隧道建设
隧道建設
수도건설
TUNNEL CONSTRUCTION
2012年
2期
150-155
,共6页
浅埋偏压隧道%渐进破坏%模型试验
淺埋偏壓隧道%漸進破壞%模型試驗
천매편압수도%점진파배%모형시험
asymmetrically-loaded tunnel under shallow cover%progressive failure%model test
为了研究浅埋偏压隧道围岩的渐进破坏过程和破坏模式,为隧道支护参数的确定提供依据。运用自行研制的隧道模型试验装置,对浅埋偏压工况下单洞及小净距隧道的破坏过程和破坏模式进行研究。研究表明：浅埋偏压隧道的破坏模式可以看作岩体在重力作用下的坍塌破坏,且浅埋偏压隧道的偏压角度和围岩的力学参数决定了破坏体的规模和范围,破坏体的范围主要受偏压角度的影响。
為瞭研究淺埋偏壓隧道圍巖的漸進破壞過程和破壞模式,為隧道支護參數的確定提供依據。運用自行研製的隧道模型試驗裝置,對淺埋偏壓工況下單洞及小淨距隧道的破壞過程和破壞模式進行研究。研究錶明：淺埋偏壓隧道的破壞模式可以看作巖體在重力作用下的坍塌破壞,且淺埋偏壓隧道的偏壓角度和圍巖的力學參數決定瞭破壞體的規模和範圍,破壞體的範圍主要受偏壓角度的影響。
위료연구천매편압수도위암적점진파배과정화파배모식,위수도지호삼수적학정제공의거。운용자행연제적수도모형시험장치,대천매편압공황하단동급소정거수도적파배과정화파배모식진행연구。연구표명：천매편압수도적파배모식가이간작암체재중력작용하적담탑파배,차천매편압수도적편압각도화위암적역학삼수결정료파배체적규모화범위,파배체적범위주요수편압각도적영향。
The failure process and failure modes of shallow-covered and asymmetrically-loaded single-tube tunnels or shallow-covered and asymmetrically-loaded tunnels with small net spacing are studied by means of self-developed tunnel model testing facilities.The study results show that the failure of shallow-covered and asymmetrically-loaded tunnels can be regarded as the collapse failure under the action of gravity,the scale and scope of the failure depend on the asymmetrical loading angle of the shallow-covered and asymmetrically-loaded tunnel and depend on the mechanical parameters of the rock mass,with the scope of the failure mainly depending on the asymmetrical loading angle.
