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Stability Analysis And Support Scheme Optimization Of Highway High And Steep Rock

Posted on:2020-02-02Degree:MasterType:Thesis
Country:ChinaCandidate:C WangFull Text:PDF
GTID:2392330602458725Subject:Road and Railway Engineering
Abstract/Summary:PDF Full Text Request
The high-steep slope has the advantages of high height,steep slope of the overall slope,bare surface leakage,serious damage and serious damage,and the internal geological complexity of the slope,joint fissure development,stability problems are more prominent,if the slope is not timely The overall reinforcement treatment may cause geological disasters such as landslides and collapses.Taking the high and steep slope as an example,this paper first analyzes the type of slope,the scale of the slope,the influencing factors and the form of failure,and the reasons for its formation.According to the characteristics of the project and the actual situation of the high-steep slope site survey,the stability analysis of the rock mass structure and the analysis of the deformation instability are carried out on the high-steep slope.It is found that the high-steep mountain slope is in a basic safe state,and the local section is at Extremely unsafe,need to be reinforced in time.Therefore,the finite element model of natural slope is established to explore the damage form of natural slope under the influence of gravity factor and rainwater factor.The calculated results of the displacement,stress and strain analysis of the high-steep slope under self-weight conditions and the high and steep slopes in the presence or absence of rainwater and the horizontal draining of the slope feet are based on the results.Which provides a theoretical basis for the overall reinforcement treatment plan of the slope,ensuring that the slope after the reinforcement treatment is in a long-term stable state,and based on the principles of economic rationality and local conditions,the overall treatment plan for slopes is proposed:system bolt reinforcement+slope shotcrete measures,and slope protection+drainage.According to the analysis results of the high-steep slope rolling stone curve and the actual investigation on the site,the overall optimization scheme of different reinforcement measures for the slope treatment plan is carried out.Aiming at the scheme of high-steep slope reinforcement treatment,the numerical simulation analysis of the stability of high-steep mountain slope reinforcement was carried out by strength reduction method.The stability analysis of the reinforcement is analyzed,the stability of the high-steep slope is evaluated,the whole slope has no large deformation,the shaping penetration area is reduced,the deformation is obviously controlled,and the reinforcement project improves the high-steep mountain slope very well.Stability.The reinforced slope is monitored and the monitoring data in the whole slope construction process is analyzed to further verify the effectiveness of the high-steep mountain slope reinforcement scheme.Based on the stability analysis results of the high-stiffoess slope after the overall reinforcement under heavy rain conditions,the reinforcement optimization design scheme is proposed and verified by finite element software.The stability analysis results of the high-steep mountain slope reinforcement carried out in this paper can be referenced by similar projects.
Keywords/Search Tags:high-steep mountain, expressway, deformation instability, reinforcement treatment, numerical simulati
PDF Full Text Request
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