Title:
【発明の名称】大断面の硬岩トンネルにおける無発破工法
Document Type and Number:
Japanese Patent JP2804349
Kind Code:
B2
More Like This:
Inventors:
Tatsuo Saito
Application Number:
JP18153390A
Publication Date:
September 24, 1998
Filing Date:
July 11, 1990
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
International Classes:
E21D9/00; E21C37/00; E21D9/01; E21D9/10; (IPC1-7): E21D9/00; E21D9/10
Domestic Patent References:
| JP2136491A | ||||
| JP518737A |
Other References:
【文献】特許137209(JP,C2)
Attorney, Agent or Firm:
Toshitada Takahashi (1 outside)