ANCOLD The Australian National Committee on Large Dams Inc.’s Post

New Blog Post: Best Practices for Seismic Assessment of Slopes Geocomp, Inc. and GeoTesting Express, LLC latest blog, authored by Senior Project Manager Seda Gokyer Erbis, PE, PhD, with Geocomp's Consulting Group, provides in-depth insights into the Best Applicable Practices (BAP) for seismic slope stability assessments. This blog highlights crucial strategies for managing seismic risk and ensuring compliance with regulatory requirements. With more than 13 years of experience in geotechnical and earthquake engineering, Seda brings extensive knowledge to the table. As the leader of one of Geocomp’s largest seismic assessment projects, she shares her hands-on expertise on essential steps such as site reviews, subsurface characterization, and seismic load assessments. Key highlights of the blog include practical techniques like 2D amplification analysis and displacement-compatible load coefficients, offering asset owners reliable and cost-effective ways to achieve stability results. Don’t miss out on Seda’s expert knowledge, drawn from her numerous contributions to ASCE and ASTM publications in the field of geotechnical engineering. Read the full blog here: https://hubs.la/Q02Ygg1Z0 #SeismicAssessment #SlopeStability #EngineeringInsights #BestApplicablePractices #GeotechExperts #RiskManagement

#SoilScience_Quotations #Question_Answer What are some common challenges you may encounter during geotechnical investigations? During geotechnical investigations, we may encounter several challenges that require careful consideration. One common challenge is dealing with difficult soil conditions, such as highly cohesive or expansive soils, which can significantly impact foundation design. Another challenge is assessing the presence of groundwater and its effect on the stability of excavations or foundations. Additionally, investigating sites with limited access or in remote locations can pose logistical challenges for drilling and fieldwork. Furthermore, encountering unexpected subsurface conditions, such as buried debris or old foundations, can complicate the investigation process. It's important to approach these challenges with a systematic and adaptable approach, utilizing appropriate testing methods and techniques to accurately evaluate the site's geotechnical properties. #geotechnicalengineering #earthworks #engineering #soilmechanics #soilstabilization #soiltesting #geomembrane #geosynthetics #geophysical

#SoilScience_Quotations #Question_Answer Can you explain the process of conducting a site assessment and geotechnical investigation? Conducting a site assessment and geotechnical investigation involves several steps. First, we need to gather information about the site, such as its location, topography, and any available geologic maps or reports. Then, we conduct fieldwork, which includes drilling boreholes, collecting soil samples, and performing in-situ tests like Standard Penetration Test (SPT) or Cone Penetration Test (CPT). These tests help us determine the soil properties and subsurface conditions. We also assess any potential construction challenges, such as slope stability or groundwater issues. Finally, we analyze the collected data and prepare a geotechnical report that provides recommendations for foundation design and construction methods. This process is crucial to ensure the safety and integrity of any construction project. By understanding the site's geotechnical characteristics, we can make informed decisions and mitigate potential risks. #geotechnicalengineering #earthworks #engineering #soilmechanics #soilstabilization #soiltesting #geomembrane #geosynthetics #geophysical

Tunnel breakthrough using a road header offers flexibility, particularly in complex geological conditions, but it's slower and more labour-intensive. In this method ground support and secondary lining will be done separately. In contrast, a Tunnel Boring Machine (TBM) provides faster excavation and a smoother tunnel lining, making it ideal for long, uniform tunnels. Segmental lining is installed as the TBM progresses. However, TBMs are less adaptable to changing geology and require extensive setup. The choice between these methods depends on the project’s specific needs, such as geology, tunnel length, and timeline. You can learn all tunnelling methods in our Online Tunnel Engineering course. Click the link below 👇 https://lnkd.in/ePXRpUk5 Follow us at Tunnel Engineering #tunnel #construction #engineering #infrastructure #roadheader #TBM #excavation #geology #mining #civilengineering #tunneling #technology #projectmanagement #underground #constructiontech #innovation #mechanicalengineering #safety #transportation #InfrastructureDevelopment #tunnelenginerring #tunnelling #breakthrough

Liquefaction is a critical concern in geotechnical engineering, especially in earthquake-prone areas. At MPERA, we delve into the complexities of soil behavior under seismic activity to assess liquefaction susceptibility, evaluate probability, and design effective mitigation strategies for the desired performance. We tailor our approach to meet project and performance needs, utilizing everything from empirical methods to cutting-edge numerical analyses to ensure safety and resilience. Curious about how we tackle liquefaction? Let's discuss! #GeotechnicalEngineering #EarthquakeSafety #MPERA

Rock quality designation (RQD) is a widely used index in geotechnical engineering and rock mechanics for characterizing the quality of rock masses. RQD is an essential parameter for rock mass classification, which is necessary for the design and construction of various engineering structures such as tunnels, dams, mines, and slopes. The RQD values are used to classify rock masses into different categories, based on the degree of fragmentation and the quality of the rock mass. The categories of rock masses based on RQD are: Very Poor Rock Mass: RQD values less than 25% indicate a very poor rock mass, which is highly fragmented and has low strength and stiffness. Poor Rock Mass: RQD values between 25% and 50% indicate a poor rock mass, which is moderately fragmented and has moderate strength and stiffness. Fair Rock Mass: RQD values between 50% and 75% indicate a fair rock mass, which is less fragmented and has high strength and stiffness. Good Rock Mass: RQD values between 75% and 90% indicate a good rock mass, which is almost intact and has very high strength and stiffness. Excellent Rock Mass: RQD values greater than 90% indicate an excellent rock mass, which is completely intact and has extremely high strength and stiffness. RQD % Quality <25 Very poor 25–50 Poor 50–75 Fair 75–90 Good 90–100 Very good #rock #geology #engineering #civilengineering #corecutting #corebox #soiltest #sbc #soil

Kindly go through it on the application of Slope Mass Rating (SMR) in geotechnical engineering! SMR helps quantify rock slope stability, enhancing our ability to assess risks and optimize design strategies. #GeotechnicalEngineering #SlopeMassRating #EngineeringInsights

🚨 **Publication Alert!** 🚨 I am happy to share that my another research paper on "Experimental study on performance of soil-pile-raft-structural system and estimation of piled-raft coefficient under seismic excitations" has been published in "Engineering Structures (Elsevier), Q1" I would like to thank my supervisor Dr. Manojit Samanta sir for his guidance and support during the research work. Key Highlights: • Experimental Investigation on seismic performance of SPRSI system using a laminar shear box under sandy soil conditions. • Estimation of Piled-Raft Coefficient Subjected to Different Earthquakes through Shaking Table Tests. • Influence of spacing between piles and number of piles in the piled-raft foundation on seismic performance of SPRSI system. • Influence of aspect ratio of building, RD of soil, & characteristics of input ground motion on performance of SPRSI system. Check out the full paper here: https://lnkd.in/gAN5yiyP #StructuralEngineering, #SeismicPerformance, #SoilPileRaftStructureInteraction, #EngineeringResearch, #EarthquakeEngineering, #GeotechnicalEngineering, #PiledRaftFoundation

🌍 Bridging Ground Realities: Engineering Across the UK and Turkey 🌍 Our Consulting Manager Önder Yönlü draws on his experience working in the geotechnical industry in both Turkey and the UK for this Ground Engineering Magazine article. Discover more about how the complex rugged terrain of Turkey and the simple, straightforward geology of the UK have influenced the geotechnical practices and standards of the industries and how we can use Geo-data to understand these variations. 📚🔍 Read the full article below #Fugro #GE #GroundEngineering #Geotechnical

5th National Geotechnical Conference and 2nd International Conference on Earthquake and Seismic Geotechnical Engineering, Azarbaijan Shahid Madani University, October 2023, Tabriz, "Investigation of the effects of far-field earthquakes on the behavior of downstream tailings dams". Tailings are the residues left over from the extraction of metallic and non-metallic materials from mining operations, which can be toxic and a source of environmental pollution. They are typically stored in the tailings storage facilities (TSFs). A tailings dam is a large embankment constructed to retain mining waste, especially fine tailings (slurry). Obviously, the failure of such a geostructure is directly related not only to public health and safety, but also to the risk it poses to the environment.  Every year at least one or two tailings dam failures occur around the world, causing many injuries, environmental pollution and financial losses to mine owners. This is certainly more pronounced where there is a seismic risk, as confirmed by the report of the International Commission on Large Dams (ICOLD). On the other hand, as the daily production of minerals increases, so does the volume of tailings, making it necessary to increase the height of the dam and thus the capacity of the dam. Therefore, the influence of the dam height on the seismic behavior of tailings dams needs to be evaluated.  Therefore, the effects of dam height and foundation materials on the seismic behavior were investigated in terms of input acceleration, magnification, and permanent displacements. To perform the analysis, the static behavior of the dams was first investigated in eight cases with heights of 20, 50, 80, and 100 meters, two types of bedrock and alluvial foundations, and three loading stages such as end of construction, initial impoundment, and steady seepage. Dynamic analysis was then performed on all cases using seven far-field earthquake acceleration time histories from the literature.