Mine Monitoring – Surface

Side Wall Monitoring – Greater Productivity and Safety

ADVANCED WARNING OF SIDE WALL INSTABILITY

SP2’s remarkable and unique technology can be used to continuously monitor and detect microseismic events occurring within the slope walls of open cut mines and other surface material deposits such as levees, giving advance warning of internal movement and the potential for collapse.

Each sensor is capable of detecting microseismic events up to 1 km horizontally and below ground. This eliminates the need for bore holes.

DETECT MICROSEISMIC MOVEMENT OF LIQUID OR INSTABILITY

Its unique ability is to “see through”, in real time, the noise generated by machinery, vehicles and other ambient sounds, often many thousands of times greater than the microseismic events themselves. This now gives the potential for mines to significantly increase their yields by allowing the working angles of slopes and sidewalls to be increased and yet still meet safety requirements.

The 3D image of the internal strata continuously monitors real time changes and their location deep within the rock and spoil and, as excavation continues, early warning can be triggered well in advance of impending external movement or slippage – a breakthrough advantage over other techniques for slope monitoring

Mine Monitor; Trapped Miner Detection; Micro Seismic Monitor; TSF Monitoring; Mine Stability Monitoring
Mine Monitor; Micro Seismic Monitor; TSF Monitoring; Mine Stability Monitoring
Example of a typical deployment with the sensors mounted on the surface without the need for bore holes.

TAILINGS DAM AND SIDE WALL MONITORING

For monitoring an open pit or a dam, the sensors are mounted in shallow holes on or near the top of the structure.

Each sensor can typically monitor microseismic activity up to 1 km although gas outburst precursor events have been detected up to 5km.

The microseismic activity is displayed on a 3D image and updated in real time.

The microseismic events displayed are an indication of stress build up within the side walls or dam structure with the potential to lead to a failure.

In addition, water movement can be mapped in real time to visualise what is happening inside the structure. For a dam, this may include water penetrating into the tailings leading to movement of the base material in a process known as liquidisation. A detailed case study on this application ‘The view inside’ is now available – email to request your copy.