FIELD: pipelines.
SUBSTANCE: invention relates to pipelines of networks of engineering and technical support and main pipelines of liquid and gaseous hydrocarbons and can be used in development of trenches for laying said pipelines in areas with weak and flooded soils. Device for fixing walls of trenches developed by rotary trencher when laying pipelines on weak and flooded soils comprises frame with rotor, fixed on it roller conveyor and hopper, shields of fastening, connected in pairs by movable links, pressure roller for pushing into the ground the shields of fastening coming into the trench.
EFFECT: higher efficiency of trenching.
1 cl, 9 dwg
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