Slope Stability

Slope Stabilisation Techniques

Soil Nailing for Slope Reinforcement

Soil nailing is a versatile and efficient slope stabilisation technique that is used to reinforce in-situ soils and improve stability in temporary and permanent applications. Soil nails allow steep slopes and excavations to stand safely and are ideal for embankment widening, re-profiling sloping sites and retaining wall remediation.

This technique offers a stable, cost-effective solution with minimal disruption and fast installation.

King Post Walls for Efficient Earth Retention

King post walls, also known as Berlin walls or soldier pile walls, offer a robust retaining system that is frequently used to support slopes and excavations. The method yields a strong, adaptable retaining wall.

King post walls are great for improving slope stability on projects where speed, versatility and efficient material use are essential.

Contiguous Pile Walls for Reliable Ground Support

Contiguous pile walls deliver reliable earth retention where groundwater ingress is not a concern. Using rotary bored or CFA techniques, the wall consists of reinforced piles which form a durable retaining structure suitable for a wide variety of soil conditions.

These walls are especially effective in urban or restricted access areas for both temporary and permanent works.

Sectors We Support

We deliver slope stabilisation solutions across a wide range of sectors where ground movement, embankment support, and safe excavation are critical. Our experience includes projects within:

  • Infrastructure – Stabilising cuttings, embankments, earthworks and retaining structures for highways, public realm developments and major civil engineering schemes.
  • Commercial – Supporting excavations and sloped sites to enable new builds, extensions and large-scale commercial developments
  • Residential – Providing safe, engineered solutions for sloped housing sites, garden retaining structures, and re-profiled development platforms.
  • Energy – Improving stability around substations, renewable sites, utility corridors and access routes.

Whether stabilising embankments, preparing re-profiled sites for development, or supporting excavations in busy urban areas, our team delivers a complete service backed by deep geotechnical expertise.

Expertise Driven by a Highly Skilled Team

Our engineers, project managers and geotechnical specialists bring extensive experience in designing and delivering slope stability solutions for complex ground conditions. Continuous professional development keeps our team at the forefront of modern slope stabilisation techniques, ensuring each project benefits from the latest designs, insights and innovations.

Collaboration drives our approach. We work closely with clients, designers and contractors to deliver safe, efficient and cost-effective systems that meet environmental constraints and project requirements.

Precision Delivery With Advanced Drilling & Piling Equipment

We invest heavily in advanced drilling rigs, soil nailing equipment, and piling machinery to ensure precision and reliability. Our fleet supports installation in challenging environments, enabling us to stabilise slopes with minimal disruption to surrounding infrastructure.

From high-capacity rigs for contiguous piling to compact equipment for soil nailing in steep embankments, our machinery is maintained to the highest standards to ensure safe, efficient delivery of projects.

Completed secant pile wall

Our Commitment to Sustainable Stabilisation

Sustainability sits at the heart of our slope stabilisation operations. At Aarsleff, we aim to minimise our environmental impact while delivering long-term solutions that enhance stability and protect the surrounding environment. Each project involves a detailed ecological assessment, helping us adopt low-impact construction methods and reduce waste wherever possible.

Additional Retaining and Earth Retention Solutions

In addition to soil nails, king post walls, and contiguous pile walls, we also offer:

Talk to Us About Your Project

Every site presents unique ground challenges, and our engineers are ready to help you address them with confidence. Contact us today to speak with a specialist and find the right stabilisation solution for your project.

A leading UK ground engineering specialist, focusing on multi-discipline excellence and value engineering. We design and deliver some of the UK’s largest ground engineering projects.

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Our vision is to bring confidence to those constructing the landscape of tomorrow .

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1947. Central Jutland, Denmark. Per Aarsleff borrowed 10,000 Danish Kroner from his father’s life insurance, bought an excavator, and founded Northern Europe’s leading contracting company.

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Our biggest asset, our team is composed of the leading experts in ground engineering. Working with collaboration and cohesion at the core of our business, we can guarantee a quick and founded answer to all your questions.

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We recruit and reward our people based on our ‘Step into the Blue’ company culture, where we embrace the core values of Life and Health, Trust, and Responsibility.

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We do everything to ensure our team and yours work safely on our sites. With our core value of Life & Health, we see safety as a cultural pillar.

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Our ISO accreditations are an assurance to you that we take governance seriously. Read our policies to discover more.

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The projects that keep society running. Bridges, buildings, transit and rail facilities, embankment support, marine and offshore facilities, mines, airports, and water projects.

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Keeping things turning. Sewage Treatment Works, Waste Water Treatment Works, Wind Farms and Wind Turbines, Biomass Plants, and Power stations.

Aarsleff's Junttan PM 20HLC piling rig in operation with two workers present. Another piling rig can be seen in the background.

Meeting society’s needs. Nursing and care homes, MOD buildings, Schools and Universities, and small or large-sized residential developments.

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Staying on the move. Remediation, bridges, and foundation work are integral to keeping the industry running smoothly.

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The landscape of the marketplace. Mega-retail sheds, distribution warehouses, University accommodation, and major supermarket and household name units.

Commercial piling projects

Keeping things afloat. Ports and harbours, coastal defences, river embankments and inland waterways.

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Supporting culture and learning with specialist piling and ground engineering. From museums and libraries to heritage sites and institutional buildings.

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