CHARGING TYPE UNDERGROUND CRUSTAL ACTIVITY OBSERVATION DEVICE

摘要

PROBLEM TO BE SOLVED: To shorten the working time to embed a measurement part in a bottom of a boring hole by providing a charging type underground crustal activity observation device capable of detaching a compound cable, to lower a boring equipment to the hole bottom in renewing the measurement part of the device, to recover the measurement part of the embedded device for recycling the hole bottom. SOLUTION: A measurement part 1 of a charging type underground crustal activity observation device is embedded in a boring hole 3, and a compound cable 100 having an electrode 70 to supply the power to a tip part of the measurement part 1 from a recording part 2 installed on a mouth of the boring hole 3 and a data exchanging means to transmit/receive the data and the control signal to/from the measurement part 1 is lowered into the boring hole 3. The tip of the compound cable 100 is joined with the measurement part inside a container provided on an upper part of the measurement part, and covered with an electrically insulating liquid to charge a power source of the measurement part 1 and to transmit/receive the control signal while protecting a joined part.