CAJ | 학술논문

以广西白色强膨胀土为研究对象，对有、无植被覆盖和农膜覆盖的膨胀土分别进行30 d 持续蒸发试验，研究持续蒸发过程对膨胀土湿热和裂隙拓展特性的影响。结果表明，无植被覆盖时表层土体脱湿量及脱湿速率分别为7.38%和0.17%/d，植被覆盖时分别为5.29%和0.07%/d，显然植被覆盖的脱湿量和脱湿速率均小于无植被覆盖的，而农膜覆盖土体蒸发受到遏制，水分无散失；无植被覆盖和农膜覆盖土体平均温度变化分别是7.36℃和9.72℃，比植被覆盖的2.03℃大5～8℃，可见植被覆盖降低了土体温度变化幅度；无植被覆盖土体裂隙深度达32 cm，与湿热影响深度28 cm 较接近；植被覆盖和农膜覆盖土体平面及竖向均无出现明显裂隙，植被覆盖和蒸发受到遏制的状态可阻止土体裂隙开展。
이엄서백색강팽창토위연구대상，대유、무식피복개화농막복개적팽창토분별진행30 d 지속증발시험，연구지속증발과정대팽창토습열화렬극탁전특성적영향。결과표명，무식피복개시표층토체탈습량급탈습속솔분별위7.38%화0.17%/d，식피복개시분별위5.29%화0.07%/d，현연식피복개적탈습량화탈습속솔균소우무식피복개적，이농막복개토체증발수도알제，수분무산실；무식피복개화농막복개토체평균온도변화분별시7.36℃화9.72℃，비식피복개적2.03℃대5～8℃，가견식피복개강저료토체온도변화폭도；무식피복개토체렬극심도체32 cm，여습열영향심도28 cm 교접근；식피복개화농막복개토체평면급수향균무출현명현렬극，식피복개화증발수도알제적상태가조지토체렬극개전。
Talking the strong expansive soil of Guangxi as research object. 30 days evaporation experiment was respectively carried out for expansive soil with on without vegetation cover and under plastic sheeting cover, to explore the influence of continuous evaporation process on moisture-heat behavior and fissures development. The results show that without vegetation cover, the surface soil amount and rate of volumetric water content changes respectively are 7.38% and 0.17%/d; with vegetation cover, which are respectively 5.29% and 0.07%/d; apparently under vegetation cover, whose dehydration content and drying rate were less than that of without vegetation cover. For plastic sheeting cover, expansive soil evaporation is curbed and no water loss. Without no vegetation and plastic sheeting cover, the average temperature changes of expansive soil are 7.36 ℃,9.72 ℃ respectively, which is 5-8 ℃ higher than that with vegetation cover 2.03℃; obviously, the vegetation cover reduces expansive soil temperature variation. Without vegetation cover, expansive soil fissure depth is up to 32 cm, which is closer to 28 cm influence depth of moisture-heat. Under vegetation and plastic sheeting cover, no apparent fissure carried out in the plane and vertical; vegetation cover and the state of evaporation curbed can prevent expansive soil fissure developing.