Want to capture a georeferenced 3D heading in less than 5 minutes with no survey support?

 

Sirovision Underground

Sirovision 6.1 introduces Datamine’s innovative new ‘Crosshair Laser Survey‘ system, developed in 2015/2016 in cooperation between Datamine and the Commonwealth Scientific and Industrial Research Organization (CSIRO ) with kind assistance from CMOC Northparkes Mines to field test at Northparkes.

Key Features

  • Produces high resolution, georeferenced 3D images suitable for geotechnical and geological mapping and analysis
  • No need for survey support or control points
  • One person operation
  • In and out of each heading in less than 5 minutes with minimum disruption to the mining cycle
  • Utilises already installed alignment lasers
  • Typically produces a spatial accuracy within 5 cms and orientation accuracy within 0.3 degrees of traditional theodolite survey methods

 

Ute and laser beam

Prerequisites

The Datamine Crosshair Laser Survey system requires a single known point on any wall being photographed.  

This is commonly acquired by utilising alignment lasers that are already installed in many underground mines. These lasers usually project a single laser dot from the main tunnel on to the back walls.

In order to geoeference the underground walls, Sirovision requires the following:

EITHER

The X,Y,Z of the a known point, such as an alignment laser dot on the back walls

OR

The X,Y,Z of the alignment laser source

The alignment laser bearing, dip and slope distance

 


Block Analysis

Equipment required

  • The Datamine Crosshair Laser mounted on  tripod and geared head
  • The Datamine Strereo Camera

3D underground drive

Capturing a heading

  • Turn on the alignment laser to project a single laser dot anywhere on the back walls
  • Set up the levelled Datamine Crosshair Laser to project on to back walls
  • Use the Datamine Stereo Camera for one-touch capture of stereo photographs
  • Return to the office and generate high resolution accurately scaled and georeferenced 3D models

End Results

What is possible?

Map structure on and analyse continuous 3D models of underground rock walls and take advantage of Sirovision’s array of analysis functionality including:

  • Structrual mapping tools producing immediate geotechnical characeristics
  • Simultaneous joint set analysis using 3D models and spherical projections/rose plots/charts
  • The Slope Stability Analysis tool considers geological domains with differing rock density, cohesion, friction and pore pressure to automatically detect and map unstable wedges and blocks
  • The Mineral Classification tool to automatically map and calculate exposed ore surface areas

 


Download the CMOC Northparkes Mines case study

DOWNLOAD