Analysis On Slope Stability Of Pingerguan Joint Inspection Building In Yunnan

China is a vast country with complicated geological conditions.With the continuous development of our society,many buildings,water conservancy,highways,bridges and other facilities have been built.In the process of construction,it is inevitable to encounter problems such as slope stability,which have a certain impact on social development and production and life.Rainfall and earthquakes are the main causes of slope problems.In this paper,taking the slope engineering of Pingerguan joint inspection building in Guangxi as the research object,three kinds of slope reinforcement measures are calculated and analyzed,and then reasonable reinforcement measures are determined.Afterwards,the influence of rainfall and earthquake on slope stability is studied.Specific research contents are as follows:(1)By consulting literature,the factors affecting slope stability are summarized,and the slope reinforcement measures and unsaturated seepage theory are summarized,which provides a theoretical basis for slope stability analysis.(2)Using numerical simulation method,the stability calculation and analysis of the slope reinforced by different anchoring lengths and angles are carried out.It is found that there is a critical value in the anchoring length of the anchor rod.When the critical value is exceeded,the safety factor of the slope is basically unchanged,and the anchoring angle has the optimal value.(3)Through the observation section,we can observe the distribution law of soil volume moisture content in the slope,and analyze the influence of rainfall intensity and soil permeability anisotropy on slope stability.(4)According to the characteristics of seismic load,the forms of dynamic failure of slope are summarized,the mechanism of slope instability and the method of stability analysis are expounded,and the variation of acceleration and horizontal displacement of observation points at different positions of slope under different earthquake magnitude are studied.Finally,the variation law of safety factor of slope under different earthquake magnitude is analyzed.In conclusion,firstly analyzed the safety and stability of the slope under different reinforcement schemes,the influence of optimal bolting reinforcement parmeters on slope stability was studied.Secondly,the influence characteristics of rainfall and earthquake on slope safety coefficient are analyzed,the research results providesome theoretical references for the design of slope reinforcement measures.