Study On The Formation And Evolution Mechanism Of Song Jiayao Landslide

Loess landslide is one of the most frequently occurring geological disasters in loess area.The formation and mechanism of loess landslide is complicated and multivariate because of its unique properties of different soil.There are a lot of loess landslides in the qishan section of the north bank of the weihe river.The instability of these landslides seriously threatens the safety of the life and property of the inhabitants and restricts the local economic development.Carry out zones Song jiayao landslide formation mechanism,evolution can understand the formation and mechanism of loess landslide here,also can provide theoretical basis for project management,put forward effective Suggestions,to ensure the safety of people's life and property.Before the study,we carried out the actual investigation,the field exploration and the laboratory test,and then carried out the theoretical calculation and numerical simulation.The formation conditions,evolution process and formation mechanism of the landslide in song jiayao landslide have been studied in depth.The specific contents are as follows:(1)Using engineering geology knowledge,based on field investigation,field exploration and existing historical data,the basic characteristics and deformation development characteristics of song jiayao landslide were investigated.Analysis Song jiayao landslide formation and landform,stratum lithology,ancient landslide slip zone,rainfall and groundwater,the relationship between seismic action and human engineering activities,combined with the existing theory to clarify the conditions of the landslide formation.(2)Based on the basic characteristics of the landslide and the analysis of the factors affecting the landslide formation,This paper discusses the evolution mechanism of landslide from the perspective of the integrated evolution of song jiayao landslide,and presents a dynamic process of landslide gestation,slippage and stagnation.(3)the use of MIDAS fem software for simulating Song jiayao landslide analysis,through the analysis of the displacement deformation,deformation and plastic deformation of the shear strain increment and displacement increment distribution verify the formation conditions and mechanism.