The trapdoor problem is a useful model to understand the stress distribution around geo-structures. This paper focuses on evaluating the conditions of maximum arching (minimum loads on trapdoors) developing during the ...
Van Dyk, C.; Jacobsz, S.W. (Schalk Willem)(Springer, 2016-10)
Sinkholes can occur on land underlain by dolomite and cause substantial damage to buildings and even loss of
life. More than four million people work or reside on dolomite land in South Africa and it is therefore important
Jacobsz, S.W. (Schalk Willem)(South African Institution of Civil Engineering, 2013-04)
This paper describes a physical model of a soil nail retained excavation face which was tested in the new geotechnical centrifuge at the University of Pretoria. As centrifuge modelling is new in South Africa, a short ...
Vorster, P.; Grabe, P.J. (Hannes); Jacobsz, S.W. (Schalk Willem)(Southern African Institute for Industrial Engineering, 2017-09)
With past embankment failures on the heavy haul coal export railway line between Ermelo and
Richards Bay in South Africa, a study was conducted focusing on the modelling of embankments
in a geotechnical centrifuge. This ...
The discrete element method, implemented in a modular GPU based framework that supports polyhedral shaped particles (Blaze-DEM), was used to investigate effects of particle shape on backfill response behind integral bridge ...
Van Eeden, S.J.; Jacobsz, S.W. (Schalk Willem); Rust, M.; Rust, Eben(South African Institution of Civil Engineering, 2016-03)
Dormant tailings storage facilities (TSFs) have negative effects on their surrounding
environments and communities. This study is aimed at determining the financial and practical
feasibility of generating energy from the ...
Cumming-Potvin, D.; Wesseloo, J.; Jacobsz, S.W. (Schalk Willem); Kearsley, Elsabe P.(Southern African Institute of Mining and Metallurgy, 2016-08)
The Duplancic model of caving is widely accepted in industry and is the
framework within which most monitoring and numerical modelling results
in caving mines are interpreted. As a result, the damage profile ahead of
Jacobsz, S.W. (Schalk Willem)(South African Institution of Civil Engineering, 2011-04)
The Department of Civil
Engineering at the University
of Pretoria has recently been
awarded a grant from the National
Research Foundation (NRF) to
acquire a geotechnical centrifuge.
Geotechnical centrifuges are
The objective of this study was to determine whether the contact stress distribution underneath
a strip footing on dense cohesionless sand can be predicted as a function of the properties of
the footing and that of the ...
Jacobsz, S.W. (Schalk Willem)(The Geological Society of London, 2013-02)
In South Africa, the stiffness of dolomite residuum has traditionally been viewed as relatively low. For reasons of economy, available dolomite residuum stiffness data mostly stem from plate load tests on each of the ...
The optimal placement of geogrid reinforcement in clay liners subject to differential settlement was investigated both numerically and with centrifuge modelling. Two unreinforced liners, a liner reinforced at the top-quarter ...
Jones, Brendon Ronald; Jacobsz, S.W. (Schalk Willem); Van Rooy, J.L. (Jan Louis)(South African Institution of Civil Engineering, 2016-06)
A centrifuge model study was carried out investigating the effects of the inclusion of
geogrid reinforcement in a sand layer constructed over a thin, very soft clay layer to facilitate
the construction of warehouse floors ...
Introducing modern technologies into an existing market can be a
challenge, but most would agree that the recipe for success must
bring together simplicity, technical performance, time savings, high
safety and quality ...