| 摘要 |
FIELD: machine building. ^ SUBSTANCE: method comprises defining concentrated deformations on length l0 along pipeline axis between boundaries of crossed section and maximum pipeline deflection on preset position on said length in direction of enclosing strata maximum effects: possible deflection f1 from strata deformations conditions and tolerable deflection f2 from pipeline strength. Then trench is excavated with axis in plan aligned with pipeline axis to lay pipeline and fill trench with soil/ In case deflection f1 exceeds f2, pipeline is provided with two compensation lengths. Every length, within limits of preset lengths l1 and l2, covers crossed section boundary while, when combined, they increase length of deflected pipeline from l0 to design magnitude lp. Combined operation of said compensation sections allows pipeline deflection at crossed section center of a=f1-f2 with obeyance of pipeline strength condition over pipeline entire deflected design length lp. Compensation section is equipped with deformable strap fitted to pipeline on side opposite maximum effects of enclosing strata. ^ EFFECT: expanded operating performances. ^ 11 cl, 6 dwg |
