Title:
SHIELD EXCAVATION METHOD IN SHIELD TUNNELING METHOD
Document Type and Number:
Japanese Patent JP3421450
Kind Code:
B2
Abstract:
PURPOSE: To develop a novel shield excavation method whereby the flowability of excavated sediment and the prevention of seepage in excavation are improved in a shield tunneling method.
CONSTITUTION: A shield excavation method in a shield tunneling method is developed wherein flowable excavated sediment is mixed with an anionic water- sol. high-molecular substance and then with a cationic water-sol. high-molecular substance or a coagulant to make the sediment nonflowable. Thus, by mixing the excavated sediment with the anionic water-sol. high-molecular substance and then with the cationic water-sol. high-molecular substance or the coagulant, the sediment is agglomerated, dehydrated, and made nonflowable, acting as a cutoff plug against the earth pressure of the natural ground behind the bulkhead of a shield machine and thus decreasing the disturbance of the ground surrounding a shield cutting face and the settlement of the ground surface.
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Inventors:
Shigeyoshi Miura
Hiroshi Tanaka
Kazuo Sasaoka
Toru Nakajima
Tatsuya Kishida
Hiroshi Tanaka
Kazuo Sasaoka
Toru Nakajima
Tatsuya Kishida
Application Number:
JP26355094A
Publication Date:
June 30, 2003
Filing Date:
October 27, 1994
Export Citation:
Assignee:
Konoike Gumi Co., Ltd.
Nippon Star Science Co., Ltd.
Nippon Star Science Co., Ltd.
International Classes:
E21D9/06; C09K8/02; E21D9/13; (IPC1-7): C09K7/00; E21D9/06
Domestic Patent References:
| JP2107400A | ||||
| JP2194891A | ||||
| JP3100295A | ||||
| JP3129093A |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)
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