泥石流与公路路基相互作用的耦合数值仿真

Numerical coupling simulation for interaction of mud-rock flow and highway subgrade

泥石流是天山公路的主要地质灾害之一。基于泥石流损毁路段的调查,结合泥石流对公路路基的冲蚀以及泥石流体本身的运动特性,建立了新疆天山公路泥石流路基耦合数学方程和物理模型,通过数值仿真软件,对泥石流与防治结构之间的耦合作用进行仿真分析。结果表明:耦合作用受到泥石流规模的制约;路基最易破坏位置为泥石流直接冲击位置。

The mud-rock flow is the main geological disasters to the highway at Tianshan area.Through the investigation of damaged road segment by mud-rock flow, the characteristics of mud-rock flow and the interaction of mud-rock flow with highway subgrade are analyzed, the numerical coupling model of the interaction is developed, the coupling interaction of mud-rock flow and prevention structure is simulated by numerical simulating software. The results show that the coupling interaction is restricted by the scale of mud-rock flow, and the most likely location of the damaged suhgrade is the section that is directly faced the mud-rock flow. 1 tab, 12 figs, 5 refs.