太平顶景区悬崖稳定性及防治措施研究

Research on Cliff Stability and Preventive Measures in Taiping Top Scenic Spot

本文以某工程为例,结合现场勘查、理论分析和FLAC 3D数值模拟在各工况下对悬崖整体稳定性进行评估,研究表明在未加固条件下,工况2为最危险工况,崖体有可能出现局部失稳,但各工况下崖体整体稳定性较好,悬崖大区域是稳定的;从悬崖局部模型稳定性分析可得,在悬崖边缘1m范围内,不能建造建筑物;在悬崖边缘15m范围内无需对崖体进行支护,便可建造建筑物;研究最终表明虽然崖体现状稳定,但安全储备不足,存在局部失稳的可能,针对此,给出4种加固防护方案,从而保证悬崖整体具有较高的安全性。

Taking a project as an example, this paper evaluates the overall stability of the cliff under various working conditions by combining site investigation, theoretical analysis and FLAC 3D numerical simulation. The research shows that under unreinforced conditions,working condition 2 is the most dangerous working condition, and the cliff body may have local instability, but the overall stability of the cliff body is better under various working conditions, and the large cliff area is stable. From the analysis of the stability of the local cliff model, it can be concluded that within 1m of the cliff edge, buildings can not be built; buildings can be built without the need to support the cliffs within 15m of the edge of the cliffs; the study finally shows that though the cliff is in stable condition, its safety reserve is insufficient, and there is the possibility of local instability. According to this, four kinds of reinforcement protection schemes are given, so as to ensure the overall cliff has higher safety.