Numerical Methods for Geo-Engineering
doi:10.3850/978-981-07-0188-8_P050
A Study on Numerical Simulation during Chemical Grouting
Takashi Nakayama1,a, Naoki Tachibana2, Noriyuki Okano1,b and
Hirokazu Akagi3
1,aAssistant Senior Researcher, bSenior Researcher, Railway Technical Research Institute,
2-8-38 Hikari-cho Kokubunji-shi, Tokyo 185-8540, Japan
2Chuo Fukken Consultants Co., Ltd, 4-11-10 Higashinakajima, Higashiyodogawa-ku, Osaka-shi,
Osaka 533-0033, Japan
3Professor, Faculty of Science and Engineering, Waseda University, 58-205, 3-4-1, Ohkubo, Shinjuku, Tokyo 169-8555, Japan
ABSTRACT
The chemical grouting has the advantages that equipments are small and the direction of boring has flexibility. Therefore, in Japan, it is frequently used for a soil-improvement method in the railway construction site where workspace or working hours is limited. However, it has the possibility to cause a ground displacement around the site. Because there is no method that estimates it quantitatively, the design based on old cases is still used mainly and focuses on safety overly.
In this Study, the simplified numerical analysis for ground behavior due to the osmotic pressure during injection is proposed.
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