| 摘要 |
A displaceable load supporting cell for supporting a load. The cell comprises at least one compacted layer of particulate material compacted under a pressure of at least 800 kPa. The cell has a height less than its minimum lateral dimension. The cell includes retaining means for retaining the particulate material in the layer, and restraining means associated with the layer to restrain lateral displacement of the particulate material under load. A method of forming the load supporting cell and a support pillar. The pillar comprises a stack of layers of particulate material compacted under a pressure of at least 800 kPa, and each layer having restraining means associated therewith to restrain lateral displacement of the particulate material under load, each layer having a height less than its minimum lateral dimension.
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