Thames Water has initiated clay compaction trials to assess ground conditions for a new reservoir in Oxfordshire, critical to future water needs.
- Costain has been contracted to perform the trials, influencing the design and construction of the proposed reservoir.
- Three test embankments will be constructed on the site using Kimmeridge clay, mirroring the proposed design.
- The trials are vital for providing data to secure government approval and development consent.
- Costain will also ensure safety and environmental standards are met throughout the process.
Thames Water has commenced a series of clay compaction trials to thoroughly understand the ground conditions at the location earmarked for a new reservoir in Oxfordshire. This step is pivotal in preparing for the development of what is referred to as the southeast strategic reservoir option (SESRO), projected to hold 150 million cubic metres of water near Abingdon.
The contract for conducting these trials has been awarded to Costain, a company known for its extensive experience in infrastructure projects. Costain will erect three test embankments within the area owned by Thames Water, each roughly 50 metres long, 20 metres wide, and up to three metres high. The tests will assess the properties of Kimmeridge clay under varying compaction scenarios, which is crucial for determining how the embankments of the reservoir should be constructed.
Data collected from these trials will directly inform the reservoir’s embankment design and its construction methodology. Costain’s expertise in providing constructability advice plays an essential role here, offering valuable input on sequencing, tunnelling, and integration with existing rail infrastructure.
Furthermore, Costain is charged with ensuring comprehensive adherence to safety, health, environment, and quality (SHEQ) protocols. Their team will also coordinate all necessary archaeological assessments, consolidating logistical planning to facilitate smooth progress during the trials.
These trials are anticipated to span between six and twelve months, contingent on weather conditions, after which the landscape will be meticulously restored. Costain’s Graham Sugrue emphasises the importance of updating water infrastructure to cope with rising demand and the effects of climate change. He acknowledges the collaboration with Thames Water as a significant endeavour, underscoring the multifaceted expertise of Costain’s team in guiding this critical infrastructure project.
The clay compaction trials are foundational for designing a resilient and efficient reservoir, essential for meeting future water demands.
