Bosai Solution ID : JBP00060

WILL Mixing Method
Soil Mixing Technology showing high-performance mounted on conventional
excavator

HazardEarthquake Tsunami Land Slide Storm Surge FloodSolution Purpose
Prevention & Mitigation Response Recovery

Solution Theme
Infrastructure Technology Building Technology

Technology Subject
River & Basin Dam & Reservoir Coast Sabo Road Railways Airport Port Essential Utilities Urban Design &＜ Downloaded from www.bosai-jp.org ＞

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Construction of Resilient Building

Advantages
High mixing performance by special mixing blades (Ribbon Screw)
Easy installtion even to stiff and hard ground by assisting device (Boomerang Blade)High-performance control system including track navigation

Solution Illustrated
Special mixing blades (Ribbon Screw)• making mixed soil rocked in 3 dimension• providing highly efficient mixing

Special device (Boomerang Blade)• helping it drive in hard ground.
• High-performance control system

Providing operator friendly monitoring• Providing highly reliable quality control• Navigation system•

Low environmental impact• vibration, noise and ground displacement
Conventional excavator• providing easy and prompt mobilization• assuring safety＜ Downloaded from www.bosai-jp.org ＞

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BackgroundRiver bank on alluvial ground has higher potential of serious failure during andafter earthquake. The failure is caused not only by soft ground but byliquefaction.
Ground replacement or cement soil mixing may be preferred as suitablemeasure because soft soil bearing silt and clay refuse compaction procedure
like Sand compaction piles.
The Tohoku earthquake has realized that Tsunami attacks easily eroded thefoundation of sea dike. It is necessary to reinforce the foundation to prepend
the erosion. The foundation of river bank also need such reinforcement during
flood.
On the other hand, large piling machine usually utilized in deep soil mixing
faces to difficulties to apply to recovering work after failure of river dike andembankment after earthquake.

Exposition of the Solution
WILL Mixing has higher performance and productivity comparing with otherdeep soil mixing due to utilizing conventional excavator. Treatment depth
commonly ranges to 10m deep although the maximum depth is to 13m.

Remediation of foundation under river dike usually requires soil mixing to 10m
deep and prefers WILL Mixing because the project favours simple and prompt
preparation of working platform. High mixing performance produce reliablesoil mixing even in inhomogeneous and gravel-bearing ground. Also Will
Mixing provides various alignment including block treatment and latticetreatment.
Investigations about erosion of sea dike foundation demonstrates efficiency ofWILL Mixing at foundation of revetment. High mixing performance guarantees
uniform and hard soil mixing block as foundation.
Performance in accessibility is crucial to recovery work. WILL Mixing onconventional excavator assures short assembling and installation of soil
mixing even on slope and/or on uneven platform.

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Achievements of Examples＜ Downloaded from www.bosai-jp.org ＞

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Mitigation of the foundation of failed river bank to prevend liquefaction

Recovering work after failure of rail embankment due to erthquake

Stabilization of mining tail after earthquake

Lattice treatement against to liquefaction for facilities

Foundation of plant facilities in overseas project

Preventing of Tsunami erosion to foundation of sea dike

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Corporate ProfileSanshin Corporation
7F Yanagibashi First Building, 2-19-6 Yanagibashi, Taito-ku, Tokyo 111-0052, Japan Tel. : +81-3-5825-3704
 E-mail : sales@sanshin-corp.co.jp
 Website : http://www.sanshin-corp.co.jp/＜ Downloaded from www.bosai-jp.org ＞

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