METHOD OF PREVENTION OF CRACKING CORROSION OF PIPE LINE UNDER ACTION OF STRESSES (VERSIONS) Russian patent published in 2005 - IPC

FIELD: construction engineering; erection and operation of pipe lines.

SUBSTANCE: proposed method includes detection of drying water course intersected by pipe lines and determination of its direction and boundaries within pipe line route. Trench is dug over entire width of drying water course; depth of this trench exceeds depth of lower generatrix of pipe line. Wall of trench on side of pipe line and its bottom are covered with watertight coat; water-permeable coats are laid on opposite wall and on end walls. Water receiver and water conduit are made on section of trench where its height is minimum; water conduit is laid under pipe line. According to another version, trench is dug over entire width of surface drying water course before and in parallel with pipe line; depth of trench exceeds depth of lower generatrix of pipe line; then, watertight shield is laid on trench wall on side of pipe line; height of this shield exceeds depth of trench by at least 0.3 m; water receiver and water conduit connected with it are made in section of trench at minimum height; water conduit is laid under pipe line; trench is filled with water-permeable material beyond water receiver.

EFFECT: enhanced reliability of pipe line.

8 cl, 3 dwg