西南山区公路顺层段某崩塌堆积体的稳定性评价

Stability Evaluation of a Collapse Accumulation Body in the Highway Bedding Section in the Southwestern Mountainous Areas

文章结合米仓山区一级公路上的由顺层崩滑形成的堆积体,以极限平衡方法系统分析评价了该堆积体的稳定性,并对稳定性起关键作用的土体抗剪强度进行了重点研究。顺层路段往往容易发育中大型滑坡、堆积体等不良地质,堆积体整体稳定的情况下,浅表土层在外在诱发条件下仍会有溜塌,需要针对性防护处治。文章总结了西南山区公路顺层段某崩塌堆积体的稳定性调查、评价方面的注意事项和建议,可供其他堆积体评价参考。

Based on the accumulation body formed by bedding collapse on the first-class highway in Micang mountainous area,this paper systematically analyzes and evaluates the stability of the accumulation body by limit equilibrium method,and focuses on the shear strength of soil mass which plays a key role in stability.Bedding sections are often prone to the development of unfavorable geological conditions such as medium to large-scale landslides and accumulation bodies.Under the overall stability of the accumulation bodies,the shallow soil layer will still slide under the external induced conditions,which needs targeted protection and treatment.This paper summarizes precautions and suggestions on the stability investigation and evaluation of a collapse accumulation body in the highway bedding section in the southwestern mountainous area,which can be used as a reference for the evaluation of other accumulation bodies.