【作者】 李军华；

【导师】 王宗敏；

【作者基本信息】 郑州大学 ， 水工结构工程， 2004， 硕士

【摘要】 本文系统地讨论了大坝渗流监测系统的设计方法，并基于大型有限元软件Ansys程序对大坝渗流进行计算机模拟。 大坝渗流监测系统是水利枢纽安全运行的保证。本文首先讨论了大坝渗流监测的主要内容和方法。在此理论的基础上，结合河南平顶山昭平台水库，对大坝渗流监测系统的设计给出了详细的说明，同时也简要介绍了水库信息自动化系统的实现。昭平台水库由主坝、副坝、泄洪闸、输水洞和电站组成。采用分布式的大坝渗流监测系统，通过传感器对水库大坝的扬压力和水位等信息进行实时采集，利用PLC技术实现对闸门的自动控制，图像监视系统对水库重要设施进行实时监视。各系统通过光缆将监测的数据传至中心站，并对数据进行分析处理，实现了水库的水利自动化管理。该系统的设计在水库信息自动化建设方面做了一些有益的尝试。 其次本文对大坝渗流监测的软件部分做了一些必要的说明。对弦式仪器率定软件以及大坝渗流监测管理软件和控制监测装置的软件给出了编制的原则及流程。 最后，本文根据渗流基本方程及定解条件的比较，将Ansys软件的温度场分析功能应用于渗流场的分析，并采用死活单元技术，通过迭代算法计算浸润线，解决了土坝渗流稳定问题的求解。该方法可以解决复杂边界、多种介质的渗流问题，为工程应用提供了极大的便利。更多还原

【Abstract】 This paper discusses the way to design the seepage monitoring system of the dam, and simulates the seepage of dam on the platform of the Ansys program.The seepage monitoring system can ensure the dam work properly. At first, this paper discusses the main content and ways of the seepage monitoring system. On the basis of the theory and combined with the Zhaopingtai reservoir, in this paper the seepage monitoring system is explicated, at the same time this paper introduces the hydraulic automation of Zhaopingtai Reservoir in brief. Zhaopingtai reservoir is composed of a main dam, an auxiliary dam, flood discharge gates, a water transport hole and a power station. Using the distributed dam safety monitoring system, the dam seepage press and water level are real time collected by sensors. PLC technology is employed to control the gates automatically. The reservoir important facilities are monitored through the images monitoring system. The monitoring data from all subsystems are sent to the center station by cables and then analyzed hi computers, which realizes the automatic management of this reservoir. The application of this automation system will enhance the reservoir information automation system.Secondly, the paper explains the soft programs of the seepage monitoring system. We give the principles and flow charts of the soft programs. The functions of the programs are introduced in this paper.At last, according to comparison of the fundamental equations and boundary conditions, the Ansys function of temperature field analysis is applied to that of seepage flow field, the element birth or death technique with overlap method is adopted to calculate the free water surface site-saturation line, in order to solve the problem of Earth dam seepage flow stability. This method can solve the seepage flow problem of complex boundaries and mediums.更多还原