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Kayıt ol
A company of the BRUGG Group
Amerika Birleşik Devletleri
Wookey Hole Catch Net 2015 - Geobrugg Wookey Hole Catch Net 2015 - Geobrugg
Wookey Hole Catch Net 2015 - Geobrugg Wookey Hole Catch Net 2015 - Geobrugg
Wookey Hole Catch Net 2015 - Geobrugg Wookey Hole Catch Net 2015 - Geobrugg
Wookey Hole Catch Net 2015 - Geobrugg Wookey Hole Catch Net 2015 - Geobrugg
Wookey Hole Catch Net 2015 - Geobrugg Wookey Hole Catch Net 2015 - Geobrugg

Wookey Hole Catch Net

 
Yer
Wookey Hole Caves, Somerest
Ülke / Bölge
Birleşik Krallık
Kurulum Yılı
2015
Müşteri
Wookey Hole Caves
Mühendislik
Frederick Sherrell Ltd Consulting Engineers
Sistemler
ROCCO®
Enerji emme kapasitesi
500 kJ
Sistem boyu
3.0 m, 7.0 m
Sistem uzunluğu
6 m - 15 m
Durum

Frederick Sherrell Ltd Consulting Engineers approached us to ask, “is it possible to create a horizontal catch net to catch and hold a potentially unstable 10 ton boulder?” The client is Wookey Hole Show caves, they were planning to bore a tunnel from an existing cave to a cave that previously was only accessible to divers. There was a small risk that the vibration from the works could dislodge a 10 ton block in the roof of the currently accessible cave.

To carry out the works all tools, equipment, anchors and all components of the catch net had to be carried into the cave system by hand. A specialty rope access contractor with extensive experience in caves was engaged to assist with installation of the upper and lower access ropes. They first had install bolts for the rope access, before installing the anchors and the catch net. The anchors had to be drilled and installed using hand held equipment so the anchors had to be short enough for easy handling. To add to the complication of using short anchors the bedrock in the cave is a Dolomitic Conglomerate with a mean strength of only 35-40MN/m2. Following pull out tests we discovered that we would be required to design for a max load of 40kN per anchor.

Açıklama

Geobrugg engineers designed a solution using our ROCCO 12/3/350 ring net to catch the block. Given the requirement to hand-carry and manually winch the net to the roof, we customized the ring net panels to allow for easy maneuverability and easy installation based on the location of the ropes. To take load from any impact Geobrugg installed five transmission ropes across the width of the cave. Geobrugg installed a U300 brake at each end of the ropes. Perimeter ropes were installed to give shape to the net.

Collaborating with the designers at Frederick Sherrell we designed a novel solution for installing suitably safe anchors given the weakness of the rock. In total 14 sets of anchors were installed. The anchors were paired together using wire rope. Two pairs were then attached to the U300 brake at each anchor point.

Upon project completion the contractor commented that the system drawings were clear, Geobrugg's engineer was accessible if there were questions, and the installation was extremely straightforward and far less complicated and time consuming than he had expected. He was impressed with this level of service and drawings that were provided for a custom designed product.

Yerel yetkiliniz

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Telefon +1 860 377 3230

İletişim formu

Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Telefon +1 909 706 8964

İletişim formu

John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Telefon +1 505 220 1404

İletişim formu

Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Telefon +1 336 337 0945

İletişim formu

Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Telefon +1 505 771 4080
Mobil +1 505 400 0796

İletişim formu

Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Telefon +1 503 423 7258

İletişim formu