Expansive Soil Slope Deformation Characteristics And Development Trend Forecast Of Xinyuan In Yunnan Luliang

Expansion is a special kind of clay soil, it is very widely distributed in China, withthe rapid development of China’s economy, more and more construction projects willpass through the land with the expansion, due to the expansion of poor engineeringproperties of soil, resulting in a variety of geological disasters, and expansive soillandslide has now become the focus of expansive soil problems. Due to the specialnature of expansive soil, slope of expansive soil slope in the case of very slow creepinstability can, people keep track of. Therefore, to study the stability of expansive soilslope, and use of monitoring data timely and accurately predict future trends slopeshave important practical significance.In this paper, Yunnan Luliang expansive soil slope for the study, the slope of themain areas of geological conditions, boundary conditions and influencing factors ofslope deformation depth study, from the macro to make the evaluation of slopestability. After analyzing the expansion mode of action of force on the slopes, the firstunder the relevant formulas and laboratory tests made on the expansion force initiallyidentified, and then limit equilibrium analysis theory in gravity stress respectively,under the force of gravity stress and expansion joint action of two cases slope stabilityanalysis made, which also established a relationship between the security forces and theexpansion coefficient K between the inverse of expansive soil expansion force tofinalize the expansion force.After considering the impact of the expansion force of theslope stability analysis were used limit equilibrium theory and three-dimensionalnumerical model of slope stability analysis, combined with monitoring data usingartificial neural network prediction model, to predict future trends slopes, studies haveshown that:1、the expansion force of volume force, after the spread of the ramp portion ofthe internal expansion forces will cancel each other out, attenuation, spread upward inthe process, does not consider the impact of the spread of torque, the expansion forcewill propagate to the surface force in the form of overburden.2、In the limit equilibrium analyzes the relationship between theory and securityforces thrust reversers expansion coefficient between the K value can be seen, the lossfell force expansion force generated by the expansion force of the vertical componentof the force due to largely offset the decline, but the decline in force landslide byreducing the corresponding overlying load is reduced, i.e. the expansion force underthe influence of the stress level increases surface slip differential. 3、In considering the expansion force of circumstances, three-dimensionalnumerical simulation analysis and monitoring of slope deformation of slopedeformation of the basic agreement.4、In considering the temperature, humidity and time of the three variables, theuse of artificial neural network prediction model for slope trends forecast by the line,from the point of view of the volatility of the data, the basic agreement with themonitoring data, can better predict future slope deformation trends, provide referencefor project management.