Analysis And Treatment Method Of Rock Slope Stability Of Highway In Chongqing Area

Based on the slope rock San Wan Road in Wanzhou District of Chongqing city as a typical analysis, on-the-spot investigation, numerical simulation analysis method, rigid body limit equilibrium method, the kinematics and other means, in-depth study of the problem of dangerous rock mass characteristics, the Chongqing area rock instability collapse instability mode, dangerous rock stability, rockfall motion path finally, dangerous rock body according to different situations, some treatment measures suggest that simple.The main contents of research:①The Chongqing area of dangerous rock mass characteristicsGeological lithology in Chongqing area by soft and hard rock layers as the main feature, in the long-term weathering force and gravity, prone to differential weathering, produce crack deformation, formed. Failure analysis of this paper is mainly sand mudstone slope and stability.②The dangerous rock mass distribution and analysis of buckling modesGeological environmental conditions and rock engineering development characteristics and distribution rule, has an important relation between the deformation and failure mode and dangerous rock mass stability, formed is the joint action of internal conditions and external conditions of the results, the engineering geology of the study area environmental conditions in detail.Exploration area of rock failure is mainly in the way of sliding, toppling and falling type three basic types. This paper has done a more detailed analysis for each unstable mode.③Study on analysis method of stability of dangerous rock massEvaluation methods and influence factors of dangerous rock mass stability of dangerous rock stability analysis, from the structure shape and deformation characteristics of rock, rock surface characteristics of control of stereographic projection analysis method, analytical method to calculate the limit equilibrium analysis of rigid body.According to the study on the slope engineering geological conditions, rock body deformation and failure model, stability and risk evaluation, the study area slope rock body is basically stable to less stable state in the natural condition, possible instability.④The study area of dangerous rock slope movement path analysisThrough calculation and Simulation of rockfall path, can get the movement path, rockfall process maximum rockfall distance, kinetic energy of the collision, bounce height, however, reduced computation, simulation and calculation process of saving time and labor, to check and judge, time-consuming and laborious; in addition, path simulation can also be convenient to block set, are rockfall path simulation, can see the effect of prevention measures, and to provide basis for the prevention and treatment of dangerous rock.Rocfall software can be used to provide the basis for prevention and treatment of dangerous rock quickly, timely, can use the method of auxiliary checking, in order to improve the accuracy of.⑤Study on control measures and rockAnchorage, clear, comprehensive management support, seal rock cavity using methods such as rock measures, closed treatment on top of the fractured rock, and in the unloading zone beyond repair water drain construction, slope rockfall restraining net or retaining wall. Comparison of protective engineering scheme, feasibility of full of protective measures.