Minova MAI Self Drilling Systems

katalogueMinova MAI GmbH offers a wide range of high- performance ground support and consolidation products and services as well as an extensive range of geotechnical solutions for applications in ground engineering, tunneling, mining and rehabilitation. Our know-how is the result of more than 40 years of experience in the production and global supply of geotechnical products and services, providing customized support tailored to meet the needs of our clients. The production facility of Minova MAI GmbH in Austria meets the highest industrial standards and is certi ed according to ISO 9001, 14001 and 18001.

The Minova MAI Self Drilling System can be used as Self Drilling Soil and Rock Nails (SRN) or as Self Drilling Micropiles (MIP). They offer unique reinforcement solutions for unstable ground conditions such as sand, gravel, silt, clay and light to medium fractured rock. For projects facing such ground conditions, Minova MAI Self Drilling Systems provide the most ef cient and effective reinforcement solution.

Minova MAI Self Drilling Soil and Rock Nail SRN

Minova MAI Self Drilling Soil and Rock Nails consist of a fully threaded self-drilling hollow bar as the load bearing element encapsulated by a grout body.

In surface applications, soil and rock nailing is used to stabilize natural or arti cial slopes or to support construction elements such as retaining walls.

In underground applications the main areas of application include:

  • Forepoling
  • Spiling
  • Face bolting
  • Radial bolting

In both cases the technique involves the insertion of reinforcing elements such as MAI Self Drilling Systems. Soil and rock nails are typically grouted along their entire length.

In addition, to further support the surface of the slope or rock, various support systems such as exible reinforcing mesh or geotextiles may be installed on the surface held in place by the head plates.

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Minova MAI Self Drilling Micropile MIP

Micropiles are small diameter piles (typically less than 300 mm) transferring compression, tension or alternating loads to the surrounding ground.

Minova MAI Self Drilling Micropiles consist of a fully threaded self-drilling hollow bar as the load bearing element encapsulated by a grout body. Depending on the ground conditions, MAI Self Drilling Micropiles are designed either as end-bearing or friction piles.

The main areas of application include:

  • Foundations of new structures
  • Underpinning existing structures
  • Minimizing settlement
  • Buoyancy control to compensate for the uplift forces acting on submerged structures

Minova MAI Self Drilling Micropiles are typically installed by means of a self-drilling process using cement grout as a ushing medium. Especially in cohesionless or unstable soil conditions such as sand, clay or gravel, this method is the fastest and the most ef cient way of installing a piling system. Compared to other alternatives, smaller drilling equipment can be used. This makes it ideally suited for projects with limited access or sites in congested areas or with restricted headroom conditions.

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