A set of 5 basic slope stability problems, together with 5 variants, was distributed in the australian geomechanics profession and overseas as part of a survey sponsored by acads association for computer aided design, in 1988. The finite element program, seepw geoslope international pte ltd, 2004 was used. The piezometer unit is designed for extremely quick and easy field assembly. Slope stability by geo slope software please like and subscribe for an nguyens channel to watch the new videos. A comprehensive instrumentation system, comprising extensometers and inclinometers, was installed at each of 4 locations to monitor any ground movements that may result from changes in water. If the piezometric profile is near or above the ground surface, slope stability may be reduced, or seepage may appear at the surface. Installation of piezometers shall be coordinated with the placement location and schedule for all monitoring instrumentation and wick drains as indicated. Rockpack iii is a package of programs useful for all phases of rock slope analysis and design where stability is controlled by the orientations and characteristics of rock mass discontinuities joints, bedding, foliations, faults, etc. The standpipe piezometer is the most basic type of piezometer. This instrumentation can be monitored by technicians in the field, or remotely by dataloggers and telemetry.
Vibrating wire piezometers are used to monitor porewater pressure in soils. Slide is the most comprehensive slope stability analysis software available, complete with finite element groundwater seepage analysis, rapid drawdown, sensitivity and probabilistic analysis and support design. Dam safety instrumentation plates 4 when and where to use. Due to the angle of the embankments, access to the piezometers and dataloggers was impractical and could have been dangerous and so each piezometer was connected to a single channel vw wisos 480 node so that groundwater monitoring could be done wirelessly. This engineer manual em provides guidance for analyzing the static stability of slopes of earth and rockfill dams, slopes of other types of embankments, excavated slopes, and natural slopes in soil and soft rock. Tagasoft geotechnical software slope stability analysis. Water levels in the piezometer can either be logged manually low. A thermistor is built into the piezometer body to permit temperature measurement and temperature compensation of the piezometer. Gregeo has a full complement of the latest geotechnical engineering software including software for performing slope stability analysis. Monitoring involved measuring the bending of the tubular piles which was done by placing vibrating wire strain gauges on the upslope and down slope sides of the piles along the length of the pile. With this model, the slope stability under load were analyzed numerically. Pore water pressures and slope stability oxford academic journals. The natural complexities of geology can have serious impacts on the cost, usability, and safety of structures. The software can be used with the vj tech ring shear.
Gregeo now provides geotechnical engineering consulting and analysis on. A computer program for slope stability calculations educational version of the utexas4 and texgraf4 software important notice. It is also ideal for slope stability investigation and leachate extraction. And then the slope model was established accord with these parameters. Slope stability refers to the condition of inclined soil or rock slopes to withstand or undergo movement. Dec 16, 2016 slope stability by geo slope software please like and subscribe for an nguyens channel to watch the new videos. Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. The term landslide refers to a situation of instability affecting natural slopes and involving large volumes of soil. The stability and safety of the excavation was monitored using selected nails instrumented with low profile strain gauges for additional information, please contact.
Slope stability and safety assessment and recommendations. Vw piezometers were installed on steep embankments. Vibrating wire piezometers are the electrical piezometers of choice as the frequency output of vw devices is immune to external electrical noise, and able to tolerate wet wiring common in geotechnical applications. The wick drains are intended to promote the rate of settlement and to minimize pore pressure increases. With specialist knowledge in this area, rca provides reliable and accurate hazard and risk assessments to ensure all projects proceed with confidence and safety. Piezometers designed for the measurement of ground water elevations, pore water pressures, uplift pressures in dam foundations, hydraulic pressures in tanks and pipelines, etc. Geostase is a 2d limit equilibrium slope stability analysis software program developed by dr. Slope stability software geotechnical engineering 101 and more. Slopew is a twodimensional limit equilibrium stability analysis software program that permits slope stability calculation using various limit equilibrium methods. Is there any free software available for slope stability. Typically used for understanding initial site condition, determining safe rates for placement of fill, predicting slope stability. The name geostase is an acronym for general equilibrium options for stability analysis of slopes and embankments. They are typically sealed in boreholes but can also be embedded in fills, or suspended in a well. Rst vibrating wire piezometers are shipped with extremely tough polyurethanejacketed foilshielded cable for maximum endurance in field conditions.
Which one would be the best suited for the soil slope. Of the software which is currently available from rocscience, half of all programs are either specifically dedicated to slope stability analysis ie. Is there any free software available for slope stability analysis. We are experienced in design, installation techniques, and monitoring requirements for geotechnical instrumentation such as settlement cells, vibrating wire piezometers, and slope inclinometers, among others. Create a free account and view content that fits your specific interests in geotechnical. There is plenty of software available these days to do pretty much everything one can think of. Rapid drawdown is an important condition controlling the design of the upstream slope in embankment dams and levees. Chapter 10 slope stability analysis nysdot geotechnical page 104 january 21, 2014 design manual 10. Ge, principal consultant with gregory geotechnical gregeo. Simplified users guide to timedomainreflectometry monitoring of slope stability figure 4basic tdr system components. The commercial limit equilibrium programs all do the basics i.
Typically used for understanding initial site condition, determining safe rates for placement of fill, predicting slope stability, designing for lateral earth pressure and evaluating the effectiveness of drainage schemes. Galena is a powerful, comprehensive and easytouse slope stability analysis system developed by geotechnical engineers for geotechnical, mining and civil engineers who want to solve geotechnical problems quickly and easily. It consists of filter tip joined to a riser pipe that extends to the surface. There are different research software are there to analyses the slope stability. Rsts pushin standpipe piezometer is used in soft clays, organic and fine grained cohesionless soils.
Stability analyses were performed using the computer program slopew, part of the geotechnical analysis software package geostudio 2012, developed by geoslope international, ltd. Slopew is the leading slope stability software for soil and rock slopes. Slide 2d limit equilibrium slope stability analysis software. Special specification 5990 vibrating wire and standpipe. By combining instrumentation types, a full array of stability. Slope stability back analysis using rocscience software a question we are frequently asked is, can slide do back analysis. Utexas4 is a computer software application for computing the stability of earth and earthrock slopes and embankments. The term slope means a portion of the natural slope whose original profile has been modified by artificial interventions relevant with respect to stability. Immediate delivery is available for all vw2100 piezometer ranges. The answer is yes, as we will discover in this article, which describes various methods of back. Tubular piles were used mainly to stabilise the landslide, but monitoring was also carried out on piles at strategic locations within the slope. Slope stability back analysis using rocscience software.
Not all slope stability software is real expensive. Geotechnical engineering is the branch of civil engineering which focuses on the engineering behavior of earthen materials and the impact that the subsurface conditions will have on the proposed project. Stability analyses were performed using the computer program slope w, part of the geotechnical analysis software package geostudio 2012, developed by geo slope international, ltd. Piezometers provide information on initial site condition, slope stability, and more. Typical applications include evaluating slope stability, dewatering and drainage schemes, overpressure in silt and clay soils, permeability and hydraulic gradients in dams, and also ground water levels. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of. Rockpack iii software consulting and training rockware. Slope w is the leading slope stability software for soil and rock slopes. Typical slope stability software can analyze the stability of generally layered soil slopes, embankments, earth cuts, and anchored sheeting structures. Electric piezometers consist of a deflecting diaphragm and a porous filter separated by a small reservoir of water. A seepage cutoff such as a clayfilled trench may be constructed through a sand layer to slow the seepage and lower the piezometric elevation under the downstream slope as shown in figure 3. This paper presents the upstream slope failure at san luis dam as a case study for performing effective stress drawdown stability analyses. Department simplified users forest service guide to. It is also ideal for slope stability investigation and.
The rst vibrating wire piezometer provides excellent longterm accuracy, stability of readings and reliability under demanding geotechnical conditions. Slope stability analysis slopew is the leading slope stability software for soil and rock slopes. I am shopping for software that will perform basic slope stability analysis. Rockpack iii is applicable to practically all rock excavations, including highway roadcuts, quarries, mines, and building excavations. Slope stability is influenced by many factors, among which are subsoil. It is essential that the engineering geologist be intimately familiar with all of these methods because they provide ways of determining, relatively unambiguously, whether a. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Both vibrating wire or electrical piezometers are robust, have excellent long term stability and can be used with long cable lengths without any signal degradation. Slope w is a twodimensional limit equilibrium stability analysis software program that permits slope stability calculation using various limit equilibrium methods. As a geotechnical engineer, the software programs i have used most often have to be the ones available for slope stability or for geogrid design of a soil slope, besides using autocad and gint. Instrumentation and monitoring program tva coal combustion by. Pdf role of realtime monitoring in slope stability researchgate. Jan 04, 2007 choice of slope stability software is very personal. The software in general is very good and ties in well with the way we do things here.
Slope stability analysis slope w is the leading slope stability software for soil and rock slopes. Cable tester a cable tester that has been used successfully for slope stability tdr measurements is the tektronix metallic timedomain reflectometer model 1502b. Evaluating and maintaining piezometers, relief wells, and drains charles n. Cable tester a cable tester that has been used successfully for slope stability tdr measurements is the tektronix metallic timedomain reflectometer model. Several geotechnical instruments such as piezometer, tensiometer. This type of analysis is also utilized to determine. The graphics and the pointandclick data input are also very good and makes the program very easy to use. A wide variety of slope stability software use the limit equilibrium concept with automatic critical slip surface determination. I need software to calculate the factor of safety and carry out a kinematic analysis for different landslide types. Slope stability software geotechnical engineering 101. A change in the stability of a slope can be caused by a number of. The excavation for the hannam road expansion project was supported by a system of soil nails. Would like it to be user friendly and possibly have some initial tech support as i am learning to use it.
A range of piezometers for the measurement of pore water pressure and groundwater levels within soil and rock. Slope w can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. Piezometers measure porewater pressure and ground water levels. Database realtime monitoring software geoauto datasheet 972018 webbased monitoring system gtgis datasheet 972018 database management system gtmrt datasheet 972018. What is the best software to analyse the slope stability. Wright of shinoak software, who is wellrecognized as one of the leading experts in solving problems in soil strength and slope stability duncan and wright, 2005. This software and all associated electronic media and documentation are provided for use by the faculty and students of the licensed university or educational institution for educational purposes only. Monitor dam performance, rate of construction, slope stability assessment, ground improvements. Dam safety monitoring program for earthen dams why, when and where it should be used. The stability condition of slopes is a subject of study and research in soil mechanics, geotechnical engineering and engineering geology. Long range displacement transducers survey the movements of the slope, while special piezometers and temperature sensors, designed to withstand the high temperatures and acidic conditions, monitor the temperatures and water levels at depths of up to 50 m. Due to the angle of the embankments, access to the piezometers and dataloggers was impractical and could have been dangerous and so each piezometer was connected to a single channel vw wisos 480 node so that groundwater monitoring could.
All types of soil and rock slopes, embankments, earth dams and retaining walls can be analyzed. I do slope stability analysis for the mining industry and mainly use two, 2d limit equilibrium analysis programs. The wms is a software platform designed and developed by field srl to validate. Piezometers electrical resistance or vibrating wire are designed for accurate and long term pore water pressure measurement in fully or partially saturated soil and rock. Slope stability verification manual deep excavation llc page 11 e. The vj tech clisp studio ringhear software module enables the user to perform tests to determine the residual shear strength of cohesive soils, which is particularly important when assessing slope stability. Slope stability analyses include static and dynamic, analytical or empirical methods to evaluate the stability of earth and rockfill dams, embankments. Ground model development based on geotechnicalenvironmental data analysis. Assessment of groundbased monitoring techniques applied to. Careful monitoring and examination of slopes for failure warning signs is. Piezometers in the downstream zones can show whether the drains are working properly. Mine slope stability is one of the most important factors in any excavation project. In order to investigate the influence of different soil nailing parameters on the safety factor of a slope, the slope stability is analyzed by the geostudio software with different analysis methods.
By biaxial test of soil particle flow simulation program, the corresponding relationship between macro and micro parameters were obtained firstly. Galena is a powerful, comprehensive and easytouse slope stability analysis system developed by geotechnical engineers for geotechnical, mining and civil engineers who want to solve geotechnical problems quickly and easily galena is one of the worlds leading slope stability analysis packages now used in 74 countries, in some of the worlds largest mining operations. In the lecture part of this course we will discuss a variety of methods of analysis of slope stability and instability. Wssi is located about 30 km southeast of sofia on a steep slope underlain by layers of gneiss and schist, and a widely fluctuating groundwater table. Software for slope stability analysis slope stability. Utexas analyze the stability of complex slopes software.