醋酸乙烯酯类固沙剂固沙效果的风洞实验  

Wind Tunnel Test on Effectiveness of Vinyl Acetate Sand-fixing Agents on Sand Fixation

作　　者：冯筱[1,2] 李生宇[1] 徐新文[1] 王海峰[1] 马学喜 袁鑫鑫[1,2] 俞祥祥 刘白玲[3] 

机构地区：[1]中国科学院新疆生态与地理研究所,乌鲁木齐830011 [2]中国科学院大学,北京100049 [3]中国科学院成都有机化学研究所,成都610041

出　　处：《水土保持学报》2015年第5期61-65,共5页Journal of Soil and Water Conservation

基　　金：新疆维吾尔自治区重大科技专项(201130106-3)

摘　　要：通过室内风洞模拟实验,研究了不同净风、挟沙风风速和沙面坡度条件下3种醋酸乙烯酯类固沙剂（WGS-3、WGS-4和CS-204）不同喷洒浓度时的土壤风蚀控制效果。研究结果表明：3种固沙剂均具有较好的抗风蚀能力,相同条件下,固沙剂CS-204的抗风蚀性能稍强于WGS-4,WGS-3的抗风蚀性能相对较差;与净风相比,挟沙风更易使喷施固沙剂后的沙面产生风蚀;挟沙风条件下,沙面累积风蚀量随固沙剂使用量的增加而减小,随沙面坡度的增加而增大;从经济意义上考虑,建议固沙剂WGS-3喷洒浓度稍高于3.0%,WGS-4和CS-204使用浓度为2.0%~3.0%,且喷洒量为1L/m2,能有效固沙。Wind tunnel test was conducted to evaluate the effect of soil wind erosion control after the soil was treated with 3kinds of vinyl acetate sand-fixing agents（WGS-3,WGS-4and CS-204）at different application rates under different environmental conditions（different pure wind velocities,different sand-carrying wind velocities and slopes of different gradients）.The results indicated that：The 3sand-fixing agents all worked well in preventing soil wind erosion,and under the same condition,the wind erosion-resistance performance of CS-204 was slightly better than that of WGS-4.However,WGS-3showed the poorest performance among them.What＇s more,the sand-carrying wind made it easier for the treated soil to be blown away than the pure wind did.There was a decline in the accumulative wind erosion mass with the increasing application amount of sand-fixing agents,but an increase with the increase of slope gradient under the sand-carrying wind condition.It is suggested from the perspective of economy that,in order to fix sand effectively,the application rate of WGS-3should be a little more than 3.0%,while that of both WGS-4and CS-204 should be 2.0%~3.0%,along with their spraying amount of 1L/m2.

关 键 词：风洞实验 固沙剂 风蚀量 

分 类 号：S424[农业科学—植物保护]