摘要
偏压小净距隧道是一种较新的隧道形式,受力状况较为复杂,目前尚没有其围岩压力的理论计算方法。为此作者对偏压小净距隧道围岩压力进行了理论探讨,得出了滑动破裂角、侧压力系数及垂直围岩压力的理论计算公式。分析了隧道间的净距对围岩压力的影响以及地面倾斜角度和净间距对隧道内侧压力系数的影响,可为类似隧道的设计提供参考。
Neibourhood tunnel under unsymmetrical pressure is a new tunnel mode whose loading status is complex and there are no theoretical formulas for it yet. A theoretical study on the surrounding rock pressure is carried out and the theoretical formulas of slip - crack break angle, lateral coefficient of pressure and vertical surrounding rock pressure are obtainedo The influence of distance between tunnels on surrounding rock pressure and slope angle of ground and distance on the choice of tunnel calculation modes are analyzed, which can be referred to by the designer of similar tunnels.
出处
《地下空间与工程学报》
CSCD
2007年第3期430-433,共4页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金(No.50504011)
关键词
倾斜地表
小净距隧道
偏压
围岩压力
slope ground
neighbourhood tunnel
unsymmetrical pressure
surrounding rock pressure
