Title:
GROUNDWATER SAMPLING EQUIPMENT AND GROUNDWATER SAMPLING METHOD
Document Type and Number:
Japanese Patent JP3955871
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide groundwater sampling equipment which can be inexpensively manufactured because its constitution is simple and compact and which enables the groundwater to be easily and efficiently sampled in a pressurized inactive state, and a groundwater sampling method.
SOLUTION: The groundwater sampling equipment comprises: a vacuum source 31; a water sampling vessel 3 which has an on-off valve 13, which is vacuumized by the vacuum source 31, and which is inserted into a water sampling section in a borehole BH in the closed state of the on-off valve 13; an actuator control part 19 on the ground; and an actuator 4 which samples the groundwater into the vacuumized vessel 3 by opening the on-off valve 13 by the control of the actuator control part 19, and which seals the vessel 3 by closing the on-off valve 13. The groundwater sampling method comprises: a vacuumization step of vacuumizing the vessel 3; an insertion step of inserting the vessel 3 into the water sampling section in the borehole BH; a water sampling step of sampling the groundwater into the vacuumized vessel 3 by opening the vessel 3; a sealing step of sealing the vessel 3; and a pull-up step of pulling up the vessel 3 to the ground.
Inventors:
Nagashi Sugiyama
Masao Saito
Hiroshi Yamaguchi
Shigeo Yamamoto
Masao Saito
Hiroshi Yamaguchi
Shigeo Yamamoto
Application Number:
JP2005000749A
Publication Date:
August 08, 2007
Filing Date:
January 05, 2005
Export Citation:
Assignee:
Central Development Co., Ltd.
International Classes:
E21B43/00
Domestic Patent References:
| JP2004316350A | ||||
| JP2000199396A | ||||
| JP9025783A |
Attorney, Agent or Firm:
Tomoo Takahashi