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surface stabilization and vegetation stabilizzazione e inderbimento di terrapieno estabilizacion y vegetacion de un talud
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Surface stabilisation and vegetation of 35 m long berm at entrance to the Aquatic Centre for 2000 Olympic Games, Sydney, Australia

 

 

 

 

 

 

 

 

Full embankment covered with TENAX TENWEB during geocells filling operation

Full embankment covered with TENAX TENWEB during geocells filling operation

 

PRODUCTS:

TENAX TENWEB 3/300 geocells

 

Location:

Olympic 2000 complex, Sydney

Owner:

Civil & Civic

Project:

Belt Collins Australia Landscape Architects

Contractor:

Paramount Landscape

 

 

Problem
The entrance to the aquatic center, designed for the swimming and diving competitions at the year 2000 Olympic Games in Sydney Australia, is an impressive tunnel entry under a large berm.
The berm itself is both a structural and architectural feature of the entrance and as such required detailed attention as to the finished aesthetics.

The embankment was constructed with compacted shale reinforced with geogrids to satisfy the structural requirements, thus the challenge was to accomodate and stabilize a topsoil face on both sides to facilitate landscaping and therefore fulfill the aesthetic requirements.


Solution
The TENAX TENWEB 3/300 geocells were selected based upon performance and cost criteria. Performance data was developed by conducting field trials tests simulating high rainfall intensity and run off velocities.

Significant design input from TENAX engineers led to a satisfactory installation technique including specification of pin type and spacing to compensate for lack of anchor trenches due to slope geometry and a slope length in excess of 35 m.

Where the slope length was greater than 10 m (ie. one panel length) the panels were stapled (ie. each cell) end to end to enable rapid installation by way of pulling the top panel up the berm face with the other one following.

Once the panels were in place and the perimeter pegged, the internal cells were pegged utilizing 12 mm galvanised steel fixing pins.

A total quantity of 9000 m2 TENAX TENWEB 3/300 geocells were utilized. Due to space constraints at top of berm, all soil filling operations were undertaken from the bottom. The upper portions of slope required the utilization of a crane and kibble to facilitate filling.

 

Embankment adjacent to the access tunnel

Embankment adjacent to the access tunnel to the Homebush Bay Aquatic Centre

 

geocells filling using backhoe excavator

Geocells filling using backhoe excavator

 

Geocells filled with soil and covered with geojute to facilitate seeds germination

Geocells filled with soil and covered with geojute to facilitate seeds germination

 

 

Conclusions
The successfull installation and subsequent performances proved the TENAX TENWEB system to be the most effective method of stabilizing and revegetating the arid slope.

The installation furthermore set new benchmarks in respect of maximum slope length of 35 m without the utilization of anchor trenches.

 

 

 

 

 

Applications:

Slopes with arid and rocky matrix

 

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