浅埋偏压隧道荷载特征的影响因素分析与计算

Theoretical analysis of load characteristics of shallow buried bias tunnels

浅埋偏压隧道结构荷载计算的准确与否是影响隧道建设成败的重要因素之一。结合浅埋偏压隧道围岩荷载计算理论,对依托的具体实体工程进行多因素影响分析,揭示浅埋偏压隧道在不同偏压角和不同覆土层厚度下围岩垂直压力、侧向压力、侧压力系数和破裂角的变化规律,为隧道施工提供技术支持。

The accuracy calculation of the structural load calculation of shallow buried bias tunnel is one of the important factors that affect the tunnel＇s construction.Based on a real case and combined with the rock load cal-culation theory of shallow bias tunnel,this paper anaygzed the shollow tunnel in different bias angle and the thickness of the over burden soil layer.The vertical surrounding rock pressure,later pressure and its coefficient and the repture angle changes was then calculated.This paper will provide technical support for the coustruction of the tunnel.