The Study On Stability Of Banxi Slate Slope In The Huaihua Section Of Changkun Passenger Transportation Railway

This paper studys the stability of Banxi slate slope under bridge abutment load,based on the project background of the Huaihua section (DK371 to DK413) of the passenger transportation railway from Changsha to Kunming. The main contents include:1. Investigate the geological background characteristics in banxi regional,and understand geological lithology,rock mass structure,structure plane occurrence,geological environment and law of slope failure.2 According to the relationship of occurrences between schistosity and slope plane,classify slope type.3. Using the methods of both the rock shear test in lab and the mass sheer test in field,study the failure law of rock and mass,and the shape of sliding surface in different slope classification.4. Use rock quality evalution system,and combine with empirical methods to study the value of rock mass parameters and determine the suggested values of the physical and mechanical parameters of rock mass.5. Taking the right bank slope of the Pears River Bridge for example and using the limit equilibrium method,study the stability of dip slate slope under the load cases of natural condition, integrated vibration effect (train and earquake) and heavy rail during the periods of pre-constuction,construction phase and operation phase.6. Taking the right bank slope of the Pears River Bridge for example and using the finite element method,study the stability of dip slate slope under the load cases of natural condition, integrated vibration effect (train and earquake) and heavy rail during the periods of pre-constuction, construction phase and operation phase.7. based on the above analysis results,evaluate the stability of Banxi dip slate slope under bridge abutment load.