非硬化土路径流侵蚀产沙动力参数分析

应用生态学报

非硬化土路径流侵蚀产沙动力参数分析

黄鹏飞¹,王文龙^1,2**,罗婷³,王贞⁴,王正利⁵,李仁⁶

（¹中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨凌 712100； ²西北农林科技大学水土保持研究所，陕西杨凌 712100； ³杭州大地科技有限公司，杭州 310000； ⁴中国水电顾问集团华东勘测设计研究院，杭州 310014； ⁵黄河水利委员会西峰水土保持科学试验站，甘肃西峰 745000； ⁶吴起县水土保持工作队，陕西吴起 717600）

出版日期:2013-02-18 发布日期:2013-02-18

Analysis of hydrodynamics parameters of runoff erosion and sediment-yielding on unpaved road.

HUANG Peng-fei¹, WANG Wen-long^1,2, LUO Ting³, WANG Zhen⁴, WANG Zheng-li⁵, LI Ren^6

(¹Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China; ²Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, Shaanxi, China; ³Hangzhou Earth Science and Technology Co., Ltd, Hangzhou 310000, China; ⁴Huadong Institute of Water Conservancy and Hydropower Survey and Design Hydrochina Engineering Consulting Corporation, Hangzhou 310014, China; ⁵Xifeng Experimental Station of Soil and Water Conservation, Yellow River Conservancy Commission, Xifeng 745000, Gansu, China; ^6Wuqi Work Team of Soil and Water Conservation, Wuqi 717600, Shaanxi, China)

Online:2013-02-18 Published:2013-02-18

摘要/Abstract

摘要： 采用野外径流冲刷试验的方法，模拟研究非硬化路面土壤剥蚀率与各水动力学参数之间的关系，并建立各自的定量关系式.结果表明：不同流量和坡度下，平均土壤剥蚀率可以用放水流量和坡度的幂函系数关系进行描述，并随放水流量和坡度的增大而增大，流量对土壤剥蚀率的影响大于坡度；土壤剥蚀率与水流流速呈幂函数关系；土壤剥蚀率与径流动能呈幂函数关系，径流动能对土壤剥蚀率有重要作用；土壤剥蚀率与单宽径流能耗呈线性函数关系，土壤可蚀性参数和临界单宽径流能耗的均值分别为0.120 g·m^-1·J^-1和2.875 g·m^-1·J^-1.放水流量和坡度、单宽能耗可准确地描述道路土壤侵蚀过程并对土壤侵蚀量进行测算.

Abstract: By the method of field runoff washout experiment, a simulation study was conducted on the relationships between the soil detachment rate and the hydrodynamic parameters on unpaved road, and the related quantitative formulas were established. Under the conditions of different flow discharges and road gradients, the averaged soil detachment rate increased with increasing flow discharge and road gradient, and the relationships between them could be described by a power function. As compared with road gradient, flow discharge had greater effects on the soil detachment rate. The soil detachment rate had a power relation with water flow velocity and runoff kinetic energy, and the runoff kinetic energy was of importance to the soil detachment rate. The soil detachment rate was linearly correlated with the unit runoff kinetic energy. The averaged soil erodibility was 0.120 g·m^-1·J^-1, and the averaged critical unit runoff kinetic energy was 2.875 g·m^-1·J^-1. Flow discharge, road gradient, and unit runoff kinetic energy could be used to accurately describe the soil erosion process and calculate the soil erosion rate on unpaved road.

黄鹏飞1,王文龙1,2**,罗婷3,王贞4,王正利5,李仁6. 非硬化土路径流侵蚀产沙动力参数分析[J]. 应用生态学报.

HUANG Peng-fei1, WANG Wen-long1,2, LUO Ting3, WANG Zhen4, WANG Zheng-li5, LI Ren6. Analysis of hydrodynamics parameters of runoff erosion and sediment-yielding on unpaved road.[J]. Chinese Journal of Applied Ecology.