VGeotech Experts Pvt. Ltd ( NABL Laboratory)’s Post

I kept this beat up geoprobe sampling shoe as a reminder of one of the most extensive Phase II Investigations I was fortunate to execute and successfully complete. A catastrophic release caused thousands of gallons of methylene chloride to impact soil and groundwater. After a recovery system was installed, more methylene chloride was recovered than released. A scope of work, prepared by Jeff Pope, consisting of a grid of approximately 75 borings to be continuously sampled at discrete intervals to depths of 15 to 20 below ground surface was developed in an effort to locate indications of additional releases. As the staff geologist completing the field investigation, my responsibilities were to: locate and set up the sampling grid with Jeff Pope; complete all field testing and identification of soil samples collected, screen each discrete soil sample with a 10.2 eV bulb and a 11.6 eV bulb PID; submit all soil samples to the onsite mobile lab for analysis; submit 10% of soil samples to an offsite lab for analysis; assist Dave Wagner, geoprobe operator with the drilling and recovery of soil samples; and determine if the extent of methylene chloride impacts were defined. As the investigation moved north ward, it became apparent that additional geoprobe borings to greater depths was going to be necessary. Over parts of 1995 and 1996, the investigation grew from 75 locations to 120 locations. The depths of discrete continuous soil sample collection went from 20 feet to over 110 feet below ground surface. These depths were unheard of for geoprobe units back then but it made it like a champ. With the assistance of Dan Lombardi, we were able to incorporate the field data into a software modeling program. The results were eye opening. We not only found the obvious catastrophic release source, but we also found releases at every connection point of the remote fill line to the tank, at the remote fill location and at every building exhaust point. Methylene chloride essentially evaporates as soon as it is released. In this case, as the building was ventilating the interior, the methylene chloride would be ventilated to the outside, attach itself to the water vapor and fall right to the ground surface. The results of this extensive Phase II investigation was able to define both vertically and horizontally the extent of methylene chloride impacts and put the project on a solid foundation for successfully remediating the property. All this, and more, from a beat up geoprobe sampling shoe.

We recently concluded a project aimed to investigate ground conditions for an upcoming cavern construction, conducted under strict confidentiality. Extensive drilling was undertaken up to depths of 200 meters, including both vertical and inclined boreholes, to collect core samples. Following activities like drilling, comprehensive borehole geophysical logging, Hydrogeological studies and other relevant studies were conducted, encompassing: ·       Drilling: Vertical and inclined boreholes up to 200 meters deep to obtain core samples. ·       Borehole Geophysical Logging: o  Acoustic Televiewer Studies: Used with Wellcad software to analyse borehole logs, including Rock Mass Rating (RMR) and identifying discontinuities. o  Electrical Logging: Studies lithology, permeability, porosity, and geological properties. o  Sonic Logging: Provides information on rock matrix structure, including modulus properties, porosity, and permeability.   ·       Hydraulic Fracturing: Used to calculate in-situ stress (K value) in vertical boreholes, crucial for cavern design. ·       SRT (Seismic Refraction Tomography) and ERT (Electrical Resistivity Tomography): Used to study ground physical properties and detect cavities, enhancing interpretation confidence. ·       Pumping Test: Conducted in boreholes up to 60 meters deep to estimate aquifer hydraulic properties, well performance, and aquifer boundaries. ·       Packer Test: Used for estimating hydraulic conductivity by isolating sections of boreholes and analysing pressure/flow rate responses during controlled water injection. These techniques collectively provide a detailed understanding of the geological and hydrogeological conditions at the project site, essential for planning and executing cavern construction safely and efficiently. Based on the comprehensive data collected through extensive drilling, geophysical logging, and hydrogeological assessments, it is evident that a high-quality investigation was conducted. The correlation of all gathered data demonstrates robust consistency and reliability. This cohesive dataset has significantly enhanced confidence in the parameters used for cavern design. The seamless integration and alignment of various findings—ranging from geological properties and rock structure to hydrogeological characteristics—have streamlined the process for our client. With this cohesive information at hand, designing the cavern has become a straightforward task, empowering the client to proceed with heightened assurance and precision. Subodh Kulkarni Siddhartha Kulkarni Ramesh Kulkarni #caverndesign #geotechnical #BHTV #hydrofracture #drilling

Excellence in quality always yields exceptional results. When meticulous investigations and precise data collection are prioritized, they lead to accurate and reliable outcomes. This dedication ensures that decisions are well-informed, risks are minimized, and projects succeed. High-quality work not only enhances the accuracy of the results but also paves the way for effective planning and successful execution. In the end, the commitment to quality truly makes a difference.

We are thrilled to announce a significant milestone in our recent project, where we successfully calculated the stresses on rock formations using the Hoek-Brown criteria. The Hoek-Brown failure criterion is a fundamental tool in geotechnical engineering and rock mechanics, allowing us to understand the complex behavior of rock masses under stress. By applying this method, we can more accurately predict the stability and strength of rock formations, which is crucial for ensuring the safety and efficiency of engineering projects. Our approach involved gathering comprehensive geological data, determining key parameters such as uniaxial compressive strength (UCS) and the Geological Strength Index (GSI), and conducting detailed stress analysis using the Hoek-Brown equations. This work will significantly contribute to enhanced safety, cost efficiency, and sustainable practices in construction and mining operations. We are immensely proud of our team of engineers and geologists for their dedication and expertise. We are open for collaboration and look forward to leveraging our findings in future projects. #GeotechnicalEngineering #RockMechanics #HoekBrownCriteria #EngineeringExcellence #InnovationInEngineering #Collaboration

𝐑𝐨𝐜𝐤 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐌𝐚𝐫𝐤𝐞𝐭 𝐊𝐞𝐲 𝐏𝐥𝐚𝐲𝐞𝐫𝐬, 𝐄𝐧𝐝 𝐔𝐬𝐞𝐫 𝐃𝐞𝐦𝐚𝐧𝐝 𝐚𝐧𝐝 𝐀𝐧𝐚𝐥𝐲𝐬𝐢𝐬 𝐆𝐫𝐨𝐰𝐭𝐡 𝐓𝐫𝐞𝐧𝐝𝐬 𝐛𝐲 𝟐𝟎𝟑𝟑 The Rock Testing Services Market focuses on the provision of testing and analysis services for various types of rocks and geological materials. These services are essential for assessing the properties, strength, durability, and suitability of rocks for construction, mining, geotechnical engineering, and other applications. Rock testing services involve a range of laboratory and field tests conducted to evaluate the physical, mechanical, and chemical characteristics of rocks, including their composition, porosity, permeability, compressive strength, tensile strength, and deformation behavior. 🔍 𝐌𝐚𝐫𝐤𝐞𝐭 𝐎𝐯𝐞𝐫𝐯𝐢𝐞𝐰: The Rock Testing Services Market caters to a diverse range of industries, including civil engineering, mining, oil and gas exploration, environmental consulting, infrastructure development, and geological research. Testing laboratories and service providers offer a wide array of standardized and customized testing procedures to meet the specific needs and requirements of clients. 𝐀𝐜𝐜𝐞𝐬𝐬 𝐭𝐡𝐞 𝐅𝐫𝐞𝐞 𝐒𝐚𝐦𝐩𝐥𝐞 𝐑𝐞𝐩𝐨𝐫𝐭 𝐇𝐞𝐫𝐞: https://lnkd.in/dVZjVXr8 🔍 𝐌𝐚𝐫𝐤𝐞𝐭 #Trends: ➡ Advanced Testing Techniques: The Rock Testing Services Market is witnessing the adoption of advanced testing techniques and equipment for more accurate and comprehensive analysis of rock properties. This includes the use of digital rock physics, 3D imaging, acoustic emission monitoring, and non-destructive testing methods such as ultrasonic testing, X-ray computed tomography (CT), and magnetic resonance imaging (MRI) for characterizing rock samples at the microstructural level. ➡ Focus on Sustainable Infrastructure: With growing emphasis on sustainable infrastructure development, there is an increasing demand for rock testing services to assess the suitability of natural and engineered materials for construction projects. 📈 𝐌𝐚𝐫𝐤𝐞𝐭 𝐒𝐞𝐠𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧𝐬: 𝐁𝐲 𝐂𝐨𝐦𝐩𝐚𝐧𝐲 • SGS • Geotechnics • GSTL • Criterion Scientific LLC • GeoTesting Express • Advanced Terra Testing Inc • Alpha Adroit Engineering Ltd. • Bamford Rock Testing Services (BRTS) • Stress Measurement Company Oy • Geocomp, Inc. and GeoTesting Express, LLC • T,C & A LAB • RESPEC • Zonge International • Standard Testing • ExGeo • FUDA Technology co., ltd. #Type • Laboratory Testing Services • On-site Inspection Services #Application • Energy Industry • Industrial • Commercial ✅ 𝐅𝐨𝐥𝐥𝐨𝐰-Stringent Datalytics - Information Technology #RockTesting #GeotechnicalTesting #RockMechanics #MaterialTesting #GeologicalTesting #EngineeringServices #QualityTesting #ConstructionIndustry #MiningIndustry

𝑮𝒆𝒐𝒕𝒆𝒄𝒉𝒏𝒊𝒄𝒂𝒍 𝑰𝒏𝒔𝒊𝒈𝒉𝒕 𝒇𝒓𝒐𝒎 𝒕𝒉𝒆 𝑭𝒊𝒆𝒍𝒅! Check out this impressive rock core retrieved from the latest geotechnical drilling project! 🪨👷♂️ Here's why RQD (Rock Quality Designation) and Core Recovery are crucial in geotechnical engineering: 𝑹𝒐𝒄𝒌 𝑸𝒖𝒂𝒍𝒊𝒕𝒚 𝑫𝒆𝒔𝒊𝒈𝒏𝒂𝒕𝒊𝒐𝒏 (𝑹𝑸𝑫): 📏 Measures the quality and degree of jointing or fracturing in a rock mass. 🧱 Helps in assessing the suitability of rock for construction purposes. 🌟 High RQD values indicate good quality rock, essential for stable foundations and underground excavations. ——————————————————— 📌 𝑪𝒐𝒓𝒆 𝑹𝒆𝒄𝒐𝒗𝒆𝒓𝒚: 📊 Represents the percentage of the drilled core that is successfully retrieved. 💡 Indicates the integrity and condition of the rock mass. 🚧 High core recovery rates suggest minimal disturbance and reliable data for engineering analysis. ——————————————————— Understanding these parameters is key to ensuring the safety and stability of construction projects. Stay tuned for more updates from the field! 🛠️ ===================== #geotechnicalengineering #construction #rockcore #RQD #corerecovery #geologist #earthscience #rocks #engineeringgeology

Designing and constructing reliable foundations and infrastructure requires a thorough understanding of soil, rock, and groundwater conditions. Through Terracon’s nationwide network of #geotechnical professionals, access to more than 50 years of historical subsurface exploration data from thousands of locations across the country, and GIS-enabled geology mapping, we can accurately anticipate ground conditions and develop an intelligent, safe work plan. Use the link below to learn about Terracon’s #Stage1PredictiveAnalysis, #SubsurfaceExploration, #LaboratoryTesting, and #GeostructuralDesignandInstrumentation services. #ExploreWithUs 

Geophysical borehole logging is brilliant! And we’ve been up to our armpits engaged in this very activity on not one but two of our sites this week. (When I say ‘we’ obviously no one in their right mind would want me probing their hole…) We’ve been working with actual borehole geophysics EXPERTS and assisting with geophysical data acquisition to provide critical data to our consultants regarding the properties of several boreholes we’ve recently drilled and installed. (When I say ‘assisting’ - I mean, generally getting in the way in my case. Richard and Paddy (Mark Smith) have been slightly more useful.) What is geophysical borehole logging - I hear you ask? It’s an essential ‘thing’ that helps us understand more about the construction, nature and properties of a borehole. In both cases this week, we’ve conducted geophysical logging of our newly drilled boreholes to verify the construction meets the required standards (it does). Additionally, the data collected has enabled our design engineers to gain a comprehensive understanding of each well's characteristics. Through a survey, we can also confirm that a borehole has been drilled according to the correct specifications, including borehole diameter and casing - or that it intersects with what its intended to intersect with, such as an aquifer. You don’t want your drilling to go all skewwhiff and end up penetrating something accidentally. Data gathered can also provide insights into the quality of the water a borehole will yield, giving information on things like salinity, flow, and water table height. If I remember right, we’ve done: Calliper Gamma Impeller flow (with an agitated flow property) Cement bond log And CCTV I asked Richard to try and explain it all a bit more for me, and he said the data will be used by our consultant to fully understand where flow horizons enter the borehole…flow horizons...that somehow romantic to me. And it will enable us to use the data during the design phase of the next boreholes on site - which is also brilliant. It’s all drilling, drilling, drilling, probing, probing, probing these days. Exhausting stuff. Shout out to Julian Hatherall from JH Ground water for his patience! And here's a rig picture for all your plant fanciers. #BoreholeGeophysics #WaterWell #WaterBorehole #GroundSourceHeating #Drilling #Probing #AndSoOn

Tunnel Diaries :-I see core discing in the core correct me if I am wrong … means there is brittle rock and high insitu stress ….This failure mode has been recognized as an important index for assessing underground projects under high in situ stresses. In vertical boreholes, core discing is a result of high horizontal stresses. As maximum horizontal stress increases, the average disc thickness consistently declines. In vertical boreholes, discing can determine the direction and approximate ratio of the horizontal principal stresses. Any asymmetry in the disc can give a measure of the inclination of the principal stress away from the vertical.Reposting it for a greater benefit…..Knowledge not shared is knowledge lost ….

📢 𝑮𝒆𝒐𝒕𝒆𝒄𝒉𝒏𝒊𝒄𝒂𝒍 𝑰𝒏𝒔𝒊𝒈𝒉𝒕 𝒇𝒓𝒐𝒎 𝒕𝒉𝒆 𝑭𝒊𝒆𝒍𝒅! 🌍🔍 📷Check out this impressive rock core retrieved from the latest geotechnical drilling project! 🪨👷♂️ Here's why RQD (Rock Quality Designation) and Core Recovery are crucial in geotechnical engineering: ——————————————————— 📌 𝑹𝒐𝒄𝒌 𝑸𝒖𝒂𝒍𝒊𝒕𝒚 𝑫𝒆𝒔𝒊𝒈𝒏𝒂𝒕𝒊𝒐𝒏 (𝑹𝑸𝑫): 📏 Measures the quality and degree of jointing or fracturing in a rock mass. 🧱 Helps in assessing the suitability of rock for construction purposes. 🌟 High RQD values indicate good quality rock, essential for stable foundations and underground excavations. ——————————————————— 📌 𝑪𝒐𝒓𝒆 𝑹𝒆𝒄𝒐𝒗𝒆𝒓𝒚: 📊 Represents the percentage of the drilled core that is successfully retrieved. 💡 Indicates the integrity and condition of the rock mass. 🚧 High core recovery rates suggest minimal disturbance and reliable data for engineering analysis. ——————————————————— Understanding these parameters is key to ensuring the safety and stability of construction projects. Stay tuned for more updates from the field! 🛠️🌐 ============================ #geotechnicalengineering #construction #rockcore #RQD #corerecovery #geologist #earthscience #rocks #engineeringgeology