【作者】 曹波；

【导师】 康玲；

【作者基本信息】 华中科技大学 ， 水利水电工程， 2006， 硕士

【摘要】 水库的拦洪、蓄洪能力是抗洪救灾工作中领导决策的一项重要依据,因此快速而准确地监测库容量变化就显得尤为重要。常规水利资料搜集方式已经不能满足当代水利水电工作的需要,主要表现在它的不准确性和非实时性上,这就给洪水分析、防洪决策等工作带来了很大程度的不便,使得所得的结果不精确和后置,并且越是洪汛期动库容所占的比例越是不能忽略。而遥感技术的实时和准实时特征可以很好地解决这一问题,因此采用遥感技术用于测定水库动库容具有得天独厚的优势。利用遥感图像,进行水库动库容的定量测算,是水库水资源信息研究的新途径,也是对水库本身动态演化过程监测的新方法。论文首先介绍了在动库容研究的目的、意义以及国内外概况,然后对现有的研究方法和本文的研究方法作了详细的介绍与对比。在第三章中概括性的叙述了TM遥感影像与DEM(数字高程模型)的发展过程及特点,在随后的章节中详细的阐述了遥感影像结合DEM测定水库回水曲线以及利用水位站点实测数据进行校正等内容。其后进行动库容计算,其中包括了水面像元统计、楔形容积计算以及槽蓄容积计算等方面,并对其计算成果进行了分析。最后对全文进行了总结与归纳,提出了研究的不足以及应当改进的地方,并对该研究未来的发展前景做出了展望。更多还原

【Abstract】 The reservoir’s capability of storing floodwater is an important evidence in leader’s decision to fight a flood, therefore rapidly and exactly observing the change of the reservoir’s capacity looks like special important. General hydrology information collecting way can’t satisfy the requirement of present hydropower already, mostly it represents in inaccuracy and unreal time. It enhances inconvenience about flood analysis and decision-making to fight against flood, makes the results inaccurate and postposition, also, the reservoir’s dynamic capacity can’t ignore in period of flood. The real time and standard real time character of remote sensing can solve the problem effectively. So adopting remote sensing to measure the reservoir’s dynamic capacity has natural advantage. Using remote sensing image to measure the reservoir’s dynamic capacity is a new approach to reveal hydrology information, and it is a new way to observe the dynamic evolvement process of the reservoir.In this paper, first introduces the purpose, signification and general situation home and abroad of dynamic reservoir capacity research. Second particular introduces and contrasts the difference between in existence approach and this paper’s research. In the chapter 3, the development and characteristic of TM image and DEM (Digital Elevation Model) is explained generally. In following chapter, how to measure backwater curve using remote sensing and DEM is particular expounded, including revise the backwater curve using water level data which is measured by hydrology station. Thenceforth, the capacity of reservoir is calculated, including surface pixel statistic, cuniform cubage calculation and river groove capacity calculation etc, at the same time, result analysis is completed. Finally entire paper is induced and concluded, mention of disadvantage and some places that need improved on, the prospect of development is given out.更多还原