Title:
気泡土の処理方法
Document Type and Number:
Japanese Patent JP5959040
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for rapidly reducing flowability of foam soil without using a defoaming agent.SOLUTION: A method for processing foam soil comprises an initial step 102 and a subsequent step 104. In the step 102, the excavation soil produced by a foam shield construction is fed into a fracturing and foam breaking facility 11, so that the excavation soil is fractured and the foam in the excavation soil is broken. The bearing effect of the foam is thus eliminated, and the size of clod is reduced by the fracture of the excavation soil in the case of viscous soil. Consequently, a surfactant as a raw material of the foam can easily adsorb to soil particles. In the step 104, activated carbon is fed into the processed soil with broken foam. The activated carbon is uniformly dispersed in the processed soil of sandy soil and even of viscous soil due to the markedly-reduced size of the clod constituting the processed soil. The surfactant in the processed soil is thus efficiently adsorbed to the activated carbon. Disposal of waste soil including transportation and loading is more easily performed.
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Inventors:
Tsutomu Kimura
Yoshihiro Tanaka
Tsutomu Yashiro
Naoki Ueda
Hiroyuki Chino
Toshihiko Miura
Yuki Yamada
Kimiaki Sakamoto
Mario Fujimoto
Kenta Matsubara
Hayashi
Yoshihiro Tanaka
Tsutomu Yashiro
Naoki Ueda
Hiroyuki Chino
Toshihiko Miura
Yuki Yamada
Kimiaki Sakamoto
Mario Fujimoto
Kenta Matsubara
Hayashi
Application Number:
JP2011063364A
Publication Date:
August 02, 2016
Filing Date:
March 22, 2011
Export Citation:
Assignee:
Obayashi Corporation
International Classes:
E21D9/06; B09B3/00; B09C1/02; B09C1/08; E21D9/12
Domestic Patent References:
| JP200790323A | ||||
| JP5729792A | ||||
| JP200521888A | ||||
| JP2005279423A | ||||
| JP200675782A | ||||
| JP6224999U |
Attorney, Agent or Firm:
Satoshi Kubo