Case study of slope failure during construction of an open pit mine in Indonesia

Author:

Wang Wei1,Griffiths D.V.23

Affiliation:

1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Chengdu University of Technology, Chengdu 610059, China.

2. Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401, USA.

3. Centre for Geotechnical Science and Engineering (CGSE), The University of Newcastle, Callaghan, NSW 2308, Australia.

Abstract

This paper presents back-analyses of a failed slope at an open pit lignite mine in Muara Enim, Indonesia. The slope, which was being raised by the dumping of excavated material, failed at a dump height of 24 m, well before reaching the design height of 80 m. The primary cause of failure was determined to be the presence of a previously unknown weak layer in the foundation, combined with high excess pore pressures generated by a relatively fast dumping rate. The failure resulted in significant disruption of the mining operation, in addition to environmental problems and a high cost of remediation. Finite element analyses were performed to gain a better understanding of the influence of the weak layer at the time of the failure. The case history emphasizes the need for a thorough site investigation and the risks associated with fast dumping on saturated weak clay overlain by a stiff residual soil layer with low permeability.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

Reference15 articles.

1. ASTM. 2011a. Standard test method for standard penetration test (SPT) and split-barrel sampling of soils. ASTM standard D1586-11. ASTM International, West Conshohocken, Pa.

2. ASTM. 2011b. Standard practice for classification of soils for engineering purposes (Unified Soil Classification System). ASTM standard D2487-11. ASTM International, West Conshohocken, Pa.

3. THE ANALYSIS OF THE FAILURE OF AN EARTH DAM DURING CONSTRUCTION.

4. Liquefaction flowslides in Rocky Mountain coal mine waste dumps

5. Slope stability analysis by finite elements

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