| 摘要 |
FIELD: hydraulic engineering. ^ SUBSTANCE: barrier comprises means formed as elongated liquid impermeable upper and lower walls connected at closed longitudinal barrier end opposite to opened one. Means may be moved between extended and collapsed positions, wherein lower wall is laid on ground. Upper wall in its collapsed position is located on lower wall and spaced a distance from lower wall after movement thereof to extended position to open fluid flow into barrier through opened barrier end. Closed barrier end blocks liquid passage past barrier. Installed between upper and lower walls is means for limiting barrier extension. Barrier in accordance to the first embodiment is of membrane type and includes means made as upper and lower walls connected at closed membrane means end opposite to opened one. Lower wall has upstream end laid on ground to support barrier. Membrane means is adapted to receive liquid through opened end when upper wall is spaced from lower one at opened membrane means end and moved to extended position. Thus, closed end of membrane means blocks flow of liquid contained in membrane member and upstream thereof, in downstream direction past membrane means. Installed between upper and lower walls is means for limiting membrane means extension. ^ EFFECT: improved transportation ability, reduced installation time. ^ 30 cl, 20 dwg |
