Research on Optimization of Prevention and Control Measures for High Slopes along Mountainous Highway

Abstract

Highways, as critical transportation infrastructure, not only ensure the daily production and livelihood of residents but also serve as key support for promoting regional economic development and implementing the rural revitalization strategy. However, during the construction and operation of some mountainous highways, insufficient attention to slope stability issues and the lack of systematic protective design and treatment have led to frequent geological hazards such as slope instability and landslides. These incidents severely compromise road safety and endanger the lives and property of nearby resi-dents. To systematically investigate scientific prevention and control solutions for high slopes along mountainous highways, this paper selects a typical high slope on a mountainous highway as the research subject. Based on its geo-logical conditions and deformation characteristics, three feasible treatment measures are proposed: micro-pile reinforcement, double-row pile support, and steel flower pipe grouting technology. By introducing the fuzzy comprehensive evaluation method, a multi-dimensional analysis is conducted, considering factors such as engineering investment, construction duration, environmental impact, and technological maturity. The results indicate that the micro-pile reinforcement scheme offers the best overall performance. Furthermore, numerical simulation of this optimal scheme using the finite element software Midas GTS NX verifies that its deformation control effective-ness and safety factors under both natural and rainstorm conditions meet standard requirements, demonstrating notable treatment effectiveness. This study provides a reliable technical approach and practical reference for similar slope engineering projects.