GROUNDWATER FLOW CONDITION ESTIMATING DEVICE AND METHOD, SOIL EFFECTIVE THERMAL CONDUCTIVITY ESTIMATING METHOD, AND GROUND SURVEY METHOD

Title:

GROUNDWATER FLOW CONDITION ESTIMATING DEVICE AND METHOD, SOIL EFFECTIVE THERMAL CONDUCTIVITY ESTIMATING METHOD, AND GROUND SURVEY METHOD

Document Type and Number:

Japanese Patent JP2007263957

Kind Code:

A

Abstract:

To estimate the flow conditions of ground water at low cost and with high accuracy in short times.

In a steel pipe 101 preparing a spiral blade 101a for digging at the apex circumferential surface, are prepared a coating nichrome wire (heater 102) wound on a core tube 03, a heat-insulating material 104, such as foam polystyrene placed in the core tube 103, and eight temperature sensors 105 and the like, arranged spaced equally at a fixed height position of internal surface of the steel pipe 101 are prepared. When the temperature change ΔT at a certain measuring point (a certain thermocouple) is the largest and the temperature change ΔT at another measuring point (thermocouple) facing that is smallest, the certain measuring point and the other measuring point are estimated to locate at downstream and upstream side of flowing direction of groundwater, respectively.

Inventors:

NAGANO KATSUNORI
NAKAMURA YASUSHI
KATSURA TAKAO

Application Number:

JP2007050447A

Publication Date:

October 11, 2007

Filing Date:

February 28, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON STEEL ENG CO LTD
UNIV HOKKAIDO

International Classes:

G01P5/10; E02D1/00; G01N25/18; G01P13/00; G01V9/02

Domestic Patent References:

JPH01192910A	1989-08-03
JP2005257367A	2005-09-22

Attorney, Agent or Firm:

Takayoshi Kokubun

Previous Patent: ULTRASONIC FLAW DETECTION METHOD AND APPARATUS

Next Patent: CLASSIFICATION METHOD AND DIAGNOSIS OF BLOOD CELL, AND TAILOR-MADE TREATMENT AND PREVENTION USING IT