Abstract: Element free method(EFM), which is based on moving least squares method,is a gridless method to treat boundary value problems in geotechnique engineering such as dam stability analysis, slope analysis and progressive crack growth. Different from traditional numerical methods such as finite element method, EFM requires only nodes and a description of the external and internal boundaries and interfaces of the model, no element connectivity is needed. The mathematical basis of EFM is moving least squares met...