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测量土壤水分特征曲线的复合传感器设计(Design of Dual-sensor for Measuring Soil Water Characteristic Curve)
土壤 含水率 水吸力
2009/8/11
为了直接获取土壤水特征曲线,在一种商品化微型张力计的基础上,设计了一种同步测量土壤水吸力与容积含水率的复合传感器。将张力计中的一段金属保护套管作为天线,利用其辐射阻抗随着土壤含水率变化的规律来测量土壤容积含水率。在实验室环境下,利用3种不同质地土样(砂土、砂壤土、粘壤土)对复合传感器进行了试验,并与经典土壤水特征曲线测量方法(压力锅法结合砂箱法)获得的数据进行了比较。结果表明,复合传感器在3种土壤...
Relationship Between Shear Strength and Soil Water Characteristic Curve of an Unsaturated Granitic Residual Soil
Matric suction shear strength
2009/3/19
Shear strength parameters are crucial for stability analyses of slopes against slope failures and landslides. The three shear strength parameters that are required to define a failure envelope of an u...