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. Pdf influence of slope shape and surface roughness on. The program uses easily identified parameters to produce a rockfall simulation on. 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. 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. Investigation of surface models and the use of a smart. Room 715 denver, co 80222 3038662611 3038662461 fax. 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. Canadian geotechnical journal canadian science publishing. 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. In this study, simulation of rockfall movement was performed using software that can be downloaded free of charge and easy to use i. It encompasses the field data collection, program input data selection and typical run interpretation.
Colorado rockfall simulation program user s manual timothy j pfeiffer on. Fhwacfltd12007 february 2012central federal lands highway. Rockyfor3d is a simulation model that calculates trajectories of single, individually falling rocks, in three dimensions 3d. This rockfall computer program, which simulates rocks tumbling. Colorado rockfall simulation program crsp the colorado geological survey cgs is now handling distribution of the colorado rockfall simulation program crsp. Colorado rockfall simulation program user s manual. May 08, 2016 focus colorado rockfall simulation program. The use of dynamic computational methods has become indispensable for addressing problems related to rockfall hazard. May 24, 2015 andrew r et al 2012 crsp3d users manual colorado rockfall simulation program. Calibration of restitution coefficients using rockfall. Simulation module user manual labview simulation module user manual november 2005 3710c01. Rockfall mitigation measures university of kentucky.
Download free colorado rockfall simulation program. Although a number of models with various degrees of complexity are available, model parameters are rarely calibrated against observations from rockfall experiments. In accordance with hoek 2000, the slope is one of most important parameters in rockfall simulation. Colorado rockfall simulation program users manual for version 2. Rockfall colorado department of transportation cdot. Comparison of 2d and 3d rockfall modeling for rockfall mitigation design. Comparison of 2d and 3d rockfall modeling for rockfall. Ryan bartingale project geotechnical engineer newfields. Yade 1 is a 3d opensource discrete element code which can be used for rockfall and debris flow analysis. Colorado rockfall simulation program users manual book. 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. 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.
Rocfall assess slopes that are at risk of rockfalls. Central federal lands highway division flh of the federal highway administration fhwa. The colorado rockfall simulation program crsp was developed to model. Sd mozete prviti grfike jcine struje i npon u funkciji vremen. 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. Simulation module user manual national instruments. Colorado rockfall simulation program crsp 3d yeh and associates, inc.
Cdot has two separate programs that work hand in hand to support projects with their geological challenges. Colorado rockfall simulation program colorado department of transportation crsp. Distributions of energy, velocity and bounce height are also calculated along the slope profile. Colorado rockfall simulation program how is colorado rock. Application of a longrange terrestrial laser scanner to a.
Crsp colorado rockfall simulation program acronymattic. Drillysis borehole logging project database geosysta. Federal highway administration, central federal lands highway division, lakewood, co. Analyzes rock slope designs and capture zones to prevent rocks from entering highways. Department of transportation colorado geological survey colorado school of mines colorado transportation institute. 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. Andrew r et al 2012 crsp3d users manual colorado rockfall simulation program.
This study used rocfall and the colorado rockfall simulation program. 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. Download free colorado rockfall simulation program guysbackup. Georock 2d is a software for the rock falls 2d simulation using lumped mass and c. Mi66 colorado rockfall simulation program, version 4. Circuit 1 properties of electric circuits inquiry based series and parallel circuits basics. Influence of slope shape and surface roughness on the moving. Crsp3d users manualcolorado rockfall simulation programpublication no.
Andrew r, hume h, bartingale r, rock a, zhang r 2012. It is a general purpose program so dont expect functionsgui specific to this topic. The main difference between these models is the way in which. The program uses easily identified parameters to produce a rockfall simulation on pccompatible computers and has proven. Analysis of rockfall stopdistance factors with crsp3d in. 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. Simulation of rockfall trajectories with consideration of.
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. Rocfall is a 2d statistical analysis program designed to assist with assessment of slopes at risk for rockfalls. Colorado rockfall simulation program how is colorado. The reliability of the model was verified by comparisons between. A total of 18 different scenarios were developed, with 100 rocks being rolled in each run, for a total of 1,800 rocks. The software is accompanied by the crsp3d users manual pub. Geotechnical engineer for oregon department of transportation research group. Circuit construction kit series of three activitites inquiry based using phet in electricity unit.
Cdohdtded3\csm892, but data inputs and graphic outputs have been revised by rick schultz of cdot to create a more user friendly environment. And from this list, it is the only one that is free. Also, for rock falls it would be good to have a software that makes 3d simulations, using dems, like rockyfor3d. 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. Colorado rockfall simulation program electronic resource. Twodimensional 2d rockfall modeling programs such as the colorado rockfall simulation program crsp version 4. Georock 2d is a software made by geostru for the 2d simulation of rockfalls using lumped mass and c. 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. In the early studies of rockfall simulation, the slope was represented using a bidimensional profile piteau and associated limited, 1980.
The colorado rockfall simulation program crsp was devel oped to provide a. Colorado rockfall simulation program how is colorado rockfall simulation program abbreviated. The colorado geological survey cgs is now handling distribution of the colorado rockfall simulation program crsp. Which are the best openfree softwares for debris flow and. 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. Working together, the two programs provide a full range of geotechnical services that include not only geotechnical explorations and recommendations, but also design and. Colorado rockfall simulation program listed as crsp. Fhwas new crsp3d software offers a more effective solution for evaluating rockfall hazards. Energy, velocity and bounce height envelopes for the entire slope are determined by the program, as is the location of rock endpoints. This colorado rockfall simulation program revision version 2. Results of modelling and simulation using the crsp 3d show that potential rockfall at between 73,124 meters and 86,565.
A failure would result in a falling rock estimated to be about 15 across. Results obtained from this program seem reasonable. Crsp3d users manual, colorado rockfall simulation program. The software is interfaced with other geostru programs. This manual provides guidance and suggestions on rock slope design with the aid of colorado rockfall simulation program crsp. A manual calculation was made to verify the real horizontal distance where the rock. Twodimensional model of rockfall based on slope geometry and rock properties. 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. Computer models have become standard in assessing the hazards posed by rock falls, and there are a wide variety of models currently available. Colorado rockfall simulation program users manual timothy j pfeiffer on. Crsp3d users manual colorado rockfall simulation program. The model takes into account slope profile, rebound and friction characteristics of the slope and rotational energy of the rocks. Ovo je nov verzij strujnog kol s kondenztorim, zvojnicm i izvorom nizmjenicnog npon.
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. This method has been used by pfeiffer and higgins 1990 to predict the rockfall hazard in gleenwood canyon. The model combines physicallybased, deterministic algorithms with stochastic approaches, which makes rockyfor3d a socalled probabilistic processbased rockfall trajectory model. The rockfall simulation technique is based on the nonsmooth contact dynamics method with hard contact laws. But for rock falls, it seems the colorado rockfall simulation program is not supported anymore. Since rockfall is the fastest type of landslide varnes, 1984, it presents a common risk to transportation and structures in steep mountainous terrain pfeiffer et al. 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. 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. Rockfall catchment area design guide final report spr3032 by lawrence a. This rockfall computer program, which simulates rocks tumbling down a slope.
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. Pfeiffer, et al based on research at the colorado school of mines. Technical report, fhwacfltd12007 arikan f, ulusay r, aydin n 2007 characterization of weathered acidic volcanic rocks and a weathering classification based on a. Project title a rational procedure for rock slope design for. 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. 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. Also included in the users manual is a 2d simulation of rockfall using manually entered slope geometry data. Pdf the prediction of rockfall runout using crsp 3d. 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. Investigation of surface models and the use of a smart rock. However, at present there are numerous rockfall studies where the topography is described in a 3d mode. In this study, several rockfall case studies were examined using this computer program. Rocfall allow users to define slope geometry, rock properties and barriers. Members of the national instruments alliance partner program are business entities independent from national instruments and have no.
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