Stuart Tierney Articles

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New Background Filters

New Background Filters

We have added some new event filter options to General Analysis related to ‘background’ activity. ‘Background’ events are generally defined as having low variability in space and time. The new background filters aim to identify events that are clustered in space and...

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New b-value isosurfaces

New b-value isosurfaces

The isosurfaces for b-value have been upgraded in the latest root. There is now much more control over the isosurface levels. Up to 5 iso's can be plotted for user defined ranges. A linguistic name can be assigned to each level and displayed in the legend. A new video...

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Survey Format Converter

A simple utility app has been added to the main root that can be used to export surveys loaded in mXrap. Possible reasons to use this app include: Switch between file formats Export a decimated survey Export a survey with translated or swapped coordinates Combine...

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Short-term Response Analysis Application

Short-term Response Analysis Application

Another new app has been added to the Seismic Suite for the general analysis of short-term seismic responses. There are multiple features to analyse the short-term response to different triggers (events or blasts) in time and space. In later versions, this app will...

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Mine Geometry Models Application

Mine Geometry Models Application

The root upgrade that coincides with the software upgrade beyond v5.9 includes a new app for creating and exporting models of mine geometry. Stope, cave and development geometry is a fundamental aspect of most geotechnical analysis. Mine geometry also varies over time...

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mXrap Interface Upgrade

mXrap Interface Upgrade

We have started rolling out a new version of the mXrap software and root folder. Software versions 5.9 and above include a few interface changes. The new version is available on the download site but DO NOT download it until someone from the mXrap team has upgraded...

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Strong Ground Motion Relationship

Strong Ground Motion Relationship

The Strong Ground Motion (SGM) relationship is used to calculate the Peak Particle Velocity (PPV) generated by a seismic event. You may also hear this referred to as a Ground Motion Prediction Equation (GMPE), but only the maximum velocity is estimated, i.e. the...

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What do the Hazard Iso’s mean?

What do the Hazard Iso’s mean?

The Iso View in the Hazard Assessment application expresses the seismic hazard in two ways. The current yearly hazard within the chosen grid volume. This is shown in the footer of the 3D view, as the probability of an event exceeding the design magnitude. The spatial...

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What are minodes?

Minodes are what we use in multiple places in mXrap if we want to assign information to development. They are just point locations, dotted along your development, in roughly 5m intervals. Things like ground support and PPV hazard are really only relevant for...

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Seismic Energy and Moment

Seismic Energy and Moment

You know that energy and moment are parameters to describe seismic events. But what exactly is their physical meaning for a seismic event source and how are they calculated? Moment and energy are both separate (but related) measures of the strength of a seismic event....

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Download a root in mXsync

Did you know you can download root folders from mXsync? We have uploaded root folders for Tasmania and Big Bell mines. These sites have closed and the data has been made available for research. Have a look at the "Download a component" training video for a guide to...

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What on Earth is MUL?

What on Earth is MUL?

Yes, this is a frequently asked question.... MUL or MUpper-Limit refers to the truncating magnitude of the Gutenberg-Richter distribution. We used to refer to this as Mmax in the Hazard Assessment app and on the Frequency-Magnitude chart but we found there was...

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Training Video Programme

We started making training videos about 12 months ago and feedback has been quite positive. At the last AGM, a suggestion came for a training programme aimed at new users to mXrap. The training videos are currently stored by app but a specific programme would help new...

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Chart Tips – View Controls

Chart Tips – View Controls

Charts usually auto-adjust their ranges to the input data. This is often what you want, but occasionally it does make it harder to compare charts with different filters applied. A handy tip is to enable the "Zoom and Pan" option in the top-left. This disables the...

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Quick Reference Guide

Quick Reference Guide

Most users are probably aware of the Quick Reference Guide in the Cheat Sheets. It lists all the mXrap shortcuts and hotkeys but it is spread over a few pages and can be a bit tough to find what you're looking for. Below is a one-page Quick Reference Guide for more of...

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To a/b, or not to a/b

To a/b, or not to a/b

The a/b value is sometimes used as a measure of seismic hazard but there are some common mistakes made with this analysis and interpretation. What is a/b? The Gutenberg-Richter distribution is a statistical model that describes a log-linear relationship between the...

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3D Distance Measuring Tool

3D Distance Measuring Tool

You can now measure distances in any 3D view in mXrap (version 5.6.0 or later) with the ruler tool in the Annotations tab. The "Annotations tool" training video on the General and FAQ page goes through all the features and the operation. Most operations will probably...

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Updates to Survey Importing

Updates to Survey Importing

If you have updated your software to 5.4.0 or higher, you may have noticed some changes to the Survey Import tool. The Survey Setup training video has been updated on the General and FAQ page. The main changes have been to support additional properties from DXF files....

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Fun and Games with mXrap

Fun and Games with mXrap

If you were wondering what a bored Xman does in their free time, this might give you an indication..... You should know by now that mXrap is very flexible and apps can be developed to perform a very wide range of functions. If you were doubting that, this might change...

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Why aren’t my events updating?

Why aren’t my events updating?

If you notice that you are not getting updated events in mXrap, there are a few possible explanations. In order to troubleshoot the problem, it is good to know exactly how your events are transferred from your seismic database, into mXrap. The first thing to check is...

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Event Tags and Comments

There are many reasons you might want to store a short snippet of text associated with an event. There are two ways to do this in mXrap; event tags and event comments. Event tags can be used to group events into categories. Example tags might be “suspected blast”,...

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Image Capturing

Image Capturing

You can capture or save any 3D view, chart or table using the "Clip" or "File" options at the top-right of the mXrap window. There are additional image capturing controls available to increase the quality and to adjust what is captured in the image. For capturing...

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mXsync

mXsync

By now most of you have probably heard of mXsync. It has been installed at all the current sponsor sites and we did explain briefly as we went but there might still be some uncertainty about it. mXsync is a piece of software installed separately to mXrap that...

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Why can’t I see this event in mXrap?

There are a number of quality filters applied to the event database before they are displayed in mXrap. This does sometimes cause confusion because a particular event is visible in your other software, but not in mXrap. The most common cause is the location filter but...

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How do I change my event magnitude marker?

The default event local magnitude marker might not suit everyone. After all, a ML+1.0 might mean something completely different to you compared with the site next door. The “Change event marker style” video at the page below will run you through how to make a site...

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mXrap Training Videos!

If you want to learn more about mXrap, we don't have a user manual to read. Who would want to read through one of those! We have been writing "cheat sheets" to show new users the main features of mXrap. We're still going to try and keep the Cheat Sheets updated, but...

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