Slope stability analysis at disposal mine area using Morgenstern price method

• Main Authors: Prabowo, Heri, Suryani, Irma, Sabilillah, Insani
• Format: Conference Proceeding
• Language: English
• Subjects: Design factors; Landslides; Mathematical analysis; Redesign; Safety factors; Slope stability; Stability analysis
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0184136

Disposal must be planned properly to reduce the adverse effects that occur due to factors that destabilize the slope. During the formation of this disposal, there was a landslide caused by the base disposal and many weak areas on the mining slope. Research is needed to identify the occurrence of landslides at the disposal site so that the slopes become stable and safe. In overcoming this problem, a safety factor (disposal plan design) is carried out so that it is safe (FK 1.25). In the process of making a disposal plan using the Morgenstern-price method. Calculation of safe value using geostudio 2007 software which is divided into several sections, namely A, B, C, D, and E.Based on the calculation of the safety factor value, the FK value is>1.25, with an overall slope angle of 3° in the area of several sections such as sections A, B, C, D, and E, with safe slope conditions and the volume of overburden material that can be accommodated in the disposal plan. before redesign, that is 38.912.12 bcm with an area of 140.47 ha and after redesigning the volume that can be accommodated is 22.260.10 bcm with an area of 140.47 ha. It is recommended that disposal slope formation follow the redesigned dimensions so that disposal slope stability is achieved that meets safe criteria.