For the protection of rock slopes along existing roads and along roads under construction with regard to geotechnical conditions, the following is used:

Pocinčane heksagonalne čelične mreže - Octopus, Rijeka

This type of protection is applied when it is necessary to prevent small stones from falling on the road. Wire meshes of different characteristics are used for this type of protection.

Prior to laying the wire mesh, the slope will be cleaned of loose parts and loose stones, plants, bushes and trees with hand tools or machines, if necessary. The work is performed by employees specializing in work at height using specially adapted mountaineering equipment and techniques.

Galvanized hexagonal safety wire meshes in all respects according to the General Technical Requirements 2.15.9. or according to some other standard, are installed on 12 mm RA anchors, 50 cm long, which are placed on top of the slope.

The wire meshes are folded at the top of the slope and fixed to the anchors with a 12 mm diameter steel rope, and are connected vertically with special steel rings using appropriate pliers. At the bottom, the wire meshes are loaded with concrete weights or fixed with wedges and a steel rope. The width of the slope protection wire meshes is 3 m.

The works are performed in such a way that the wire meshes are raised from the level of the road to the top of the slope or are lowered from the top to the bottom.

Slope protection works are performed by installing shotcrete, installing self-drilling geotechnical or rod anchors made of ribbed reinforcement, load-bearing capacity and on a grid according to the geotechnical calculation.

Anchors are injected with a cement mixture from the bottom of the well to the top until the well is completely filled and tightened with a torque wrench or hydraulic equipment.
After the installation of the anchors, the protection with shotcrete and reinforcing wire mesh is performed in the manner defined in the project. In order to strain the slope and reduce the hydrostatic pressure, PVC pipe strainers Ø 50 - Ø 80 mm, 2 m long, are installed.

Geotekstili - Octopus Rijeka

For this type of slope protection, products made of PE, PVC and other natural or synthetic materials, resistant to atmospheric conditions, are used, which serve as a basis for greening and strengthening the slope, and for the purpose of protection against erosion. The procedure for installing protection on the slope is different for different types of materials, and depends on the substrate and slope. Geotextiles will be subsequently greened if necessary.

This type of protection is not provided in the General Technical Requirements, but has proven to be very successful on highways and other roads. It was adopted because it allows to reduce the use of shotcrete to a minimum. It is used to ensure the stability of slopes where there is a possibility of falling blocks that cannot be individually covered with anchors. Here, part of the blocks is secured directly by anchors, and part indirectly via wire meshes and steel cables.

Reinforced concrete grid construction is one of the geotechnical elements by which anchor forces are transferred from the surface of the slope to deeper solid layers.

Machine application of seeds, in addition to directly on the ground, can also be performed on three-dimensional eco-rings for greening the slope. The particles of the hydro-seeding mixture remain stuck in this structure, thus easily clinging to the substrate and creating a green cover on the slopes. Greening on the honeycomb structure is done in such a way that the cells are filled with soil material. The resulting substrate is suitable for wild plants or for planting and sowing various plant materials.

Slope protection works are performed by installing shotcrete, installing self-drilling geotechnical or rod anchors made of ribbed reinforcement, load-bearing capacity and on a grid according to the geotechnical calculation.

Anchors are injected with a cement mixture from the bottom of the well to the top until the well is completely filled and tightened with a torque wrench or hydraulic equipment.

After the installation of the anchors, the protection with shotcrete and reinforcing wire mesh is performed in the manner defined in the project. In order to strain the slope and reduce the hydrostatic pressure, PVC pipe strainers Ø 50 - Ø 80 mm, 2 m long, are installed.

Barijera protiv odrona - Octopus, Rijeka

Barriers against rock falls serve to prevent rock falls from higher heights that cannot be protected by classical protection with anchors and wire meshes.

Construction pit rehabilitation systems include:

Rehabilitation of tunnels from leachate and rock falls includes:

There are several factors that cause landslides. First, these are clay sediments in the composition of the terrain in which the slopes are formed. As a rule, the larger the clay layer, the greater the possibilities for landslide development, especially if the permeable layer on the slope is thinner.

Another factor is the alteration of permeable sandy and impermeable clay layers on the slope. An important factor is the increase in the amount of water and hydrostatic pressure in the sediments. Namely, sliding surfaces are always bonded to clay waterproof layers. Clay binds water to itself, swelling and multiplying its volume. This results in pressures that destabilize the permeable layers above the clay layers, which then begin to slide down the slope.

During the landslide rehabilitation works, the presence of experts is required to review the performed works, to consult the contractor and the supervising engineer, and for possible minor changes in the project documentation, according to the actual conditions on site.

The following is used for landslide rehabilitation:

Rehabilitation and construction of roads, maintenance and protection of highways, bridges, railways, overpasses, tunnels and other traffic facilities. It also includes preparatory works in construction, such as: excavations, embankments, levelling of the terrain, excavation of canals, removal of rocks and alike.

Regular maintenance includes activities that are continuously undertaken on the roads, in order to ensure the greatest possible degree of safety, adequate speed and comfort of road traffic. This maintenance of roads and traffic safety is the basis of our business.

Activities include road maintenance, maintenance of drainage, kerbs and slopes, and maintenance of facilities along roads. Here we use:

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