Property of backfilling injection into tail void including lubricant behavior for pipe jacking

Takashi Senda, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui, Shuichi Fujita, Akihiro Hamanaka, Yasuhiro Yoshida

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

Lubrication can effectively reduce necessary thrust for over-cutting if a discrete layer of the lubricant is maintained between the pipe and the excavated soil. The lubricant must be designed to form a layer in the surrounding soil, be pressurized to overcome underground water pressure and stabilize the over-cutting area. The lubricant should fill the complete over-cutting area to minimize surface settlement. However, it has been clarified that for a commercial lubricant to be effective, the ingredients such as sodium and potassium should be eliminated. As a result, for a lubricant not to lose its function as a support against the overburdening pressure of an over-cutting area (hereinafter referred to as tail void) and to enable a reduction in thrust, it is necessary to develop a better quality lubricant that can overcome these problems as soon as possible. From this perspective, a lubricating material comprised of a mixture of surfactant and fly ash was developed. This report focuses attention on minimizing soil deformation. In particular, to stabilize the layer in tail void between the pipe and the excavated soil and to examine the characteristics of material attributes to avoid reduction in thrust, a variety of experiments were performed using both traditional lubricating materials and a new material mixed with fly ash.

元の言語英語
ホスト出版物のタイトル30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012
ページ162-171
ページ数10
出版物ステータス出版済み - 12 1 2012
イベント30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012 - Sao Paulo, ブラジル
継続期間: 11 12 201211 14 2012

出版物シリーズ

名前30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012

その他

その他30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012
ブラジル
Sao Paulo
期間11/12/1211/14/12

All Science Journal Classification (ASJC) codes

  • Geology
  • Geophysics
  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Building and Construction

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  • これを引用

    Senda, T., Shimada, H., Sasaoka, T., Matsui, K., Fujita, S., Hamanaka, A., & Yoshida, Y. (2012). Property of backfilling injection into tail void including lubricant behavior for pipe jacking. : 30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012 (pp. 162-171). (30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012).