Rockfall prevention system
Conduces to natural landscape restoration
Slope stabilization
Fast growing greenery

TOKYO ROPE MFG. CO., LTD.
TOKYO ROPE MFG. CO., LTD.
NIHONBASHI FRONT BLDG. 6-2 NIHONBASHI 3-CHOME CHUO-KU TOKYO 103-8306 JAPAN
Tel.: + 81 3 6366 7788, Fax: +81 3 3278 6870

The Representative office of Tokyo Rope MFG. CO.,LTD. in Moscow
22, Bolshaya Yakimanka str., Moscow, 119180, Russia
Tel.: + 7 495 645 04 03, Fax: +7 495 645 04 09

The Representative office of Tokyo Rope MFG. CO.,LTD. in Kazakhstan
Office No. VP-62,7th floor,Business center “Na Vodno-Zelyonom Bulvare”,
BLDG No. 12/1, D. Kunayev Street,Astana city, 010000, Republic of Kazakhstan
Tel.: + 7 7172 500 759, Fax:+ 7 7172 500 780

INTERNATIONAL INVESTORS Co. Ltd
Official Agent of Tokyo Rope MFG., CO. LTD in Kingdom of Saudi Arabia
Office 7 Dinaar Commercial Center, King Abdulaziz Road
PO Box 104451, Jeddah 21331, Saudi Arabia
Tel.: +966 12 236 5511, Fax:+ +966 12 236 5522
http://www.tokyorope.co.jp/english

TOKYO ROPE MFG. CO., LTD.
1511-AVNMIGHTY NET
Examples of completed projects using Mighty Net

Mighty Net prevents rockfalls, and efficiently conduces
to natural landscape restoration.
Mighty Net advantages

Mighty Net can be installed on any type of terrain and is widely used as a system thatprevents rockfalls. Furthermore, Mighty Net does not prevent fast growing of plants
and conduces to efficient greenery.
In the background of the photo below is - the view of the slope after 1 year of Mighty Net installation. Stabilized
slope conduces to the fast growing of plants and improves the scenery. In the foreground of the photo below is - theview of the slope soon after installation.

Stabilization of loose rock and random rocks lying on the slope surface
Thick netting bears against the slope, preventing loose rock from creeping, and efficiently
provides slope stabilization.
Ease of maintenance
Mighty Net firmly keeps rocks on a slope so that periodical removal of rocks rolled off to thetoe of slope is not required.
Efficient greenery
Thick netting firmly covers the slope, decreasing soft soil erosion and conduces to the fast
grow of plants, as soft soil and humus gathers in net meshes holding the roots and seeds ofplants.
Optimal method for different kinds of slopes
Mighty Net creates no difficulties for hydroseeding and can be used as reinforcement for
concrete and mortar.
Wide range of applications
Thanks to the ease of assembling, Mighty Net can be used for any type of the ground.

In the areas with frequent wind-caused rockfalls the application of the systems similar toMighty Net, can lead to gathering of rocks at the toe of a slope. As a result, a net under theload of rocks lowers and can block the traffic becoming an obstacle for transport. Because ofextensive loads, rocks must be removed out of the net. That is why the use of Might Net
system is an optimal solution for the slopes of loose rocks.

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MIGHTY NET
Examples of completed projects using Mighty Net

Examples of completed projects using Mighty Net

In course of time plants hide Mighty Net,
fully restoring a natural landscape.

Examples of completed projects using Mighty Net

Examples of completed projects using Mighty Net

Mighty Net basic elements, high-strength thick net and flexible wire rope,
follow the terrain features and stabilize slopes with uneven surfaces.

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MIGHTY NET
Examples of completed projects using Mighty Net

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MIGHTY NET
Examples of completed projects using Mighty Net

Mighty Net construction

Mighty Net types

Unit of measure: mmWire rope
Type2 x 2 – 30 x 3.2
2 x 2 – 50 x 3.2

Construction
Diameter3 x 7 φ12

Verticalinterval (b)2 (m)AnchorHorizontal Thick nettinginterval (h)2 (m)φ3.2 x 42x 30
φ3.2 x 46x 50

RockIn case of a rock rot at the area with steep slopes Mighty Net will
firmly cover the slope and prevent rockfalls.

Sub-anchor
Soil

Cement anchor
Pipe anchor
A, BA, B
D22(M20) x 1000 φ114.3 x 4.5 -1630

Cement anchor

RockSoil

Pin anchor
φ9 x 200
φ13 x 300

Pin anchor
φ13 x 500
Twisted anchors
6 x 500

Notice 1:

A type anchors are set at the net boundary
B type anchors are set inside the net
Notice 2: Sub-anchors of other sizes can be used depending on installation conditions.

Construction components

Unit of measurement: mmTypeRopegrip

Wire coil2 x 2 – 30 x 3.2

For φ12 - 800 (Cement anchor A )φ3.2 x 50 x 300

2 x 2 – 50 x 3.2

For φ12 - 975 (Pipe anchor A )φ3.2 x 70 x 300

Cross-shapedgrip

Cross-shapedanchor grip

Cross clip

50 x 95

50 x 95

4.5 x 42 x 42

The main component of a system thatprevents rockfalls is an anchor. The
cement capsule, used for its
installation, is manufactured understrict quality control. Thereby cement
anchor will be securely attached.

Anchor installation
TypeSettings procedure

Equipment andtools

Notes

Cement anchor
A, Bfor rocks

Plunge a cement capsule into water for 5 minutes, untill air
bubbles stop escaping. Place the cement capsule in a 900
mm hole, made by 40-44 diameter drill. Place a twistedanchor into the hole.

Compressor
BitRock-drill

Cement capsule (standard type)- φ36 x 600 - 2 pieces (per 1 anchor)- at least 24 hours till full hardening of
the construction

Pipe anchor
A, Bfor soilWith the help of puncher place a pipe anchor into a 1.5
meter hole.

Compressor
Puncher

Installation procedure

Mighty Net strength- Standard thickness of thick netting for an additional soil or mortar is 30 mm.
- Net thickness can be chosen depending on the thickness of additional soil or mortar.
- In case of difficulties, caused during the installation works, you can consult Tokyo Rope experts.
Type2 x 2 – 30 x 3.2
2 x 2 – 50 x 3.2

Load of falling rocks
kN/m2

kN*

12.50

50

11.25

45

10.00

40

8.75

35

7.50

30

6.25

25

5.00

20

Slope ratio (1:X)
1.0*Load, applied to a mesh area, generated by the wire ropes (b・h)

70.9

0.8

0.7

0.6

0.5

0.4

0.3

Stage 1Stage 2

Stage 3Thick netting is installed in theupper part of the slope and thenattached by pin anchors until
firm adherence is achieved.

Locating the place of anchors
installation

Vertical and horizontal wire
ropes are netted along the slope.

Notice: Depending on the installation conditions, stage 2 and stage 3 can be held in the beginning ofinstallation. Then a net installation follows.

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MIGHTY NET
Mighty Net construction

Mighty Net construction

Mighty Net standard design

Elements C & D

Wire coil

Element E
Vertical wire rope 3 x 7 (G/O) φ12

Vertical wire rope3 x 7(G/O) φ12

Cross-shaped anchor grip
50 x 95

Thick netting φ3.2 x 42 x 30

Pipe anchor B
φ114.3 x 4.5 x 1630 (1630)

Horizontal wire rope3 x 7 (G/O) φ12

Horizontal wire rope3 x 7 φ12

Cross clip φ3.2 x 60 x 60

Thick netting
φ3.2 x 42 x 30

Sub-anchor
Ropegrip φ12 - 800 for cement anchor A

Sub-anchor
φ9 x 200 (φ13 x 500)

Cement anchor B
D22 (M20) x 1000

Values for soil are given in brackets

Cement anchor A D22 (M20) x 1000

Ropegrip

F-F' view from above

Cross-shaped anchor grip
Vertical wire rope 3 x 7 φ12

Wire rope

Horizontal wire rope 3 x 7 φ12

Wire rope
diameter
φ12Type
For cement anchor A

φ12For pipe anchor A50

60
95

φ3.2 x 50 x 300 (φ3.2 x 70 x 300)

φ3.2 x 42 x 30 (φ3.2 x 46 x 50)

φ114.3 x 4.5

Graphical symbol

Element B

93.2 x 60 x 60

Cement anchor A D22 (M20) x 1000φ9(W3/8")

Vertical wire rope2 pieces/2 m

Thick netting

2 pieces/1 m2

Horizontal wire rope

50

Required amount of pin anchors

60

Twisted anchor

Cross-shaped anchor grip
Wire coil

Cross clip

Pin anchor

Cross-shaped grip
Cross clip

Wire rope φ12 x 3 x 750

Subanchor

Horizontal wire rope3 x 7 φ12

Vertical wire rope3 x 7 φ1295

Pipe anchor B (for soil)

Cross-shaped grip

Ropegrip (for cement anchor A ) φ12 - 800

Cement anchor B (for rocks)
Pipe anchor A (for soil)

φ9
φ1342 30°（46）Cement anchor A (for rocks)
Anchor6

3.2

Ropegrip for pipe anchor

Twisted anchor

2

Thick netting

Ropegrip (for A type cement anchor)

.2

φ3

φ3.

Detailed description of Mighty Net components

Horizontal rope

Pin anchor

30（50）

500

Pipe anchor A φ114.3 x 4.5 - 1630

200(300, 500)

Ropegrip (for pipe anchor A ) φ12 x 975

1630

Ropegrip (for pipe anchor A ) φ12 x 975

Pipe anchor A
φ114.3 x 4.5 - 1630

1500

Wire rope 3 x 7 (G/O) φ12300

Thick netting

50(70)

Wire rope 3 x 7 (G/O) φ12

Vertical rope

975

Wire coil

Element A

Component nameA
800

1 piece/1 m

M16

Required amount of wire coils
60

Vertical wire rope

1 piece/1 m

Thick netting

2 pieces/1 m

Horizontal wire rope2 pieces/1 m10