High Street, Hanham | Coal Mine Stabilisation Works

We were appointed by BDP to provide specialist geotechnical and mining consultancy services for a proposed development at High Street, Hanham. Historical records identified the presence of former underground coal mining workings beneath the site, presenting a potential risk to the proposed development due to the possibility of ground instability and future settlement. 

Drawing on our extensive experience in mining-related ground engineering, we developed a detailed drilling and grouting specification tailored to the site’s specific geological and mining conditions.  

Throughout the remediation programme, we provided on-site supervision and technical oversight of the grouting works. This included monitoring drilling operations, reviewing grout data, assessing treatment effectiveness and ensuring that all activities were carried out in accordance with the agreed specification and industry best practice. 

Regular inspections and reviews ensured that any issues encountered during the treatment process were quickly identified and resolved.  

Upon completion of the works, we compiled a comprehensive validation report documenting the drilling and grouting activities, quality assurance procedures, monitoring records and treatment outcomes. The report demonstrated that the remediation objectives had been achieved and provided a clear audit trail for the project team.  

By delivering specialist design, supervision and validation services, we helped transform a site affected by historical mining constraints into a development -ready asset. Our involvement reduced ground-related risks, provided confidence in the site’s long-term stability and supported the successful progression of the scheme through the next stages of design and construction.