现代隧道技术
現代隧道技術
현대수도기술
Modern Tunnelling Technology
2015年
4期
24-31,40
,共9页
李新宇%张顶立%房倩%宋浩然
李新宇%張頂立%房倩%宋浩然
리신우%장정립%방천%송호연
越江跨海隧道%地质条件%水文条件%突水模式
越江跨海隧道%地質條件%水文條件%突水模式
월강과해수도%지질조건%수문조건%돌수모식
Underwater tunnels%Geological conditions%Hydrological conditions%Water burst patterns
突水是越江跨海隧道修建过程中面临的主要安全风险,是区域地质条件、水文条件与施工扰动综合作用的结果,其发生需要具备水源和导水通道两方面的条件,且受不良地质的影响显著。文章通过对国内外典型隧道突水事故的研究分析,将越江跨海隧道的突水模式归纳为水力劈裂型突水、渗透型突水、界面张开型突水和整体破坏型突水四种模式,并指出了与每种突水模式相适应的地质条件和水文条件。基于该项研究,根据地质勘探获得的地质资料和水文资料对南京纬三路越江隧道工程进行工前突水预测。通过在施工中对突水风险位置采取相应的防治措施,全线没有发生突水灾害。
突水是越江跨海隧道脩建過程中麵臨的主要安全風險,是區域地質條件、水文條件與施工擾動綜閤作用的結果,其髮生需要具備水源和導水通道兩方麵的條件,且受不良地質的影響顯著。文章通過對國內外典型隧道突水事故的研究分析,將越江跨海隧道的突水模式歸納為水力劈裂型突水、滲透型突水、界麵張開型突水和整體破壞型突水四種模式,併指齣瞭與每種突水模式相適應的地質條件和水文條件。基于該項研究,根據地質勘探穫得的地質資料和水文資料對南京緯三路越江隧道工程進行工前突水預測。通過在施工中對突水風險位置採取相應的防治措施,全線沒有髮生突水災害。
돌수시월강과해수도수건과정중면림적주요안전풍험,시구역지질조건、수문조건여시공우동종합작용적결과,기발생수요구비수원화도수통도량방면적조건,차수불량지질적영향현저。문장통과대국내외전형수도돌수사고적연구분석,장월강과해수도적돌수모식귀납위수력벽렬형돌수、삼투형돌수、계면장개형돌수화정체파배형돌수사충모식,병지출료여매충돌수모식상괄응적지질조건화수문조건。기우해항연구,근거지질감탐획득적지질자료화수문자료대남경위삼로월강수도공정진행공전돌수예측。통과재시공중대돌수풍험위치채취상응적방치조시,전선몰유발생돌수재해。
Water bursts, the result of the combined effects of regional geological conditions, hydrological conditions and construction disturbances, are the main risk during construction of underwater tunnels. Their occurrence is based on the source and channel of the water and is affected significantly by unfavorable geology. In this paper, typical water-burst cases both at home and abroad are analyzed, and four patterns for water burst are concluded: a hydraulic fracture pattern, a seepage failure pattern, an interface opening pattern and a rock failure pattern. Corresponding geological and hydrological conditions are presented as well. Using the Nanjing Weisan Road river-crossing tunnel as an example and utilizing the acquired geological and hydrological information, a water burst prediction is carried out and relevant measures are taken accordingly, thus preventing a water-burst disaster during tunnel construction.