BEMIS seismic processing
BEMIS is a suite of software products for monitoring, analyzing and predicting seismic activity in underground mines. It is based on a cutting edge, real-time, seismic processing engine, delivering uniquely feature-rich event characterisation and location accuracy.
We provide BEMIS products and seismic processing expert services for mine operators.
Event locations to be confident about
Accuracy and precision of event location are key aspects of overall seismic system performance, where BEMIS has distinct benefits
- Event location precision. In direct comparisons, BEMIS has been shown to locate events with far better precision than legacy providers.
- Location accuracy. Benchmarked against legacy processing, using a large set of known events (blasts), BEMIS has been shown to be 4 times more accurate.
- Easy visualization of location uncertainty. With uncertainties being available for all events, engineers can easily determine regions where precision is high, and where it can improve.
The precision benefit of BEMIS is exemplified in the figure. To the left, legacy processing, showing scattering of events and a blurred, fuzzy view. To the right, BEMIS processing, with far more precise event locations and distinct clustering in a clear view.
Data-driven and self-calibrated velocity model
BEMIS uses a high quality and high resolution velocity model that is data-driven and self-calibrating. By continuously observing data from a seismic measurement system and automatically maintaining its comprehensive model, BEMIS stays up to date with rock mass changes. Another unique benefit this brings is that the data-driven model is free from artificially introduced constraints, such as inferred cave shapes or structures, that pollute event locations.
Example of a high quality velocity model. (1) A basic homogeneous velocity model. Hypocenter location uncertainty is large and donut shaped, given the sensor array layout and the use of a low fidelity velocity model. (2) A data-driven high-resolution velocity model. Uncertainty for the same event is reduced based on the data driven and self-calibrated BEMIS model.
Tools that empower engineers
The BEMIS catalog enables easy QA/QC and post-event analysis. Having location uncertainty, arrival time distributions, waveforms, travel time graphs, and more, easily available in a single user interface builds confidence in processing results, downstream analyses and decision making, empowering engineers.
The BEMIS mXrap Extension user interface example below shows processed blast events being compared to the known coordinates of the blast, an easy to use QA/QC tool available on a daily basis. This kind of easy access to complete data from within one user interface is pivotal for the day to day work engineers do.
