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膨胀性阻水层对煤矸石山水分入渗的影响
引用本文:魏忠义,王萍,王秋兵.膨胀性阻水层对煤矸石山水分入渗的影响[J].水土保持学报,2010,24(2).
作者姓名:魏忠义  王萍  王秋兵
作者单位:沈阳农业大学,土地与环境学院,沈阳,110866
基金项目:辽宁省教育厅科技创新团队项目(2006T120); 辽宁省自然科学基金项目(2040520)
摘    要:基于煤矸石山复垦的生态和环境目标的综合考虑,提出在表层合适深度设置膨胀性阻水层的设想,并进行室内积水条件下煤矸石柱体水分入渗模拟试验。试验表明,各试验处理效果显著,各处理阻水层开始阻水时间均为3min,入渗水量随着阻水剂用量的增加大幅减少,稳渗时间随阻水剂用量增加及颗粒增大而增加;对照处理在15min达到稳定入渗,稳渗率4.7mm/min;阻水剂用量0.4,0.8,1.2g的处理分别在17,22,25min达到稳定入渗,稳渗率分别为3.5,1.1,0.4mm/min;小颗粒、中颗粒和大颗粒阻水剂(0.8g)的处理分别在17,19,22min达到稳定入渗,稳渗率分别为3.8,2.5,1.1mm/min。试验煤矸石样品Cd含量超过土壤环境质量2级标准,柱状30min淋滤试验水样中Cd、Pb浓度较高,略高于地表水及地下水环境质量1类标准。研究表明,设置膨胀性阻水层对柱体入渗过程影响显著,可以有效控制煤矸石山地表产流和入渗的比例,达到既满足植物需水又避免雨水深层淋滤的目的。

关 键 词:煤矸石  膨胀性阻水层  入渗  淋滤  重金属污染  

Effect of Expansive Water-resisting Layer on Water Infiltration of Coal Waste
WEI Zhong-yi,WANG Ping,WANG Qiu-bing.Effect of Expansive Water-resisting Layer on Water Infiltration of Coal Waste[J].Journal of Soil and Water Conservation,2010,24(2).
Authors:WEI Zhong-yi  WANG Ping  WANG Qiu-bing
Institution:WEI Zhong-yi,WANG Ping,WANG Qiu-bing (College of L, , Environment,Shenyang Agriculture University,Shenyang 110866)
Abstract:Based on the ecological and environmental objectives in coal waste dump reclamation,establishing a expansive water-resisting layer in appropriate depth in the surface layer of coal waste dump was put forward,and the indoor simulated experiment with leaching-column in ponded water infiltration was designed.The result indicated that the treatments are effective,the working start times of water-resisting layer are all at 3 min;The more the water-resisting material used and the larger particle in size of water-...
Keywords:coal waste  expansive water-resisting layer  infiltration  leaching  heavy metal pollution  
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