高速远程滑坡气垫效应的风洞模拟试验研究  

Study on the Wind Tunnel Testing of Air Cushion Effect of High-Speed and Long-Runout Landslide

作　　者：邢爱国[1] 殷跃平[2] 齐超[1] 张明[3] 黄汉杰[4] 韩金良[3] 

机构地区：[1]上海交通大学土木工程系,上海200240 [2]中国地质调查局,北京100011 [3]中国地质科学院地质力学研究所,北京100081 [4]中国空气动力研究与发展中心,绵阳621000

出　　处：《上海交通大学学报》2012年第10期1642-1646,共5页Journal of Shanghai Jiaotong University

基　　金：国家科技支撑计划项目(2006BAC04B02);国家自然科学基金资助项目(40602035;41272382);国土资源大调查计划项目(1212011014032);上海市重点学科建设资助项目(B208)

摘　　要：将木质材料制成不同坡度、不同横断面形式的沟谷地形,通过大型风洞模拟试验,测定了地面效应影响下滑体凌空飞行时的空气动力学参数.风洞试验结果表明:沟谷地形对地面效应影响显著.地形圈闭效果越好,地面效应越明显,模型升力系数相对于平坦地形将成倍增加;模型离地高度越小,气垫效应越显著,但对平坦地形影响不明显;各沟谷地形下升阻比曲线变化基本相同,最大值均发生在飞行迎角8°左右.Many high-speed and long-runout landslides could fly in the air at the start-range stage,which has a significant effect of aero-dynamics.A wing model which is similar to sliding mass and a wing tunnel testing are made to determine the influence of aerodynamic effect and aerodynamic parameters.In the testing,valley terrain with different slopes and cross-sections can be made of wooden material.The results of wind tunnel testing show that aerodynamic properties of high-speed landslide are significant by the air cushion effect.Because of the different valley terrain,lift coefficient will dramatically increase when the around mountains get to closer.Therefore,vertical lift of high-speed sliding mass is increased,but it＇s not obvious in flat terrain.The variations of lift-drag ratio in different valley terrains are basically the same,and the maximum values happen when angles of attack equal to 8°.

关 键 词：高速滑坡 空气动力学效应 气垫效应 风洞试验 

分 类 号：P642.22[天文地球—工程地质学]