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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:

By analysis on the stability of covered karst base, a kind of way, which can be adopted to predisposethe covered karst base using pressure grouting, is developed in this paper.

Keywords： karst base     pressure grouting     evaluation of effect    

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Characterization of soil low-molecular-weight organic acids in the Karst rocky desertification region

Xiaoliang LI, Xiaomin CHEN, Xia LIU, Lianchuan ZHOU, Xinqiang YANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 195-203 doi: 10.1007/s11783-012-0391-1

Abstract: LMW) organic acids play important roles in the soil-forming process and the cycling of nutrients in Karstorganic acids (including lactate, acetate, formate, malate, and oxalate) in soil solution over the Karstwere significantly positively correlated with inorganic anions (chlorides, nitrates, and sulfates) in KarstTherefore, the concentrations of soil LMW organic acids might be one of driving force in the Karst rock

Keywords： Karst rocky desertification     low-molecular-weight (LMW) organic acids     distribution characteristics     soil    

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Large-scale model test study on the water pressure resistance of construction joints of karst tunnel

Frontiers of Structural and Civil Engineering   Pages 1249-1263 doi: 10.1007/s11709-023-0974-x

Abstract: investigate the water pressure resistance of lining construction joints in high-pressure and water-rich karst

Keywords： karst tunnel     lining construction joint     water pressure resistance     large-scale model test     numerical    

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Risk management of Karst tunnel of Yichang-Wanzhou Railway

Zhu Pengfei

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 20-25

Abstract: All of these can provide experiences for other karst tunnel's risk management.

Keywords： Karst tunnel     risk management     measures for risks    

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Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 393-397 doi: 10.1007/s11709-012-0174-6

Abstract: In this paper, a physical base friction test model of a slope is established.the slope in both its natural state and during excavation loading is qualitatively analyzed through baseThe base friction test results are then subjected to comparison and analysis using finite element numerical

Keywords： base friction test     slope stability evaluation     bridge slope    

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Treatment techniques for Karst disaster of Maluqing Tunnel on Yichang-Wanzhou Railway

Yang Bing,Xiao Gangzhi

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 69-76

Abstract:

Karst disaster is badly endangering the safety of tunnel constructionintroduced separately; what is more, disclosure progress and the status after disclosing of the +978 KarstFinally, curtain grouting technology for stratum consolidation and pile-cap technology for spanning karstcave after the +978 Karst Cave disclosed are introduced too.for karst cave with large quantity water during the similar tunnel construction in the future.

Keywords： tunnel     Karst water burst     advanced geological forecast     curtain grouting    

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The Karst development characteristics and countermeasure of Yunwushan Tunnel

Xue Bin, Zhang Minqing

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 61-68

Abstract:

The revealed karst, karst features and treatment measures are describedin detail, and different types of karst-specific countermeasures are put up.The by-pass schedule pertaining to large-scale karst cavities during construction is put up, and relativelyAll these can provide reference for the construction of the long karst tunnels.

Keywords： Yunwushan Tunnel     Karst     development characteristics     countermeasure    

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Research of water distribution of tunnel lining in Karst region

Tan Zhongsheng,Li Jian,Xue Bin,Wan Xiuying

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 87-92

Abstract: Relying on Yichang-Wanzhou Railway karst tunnels to research on distribution of linning water pressure

Keywords： tunnel in Karst region     whole block     controlled drainage     water pressure     model test    

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Study on construction mechanical behavior of silt filled karst cave tunne

Miao Dehai ,Mo Yangchun,Wang Wei,Chen Tao

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 41-46

Abstract:

When tunnel is constructed in karst cave zone, all kinds of filled caverns

Keywords： tunnelling engineering     silt filled Karst cave     mechanical behavior     numerical simulation    

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Combined prevention and treatment technology on water disaster in complex karst tunnel of Yichang-Wanzhou

Ma Dong

Strategic Study of CAE 2010, Volume 12, Issue 8,   Pages 94-98

Abstract:

Based on Dazhiping Tunnel that is one of the eight complex karst tunnels

Keywords： Yichang-Wanzhou Railway     complex karst tunnel     water disaster     prevention technology    

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Numerical study on the process of water inrush in Karst caves with hydraulic pressure caused by tunnel

Huang Mingli,Wang Fei,Lu Wei,Tan Zhongsheng

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 93-96

Abstract:

Water inrush is often encountered during tunnel excavation in karst regionSo it is of important significance to study the mechanism of water inrush for the prevention of Karstmechanism of water flush and surrounding rock failure caused by gradually increasing hydraulic stress in Karstcaves, and it can provide reliable reference for prevention of Karst disasters.

Keywords： water flush in Karst caves     tunnel excavation     mechanical mechanism     numerical simulation    

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Treatment techniques for +990 Karst ofDazhiping Tunnel of Yichang-Wanzhou Railway

Ma Dong,Li Gengxu

Strategic Study of CAE 2009, Volume 11, Issue 12,   Pages 53-60

Abstract: text-align: justify;">This paper mainly introduced Yichang-Wanzhou Railway Dazhiping Tunnel DK133+990 karstexcrescent body's hydrogeology characteristics, karst development scale, water inrush and mud burstAccording to karst cave project, hydrogeology condition and water inrush and mud burst mechanisms, cave

Keywords： Karst tunnel     engineering and hydrogeology     water inrush and mud burst     comprehensive processing    

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Study on the Mechanism and Cause Mode of the Karst Collapse——Taking Tai’an-Laiwu for Example

Gao Zongjun

Strategic Study of CAE 2008, Volume 10, Issue 4,   Pages 38-43

Abstract:

The fearful karst collapses have been produced in succession since 1970sby the exploitation of karst water in the area of Tai'an-Laiwu, Shandong province.The limestone buried by Quaternary System grows into karst caves, and karst collapse brings enormousThe spatio-temporal distributing characteristics of karst collapse are summed up in detail.The cause mode of the karst collapse aiming at the existing questions is discussed and the idea for karst

Keywords： Tai’an-Laiwu     karst collaps     spatio-temporal distributing characteristics     forming mechanism     cause mode    

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Base editors: development and applications in biomedicine

Frontiers of Medicine 2023, Volume 17, Issue 3,   Pages 359-387 doi: 10.1007/s11684-023-1013-y

Abstract: Base editor (BE) is a gene-editing tool developed by combining the CRISPR/Cas system with an individualdeaminase, enabling precise single-base substitution in DNA or RNA without generating a DNA double-strandBase editors offer more precise and secure genome-editing effects than other conventional artificialSince the development of the two main base editors, cytosine base editors (CBEs) and adenine base editorsHere, we review the recent development of base editors, summarize their applications in the biomedical

Keywords： base editing     CBE     ABE     ADAR     DdCBE     disease model     therapeutic application    

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Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 764-773 doi: 10.1007/s11705-021-2114-2

Abstract: However, the low concentration of base generated from a traditional BMED process may limit the viabilityreport an especially designed multistage-batch (two/three-stage-batch) BMED process to increase the baseconcentration by adjusting different volume ratios in the acid (Vacid), base (Vbase), and salt compartments (Vsalt).–1, which was higher than the most reported base production by BMED.

Keywords： bipolar membrane electrodialysis     multistage-batch     base production     high-salinity wastewater    

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Title Author Date Type Operation

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

Characterization of soil low-molecular-weight organic acids in the Karst rocky desertification region

Xiaoliang LI, Xiaomin CHEN, Xia LIU, Lianchuan ZHOU, Xinqiang YANG

Journal Article

Large-scale model test study on the water pressure resistance of construction joints of karst tunnel

Journal Article

Risk management of Karst tunnel of Yichang-Wanzhou Railway

Zhu Pengfei

Journal Article

Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Journal Article

Treatment techniques for Karst disaster of Maluqing Tunnel on Yichang-Wanzhou Railway

Yang Bing,Xiao Gangzhi

Journal Article

The Karst development characteristics and countermeasure of Yunwushan Tunnel

Xue Bin, Zhang Minqing

Journal Article

Research of water distribution of tunnel lining in Karst region

Tan Zhongsheng,Li Jian,Xue Bin,Wan Xiuying

Journal Article

Study on construction mechanical behavior of silt filled karst cave tunne

Miao Dehai ,Mo Yangchun,Wang Wei,Chen Tao

Journal Article

Combined prevention and treatment technology on water disaster in complex karst tunnel of Yichang-Wanzhou

Ma Dong

Journal Article

Numerical study on the process of water inrush in Karst caves with hydraulic pressure caused by tunnel

Huang Mingli,Wang Fei,Lu Wei,Tan Zhongsheng

Journal Article

Treatment techniques for +990 Karst ofDazhiping Tunnel of Yichang-Wanzhou Railway

Ma Dong,Li Gengxu

Journal Article

Study on the Mechanism and Cause Mode of the Karst Collapse——Taking Tai’an-Laiwu for Example

Gao Zongjun

Journal Article

Base editors: development and applications in biomedicine

Journal Article

Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

Journal Article