Stati Uniti
Stati Uniti

myGeobrugg

Rocky Mountain National Park Grand Ditch Slope Repair

Consolidamento di versanti - Rocky Mountain National Park Grand Ditch Slope Repair 2016

Rocky Mountain National Park, Colorado Slope Stabilization, Grand Ditch Breach, Slope Failure repair

Consolidamento di versanti - Rocky Mountain National Park Grand Ditch Slope Repair 2016

National Park Services

 
 

Anno di installazione

2016

Situazione iniziale


On May 30, 2003, the Grand Ditch, a water-diversion canal in the northwest corner of Rocky Mountain National Park breached its bank due to a suspected rockslide into the ditch. At the time of the event, estimated flow from the ditch was 260 cubic feet per minute.

The breach saturated an adjacent slope which gave way, sending a massive (48,000 cubic yards) mud- and rock-slide down into Lulu Creek and the headwaters of the Colorado River. Approximately 22 acres and 1.5 miles of stream, riparian, upland, and wetland habitat were damaged.

Rocky Mountain National Park personnel and a team of cooperating researchers evaluated the extent of the damage and determined the desired future conditions for the impacted area.

Restoration needed to address many concerns in this rugged and remote area. These concerns included short-and-long-term potential impacts to wilderness character; geological resources; geological hazards; surface and groundwater hydrology; stream channel, floodplain and wetland morphology, and function; water quality; riparian and wetland communities; species of special concern (plants and animals); wildlife habitat and visitor experience.

An Environmental Impact Statement (EIS) was prepared. The results included recommendations for stabilizing the steep, unstable slopes with an engineered solution that would address both the geotechnical and ecological concerns.

Geologia

Clayey sand with rock fragments (0- 10'), underlain with decomposed rhyolite (10' - 15') and rhyolite with interbedded clay and clayey sand lenses (15' - 50').

Descrizione

To comply with the EIS recommendations and to address the objectives of the project, approximately 85,000 square feet of Anchored TECCO G65/3mm was specified for the project.

As this is an exposed slope and is visible across a large valley, a colored powder coating was applied to the TECCO® System to match the color of the surrounding slope, rendering the TECCO® System virtually invisible.  

The Park Service intends on allowing the slope to revegetate naturally, which may take some time due to the elevation (10,000 ft), and the slow growth of the natural vegetation. However, seeds of the natural vegetation were gathered by the Park Service in the event reseeding may be required.

Due to the remote location and the short construction season, availability of materials, powder coating, and delivery were of major concern to the contractor and project owner. The TECCO® System and associated components were easily delivered in a timely manner to meet the construction schedule.  

Approximately 500 grouted anchors were drilled and the TECCO® System was placed to stabilize the slope and prevent further raveling of rock.

The project was conducted and completed in the spring / summer of 2016.

Cliente

US National Park Service

Oggetto protetto

Infrastrutture turistiche

Protezione dalla corrosione

GEOBRUGG ULTRACOATING

Progettazione:

US National Park Service

Altre società partecipanti

Midwest Rockfall

Il contatto locale

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Stati Uniti Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Stati Uniti Regional Manager California

E-mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Stati Uniti Regional Manager Central US

E-mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Stati Uniti Regional Manager Southeast

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,Salem OR 97302 / Stati Uniti Sales Director

E-mail