PIPE LINE WEIGHTING MATERIAL AND METHOD OF ITS BALLASTING Russian patent published in 2002 - IPC

FIELD: construction engineering, erection and repair of main pipe lines in boggy ground and water-bearing ground; shore areas of water obstacles. SUBSTANCE: saddle-shaped U-shaped box of weighting material has walls inclined relative to vertical axis; it is provided with belt and mounting hinges in upper portion of these walls. Saddle-shaped part of box is engageable with inner flat surfaces of side wells. Hinged valves are secured to outer side surfaces of lateral wells. Pipe line is laid in dug trench and weighting material is placed on them; upper edges of valves are freed and are hinged to bottom of trench. Weighting materials are fixed on pipe line by pouring soil on valves. Boxes are filled with ballast and trench is filled with soil. EFFECT: enhanced reliability. 5 cl, 3 dwg