FROZEN SOIL THICKNESS CONTROL METHOD, FROZEN SOIL THICKNESS CONTROL SYSTEM, AND TEMPERATURE MEASURING TUBE

Japanese Patent JP2023072134

A

To provide a frozen soil thickness control method, a frozen soil thickness control system, and a temperature measuring tube capable of suppressing excessive freezing in a predetermined range of frozen soil.SOLUTION: A frozen soil thickness control system 2 comprising a freezing tube 3 installed on the ground 1, a freezing device 4 that circulates a freezing refrigerant in the freezing tube 3, an electromagnetic wave generator 5, and a plurality of antennas 6 for irradiating the ground 1 spaced apart from the freezing tube 3 by a predetermined distance with electromagnetic waves generated by the electromagnetic wave generator 5, is formed in the ground 1. Also, a temperature measuring tube 7 capable of measuring the thickness of a frozen soil 8 and emitting electromagnetic waves is installed on the ground 1. The temperature measuring tube 7 has a temperature sensor 11 for temperature measurement and the antenna 6 for irradiating electromagnetic waves arranged inside a tubular body 10. Electromagnetic waves generated by the electromagnetic wave generator 5 are applied to the ground 1 to heat the vicinity of a target formation surface 15 of the frozen soil 8, thereby suppressing the growth of the frozen soil 8 beyond the target formation surface 15.SELECTED DRAWING: Figure 3

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KAWANO KENICHI
NAGATANI HIDEMOTO
SATO KAZUNARI
YOSHIDA TERU
ISHIZUKA AKINORI
KIDANI KEIJI
KANESHIRO RYUHEI

JP2021184481A

May 24, 2023

November 12, 2021

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KAJIMA CORP
MICROWAVE CHEMICAL CO LTD

E21D9/04; E02D3/115; E02D19/14

Seiichi Inoue

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