Abstract
Tunnel face observation system is developed and is applied to a construction site. The system is reduced operation time to examine tunnel face observation and to draw geological image of tunnel face. The system is developed in a personal computer. Hardware consists of a personal computer, a image scanner and a color printer. The system consists of two programs. One is that to draw a sketch of tunnel face, maps of geological image and a tunnel geological longitudinal section, which is made by Visual Basic. The other is that to prepare a daily documentation of tunnel face and to output this documentation, which is made by Microsoft Access.
