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Slope stabilisation

Advanced slope stabilisation techniques

Advanced slope stabilisation techniques are also known as slope protection or slope reinforcement. Slope stabilisation is a ground improvement measure that prevents or mitigates the erosion, instability or failure of natural or man-made slopes. 

There are many ways to carry out slope stabilisation, including retaining walls, gabion structures, ground anchors and rock bolts. The right slope stabilisation strategy will depend on a variety of factors, but Mainmark’s Teretek® resin injection is the answer for projects that require a highly effective solution that can be implemented quickly and with minimal disruption.

 

Our slope stabilisation methods:

  • Are non-invasive and can be implemented swiftly
  • Are environmentally inert
  • Improve soil cohesion
  • Enhance the ground’s load-bearing capacity
  • Reduce the risk of slope failure on hillsides, embankments, cliffs, road cuttings and construction sites
  • Create a stable soil mass that can last for decades, reducing long-term maintenance and repair costs
  • Help to protect people, buildings and infrastructure 

Mainmark’s ground engineering technologies use surgical precision and polymers, or cementitious grout, in a controlled process. The material fills voids, cracks and fissures to provide reliable slope stabilisation.

Why is slope stabilisation necessary?

The main point of slope stabilisation is to ensure a slope embankment, culvert or cutting has a sufficient factor of safety (FoS). The FoS quantifies the strength of a soil mass in comparison to the combined weight of the soil mass that makes up the slope and any additional superimposed loads. Commercial structures constructed on or near man-made or natural slopes may necessitate measures to ensure that the slope’s factor of safety is maintained at the specified level throughout the design life of the structure.

Slope stabilisation also aims to overcome common causes of slope failure. These can include:

  • Slopes that are too steep
  • Water movement and inadequate drainage
  • Soil composition
  • Erosion caused by flooding or drought
  • Fractures or cracks in the ground
  • Seismic activity
  • Heavy traffic
  • Excessive loading
  • Historic land use, such as mining

Mainmark’s slope stabilisation techniques deliver fast and precisely controlled outcomes that can be tailored to meet the unique requirements of each project. This flexibility includes variations to the strength and density of the filling materials as required. The result is a robust and dependable slope, ensuring long-term safety and stability.

Slope stabilisation technologies

Mainmark slope stabilisation technologies

Teretek® – Resin injection for slope stabilisation

Teretek® is an engineered solution for slope stabilisation that utilises a plural component, expanding polyurethane resin. The expansion force of the material results in the controlled lift of structures, with a by-product of localised bearing capacity improvement through soil densification.

Teretek® resin injection technology
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Mainmark technology benefits

Benefits of Mainmark’s treatments for slope stabilisationn

Fast

Our slope stabilisation solutions can be completed within a matter of days or hours.

Environmentally inert

We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.

Non-invasive

Slope stabilisation can be carried out without the need for excavation or extensive disruption.

Varied density choices

Material density can range from 30 to 1500 kg/m3

High strength

Our materials can achieve strengths of 50 kPa to more than 20 MPa.

Variable flow properties

With variable set times ranging from seconds to hours, materials can be precisely controlled and pumped over long distances.

Slope stabilisation FAQ’s
How do you stabilise unstable slopes?

Stabilisation of unstable slopes is traditionally achieved through measures like vegetation cover, retaining walls, geogrids, or soil nailing. Soil stabilisation methods range from natural to engineered and from simple to complex. Modern, fast and non-invasive methods available include Mainmark’s Teretek® geopolymer resin technology. Slope stabilisation with geopolymer resin injection technology brings numerous benefits over more traditional approaches:

  • efficiency
  • rapid application
  • minimally invasive 
  • environmentally friendly properties
What are the methods of slope stabilisation?

Traditional methods of slope stabilisation include vegetation cover, cut and fill solutions, retaining walls, drainage (shallow, deep and trench), geogrids in embankment, or soil nailing and rock and soil anchors. These techniques can be time intensive, laborious and in some instances, invasive. Mainmark focuses on advanced, non-invasive techniques.

Our approach with Teretek® geopolymer resin is a game-changer in slope stabilisation. It allows for a more controlled and precise application, making it suitable for a wide range of environments, including residential areas, commercial properties, and sensitive ecological zones.

How do you know if a slope is unstable?

Some common visual features of an unstable slope include the appearance of cracks and deformations on the slope face which are likely to worsen with time, changes in vegetation patterns, such as dead or leaning trees, the presence of weak or weathered rock layers, presence of faults or joints, excessive water and saturation of slope.

Slope stability analysis such as limit equilibrium analysis and finite element analysis can be utilised to assess the stability of slopes accurately  Mainmark’s in-house geotechnical team can undertake all such tasks and provide appropriate, value engineered solutions for slope stability problems.

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Step 3

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© 2024 The Mainmark group of companies. ‘Mainmark®’, ‘Terefil®’, ‘Terefirm®’ and ‘Teretek®’ are trademarks of the Mainmark group of companies.

Mainmark Ground Engineering (UK) Ltd.

CRN: 09372443

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