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After the completion of the Three Gorges Reservoir, dam water level maintained at 145-175m between the fluctuations in the water level luffing 30m, previously exposed rock and soil slope in water infested periodically, resulting in groundwater and reservoir water together in the slope surface and rock soil medium, produced for rock and soil physical, chemical and mechanical effects on the soil slope and rocky slope produce different effects. After water, soil slope periodically soaked in water, library, library or partially immersed in water, swelling, coupled with wave erosion, leading to the ancient landslide, or the leading edge of the ancient pour rubble scattered or ancient landslide occurred or ancient stone down Heap happen again slip, old landslide resurrection, until a bank collapse, collapse or landslide; rather rocky slope water periodically haunt the library, causing physical and mechanical properties of rock slope changes, the static pressure in the reservoir water, uplift force and effect of hydrodynamic pressure, rock bottom of the sliding surface flooding potential softening clay, pore pressure increases, the shear strength is reduced, causing the sliding surface slope along the weak activity, leading to landslides occurring rock, rock avalanche and so on. Delineation of rock and soil types and their spatial distribution is the slope slope deformation and failure of law and Slope Stability Evaluation research. Currently, the delineation of reservoir bank slope of rock and soil types and their spatial distribution is mainly through field survey methods to obtain. In a large reservoir 5311km traditional manner within the investigative work requires a lot of manpower and financial resources, and time-consuming. A wide range of remote sensing technology, rapid and efficient access to multi-band, multi-temporal information, relevant data to solve the problem of access and update. Reservoir vegetation cover and more, and poor penetration of remote sensing, it can not be directly delineated using remote sensing reservoir rock and soil types and their spatial distribution. Based on the Yangtze River in the nearshore sediment concentration and the type of rock and soil slope correlation, the first use of remote sensing data inversion sediment concentration, and then indirectly infer slope type. Specific research papers and conclusions are as follows: (a) in Wuhan Tangxun for the experimental area, measured using the spectrometer field containing different concentrations of the spectral curve sandy water, indoor filter weighing method for the determination of sediment concentration. By analyzing the different bands of sediment concentration and spectral reflectance correlation, select optimal sediment concentration remote sensing bands and established a linear model, logarithmic model, exponential model and the negative exponential model to analyze the four kinds of models to be combined precision, resulting in a negative exponential model best. (2) Based on CBERS remote sensing data, and the resulting negative exponential model applied to Three Gorges Reservoir Zigui - Badong. First, the inversion of the study area in 2004 -2006 years 3 years sediment concentration; Second, calculate the three-year average sediment concentration, and its average sediment concentration grading; Finally, the use of different levels of mud geotechnical soil bank sediment concentration delineated types of spatial distribution. (3) In order to verify the accuracy of dividing slope type, paper selected 32 plots, compared with field observations, draw their accuracy of 84.375%. Analysis misclassification part, which is mainly affected by regional topography, water level changes, the Yangtze River water velocity, rainfall, tributary input resistance, human activities (vessels as well as its sparked waves), remote sensing image acquisition time and weather conditions and other factors affected. Delineation of the spatial distribution of soil slope, slope stability helps to carry out research, but also for the macroscopic deformation and failure to grasp the law and slope stability analysis and evaluation services, and disaster prevention and mitigation of the reservoir has important significance.
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