Modification and statistical analysis of the Colorado Rockfall Hazard Rating System

Santi, Paul M.; Russell, Christopher P.; Higgins, Jerry D.; Spriet, Jessica I.

doi:10.1016/j.enggeo.2008.08.009

Cited by 59 publications

(49 citation statements)

References 5 publications

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“…However, when many provisional diagnoses of slope stability are needed, single case studies can be costly and time consuming. In order to overcome these limitations, simple and easy-to-use methods such as Slope Mass Rating (SMR) [87] and the Rockfall Hazard Rating System (RHRS) [37][38][39] have been developed for evaluation of slope stability. However, a clear evaluation method related to slope revegetation has not yet been developed.…”

Section: Discussionmentioning

confidence: 99%

“…Soil depth, Land use, Drainage system, Elapsed year, Scale of failure, Collapse history, Reinforced facility for slope protection [39,45,46,57,62] The second step was to establish the key variables for slope stability by hydroseeding-based revegetation. The number of the key variables related to stabilizing slopes using the hydroseeding method was reduced to 25 of the total 65 variables.…”

Section: Constructionmentioning

confidence: 99%

“…Furthermore, various analyses such as correlation analysis and numerical analysis, conducted through measurements of each variable in on-the-spot surveys, will be helpful to understand the stability of slope revegetation and to develop a detailed rating system such as that of rockfall hazard [37][38][39].…”

Section: Comparison Of Weighted Values Between Environmental Experts mentioning

confidence: 99%

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Utilizing the Analytic Hierarchy Process to Establish Weighted Values for Evaluating the Stability of Slope Revegetation based on Hydroseeding Applications in South Korea

et al. 2016

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Abstract:The aim of this study was to identify the major variables identified as important for considering the stabilization of slope revegetation based on hydroseeding applications and evaluate weights of each variable using the analytic hierarchy process (AHP) with both environmental experts and civil engineers. Twenty-five variables were selected by the experts' survey from a total of 65 from the existing literature, with each variable considered as an important factor for slope stabilization in South Korea. The final results from the AHP method showed that variables associated with the driving force of water resources showed higher values in all expert groups such as rain intensity, seepage water and drainage condition. Other important variables were related to plant growth such as vegetation community, vegetation coverage and quality of soil ameliorant produced in an artificial factory such as tensile strength, permeability coefficient, soil texture and organic matter. The five highest-ranked variables that satisfied both environmental experts and civil engineers were rain intensity, seepage water, slope angle, drainage condition and ground layer. The findings of this research could be helpful for developing a more accurate rating system to evaluate the stability of slope revegetation.

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Section: Discussionmentioning

confidence: 99%

Section: Constructionmentioning

confidence: 99%

Section: Comparison Of Weighted Values Between Environmental Experts mentioning

confidence: 99%

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Utilizing the Analytic Hierarchy Process to Establish Weighted Values for Evaluating the Stability of Slope Revegetation based on Hydroseeding Applications in South Korea

et al. 2016

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“…Santi et al, 2009), investigations on the longer-term temporal behaviour are rare. Moreiras (2006) emphasized the strong bias of historical records and pointed out the importance of wet phases for rockfall generation.…”

Section: Introductionmentioning

confidence: 99%

Is climate change causing increased rockfall frequency in Austria?

Sass¹,

Oberlechner

2012

Nat. Hazards Earth Syst. Sci.

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Abstract. Potentially, increasing rockfall hazards triggered by climate change are a major concern expressed both in scientific and non-scientific media. An existing rockfall inventory for Austria including 252 events from ca. 1900 to 2010, mainly from non-permafrost areas, was analysed. The correlation of events with temperatures is very weak and no increase of rockfall frequency during warmer periods was observed. The peak of rockfall activity is in spring, whereas in recent decades a secondary summer maximum appeared in the records. A possible reason for this shift is reduced rockfall activity in spring due to warmer winters. We conclude that a premature warning of increasing rockfall hazard, especially below the permafrost limit, is not supported by the existing data.

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“…McMillan and Matheson (1997) have developed the Rock Slope Hazard Index (RSHI) system for highway rock slope inspection in Scotland. Santi et al (2009) have proposed a modification to the Colorado Rockfall Hazard Rating system, developed initially from Andrew (1994) for highway slopes in Colorado. Hungr and Evans (1999) have applied quantitative risk analysis for determination of total risk on highway and railways in British Columbia, which is based on data on the magnitude and frequency distribution of the rockfall hazards.…”

Section: Generalmentioning

confidence: 99%

Rockfall hazard and risk assessment: an example from a high promontory at the historical site of Monemvasia, Greece

Saroglou

Marinos

Μαρίνος

et al. 2012

Nat. Hazards Earth Syst. Sci.

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Abstract. The paper presents the kinematics of rock instability of a high limestone promontory, where the Monemvasia historical site is situated, in Peloponnese in Southern Greece. The instability phenomena poses a significant threat to the town located at the base of the slope. Rockfall episodes occurred in the past due to the relaxation of the high cliff, whereas significant undermining of the castle frontiers has been observed at the slope crest.The predominant types of instability are of planar, wedge and toppling failure of medium to large blocks. In order to investigate the existing stability conditions and decide upon the protection measures, stability and rockfall analyses were carried out for numerous slope sections under different loading conditions and protection measures were suggested.A rock-fall risk rating system is proposed, which is based on morphological and structural criteria of the rock mass and on vulnerability and consequences. The rating system is applied for individual sections along the slope and a risk map was produced, which depicted areas having different degree of risk against rockfall occurrences.

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Modification and statistical analysis of the Colorado Rockfall Hazard Rating System

Cited by 59 publications

References 5 publications

Utilizing the Analytic Hierarchy Process to Establish Weighted Values for Evaluating the Stability of Slope Revegetation based on Hydroseeding Applications in South Korea

Utilizing the Analytic Hierarchy Process to Establish Weighted Values for Evaluating the Stability of Slope Revegetation based on Hydroseeding Applications in South Korea

Is climate change causing increased rockfall frequency in Austria?

Rockfall hazard and risk assessment: an example from a high promontory at the historical site of Monemvasia, Greece

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