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Böschungsstabilisierung - Via Gellia, Derbyshire 2017

Rope Access vegetation clearence prior to drilling works beginning

Böschungsstabilisierung - Via Gellia, Derbyshire 2017

Showing the large loose block being stabilised by Spider® S3-130

Böschungsstabilisierung - Via Gellia, Derbyshire 2017

Looking West at the loose block stabilised by Spider® S3-130

Böschungsstabilisierung - Via Gellia, Derbyshire 2017

Image showing the DELTAX® G80/2 mesh with underlayed Spider® S3-130 at lower right edge

Böschungsstabilisierung - Via Gellia, Derbyshire 2017

DELTAX® G80-2 over full height of slope

Böschungsstabilisierung - Via Gellia, Derbyshire 2017

DELTAX® G80/2 drape

 

Installationsjahr

2017

Ausgangslage

During routine maintenance of the rock slope it was noted that a large block was very close to failure. AECOM undertook the geological mapping and survey.

Massnahme

AECOM designed a DELTAX® drape to 90 % of the slope to control the weathering and failure of the rock slope. The large block is a different issue and SPIDER® S3-130 was specified to hold the large block in place. The site was cleared of vegetation, any large trees were treated with eco plugs to kill off the growth of the stump.

Using DTH (down the hole hammer) drilling methods working from top down 3 metres deep GEWI 25 bar was installed. The upper 3 rows of bolts were installed with resin grout, the lower rows were grouted with OPC water mix.

The SPIDER® S3-130 mesh was installed first and secured at all edges with 14 mm wire rope and P33 system spike plates. 

Once all the bolts had been installed the DELTAX® G80/2 mesh was installed from top down over the full site including over the top of the SPIDER® S3-130 mesh. This was profiled in place with P33 system spike plates.

12 mm boundary rope was installed and tensioned to the rockface on all edges. This 12 mm rope was secured to the DELTAX® G80/2 mesh with T2 compression claws.

The road was reopened to public use just 11 days after closure. A total of 946 m² of DELTAX® G80/2 and 235 m² of SPIDER® S3-130 were installed with 44 number 3 meters long GEWI 25 bars.

Kunde

Derbyshire County Council

Ausführende Firma

CAN Geotechnical

Geschützte Objekte

Strasse, Steinbruch / Bergbau

Korrosionsschutz

GEOBRUGG SUPERCOATING, GEOBRUGG ULTRACOATING

Planer

AECOM Chesterfield Office

Ansprechpartner

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Schweiz Country Manager Ost- und Zentralschweiz, Liechtenstein

E-Mail

René Müller
   

René Müller

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

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Geobrugg AG,Industriestrasse 21,5200 Brugg / Schweiz Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

E-Mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Naturgefahren
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Schweiz Project Manager Inspection Services

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Naturgefahren
Uferschutz/Wasserbau
Minen / Bergbau / Tunnel
Geobrugg AG,Stabile Cometal, via Pizzante 7,6595 Riazzino / Schweiz Ticino Country Manager

E-Mail