Trial Drill and Grout of Potential Mine Workings
Geotechnical consultancy and drilling/grouting support for a housing development affected by historic mine working risk.
The Project
EnviroSolution were contacted by a small housing developer to provide geotechnical consultancy regarding potential ground stability issues related to historic mine workings for a site in Bolton. The client required planning permission for 14 residential dwellings within a development high-risk area for historic coal mine workings.
The Challenge
The project required scope preparation, tender documents, Coal Authority permits, project management and supervision of drilling and grouting works before development could progress confidently.
The Solution
EnviroSolution produced a scope of works designed to investigate and treat potential mine workings beneath the site, with works undertaken under Coal Authority permission. Probe hole locations targeted proposed building footprints to minimise treatment area and reduce costs. Sixteen trial drill and grout holes were completed.
The Benefit
No evidence of historic mine workings was recorded. By combining drilling and grouting treatment works, EnviroSolution helped save time and cost and supported the client’s development programme.
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