![]() ![]() Modeling has helped engineers estimate how rockfall parameters such as bounce height, velocity, kinetic energy, and rollout distance change along the slope length. Created in the mid 1980s for the Colorado Department of Transportation, the original CRSP program was a 2D model used to predict the behavior of rockfall determine the need for rockfall mitigation measures such as constructing ditches, berms, fences, and walls and aid in the design of these measures. FHWA's new CRSP-3D software offers a more effective solution for evaluating rockfall hazards.Įvaluate rockfall hazards surrounding roadways more effectively with the new 3D version of the Federal Highway Administration's (FHWA) Colorado Rockfall Simulation Program (CRSP-3D).Īs development and traffic have increased in mountainous areas, the need to protect people, roadways, and building structures from falling rocks has become more important. The highly weathered limestone escarpment above the Glenwood Canyon Viaduct in Colorado produces rockfall over an area too large to be assessed by conventional 2D methods. Copyright © National Academy of Sciences.Printable Version (.pdf, 0.3 mb) Colorado Rockfall Simulation Program: Modeling Rockfall in 3D Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. 1343, Rockfall Prediction and Control and Landslide Case Histories. This paper appears in Transportation Research Record No.Find a library where document is available. ![]() (ABRIDGMENT)&author=R.+Andrew&publication_year=1992 Three devices (tire attenuator, Flexpost fence, and geosynthetic-reinforced impact wall) have undergone extensive testing and have been applied to several locations along this scenic highway with an impressive record of performance. This, in turn, has led to the development of some fairly innovative mitigation techniques. Since its first release in late 1987, the program has been used to analyze a number of hazardous rockfall areas along the Interstate 70 project through Glenwood Canyon in Colorado. The inability to characterize a rock in motion led engineering geologists with the Colorado Department of Transportation and the Colorado Geological Survey to develop, test, and adopt the Colorado Rockfall Simulation Program (CRSP). Many of the existing rockfall models had proven to be inaccurate and unrealistic in characterizing real-life rockfall occurrences with variable slope conditions. ![]() Until recently, predicting rockfall behavior has, at best, been extremely subjective. ![]()
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