引航道

• Uses and traits of three - dimensional gis were fully comprehended and contrasted , and we completed simulation display and real time information search . flow field situation can be seen through flying route and figures from different direction . raising visibility and simulation level is beneficial to promote the advance of navigation lock hydraulics
  对三维gis软件的功能特点进行了充分了解和对比分析，并首次将三维gis功能用于船闸引航道水流模拟显示与信息查询方面，完成了三维仿真显示，并进行实时信息查询，同时可通过飞行路线、不同视角来从各个角度查看流场情况。
• The results show that the added mass coefficient will increase with ( 1 ) the decrease of the distance between ship and chamber sides , ( 2 ) the decrease of the water depth inside the chamber , ( 3 ) the decrease of the distance between the ship and the frontier of the chamber , ( 4 ) the decrease of the depth of guiding channel , ( 5 ) the decrease of the remaining part of the ship in the guiding channel , ( 6 ) the decrease of the distance between the ship and the barrier in front of the ship
  船留在引航道中的部分的减小(当引水航道的水深一定时) 6当船在运动方向有障碍物时，随船与障碍物之间距离的减小附加质量系数均增大。本文对三峡工程中的实际船进入承船厢时船的附加质量系数进行了计算。
• Through the analysis on the process of change claim on construction of temporary cofferdam for the downstream leading channel of jinghong hydropower station , the full process of how to make the application for change of construction project based on the change between the actual construction condition and the construction condition during bidding and how to realize the approval of the quotation of contract change is described herein for the construction enterprise , and then some viewpoints on the management and utilization of the relevant talent resources are put forward as well
  摘要工程索赔是一项知识和技术面很广，复杂而又系统性很强的工作，文中通过分析景洪水电站下游引航道围堰变更索赔过程，说明施工单位如何根据实际施工条件和投标时施工条件的改变，提出变更立项申请，实现变更报价审批的过程，同时在人才资源的管理和利用上提出一些见解。
• At the same time , figures involving attribute data about flow field at inlet and outlet downstream or wave motion of water at the downflow head of lock chamber of siyang navigation lock were displayed through gis application system which we developed . according to data of baoying navigation lock acquired by mathematics model , figures about velocities which have the same value , velocities toward cross direction which have the same value and flow field at inlet and outlet upstream were formed . achievement data , space information and attribute information were in connection with figure so as to search for and analysis the information , which is satisfying
  同时完成了江苏泗阳船闸下游引航道非恒定流及其改善措施的计算分析研究和宝应船闸上游引航道口门区水流条件计算分析研究，运用gis技术和所设计的gis应用系统对泗阳船闸下游引航道内流场以及下闸首水位波动情况进行信息显示，根据对宝应船闸的计算结果生成上游引航道口门区等流速图、横向流速等值线图和流场图，使计算分析成果数据、空间信息、属性信息与图形显示有机结合，便于查询分析，效果令人满意。
• Abstract : based on the results of hydraulic model test and remote - control ship model , the unsteady flow characteristics in the downstream approach channel and the reaches from three gorges project to gezhouba project and navigation conditions in these reaches during the tgp flood - discharge are analyzed . the measures of raising navigation discharge level and improving navigation conditions are given
  文摘:根据水工模型试验成果，分析了三峡工程泄洪时坝下游引航道和两坝间河段(三峡至葛洲坝)的非恒定波流运动特性，结合遥控自航船模试验对两坝间的通航水流条件进行了分析评价，并提出了提高通航流量标准、改善通航条件的相应措施。
• Combined with the construction programming of no . 3 lock , further studies on the flow pattern at various locks are undertaken . to the actual conditions of siyang locks and taking various effects into consideration , engineering measures which are expected to ameliorate the pattern of flow at lower lock approach are propose
  在此基础上，结合泗阳三线船闸的建设规划，进一步对各线船闸水流特征进行了计算和试验，针对泗阳船闸的具体情况综合考虑多种因素，提出了改善下游引航道非恒定流的工程措施，获得了满意的结果。
• Based on the river regime of tgp dam area and the arrangement of upper and lower access channels , the experimental research on the influence of such unsteady flow on the navigation , the evaluation of navigable conditions under the unsteady flow and the study of corresponding improvement measures are presented in this paper
  本文结合坝区河势特点及上下游引航道布置，试验研究了大坝泄洪及船闸充泄水非恒定流对上、下引航道通航影响，同时进行了非恒定流通航条件评价及改善措施研究。
• Except for research on the unsteady flow at lower lock approach in siyang , jiangsu province by physical model , a two - dimensional numerical model is developed to explore the alternate research method in this paper . through studying the project using physical model and numerical model simultaneously , the governing equations , numerical algorithm and the computation accuracy of the numerical model are analyzed . comparison between computed results and experimental data gives that computed results is well agree with measured data under several water level cases , which indicates that the numerical model is valid and reliable
  通过数学模型和物理模型的同步研究，对数学模型的控制方程、数值计算方法以及数值模拟的精度与物理模型试验进行了比较分析，同实测资料验证的结果表明：该数学模型与物理模型一样在不同的水位组合，不同的运行工况条件下都能正确地模拟下游引航道非恒定流的实际水力情况，模型计算结果与实测资料十分吻合，说明建立的数学模型是合理的，结果是可靠的，可以利用该数学模型进行船闸下游引航道非恒定流特性的研究。