关键词: 公路土质路堑边坡;风险评估;层次分析法;CRITIC法;

Abstract: Slopes along the highway are characterized by large quantity, frequent disasters and great harm, so how to quickly analyze and evaluate the safety risk of highway soil cutting slope is particularly urgent.By summing up the failure modes and influencing factors of stability of highway soil cutting slope, this paper summarized the fatal factors and assessment indexes of this kind of slope risk assessment.Based on the index data fluctuation and correlation, this paper introduced the analytic hierarchy process and constructs a risk assessment model of highway soil cutting slope.And through the CRITIC method, the weight of each index in the assessment model was optimized by using the difference and conflict of data.In addition, combined with the evaluation model of protection engineering based on index weight method, the assessment system of highway soil cutting slope was perfected.Finally, the assessment system was verified by 11 highway soil cutting slopes in S359 Provincial Road of Shenzhen City.The results showed that the assessment accuracy was 90.90%,showing that the highway soil cutting slope assessment model was reliable.The risk assessment system makes up for a gap in the comprehensive assessment of natural conditions, hazard degree and protection engineering in slope risk assessment, and provides theoretical support for practical projects

Key words: soil cutting slope along the highway; risk assessment; analytic hierarchy process; CRITIC method;