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    Ground Response to Horizontal Spoil Discharge Jet Grouting with Impacts on the Existing Tunnels

    Source: Journal of Geotechnical and Geoenvironmental Engineering:;2020:;Volume ( 146 ):;issue: 007
    Author:
    Huai-Na Wu
    ,
    Pin Zhang
    ,
    Ren-Peng Chen
    ,
    Xing-Tao Lin
    ,
    Yuan Liu
    DOI: 10.1061/(ASCE)GT.1943-5606.0002287
    Publisher: ASCE
    Abstract: This study presents an application of horizontal spoil discharge jet-grouting (SDJG) columns in soil improvement between the new undercrossing tunnels and the existing tunnels in Changsha, China. To investigate the impact of SDJG construction on the ground and the existing tunnels, the ground pore-water pressure, induced hoop strain, vertical displacement, and rotation of the existing tunnel were monitored. The results indicate that SDJG columns were generally well constructed with an average unconfined compressive strength exceeding 3.50 MPa. Because of the quick discharge of spoils, there was only a slight increase in ground pressure and deformation of existing tunnels during the installation of SDJG columns. The influential range of the SDJG method is much smaller than that caused by pile driving and horizontal twin-jet grouting, and it is similar to that caused by wet deep mixing. SDJG is recommended to improve the area in which adjacent sensitive structures and infrastructures exist because of its reliable effect and minor disturbance to the surrounding ground.
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      Ground Response to Horizontal Spoil Discharge Jet Grouting with Impacts on the Existing Tunnels

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4268896
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    • Journal of Geotechnical and Geoenvironmental Engineering

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    contributor authorHuai-Na Wu
    contributor authorPin Zhang
    contributor authorRen-Peng Chen
    contributor authorXing-Tao Lin
    contributor authorYuan Liu
    date accessioned2022-01-30T21:49:11Z
    date available2022-01-30T21:49:11Z
    date issued7/1/2020 12:00:00 AM
    identifier other%28ASCE%29GT.1943-5606.0002287.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4268896
    description abstractThis study presents an application of horizontal spoil discharge jet-grouting (SDJG) columns in soil improvement between the new undercrossing tunnels and the existing tunnels in Changsha, China. To investigate the impact of SDJG construction on the ground and the existing tunnels, the ground pore-water pressure, induced hoop strain, vertical displacement, and rotation of the existing tunnel were monitored. The results indicate that SDJG columns were generally well constructed with an average unconfined compressive strength exceeding 3.50 MPa. Because of the quick discharge of spoils, there was only a slight increase in ground pressure and deformation of existing tunnels during the installation of SDJG columns. The influential range of the SDJG method is much smaller than that caused by pile driving and horizontal twin-jet grouting, and it is similar to that caused by wet deep mixing. SDJG is recommended to improve the area in which adjacent sensitive structures and infrastructures exist because of its reliable effect and minor disturbance to the surrounding ground.
    publisherASCE
    titleGround Response to Horizontal Spoil Discharge Jet Grouting with Impacts on the Existing Tunnels
    typeJournal Paper
    journal volume146
    journal issue7
    journal titleJournal of Geotechnical and Geoenvironmental Engineering
    identifier doi10.1061/(ASCE)GT.1943-5606.0002287
    page14
    treeJournal of Geotechnical and Geoenvironmental Engineering:;2020:;Volume ( 146 ):;issue: 007
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian