Title: Moisture Movement of Stratified Soil in Reclamation Land of Fly Ash Disposal Sites
Abstract: Soil column experiments were conducted to study the moisture movement characteristics in soil of reclamation land in fly ash disposal sites with different thickness of covering soil. Based on the meteorological data of the research area, the annual changes of moisture content in the reclaimed soil profile were simulated to explore moisture holding capacity of the particular soil profile under extreme weather conditions and provide theoretical proofs and technical supports for field water management of the reclamation soils when plants are to be cultivatal. The results showed that under low groundwater table condition(-300 cm), the difference of moisture content at various monitoring sections of the reclaimed soil profiles between dry and wet year was about 0.10 cm3/ cm3. The difference in surface soil was bigger when the water content of surface soil was below 0.20 cm3/ cm3in dry years. The water content of surface soil was maintained at 0.20~0.30 cm3/ cm3in wet years and could be higher than 0.30 cm3/ cm3during rainy season. Under high groundwater table(-115 cm) condition, water content in fly ash layer remained at nearly saturated state for a long time owing to strong moisture sorption ability of fly ash. The water content of surface soil also exceeded that of sandy loam, even in dry years.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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Cited By Count: 1
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