瑞浪超深地層研究所におけるグラウト技術の開発及び高度化,2(委託研究)

Development and enhancement of grouting technologies in the Mizunami Underground Research Laboratory, 2 (Contract research)

延藤 遵*; 見掛 信一郎 

Nobuto, Jun*; Mikake, Shinichiro

坑道掘削時に遭遇する水みちに対する対策工法であるグラウトについて、グラウトに関する止水性能を確認し、さらに亀裂入り口におけるグラウト材料の浸透特性について実験等を実施した研究内容について報告する。

Research items are as follows: study on viscosity of high viscous grouting material, study of clogging phenomenon of suspension type grouting materials under high injection pressure, literature review on infiltration characteristics of grouting materials to point out research issues to be solved and summary of this research works to date. Among these, in high-pressure clogging test, prototype test equipment developed last year was improved completely to simulate grout flow accurately in actual grouting scene.