Title:
LOCK ANCHOR BOREHOLE MEASURING DEVICE AND LOCK ANCHOR CONSTRUCTION METHOD USING THE DEVICE
Document Type and Number:
Japanese Patent JP2628525
Kind Code:
B2
Abstract:
PURPOSE: To prevent the collapse of the steep cliff face.
CONSTITUTION: A shaft 3 is formed being dug down near the cliff face 20 assumed to collapse, and a borehole 22 is formed through in the state of connecting the lining concrete 31 of the shaft 3 to the cliff face 20. A measuring device 25 with a limit switch 31 provided at a hole wall detecting part 25a at the tip of an extendedly connectable rod 26 and with an indicator lamp 28 serving as an output means is inserted into the borehole 22 to measure the length L4 correctly, and an anchor body 6 is inserted into the borehole 22, in the form of corresponding to the length L4. A lock anchor 5 is cast and fixed in the state of a pilot cap 7 at the tip of an anchor body 6 being disposed in the position corresponding to the cliff face 20, and a rock-bed between the cliff face 20 and the shaft 3 is locked and reinforced accurately.
Inventors:
Kumi Tsumura
Kimoto Kayo
Umemiya Takanori
Kimoto Kayo
Umemiya Takanori
Application Number:
JP35336992A
Publication Date:
July 09, 1997
Filing Date:
December 11, 1992
Export Citation:
Assignee:
Mitsui Construction Co., Ltd.
International Classes:
E02D5/80; (IPC1-7): E02D5/80
Attorney, Agent or Firm:
Shinji Aida (1 outside)