摘要
为了探究砾石覆盖条件下高寒土坡面细沟侵蚀特征,通过室内水槽模拟冲刷试验,研究不同坡度和流速条件下细沟侵蚀的特征。采用长为8 m的土槽,在4个流量和6个砾石覆盖度条件下进行冲刷试验研究,结果表明:砾石覆盖下细沟侵蚀的输沙率与砾石覆盖度呈先增后减的抛物线趋势;产流时间随着坡度的增加而减少;在相同流速与砾石覆盖度条件下,坡度越大,产流时间和产沙率越大,相应的产流量和产沙量也越大。
In order to explore the rill erosion characteristics of gravel cover on alpine soil slopes, the characteristics of rill erosion under different slopes and velocities were studied through indoor flume simulation erosion tests. An 8 m long soil trough was used to carry out a scour test study under the conditions of 4 flows and 6 gravel coverage. The results showed that: the sand transport rate and gravel coverage of rill erosion under gravel coverage showed a parabolic trend of increasing first and then decreasing;the runoff time decreases as the slope increases;under the same flow velocity and gravel coverage conditions, the greater the slope, the greater the runoff time and sediment yield. The corresponding land flow and sediment yield are also greater.
作者
丁宇浩
黄莎琳
王君惠
邓翔尹
万丹
DING Yuhao;HUANG Shalin;WANG Junhui;DENG Xiangyin;WAN Dan(College of Resources and Environment,Tibet University of Agriculture and Animal Husbandry,Linzhi Tibet 860000;Tibet College of Agriculture and Animal Husbandry Research Center for Alpine Soil and Water Conservation,Linzhi Tibet 860000)
出处
《河南科技》
2021年第26期130-133,共4页
Henan Science and Technology
基金
国家自然科学基金地区基金(3206140378)
国家自然科学基金地区基金项目(41661061)
西藏农牧学院农业资源与环境学科建设开放课题-研创项目(533320003)。
关键词
砾石覆盖
产流
产沙率
gravel cover
runoff
sand yield rate
