Study On Rockfall Hazard Assessment Of Mountainous Highway Based On The Digital Image Processing

Rockfall disaster as one of the major disasters in mountainous highway,it's harmful to the road and traffic safety.In order to reduce the hazards of road traffic hazards,it is necessary to carry out the risk assessment of the potential collapse points along the highway and make preventive measures in advance.The surface fissures,structural planes and other information are important factors that affect the slope stability.This paper intends to use the digital image processing technology to obtain the above information,to provide the basis for the assessment of the risk of collapse disaster.Firstly,this paper nvestigates the slope of S102 from Zhashui to Xunyang,and shoot a large number of potential landslide images.Based on MATLAB software,using Gabor filter,Hough transform and interactive segmentation algorithm to calculate the irregular fissure size,structural plane spacing and dangerous rock mass scale,and the visual interface is designed based on MATLAB GUI.Then,according to the slope image of K136+210,the volume of dangerous rock mass on the slope is calculated by using the econometric estimation module in the image processing system,and the stability evaluation is carried out by rigid body equilibrium equilibrium theory,and the corresponding prevention and control measures are put forward.Finally,combined with the actual situation of the study area,select the lithology,structural plane spacing,dangerous rock mass scale,unloading fissure width,slope slope,slope height,adverse structural plane inclination,weathering,annual average rainfall The 13 influencing factors,such as protective measures,surface water scouring,groundwater and earthquake intensity,were used as the evaluation index of the disaster risk of the study area,and the weight of each index was determined by AHP.Based on the comprehensive fuzzy evaluat ion method,Predictive evaluation.