| 摘要 |
<p>Method for controlling the path of a shield tunneller equipped with hydraulic displacement control jacks (3), characterised in that, with these jacks being distributed in at least three groups of jacks (6A,6B,6C), the instantaneous theoretical values of the fluid flows to be applied to each of these groups are determined continuously (40) from the curvature characteristics of a nominal path of overall speed of advance, and the instantaneous flows, the values of which correspond to the theoretical values, are supplied to these groups (7-26-27-28). …<IMAGE>… </p> |
