Publication Date:
1986-11-01
Description:
The level to gently undulating ground on backfilled mined-out areas is referred to as reclaimed mine spoil. This paper deals with model footings for light structures placed on such soil. For the case considered, the spoil is dominated by a disaggregated clay shale. Settlement of the spoil arises from self-weight, an increase in overburden, and saturation. This last source takes place as the water table rises or when surface infiltration occurs. This latter cause is the source of potentially damaging settlement and is the focus of the research work. Four footings, each 1 × 1 m, were placed on a 1 m thick mat composed of either preloaded, compacted soil, compacted soil/flyash mixture, or compacted flyash. Each footing was loaded to 61 kPa. The settlement was small under this load but every footing settled intolerably when the soil below the footing was saturated. However, the results have merit. Further design consideration needs to be devoted to obviating the ingress of surface water. Key words: settlement, spoil, reclaimed land, model footings, slaking.
Print ISSN:
0008-3674
Electronic ISSN:
1208-6010
Topics:
Geosciences
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