农业工程学报2012，Vol.28Issue(4)：54-59,6.DOI:10.3969/j.issn.1002-6819.2012.04.009
粉煤灰和聚丙烯酰胺固沙效果的风洞试验
Wind tunnel experimental study on sand-fixing effect of fly ash and polyacrylamide
摘要
Abstract
Searching for an effective and economical sand fixation measure has important significance in wind erosion control. Wind tunnel experiments were conducted to study the sand-fixing effect of fly ash at three different application rates (10%, 20% and 30%) and the intensifying action of polyacrylamide (PAM) at two different application rates (0.05% and 0.1%) on it on the basis of the optimum fly ash application rate. The results indicated that fly ash increased the threshold wind speed of the treated soil significantly, which was further increased by PAM slightly. The soil treated with 20% fly ash could most effectively withstand pure wind and sand-carrying wind with a wind speed of 8 m/s for 10 min respectively. Moderate wind erosion occurred after exposure to pure wind and sand-carrying wind with a wind speed of 14 m/s for 10 min respectively, and there was a decline in the wind erosion rate with the increase of fly ash application rate. The soil treated with 20% fly ash and PAM could effectively withstand sand-carrying wind with a wind speed of 14 m/s for 30 min. 20% fly ash application rate and 0.05% PAM application rate were recommended to realize effective and economical wind erosion protection.关键词
风洞/试验/侵蚀/沙土/粉煤灰/聚丙烯酰胺(PAM)/固沙Key words
wind tunnel/ experiments/ erosion/ sandy soil/ fly ash/ polyacrylamide (PAM)/ sand fixation引用本文复制引用
杨凯,唐泽军,赵智,封建章,郭平,丁涛..粉煤灰和聚丙烯酰胺固沙效果的风洞试验[J].农业工程学报,2012,28(4):54-59,6.基金项目
国土资源部公益基金(201011016-9) （201011016-9）
