Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第VI部門

シールドトンネル (7)

Thu. Sep 5, 2019 8:40 AM - 10:10 AM VI-2 (幸町北8号館 812講義室)

座長:青山 哲也(清水建設)

[VI-807] On the influence of groundwater on Additive in mud pressure shield method

*白川 元彦1、髙本 賢司1、田嶋 裕二1 (1. 前田建設工業(株))

Keywords:Mud pressure shield, Additives, mixing water , Groundwater analysis, iron, Formulation test

When using groundwater at the time of additive production, there is a possibility that the workability of the mud pressure shield may decrease and problems may occur because the performance of the additive due to the components contained in the groundwater impedes the performance of the additive.
Recognizing that mixing water is also one of the materials, it is necessary to carry out water quality analysis and test mixing when using groundwater.

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