Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Slope stability analysis of mine waste dumps at a mine site in Southeastern Nigeria
Abstract This paper presents results on the stability of slopes of the mine tailing dumps at Enyigba, Southeastern Nigeria. The geotechnical parameters of the slopes were investigated, and stability analysis was carried out with GeoStudio® 2012 developed by Geoslope International Limited. The slope materials were composed of gravel (1.42–30.13%), sand (15.94–33.34%), silt (9.75–26.87%) and clay (32.1–56.25%). The materials have LL, PL and PI ranging from 24 to 49%, 24 to 35% and 9 to 26% respectively, signifying low to medium plastic materials. These results agree with the soil low permeability ($ 10^{−4} $ – $ 10^{−8} $ cm/s) recorded. The MDD and OMC of the material ranged from 1.86 to 2.22 g/$ cm^{3} $ and 13.45 to 17.05%, while cohesion and internal friction angle were recorded to be 13–34 kN/$ m^{2} $ and 8–37° respectively; implying moderately durable materials capable of slip and shear failures. XRD confirmed the presence of swelling mineral (illite) in soil material, hinting at clay plasticity on absorption of moisture, which is one of the factors influencing all forms of mass wasting. The slopes’ computed factor of safety ranged from 0.8 to 1.33, suggesting critical to poor slope stability when exposed to landslide triggering agents. Hence, slope stabilization is required on the mine tailing dumps at Enyigba to prevent major landslide occurrence.
Slope stability analysis of mine waste dumps at a mine site in Southeastern Nigeria
Abstract This paper presents results on the stability of slopes of the mine tailing dumps at Enyigba, Southeastern Nigeria. The geotechnical parameters of the slopes were investigated, and stability analysis was carried out with GeoStudio® 2012 developed by Geoslope International Limited. The slope materials were composed of gravel (1.42–30.13%), sand (15.94–33.34%), silt (9.75–26.87%) and clay (32.1–56.25%). The materials have LL, PL and PI ranging from 24 to 49%, 24 to 35% and 9 to 26% respectively, signifying low to medium plastic materials. These results agree with the soil low permeability ($ 10^{−4} $ – $ 10^{−8} $ cm/s) recorded. The MDD and OMC of the material ranged from 1.86 to 2.22 g/$ cm^{3} $ and 13.45 to 17.05%, while cohesion and internal friction angle were recorded to be 13–34 kN/$ m^{2} $ and 8–37° respectively; implying moderately durable materials capable of slip and shear failures. XRD confirmed the presence of swelling mineral (illite) in soil material, hinting at clay plasticity on absorption of moisture, which is one of the factors influencing all forms of mass wasting. The slopes’ computed factor of safety ranged from 0.8 to 1.33, suggesting critical to poor slope stability when exposed to landslide triggering agents. Hence, slope stabilization is required on the mine tailing dumps at Enyigba to prevent major landslide occurrence.
Slope stability analysis of mine waste dumps at a mine site in Southeastern Nigeria
Igwe, Ogbonnaya (Autor:in) / Chukwu, Chidinma (Autor:in)
2018
Aufsatz (Zeitschrift)
Englisch
Slope stability analysis of mine waste dumps at a mine site in Southeastern Nigeria
| Online Contents | 2018
| Online Contents | 1984
Recultivation of opencast coal mine waste dumps
| British Library Conference Proceedings | 1997
Modelling tailings dams and mine waste dumps failures
| Online Contents | 2002
Stabilization of Mine Waste Dumps Through Bio-Engineering
| Springer Verlag | 2024