汶马高速桑坪隧道进口危岩落石防治措施研究

Study on Prevention and Control of Rockfall at the Entrance of Sanping at Wenma Expressway

危岩落石是汶马高速公路主要地质灾害之一,勘察难度大,防治困难,给建设施工和营运造成了较大的安全隐患。论文以汶马高速桑坪隧道进口危岩为例,对危岩的特征、危害程度等进行分析,并对其防治措施进行研究,对常规的明洞结构进行了改善,在此基础上提出一种复杂山区桥隧连接结构,使其适用于复杂艰险山区桥隧相接段危岩落石防治,并对这种组合结构的稳定性进行了数值模拟计算,可为类似工程提供有益的参考。

Dangerous rock falling stone is one of the main geological disasters of Wen Ma Expressway,with difficult investigation and control difficulties,which causes great safety risks to the construction and operation.Taking the dangerous rock of WenMa Expressway as an example,we analyze the characteristics and hazard degree of dangerous rock,and improve the conventional open tunnel structure.Moreover,a complex mountain bridge and tunnel connection structure is suitable for the control of dangerous rock and simulate the stability of the combined structure to provide useful reference for similar projects.