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在缺少钻孔和平洞勘探资料的条件下,通过现场调查和测量获得的坡体特征确定滑面形态及位置。通过仿真压密试验,获得不同压力下滑带土的孔隙比,用有限元计算滑面正应力,根据仿真样剪切试验得到滑带土强度参数。在此基础上,刚体极限平衡法计算的稳定性系数表明,天然工况下坡体稳定,蓄水工况下将失稳破坏。
In the absence of borehole and flat-hole exploration data, the shape and location of the slip surface are determined by the characteristics of the slope obtained from field surveys and measurements. Through the simulation compaction test, the void ratio of sliding zone soil under different pressures is obtained, the normal stress of sliding surface is calculated by finite element method, and the strength parameters of sliding zone soil are obtained according to the simulation shear test. On this basis, the stability coefficient calculated by the rigid body limit equilibrium method shows that the slope body is stable under natural conditions and destabilizes under water storage conditions.