DEVICE FOR SECURING PIPE LINE AGAINST FLOATING Russian patent published in 1997 - IPC

FIELD: laying of pipe lines in flooded ground. SUBSTANCE: device has load-bearing strake 2 made in form of flat folded envelope 1, anchors 4 with expansion chambers 5 and knives 6. Envelope 1 is provided with circular corrugations 7 along length of chambers 6. Envelope 1 is made from glass fabric; combs 9 and knives 6 are impregnated with polymer binder. Anchors 4 are embedded in ground till tension appears in load-bearing strake 2 which rests on pipe line 3 through antifriction cover plate 10. Filler 7 is fed under pressure to expansion chambers 5; as a result, envelope 1 expands in area of anchor 4, thus separating ground and forming packed zone. EFFECT: enhanced reliability. 2 cl, 2 dwg