.

Keywords： seismic performance     continuous girder bridge     grouting sleeve-prestressed tendon composite connections    

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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: Tunnel on Yichang-Wanzhou Railway crosses underground rivers, karst caves and fractured faults in high pressureFractured fault F11, which has high water pressure, large volume of water gushing and complicated geologicalTaking the technologies of grouting, water control and rock collapse prevention adopted for fault F11technology and new effect examination method for water control and rock collapse prevention in high pressure

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

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Study on the grouting technology adopted in F1 weathered trough for Xiamen Xiang’an Subsea Tunnel

Guo Xiaohong,Wang Mengshu

Strategic Study of CAE 2011, Volume 13, Issue 9,   Pages 38-41

Abstract: water inflow and great difficulty in construction in Xiamen Xiang'an Subsea Tunnel,full-sectional groutingreinforcement and waterproofing,5 m grouting inside heading, 70 m along longitudinal direction of tunneland superfine cement single-fluid grouting as major grouting material were applied according to poorMeanwhile,the corresponding parameters of grouting were established after drillings for grouting wereThe research results can provide technical reference for similar projects in grouting and waterproofing

Keywords： Ximen Xiang’an Subsea Tunnel     grouting reinforcement     stability     numerical simulation    

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Clearance grouting process test of Three Gorges Project ship lift rack and nut column

Zhan Jianxia and Li Jihu

Strategic Study of CAE 2013, Volume 15, Issue 9,   Pages 45-49

Abstract:

In order to choose the suitable grouting material and grouting process, and simulate the actual situation of clearance grouting of rack and nut column in ship lift, groutingComparing three kinds of domestic grouting material and the German PAGEL grouting material in groutingIn prototype grouting test, selection of the grouting equipment type, mixing time, templates seal, methodof grouting parameters control of grouting flow were researched, and some applicable grouting material

Keywords： rack     nut column     grouting     ship lift     Three Gorges Project    

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Quantitatively assessing the pre-grouting effect on the stability of tunnels excavated in fault

Xiao YAN, Zizheng SUN, Shucai LI, Rentai LIU, Qingsong ZHANG, Yiming ZHANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1393-1404 doi: 10.1007/s11709-019-0563-1

Abstract: Pre-grouting is a popular ground treatment strategy utilized to enhance the strength and stability ofFirst, how should the grouting size be determined?Second, when should excavation begin after grouting?tunnel section are evaluated, thereby assisting designers by quantitatively assessing the effects of pre-grouting

Keywords： pre-grouting     stability analysis     factor of safety     discontinuity layout optimization    

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Synchronous grouting of large diameter slurry shield in water-rich sandy gravel stratum

Zhang Changqiang,Zhai Zhiguo,Chen Mingjuan,Jin Zhongxiang

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 75-78

Abstract: stratum deformation mechanism information, the empirical formula of the main parameters of synchronized grouting

Keywords： sandy gravel stratum     slurry shield     synchronous grouting     construction technology    

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Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0676-4

Abstract: decision-making approach for the deviation correction trajectory and posture rectification load for an earth pressure

Keywords： additional position change     deviation correction trajectory     earth pressure balance shield     mechanical    

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Combustion instability detection using the wavelet detail of pressure fluctuations

JI Junjie, LUO Yonghao

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 116-120 doi: 10.1007/s11708-008-0019-0

Abstract: A combustion instability detection method that uses the wavelet detail of combustion pressure fluctuationsTo confirm this method, combustion pressure fluctuations in a stoker boiler are recorded at stable andunstable combustion with a pressure transducer.It shows that the wavelet approximation indicates the general pressure change in the furnace, and the

Keywords： comparison     wavelet approximation     pressure transducer     general pressure     consistent    

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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 wasFirst, there is a linear relationship between the fracturing pressure and confining pressure in concentricinternal-layer soil is softer than the external-layer soil, the presence of internal soil on the fracturing pressureexternal-layer soil, the existence of the internal-layer soil has a strengthening effect on the fracturing pressureMoreover, 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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Treatment of Highly Weathered Rock Mass at the Abutment of Earth-Rock Dam in Qiaoqi Hydropower Project

Wang Shougen

Strategic Study of CAE 2005, Volume 7, Issue 3,   Pages 78-83

Abstract: The treatment scheme for the highly weathering rock mass on both abutments and grouting tests and groutingThe feasibility to adopt consolidation grouting and seepage treatment measures is argued and the treatment

Keywords： Qiaoqi Hydropower Station     earth-rock dam     treatment of abutment     highly weathered rock mass     consolidation grouting     curtain grouting    

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“Partial pressures” of humid air in wide pressure and temperature ranges

Zidong WANG, Hanping CHEN, Shilie WENG

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 511-517 doi: 10.1007/s11708-013-0281-7

Abstract: “Partial pressure” in humid air is a question very much concerned by scientists and no satisfactory answerresults obtained by the proposed method are quite different from that obtained by Dalton’s partial pressureThe fundamental behaviors of water vapor and dry air are studied in depth in wide pressure and temperatureOne discovery is that the “partial pressure” of the water vapor in saturated humid air equals , rather

Keywords： partial pressure     Dalton’s partial pressure law     humid air     saturated     unsaturated    

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Title Author Date Type Operation

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

Zhang Minqing,Zhang Mei

Journal Article

Analysis for the Stability of Covered Karst Base and a Pre-disposing Way with Pressure Grouting

Sun Chengfang,Yang Anrong,Dong Hanxiong,Peng Shaomin

Journal Article

Technology of strengthening soil and keeping pressure of large diameter slurry shield inside with highpressure

Meng Haifeng,Su Qinggui,Zhai Zhiguo

Journal Article

Experimental study on pile-end post-grouting piles for super-large bridge pile foundations

Weiming GONG, Guoliang DAI, Haowen ZHANG

Journal Article

Seismic performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite

Journal Article

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

Zhuo Yue,Sun Guoqing

Journal Article

Study on the grouting technology adopted in F1 weathered trough for Xiamen Xiang’an Subsea Tunnel

Guo Xiaohong,Wang Mengshu

Journal Article

Clearance grouting process test of Three Gorges Project ship lift rack and nut column

Zhan Jianxia and Li Jihu

Journal Article

Quantitatively assessing the pre-grouting effect on the stability of tunnels excavated in fault

Xiao YAN, Zizheng SUN, Shucai LI, Rentai LIU, Qingsong ZHANG, Yiming ZHANG

Journal Article

Synchronous grouting of large diameter slurry shield in water-rich sandy gravel stratum

Zhang Changqiang,Zhai Zhiguo,Chen Mingjuan,Jin Zhongxiang

Journal Article

Deviation correction strategy for the earth pressure balance shield based on shield–soil interactions

Journal Article

Combustion instability detection using the wavelet detail of pressure fluctuations

JI Junjie, LUO Yonghao

Journal Article

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

Journal Article

Treatment of Highly Weathered Rock Mass at the Abutment of Earth-Rock Dam in Qiaoqi Hydropower Project

Wang Shougen

Journal Article

“Partial pressures” of humid air in wide pressure and temperature ranges

Zidong WANG, Hanping CHEN, Shilie WENG

Journal Article