The Study On Numerical Simulation And Prevention Measures Of Snow Drifting Damage Along Highway In Xinjiang

The disaster of wind and snow on the highway of China’s Xinjiang Tacheng area occurs every winter.The light affects people’s transportation,and it endangers people’s life and property safety and hinders the development of regional economy.The Mayitasi wind area is located in the Tacheng area of Xinjiang.The S201 line as an important road to Tacheng is one of the most serious areas of wind and snow disaster in Xinjiang,it suffers from wind and snow disaster every winter.This paper relies on the project of "Experimental study on the transformation mechanism of wind erosion and snow flow in highway",carries out the evaluation of the risk of wind and snow in the typical sections of S201 line in Tacheng area of Xinjiang,the gradient wind speed test and the observation of the snow shift of typical subgrade sections,and numerical simulation of the influence of snow barriers on the wind field and snow flow field in subgrade sections and summaries of Mayitasi snow storm disaster control project feasibility study of typical preventive measures.This article mainly carried out the following aspects of the work:(1)To be based on the fuzzy comprehensive evaluation theory,the evaluation indexes system of highway wind and snow risk is set up,the risk of wind blowing snow on highway is evaluated,and the example of the typical section of the S201 line in Tacheng of Xinjiang is analyzed.(2)To select the typical section of the S201 line road of the S201 line of the Tacheng area of the Mayitasi wind area of Tacheng area,and carry out the experimental study of the gradient wind speed and the snow shift of the typical section.The wind speed under different heights,the average jump height of the snow particles and the corresponding snow is measured at different wind speeds,and the wind speed is drawn after statistical regression analysis.The distributed law of snow volume along elevation is derived and empirical formula is obtained.(3)To applicate the large fluid mechanics software Ansys Fluent to simulate the subgrade section of the typical section of the Tacheng G3015 line and the S201 line in Xinjiang,and simulate the effect of the three dimensional snow fence on the wind and snow flow field of the typical subgrade sections(whole embankment and whole cutting and separated subgrade),and change the horizontal distance between the fence and the edge of the subgrade,the subgrade height,the slope rate of subgrade slope and the number of snow barriers are obtained.(4)To combine with the participation in the Feasibility Study of Mayitas Wind and Snow Disaster Management Project undertaken by the Xinjiang Traffic Science Research Institute,the typical prevention and control measures on the engineering of Mayitas wind and snow disaster management are described and introduced in this paper,such as shed,snow forest,snow fence and open section.Through the above research,we can provide the basis parameters for the control of snowstorm disaster in Xinjiang,and lay a good foundation for effective prevention and control snow damage.