Rock strength analysis software

The mohrcoulomb strength criterion is the most frequently used failure criterion in practical engineering and analysis software. Figure 145 illustrates typical strength parameters for five geological conditions that range from a low strength infilled fracture to relatively high strength fractured rock containing discontinuous. For this the software roclab was used see figure 8. The software also features a number of modules for topics taught in the statics course. In general, rock mass strength depends on the strength of intact rock and the strength of rock discontinuities. Estimating hoekbrown rock mass strength parameters from rock. The rock unit is the basic mapping unit for the rock material field classification rmfc system.

Rocdata now includes rocprop, a database of intact rock properties which runs as a standalone application. Rocdata is an interactive toolkit for the analysis of rock and soil strength data. Rocdata rock, soil and discontinuity strength analysis software. The load carrying capacity of even low strength rock in most situations is far in excess of the strength of the structure for example, a building column transmitting the load. Rocdata utilizes four of the most widely used strength models in geotechnical engineering generalized hoekbrown, mohrcoulomb, bartonbandis, and power curve. This helps in understanding the core areas of the business where it beats the competition and has the competitive advantage in the. A rock strength analysis program, through intensive log analysis, can quantify rock hardness in terms of confined compressive strength to identify intervals suited for drilling with polycrystalline diamond compact pdc bits. Span rock stressedrock perforating analysis incorporates hundreds of shaped charge test shots made into a broad range of stressed rocks to accurately predict perforator performance downhole. A time motion analysis of bouldering style competitive rock climbing. Using log data from offset wells, a bitselection software based on unconfined compressive strength ucmps calculations has been used to optimize the bit selection for well x.

Rock strength logs are used to conduct different types of analysis such as preventing wellbore failure, deciding on completion design methods and controlling sand production. Following are common laboratory tests for determining strength of rocks. Roctopple makes it easy to visualize the slope failure in both 2d and 3d. Pdf strength classification of rock material based on. It is more commonly used test for rocks to determine its strength but it should be done carefully for accurate results. Rocdata can be used to determine the parameters of linear and nonlinear strength envelopes for rock and soil, based on the analysis of triaxial or direct shear strength data. Chapter 7slope stability analysis geotechnical design manual page 6 of 17. Rocdata includes rocprop, a database of intact rock properties that runs as a standalone application. Apr 10, 2019 this is the swot analysis of hard rock cafe.

Using the shear stress equation 5, the factored strength parameters must. Using the log data from offset wells, a bit selection software based on unconfined. The wellbore geometry used for this rock strength analysis. Rock parameters on fragmentation process include density, propagation velocity, characteristics impedance, energy absorption, compressive and tensile strength, variability and structure of the rock. Rocdata is a versatile toolkit which can be used in a variety of ways for the analysis of rock and soil strength data, and the determination of. The compressive strength of rock is a function of the confining pressure. To understand the log data patterns in a discontinuous sandstone reservoir, newfield exploration engaged feis digital rock experts to conduct a porescale wettability study with a goal to optimize primary oil production as well as to increase secondary recovery from. Redi rock wall freeware is a robust software tool for geotechnical engineers to design and analyze cross sections of redi rock gravity walls. Mechanical loading, thermal stress, bolt tension, pressure conditions and rotational acceleration are just some of the factors that will dictate strength requirements for materials and designs. Software by geostru software software for the determination of the failure criterion of a rock mass according to the model of hoekbrown 2002. Calculating unconfined rock strength from drilling data.

Developed by the makers of geo5, the easytouse free software. Lecture 9 introduction to rock strength david hart. If the strength was estimated to be on the boundary between two classes the boundary value is used. Core laboratories measures the mechanical properties of a rock, such as youngs modulus, poissons ratio, compressive strength, tensile strength and compressibility. Figure 145 illustrates typical strength parameters for five geological.

Criteria are presented for strength tests, analysis conditions, and factors of safety. The compressive strength of rock is a function of the confining. Estimating hoekbrown rock mass strength parameters from. A time motion analysis of bouldering style competitive. Rocdata is a versatile toolkit for the analysis of rock and soil strength data, and the determination of strength envelopes and other physical parameters. Hoekbrown rock mass strength parameters m, s, and oc are suggested. Mdsolids consists of routines for beams and flexural members, torsional assemblies, axial assemblies, trusses, columns, pressure vessels, section properties, mohrs circle analysis including stress transformations and strain transformations, and many more. Rocdata rock, soil and discontinuity strength analysis rocscience. Isrm recommends a correlation between ucs and the rebound value based on the formula ucs aebr where r is the rebound value. Jpt rockstrength analysis and integrated fea modeling optimize. Developed by the makers of geo5, the easytouse free software ensures all the details of your project are accounted for while the robust input options allow for extremely precise geotechnical modeling.

Efficiently model, analyze, and report on any geoengineering project with bentley s comprehensive geotechnical engineering software. A potential rockfall can be composed of either rock blocks cut by discontinuities and free faces or boulders and rock fragments on a soil or talus slope surface. Roclab adalah sebuah program perangkat lunak untuk menentukan parameter kekuatan massa batuan, berdasarkan pada versi. Stability analysis of a rock slope requires assessment of shear strength parameters, that is, cohesion c and angle of internal friction.

Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the. Using the log data from offset wells, a bit selection software based on unconfined compressive strength ucmps calculation was used to optimize the bits for all section of well x. It is defined as a body of rock that is identified in the field and mapped according to measurable or otherwise. Rocdata now includes rocprop, a database of intact rock properties that runs as a standalone application. Knowledge of roc k mass strength is also important in the design of support systems as discussed in the next set of notes with regard to the concept of rocksupport interaction.

Then, using appropriate software for slope stability analysis limit equilibrium method software. To incorporate the results of practical applications of the failure criterion under real engineering conditions, hoek and brown. Roctopple is an interactive software tool for performing toppling analysis and support design of rock slopes. Chapter 4 engineering classification of rock materials. Msc software provides a family of high performance solutions for fea that meet the needs of experienced experts and designers, new engineers, and everyone in between. Thus siliciclastic rock strength is potentially predictable from routine characterization of core or cuttings or remote sensing associated with geophysical wireline logs and seismic inversion. Estimates of these parameters are usually not based on extensive field tests. Additionally, knowing the confined compressive strength helps determine. Backanalysis of observed failures can provide representative values for large scale rock mass strength, but obviously, this is only possible for cases in which rock mass failure has occurred. Rock strength analysis and integrated fea modelling optimise bit.

To incorporate the results of practical applications of the failure criterion under real engineering conditions, hoek and brown proposed equations to estimate rock mass strength pa rameters from classifications. A time motion analysis of bouldering style competitive rock. The cafe is one of the most popular restaurants in the industry which offers food, souvenirs, ambiance, and clubbing to all age groups of the society. The wellbore geometry used for this rock strength analysis was identified from the directional survey measurements of this horizontal well and is depicted in figure 3.

Rocdata solutions for rock and soil engineering rock. Laboratory testing and interpretation of rock properties. Estimates of these parameters are usually not based. Complete geomechanical property log from drilling data in. You can easily design and analyze soil and rock deformation and. Visit this page for additional free programs and software. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. Mdsolids consists of routines for beams and flexural members, torsional assemblies, axial assemblies, trusses. The peak strength of the rockmass from simulations can be transformed into. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Unsatisfactory performance of a pile in rock is usually a displacement issue and is a function of rock mass stiffness rather than rock mass strength. It is defined as a body of rock that is identified in the field and mapped according to measurable or otherwise describable physical properties or features at a scale useful for project analysis. Complete slope stability analysis program by geosoft.

All these parameters are directly related to the drilling wellbore stability, drilling mud density determination, production sand control, stimulation hydraulic fracture and. Rocdata is a robust software for rocks that comes with a complete toolkit for the analysis of rock and soil strength data and more. Rock strength analysis and integrated fea modelling optimise. Numerical analysis of the anisotropy and scale effects on the. The simplest test to perform is the unconfined compression tests that will yield the unconfined compressive strengths. The more general problem of forward strength prediction for large scale rock masses remains as one of the great challenges in rock mechanics. Stability analysis techniques specific to rock slopes, are described in chapter 12.

One of the major features of rocdata is the ability to input strength test data from triaxial or direct shear tests to determine the best fit strength envelope and the associated strength parameters e. Design and analyze planar rock slopes with rocplane, a quick and easy tool to help you build planar models and visualize them in 2d and 3d. Various regression analysis was carried out using experimental data. The geological factors that directly influence a rockfall hazard are the characteristics of the rock mass discontinuities and the rock strength. One source of data which is often overlooked in calculating rock strength is drilling data.

The aim of this study was to quantify the movement dynamics of elite boulder climbers. Rock strength analysis and integrated fea modelling. During a stability analysis, the strength value obtained from the rock sample is used when it is representative of the whole rock mass. Estimating the intact rock strength of a rock mass by. Msc software continues its 50 year long history by consistently developing bestinclass structural analysis tools for all types of engineering applications structural analysis these solutions help companies meet their business challenges by helping engineers gain deeper insight in their products through virtual testing. Knowledge of roc k mass strength is also important in the design of support systems as discussed in the next set of notes with regard to the concept of rocksupport. Download scientific diagram analysis of rock strength using roclab.

In this topic, well present you some of the laboratory tests that can be performed to infer rock materials strength. A rock strength analysis rsa software now becomes a mandatory requirement for the prejob planning to select a bit. The tortuosity of the rock skeleton is highly correlated with the mechanical parameters of the rock, i. A rock unit is consistent in its mineralogical composi. One of the major features of rocdata is the ability to input strength test data from triaxial or direct shear tests to determine the best fit strength envelope and the associated strength. Slope stability best slope stability analysis software. Download geotechnical engineering software rocdata 5. Rocdata utilizes four of the most widely used strength models in geotechnical engineering. Mehrotra 1992 carried out extensive block shear tests to study the shear strength parameters of rock.

A rock strength analysis program, through intensive log analysis, can quantify rock hardness in terms of confined compressive strength to identify intervals suited for drilling with polycrystalline diamond. Numerical analysis of the anisotropy and scale effects on. In 20, we acquired vsg visualization sciences group, the leading provider of 3d software applications and components for the oil and gas industry. Rocdata rock, soil and discontinuity strength analysis. Influence of rock strength on the propagation of slotted. Determination of shear strength parameters of rock mass. As the confining pressure increases so does the strength. Digital rock provides predictive insight to oil recovery.

Input parameters of rocdata include uniaxial compressive strength of intact rock. Confined compressive strength analysis can improve pdc bit. Tutorial install roclab analysis of rock strength youtube. Swot analysis of hard rock cafe hard rock cafe swot analysis. The explicit dynamic analysis software lsdyna has been used to simulate the slotted cartridge blasting in the mudstone, sandstone, and granite with different strengths in order to reveal the effect of rock strength on the propagation length and velocity of the primary crack and the stress distribution characteristics in rock. Redirock wall freeware is a robust software tool for geotechnical engineers to design and analyze cross sections of redirock gravity walls. Jpt rockstrength analysis and integrated fea modeling. Online rock mass strength by roozbeh geraili mikola, phd, pe, based on generalized hoekbrown criterion. The rocdata software rocscience 2011 is used to estimate the rock. Output of rocdata software download scientific diagram. Noiuish rock strength properties amd their measurement. The explicit dynamic analysis software lsdyna has been used to simulate the slotted cartridge blasting in the mudstone, sandstone, and granite with different strengths in order to reveal the effect of rock. The strength of components is a key requirement in understanding a products performance, lifecycle and possible failure modes.

Evaluation of the nonlinear shear strength strength vs. Rock slope engineering civil engineering i am menglim. Back analysis of observed failures can provide representative values for large scale rock mass strength, but obviously, this is only possible for cases in which rock mass failure has occurred. Rocdata is a versatile toolkit for the analysis of rock and soil strength data, and the determination of strength envelopes and other. Featured document using wettability to understand log response. Estimating the intact rock strength of a rock mass by simple. Shear strength parameter an overview sciencedirect topics. Mar 15, 2017 roclab adalah sebuah program perangkat lunak untuk menentukan parameter kekuatan massa batuan, berdasarkan pada versi terbaru dari kriteria failure hoekbrown umum. The stability condition of slopes is a subject of study and research in soil mechanics. You can easily design and analyze soil and rock deformation and stability, soil structure interaction and groundwater, as well as heat flow with 2d and 3d geotechnical applications based on the finite element method.

The estimated strength values in the graphs in this chapter are plotted as the mid values of the ranges of table 1. It may fail catastrophically if the load frame is soft. It is important for you to know what type of tests can be done and what types of information we can gather from them. Analysis and design of axially loaded piles in rock. Svslope slope stability analysis software by soilvision systems ltd. Span rock stressedrock perforating analysis schlumberger. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. The software also calculates the strength parameters of the rock mass, allows for the calculation of the bearing capacity of foundations. Rocdata your toolkit for analyzing rock and soil strength. Efficiently model, analyze, and report on any geoengineering project with bentleys comprehensive geotechnical engineering software. Chapter 7slope stability analysis geotechnical design manual page 5 of 17 table 7. Pdf stability analysis of rock slopes using the finite element. The peak strength of the rockmass from simulations can be transformed into the equivalent mohrcoulomb strength parameters.