TECCO® meshThe most economical dynamic surface support

High-tensile mesh with

chain-link structure for

underground applications

in rockburst conditions

– quick & easy to install.

2

2 kJ

TECCO® meshMade to withstand highest loads

TECCO® mesh as surface support in highly stressed rockburst

conditions or squeezing ground. Offers both an effi cient

installation and reliable protection with the most competitive

cost-performance ratio.

Dynamic energy capacity

Displacement [mm]

Loa

d [k

N]

2 kJ4 kJ

12 kJ

Results of quasi-static tests made by the Western

Australian School of Mines (WASM): TECCO® mesh with

a wire tensile strength of 1770 N/mm2 can carry much

higher static and dynamic loads than traditional

reinforcement nets (graph based on WASM results).

Fibrecrete 60 mm synt. fi bre, on 1.25 m x 1.25 m

Fibrecrete 110 mm steel fi bre and embedded weld mesh,on 1.25 m x 1.25 m

Fibrecrete 80 mm synt. fi bre, on 1.25 m x 1.25 m

Geobrugg

MINAX® M85/2.7

Geobrugg

TECCO® G80/4

Welded mesh 5.6 x 100 x 100

For high load capacity: Both static and

dynamic capacities (e.g. while blasting) are

higher compared to other surface support

Rhomboidal chain-link structure

For easy handling and storing: Manual and

mechanized installation by unrolling with any

mechanized technology.

Low weight

For fast installation: Very light relative to its

strength due to the high-tensile wire. This

makes manual or mechanical installation very

easy and improves the occupational health

and safety.

Knotted ends

For maximum stability at the edges: Profit

from minimized overlapping, optimized

number of rock bolts and no sharp edges.

Balanced stiffness

For perfect tunnel protection: Mesh flexibility

permits good surface contact and optimal mesh

tightening. Minimal deformations after rock-

burst events or blasting work.

3

Adapted from:

V. Louchnikov, S. Brown and R. Bucher, 2014.

Mechanized installation of high-tensile chain-link

mesh in underground operations.

Original article available on request.

Less overlap, increased bolt spacing, greater savings

Knotted ends at the edges of the mesh allow minimized overlapping on the rock surface. This leads to a

highly effective installation saving both mesh and time.

$(AUD)/kJ per m2 of surface support; per 3 m development cut

Total installation costs (AUD) for 1 kJ energy capacity

Corrosion protection

TECCO® mesh standard coating is SUPERCOATING®

(Zn/Al). For special conditions ULTRACOATING® is

provided to ensure longer working life.

Salt spray test

according DIN 50021-SS/ASTM B117/

EN ISO 9227

Expo

sure

in h

ours

unti

l th

e oc

curr

ence

of 5

% d

ark-

brow

n ru

st

GEOBRUGG ULTRACOATING®

GEOBRUGG SUPERCOATING®, alu-zinc

Hot-dip galvanized

• 20 % less mesh• Fewer bolts needed

3 m

11 m

1.5 m

1.5 m

TECCO® meshCross-section

example

• 4 sheets overlap• 7 more bolts used

Welded mesh

1.5 m

3 m

1.2 m

11 m

0

500

1000

600-1000 %longer

200-300 %longer

1500

2000

2500

3000

3500

3 m

3 m

[h]

Welded Mesh

Strap Mesh

Fibre Reinforced Shotcrete 80 mm

Fibre Reinforced Shotcrete +

Welded Mesh

MINAX® M85/2.7

High Energy Absorpti on Mesh

Mesh Reinforced Fibrecrete 110 mm

TECCO® G80/4

$ 0

$ 85

$ 74

$ 58

$ 57

$ 51

$ 51

$ 35

$ 19

$ 10 $ 20 $ 30 $ 40 $ 50 $ 60 $ 70 $ 80 $ 90

11 m

fi bre, on 1.25 m x 1.25 m

Fibrecrete 110 mm steel fi bre and embedded weld mesh,on 1.25 m x 1.25 m

fi bre, on 1.25 m x 1.25 m

A company of the BRUGG Group

ISO 9001 certifi ed

Geobrugg AG

Geohazard Solutions

Aachstrasse 11 • CH-8590 Romanshorn

Tel. +41 71 466 81 55 • Fax +41 71 466 81 50

www.geobrugg.com • info@geobrugg.com

5.1

05.0

3.E

N-C

H.1

503

At-a-glance Specifi cations and options of TECCO® mesh

Small deviations from mesh geometry and other modifications are subject to change without notice.

Technical Data

TECCO® G80/4

Mesh shape rhomboid

Mesh width 80 mm (+/- 3 %)

Diagonal 102 x 177 mm (+/- 3 %)

No. of meshes transversal 9.8 pcs/m

No. of meshes longitudinal 5.6 pcs/m

Steel wire

Wire diameter 4 mm

Total height of mesh three-dimensional 15 mm (+/- 1 mm)

Tensile strength of steel min. 1770 N/mm2

Material high-tensile steel wire

Tensile strength of a wire 22 kN

Load capacity

Punching load 300 x 300 mm plate 105 kN (according to WASM tests)

Tensile strength of mesh longitudinal 190 kN/m

Mesh rolls

Mesh edges mesh ends knotted

Roll width 1.5 m - 3.9 m

Roll length as per site requirement

Total surface per roll various

Weight per m2 2.6 kg/m2

Weight per mesh roll various

Corrosion protection

Composition GEOBRUGG SUPERCOATING® (95% Zn + 5% Al)

Coating weight 150 g/m2

MESHA® installation handler

For a fully mechanized installation of Geobrugg mesh

in one working process. The MESHA® can be retrofit-

ted to any development jumbo or bolting machine,

without losing a boom for drilling.

G-Plate

For optimal load transmission from the rock bolts to the

TECCO® mesh. The special spike plate grabs the mesh

in 6 positions and increases the load capacity, the load

transfer and the blasting resistance.

Optional connection T3 Clip

For a tool-less connection the T3 Clip connects the

mesh when necessary, ensuring 100 % load transfer.