Title:
CUT EARTH SLOPE MANAGEMENT SUPPORT SYSTEM, CUT EARTH SLOPE DISRUPTION RISK DEGREE DETERMINATION SYSTEM USED IN THE SYSTEM AND EARTH MOISTURE STATUS MEASURING METHOD
Document Type and Number:
Japanese Patent JP3953946
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cut earth slope management support system for supporting determination of timing of traffic restriction, in particular its releasing timing, a cut earth slope disruption risk degree determination system used in the system, and earth moisture status measuring method.
SOLUTION: In this cut earth slope management system, the safety factor of the slope is estimated to determine the timing of traffic restriction, in particular the releasing timing without obtaining the safety factor of the cut earth slope as an absolute numerical value by utilizing the effect that the safety factor Q of the cut earth slope is influenced by the precipitation R to relatively change. This depends upon that the safety of the slope has the characteristic of recovery after decline or stop of rainfall. That is, the safety factor of the cut earth slope tends to recover when rainfall is declined or stopped, so that the timing (the inflection point of safety factor of cut earth slope) showing the recovery tendency is grasped to precisely estimate the release timing of traffic restriction.
Inventors:
Amano Tadayuki
Hiroyuki Matsuyama
Kenji Ogata
Hiroyuki Matsuyama
Kenji Ogata
Application Number:
JP2002352030A
Publication Date:
August 08, 2007
Filing Date:
December 04, 2002
Export Citation:
Assignee:
East Japan Expressway Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
Central Japan Expressway Co., Ltd.
West Japan Expressway Co., Ltd.
International Classes:
E02D17/20; G01N27/02; (IPC1-7): E02D17/20; G01N27/02
Domestic Patent References:
| JP2002070029A | ||||
| JP9158186A | ||||
| JP2000297423A |
Other References:
上野誠、松尾稔、畑一民、中谷登,破壊確率を用いた斜面崩壊の予知手法,土と基礎,日本,社団法人地盤工学会,2001年 7月 1日,Vol.49,No.7,p.28-30
Attorney, Agent or Firm:
Kotatsu Nakamura
Takeshi Miyabe
Takeshi Miyabe