Abstract
Recently, a micropiling reinforced soil method has been often used in the slope stability works. Its reinforcing mechanism, however, is still not clear and there is a confusion in different types of design methods.
In this paper the ground confining effect by the micropiling reinforced soil method is discussed with the in site measuring data of the slope deformation behavior at the express highway construction work. The roles of micropiles as the tensile reinforcing and the restraint of stress relaxation are clearly shown and then these results will be reflected for improving the design method for the slope stability.
