| 摘要 |
PURPOSE:To improve the ground according to aimed shapes by estimating the dimension of improved ground from data on specific materials of ground being improved and data on specific materials of natural ground. CONSTITUTION:Data on specific material content of natural ground are put in a data input unit 6. While injecting a grout from the sides of the tip of a boring rod 1, the rod 1 is slowly pulled up to improve the ground. Slime produced then is flowed into a receiving trench 4, and data on specific material content of the slime are put in an analyzer 7. The signals of measured data are put in an arithmetic unit 8. In the unit 8, the dimension X of improved ground is calculated from data from a data input unit 6 and measured data of the analyzer 7 and displayed on a displayer 9. On the basis of the dimension X, the ground is improved to an aimed shape. |
