CAJ | 학술논문

隧道开挖面的空间效应对选择合理的支护时机十分重要。本文利用位移释放系数来确定隧道前期变形，提出了考虑开挖面空间效应的隧道支护设计新方法，给出了其具体应用步骤，并得出因素影响特性。研究结果表明：中间主应力、围岩剪胀特性及不同施作距离对支护的起始作用位置及围岩稳定变形均有显著影响，但支护压力间的差异却相对较小，因而隧道支护设计既要依据支护压力，还要保证对围岩变形的有效限制作用。
수도개알면적공간효응대선택합리적지호시궤십분중요。본문이용위이석방계수래학정수도전기변형，제출료고필개알면공간효응적수도지호설계신방법，급출료기구체응용보취，병득출인소영향특성。연구결과표명：중간주응력、위암전창특성급불동시작거리대지호적기시작용위치급위암은정변형균유현저영향，단지호압력간적차이각상대교소，인이수도지호설계기요의거지호압력，환요보증대위암변형적유효한제작용。
T he spatial effect of tunnel excavation face is very important for choosing a reasonable support time. A new design method of tunnel support considering spatial effect of excavation face was introduced by utilizing displacement release coefficient to determine the tunnel deformation of earlier stage,specific application procedures were proposed, and factor influence characteristic was concluded in this paper. T he research results showed that the intermediate principal stress,surrounding rock dilatancy and support distance has a significant effect on initial location of support and stable deformation of the surrounding rock,and the difference among support pressures is relatively small,which means the tunnel support design should not only consider the support pressure but also ensure the effective restrict of surrounding rock deformation.