- Origen: A collapse of the surface layer; creating a deep unpredictable hole
- Trigger: Chemical, Water, Erosion, Often in rock that can be dissolved (limestone)
- Danger: Destroy property, drag people into a hole and kill
- Behaviour: Sudden limited onset and difficult to get away
- Place: Mainly depends on the ground
- Other: It is possible to predict potential risk and partially the onset
- The size is from a few meters to about 100 m
- Precaution: Be careful when in risk areas; Remember sewer collapses and extraction of groundwater
- Closedown of Society: Minimal
WFET on Sinkhole
We need to be more conscious about where we are. If we are in a risk area, then we should be conscious about where we move and stay. Sinkholes happen from time to time in distinct areas. Ask local people about sinkholes in the area where you are. They will give information about risk areas and safer areas. If a sinkhole develops it simply come. You will have little information before the hole occurs and start growing. That is why you have to plan; plan BEFORE the emergency.
This is called to make your emergency plan. That is IF the worst case scenario happens, a sinkhole. What do you do? First you need to set your parameters; where is less likely to develop a sinkhole. Divide into different zones red, yellow and green. When you move into a yellow zone you need to have a way out if something happen or a safe place to run. When moving into red zone you need to me on 100% alert, have a pre-defined way out and pre-defined clues for you to pull out. If it is possible define safe zones to use IF you cannot get out. Perhaps most important than everything, STAY CALM!