Landslip Early Warning Sensors - how do they work?

[Peter749]

A post on the Shap derailment mentioned "Landslip Early Warning Sensors" and I have seen these before with rows of posts with a white square at the top
And I noticed today a few locations between Preston and Lancaster where these are in the cutting.

Just wondering how they work and how they test them to check they are working?

Peter

 

[edwin_m]

Here's one example: https://www.railengineer.co.uk/intelligent-monitoring-for-slope-risk-management/

Remote condition monitoring specialist Senceive has pioneered the use of IoT technology over the last decade to provide a robust and proven wireless intelligent monitoring solution (IMS) to detect and respond to ground movement and provide early warning to geographically dispersed stakeholders. The core element of the system is a network of long-life movement sensors, connected to each other and the internet via a wireless radio platform.

I've a feeling the same magazine has other similar articles if you search around a bit..

 

[StompinBallast]

This has abit of info on how this brand of sensor work

Wireless Tilt Sensors, Inclinometers & Tiltmeters | Senceive

Wireless tilt sensors & inclinometers delivering precise, reliable readings. Durable, robust & long-lasting. Up to 15 years battery life. Request a quote today.

www.senceive.com

 

[apinnard]

Don’t forget there is the rock fall early warning signalling system installed on a part of the West Highland line in Scotland. Originally a design from the 1880s, it’s still in use today.

Pass of Brander stone signals - Wikipedia

en.wikipedia.org

Above: Link to the Wikipedia article describing the “Anderson’s Piano” signalling on the West Highland line in Scotland.

 

[Peter749]

Don’t forget there is the rock fall early warning signalling system installed on a part of the West Highland line in Scotland. Originally a design from the 1880s, it’s still in use today.

Pass of Brander stone signals - Wikipedia

en.wikipedia.org

Above: Link to the Wikipedia article describing the “Anderson’s Piano” signalling on the West Highland line in Scotland.

Not quite sure how that would apply to an embankment slip?

Anyway RAIB are looking in to the derailment - https://www.gov.uk/government/news/derailment-of-a-passenger-train-at-shap

"Our investigation will determine the sequence of events which led to the derailment and will include consideration of:

• the design, maintenance and management of earthworks and drainage in this area
• the effectiveness of on-site monitoring equipment
• the operational response to adverse weather warnings
• the performance of the train during the derailment
• any underlying factors which might have contributed to the derailment."