| 李援农,费良军.土壤空气压力影响下的非饱和入渗格林-安姆特模型[J].水利学报,2005,36(6):0733-0736 |
| 土壤空气压力影响下的非饱和入渗格林-安姆特模型 |
| Green-Ampt model for unsaturated infiltration affected by air pressure entrapped in soil |
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| DOI： |
| 中文关键词: 自由入渗 恒定土壤空气压力入渗 禁锢土壤空气压力 格林-安姆特模型 |
| 英文关键词: infiltration air entrapped in soil experimental study Green-Ampt model |
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| 中文摘要: |
| 利用自制的入渗仪测定了土壤入渗过程中被禁锢的土壤空气压力大小及变化以研究禁锢土壤空气压力对非饱和土壤入渗水流的阻碍作用。通过自由入渗与恒定土壤空气压力入渗试验结果对比得出，研究入渗问题必须考虑禁锢土壤空气压力的影响作用。本文利用自由入渗试验、恒定土壤空气压力入渗试验和土壤水力性能试验结果，给出了禁锢土壤空气压力影响下的格林-安姆特模型。 |
| 英文摘要: |
| The magnitude and variation of air pressure entrapped in soil in the course of infiltration are measured by an installation developed by the author to investigate the resistance effect of air. The experiment for comparing the infiltration affected by entrapped air with free filtration was carried out. It is found that the effect of air pressure is not negligible. On the basis of experimental result, the Green-Ampt model for unsaturated infiltration affected by entrapped air in soil is established. |
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