摘要
中国是灾害多发的国家之一,泥石流是山区灾害的主要类型。对于特大泥石流,传统常规的治理办法难以起到很好的效果,于是王兆印等提出了梯-潭系统。但是,梯-潭系统并不完美,仍有许多值得改进的地方。以提高消能效率为出发点,提出一种能在短距离内达到消能、控速功能的挡流式泥石流排导槽。通过设计最佳横断面,使排导能力达到最佳;通过挡板与梯-潭系统达到快速消能的目的;然后通过推导分析,给出了挡流式排导槽的消能率计算公式;最后与传统梯-潭型排导槽消能率计算公式作对比分析,发现提出的排导槽具有高效消能的作用。
China is one of the countries where disasters occur frequently.Debris flow is one of the main types of mountain disasters.For large debris flows,the traditional treatment methods were difficult to have a good effect,thus Wang zhaoyin put forward step-pool system.But the step-pool system was not perfect,there were still much worthy of improvement.Taking the improvement of the energy dissipation efficiency as the starting point,a kind of the debris flow drainage channel with block flow type was put forward,which can help to achieve the purpose of energy dissipation and slow the speed of debris flow in a short distance.The best guide ability was achieved by available hydraulic optimum section,and the power was dismissed rapidly by baffle and step-pool system.Then,energy dissipation ratio for blocking-flow-type guide groove was obtained.After comparing that with energy dissipation ratio formula of the traditional step-pool type guide groove,the guide groove mentioned was found to have the function of high energy dissipation.
作者
屈新
阎利
闫春岭
QU Xin;YAN Li;YAN Chun-ling(School of Civil and Architecture Engineering,Anyang Institute of Technology,Anyang 455000,China;Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China)
出处
《科学技术与工程》
北大核心
2018年第18期257-262,共6页
Science Technology and Engineering
基金
安阳工学院2018年度博士科研启动基金(BSJ2018009)资助
关键词
泥石流
排导槽
梯-潭系统
消能
水力最佳断面
debris flow
drainage channel
step-pool system
energy dissipation
hydraulic optimum section
