Underground Construction - April 2021 - 47

Project ravine

Top view of point cloud.png

hicles for mapping purposes, including energy sector
corridor monitoring (oil and gas, powerlines), construction planning and environmental restoration.
The company's detailed LiDAR imagery, for example, was used to generate " as built " conditions of
a steep ravine to aid in long-term monitoring of the
slopes under which a natural gas pipeline was buried.
Particularly concerning was a narrow road traversing the top of the ravine, through which the pipeline
was installed. Road instability could potentially result
in a long and deadly tumble of a vehicle to the
bottom of the ravine. In addition, loss of vegetation
along the buried pipeline's path makes the area
especially susceptible to slides after heavy rainfall.
RTL-400's high-resolution point cloud data of
the 13-acre ravine area was captured in 10 minutes
- a task that would have taken surveyors several
days to complete with far fewer reference points
provided for analysis. The resulting " as built " digital
elevation model (DEM) can be compared to future
DEMs to determine if any changes have occurred
in the slope's topology, helping to identify hazards
and provide input for slip mitigation.

Doosan Infracore
doosanequipment.com
Doosan Infracore North America has expanded
its excavator lineup with its largest model yet.

Vermeer Adds Roller Cone Hole Openers to HDD Tooling Line
Vermeer roller cone hole openers are available in diameters of 8 inches to 24 inches (20-61
centimeters) in 2-inch (5-centimeter) increments and with a range of customizable options.
Built for quality and performance, Vermeer roller cone hole openers feature cutters that are built
specifically for this application.
" The cutters are not rebuilt or recycled from Tricone pilot bits, " explained Jason Zylstra, Vermeer
lifecycle product manager, " The cutters also feature metal-faced seals similar in style to what you'd
find on a dozer or excavator, rather than conventional rubber seals. These seals add durability to
the cutters as they maximize the wear life in gritty conditions. "
They are also built with a precision machining manufacturing process that allows the tool to
have equal loading on each cutter.
" Combining two machined surfaces - the cutter and the body - gives the tool concentricity,
which maximizes the life of the tool by evenly distributing the wear, " said Zylstra.
With a wide range of sizes and centralizer options, as well as two different cutter options for hard
and medium hard rock and a multitude of customizable options, these roller cone hole openers
are equipped to meet the specific needs of any job site.
FOR MORE INFORMATION
Vermeer Corporation, (641) 628-3141, vermeer.com

DX800LC-7 is well-suited for heavy construction
and infrastructure work, excavating, stockpiling or
loading large amounts of material, as well as for
pit and quarry customers. The powerful machine
makes these tasks go much faster.
Emphasizing power, durability and reliability,
DX800LC-7's unique double-boom foot design
improves stress distribution to reduce single-side
wear and maintain machine uptime. It also allows
customers to more easily assemble or disassemble
the boom for transportation.
Three excavator arm options - standard, long
and mass-excavation - match the machine to the
job, so it doesn't waste power. All three configurations include a heavy-duty front design with
additional reinforcement on key stress points.
The exclusive D-ECOPOWER system helps to
improve productivity and save fuel. The hydraulic

system precisely controls oil flow and optimizes the
engine's available horsepower.

Farwest Corrosion Control
farwestcorrosion.com
Farwest Corrosion Control Company's new
Ref-Check VPR (voltage potential restoration) test
instrument takes accurate voltage potential or
structure-to-soil readings, despite conditions that
would otherwise produce inaccurate readings and
require the costly replacement of aging cathodic
protection reference electrodes (CPREs).
" While corrosion has been around as long as we
have been using steel to transfer water, gas and like
substances, the methods to measure and mitigate
corrosion levels have improved, " said Troy Rankin,
president of Farwest. " The Ref-Check VPR takes
this to a new level. " *
UCONonline.com | APRIL 2021

http://www.vermeer.com http://www.farwestcorrosion.com http://www.doosanequipment.com http://www.UCONonline.com

Underground Construction - April 2021

Table of Contents for the Digital Edition of Underground Construction - April 2021