METHOD OF LAYING PIPE LINE IN MARSH-RIDDEN REGION Russian patent published in 2002 - IPC

FIELD: construction engineering; erection of pipe lines in marsh-ridden region. SUBSTANCE: in underground laying of pipe line in sections having loose soil initial elevation is imparted by curves of turn pinching it at boundaries of marsh-ridden area relative to its rectilinear position; height of elevation is equal to sagging under action of operational loads and actions. Top of pipe line in plan is positioned in center of run through mash-ridden area; in case of sagging and horizontal shifts, pipe line works as compensator. EFFECT: enhanced reliability of pipe line due to reduction of its stressed state because of varying sagging in layer of peat. 2 dwg