Geotechnical engineers in Loughborough University in England have been working on a new way to prevent catastrophic soil shrinks on construction sites, and landslides, occur naturally, but without notice. Good sensor system of the measure reducing sound behaviour of soil to predict when a landslide or trench is imminent, so as to take preventive measures before people are injured.
The new system works exactly the same way as the bending Rod a cracking noise which build up until it snaps. So that the movement of soil before rocks creates increasing rates of sound, "says investigator Neil Dixon of major projects.
"This has been known from the 1960s, but what we have been able to do so is a new capture and process this information in order to quantify the relationship between noise and soil displacement rates as it happens in real time-and therefore provides early warning."
The system has the potential to prevent their untold number of incidents, construction worker injuries and deaths from naturally occurring landslides in the world.
You can use any infrastructure-building tools
Develop system dual-use items. First because the system does not require a central computer, it may be placed in a developing country or anywhere where there is some potential for subsidence. The second system can be deployed to monitor the construction sites, mines and pits with potentially unstable slopes, built to maintain the road or rail embankments, fees or other infrastructure.
Network of cheap sensors should optical and/or acoustic alarms. They could even be set up to send text messages to the safety of the workplace disaster response personnel, giving them early warning which would enable them to evacuate the area, stop the workers or residents of cross field for unstable or take steps in order to stabilize the slope or trench.
Sensors act as microphones, noise in the subsoil, and sent to the central computer for analysis. Increased soil noises are known to predict imminent soil shrinks, but such information does not have practical application.
"Developing low-cost independent acoustic slope sensors is only possible in very recent times due to the presence of microprocessors that are fast, small and cheap enough for this task," said Dixon.
Commercially available sensor system may have to start the prevention of landslides and construction accidents early in the next two years.
Source: Journal of occupational health and safety, "warned of the imminent landslides, 22 October 2010
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