Swiss researchers throw chunks of concrete from mountain

Such computer models are used by authorities and geologists, among others, to create hazard maps. They help determine where and how construction can be carried out to ensure protection against rockfall and where protective structures are needed given the existing infrastructure.

Insight into movement and distraction options
With the experiment, researchers led by rockfall expert Joël Borner from the Institute for Snow and Avalanche Research want to find out how rocks and blocks fall on rough ground, how they move and how they are deflected by obstacles. Similar tests have been carried out on other types of ground.

Dangerous tests
The concrete blocks, which weigh between 45 and 200 kilograms, are equipped with sensors. Scientists use these to measure various data, including the acceleration and rotational speed of the blocks. In addition, a camera records the exact path of the stones. To make them more visible, the blocks are painted bright orange.

The undertaking is not at all safe. After all, the hiking trail from the Strela Pass to the Weissfluhjoch runs along the slope, along which one travels on foot or by mountain bike. In order to prevent accidents, there must be short-term closures.