Case study of cutter soil mixing (CSM) method on hard soil conditions

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

A vertical cut off wall for water barrier was constructed at the final landfill disposal site in Oita prefecture of Japan to prevent the inflow of groundwater from the surroundings of the landfill site and leakage of leachate (sewage) to the outside. Due to existence of hard rock formations existed in the target ground to construct the cut off wall for water barrier, a Trench cutting Re-mixing Deep wall (TRD) construction method using a pre-drilling by a double rock auger in combination was planned for excavation of cut off wall for water barrier, initially. However, if this plan was adopted, there should be tight schedule for the construction due to pre-drilling. The alternative with CSM (Cutter Soil Mixing) construction method which does not require pre-drilling even in hard rock formation was proposed and the excavation was carried out with CSM method against relatively less hard rock formations. Also, a new machine imported from overseas was used for CSM construction method. Since, in Japan, there is no previous experience for drilling of hard formation layer with the new CSM machine, a pre-test was carried out. In the pre-test, the quality of the soil mixing wall and its drilling capacity against the hard rock formation were checked. The pre-test result was included in the construction cycle for CSM method with the new machine. From this point of view, case study of construction with CSM method which was applied to vertical cut off wall for water barrier of waste landfill waste disposal site in Japan is described and the pre-test performance of rock drilling is summarized in this paper.

本文言語英語
ホスト出版物のタイトルISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018
出版社International Society for Rock Mechanics
ISBN(電子版)9789811190032
出版ステータス出版済み - 1月 1 2018
イベント10th Asian Rock Mechanics Symposium, ARMS 2018 - Singapore, シンガポール
継続期間: 10月 29 201811月 3 2018

出版物シリーズ

名前ISRM International Symposium - 10th Asian Rock Mechanics Symposium, ARMS 2018

会議

会議10th Asian Rock Mechanics Symposium, ARMS 2018
国/地域シンガポール
CitySingapore
Period10/29/1811/3/18

!!!All Science Journal Classification (ASJC) codes

  • 地球化学および岩石学
  • 地球物理学

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