ZEB1 Mobile Hand-Held Laser Scanner for Mining Applications

Presenter: Henno Morkel – Laser Scanning Specialist

ZEB1 – Hand-held Mobile Mapping System

Data Capture

ZEB1 Top View

90°

Blin

d S

po

t

ZEB1 Side View

Data capture with ZEB1

Copy data to PC

Upload to Server

Process to 3D points

Download to PC

These steps all managed by GeoSLAM PC application

Features:

Data managementCreate master user profileCreate standard user profileManage user profilesPurchase creditsReport on usage and credits

ZEB1 - Work Flow (Part 1: 3D Points)

GeoSLAM Uploader App

• Upload the RAW scanned data onto the processing server:

Available processing credits

Upload RAW scan data; then download processed data

Geo-reference

Clean points

3D Mesh

Fill holes

Create profiles

Using “pole” targets

3D R

esh

aper

so

ftw

are

Delete people, vehiclesRemove noise and outliers

Sub-sample points to 0.01m

Try to avoid large holes during data capture

Export to DXF

ZEB1 Work Flow (Part 2: Final Result)

Geo-referencing RAW scan data to control

Intersection of pole and

roof is control point

Hang short pole

from roof peg

Sphere picked up

in scan data

Data Processing Calculation

Board-and-pillar underground coal mine example -Scanning time 13 min - Processing time 13 min

Mining Applications

• Underground Mine Mapping: Mapping areas without previous (or outdated) survey information

• Precise Offsetting - Rapidly scan a big area for measuring your offsets

• Roof support bolts inspection - Inspect the layout and locations of your underground roof supporting bolts

• Accurate monthly mining advance volume calculations - By creating a triangulated solid mesh from the point cloud generated one can quickly

calculate your monthly advance volumes

Mining Applications (cont.)

• Clash detection - By utilizing the 3D model of a tunnel section one can determine in a new haulage truck or infrastructure will fit into or through certain areas in the mine

• Overbreak & Underbreak analysis - Do proper evaluation of your tunneling by the drill and blast method

• Change monitoring: scanning the same area in different epochs to detect and quantify changes

• As-built vs. Mine plans - Compare proposed mine plans with actual underground scan data to accurately understand the progress and efficiency of your mining operation.

Mining Applications (cont.)

• Restricted area mapping: use of the ZEB1 along a remote vehicle to safely scan in areas of difficult access (ZEB+ZEBRA combo)

• Incident recording: use to record all details surrounding an incident scene

• Advance tracking: to quantify advances in underground tunnels

• Volume calculation: measure stockpile volumes and other materials

Precise Offsetting

Roof bolts Support Inspection

Roof bolts Support Inspection (cont.)

Monthly Mining Advance Volumes

Clash detection

Overbreak & Underbreak Analysis

As-built vs. Mine Plans

2D

3D

ZEB1 - Scanning Examples – Underground tunnels

Cross-Sections

3D Mesh

ZEB1 - Scanning Example-Sections

ZEB1 - Scanning Example – Stockpile scan

ZEB Data Works With

ZEB Data Works With

Best Practice Guidance

SurveyENCLOSED

environments

SurveyFEATURE-RICHenvironments

SurveyEXTERNAL

environments

PerformCONTINGENCY

PLANNING

ConductREAL ESTATEVALUATIONS

ConductSTOCK PILEANALYSIS

SurveyWIDE-OPEN

environments

SurveyMULTI-LEVELEnvironments

SurveyFEATURE-LESSenvironments

SurveyUNDERGROUND

MINES

SurveyBUILDINGS for

SKETCH DESIGN

REDUCE COSTof survey

ELIMINATEsoftware

PURCHASE costs

REDUCE TIMEon-site

SurveyFOR LONGERthan 30 mins.

SurveyBUILDINGS forDETAIL DESIGN

SurveyFORESTS

Obtain dimensions forFABRICATINGSTEELWORK

CRIME SCENERECORDING

SurveyTO ACHIEVE

+/- 1mm

ZEB1 Users

ZEB1 Shaft ScanningCase Study at Kiruna Mine, Sweden with ÅF Consult

The Challenge:

ZEBRA Components for Shaft Scanning

ZEB1 Scanning Head

ZEBRA Nodding Actuator

ZEB1 Data Logger

Winch to lower down shaft

Nodding Movement

350m deep shaft

View Down Shaft

View from Top – showing scan head trajectory

ZEB1 Survey Process

• Lower ZEB1 down shaft and raise back up.

– 30 mins

• Upload for automatic processing.

– 30 mins processing

• Data available for analysis.

– Immediate review of results

Case Studies-Lisheen Mine

ZEB1 with ZebRA mount & remote actuator for autonomous use

Case Studies-Lisheen Mine

Section of tunnel measured with Total Station and Modelled using 3DReshaper. Note the accurate roof surface and the approximate tunnel profile generated by reducing the number of measurement points used to create the walls.

Case Studies-Lisheen Mine

Identical section of tunnel measured this time with ZEB1 and modelled again using 3D Reshaper. Note this time the improved accuracy for all tunnel surfaces including roof and walls leading to more accurate tunnel volume calculations.

Worldwide

Thank You!

Questions?