| Our country is a nation of many mountains,due to geological conditions,geological development,all kinds of geological disasters occurring frequently,causing great loss to the people's life and property.According to the relevant survey statistics,in the major geological disasters,the proportion of landslides in geological disasters is more than one half,and among the many influencing factors of slope body deformation and failure,the influence of meteorological factors on slope stability is unclear and needs further study.This paper adopted for data collection,field investigation,numerical analysis method,which mainly explore based on slope stability analysis method under different meteorological conditions.A simple,practical and less error empirical formula is proposed to analyze slope stability.The main work and results of this paper are as follows:1.The effect of individual continuous rainfall on slope was observed in an area.The effects of accumulated rainfall on slope were observed in the same area.The study found that the number of daily disaster sites changed with the change of daily rainfall,and the two showed a high degree of synchronism,and the increasing amount of rainfall and the amount of mass destruction in the same time period is also very clearly relevant.This paper found that acid rain and dai Iy range of air temperature were obviously related to landslide stability.2.Based on the collected data,a practical empirical formula for slope stability is derived by using natural history analysis method,engineering geological analogy method and regression equation.The survey within the territory of the shao-wu out geological environmental conditions,and the geological disasters in the land,and of high-steep slope type,distribution,size,stability,forming conditions and affecting factors and so on has carried on the analysis and evaluation,to facilitate statistics and calculation,we suppose that the artificial slope height is 10 m,the artificial slope 70°and the landslide sliding bed of high steep artificial slope is mostly in the state of near straight line of broken line,under the condition of approximate to linear state of landslide to deduce that computational formula of the stability of the soil slope: Ks=(Gcos?tan?+?c L)/(Gsin?).3.Using the above empirical formula to calculate a slope stability coefficient,And compared with the stability coefficient calculated by the classical slope stability formula(Swedish strip method)to evaluate the stability of slope.The results show that the traditional Swedish method has proved the validity of the empirical method for slope stability analysis.On the basis of this,the empirical method increases the change of slope stability with the change of rainfall in the process and can predict the development trend of slope stability well. |
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