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Influence Law And Sensitivity Analysis Of Main Control Factors For Anti-dip Slope Deformation Under Seismic Action

Posted on:2019-06-15Degree:MasterType:Thesis
Country:ChinaCandidate:D N WuFull Text:PDF
GTID:2370330548479621Subject:Civil engineering
Abstract/Summary:PDF Full Text Request
For a long time,in high frequency and high intensity areas,the earthquake crack mountain experienced several different degrees of earthquake test.The landslides and landslides caused by the earthquake have brought inestimable loss to the region's ecology,humanity and economy.Generally speaking,the mountain area in the same area has an approximate engineering geological environment(lithology,geological structure and hydrogeology).In addition,the energy shock mode of the ground motion caused by the earthquake is almost the same.However,in the actual situation,all the earthquakes in the high frequency seismic area did not occur collapse and instability.Through the analysis of the engineering geological conditions of the slope,the reason for the cause of different seismic disaster bearing capacity of the slope should be attributed mainly to the difference of its structural elements and the result of the interaction between the structural elements and the seismic dynamic characteristics among the earthquakes in each period.The characteristics of the anti dip slope are much larger than the hidden slope.In the early period of large amount of deformation accumulation,this kind of slope tends to be long-term and continuous deformation,but the sign of the early instability is not obvious,but once the instability is usually accompanied by the characteristics of immediate failure,deep penetration and large collapse pattern.Due to the unique structure which is opposite to the inclination direction of the slope,the deformation and instability of the reverse slope is a long-term evolution process under the action of gravity,and under the action of the earthquake,it will undoubtedly accelerate the life cycle of the deformation of the reverse slope to the instability.However,at the present stage,the research results of the deformation of the reverse slope under the action of earthquake are very few,which provide support for the monitoring and monitoring of the high frequency and high intensity zones and the lack of the threshold for monitoring and warning.Therefore,it is necessary to further study the deformation of such slopes and the main controlling factors of the corresponding deformation.In this paper,the deformation of anti dip slope under earthquake is studied from many dimensions.First,starting with the factors affecting the main control of the deformation,through a large number of cases,the classification of the main control factors and the optimum range of the horizontal distribution of the reverse slope under the earthquake action are extracted and the optimal range of the level distribution of each factor is obtained.Secondly,the influence law of the deformation is started with the experimental results of numerical simulation,respectively.The deformation response of the space position of the slope,the influence of the main controlling factors under the earthquake action and the influence of the structural elements under the gravity state of the three dimensions are discussed in turn.At the same time,the deformation sensitivity of the main controlling factors of the reverse slope under the action of the earthquake is started.Through the orthogonal test design,the path analysis and the numerical simulation,the sensitivity of the main control factors and the interaction factors to the slope deformation is studied.Finally,the slope of the shaguan traddle trough is used as the research area,and the influence law of the main control factors is verified by the means of numerical simulation and the inversion of monitoring data.As well as the deformation sensitivity of the factors,and further based on this,the key control suggestions for deformation monitoring of the anti high dip slope with high intensity and high frequency are put forward.
Keywords/Search Tags:anti dip slope, earthquake, deformation, influence law, sensitivity, monitoring suggestion
PDF Full Text Request
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