怀柔区毡帽峪泥石流灾害动力学参数研究

Study on dynamic parameters of debris flow disaster in zhanmaoyu,Huairou District

为了解决泥石流防治工程中动力学参数定量选取问题,以怀柔区毡帽峪泥石流为研究对象,在收集分析已有资料及野外勘查的基础上,对泥石流的基本特征及动力学参数进行了研究,为防治工程设计提供了定量数据。结果表明,毡帽峪泥石流的流体重度为1.724 t/m^( 3),峰值流量255.76 m^( 3)/s,流速4.32 m/s,一次泥石流过程总量5.2×10^(4) m^( 3),一次泥石流固体物质2.3×10^(4) m^( 3);泥石流整体冲击力为43.65 kPa,爬高为1.52 m,最大冲起高度为0.95 m,弯道超高为0.18 m。研究成果可为同类泥石流防治工程的设计提供动力学参数参考和应用案例。

In order to solve the problem of quantitative selection of dynamic parameters in debris flow prevention and control engineering,taking Zhanmaoyu debris flow in Huairou District as the research object,based on the collection and analysis of existing data and field exploration,the basic characteristics and dynamic parameters of debris flow are studied,which provides quantitative data for prevention and control engineering design.The research results show that:the fluid gravity of Zhanmaoyu debris flow is 1.724 t/m^( 3),the peak flow of debris flow is 255.76 m^( 3)/s,the velocity of debris flow is 4.32 m/s,the total amount of one debris flow process is 5.2×10^(4) m^( 3),the solid matter of one debris flow is 2.3×10^(4) m^( 3),the overall impact force of debris flow is 43.65 kPa,the run-up height of debris flow is 1.52 m,the maximum run-up height is 0.95 m,and the superelevation of debris flow curve is 0.18 m.The research results can provide dynamic parameters reference and application cases for the design of similar debris flow control projects.