FIELD: construction engineering; erection of surface pipe lines in soft ground. SUBSTANCE: pipe line placed in soft envelope is laid on water passing sleds which re pulled through soft ground and soft envelope is filled with hydraulic filling. Description of water passing sleds is given in invention which gives recommendations for protection of water passages in case of freezing of water in them. EFFECT: preservation of hydrological conditions of ground; increased rate of laying pipe lines. 3 cl, 3 dwg
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