This paper describes a geotechnical characterization process involving laboratory testing, back-analysis using the convergence-confinement method, and as-built tunnel records for a tunnel that encountered squeezing conditions to develop geotechnical design parameters for one of these new tunnels. The ...
PROBLEM TO BE SOLVED: To provide a pillow comfortable for shoulder, neck, and head in which the head does not slide from the pillow and the head is stable, there is no gap between the shoulders and the pillow, and comfortable and good sleep can be obtained. ;SOLUTION: This pillow has ...