| China's mountainous areas are rich in tourism resources,but their terrain is often steep and rugged,and their geological conditions are usually complex.Under certain conditions,various geological disasters,including landslides,collapses and debris flows,may occur.Among them,the collapse disaster has the characteristics of concealment,sudden occurrence,calamity and so on.Taking the scenic spot of Banruodao in Shenxianju scenic spot in Zhejiang Province as the research object,this paper establishes the corresponding geological model,evaluates the stability of the dangerous rock mass of the scenic spot by using the technology of field investigation and numerical simulation,calculates the impact scope of the collapse using Rockyfor3D software,and provides a theoretical basis for the prevention and control work of the scenic spot.The main research work and results are as follows:(1)The engineering geological conditions of the study area are analyzed in situ,the distribution of dangerous rock mass and the characteristics of the main structural plane are ascertained,and the stability of rock mass is evaluated.(2)The geological model is established by using UAV tilt photography technology;the stress state and plastic zone of rock mass are obtained by using finite difference software Flac3D to simulate and calculate the geological model;the geological model of dangerous rock mass is simulated by using discrete element software 3DEC team,and the information of failure mode of dangerous rock mass is obtained,and the stability of rock mass is evaluated quantitatively and comprehensively.(3)The unstable rock mass determined in the evaluation is regarded as the source area of the collapse.On the three-dimensional level,the motion characteristics(velocity,energy,etc.)and the influence range of the collapse are simulated and calculated by Rockyfor3D software. |
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