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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

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

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

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

Lyndell Juggernaut Msc (Geology) shares his thoughts on industry best practise for marking up core for geotechnical logging in his article in Coring Magazine. This is what should be done regardless of whether the hole is to be used for geotech! Let's all contribute to lower project risk by measuring core properly, marking it up, and leaving it in a fit state to be logged.

📢 Our Short Course on Geotechnical Earthquake Engineering and Liquefaction is now open for registration! Take part in our comprehensive 2-day course covering PM4S and PM4Silt, led by three expert international presenters. Explore Constitutive models and their application in nonlinear dynamic analyses of liquefaction and cyclic softening during earthquakes. 📅 Day 1: A review of background information and underlying fundamentals, focusing on details and procedures important to using the numerical models in practice. Focus on the PM4Sand constitutive model, calibration procedures for engineering applications, and hands-on calibration exercises. 📅 Day 2: Coverage of the PM4Silt constitutive model, calibration procedures, and hands-on exercises. Challenges and lessons learned from calibrations. Selected case histories, including a Tailings Storage Facility (TSF), to assess the performance of the PM4Sand/PM4Silt models. 🎟️ Don’t miss this chance to enhance your expertise in this critical area of geotechnical engineering! 👉 Register here https://lnkd.in/gEY9q3gp

⚛️🚀 Underground construction is key in mining and urban projects. In the mining industry, the construction of tunnels and underground structures is achieved through various methods. 🌉 Some of the most used techniques are still and blast method, TBM, sequential methods, cut and cover, NATM, etc 👨🏻🏫 Drill and blast is a traditional technique whete explosives are used to break rock. Tunnel Boring Machines (TBMs) are humongous high tech engineering machines that provide precise excavation with minimal surface disruption. Cut-and-cover is generally used for shallow tunnels, where a trench is dug and then covered. Sequential Excavation Method (SEM) adapts to varying ground conditions with staged support. New Austrian Tunneling Method (NATM) uses sequential excavation with flexible, reinforced shotcrete. For deeper mines, shaft sinking and raise boring create vertical access. 🚨 Many times combined approaches of these methods provide efficiency and safety based on geological and project-specific requirements to achieve desired goals of the project #science #engineering #geology #design #creativity #innovation #construction #STEM 👨🏻🏫 Follow Felipe Ochoa Cornejo 👨🏻🏫🇨🇱 for creative engineering, geology, science, and technology

Tunnel diaries 2.0- *The whole is always more than the sum total of its parts* Many would think this is not the right choice of title for a topic that ensues. But then just bear with me .. … In tunneling, the rocks are as much a part of the team as the people working on-site. Understanding their behavior can make all the difference. Tunneling is all about understanding and respecting what lies in between your obligatory pts . Each rock type brings its own set of challenges that, if ignored, can lead to project delays, structural issues, and even catastrophic failures.Engineers who team up with Geologists and are proactive about identifying and mitigating the risks associated with these rocks ultimately save time, costs, and lives. Today let’s examine a few of these - 1. Serpentine and Serpentinization Serpentine is notorious in tunneling for its high susceptibility to serpentinization—a process where minerals alter in the presence of water, weakening the rock. This transformation can make the rock highly unpredictable, leading to swelling and even collapse under pressure. Robust reinforcement and additional drainage to keep water intrusion minimal is the need of hour here. 2. Mudstone and Shale Shale and mudstone, known for their layered structures, pose a challenge as they can easily split along bedding planes. These rocks are highly susceptible to swelling and crumbling when exposed to moisture. Stabilization may demand systematic rock bolting and sprayed concrete lining to prevent layers from separating. 3. Tuff and Pyroclastic Deposits Formed from volcanic ash, tuff can be deceptively strong on the surface but brittle when disturbed leading to inconsistent support needs along the tunnel, requirement to adapt their support systems frequently. Tunneling through tuff typically involves using flexible support methods, such as yielding arches or rock bolts, to account for its varying stability. 4. Diabase and Amphibolite These dense rocks are strong but can be brittle and prone to cracking under tunneling stress. The real challenge here is managing the potential for sudden rock bursts or fractures, often mitigated with pre-tensioned bolts and dynamic ground-support systems. 5. Peridotite Known for its high magnesium and iron content, peridotite can react with water to produce serpentine, much like the previous rock. The presence of peridotite usually signals a need for heightened attention to potential serpentinization. Employing pre-reinforcement and continuous monitoring of moisture levels during excavation might help here. 6. Black Schist and Shalstein Schist and shalstein, known for their flaky, mica-rich composition, can cause issues with stability. The inherent weakness along schistosity planes makes them prone to collapse under high insitu stress . Deal with it using reinforced ribs and advanced shotcrete techniques, ensuring the rock mass is adequately supported. #tunnels #tunnelling #underground space Engineering@MITWPU .

This refers to the #complex problem of ensuring safety in construction projects, where various factors such as #soil_conditions, structural integrity, and environmental risks need to be carefully considered and managed to prevent accidents and ensure the success of the project. Want to find out more, Contact Us: +256 770836731 Follow us: ORESOIL Geotechnical services #geology #construction #engineering #civilengineering #mining #followforfollowback #soil #mechanics #challenges #news #geo #structuralengineer #environmental #office #nema #civilengineer #miningengineering #architect #design #houses

🌍 Subsidence is a general term for downward vertical movement of the Earth’s surface, which can be caused by both natural processes and human activities. ↕️ Subsidence involves little or no horizontal movement, which distinguishes it from slope movement. 💧 Processes that lead to subsidence include dissolution of underlying carbonate rock by groundwater; gradual compaction of sediments; withdrawal of fluid lava from beneath a solidified crust of rock; mining; pumping of subsurface fluids, such as groundwater or petroleum; or warping of the Earth’s crust by tectonic forces. 🌋 Subsidence resulting from tectonic deformation of the crust is known as tectonic subsidence and can create accommodation for sediments to accumulate and eventually lithify into sedimentary rock. 🏙️ Ground subsidence is of global concern to geologists, geotechnical engineers, surveyors, engineers, urban planners, landowners, and the public in general. Pumping of groundwater or petroleum has led to subsidence of as much as 9 meters (30 ft) in many locations around the world and incurring costs measured in hundreds of millions of US dollars. Source and photo credit: #Subsidence #EarthSurface #NaturalProcesses #HumanActivities #SlopeMovement #Groundwater #Mining #TectonicForces #TectonicSubsidence #SedimentaryRock #Geology #GeotechnicalEngineering #UrbanPlanning #GroundSubsidence #Geomechanics