One of the papers I have read while studying at home:

Development of a new empirical method for Tunnel Squeezing Classification (TSC)

Hadi Farhadian (Department of Mining Engineering, Faculty of Engineering, University of Birjand, , Iran)

Arash Nikvar-Hassani ( Department of Civil & Architectural Engineering & Mechanics, University of Arizona,USA)

https://qjegh.lyellcollection.org/content/early/2020/04/02/qjegh2019-108