- Slope stability radar
The Slope Stability Radar (SSR) is a new application for the monitoring of slope stability at open-cut mines. It is a system currently in use across the global
miningand civil industries.
Slope stability is a critical safety and production issue for open-cut mines around the world. Many fatalities have occurred in mining due to sudden rock and wall collapses. Even when there is no injury, there is a high cost due to lost production and often damaged equipment. A common technique to determine slope stability is to monitor the small precursory movements, which occur prior to collapse. The “Slope Stability Radar” has been developed to remotely scan a rock slope to continuously monitor the spatial deformation of the face. Using differential radar interferometry, the system is used to detect deformation movements of a rough wall with sub-millimeter accuracy, and with high spatial and temporal resolution. The effects of atmospheric variations and spurious signals can be reduced via signal processing means. The advantage of the slope stability radar over other monitoring techniques is that it provides full area coverage without the need for mounted reflectors or equipment on the wall. In addition, the radar waves adequately penetrate through rain, dust and smoke to give reliable measurements, in real-time and twenty-four hours a day.
A time series of interferograms are combined to conveniently display the temporal and spatial movement characteristics of the wall surface. The amount of outward or inward movement of each pixel relative to the radar position is indicated by a colour change. The displacement history of selected regions can be displayed by spatially averaging over an unstable region and compared with a stable region. A polynomial regression fit to the data points can be made to measure the outward acceleration of the rock mass. A graphical user interface has been developed to display and compare the interferograms with co-registered images of the reflection amplitude, reflection range, or photographed scene. It also allows regions to be selected for continuous tracking and an adjustment of the various parameters used in the image reconstruction tools.
* [http://www.groundprobe.com/docs/NealHarries_JanFeb08Bulletin.pdf The use of Slope Stability Radar (SSR) in managing Slope Instability Hazards]
* [http://www.groundprobe.com/slopestability.html GroundProbe Slope Stability Radar]
* [http://www.rrs.co.za Reutech Radar Systems Pty Ltd]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Movement and Surveying Radar — In open pit mining operations, people and equipment are constantly at the base of a steep, man made slope (the highwall or pit wall). Instances where this slope fails resulting in a rock or earthfall can result in loss of life, injuries and… … Wikipedia
Interferometric synthetic aperture radar — Interferometric synthetic aperture radar, also abbreviated InSAR or IfSAR, is a radar technique used in geodesy and remote sensing. This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface… … Wikipedia
Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target … Wikipedia
Automatic Deformation Monitoring System — An automatic deformation monitoring system is a group of interacting, interrelated, or interdependent software and hardware elements forming a complex whole for deformation monitoring that, once set up, does not require human input to function.… … Wikipedia
Deformation monitoring — (also referred to as Deformation survey) is the systematic measurement and tracking of the alteration in the shape or dimensions of an object as a result of the application of stress to it. Deformation monitoring is a major component of logging… … Wikipedia
Automatisiertes Deformationsmonitoring — Ein automatisiertes Deformationsmonitoring besteht aus einer Gruppe interaktiver, zusammenhängender oder unabhängiger Software und Hardware Komponenten, die in der Gesamtheit einen Komplex zum Deformationsmonitoring bilden. Sobald die notwendigen … Deutsch Wikipedia
SSR — can be initials for:* SSR Personnel Services Limited, the largest global Security recruitment consultancy * Chevrolet SSR, a Chevrolet small truck * Disney s Saratoga Springs Resort Spa * Opera s [http://www.opera.com/products/mobile/smallscreen/ … Wikipedia
Deformationsmonitoring — Unter Deformationsmonitoring versteht man die systematische Messung und dauerhafte Beobachtung von Veränderungen der Form oder Dimension eines Objektes. Dazu werden Messdaten erfasst und aufgezeichnet, die für weitere Berechnungen,… … Deutsch Wikipedia
Landslide — This article is about the geological phenomenon. For other uses, see Landslide (disambiguation). Rockslide redirects here. For the comic book character, see Rockslide (comics). Computer simulation of a slump landslide in San Mateo County,… … Wikipedia
Geotechnical engineering — [ Boston s Big Dig presented geotechnical challenges in an urban environment.] Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering includes investigating … Wikipedia