Title:
UNDERGROUND WATER COLLECTION DEVICE
Document Type and Number:
Japanese Patent JP3261116
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To protect the wall of the boring hole of an underground water collection device and prevent underground water fouling by attaching a guide member on a cylindrical body so that a cable such as a wire attached to a bottom cover is inserted at the prescribed position of the cylindrical body.
SOLUTION: A cable 2 attaching a bottom cover 3 on the edge is lowered to lower the bottom cover 3 at a water collection position, and a cylindrical body 4 inserting the cable 2 in the inside of a pipe 8 is lowered in the underground water layer of the inside of a hole. When the bottom opening 4a of the cylindrical body 4 reaches the bottom cover 3, the centers of the bottom cover 3 and the cylindrical body 4 are matched to smoothly insert the bottom cover 3, and a bottom opening 4a is closed surely. Furthermore, an elastic member 3b is adhered to the tapered face 6 of the bottom opening 4a to perform sealing surely. Next, a cover 5 inserting the cable 2 is settled in the underground water layer, inserted in the upper opening 4b of the cylindrical body 4, and the edge is conically inserted in one end so as to be bitten into the upper opening 4b. Thereby the falling speed of the cylindrical body 4 is reduced to surely fit the cylindrical body 4 to the bottom cover 3 so as to improve precision of water collection.
Inventors:
TSUCHIHIRO MICHIO
Application Number:
JP29208599A
Publication Date:
February 25, 2002
Filing Date:
November 05, 1998
Export Citation:
Assignee:
KAJIMA CORP
International Classes:
E21B49/08; E02D1/06; (IPC1-7): E21B49/08; E02D1/06
Domestic Patent References:
| JP5737440U | ||||
| JP5028781Y1 | ||||
| JP41489Y2 |
Attorney, Agent or Firm:
Tsukasa Kubo