摘要
软基消能泥石流排导槽是泥石流工程治理的主要措施之一,其肋槛基础埋置深度的确定是排导槽安全运行的关键问题。目前,肋槛基础埋深主要依据设计者的经验来确定。文章利用高含沙两相流理论,基于冲刷和淤积平衡下假设泥石流在槽中保持恒定运动,通过能量分配分析,推导出软基消能泥石流排导槽的肋槛槛下冲刷深度和基础埋深。为了使用方便,针对不同类型的泥石流、典型设计排导槽纵比降,推导出软基消能型泥石流排导槽的肋槛基础埋深设计值。
The drainage groove with soft foundation is widely used in controlling debris flow. The buried depth of the transverse sill,which is usually emplaced in the groove,is crucial for the safety of the groove under the strong scouring and silting actions of debris flow. The buried depth is often estimated by personal experience. This paper derives a formula under the assumption that debris flow keeps steady when the scouring is balanced by the silting. And the calculated values are given for grooves under different designing conditions.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第10期1590-1593,1605,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家重点基础研究发展计划"973"计划资助项目(2008CB425802)
中科院知识创新重要方向性资助项目(KZCX2-YW-302)
关键词
泥石流
软基
肋槛
埋深
debris flow
soft foundation
transverse sill
buried depth
