不同煤矸石厚度及位置对土壤水分入渗过程的影响 | |
其他题名 | Effect of Thickness and Location of Coal Gangue on |
党宏宇; 邵明安; 陈洪松; 周蓓蓓 | |
2012 | |
发表期刊 | 水土保持学报 |
卷号 | 26期号:03页码:62-66 |
摘要 | 矿区土壤煤矸石的存在能够改变土壤的某些物理特性,并影响土壤水分入渗过程。采用一维定水头垂直入渗室内土柱模拟试验,对5种不同煤矸石厚度(0,4,8,12,16cm)及3个位置(上层、中层、下层)的土壤水分入渗过程进行研究。结果表明,煤矸石覆盖土壤表层有利于土壤水分入渗,土壤水分累积入渗量和稳定入渗速率随着煤矸石厚度(0~16cm)的增加呈现增大的趋势,但煤矸石厚度较大(8,12,16cm)或较小(0,4,8cm)时土壤稳定入渗速率差异不显著。当煤矸石位于中层时,煤矸石的存在抑制了土壤水分入渗过程,土壤水分稳定入渗速率随着煤矸石厚度(4~16cm)的增加而变大,但煤矸石厚度为12,16cm时土壤稳定入渗速率差异不显著。煤矸石位于下层时,煤矸石厚度对土壤水分入渗过程影响较小。不同煤矸石厚度情况下,煤矸石位于上层时累积入渗量最大,而位于中层时累积入渗量最小。与Philip方程相比,Kostiakov入渗模型可以更好地反映含有煤矸石土壤的累积入渗量变化过程。; The presence of coal gangue can change some soil physical properties of soil and has an important impact on water infiltration in soils in mining region.Laboratory simulation was designed to study the process of water infiltration by one-dimensional fixed-head infiltration method with five different thickness of coal gangue(0,4,8,12,16cm)and three different positions(upper,middle and lower).The results indicated that when the coal gangue was covered in the soil surface(top position),it could be beneficial for the soil infiltration processes.The cumulative infiltration and the stable infiltration rate increased with the increase in thicknesses of coal gangue(0~16cm),but the stable infiltration rate for larger(8,12,16cm)or smaller(0, 4,8cm)thickness had no significant difference.When the coal gangue was located in the middle position, the soil infiltration processes were suppressed by the coal gangue.The stable infiltration rate increased with increase in the thicknesses of coal gangue(4~16cm),but it had no significant difference for thickness of 12, 16cm.When the coal gangue was located in the lower position,it had little effect on the soil infiltration processes.Besides,the cumulative infiltration capacity was the biggest when the coal gangue was at the upper position with the same thickness and was the smallest when the coal gangue was in the middle position with the same thickness.Water infiltration processes in soils containing the coal gangue could be fitted better by Kostiakov formula than Philip formula. |
关键词 | 累积入渗量 Umulative infiltration 煤矸石厚度 Thickness of coal gangue 煤矸石位置 Location of coal gangue 土壤水分 Soil moisture 入渗 Infiltration |
语种 | 中文 |
文献类型 | 期刊论文 |
条目标识符 | sbir.nwafu.edu.cn/handle/361005/5432 |
专题 | 水保所知识产出(1956---) |
推荐引用方式 GB/T 7714 | 党宏宇,邵明安,陈洪松,等. 不同煤矸石厚度及位置对土壤水分入渗过程的影响[J]. 水土保持学报,2012,26(03):62-66. |
APA | 党宏宇,邵明安,陈洪松,&周蓓蓓.(2012).不同煤矸石厚度及位置对土壤水分入渗过程的影响.水土保持学报,26(03),62-66. |
MLA | 党宏宇,et al."不同煤矸石厚度及位置对土壤水分入渗过程的影响".水土保持学报 26.03(2012):62-66. |
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