Groundwater CONTROL Field Testing, Monitoring and Modelling
SEMINAR AND WORKSHOP
Friday 23 March 2018 @ 09:00 – 16:30
OGI Groundwater Specialists, DURHAM, UK
£195 + VAT Per Person
Who Should Attend
This seminar and workshop is aimed an industry professionals who work within the construction industry. It provides essential CPD for:
· Geotechnical Engineers
· Engineering Geologists
· Temporary Works Engineers
· Engineering Consultants
· Project Managers
ABOUT THE SEMINAR
This seminar and workshop will present you the fundamentals of groundwater control. This will include the theory of groundwater flow through porous saturated ground, field pump testing and monitoring, modelling aquifer pump and injection tests, and the simulation of groundwater control systems. Participants will benefit from hands on modelling using complimentary groundwater modelling software GEMOS-LITE and CVM10-LITE. Attendants will get to participate in a model size 25m long aquifer pump test, which will include setting up the pump, monitoring groundwater levels, and modelling results using CVM10-LITE.
- Overview of the Theory of Groundwater Behaviour
- Pump testing procedures
- Conducting pump testing from model aquifer in practice
- Measurement of pumping rates and monitoring of drawdown
- Input of data into spreadsheets
- Translation of data to metres OD
- Simulation of monitored water table response using a Finite Element Model (CVM10-LITE)
- Back-calculation of aquifer parameters using Finite Element Analysis
- Design of Groundwater Control Systems using Computer software
- Overview of Groundwater Control techniques and cases studies.
The attendee will use CVM10-LITE to model the pump test. It is a finite element model for transient groundwater flow in confined, unconfined and leaky aquifers. This model enables the user to determine soil parameters such as permeability, storativity and leakage coefficient from aquifer pump and injection tests.
Below: Simulating the results of a pumping test in London Chalk to assess Transmissivity and Storage Coefficient.
Whenever an excavation is made below the water table there is a risk that it will become unstable or flood unless measures are taken to control the groundwater in the surrounding soil. This seminar and workshop will provide guidance on how a dewatering system consisting of multiple wells can intercept the groundwater to prevent inflow to the excavation. This will be illustrated using GEMOS-LITE, a tool for simulating multi-well steady state groundwater flow.
Below: Simulating a groundwater control operation to enable the lowering of the water table beneath a shaft.
· Learn from experienced professionals in industry
· Increase your understanding of groundwater control theory and modelling
· Simulate groundwater control dewatering systems
· Model aquifer pump and injection tests
As well as the software, the day includes refreshments, a Q&A session to consolidate your knowledge, and a chance to network with colleagues from across the industry.
09:00 Arrival and Registration
09:30 PART A – Groundwater Theory
PART B – Introduction to Groundwater Modelling
PART C – Simulation of Dewatering Systems (GEMOS-2017)
PART D – Aquifer Pump Test Experiment
PART E – Modelling Aquifer Pump and Injection Tests (CVM10-PRO)
16:30 Close and Networking
Dr Stephen Thomas
Eur Ing Dr Stephen Thomas is a chartered British and European Civil Engineer, and Fellow of the Institution of Civil Engineers. He is a registered Ground Engineering Adviser (RoGEP), with a first class honours degree in Civil Engineering and MSc from the University of Wales, a Doctorate from Oxford University and MBA from Durham University. Stephen is also an Honorary Fellow at the Durham University Department of Earth Sciences. Stephen is Managing Director of OGI Groundwater Specialists which he founded 1989. This year celebrates 28 years of continued business solving groundwater problems in soft ground throughout the UK and overseas.
Dr Graham Richardson
Graham has been with OGI Groundwater Specialists Ltd, for the past 16 years where he has been heavily involved in the ground energy and groundwater engineering industries. Since joining OGI in 2002, Graham has been involved in the assessment and project management of ground energy and groundwater control projects, and the design and installation of ground energy and groundwater control systems for major construction and civil engineering projects across the UK.
George French started working at OGI in 2015, soon after graduating from Durham University where he achieved a MSci honours degree in Geoscience. Since working at OGI, George has developed expertise in complex regional and local groundwater modelling, the design of dewatering systems, and software development of the latest OGI groundwater modelling products such as CVM10-PRO.
Tom is an Engineering Hydrogeologist at OGI Groundwater Specialists Ltd. He has five years of experience working both in the office and field, domestically and internationally. His disciplines of hydrogeology, geotechnical engineering and groundwater management. Whilst at OGI, Tom has attained substantial responsibility in major ground and groundwater projects, with involvement in over fifty construction dewatering, slope engineering and artesian pressure reduction system designs.
OGI Groundwater Specialists Ltd.
One St John’s Court
St John’s Road
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