Title:
地盤の飽和度測定のためのキャリブレーション方法
Document Type and Number:
Japanese Patent JP5785105
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a calibration method and a device which enable a high-precision measurement to be achieved in measuring saturation of the ground on the basis of specific resistance of sand ground with air injected thereinto.SOLUTION: A calibration method obtains a relation between saturation and specific resistance by: filling a sample of the ground G in a container 2 which can be sealed and has two conducting electrodes 7 arranged with a distance in between as well as detection electrodes 8a to 8e separately arranged in the distance between the two conductive electrodes 7; bringing the sample of the ground G to have saturation of 100% by filling water in the container 2 through a water supply pipe 5 while deaerating the container 2 through a suction pipe 6; sequentially reducing the saturation by draining water from the container 2 through the water supply pipe 5; detecting voltages between the detection electrodes 8a to 8e, at respective saturation, by voltage detection means 11 with an electric current applied to the conducting electrodes 7 by conducting means 10; and calculating the specific resistance of the sample of the ground G by calculation means 12 on the basis of the electric current as well as the voltages.
Inventors:
Hiroyuki Saegusa
Akihiro Miyoshi
Naoshi Fujii
Naoyuki Yamada
Akihiro Miyoshi
Naoshi Fujii
Naoyuki Yamada
Application Number:
JP2012010252A
Publication Date:
September 24, 2015
Filing Date:
January 20, 2012
Export Citation:
Assignee:
Toa Construction Industry Co., Ltd.
Fudo Tetra Co., Ltd.
Oriental Shiraishi Co., Ltd.
Diamond Consultant Co., Ltd.
Fudo Tetra Co., Ltd.
Oriental Shiraishi Co., Ltd.
Diamond Consultant Co., Ltd.
International Classes:
E02D1/00; G01V3/08
Domestic Patent References:
JP2002257940A | ||||
JP2003049418A | ||||
JP2010248698A | ||||
JP2000111459A |
Attorney, Agent or Firm:
Seiryu International Patent Service Corporation
Takayoshi in the daytime
Shinichi Ogawa
Takashi Noguchi
Kenji Sato
Isao Hirai
Masao Sakaizawa
Kazuhiko Saishita
Takayoshi in the daytime
Shinichi Ogawa
Takashi Noguchi
Kenji Sato
Isao Hirai
Masao Sakaizawa
Kazuhiko Saishita