Slope protection

Slope and rockfall protection on the location Banska vrata in Rijeka

September 29, 2022

Rockfall, of smaller or larger scope, is a frequent occurrence along Croatian roads, especially in mountainous areas. In January 2020, a rockfall occurred near the Banska Vrata tunnel in Rijeka. Unstable blocks weighing up to several tons fell on the road and it was closed for traffic for a while. In order to ensure safe […]

Slope and rockfall protection – the ZVIR complex

September 10, 2021

Works on the slope and rockfall protection at the Zvir Complex in Rijeka have been completed. For this project we have carried out engineering geological and geotechnical investigation and testing and made the detailed slope and rockfall protection design. The supervision of protection works we performed included the analysis and verification of the situation in […]

Rockfall and slope protection on state road D66, section 003, from km 15+000 to km 23+000

May 28, 2020

Works on rockfall and slope protection on state road D66, section 003, from km 15+000 to km 23+000 are completed. We have carried out the engineering geological and geotechnical exploration and investigation works and made the main and detailed rockfall and slope protection design. In addition, we have carried out the engineering supervision which included […]

Rockfall and slope remediation on county road ŽC5031, section Čabar-Mandli (6 locations)

September 12, 2019

Rockfall and slope remediation on county road ŽC5031, section Čabar-Mandli (6 locations) is currently underway. We have carried out engineering geological and geotechnical prospecting and made the main and the detailed rock slope protection design. The ŽC5031 section in question extends from the town of Čabar in the north to the village of Mandli in […]

Engineering geological mapping of the slope

May 23, 2019

Small- and large-scale rockfalls are frequent on the roads in the Republic of Croatia, especially in mountainous areas and along the Adriatic Highway. Rockfalls pose a great danger in these areas because of their vast diversity of lithostratigraphic soil composition, high levels of tectonic and seismic activity, complex geological characteristics, diverse relief features, adverse climatic […]

Testing of ground anchors

March 28, 2019

Ground anchor is a bearing element used to transfer the forces from the structure to the soil or rock mass. Early use of anchors included the application of rock bolts in Poland in 1918 and later in Czechoslovakia in 1926. Anchors were first introduced into civil engineering in 1934 by the French engineer André Coyne […]

Using unmanned aircraft systems and 3D models for designing slope remediation projects

January 31, 2019

The demand for faster design and construction work, especially in transport infrastructure and infrastructure projects, has led to the need for faster and more accurate field recording and data processing methods. One of the newer technologies used in the last fifteen years is point cloud technology. This is a set of points of known spatial […]

Block toppling

January 24, 2019

Block toppling represents one of the most common types of instability, specifically structurally conditioned failure within the rock mass. Toppling occurs on slopes in rock masses where the strata dip steeply away from the slope, striking parallel or sub-parallel to it. In toppling, rotation of unstable blocks in overhangs occurs due to failure at the […]

Rockfall remediation – Hrvatska Kostajnica

December 6, 2018

Hrvatska Kostajnica is located on the very south-eastern edge of central Croatia, on the border with Bosnia and Herzegovina. The town is located in the river Una valley, at the eastern foot of Zrinska gora and is surrounded by foothills in the west and north. Hrvatska Kostajnica is Croatian town whose name is first mentioned […]

Protective mesh

November 15, 2018

Rockfall is one of the most dangerous types of instability in the rock mass. Since this phenomenon is common in mountainous areas, suitable geotechnical interventions for existing infrastructure protection (roads, railways, etc.) are needed. One of the most favourable methods of rock slope protection in such cases is the application of a protective mesh. Basic […]

Protection of rock slope cut 51 Lokve on the Zagreb-Rijeka railway line

November 8, 2018

The protection of rock slope cut 51 on the railway line M202 Zagreb GK – Rijeka (near the Lokve railway station) has just been completed. The works lasted from April to October 2018. The protection of the rock slope was carried out because of the rockfall danger on the track and other infrastructure elements. The […]

Rockfall barriers

July 11, 2018

About rockfalls In mountain regions, infrastructure falicities and settlements are commonly to rockfall hazards. Transportation infrastructure, such as roads or railways, often has to pass through potentially hazardous mountain areas where it is possible to rockfall. Rockfall is defined as a free falling rock which is detached from rock mass and is moving downwards while […]

Protection of the rock slope on the part of state road D501, between Hreljin and Križišće

June 14, 2018

Protection of the rock slope Geotechnical works on protection of slopes on parts of state road D501, between Hreljin and Križišće are in progress. For these parts of state road D501 we have already carried out exploration works and made the main design and detailed design. State road D501 was conduct with cutting in natural […]

What are self drilling anchors?

June 7, 2018

Self drilling anchors Self drilling anchors are special type of rod anchors. Self-drilling anchor consists of a sacrificial drill bit, hollow steel bar of the appropriate outer and inner diameter and coupling nuts. The anchor body is made of a hollow steel tube with an outer round thread. Steel tube has the sacrificial drill bit […]

Rockfall protection – influence tunnel area Brzet

March 9, 2018

Rockfall protection Rockfalls are usually initiated by natural forces, such as weather processes, erosion, heavy rains or earthquakes. Strong winds or storms can lead to falling of trees and vegetation that can cause rockfalls. Tree roots, their spreading and search for water-enriched micro-locations can also cause cracking of rock masses along the discontinuities and […]

Tunnel Kupjak remediation

November 17, 2017

Tunnel remediation We remember one of our interesting projects on the Kupjak tunnel, which is located on the railway M202 Zagreb GK – Rijeka. The town of Kupjak was named after the nearby Kupjak peak under which is the source of the Kupica spring, and it is interesting that there are four places of […]