无芒雀麦草皮护坡抗水流侵蚀试验研究  

Experimental study on anti-water erosion of Bromus inermis Leyss turf

作　　者：田振华 韩雷 狄高健 李洋 TIAN Zhenhua;HAN Lei;DI Gaojian;LI yang(Heilongjiang Province Hydraulic Research Institute, Harbin 150080,China)

机构地区：[1]黑龙江省水利科学研究院,黑龙江哈尔滨150080

出　　处：《水利科学与寒区工程》2021年第6期12-15,共4页Hydro Science And Cold Zone Engineering

基　　金：黑龙江省自然科学基金项目(LH2019E123)。

摘　　要：为了分析无芒雀麦草皮护坡的抗水流侵蚀特性,基于床面切应力对植被曳引作用是造成草皮护坡破坏的直接原因的原理,设计了一套流速范围在1.5~6.0 m/s的装配式恒定有压流冲刷装置。采用此试验装置,得出了无芒雀麦草皮护坡在连续稳定水流冲刷作用下发生侵蚀破坏的关键水力学参数,无芒雀麦草皮的曼宁糙率系数为0.019,最大抗冲流速可达5.0 m/s,其破坏等级为Ⅱ级。A set of assembled constant pressure-current scouring device with flow rate ranging from 1.5 to 6.0 m/s was designed in order to analyze the characteristics of anti-water erosion of Bromus inermis Leyss turf,which based on the principle that the traction effect of shear stress on vegetation was the direct cause of the damage of turf slope protection.The key hydraulic parameters for erosion damage of Bromus inermis Leyss turf slope protection under the continuous steady water scouring were measured by using this experimental device.The manning roughness coefficient was 0.019 and the maximum impact velocity can reach 5.0 m/s under the test conditions described in this paper,and its damage grade was GradeⅡ.

关 键 词：草皮护坡 无芒雀麦 水流冲刷 侵蚀破坏 

分 类 号：TV131.3[水利工程—水力学及河流动力学]