The Earthquake Engineering Online Archive

On the theory and design of rockbolted tunnels

Ewoldsen, Hans; McNiven, Hugh D.

UCB/SESM-1968/15, Dept. of Civil Engineering, University of California, Berkeley, 1968-10, 60 pages (500/C23/68/15)

Presents rational design procedures for choosing the geometrical array of bolts in a three dimensional pattern once the diameter of the tunnel is known with its depth below surface, the mechanical properties of the rock are known, and a decision has been reached about the state of horizontal stress in the rock. The report is in two parts.

Available online: http://nisee.berkeley.edu/documents/SEMM/SEMM-68-15.pdf (27 MB)