| 摘要 |
<p>The invention relates to a method for laying and protecting an underground metal pipe used to carry fluid, in which: the pipe (1) is placed in a metal sleeve (2); the annular space (3) separating the pipe from the sleeve is closed off using a plugging ring (12, 13) at each longitudinal end of the sleeve; the annular space is filled with a filler material. The method is characterized in that: use is made, by way of filler material, of a water-based slurry (6) comprising water and, per 900 litres of water, 85 to 105 kilograms of a blast furnace slag, 8 to 13 kilograms of Portland clinker and 120 to 160 kilograms of bentonite; and the pipe is connected to an electric circuit comprising a cathodic protection current take-off or a sacrificial anode.</p> |
