土与强风化岩双元边坡圆弧-平面破坏模式与支护设计方法

为了探究土与强风化岩边坡中强风化岩不破坏的临界坡率及稳定性判断方法，基于济南地层，得出适用于数值模拟的土层参数，并利用强度折减法求出边坡的临界坡率，为施工提供参考。针对强风化岩不破坏的边坡，运用改进的瑞典条分法求出边坡安全系数解析解，并利用滑移线场法求出滑移线，为安全系数解析解的应用提供依据。结果表明，岩层厚度超过边坡高度1/2或坡率大于1:0.5时，强风化岩一定破坏；解析解得出的安全系数偏小，有利于工程安全；针对土与强风化岩边坡，文中结果可确定边坡破坏区域，设计支护方案。

Arc-plane failure mode and support design method of dual-element slope of soil and strongly weathered rock

To investigate the non-destructive critical slope rate and stability assessment method for strongly weathered rock slopes with soil and highly weathered rock, based on Jinan''s strata, suitable soil layer parameters for numerical simulation are determined. The strength reduction method is then applied to calculate the critical slope rate of the slope, providing reference for construction. The analytical solution for the slope''s safety factor is obtained using the improved Swedish slice method and the slip line field method. These analytical solutions provide essential prerequisties for safety factor applications. Results show that strongly weathered rock experiences failure when the rock strata thickness exceeds half of the slope height or the slope ratio surpasses 1:0.5. The obtained safety factor from the analytical solution tends to be conservative, contributing to enhanced engineering safety. For soil and strongly weathered rock slope, the research findings help identify the failure area, facilitating the design of support schemes.