dc.contributor.author |
Leyland, R
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|
dc.date.accessioned |
2010-09-29T13:31:48Z |
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dc.date.available |
2010-09-29T13:31:48Z |
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dc.date.issued |
2010-09 |
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dc.identifier.citation |
Leyland, R. 2010. Development of a strategic slope management system for use in South Africa. Geologically Active: 11th IAEG Congress, Auckland, New Zealand, September 5-10, 2010, pp 13 |
en |
dc.identifier.isbn |
978-0-415-60043-7 |
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dc.identifier.uri |
http://hdl.handle.net/10204/4414
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dc.description |
Geologically Active: 11th IAEG Congress, Auckland, New Zealand, September 5-10, 2010, |
en |
dc.description.abstract |
Despite some preliminary developments for Slope Management Systems (SMS) for the South African Road Network, no functional SMS has been implemented. Slopes along important strategic routes are generally not monitored and only maintained on a reactive basis. This application of remedial measures after failures occur often results in disruptions to the flow of traffic. The USA is the leading implementer of Rock Hazard Rating Systems (RHRS) and bases these systems on qualitative methods that follow a heuristic approach. The first state wide RHRS was developed in Oregon and awarded scores to various categories that contribute to rockfalls and the potential impact thereof on traffic. This RHRS has been adopted by 18 different states either unchanged or modified to suit the local conditions. Unstable slopes need to be reassessed every 2 years, or before maintenance budget allocations, to allow for the RHRS inventory to be updated and mitigation plans to be made. There is, however, limited literature available on comprehensive SMS’s that incorporate both rock and soil slopes. Following a comprehensive literature review the modified Colorado Department of Transport RHRS was found to be a suitable starting point for the development of a SMS for South Africa. As the system contains no rating methodology for soil slopes, appropriate rating criteria have been incorporated into the proposed South African system. Other modifications include the removal of variables considered unimportant in South Africa and the variables concerned with the risk to lives of motorists. The proposed method is intended to be applied on an iterative basis with initial basic observations of all slopes along a route and proceeding to different levels of reassessment on specific slopes based on the identification of high risk slopes. The method has been used on major road links of an important strategic nature within South Africa to asses its suitability |
en |
dc.language.iso |
en |
en |
dc.subject |
Slope management |
en |
dc.subject |
Road network |
en |
dc.subject |
Rock hazard rating systems |
en |
dc.subject |
Geology |
en |
dc.title |
Development of a strategic slope management system for use in South Africa |
en |
dc.type |
Conference Presentation |
en |
dc.identifier.apacitation |
Leyland, R. (2010). Development of a strategic slope management system for use in South Africa. http://hdl.handle.net/10204/4414 |
en_ZA |
dc.identifier.chicagocitation |
Leyland, R. "Development of a strategic slope management system for use in South Africa." (2010): http://hdl.handle.net/10204/4414 |
en_ZA |
dc.identifier.vancouvercitation |
Leyland R, Development of a strategic slope management system for use in South Africa; 2010. http://hdl.handle.net/10204/4414 . |
en_ZA |
dc.identifier.ris |
TY - Conference Presentation
AU - Leyland, R
AB - Despite some preliminary developments for Slope Management Systems (SMS) for the South African Road Network, no functional SMS has been implemented. Slopes along important strategic routes are generally not monitored and only maintained on a reactive basis. This application of remedial measures after failures occur often results in disruptions to the flow of traffic. The USA is the leading implementer of Rock Hazard Rating Systems (RHRS) and bases these systems on qualitative methods that follow a heuristic approach. The first state wide RHRS was developed in Oregon and awarded scores to various categories that contribute to rockfalls and the potential impact thereof on traffic. This RHRS has been adopted by 18 different states either unchanged or modified to suit the local conditions. Unstable slopes need to be reassessed every 2 years, or before maintenance budget allocations, to allow for the RHRS inventory to be updated and mitigation plans to be made. There is, however, limited literature available on comprehensive SMS’s that incorporate both rock and soil slopes. Following a comprehensive literature review the modified Colorado Department of Transport RHRS was found to be a suitable starting point for the development of a SMS for South Africa. As the system contains no rating methodology for soil slopes, appropriate rating criteria have been incorporated into the proposed South African system. Other modifications include the removal of variables considered unimportant in South Africa and the variables concerned with the risk to lives of motorists. The proposed method is intended to be applied on an iterative basis with initial basic observations of all slopes along a route and proceeding to different levels of reassessment on specific slopes based on the identification of high risk slopes. The method has been used on major road links of an important strategic nature within South Africa to asses its suitability
DA - 2010-09
DB - ResearchSpace
DP - CSIR
KW - Slope management
KW - Road network
KW - Rock hazard rating systems
KW - Geology
LK - https://researchspace.csir.co.za
PY - 2010
SM - 978-0-415-60043-7
T1 - Development of a strategic slope management system for use in South Africa
TI - Development of a strategic slope management system for use in South Africa
UR - http://hdl.handle.net/10204/4414
ER -
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en_ZA |