中文摘要：

针对滑坡体体积难以获取问题，本文分析滑坡发生的机理，提出滑坡前后物质守恒这一基本原理，定义了平衡线概念，并以高分辨率遥感影像和数字高程模型（DEM）为基础建立了一种基于物质平衡的滑坡堆积物体积估算模型．在利用模型进行体积计算时，本文通过并引入高度调节器，有效消除滑坡前后DEM高程值的系统误差，把平衡线搜索过程转变为能够自动计算过程．本文结合实验数据介绍了物质平衡原理和平衡线定义，并给出了基于物质平衡的滑坡体堆积物体积计算模型和计算过程．通过四川省汶川县漩口镇滑坡的应用和验证表明本文提出的计算模型和方法极大程度上降低了由于滑坡堆积物面积、滑坡前后DEM数据的高程精度和尺度差异等因素带来的误差．

英文摘要：

To solve the difficulty of obtaining the landslide volume, an estimated model of the landslide volume was established with the high resolution remote sensing images and digital elevation model （DEM）. Through analyzing the mechanism of landslide debris, the mass balance principle that the eroded volume of the landslide was equal to the settled volume was proposed. A height adjustment was introduced to simplify the calculation process, which could effectively eliminate the systematic errors of the DEM elevation values before and after the landslide. The estimated method of the landslide volume reduced the error caused by the factors such as the area of the landslide matter, the elevation of the landslide before and after the DEM data precision and scale differences, and it was validated in the landslides in Xuankou town of Wenchuan county, Sichuan Province. The results indicate this method could be used to estimate the landslide volume quickly and effectively at engineering analyses, and is significant for the emergency command, fast rescue decision-making as well as restoration and reconstruction in the post-disaster.