METHOD OF SUBTERRANEAN LAYING OF PIPE LINE IN SOFT GROUND Russian patent published in 1995 - IPC

FIELD: subterranean laying of pipe lines. SUBSTANCE: members of triangular chute which is triangular in section are laid along axis of route; than lengths of pipe lines are laid and secured on them, after which they are pressed by chain of weights moved inside the pipe length at vibratory action on ground of pipe line base. Ground is diluted under pipe line section being pressed due to supply of myxotropic solution from perforated flexible pipe of triangular section pulled in synchronism with weight and located under pipe line. Members of chute have triangular holes through which perforated pipe is passed. Used as myxotropic solution is solution of clay in water or solution of clay and cement in water. Vibratory action is applied directly in the pipe length. EFFECT: enhanced reliability. 4 cl, 4 dwg