KGN

Introduction to Passive
Rock Anchor

Passive rock anchors are pre-installed, high-strength
steel tendons used to reinforce and stabilize soil or rock
structures. Unlike prestressed anchors, they remain
inactive until external forces, such as ground movement
or structural loads, engage them. These anchors provide
long-term reinforcement for slopes, retaining walls,
tunnels, and foundations, making them a cost-effective
solution for preventing displacement and erosion.

Key Characteristics of Passive
Rock Anchoring:

Self-Activating Support:

Automatically engages under external loads, providing reliable stability and structural reinforcement.

Durable & Low Maintenance:

Engineered for long-term performance with minimal upkeep, reducing repair and inspection needs.

Corrosion Protection:

Advanced protective coatings enhance durability, ensuring resistance to moisture, chemicals, and extreme conditions.

Design & Engineering of
Passive Rock Anchors

The prestress rock anchoring process follows a precise sequence to ensure structural stability and
durability. High-strength steel tendons are installed in drilled boreholes, tensioned, and bonded to the
surrounding rock. This method enhances load-bearing capacity, prevents structural displacement, and
provides long-term resistance against environmental forces.

Boreholes are drilled precisely to match the geological conditions and anchor requirements.

Reinforcement bars or tendons are positioned securely within the borehole for stability.

High-strength grout is injected to establish a firm bond between the anchor and surrounding material.

The anchor remains inactive until natural forces, such as ground shifts or structural loads, activate it.

Thorough inspection and long-term monitoring ensure reliability and sustained performance over time.

Design & Engineering of
Prestress Rock Anchors

Boreholes are drilled precisely to match the geological conditions and anchor requirements.

Reinforcement bars or tendons are positioned securely within the borehole for stability.

High-strength grout is injected to establish a firm bond between the anchor and surrounding material.

The anchor remains inactive until natural forces, such as ground shifts or structural loads, activate it.

Thorough inspection and long-term monitoring ensure reliability and sustained performance over time.

Advantages of Prestress
Rock Anchors

Passive rock anchors offer a reliable and cost-effective
solution for long-term ground stabilization. Designed to
engage only when needed, they provide high load
resistance, minimize maintenance, and ensure durability
in harsh conditions.

Applications of Passive
Rock Anchors

Underground Parking &
Basement Support

Pipeline & Utility
Infrastructure Stabilization

Wind Farm & Solar
Farm Foundations

Seawalls & Coastal
Protection Structures

Highway & Railway
Embankment Reinforcement

Applications of Passive
Rock Anchors

Underground Parking &
Basement Support

Pipeline & Utility Infrastructure
Stabilization

Wind Farm & Solar
Farm Foundations