An overview of maintaining a database for pit slope monitoring using Ground Based Radars
Sharla Coetsee Reutech Mining, South Africa Priyanka Narshai Reutech Mining, South Africa Abstract There are several key, predefined steps to first establish and thereafter maintain a ‘living’ pit slope monitoring database for a Ground Based Radar (GBR). This paper discusses the key considerations that should be taken into account daily for mining operations using a […]
ACG Article Extension 2023
Sharla Coetsee Reutech Mining, South Africa Establishment and Maintenance of a Successful Pit Slope Monitoring Database Slope performance monitoring is integral for ensuring safe operational conditions during mining activities, and for gauging the efficacy of the slope design applied. There are a number of sensors that contribute to a slope monitoring program, for which the […]
ACG Article 2023
Sharla Coetsee Reutech Mining, South Africa Establishment and maintenance of an effective pit slope monitoring database Slope performance monitoring is integral for ensuring safe operational conditions during mining activities, and for gauging the efficacy of the slope design applied. There are a number of sensors that contribute to a slope monitoring program, for which the […]
The concept of reference time and time windowing
The reference time denotes a predetermined date and time for which the value of the measurements are set at 0, thereafter all measurements are included. Any measurements prior to the reference time are not utilised in the alarm calculations. The reference time may be the start of the database, a strategic review period of time […]
Tactical, longer term monitoring
This case study illustrates longer term, tactical monitoring for a dataset over the period of four and a half months. The country rock for which this dataset was collected is situated in a basalt, a hard, brittle rock mass that is defined by structurally opposed to rock mass instability. The instabilities tend to form with […]
Structurally bound, complex instability
A rock mass instability was identified on a portion of an inter-ramp slope at a large open pit mine. The distance between the radar and the pit slope was 1 600 m. In this case, the trend plots are illustrating progressive movement in the cracking and dislocation class, however, this portion of the pit slope […]
Rock mass instability
A rock mass instability was identified at the base of an inter-ramp slope, above a ramp at a large open pit mine. The distance between the radar and the pit slope was 1 400 m. There was no physical evidence such as tension cracks on the bench crest prior to the collapse of the rock […]
Structurally bound planar instability
A planar instability was identified on an inter-ramp slope at a large open pit mine. The distance between the radar and the pit slope was 750 m. The instability was preceded by the identification of tension cracks at the pit crest, which formed part of the creep movement stage. The onset of significant movement in […]