CAJ | 학술논문

以大同盆地重度苏打盐化土为研究对象，采用土柱模拟的方法，研究火电厂烟气脱硫石膏3种用量（15、30、60 t·hm-2）下土壤饱和导水率的变化规律，分析了脱硫石膏不同施用量和土壤饱和导水率的关系，旨在为大同盆地苏打盐化土改良提供理论支持和借鉴。结果表明：脱硫石膏对3个土层的土壤的饱和导水率均有提高作用，其中表层土壤（0耀10 cm）提高的幅度最大，其次是10~20 cm，20耀40 cm底层土壤提高幅度最小；脱硫石膏对表层（0耀10 cm）土壤的饱和导水率提高速率以及效率最高，随着土层深度的增加，脱硫石膏对土壤饱和导水率的提高速率及效率逐渐降低；脱硫石膏的经济用量应为30 t·hm-2；重度苏打盐化土饱和导水率与脱硫石膏施用量无显著正相关关系（P>0.05）。
이대동분지중도소타염화토위연구대상，채용토주모의적방법，연구화전엄연기탈류석고3충용량（15、30、60 t·hm-2）하토양포화도수솔적변화규률，분석료탈류석고불동시용량화토양포화도수솔적관계，지재위대동분지소타염화토개량제공이론지지화차감。결과표명：탈류석고대3개토층적토양적포화도수솔균유제고작용，기중표층토양（0요10 cm）제고적폭도최대，기차시10~20 cm，20요40 cm저층토양제고폭도최소；탈류석고대표층（0요10 cm）토양적포화도수솔제고속솔이급효솔최고，수착토층심도적증가，탈류석고대토양포화도수솔적제고속솔급효솔축점강저；탈류석고적경제용량응위30 t·hm-2；중도소타염화토포화도수솔여탈류석고시용량무현저정상관관계（P>0.05）。
In this paper, we applied soil column simulation method to study the effect of power plant flue gas desulfurization gypsum on satu-rated hydraulic conductivity of heavy soda-saline soil in the Datong basin of Shanxi Province. The amount of desulfurization gypsum was 15, 30 t·hm-2 and 60 t·hm-2. The results showed that different amount of desulphurization gypsum all could significantly improve the saturated hydraulic conductivity of heavy soda-saline soil;especially, the increase of saturated hydraulic conductivity in different soil layers appeared in a descending order as 0~10 cm>10~20 cm>20~40 cm;further, with the depth of the soil layer the rate and efficiency of saturated hydraulic conductivity reduced gradually. There was no significant correlation between the saturated hydraulic conductivity and the application amount of desulphurization gypsum(P>0.05). Considering the economic perspective, the best application amount of desulphurization gypsum was 30 t·hm-2.