Therefore, it’s essential to carry out the study on the stability of the slope containing the weak interlayer.This text will take the typical slope as example, adopting numerical analysis method to create the numerical models with different slope heights、slope angles、weak interlayer inclinations、cohesion、friction angle in the ANSYS software, analyzing the displacement map and solving the safety factor of the model in the FLAC3D software. Large amounts of data confirmed that the instability and sliding failure of the slope occurred in the weak interlayer, joints, faults and other structural surface areas mostly, especially in the soft interlayer, the weak interlayer often become the controlling factors of landslide instability. The slope stability problem is very conspicuous because of special geological, geomorphological conditions and an increasingly human engineering activities. Abstract: With the rapid development of the national economy, China’s infrastructure construction has reached an unprecedented peak, more and more slopes are excavated in the rocks.
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