坡面流

本文主要研究了基于FPGA的坡面流流速仪。

This paper mainly discussed the design of overland flow velocity detecting instrument based on FPGA .

单降雨实验中，当降雨高度小于5m时，无论雨强大小，坡面流泥沙含量随雨滴打击强度的增加而增加；

During the single rainfall experiment , when the rainfall splash height was less than 5 meters , the overland flow sediment contain would add with the lower rainfall splash height increased ;

当降雨高度大于5m时，坡面流泥沙含量随雨滴打击强度的增加而降低。

When the rainfall splash height was more than 5 meters , it would drop with the higher rainfall splash height increased .

坡面流流速计算的研究

A Study on the Calculation of the Velocity of Overland Flow

坡面流及土壤侵蚀动力学（Ⅰ）&坡面流

Dynamics of overland flow and soil erosion (ⅰ) & overland flow

坡面流阻力规律试验研究

Experiment study on hydraulic resistance laws of overland sheet flow

草被覆盖阻延坡面流作用试验研究

Experimental Study on Delay of Grass Coverage on Overland Flow

坡沟系统坡面流能量变化过程与特征

Changing process and characteristics of runoff energy in the slope-gully erosion system

坡面流与坡面侵蚀动力过程研究的最新进展

The recent development of the study on overland flow and hillslope processes

山区流域坡面流的一种近似解

An approximate analytical solution for overland flow in Mountain Watershed

坡面流运动方程和有支流入汇时的一维明渠流方程形式过渡区动床明渠流的流速分布

Velocity profile of open-channel flows in the transitional roughness region on mobile beds

陡坡坡面流的基本方程及其近似解析解

The basic equation of overland flow and iFs approximate analytical solution for a steep hillslope

黄土区小流域坡面流模拟

Simulation of Runoff Flooding on Sloping Land of Small Watershed in Loess Region of Northern Shanxi

草被覆盖下坡沟系统坡面流能量变化特征试验研究

Experimental Study on Changeable Characteristics of Runoff Energy in Hillslope-Gully Slope Erosion System with Different Grass Coverage

草被覆盖对坡面流流态影响的人工模拟试验研究

Experimental Study on the Effect of Grass Cover on the Overland Flow Pattern in the Hillslope-gully Side Erosion System

重庆缙云山典型林分地表覆盖对坡面流的阻力影响研究

The Study on the Influence of Typical Forests Surface Cover to Overland Flow Resistance in Jinyun Mountain of Chongqing

坡面流输沙能力与土壤可蚀性参数对细沟土壤侵蚀过程影响的有限元计算模型研究

Finite element model for calculating effects of slope flow sediment transport capacity and soil erodibility on rill erosion processes

薄层水流流速测量系统测量坡面流及其流域内沟道中水流速度；

Shallow water flow velocity measuring systems for flow velocities in hill-slope rills and / or watershed water channels ;

坡面流是坡面土壤侵蚀的根本动力，是研究土壤侵蚀动力学过程的基础。

Overland flow produces eroding force and plays a basic role in the study of the dynamics process of soil erosion .

饱和坡面流运动波解初探饱和粘性土的抗剪强度及应力路径探讨

Preliminary Approach to the Solution for the Kinematic Wave of Saturation Overland Flow On Shearing Strength and Stress Path of Saturation Clay

而坡面流弗劳德数在整个试验过程中均大于1，属于急流范围。

The Froude number of runoff flow larger than 1 under the all experiments and it is belongs to the turbulent condition .

沥青瓦安装的叠层设计在水从屋顶坡面流到屋檐的过程中提供了双重保护层。

The overlapping design of the installed shingles provides a double layer of protection as the water flows down the roof slope to the roof edge .

从物理意义上看坡面流阻力系数和平均深度是表征坡面流输移过程中粗颗粒泥沙（团聚体）侵蚀状况的最佳水力学参数。

From a physical point of view resistance coefficient f and overland flow average depth h were the best dynamics parameters to characterized aggregate abrasion degree through transport process .

考虑到坡面流的流速及非线性双曲型方程，采用迎风有限差分显格式来离散方程，编制计算程序，进行了计算。

Considering the velocity of the water streams and the nonlinear equation , facing wind finite difference method being used to solve the equation , and a program was written out .

建立了以水力侵蚀产沙的动力学理论为基础，模拟坡面流及其侵蚀产沙的控制方程体系。

The study sets up the equation systems of slope flow simulation and its erosion and sediment yield , which based on the kinetic theory of water erosion and sediment yield .

坡面流的时空变化过程对坡地上土壤侵蚀机理的研究及水土保持工作都具有十分重要的意义。

The time and space variation of runoff flooding on sloping land is of great importance for the study of the mechanism of soil erosion of sloping land and soil-water conservation .

根据坡面流理论，运用一维运动波模型，推导出了考虑黄土沟壑区地形地貌条件的坡面产流公式。

On the base of overland flow theory , by one-dimension kinetic wave model , the formula for overland flow is deduced , which includes configuration and land feature in loess donga .

通过对模型求解得出土壤发生侵蚀的临界水流切应力并对其影响因素进行分析，对坡面流土壤侵蚀的微观力学机理作初步的探讨，以期对防治上壤侵蚀和水土保持工作有所借鉴。

By approaching preliminarily mechanical mechanism of soil erosion of hill slope we have the purpose to serve the prediction and control of soil erosion and work for water and soil preservation .

可以直接利用流速大小来验证坡面流是急流还是缓流；而利用流速判断坡面流是层流还是紊流则需要考虑不同的坡度影响。

It could directly use velocity to verify that whether overland flow was the rapids or slow ; but judge turbulent or laminar flow by flow velocity needed to consider different slope influence .

用平均水流深度与坡度的幂函数方程可以得到与坡度、流量拟合方程一样的决定系数，使得在坡面流输移过程下泥沙颗粒剥蚀大小预测精度大大增加。

The decision coefficient of abrasion degree and average depth , slope fitting power function equation could reach same as the slope , discharge , which made the abrasion degree prediction accuracy through transport process increase greatly .