This study used rocfall and the colorado rockfall simulation program. Rockfall catchment area design guide final report spr3032 by lawrence a. May 08, 2016 focus colorado rockfall simulation program. Rocfall allow users to define slope geometry, rock properties and barriers. Also included in the users manual is a 2d simulation of rockfall using manually entered slope geometry data. Andrew r, hume h, bartingale r, rock a, zhang r 2012. The program outputs proved to be consistent with the results of other rockfall simulation programs, to be reliable for modelling rockfall in threedimensional geomorphological settings, and to help in the quantitative assessment of rockfall hazard over large areas. Colorado rockfall simulation program user s manual timothy j pfeiffer on. The main difference between these models is the way in which. Georock 2d is a software for the rock falls 2d simulation using lumped mass and c. The model takes into account slope profile, rebound and friction characteristics of the slope and rotational energy of the rocks. Results of modelling and simulation using the crsp 3d show that potential rockfall at between 73,124 meters and 86,565. Analyzes rock slope designs and capture zones to prevent rocks from entering highways. Pfeiffer, et al based on research at the colorado school of mines.
Cdot has two separate programs that work hand in hand to support projects with their geological challenges. Lidar is a 3d mapping technology that uses a laser to rapidly scan and produce highresolution images of areas such as rock slopes and outcrops. Comparison of 2d and 3d rockfall modeling for rockfall. However, at present there are numerous rockfall studies where the topography is described in a 3d mode. Members of the national instruments alliance partner program are business entities independent from national instruments and have no. Pdf the prediction of rockfall runout using crsp 3d. This colorado rockfall simulation program revision version 2. Technical report, fhwacfltd12007 arikan f, ulusay r, aydin n 2007 characterization of weathered acidic volcanic rocks and a weathering classification based on a rating system. The model combines physicallybased, deterministic algorithms with stochastic approaches, which makes rockyfor3d a socalled probabilistic processbased rockfall trajectory model.
Rock falls are a common hazard affecting people and infrastructure below natural cliffs and in manmade environments such as roads, railways, quarries and open pit mines. The program uses easily identified parameters to produce a rockfall simulation on. The reliability of the model was verified by comparisons between. The crsp model colorado rockfall simulation program has been developed by pfeiffer and bowen 1989 with the purpose of modeling the falling motion of boulders having the shape of spheres, cylinders or discs, with circular cross section in the vertical plane of the movement. Computer models have become standard in assessing the hazards posed by rock falls, and there are a wide variety of models currently available. The rockfall simulation technique is based on the nonsmooth contact dynamics method with hard contact laws. This rockfall computer program, which simulates rocks tumbling down a slope. The colorado rockfall simulation program crsp was devel oped to provide a. The colorado geological survey cgs is now handling distribution of the colorado rockfall simulation program crsp. The program uses easily identified parameters to produce a rockfall simulation on pccompatible computers and has proven. Georock 2d is a software made by geostru for the 2d simulation of rockfalls using lumped mass and c. Colorado rockfall simulation program users manual timothy j pfeiffer on.
Rocfall assess slopes that are at risk of rockfalls. Rockyfor3d is a simulation model that calculates trajectories of single, individually falling rocks, in three dimensions 3d. Crsp3d users manualcolorado rockfall simulation programpublication no. Colorado rockfall simulation program crsp the colorado geological survey cgs is now handling distribution of the colorado rockfall simulation program crsp. In accordance with hoek 2000, the slope is one of most important parameters in rockfall simulation. And from this list, it is the only one that is free. A manual calculation was made to verify the real horizontal distance where the rock.
Cdohdtded3\csm892, but data inputs and graphic outputs have been revised by rick schultz of cdot to create a more user friendly environment. Project title a rational procedure for rock slope design for. Colorado rockfall simulation program crsp 3d yeh and associates, inc. The colorado rockfall simulation program crsp was developed to provide a statistical analysis of probable rockfall behavior at any given site and to be used as a tool to study the behavior of rockfalls, to determine the need for rockfall mitigation, and to aid in the design of rockfall. The colorado rockfall simulation program crsp was developed to model. Central federal lands highway division flh of the federal highway administration fhwa. Jan 28, 2015 the colorado rockfall simulation program crsp was developed to model rockfall behavior and provide a statistical analysis of probable rockfall events at any given site. This method has been used by pfeiffer and higgins 1990 to predict the rockfall hazard in gleenwood canyon. Ovo je nov verzij strujnog kol s kondenztorim, zvojnicm i izvorom nizmjenicnog npon. Room 715 denver, co 80222 3038662611 3038662461 fax. Fhwas new crsp3d software offers a more effective solution for evaluating rockfall hazards. Colorado rockfall simulation program users manual book. Ryan bartingale project geotechnical engineer newfields. Colorado rockfall simulation program listed as crsp.
A failure would result in a falling rock estimated to be about 15 across. Distributions of energy, velocity and bounce height are also calculated along the slope profile. Colorado rockfall simulation program how is colorado rockfall simulation program abbreviated. Department of transportation colorado geological survey colorado school of mines colorado transportation institute. Federal highway administration, central federal lands highway division, lakewood, co. Although a number of models with various degrees of complexity are available, model parameters are rarely calibrated against observations from rockfall experiments. The software is accompanied by the crsp3d users manual pub. Results obtained from this program seem reasonable. But for rock falls, it seems the colorado rockfall simulation program is not supported anymore. Rocfall is a 2d statistical analysis program designed to assist with assessment of slopes at risk for rockfalls. Geotechnical engineer for oregon department of transportation research group. Calibration of restitution coefficients using rockfall. This paper applies colorado rockfall simulation program crsp as our study tool to discuss the impact of slope shape and surface roughness on the moving paths of a single rockfall.
Download free colorado rockfall simulation program. Download free colorado rockfall simulation program guysbackup. Andrew r et al 2012 crsp3d users manual colorado rockfall simulation program. Analysis of rockfall stopdistance factors with crsp3d in. Energy, velocity and bounce height envelopes for the entire slope are determined by the program, as is the location of rock endpoints. Pdf influence of slope shape and surface roughness on. The aim of the paper is to develop a fully 3d simulation technique for rockfall dynamics taking rock shape into account and using the stateoftheart methods of multibody dynamics and nonsmooth contact dynamics. Colorado rockfall simulation program colorado department of transportation crsp. Rockfall colorado department of transportation cdot. Trispace for the automatic generation of sections from an xyz plane or from raster images and also with geostru maps, the new online app from geostru, that allows you to create. The colorado rockfall simulation program crsp was developed to provide a statistical analysis of probable rockfall behavior at any given site and to be used. Twodimensional 2d rockfall modeling programs such as the colorado rockfall simulation program crsp version 4. The use of dynamic computational methods has become indispensable for addressing problems related to rockfall hazard. In the early studies of rockfall simulation, the slope was represented using a bidimensional profile piteau and associated limited, 1980.
Colorado rockfall simulation program crsp, available from the colorado geological survey, and rocfall from rocscience use the newtonian laws of motion and acceleration due to gravity to predict the motion and related velocities and energies of falling rock. Also, for rock falls it would be good to have a software that makes 3d simulations, using dems, like rockyfor3d. Circuit construction kit series of three activitites inquiry based using phet in electricity unit. Colorado rockfall simulation program electronic resource. Crsp3d users manual, colorado rockfall simulation program. Sd mozete prviti grfike jcine struje i npon u funkciji vremen. Investigation of surface models and the use of a smart. Fhwacfltd12007 february 2012central federal lands highway.
Crsp colorado rockfall simulation program acronymattic. Technical report, fhwacfltd12007 arikan f, ulusay r, aydin n 2007 characterization of weathered acidic volcanic rocks and a weathering classification based on a. Influence of slope shape and surface roughness on the moving. Simulation module user manual labview simulation module user manual november 2005 3710c01. Colorado rockfall simulation program how is colorado. This rockfall computer program, which simulates rocks tumbling. Colorado rockfall simulation program user s manual. The colorado rockfall simulation program crsp was developed in 1987 to estimate the velocity, energy, and bounce heights of rockfall, which in turn forms a basis. A total of 18 different scenarios were developed, with 100 rocks being rolled in each run, for a total of 1,800 rocks. Canadian geotechnical journal canadian science publishing.
This rockfall computer program, which simulates rocks tumbling down a slope, predicts the statistical distribution of speed and bounce height, and can be used for locating and designing rockfall. Application of a longrange terrestrial laser scanner to a. Which are the best openfree softwares for debris flow and. This rockfall computer program, which simulates rocks tumbling down a slope, predicts the statistical distribution of speed and bounce height and can be used for locating and designing rockfall mitigation. Participated in research and development of the new version of the colorado rockfall simulation program crsp, version 3d coauthored users manual show more show less. Drillysis borehole logging project database geosysta. Simulation module user manual national instruments. Colorado rockfall simulation program how is colorado rock. The colorado rockfall simulation program crsp was developed to provide a statistical analysis of probable rockfall behavior at any given site and to be used as a tool to study the behavior of rockfalls, to determine the need for rockfall mitigation, and to aid in the design of rockfall mitigation. May 24, 2015 andrew r et al 2012 crsp3d users manual colorado rockfall simulation program. Twodimensional model of rockfall based on slope geometry and rock properties.
Colorado rockfall simulation program users manual for version 2. This manual provides guidance and suggestions on rock slope design with the aid of colorado rockfall simulation program crsp. The colorado rockfall simulation program crsp was developed to aid in the design of rockfall mitigation by sup plying data on probable rockfall bounce height and velocities. Crsp3d users manual colorado rockfall simulation program. Mi66 colorado rockfall simulation program, version 4. It encompasses the field data collection, program input data selection and typical run interpretation. Rockfall is the relative free falling or precipitous movement of a newly detached segment of bedrock from a cliff or other very steep slope bates and jackson, 1987.
In this study, several rockfall case studies were examined using this computer program. In this study, simulation of rockfall movement was performed using software that can be downloaded free of charge and easy to use i. Yade 1 is a 3d opensource discrete element code which can be used for rockfall and debris flow analysis. Investigation of surface models and the use of a smart rock. 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. It is a cloud based borehole logging database which can be accessed from any device pc, laptop, tablet or smartphone from anywhere with just an internet connection no complicated network licenses or hardlock keys. Working together, the two programs provide a full range of geotechnical services that include not only geotechnical explorations and recommendations, but also design and. The rockfall computer simulation program devised by colorado engineers is a very powerful analytical tool for assessing the stability and safety of existing rock slopes and newly designed rock slopes. Circuit 1 properties of electric circuits inquiry based series and parallel circuits basics. Simulation of rockfall trajectories with consideration of.
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