METHOD FOR ERECTION OF UNDERGROUND PIPELINE AT CROSSING OF TECTONIC FRACTURES Russian patent published in 2009 - IPC F16L1/28 

FIELD: construction.

SUBSTANCE: invention is related to construction and may be used in underground installation of pipelines that cross zones of tectonic fractures. In method for erection of underground pipeline at crossing of tectonic fractures, trays used are represented by elastic closed shells. Shells are filled with air, are fixed on external side of pipeline and are connected via nipples to air duct with the possibility if air injection and pressure monitoring in it. Internal diametre of shell is accepted as equal to 0.95D, where D is external diametre of pipeline, m. Width of shell is accepted as equal to 0.5÷0.8D, m. Distance between neighboring shells is accepted as equal to 1.5÷3D, m. Shells are installed in pipeline in zone of tectonic fracture with overlapping of this zone by 1.5÷3 times along pipeline length.

EFFECT: application of this method for erection of underground pipeline at crossing of tectonic fractures provides for improved efficiency; lower labour intensiveness of installation; lower labour intensiveness of maintenance.

1 cl, 2 dwg