| 1. | ( 3 ) hydraulic resistance coefficient formulas are derived according to a great number of flume experiments and relative theory analysis
( 3 )通过系列水槽试验和相关理论分析，提出了十字片梅花加糙的有效水深和水力阻力系数计算公式。 |
| 2. | The flume experiment with single spur dike is carried out . water surface profile and velocity field of flow in flume are measured by manometer tube and propeller current meter respectively
首先进行了单丁坝水槽实验，采用测压管和旋浆流速仪对实验水槽中水流的水位以及流速场进行了详细的测量。 |
| 3. | Based on the extended shallow water equations , numerical model is established . verifications and comparison are done to verify its validity by the flume experiment with submerged dike
据此应用dsi法建立了相应的计算模式，利用水槽试验进行验证，并将该模式的计算结果与浅水方程的结果进行比较。 |
| 4. | The author successfully simulated the rapid sliding of avalanche soils on mild slope with saturated soils in flume experiments , and the longest distance that avalanche masses can move was studied
通过水槽实验，对崩塌土所能到达的最远距离进行了研究，成功地模拟了崩塌块体在饱和度较高的缓坡上快速滑行的现象。 |
| 5. | Only the method for using backwater expression can predict the variation of water surface near the spur dike very well . numerical simulations of the flume experiment cases are carried out with the standard k - e turbulence model
随后采用标准k一e紊流数学模型，依据水槽试验资料，数值模拟了绕坝和漫坝两种情况下水流的流动过程。 |
| 6. | The results of flume experiment indicated that , the flow velocity and froude number of the overland flow would fall with the rainfall splash intensity rose ; the flow depth and resistance coefficient would enhance with the rainfall splash intensity increased
水槽试验结果表明：水槽槽面薄层水流流速及弗汝德数随雨滴打击强度的增加而降低，水深、阻力系数随雨滴打击强度的增加而增加。 |
| 7. | The value of correction coefficient of kinetic energy increases as a result . the water surface profiles of flume experiments are computed by three different methods : adjusting the local head loss coefficient , deduction of backwater area , and application of backwater expression
随后结合实测水位资料，通过采用调整局部水头损失系数、扣除回水面积以及壅水公式等不同的水面曲线计算方法对实验水槽一维水面曲线进行计算。 |
| 8. | By means of the study the main results are listed as follows : ( 1 ) the results of flume experiment and simulated rainfall experiment with a fixed intensity indicated that , the influencing degree of rainfall on overland flow velocity had something to do with the runoff discharge above and rainfall intensity
通过研究取得了如下结论： ( 1 )水槽放水试验和定雨强模拟降雨试验结果表明，降雨对坡面薄层水流流速的作用与放水流量和雨强大小有关。 |
| 9. | In this paper , some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data . the cross section of compound channel can be divided into four regions : the undisturbed region in main channel , the interactive region between channel and plain , the undisturbed region in flood plain and the boundary region . in the undisturbed regions , the distribution of longitudinal velocity along the depth has the feature of lograithmic . whereas , in the interactive region , the longitudinal velocity does not obey the logarithmic distribution law , but it can expressed as a revised logarithmic function by using a wake function . on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained . in the boundary region , the longitudinal velocity obeys the law of parabolic distribution . furthermore , according to the simplified diffusion equation , the transverse distribution of sediment concentration in the interactive region is deduced . the analysis is in good agreement with the measured data
本文根据漫滩水流的运动特点，将漫滩水流的复式断面分为主槽平衡区、滩槽交互区、滩地平衡区及边壁区等4个区，并给出了各区宽度的经验公式.根据滩槽交互区垂线流速分布的变化特点，提出了附加尾流函数的对数流速分布公式.在简化水流运动方程和泥沙扩散方程的基础上，对滩槽交互区内垂线平均流速及含沙量沿横向分布进行了理论分析，提出了反映滩槽水流动量交换强度的横向涡量粘性系数及横向扩散系数的表达式，得到了漫滩水流垂线平均流速及含沙量沿横向分布的解析解，并与实测资料吻合较好 |
| 10. | However , according to ann ' s theory , making use of visual basic development tool , friendly - interface single output three layers " artificial neural network generator base on improved bp algorithm has been developed by the author , and after constructing the model , the value of d _ ( cmax ) , finally the gross bed - load transport rate of non - uniform sediment with a wide distribution in flume experiment of stead sediment transportation have been forecasted
笔者采用的途径则是根据人工神经网络理论，利用vb开发出界面友好、基于改进bp算法的多输入单输出三层神经网络生成器软件，并采用该生成器建模，对平衡输沙状态下的水槽输沙试验的d _ ( cmax )和总输沙率进行预测计算。 |
