Research On Optimization Of A Slope Reinforcement Plan In Panzhou City

Along with the advancement of urbanization,the plate of city in the construction of the mountain city,there are many tall,steep slope,artificial slope of these cities,the urban construction engineering environment and artificial disturbance strongly influenced,the buckling destruction may not strictly follow the process of natural slope instability and a sudden destruction in the short term,probably to people's life and property bring great loss.With the development of urbanization,more and more mountain cities begin to build on a large scale.Based on a slope project in Pan Zhou city as an engineering example,through qualitative and quantitative analysis of the stability of the slope,reinforcement of a slope,provide two kinds of slope protection technology programs for technical and economic comparison,through the construction of each program of the degree of difficulty,economy,environment,etc.,the selection of the optimal program,the use of software named Flac to simulate the slope displacement field,stress field,and calculation of the stability coefficient after reinforcementof a slope,combined with monitoring and measurement data to analyze and evaluate the reinforcement effect,for similar hydrogeology engineering geological conditions slope protection design to provide technical basis.The main achievements of this paper are as follows:1.The destruction of the summary should type and slope deformation and failure mode;The factors affecting the stability of slope include the structural plane,the change of slope shape,the change of rock mass mechanical properties and the direct action of various external forces.Summarized the existing methods for analyzing the stability of the border,including qualitative analysis and quantitative analysis.2.Based on the polar projection map,the side slope is a straight slope,and the slope Angle is greater than the structural plane Angle,and the slope is prone to plane failure along the plane.In addition,because of its high slope degree of slope,and its stability is controlled by the rock mass strength.Based on the limit equilibrium method,the slope is stable in the natural state,while the saturationstate is unstable.By using the traditional limit equilibrium method and the numerical simulation based on the finite difference method,the numerical simulation method is reliable,and the software is used to simulate and optimize the slope support effect.3.Section A-C slope is a stable slope with an outward-sloping structural surface.For the urban rock slope,the unstable slope should be strengthened and treated,while the slope in A stable state with no deformation or small deformation should be maintained in the original state of the system.In order to maintain the mechanical properties of the rock slope,considering that the slope is affected by blasting and the surface rock mass is broken.Also exposed rock mass excavation,rock mass affected by rain and so on for a long time,to prevent local along the slope Angle of structural plane combination line falling wedge,and rock mass affected by the mechanical parameters and reduce the external force and slope stability,according to "code for building slope engineering technology in the slope safety factor,given by the usual under special circumstances,such as damage after building the serious consequences of the slope,etc.)safety factor can be appropriately increased.It is recommended that the slope be closed and protected.4.By using two methods(anti-slide pile and prestressed anchor cable)to simulate the reinforcement of the slope,the safety coefficient is improved and the maximum displacement is effectively reduced.However,the cost of anti-slide pile reinforcement is higher than that of anchor cable,and the effect of bolt reinforcement is better than that of anti-slide pile.The method of prestressed anchor rod(cable)is selected for reinforcement.5.By changing the anchorage parameters in turn,the safety coefficient,displacement and stress of the two sections of the slope corresponding to different parameters are simulated,and a reasonable anchorage scheme is given,which provides reference for the reinforcement of the same type of projects.