High Slope Of Strong Rainfall Infiltration Stability Analysis

With the railway, highway, water conservancy and hydropower engineering construction development, slope stability problem is an important research topic, and rainfall is main factors of inducing slope instability. So on the stability research of the slope under the action of rainfall has important significance.The main research of this thesis is that under strong rainfall infiltration of highsteep slope stability, according to the engineering geological conditions and the characteristics of rock slope, numerical model of slope is establisted, with geotechnical engineering software flac3d for three kinds of rainfall intensity simulating the slope stability,Observe slope variation of pore pressure field and displacement field. Then on the slope stability evaluation of quantitatively.The main research contents are as follows:1. Analysis of rainfall infiltration law, and rainfall condition saturated-unsaturated seepage control equations and boundary value conditions.2.Discusses the factors affecting the stability of the slope, the analysis of rainfall infiltration on the slope stability, and puts forward the mechanism of slope rainfall model.3. Flac3d introduces the software flowing-solid coupling principle, mechanical model and coupled equations saturated-unsaturated flac3d model, citing VG nested fish program written language and the function of the suction matrix moisture permeability coefficient matrix and the relationship with the suction with explicit, using method of coupling mechanics and fluid.4. The rainfall intensity are divided into three conditions to study rainfall intensity and rainfall with different influence on slope stability.5. For slope stability analysis of rainfall infiltration of the important factor of rainfall infiltration, introduced based on the seepage field strength reduction of theoretical calculation of stability against sliding on hole formed by rainfall infiltration pore pressure field, stress field and displacement field and plastic zones and shear strain increment comprehensive analysis the stability of the slope.