| Slope stability has been an important subject in geotechnical engineering, and the estimation result of slope stability directly concerns the success of slope engineering. Under these circumstances, many slope-stability analysis methods come being, such as Fellenius method, Bishop method, Janbu method, SARMA method, M-P method, finite element numerical analysis method and so on. Every method has its own advantages and disadvantages. For instance, some of the assumptions for limit equilibrium method are quite different from the characters of real rocks, but due to its simple, relatively mature theory, and long-time studied, it can meet the requirements of engineering adequately. So it is still the most popular method adopted in engineering. As to slopes reinforced, limit equilibrium method of slices is still the most popular method used. It considers the anchoring force to be a pull between slices, and neglects the affection on slices that pierced by anchor piles. However the simplification is unreasonable. The paper adopts another slices method, which is called inclined slices. The slices are inclined, and paralleling with anchoring piles rather than vertical, which avoid the anchoring-affection on other slices efficiently. Considering the equilibrium of force and moment, the calculation becomes more reasonability, and the result becomes more accurate. Compared to other slope-stability calculation programs and numerical simulation, the accurate of the method adopted in the paper is proved through examples.The main contents of the paper can be summarized as follows:(1) Outlines the slope-stability analysis method and elaborates some of them.(2) Based on limit equilibrium theory, calculation formula for sloping slice is deduced.(3) According to the formula, and by applying VC++, a procedure for calculating the slope-stability factor is designed.(4) Compared to other calculation method, the result is tested through some examples. And the advantages of the method are also described.
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