Stability analysis method of slope based on minimum potential energy principle is a new kind of method in developing. A new stability analysis method of slope

which concerns reinforcement of slope with anchor bolt or prestressed cable and based on minimum potential energy principle

is established. Furthermore

an approximate model on shear potential energy in the district beneath slipping surface is presented too. Case studies show: (1) No matter that slope has been reinforced with anchor bolt or prestressed cables or not

results from minimum potential energy method have a good coincidence with that from limit equilibrium method

so as to show the new method is applicable. (2) Shear potential energy from the approximate model is considered whether or not

it is nearly no influence on safety factor of slope with just single stratum; but it has clear influence on that of slope with more than one stratum. In general

the concept of minimum potential energy method of slope stability is clear and reasonable; solving process for safety factor is concise; and the expression of safety factor can be expressed as explicit function. Compared with limit equilibrium method and finite element method

and so on

it has clear value for engineering application.