官坝河泥石流含沙量变化过程数值模拟  

Simulation of the Change Process of Sediment Concentration of Debris Flow in the Guanbariver

作　　者：李俊 陈宁生 赵苑迪 

机构地区：[1]四川理工学院土木工程学院,四川自贡643000 [2]中国科学院大学水利部成都山地灾害与环境研究所,成都610041

出　　处：《四川理工学院学报（自然科学版）》2017年第6期71-75,共5页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：国家自然科学基金(41661134012);四川省安全生产科技项目(aj20170601105926)

摘　　要：泥石流输沙规律是科学布置泥石流防治工程的基础。基于Euler模型模拟了1998年7月6日官坝河泥石流含沙量变化过程。研究结果有两点:(1)泥石流输沙运动中含沙量大小和沟道宽度成正比关系。(2)泥石流在沟道地形较陡的地区携带泥沙能力强,在地形较缓的地区携带泥沙能力较弱。研究成果有助于科学布置官坝河泥石流防治工程,也为解决邛海泥沙淤积问题提供更多的科学依据。The change process of sediment concentration is the basis for arranging debris flow prevention and control pro-ject scientifically. The sediment concentration cannot be obtained from field investigation. Therefore, using simulation method of Euler model,the process of sediment concentration of debris flow in Guanbariver on July 6th 1998 is simulated. The result- sare shown as follows. Firstly,sediment concentration of debris flow is proportional to valley width in Guangbariver. Secondly, the debris flow has strong carrying capacity of sediment in areas with steep topography, and has less carrying capacity of sedi-ment in areas with slower topography. The research results are helpful to the scientific arrangement of debris flow preventionproject in Guanbariver, and also solve the problem of sediment deposition in Qionghai Lake.

关 键 词：西昌市官坝河 泥石流 输沙过程 EULER方程 

分 类 号：X43[环境科学与工程—灾害防治]