| 摘要 |
The floating cover has a floating grid anchored to the perimeter walls of the reservoir, and floats over the liquid level inside the reservoir. The floating grid comprises a flexible keel member and an array of flexible buoyant beams affixed to the keel member. A flexible impermeable membrane is affixed to the perimeter wall and is loosely laid over the floating grid. An array of flexible weight lines is anchored to the perimeter walls and is loosely laid over the impermeable membrane. Each weight line is laid at about halfway between an adjacent pair of buoyant beams. The floating grid, the impermeable membrane and the array of weight lines constitute three separate layers that are movable relative to each other without generating destructive stress in the impermeable membrane.
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