Abstract: The disclosure provides a method for determining a slope slip plane with a gently-inclined soft interlayer, including: S1, determining a curve formed with a slip arc of a trailing edge tearing plane, a soft interlayer plane and a slip arc of a leading edge shear opening as a slope slip plane; S2, calculating a slip plane stability coefficient; S3, determination of a position of the gently-inclined soft interlayer plane: if the slip plane stability coefficient is less than 1 but close to 1, determining that the position of the slope slip plane is accurate; otherwise, moving the position of the soft interlayer plane and repeating steps S1 and S2, until the slip plane stability coefficient is less than 1 and close to 1. The method is simple, and has a high accuracy for determining a non-circular slip plane with a soft interlayer as a bottom slip plane.

Abstract: The present disclosure provides a method for treating a high and steep landslide in a mine with a gently-inclined and weak interlayer. The method comprises the following steps as S1˜S4: S1. excavating small-benches on stable bedrock below a weak interlayer to form working surfaces for risk elimination process of landslide; S2. conducting the risk elimination process; S3. transporting a landslide accumulation body to a crushing station or a rock dump site; S4. repeating steps S1 to S3, and continuously advancing risk elimination along the working surfaces for the risk elimination process of landslide until treatment of the high and steep landslide in a mine with a gently-inclined and weak interlayer is completed. The method can treat the landslide from the root cause, avoiding a secondary landslide. The method does not affect structures and buildings in a mine, ensuring safety of personnel and excavator.

Abstract: The disclosure provides a method for determining a slope slip plane with a gently-inclined soft interlayer, including: S1, determining a curve formed with a slip arc of a trailing edge tearing plane, a soft interlayer plane and a slip arc of a leading edge shear opening as a slope slip plane; S2, calculating a slip plane stability coefficient; S3, determination of a position of the gently-inclined soft interlayer plane: if the slip plane stability coefficient is less than 1 but close to 1, determining that the position of the slope slip plane is accurate; otherwise, moving the position of the soft interlayer plane and repeating steps S1 and S2, until the slip plane stability coefficient is less than 1 and close to 1. The method is simple, and has a high accuracy for determining a non-circular slip plane with a soft interlayer as a bottom slip plane.