| 1. | Calculation of water surface profile for earth dam with core wall during level fall of reservoir
水库水位降落期心墙土坝水面线计算 |
| 2. | The water surface lines in the reach from yichang to shashi , downstream of the three gorges , before and after completion of the three gorges reservoir are calculated by using a steady flow sediment model
在此基础上，用恒定流泥沙数学模型计算了三峡水库建库前后，其下游宜昌~沙市河段的水面线。 |
| 3. | The change of discharge and diversion ratio of the main junction is calculated by the 1 - d model , and the influence of the engineering on the whole pearl river delta networks is analyzed
同时利用一维数模计算工程后水面线及河网主要节点流量和分流比的变化，从整体的角度分析工程对整个珠江三角洲流域的影响。 |
| 4. | Based on the characteristics of the daily regulation wave of hydropower stations , the water surface lines in the rising and falling stages are calculated by using an one - dimensional steady flow model and an unsteady flow sediment model
摘要根据水电站日调节波的特性，运用一维恒定流和非恒定流泥沙数学模型，分别计算了河道涨落水过程的水面线。 |
| 5. | Mathematical model is used to calculate and analyze water line in case of 9 kinds of flood flow levels respectively in reservoir . there are two programs including with enclose tideland for cultivation and without it in every flow level
利用数学模型分别对9个洪水流量级进行了水库沿程水面线计算分析，每个流量级分有围垦堤和没有围垦堤两个方案。 |
| 6. | Besides , traditional hydraulic method is commonly adopted to water surface computation in which section - averaged hydraulic parameters are used . the accuracy is quite low . it is backward comparing with modern computational fluid mechanics
此外，目前航道整治设计中水面线的计算一般都采用传统水力学的断面平均水力要素计算方法，精度较粗，大大滞后于当今计算流体力学研究水平。 |
| 7. | The effect of groyne length and layout on water surface is analyzed in the paper . based on the results of simulation and experiment , the local energy loss of the flow due to the groyne is studied . consequently the surface variation and height of damming are also analyzed
论文分析了丁坝长度与布置对水面线的影响，根据流场、紊动场模拟结果和实验结果研abstract究丁坝造成的水流局部能量损失，并对水面变化和丁坝奎水高度进行了分析。 |
| 8. | 5 . based on the physical model , summarized the general mode of river development in excavated segment with its up and lower influence reach after dredging , it means that gradually deposit in dredging segment while wash out in up reach , and the change intensities are weakening as the time goes on
概括总结出了河段疏浚挖槽后，疏浚挖槽河段及其上下影响河段的河床演变及水面线变化的模式，即挖槽段逐渐回淤，挖槽上游段逐渐冲刷，并且其回淤及冲刷的强度随时间的推移由大变小。 |
| 9. | Various computational examples are presented in the paper for different cases , such as simultaneous routing of main and branch streams , routing of dam - break flood , computation of simultaneous outflow from dam , flood calculation in watercourse with multiple branch steams , and computation of the hydraulic grade line in the reservoir
论文针对不同条件分析了干支流同时演进计算、溃坝洪水计算、干支流大坝泄洪对下游的影响、多支流河道演算和库区水面线的计算。 |
| 10. | The result show that the position of free surface is higher because of frusta of brake , especial obvious in the head of frusta of brake ; flux coefficient and pressure on dam are quite influenced by type of frusta and 3 a type frusta of brake relative to 2 type frusta of brake has bigger flux coefficient and smaller pressure on dam ; obvious influence of ability of discharge flow for different ratio of thickness of frusta and breadth of brake and pressure on dam reduces with increasing ration of thickness of frusta and breadth of brake , while bigger flux coefficient is obtained when tlb = 0 . 2
结果表明，闸墩河海大学博士论文的存在抬高了水面线的位置，其中在闸墩头部尤其明显;墩型对流量系数和坝面压力影响较大， 3a型闸墩相对于2型闸墩具有更大的流量系数和更小的坝面压力:不同的墩厚闸宽比t / b对泄流能力也将产生显著的影响，随着墩厚闸宽比的增加，坝面压力降低，而当t / b二0 . 2时溢流坝具有更大的流量系数。 |
