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EPC Solutions Geotechnical and Structural Randa rockslide
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Randa rockslide

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In 1991 about 30 million cubic meters of rocks fell from a rock face near the village of Randa (10 km north of Zermatt). Rockslide installation of 3 strain sensor chains in borehole and surface installation of strain sensors on 2 cracks.

Image Randa rockslide

Automatic triggering and storing of 1000 Hz dynamic data during (micro)seismic activity.

  1. Hut with control room on top  of the slide
  2. MuST sensor installed on crack (left, grey protection tube)
  3. MuST sensor installed on crack (middle, grey protection tube)

 

INSTALLATION PERIOD TYPE OF SENSORS NUMBER OF SENSORS
2008 MuST 11
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Rock-slide overview (Google Earth view)

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Hut with control room on top on the slide

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Control room hut

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MuST sensor installed on crack (left grey protection tube)

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MuST sensor installed on crack (middle grey protection tube)

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Grouting during borehole installation of sensor chains

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MuST deformation sensor on Crack 'x2': Transient crack opening caused by a nearby Mag 3.4 earthquake


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