METHOD FOR TRENCHLESS LAYING OF UNDERGROUND PIPELINE Russian patent published in 2015 - IPC F16L1/28 F16L55/18 

FIELD: transport.

SUBSTANCE: invention relates to pipeline transport and can be used for trenchless laying of underground pipelines. The method includes the arrangement of a well along a pre-set line of drilling and a pipeline laying. Contact efforts are transmitted to a drilling device through the pipeline implemented from the combined round ferroconcrete rings which are consistently tightly connected during the well construction and have in an internal cavity lodgments for the placement of a working pipeline on them. Drilling and laying operations are performed simultaneously. After the installation in the well of the assembly ring being the first towards the direction of motion the working pipeline is placed on the lodgments and moved along with pushing of the pipeline from the assembly rings. The annular space between the well wall and the pipeline is filled with a boring suspension through high pressure nozzles on the cutting tool of the drilling device. Sludge is removed along at least two flexible sleeves connected to the drilling device and the device for the reception and processing of the boring suspension.

EFFECT: increase of the productivity of operations, protection from damages of the insulating coating of the pipeline during its laying, possibility of the repeated replacement of the pipeline.

2 dwg