2024 年 11 巻 3 号 p. 40-45
The CDM Association is working on the development of technologies for the use of deep mixing methods in order to create new demand, with a view to the effective use of deep mixing machinery, the maintenance of construction unit costs, and the transfer of technology. As part of the results, this paper presents two new applications. The first is a quaywall structure using the deep mixing method. In Japan, sheet pile, pier, and gravity quay structures are commonly used, and caissons are often used as the main body of gravity quaywalls. This is a technique for constructing quay walls using a single large solidified body produced by the deep mixing method as an alternative to gravity caissons. The second is a technique for strengthening coastal levees using deep mixing. In the 2011 Great East Japan Earthquake, a large tsunami overflowed coastal levees and the water flow destroyed them, and various countermeasure methods were proposed after the disaster. This technology can be used to construct a lattice of solidified bodies inside the levee, which can withstand earthquakes and tsunamis and maintain the top height of the levee.
