METHOD OF EVALUATING REINFORCING EFFECT ON DISCONTINUOUS FACE OF BEDROCK

摘要

PROBLEM TO BE SOLVED: To provide a method of evaluating reinforcing effect on the discontinuous face of a bedrock for verifying the reinforcing effect, the displacement constraining effect and the timbering strength of a lock bolt on the bedrock. SOLUTION: For evaluating the displacement inhibiting effect of the lock bolt 21 to be arranged on the discontinuous face around a tunnel 20 drilled in the bedrock 2, a three-dimensional displacement measuring device 1 is installed in a holed well 3 passing through the discontinuous face 4. The three- dimensional displacement measuring device 1 for three-dimensional measurement of the relative change of both bedrock 12 between which the discontinuous face 4 is located is installed in parallel to the lock bolt 21. The used holed well 3 in which the three-dimensional displacement measuring device 1 is installed is the one drilled for the rock bolt 21.