Title:
GROUNDWATER LEVEL OBSERVATION EQUIPMENT, INSTALLATION METHOD FOR GROUNDWATER LEVEL OBSERVATION EQUIPMENT AND GROUNDWATER LEVEL OBSERVATION METHOD
Document Type and Number:
Japanese Patent JP2021148757
Kind Code:
A
Abstract:
To provide groundwater level observation equipment observing distribution and water level fluctuation of groundwater by a siphon principle using neither motive power nor a power source, installation method for the groundwater level observation equipment, and a groundwater observation method.SOLUTION: Groundwater level observation equipment comprises: a groundwater level observation tube 12 inserted into and installed inside a groundwater level observation hole 11 and having a groundwater inflow/outflow hole 13; a water storage tube 14 provided in a lower portion inside the groundwater level observation tube 12; a water level display tube 19 installed apart from the groundwater level observation tube 12 and having an outside air hole 20 in the upper portion of the water level display tube 19; and a communication tube 16 in which one-end opening 16a of the communication tube 16 is immersed in water of the water storage tube 14 and the other-end opening 16d of the communication tube 16 is immersed in water injected into the water level display tube 19 and which fills between the groundwater observation tube 12 and the water level display tube 19 thereby communicating the tube 12 and the tube 19 with each other. Thus, the groundwater level inside the groundwater level observation hole 11 is displayed with the water level display tube 19 by the siphon principle.SELECTED DRAWING: Figure 1
Inventors:
INAGAKI YUTAKA
Application Number:
JP2020052038A
Publication Date:
September 27, 2021
Filing Date:
March 24, 2020
Export Citation:
Assignee:
NIPPON KOEI CO LTD
International Classes:
G01V9/02; E02D1/00; G01D21/00
Attorney, Agent or Firm:
Toshiaki Furusawa