SiteMonitor SLOPES is an automatic, remote laser based measurement system that enables hazardous or inaccessible areas to be safely monitored. This is achieved through the high-accuracy, automated, long range monitoring system that has the flexibility and performance to function in a wide range of applications. SiteMonitor SLOPES captures repeat, time-series laser measurements which are used to generate highly detailed 3D displacement maps of the surface under investigation.

The data displayed can be used to indicate imminent failure and other custom set alarm criteria, to ensure critical safety-monitoring decisions can be made quickly and efficiently. Through custom set alarming criteria and high tech geospatial analysis tools, the data can be used not only to identify and monitor any acceleration in movements which often occur as a precursor to large scale failures, but to understand the failure mechanics and determine effective future mitigation techniques.

System Operation

Acquire


  • Automatic (Continuous) or Periodic data capture
  • Precise and accurate measurements
  • Simple and reliable hardware
  • Wizard-based setup allows personalized monitoring schedules

Analyse


  • Visualise, examine and analyse your data
  • Identify and query movement with the Analytical Toolbox
  • Track displacement through time. Correlate results with external datasets
  • Create figures and reports to communicate and share results easily

Alarm


  • Improve Safety: Alarm your data to mitigate against failure in real time
  • Early detection of surface movements and moisture leakage
  • Improve decision-making with real, easy to understand evidence
In our current era we are employed within a demanding and dynamic mining environment where mechanisation is a keyword used and applied. The SiteMonitor setup and Acquisition module has really catered for this in the sense that it simplified human interaction and increased safety and productivity within this arduous environmentFrans Benadé, Section Surveyor at Mogalawena Mine
  • Range This refers to the absolute range to the selected data or measure distance to the points from the scanner (in meters)
  • Displacement Rate This displays the rate at which displacement is occurring, which is mm/day. This can be viewed in incremental mode or averaged according time/scans. Displacement rate can give significant information about the acceleration of movement or failure.
  • Volume The software provides the volume in cubic meters of selected areas of interest. This is significantly used in determining the volume of failed material.
  •  Vertical and horizontal sections The user is also able to extract vertical and horizontal sections of an area of interest. One can view the change in vertical section of any slope deformation over a number of scans or period of time.
  • Report SiteMonitor can generate report on HTML format. The content of the report is user defined, and once the report has been exported the user is also able modify it.
  • Rockfall It provided information on rockfall events and maintains history, as seen on the case study below.
  • Stereonets Geological or Geotechnical structural information forms an integral part of slope management in determining the type of failure mechanism. Stereonet plot functionality provides this information for Rock Engineers to analyse.
  • Displacement The displacement graph gives information about the relative range difference between the baseline survey (Reference Set) and the currently selected data. This aids to provide information on movement of ground for potentially unstable areas. The image below depicts evolution of potentially unstable area through cumulative displacement.
Continuous Mode
In this scenario, the laser scanner would be set up in a protective housing, with a mains power supply and a stable pillar on which it can be mounted.

A number of reflectors installed around the monitoring region(s) enable the Range Correction Factor (RCF) to be calculated and the stability of the scanner to be monitored. If the scanner needs to be moved, the reflectors allow the monitoring project to be resumed at a later date.

Once a scanning schedule is defined, the software can run automatically without further operator intervention. All data is transmitted live to an office-based computer running SiteMonitor4D Analysis, allowing rapid evaluation by surveyors and geotechnical engineers

Periodic Mode
The scanner can be removed between surveys if continuous monitoring of a site is not required or the scanner may be removed between surveys for security or discretion.

Following the quick setup of a monitoring project, subsequent data collection surveys can be carried out by simply setting up the scanner, scanning a number of control points (to provide an orientation and a range correction factor) and re-scanning the areas of interest. Data gathered during periodic monitoring can be transmitted back to SiteMonitor4D Analysis on a remote link or downloaded by the operator when the field work is complete.

Open Pit Mining

  • Slope stability assessment
  • Mine plan conformance analysis
  • Volume measurement
  • Underground deformation

Infrastructure

  • Structural health monitoring
  • Bridge monitoring
  • Dam safety monitoring
  • Road network monitoring

Security and Defence

  • Ground disturbance
  • Aerial surveillance
  • Foreign object identification

Geohazards

  • Landslide monitoring
  • Avalanche monitoring
  • Coastal erosion
  • Seismic displacement
  • Rockfall analysis
  • Volcano monitoring
Using the SiteMonitor software has been a great experience for me. One of the major challenges faced by Geotechnical Engineers in open pit mines today is the current lack of a system for rock fall risk management. The SiteMonitor software provides a solution to this problem. It…enables
us to assess the risk and to ensure that appropriate rock fall mitigation is in place. There is no other system currently in the market that is capable of offering the sames functionalities.Ernest Rankhododo, Chief Rock Engineer at Moglalakwena Mine

Related Reading

Slope Monitoring Solutions for Open Pit Mines | View Page | Download

Monitoring Coastal Instability using Airborne and Terrestrial LiDAR | Download

New Improvements to SiteMonitor4D – Rockfall Analysis | View Page

3D Laser Mapping Tunes in to Customer Needs to Deliver Market Making Solutions with SiteMonitor and StreetMapperIV | View Page

SiteMonitor is currently being used and developed in partnership with Durham University, looking into developing a system to monitor erosion and rockfall on coastal cliff faces.

Innovation & Research Focus: ‘Real time laser mapping for monitoring coastal erosion and rockfall’