顺倾结构面红层岩质边坡稳定性分析及治理

Stability Analysis and Treatment of Red-bed Rock Slope of Dipping Structural Plane

含顺倾结构面的红层岩质边坡开挖过程中极易发生边坡失稳问题。本文以东南地区一公路红层岩质边坡为研究对象,分析该类边坡的致灾因子,并针对该边坡沿顺倾结构面的滑动破坏模式,提出坡脚堆载反压、刷方减载、夯填裂缝、设置排水工程和锚固工程的综合治理措施。通过建立滑坡模型,采用室内试验法、反算法和极限平衡法确定滑面计算参数和滑坡推力,并对治理措施实施过程中边坡稳定性进行分析验算,论证治理措施的可行性。监测数据表明,治理效果较为理想。

In the process of excavation of red-bed rock slope with dipping structural plane,the problem of slope instability is easy to occur.In this paper,a red-bed rock slope of a highway in southeast China is taken as the research object to analyze the disaster causing factors of this kind of slope.According to the sliding failure mode of the slope along the dipping structural plane,the comprehensive treatment measures are put forward,such as the backfill at the slope toe,the load reduction by brushing,the tamping and filling of cracks,the setting of drainage engineering and anchoring engineering.Through the establishment of landslide model,laboratory test method,inverse algorithm and limit equilibrium method are used to determine the calculation parameters of sliding surface and landslide thrust,and the slope stability in the implementation process of the treatment measures is analyzed and checked to demonstrate the feasibility of the treatment measures.The monitoring data show that the treatment effect is relatively ideal.