Preview

PDF Pending copyright assessment - Request a copy 5Mb

Pit-lakes are gaining increasing attention as a method for large open-pit mine rehabilitation. Large void spaces are filled with water, providing a confining pressure on mine surfaces, decreasing the risk of slope failure, while also reducing the required level of slope maintenance. Although pit lake rehabilitation scenarios present a long-term option for maintaining the stability of mine slopes, soils susceptible to creep under increasing loads due to mine filling presents a risk to long term stability. From a geotechnical point of view, soil creep is generally attributed to slow, downslope movement, where creep movements often decelerate until a critical strain produces a creep failure event. In this research, time-dependent slope stability models of creep-sensitive soils are presented, identifying varying levels of deformation based on mine filling rates and durations. The ability to achieve a final stable landform under a variety of long-term creep conditions is discussed.

Item Type:	Refereed Conference Paper
Keywords:	scaled boundary finite element method, slope stability, spatial variation, image-based analysis, quadtreee mesh
Research Division:	Engineering
Research Group:	Civil engineering
Research Field:	Civil geotechnical engineering
Objective Division:	Energy
Objective Group:	Mining and extraction of energy resources
Objective Field:	Coal mining and extraction
UTAS Author:	Dyson, AP (Dr Ashley Dyson)
UTAS Author:	Tolooiyan, A (Dr Ali Tolooiyan)
ID Code:	151588
Year Published:	2022
Deposited By:	Engineering
Deposited On:	2022-08-02
Last Modified:	2023-01-10
Downloads:	0