GEOTECHNICAL

JGP has designed and managed numerous slope stabilisation works, each presenting their own complex geotechnical conditions and constraints. Our projects have ranged from coastal slopes, landslips, rock and soil cuttings, embankments and temporary works. The combination of geotechnical and civil engineers enable JGP to provide pragmatic and cost-effective slope stability solutions. Our highly experienced engineers utilise various stabilisation techniques, depending on the ground conditions encountered.

Projects

Slope Stabilisation & Ground Retention

JGP have a considerable portfolio of slope stabilisation schemes that encompass the full range of stabilisation techniques, such as:

  • Piled and anchored reinforced sprayed concrete retaining structures: ideal for use in difficult to access areas or marine environments as it forms a consistent concrete mass with high strength and very low permeability.
  • Contiguous piled and anchor embedded retaining walls: ideal for temporary works or where deep excavations are required with soils or unstable ground.
  • Soil nailing / rock anchors: a cost-effective method for stabilising slopes and constructing retaining walls during excavations and are easy to install on irregular faced slopes and in restricted spaces.
  • Grading and hydro-seeding: a cost-effective solution which usually involves re-grading the slope to a more stable angle and hydro-seeding to bind the soil surface and aid stability.
  • Reinforced soil structures: an ideal engineering solution for unstable natural slopes, landscaped slopes, engineered slopes or walls and sites with marginal foundation conditions or where there is a need to accommodate large settlements.  The ease and speed of construction offers significant cost advantages.
  • Gabion retaining walls: a flexible and free draining system, that is quick and easy to install and is ideal for slopes where drainage is important. 

Lynton and Lynmouth Railway

John Grimes Partnership were instructed to undertake an inspection of the slope after a landslide caused by heavy rain in December 2012 caused an obstruction to the railway line.

Following clearance and removal of the dangerous material, the slope was stabilised using soil nails and with a flexible mesh facing. The works were completed in early 2013 and the railway reopened.

Work began on the lift construction in 1887 and took less than three years to complete. The lift is now a listed monument and the buildings have been listed to Grade. The railway was opened on 7th April 1890 and has been in operation ever since – even during the two World Wars.

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Geotechnical Investigation & Design