Research On The Safety Evaluation And Prevention Measures Of Road Water Hazards In Mountainous Areas Of Pingxiang City

The topography of Pingxiang City is dominated by mountainous hills.The mountain roads built have a large number of fills and excavation slopes.Continuous rainfall or heavy rainfall weather coupled with complex geological conditions have caused serious water damage to mountain roads.At present,Pingxiang City's highway flood disaster management is mainly based on post-disaster repair.This method not only causes huge economic losses,but also makes it difficult to ensure the effective operation of the highway.This article takes the mountain road water damage in Pingxiang City as the research object.Firstly,analyzes the types and causes of water damage through a large number of road water damage field investigations;secondly,the mountain road water damage is divided into highway slopes,drainage systems,protection engineering,bridge and culvert engineering and asphalt pavement,etc.Five types of water hazards,determine the main influencing factors of each type: engineering geology,hydrological environment,design and construction,maintenance management,slope shape and other factors,and establish a safety evaluation system for each type of water hazard based on fuzzy mathematics theory and analytic hierarchy process to construct highways Water hazard multi-factor safety evaluation system,and then take the highway slope safety evaluation system as an example to verify the actual road slope collapse engineering case of S225K64+700.The result shows that the highway slope is in an under-stable state,which is consistent with the actual situation.Finally,in order to implement the guiding principle of "prevention first,combined prevention and control",based on the mountain road water hazard safety evaluation system,the stability of the road is predicted in advance,combined with the common preventive maintenance management measures and road slopes of mountain roads Treatment measures to strengthen the role of pre-disaster prevention;at the same time,the maintenance and repair measures of S225K64+700 highway slopes have been formulated to strengthen the stability of the highway slopes,reduce the recurrence rate of road floods,and protect the safety of passing pedestrians and vehicles.