IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleEffects of Grass Belt Length to Runoff Hydrodynamic Properties in Gully Beds in Jinsha River Dry-hot Valley Region
杨丹; 熊东红; 张素; 张宝军; 郑学用; 苏正安; 史亮涛
Corresponding Author熊东红
Source Publication水土保持学报
Other Abstract



Studying on the influence of grass belt to runoff hydrodynamic properties was of great importance to verify the development processes and dynamic mechanism of gullies.Based on filed scouring experiment under different grass belt length,the effects of grass belt to runoff pattern,velocity,and resistance were coefficient.The results indicated that: (1) Runoff was turbulent and subcritical in the gully beds from the beginning to end of the tests.The Re performed as cyclical variations,which firstly increased and then decreased with test time. The Fr decreased sharply first and then tended to stability on time series.As the grass belt length increased, values of Re at each monitoring section decreased,and the rangeability of Fr decreased.Meanwhile,the Fr showed a trend of decrease along the gully beds. (2) Grass belt length made much differences to the temporal and spatial variation of flow velocity in gully beds.With the decrease of grass belt length,the flow velocity was more obviously reduced on time series.The flow velocity decreased with increasing of grass belt length in each monitoring period. (3) The resistance coefficient showed increasing trend with test time and along the gully beds.And the resistance coefficient of gully 4 (the grass belt length was 12m) was greater than the other gullies at each monitoring section. (4) When the grass belt length was 12m,the grass belt had superior effect in reducing flow velocity and increasing resistance coefficient of runoff.

Keyword冲沟侵蚀 水动力特性 草被带长度 金沙江干热河谷
Indexed ByCSCD ; 北大中文核心
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
杨丹,熊东红,张素,等. 金沙江干热河谷冲沟沟床草被对径流水动力特性的影响[J]. 水土保持学报,2014,28(6):77-81.
APA 杨丹.,熊东红.,张素.,张宝军.,郑学用.,...&史亮涛.(2014).金沙江干热河谷冲沟沟床草被对径流水动力特性的影响.水土保持学报,28(6),77-81.
MLA 杨丹,et al."金沙江干热河谷冲沟沟床草被对径流水动力特性的影响".水土保持学报 28.6(2014):77-81.
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