Title:
EXCAVATION METHOD BY BLASTING
Document Type and Number:
WIPO Patent Application WO/1998/021544
Kind Code:
A1
Abstract:
An excavation method by blasting comprises performing delay blasting at a particular location, using time series data of vibrations or sounds generated at that time and time series of delay blasting initiation for the delay blasting, predicting time series data of vibrations or sounds of a single blasting at the location, claculating time series of delay blasting initiation, which produces waveforms of delay blasting vibrations or sounds meeting special requirements, on the basis of the predicted data of the single blasting obtained in the previous step, and carrying out the subsequent delay blasting in the time series of delay blasting initiation calculated.
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Inventors:
YAMAMOTO MASAAKI (JP)
NODA HIDEHIRO (JP)
SASSA KOICHI (JP)
NODA HIDEHIRO (JP)
SASSA KOICHI (JP)
Application Number:
PCT/JP1997/004001
Publication Date:
May 22, 1998
Filing Date:
November 04, 1997
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
YAMAMOTO MASAAKI (JP)
NODA HIDEHIRO (JP)
SASSA KOICHI (JP)
YAMAMOTO MASAAKI (JP)
NODA HIDEHIRO (JP)
SASSA KOICHI (JP)
International Classes:
F42D1/00; (IPC1-7): F42D1/00
Foreign References:
| JPH01285800A | 1989-11-16 | |||
| JPH07122559B2 | 1995-12-25 | |||
| JPH0814480B2 | 1996-02-14 | |||
| JPH07122559A | 1995-05-12 | |||
| JPH01285800A | 1989-11-16 | |||
| JPH0814480A | 1996-01-16 | |||
| JPS62261900A | 1987-11-14 |
Other References:
"journal of the japan explosives society, nippon kayaku gakkai-shi", vol. 55, part 4 1994
See also references of EP 0939291A4
See also references of EP 0939291A4
Attorney, Agent or Firm:
ASAHI KASEI KOGYO KABUSHIKI KAISHA (1-2 Yurakucho 1-chom, Chiyoda-ku Tokyo 100, JP)
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