Bahaya Longsor & Cara Penanggulangannya

Abstract

Whenever a mass of soil has an inclined surface, the potential always exists for part of the soil mass slide from a higher location to lower location. Sliding will accur if shear stresses developed in the soil exceed the corresponding shear strength of the soil. This phenomenon is of importance in the case. The principle stated above, that sliding will accur if sher stresses developed in the soil exceed the corresponding shear strength the soil possesses is the simple theory, but certain practical consederations make precise stability analysis of slopes difficult in practice. In the first place, sliding may occur along a number of possible surfaces. in the second place, the shear strength of a given soil generally varies throughout time, as soil moisture and aother factor change. Obvioussly, stability analysis should be done using the smallest shear strength the soil will ever have in the future There are two techniques available for stability analysis i.e analysis of soil mass resting on an inclined layer of impermeable soil and the other analysis of stability for homogeneous soil. The first is known as the Culmann method, and t e second might be called the stability number methode. Key words: sliding, stability, shear strength