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 - Karaj Hafez Square 2017

Barriers installed and protecting the road from future rockfall events

 - Karaj Hafez Square 2017

Google earth location of the square and road that needed protection

 - Karaj Hafez Square 2017

Hafez square and potential rock fall zones

 - Karaj Hafez Square 2017

Example of a rockfall event before any barrier was installed

 - Karaj Hafez Square 2017

Site engineers and Geobrugg specialists discussing site stake-out plans

 - Karaj Hafez Square 2017

Drilling on the slope is performed using a mobile crane

 - Karaj Hafez Square 2017

Drilling the anchors from the basket

 - Karaj Hafez Square 2017

Lower weights of barriers help quicker installation

 - Karaj Hafez Square 2017

Mobile crane lifting the pre-assembled post for placement on the slope.

 - Karaj Hafez Square 2017

Barriers are installed in three separate lines. Each line is installed with the nets pre-assembled to the post.

 - Karaj Hafez Square 2017

Pre-assembled posts are installed over the first berm

 - Karaj Hafez Square 2017

Pre-assembled components, e.g. nets supplied pre-installed on the posts, speed up the installation process

 - Karaj Hafez Square 2017

Adjusting the barriers with up-slope ropes and the secondary mesh

 - Karaj Hafez Square 2017

Installed barriers on the slope protecting the area of Hafez Square

 - Karaj Hafez Square 2017

Installed barrier protecting the road against rockfall

 - Karaj Hafez Square 2017

Installed barriers in three GBE-2000 lines: 1) 200 meters 2) 220 meters 3) 220 meters, totaling 640 meters

 

システム

 

システム延長

200 m - 220 m

 

設置年

2017

状況

Karaj, a growing city, has roots in Alborz mountains and therefore is faced with challenges such as rockfall which are not typical for cities in Iran. Hafez Square which is a corridor to the city as well as to a major transit road to North of Iran (Chalous Road) is located in the mountain area. As a corridor, it is a major stop to public transportation and private cars. Many tourists also start their travel plans to the Caspian sea from this square. Over the years, weathering of the rocks in the mountain have been rising and consequently, rockfalls have happened on the road. Due to cars and buses stopping in this major square, there have been incidents of rockfall damaging properties and unfortunately, in some cases, fatalities have occurred. The Karaj municipality had to find a solution in order to stop the events from happening. The consultant got involved and performed geotechnical studies as well as rockfall simulations in order to find an optimal solution.

説明

The consultant got involved with the project and asked Geotech to provide its expertise for this phase. Based on prior rockfall incidents, the current topography of the slope, and scanning of boulders in different areas, design boulder was chosen. The rough area to be protected was 700 meters and after final analysis, it was divided into three barrier lines totaling 640 meters. An energy classification of 2000 kJ and a barrier height of 5 meters were selected. Thie installation was performed in two phases - in a total time of 9 months for the entire area. Grouting of the anchors was a challenge due to the cold weather conditions in the winter time but with proper planning, the entire project was finished ahead of schedule.

顧客名

Karaj Municipality

落札者

Geotech Company

保護対象

道路

腐食防止

ジェオブルッグ スーパーコーティング

エンジニアリング

Rahab Consulting Engineers

担当者の連絡先

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

自然災害防護
Hydraulic Engineering
鉱山/トンネル
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / スイス Country Manager Ost- und Zentralschweiz, Liechtenstein

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René Müller
   

René Müller

Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

自然災害防護
Hydraulic Engineering
鉱山/トンネル
Geobrugg AG,Industriestrasse 21,5200 Brugg / スイス Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

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Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

自然災害防護
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / スイス Project Manager Inspection Services

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Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

自然災害防護
Hydraulic Engineering
鉱山/トンネル
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / スイス Ticino Country Manager

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