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Key construction technology of shallow-buried large span highway tunnel through rich water soft soil

Zhao Licai

Strategic Study of CAE 2015, Volume 17, Issue 1,   Pages 81-87

Abstract: 299 big pipe follow with pipe drilling occlusal and linking reinforcement technology+cross-located rightnext door after disassembly type excavation technology in shallow-buried rich water soft soil stratumtunnel excavation process.processing， make the deformation of surrounding rock control， successfully passed the construction of shallow-buriedsoft soil excavation.

Keywords： shallow buried； rich water soft soil； tunnel； pipe； reinforcement； cross-located right next door after    

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Study on support mechanical behaviour and scheme for shallow buried tunnel in weak wall rock with richwater

Wan Fei,Tan Zhongsheng,Yang Sensen,Ma Dong

Strategic Study of CAE 2014, Volume 16, Issue 8,   Pages 45-53

Abstract:

Shallow buried section under river valley of Guan Jiao tunnel has donea series of research on support mechanical behaviour and scheme for tunnel in weak wall rock with richwater.at arch part , grouting reinforcement with small pipe is conducted in wide joints of driving face.buried tunnel under river valley, and have high referential value for design and construction decision-making

Keywords： Tunnel project     Shallow buried under river valley     Weak wall rock     Support scheme     Field monitoring    

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Analysis of mechanical behaviors of big pipe-roof for shallow buried large-span tunnel

Li Jian,Tan Zhongsheng,Yu Yu,Ni Lusu

Strategic Study of CAE 2011, Volume 13, Issue 9,   Pages 92-96

Abstract:

A series of research on mechanical behaviors of big pipe-roof in shallowlarge-span loess tunnel was made on Wenxiang Tunnel in Zhengzhou-Xi'an Special Passenger RailwayThe longitudinal deformations of the pipe-roofs are monitored and the mechanical behaviors of the pipe-roofsThe force-deformation law of big pipe roof in loess tunnel was obtained: in front of the excavating faceabout 15 m, the pipe roof started to bear the load; after the excavating face about 15 m,the load became

Keywords： shallow burying mining     undercrossing construction     loess tunnel     pipe-roof     deformation monitoring    

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Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 742-753 doi: 10.1007/s11709-021-0732-x

Abstract: This study investigates the use of glass fiber-reinforced polyester (GRP) pipe powder (PP) for improvingAfter a series of direct share tests, the optimum PP addition for improving the bearing capacity of soilsof loading tests on a shallow foundation model placed in a test box.The bearing capacity of sandy soil was improved by up to 30.7%.>D) of 1.25 could sufficiently strengthen sandy soil when the optimum PP ratio was used.

Keywords： shallow foundation     sandy soil     bearing capacity     soil improvement     pipe powder    

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Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 84-86

Abstract:

Directed against the demarcating problems of deep tunnel and shallow tunnel in exiting methods, thethe paper,for the first time, expounds the demarcating thought which is based on the changing law of soilproved feasible by two engineering cases, and is of importantce to lining design and construction of soiltunnel.

Keywords： soil tunnel     deep tunnel and shallow tunnel     demarcating method    

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Field measurement and analysis of asymmetric shallow buried twin tunnels with ultra small spacing

Wang Yunlong,Tan Zhongsheng,Chen Ying

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 24-28

Abstract:

The ultra-small spacing tunnel of Jiaozhou Bay seabed tunnel in QingdaoResults show that the surrounding rock pressure and support force of the after-excavation tunnel areproblems effectively, support parameters are adjusted opportunely; the radial support capacity of the after-excavationtunnel is enhanced, and reinforcement measures of rock pillar are made at the same time.The monitoring results show that the stability of the after-construction tunnel has been effectively

Keywords： tunnel     ultra-small spacing     asymmetric     shallow-buried     field measurement    

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Deformation control criterion of shield tunnel under lateral relaxation of soft soil

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 780-795 doi: 10.1007/s11709-023-0944-3

Abstract: Metro shield tunnels under the lateral relaxation of soil (LRS) are susceptible to significant lateralTherefore, based on a specific case, a model test is conducted to realize the LRS of a shield tunnelFor a shield tunnel with a diameter of approximately 6 m and under the lateral relaxation of sandy soil, when the ellipticity of the segment is less than 2.71%, reinforcement measures are not required.

Keywords： shield tunnel     lateral relaxation of soil     deformation control criterion of segment structure     model    

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Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 194-198 doi: 10.1007/s11709-011-0105-y

Abstract: The lining of shield tunnel is usually composed of segments, in which the joints, cracks, and the groutingThe leaking of soil and groundwater causes the long-term ground loss around tunnel and thus results inshow that settlement of ground surface increases gradually with the increase of the leaked volume of tunnel

Keywords： lining deficit     leakage of water     shield tunnel     settlement     soft deposit    

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A real-life stability model for a large shield-driven tunnel in heterogeneous soft soils

Xinyu HU, Zixin ZHANG, Scott KIEFFER

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 176-187 doi: 10.1007/s11709-012-0149-7

Abstract: The current models that have been published to date only allow for homogeneous soil at the tunnel faceThis paper presents a real-life face stability model to determine the minimal pressure needed at the tunnelface for a large shield-driven tunnel in heterogeneous soft soils.It is found that the influence of multilayered soil boundaries is significant, especially for the mixed-layerThe suggested M-M model is developed by considering the influence of the heterogeneity of the soil on

Keywords： analytical solution     shield-driven tunnel     multilayered soil     face stability    

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Research on shallow tunneling construction method of large section tunnel under the water-rich sandy

Tang Guorong,Liu Zhaowei,Li Jianhua

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 98-102

Abstract:

The CRD(cross diaphragm) and hole pile method were adopted in the largesection tunnel,aiming at poor geological stability, complex engineering environment and the higher controlrequirements of subsidence in water-rich sandy gravel stratum of Beijing,which controlled the deformation

Keywords： sandy gravel stratum     large section     CRD method     hole pile     tunnel construction    

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Investigating peak stresses in fitting and repair patches of buried polyethylene gas pipes

Reza KHADEMI ZAHEDI, Pouyan ALIMOURI, Hooman KHADEMI ZAHEDI, Mohammad SHISHESAZ

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 147-168 doi: 10.1007/s11709-019-0587-6

Abstract: ends and buried under the ground, by estimating stress distribution using finite element method.the soil-structure interaction, traffic load, soil’s column weight, internal pressure, and thermal loadsAlthough the buried pipe is imposed to the maximum values of stresses, the PE100 socket is more sensitivePE gas pipe to transfer applied loads.Meanwhile, the defected buried medium density polyethylene gas pipe and its saddle fused patch can resist

Keywords： Ansys software     polyethylene     buried pipelines     polyethylene joints     polyethylene patches     peak von Misesstress     soil-pipe interaction     temperature variation    

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Construction optimization of shallow-buried tunnel in gravel strata based on controlling settlement of

Yu Jun,Liu Songyu and Gong Xiaonan

Strategic Study of CAE 2013, Volume 15, Issue 10,   Pages 97-102

Abstract: stability of surrounding rock is closely connected with the settlement of the crown during construction of shallow-buriedroad tunnel in gravel strata.The result showed that the crown settlement easily took place during excavation of shallow tunnel andIt is found that CRD method is the most appropriate for gravel strata tunnel because the crown settlement

Keywords： gravel     surrounding rock of tunnel     numerical analysis     construction optimization     crown settlement    

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Image analysis of soil failure on defective underground pipe due to cyclic water supply and drainage

Toshifumi MUKUNOKI, Naoko KUMANO, Jun OTANI

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 85-100 doi: 10.1007/s11709-012-0159-5

Abstract: and the loss of suction in the base course and then, soil drainage into the pipe.In those studies, water was supplied into the model grounds from the defected underground pipe modeland some of the soil particles in the ground were drained into the underground pipe through the defectedBased on this observation, it might be said that the bulk density of soil around the defected pipe playedinflow and soil drainage.

Keywords： relative density     grain property     model test     road subsidence     underground pipe     image processing     X-ray CT    

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Comparison of shallow tunneling method with pile and rib method for construction of subway station insoft ground

Sina AMIRI; Ali Naghi DEHGHAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 704-717 doi: 10.1007/s11709-021-0746-4

Abstract: In the present study, a comparison between the new shallow tunneling method (STM) and the traditionalFirst, by selecting Station Z6 located in the Tehran Subway Line 6 as a case study, the constructionIn the next stage, based on the numerical model validated by instrumentation data, the value of the ground

Keywords： shallow tunneling method     pile and rib method     ground surface settlement     subway station construction    

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Risk stratification system for skin and soft tissue infections after allogeneic hematopoietic stem cell

Frontiers of Medicine 2022, Volume 16, Issue 6,   Pages 957-968 doi: 10.1007/s11684-021-0910-1

Abstract: Skin and soft tissue infections (SSTIs) refer to infections involving the skin, subcutaneous tissue,This study included 228 patients (3.67%) who developed SSTIs within 180 days after allogeneic HSCT fromWe compared the differences between survivors and non-survivors a year after transplant and found that

Keywords： skin and soft tissue infections     hematopoietic stem cell transplantation     risk stratification system    

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Title Author Date Type Operation

Key construction technology of shallow-buried large span highway tunnel through rich water soft soil

Zhao Licai

Journal Article

Study on support mechanical behaviour and scheme for shallow buried tunnel in weak wall rock with richwater

Wan Fei,Tan Zhongsheng,Yang Sensen,Ma Dong

Journal Article

Analysis of mechanical behaviors of big pipe-roof for shallow buried large-span tunnel

Li Jian,Tan Zhongsheng,Yu Yu,Ni Lusu

Journal Article

Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

Journal Article

Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Journal Article

Field measurement and analysis of asymmetric shallow buried twin tunnels with ultra small spacing

Wang Yunlong,Tan Zhongsheng,Chen Ying

Journal Article

Deformation control criterion of shield tunnel under lateral relaxation of soft soil

Journal Article

Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Journal Article

A real-life stability model for a large shield-driven tunnel in heterogeneous soft soils

Xinyu HU, Zixin ZHANG, Scott KIEFFER

Journal Article

Research on shallow tunneling construction method of large section tunnel under the water-rich sandy

Tang Guorong,Liu Zhaowei,Li Jianhua

Journal Article

Investigating peak stresses in fitting and repair patches of buried polyethylene gas pipes

Reza KHADEMI ZAHEDI, Pouyan ALIMOURI, Hooman KHADEMI ZAHEDI, Mohammad SHISHESAZ

Journal Article

Construction optimization of shallow-buried tunnel in gravel strata based on controlling settlement of

Yu Jun,Liu Songyu and Gong Xiaonan

Journal Article

Image analysis of soil failure on defective underground pipe due to cyclic water supply and drainage

Toshifumi MUKUNOKI, Naoko KUMANO, Jun OTANI

Journal Article

Comparison of shallow tunneling method with pile and rib method for construction of subway station insoft ground

Sina AMIRI; Ali Naghi DEHGHAN

Journal Article

Risk stratification system for skin and soft tissue infections after allogeneic hematopoietic stem cell

Journal Article