Title:
縦井戸ケーシングのシール構造
Document Type and Number:
Japanese Patent JP6775187
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To certainly prevent intrusion of foreign matters such as sediment into vertical well casings on an upstream side and a downstream side by preventing a large damage of a rubber packing to secure seal efficiency to a horizontal pipe in boring of the horizontal pipe.SOLUTION: Vertical well casings 22U, 22D on an upstream side and a downstream side are installed on the upstream and downstream sides of a tunnel 1 damming flow of underground seepage water, and both casings 22U, 22D are connected with each other to circulate underground water flow with horizontal pipes 23U, 23D on the upstream side and the downstream side connecting one ends by boring from a horizontal direction, and a connection pipe connecting the other ends of the respective horizontal pipes 23U, 23D. A circular pipe 30 of a communication part 3 of both casings 22U, 22D is provided with: a rubber packing 31; and a rubber seal material 32 over the whole circumferential area in a peripheral direction. A lubricant 33 contacting the respective horizontal pipes 23U, 23 to scatter so as to stick to one end sides of the horizontal pipes 23U, 23D in the case of performing boring is accommodated almost over a semicircle region of the peripheral direction of the circular pipe 30 between both 31, 32.SELECTED DRAWING: Figure 2
Inventors:
Mimura etc.
Youichi Yanagimoto
Satoshi Shioda
Seiichiro Tanaka
Hiroshi Oshima
Yagi
Hirayama Kohei
Youichi Yanagimoto
Satoshi Shioda
Seiichiro Tanaka
Hiroshi Oshima
Yagi
Hirayama Kohei
Application Number:
JP2016154417A
Publication Date:
October 28, 2020
Filing Date:
August 05, 2016
Export Citation:
Assignee:
Nagaoka Co., Ltd.
Osaka Waterproof Construction Co., Ltd.
Enbio Engineering Co., Ltd.
Osaka Waterproof Construction Co., Ltd.
Enbio Engineering Co., Ltd.
International Classes:
E02D31/02; E02D29/045; E02D31/00
Domestic Patent References:
| JP9041401A | ||||
| JP2002235333A | ||||
| JP2010203117A | ||||
| JP5240392A | ||||
| JP2005282315A |
Foreign References:
| US4907385 |
Attorney, Agent or Firm:
Katsunori Sugimoto