209国道线太矶头人工高边坡防治工程研究

Study on prevention engineering of taijitou human-cutting high slope of 209 nationnal highway

在综合分析209国道线太矶头人工高边坡工程地质条件的基础上,首先对该边坡的稳定性进行了力学计算与评价,结果表明:北段边坡的整体稳定性安全储备不足,主要存在潜在的整体滑移及局部掉块和剥落破坏,而南段边坡则主要存在坡面局部掉块和剥落破坏.针对该边坡的实际地质地形条件、稳定性状况、边坡破坏后的危害程度等,将整个工程治理区划分为四个区段,确定了各区段具体的工程治理方案,并对细部结构进行了设计研究.最后,对加固后的边坡进行了稳定性验算,各项验算指标符合规范要求.

In this paper, the slope stability is analyzed based on comprehensive evaluation of engineering geological conditions of Taijitou human - cutting high slope of 209 nationnal highway. The study result shows that the safety factor in the north of the slope is rather small. This part will cause potential integral sliding as well as local falling stone and exfoliating destruction, and the south will only cause local falling stone and exfoliating destruction. The integral prevention engineering area is divided into four sections by comprehensively analyzing the geological and topographical conditions. The slope stability and the destruction consequences, the scheme and detail structure of each prevention engineering section are determined. Finally, the safety factor of the reinforced slope is calculated,and the result shows that the calculated indexes can meet the requirement of the specifications.