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    Behavior of Pressure Tunnels and Guidelines for Liner Design

    Source: Journal of Geotechnical Engineering:;1994:;Volume ( 120 ):;issue: 010
    Author:
    Gabriel Fernández
    DOI: 10.1061/(ASCE)0733-9410(1994)120:10(1768)
    Publisher: American Society of Civil Engineers
    Abstract: Numerous cases of pressure‐tunnel failures have occurred in recently commissioned projects. The cost of the remedial measures, particularly the lost revenue during the time taken for the implementation of these measures, is significant. This paper presents a framework to identify and evaluate the variables that control tunnel behavior and thus determine the key decisions made in the design of a pressure tunnel. An approach is also given for incorporating the hydraulic and mechanical liner‐ground interaction in the evaluation of the water tightness of various types of liners under operating conditions as well as for evaluating the capability of these liners to control the pore‐water pressure in the surrounding rock mass. This approach also permits an evaluation of potential benefits derived from consolidation grouting of the rock mass surrounding the tunnel. Finally, specific liner design recommendations and guidelines are given to accommodate a wide combination of rock mass characteristics, topography, ground‐water levels, and operating conditions.
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      Behavior of Pressure Tunnels and Guidelines for Liner Design

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    http://yetl.yabesh.ir/yetl1/handle/yetl/21335
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    contributor authorGabriel Fernández
    date accessioned2017-05-08T20:37:04Z
    date available2017-05-08T20:37:04Z
    date copyrightOctober 1994
    date issued1994
    identifier other%28asce%290733-9410%281994%29120%3A10%281768%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/21335
    description abstractNumerous cases of pressure‐tunnel failures have occurred in recently commissioned projects. The cost of the remedial measures, particularly the lost revenue during the time taken for the implementation of these measures, is significant. This paper presents a framework to identify and evaluate the variables that control tunnel behavior and thus determine the key decisions made in the design of a pressure tunnel. An approach is also given for incorporating the hydraulic and mechanical liner‐ground interaction in the evaluation of the water tightness of various types of liners under operating conditions as well as for evaluating the capability of these liners to control the pore‐water pressure in the surrounding rock mass. This approach also permits an evaluation of potential benefits derived from consolidation grouting of the rock mass surrounding the tunnel. Finally, specific liner design recommendations and guidelines are given to accommodate a wide combination of rock mass characteristics, topography, ground‐water levels, and operating conditions.
    publisherAmerican Society of Civil Engineers
    titleBehavior of Pressure Tunnels and Guidelines for Liner Design
    typeJournal Paper
    journal volume120
    journal issue10
    journal titleJournal of Geotechnical Engineering
    identifier doi10.1061/(ASCE)0733-9410(1994)120:10(1768)
    treeJournal of Geotechnical Engineering:;1994:;Volume ( 120 ):;issue: 010
    contenttypeFulltext
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