| 摘要 |
FIELD: pipeline engineering. ^ SUBSTANCE: method comprises stripping the pipeline to define pits of specified depth and length below it, trenching under the pipeline, removing soil, and repairing damaged sections of the pipeline. The pits are filled with loose material. A minimum possible stress gradient along the sections is provided. ^ EFFECT: enhanced quality and safety of repairing. ^ 3 cl, 4 dwg |
