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Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

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Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

Looking Upstream - Installing the support ropes

Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

Looking downstream at the completed structure which is hardly visible

Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

Mid construction

Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

The contractor Rock Control installing the ring mesh

Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

Looking downstream at the completed structure

Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

The slash barrier was first filled in March 2022 and successfully contained a combitantion of slash and landslide material. The system was then cleaned out and filled again in January 2023

Селевые потоки и микросели - Hampton Forest Slash Barrier 2021

The system was cleaned out and filled again in January 2023. The barrier was cleared again in February 2023 and 2 - 3 days later was filled again. The barrier was over topped and remains intact.

 

Год установки

2021

Ситуация

The best management of slash material is at the source. However, even with the best practices, unforeseen extreme weather events can mobilise tree waste and debris into river channels which can cause significant damage to downstream assets. Historically in New Zealand forestry slash-catching barriers are built in-house with various combinations of rope, railway irons and recycled steel members which are then secured back to the bank with deadman anchors.  These structures are effective at stopping small volumes of slash material but risk catastrophic failure from overload subsequently releasing a large volume of material downstream at once. Rayonier Matariki Forests wanted to be proactive and set a new protection benchmark by installing a Geobrugg 1:1 tested and engineered solution, common in Europe but a first in NZ. Although designed for an extreme weather event, the intention is that the barrier is never significantly impacted through slash management at the source and then it can then be dismantled and used at another similar location.

Описание

A VX140-H4 was installed in the river channel near the boundary of the 800ha catchment. The barrier height and location were chosen to utilise the large upstream catchment area for log and debris accumulation. The location also has good access for future maintenance/clearing if required. The VX140-H4 System (140kN/m²) was selected to provide sufficient capacity for both the static and dynamic loads of debris and driftwood (slashing) events. Wire rope anchors were used to transfer the loads back into the ground and provide design redundancy should some bank erosion occur. Edge protection was also installed on the top rope to protect the structure in the event of overtopping.

Подрядчик

Rock Control

Защищаемый объект

Другое

Представитель в Вашем регионе

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Инженерная защита
Гидротехника
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / США Regional Manager Northeast

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Saleh Feidi
 

Saleh Feidi

Regional Manager California

Инженерная защита
Гидротехника
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / США Regional Manager California

Электронная почта

John Kalejta
 

John Kalejta

Regional Manager Central US

Инженерная защита
Гидротехника
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / США Regional Manager Central US

Электронная почта

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Инженерная защита
Гидротехника
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / США Regional Manager Southeast

Электронная почта

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Инженерная защита
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

Электронная почта

Tim Shevlin
 

Tim Shevlin

Sales Director

Инженерная защита
Geobrugg North America, LLC,Salem OR 97302 / США Sales Director

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