Soil and vegetable analysis from the Victorian goldfields : Characterization of a potential backyard hazard
- Authors: Dowling, Kim , Harvey, G. , Waldron, H. , Garnett, D.
- Date: 2003
- Type: Text , Conference paper
- Relation: Australian Conference on Nuclear Techniques of Analysis , November 2003 p. 89-92
- Full Text:
- Description: 2003006915
Toenails : They know where you’ve been!
- Authors: Pearce, Dora , Dowling, Kim , Sim, Malcolm , McOrist, Gordon , Russell, Robert
- Date: 2007
- Type: Text , Conference paper
- Relation: Nuclear and Complementary Techniques of Analysis (NCTA) Conference Abstracts volume, Melbourne
- Full Text: false
- Description: 2003006916
Perceptions of engineering from female, secondary college students in regional Victoria
- Authors: Darby, Linda , Hall, Stephen , Dowling, Kim , Kentish, Barry
- Date: 2003
- Type: Text , Conference paper
- Relation: Paper presented at Engineering Education for a Sustainable Future 2003, Melbourne : 29th September - 1st October, 2003
- Full Text:
- Reviewed:
- Description: Survey and focus group interviews with female students in regional Victoria resulted in identification of four perceived barriers that influence them to exclude engineering as a career choice. These barriers were identified as a lack of interest in the perceived image, a lack of knowledge, a traditionally male-dominated industry, and limited recognisable role models. This paper reports on what Year 10 females are saying about the barriers and, consequently, how engineering can be promoted to overcome these barriers.
- Description: E1
- Description: 2003000550
Trace element content of vegetables grown in the Victorian goldfields characterization of a potential backyard hazard
- Authors: Harvey, G. , Dowling, Kim , Waldron, H. , Garnett, D.
- Date: 2003
- Type: Text , Conference paper
- Relation: Proc of ANA 2003 Fifth Conference on Nuclear Science and Engineering in Australia , p. p168-172
- Full Text:
- Description: 2003006913
Toenail arsenic : Incorporation patterns and biomarker potential
- Authors: Dowling, Kim , Pearce, Dora , Gerson, Andrea , Sim, Malcolm , Sutton, Stephen , Newville, Matthew
- Date: 2008
- Type: Text , Conference paper
- Relation: Paper presented at 3rd Conference on Developments in Victorian Geology and Mineralisation, Melbourne : 3rd-4th February 2008
- Full Text: false
High grade Au-Sb vein-type mineralisation at Fosterville
- Authors: Dowling, Kim , McKnight, Stafford , Kotsonis, Andrew
- Date: 2001
- Type: Text , Conference paper
- Relation: Paper presented at 3rd Conference on Developments in Victorian Geology and Mineralisation, Ballarat : 26th-27th April 2001
- Full Text: false
Turbidity caused by spillage from a dredging/mining transverse axis cutter
- Authors: Sarkar, Mridul , Bose, Neil , Sarkar, Sritama , Dowling, Kim
- Date: 2013
- Type: Text , Conference paper
- Relation: 20th World dredging congress and exhibition 2013 (WODCON XX): The art of dredging p. 636-645
- Full Text: false
- Reviewed:
Analysis of a combined circular–toppling slope failure in an open–pit
- Authors: Al Mandalawi, Maged , You, Greg , Dahlhaus, Peter , Dowling, Kim , Sabry, Mohannad
- Date: 2019
- Type: Text , Conference paper
- Relation: 2nd GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2018 - The official international congress of the Soil-Structure Interaction Group in Egypt, SSIGE 2018 p. 10-30
- Full Text: false
- Reviewed:
- Description: Most studies of rock slope failures on open–pit mines have considered either toppling or circular failure stability analysis. By comparison, complex circular–toppling failure has received much less attention in the published literature. This paper presents a study using a range of methods to investigate a failure that occurred in July 2008 in Handlebar Hill, an open–pit base metal mine, near Mt Isa, Australia. Circular failure is the typical slope failure mechanism in slopes with low–strength rocks, although direct/flexural toppling of jointed columns can also occur. The study reviews circular–toppling failure mechanisms in the context of the local geotechnical and geo–hydrological conditions, which include the interaction between fault contacts and the existing deformed rocks. General limit equilibrium methods are used to evaluate the sensitivity of slope models to rock strength parameters and the trigger mechanisms. Finite element methods are used to assess the failure mechanisms and slope displacement, and a kinematic approach is used to evaluate structurally controlled slope instability mechanisms. The results demonstrate that the most credible failure mechanism was shearing along a circular path through the upper weaker rocks (leached Magazine Shale) that in turn initiated secondary block toppling, and the progressive nature of the slope failure mechanism. The use of conventional and numerical techniques for back–analysis of the combined circular–toppling failure provided key insights into the failure mechanisms and factors controlling slope instability. © 2019, Springer Nature Switzerland AG.
Modelling and analyses of rock bridge fracture and step-path failure in open-pit mine rock slope
- Authors: Al Mandalawi, Maged , You, Greg , Dahlhaus, Peter , Dowling, Kim , Sabry, Mays
- Date: 2019
- Type: Text , Conference paper
- Relation: 2nd GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2018 - The official international congress of the Soil-Structure Interaction Group in Egypt, SSIGE 2018, 24-28 November 2018 p. 198-226
- Full Text: false
- Reviewed:
- Description: Rock Bridge fracturing and coalescence with pre-existing discontinuities in rock mass due to the initiation, propagation and interaction of these fractures refers to instability mode of step-path failure. Step-path failure is a typical type of instable mode of man-made and natural rock slopes. The continuum finite element method was applied to work on deeper insight into the propagation of tensile cracks which developing in the intact rock bridges that can finally coalesce to form step-path failure. In this paper, based on the intact rock fracturing hypothesis, two selected slope simulations from the Handlebar Hill open - pit mine near Mt. Isa in Queensland, Australia, modeled the process of fracturing and step-path failure through different pre-existing discontinuities. The empirical models of Bobet and Einstein (1998) and the progressively cracks development are observed within crack initiation, propagation and coalescence in the intact rock bridges. Proposed slope models of the mine included four joint-net distributions through the rock masses considering the geometry of structures (dip angles, spacing, lengths and orientation) illustrated the extension cracks from the flaw tips and propagated to the slope surface. Modes of intact rock bridges fracturing (shear, tensile and a combination of shear and tensile) have been observed. Tensile fracture is usually generated when the rock bridge angle is sub-vertical. Shear fracture can be initiated in less steep rock bridge angles. A combination of shear and tensile failure is normally generated in slopes with. Slope with explicit large-scale structures of steeper dip angles increased the yielding. Larger structures show much higher potential for yielding as the tensile stresses increasing. Major joint plane spacing resulted in less potential for relative deformations between neighboring structures and consequently reduced slope instability. The changes of length and spacing have more influence on slope stability than a change in the dip angle of the structures. © 2019, Springer Nature Switzerland AG.