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Method for calculating water infiltration depth of unsaturated loess
The invention discloses a method for calculating the water infiltration depth of unsaturated loess. The method comprises the following steps: 1, collecting an undisturbed soil sample; 2, measuring a contact angle of a soil sample in the undisturbed soil sample; 3, measuring the pore size of the soil sample which does not disturb the soil sample; 4, measuring capillary resistance which does not disturb capillary pores of the soil sample in the soil sample; 5, measuring the surface water head pressure of the immersed area; and 6, calculating the water infiltration depth of the unsaturated loess.According to the invention, the standard Jurin criterion is corrected; capillary resistance F in capillary pores of the soil sample in the undisturbed soil sample is collected; the influence of the surface water head pressure of the immersion area on the downward movement of the unsaturated soil moisture in the loess area is considered; the invention provides a new infiltration formula suitable for unsaturated soil, so that the measurement result is ideal, the undisturbed soil sample is measured indoors by collecting the undisturbed soil sample in the water immersion area, the consumed time is short, the cost is low, and the deviation between the obtained result and the actual situation is small.
本发明公开了一种非饱和黄土水分入渗深度计算方法，包括步骤：一、采集不扰动土样；二、测量不扰动土样中土样的接触角；三、测量不扰动土样的土样的孔径大小；四、测量不扰动土样中土样的毛细孔隙的毛管阻力；五、测量浸水区域地表水头压力；六、计算非饱和黄土水分入渗深度。本发明通过对标准的Jurin准则进行修正，采集不扰动土样中土样毛细孔隙中的毛管阻力F，并考虑浸水区域地表水头压力对黄土地区非饱和土水分向下移动的影响，提出了一种新的、适用于非饱和土的入渗公式，使得测定结果较为理想，通过采集浸水区域的原状土样，将不扰动土样放在室内测量，耗时少，费用成本低，所得结果与实际情况偏差小。
Method for calculating water infiltration depth of unsaturated loess
The invention discloses a method for calculating the water infiltration depth of unsaturated loess. The method comprises the following steps: 1, collecting an undisturbed soil sample; 2, measuring a contact angle of a soil sample in the undisturbed soil sample; 3, measuring the pore size of the soil sample which does not disturb the soil sample; 4, measuring capillary resistance which does not disturb capillary pores of the soil sample in the soil sample; 5, measuring the surface water head pressure of the immersed area; and 6, calculating the water infiltration depth of the unsaturated loess.According to the invention, the standard Jurin criterion is corrected; capillary resistance F in capillary pores of the soil sample in the undisturbed soil sample is collected; the influence of the surface water head pressure of the immersion area on the downward movement of the unsaturated soil moisture in the loess area is considered; the invention provides a new infiltration formula suitable for unsaturated soil, so that the measurement result is ideal, the undisturbed soil sample is measured indoors by collecting the undisturbed soil sample in the water immersion area, the consumed time is short, the cost is low, and the deviation between the obtained result and the actual situation is small.
本发明公开了一种非饱和黄土水分入渗深度计算方法，包括步骤：一、采集不扰动土样；二、测量不扰动土样中土样的接触角；三、测量不扰动土样的土样的孔径大小；四、测量不扰动土样中土样的毛细孔隙的毛管阻力；五、测量浸水区域地表水头压力；六、计算非饱和黄土水分入渗深度。本发明通过对标准的Jurin准则进行修正，采集不扰动土样中土样毛细孔隙中的毛管阻力F，并考虑浸水区域地表水头压力对黄土地区非饱和土水分向下移动的影响，提出了一种新的、适用于非饱和土的入渗公式，使得测定结果较为理想，通过采集浸水区域的原状土样，将不扰动土样放在室内测量，耗时少，费用成本低，所得结果与实际情况偏差小。
Method for calculating water infiltration depth of unsaturated loess
一种非饱和黄土水分入渗深度计算方法
JING YANLIN (author) / HU YONGHUA (author) / WU CHAOYI (author) / WANG CHUNGANG (author) / ZHANG ZHIQUAN (author) / GUAN KAI (author) / WEN XIN (author) / HUANG WENFENG (author) / LI JIERU (author)
2020-06-02
Patent
Electronic Resource
Chinese
Computation for Water Infiltration of Unsaturated Loess
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