32 results about "Interflow" patented technology

The invention discloses a method for measuring interflow in forest soil, and belongs to the field of forest soil ecological study. The method is characterized in that the system utilizes the soil profile and consists of an interflow flow collecting groove, a flow guide pipe and an interflow collector, wherein the flow collecting groove is embedded into a soil body in different layers of the soil profile, the interflow is collected, and the interflow is guided into the collector for completing the collection of the interflow. The method has the advantages that the structure is compact, the system is reasonable, the method is simple, the realization is easy, a scientific and reasonable small-dimension measuring system is provided for the study of the forest soil hydrology process, the moisture and nutrient balance and moving and the like, and greater popularization and application values are realized in the fields of forest soil ecology, forest hydrology, water and soil conservation and the like.

The invention discloses a system for measuring flow speed and flow of slope surface interflow. The system for measuring the flow speed and flow of slope surface interflow comprises a tracer agent feed facility arranged at the upper end of a slope surface runoff plot and an interflow collecting facility arranged at the lower end of the slope surface runoff plot. The invention further discloses the method for measuring the flow speed and flow of slope surface interflow through the system for measuring the flow speed and flow of slope surface interflow. The method comprises the steps that the tracer agent feed facility is arranged on the inner side of the boundary at the upper end of the slope surface runoff plot, a section with the width consistent with that of the plot and the depth reaching a parent material layer is dug in the lower end of the slope surface runoff plot, then the interflow collecting facility is mounted in the dug section, and the interflow of the whole runoff plot is collected and measured; the flow speed of the interflow is calculated according to the time from feeding of a tracer agent to first appearing in the collecting facility; the flow speed of slope interflow and the dynamic law of the slope surface interflow are revealed.

The invention discloses a miniature soil hydrologic monitoring system suitable for a high-heterogeneity karst sloping field. The miniature soil hydrologic monitoring system comprises a miniature region, a miniature interflow collecting system and a miniature direct surface runoff collecting tank. The miniature interflow collecting system is inserted below a sloping soil profile rock-soil interface below the sloping field miniature region for collecting interflow above the rock-soil interface; the miniature direct surface runoff collecting tank is inserted at the position of a sloping soil profile, which is close to the earth's surface for collecting direct surface runoff. The bottom surface of angle steel of the miniature direct surface runoff collecting tank is in contact with the top surfaces of an aluminum-plastic panel and a thin aluminum panel in the miniature interflow collecting system, and the miniature direct surface runoff collecting tank and the miniature sloping field region are fixed together through screws at two sides. According to the miniature soil hydrologic monitoring system, direct surface runoff and interflow of the miniature sloping field region can be simultaneously measured, the difficulty that the soil hydrologic process is monitored on the high-heterogeneity karst sloping field is solved, and a platform is provided for researches on aspects of the hydrologic process, the soil and nutrient loss principle, the karst process and the plant water adaptive mechanism in such karst sloping field.

The invention discloses a stratified reservoir thermal density flow tracing method mainly comprising the following steps: drawing landform and grid and inputting information into computer software, selecting a basic equation needed by the flowing incoming flow, and selecting a turbulent model and parameters complying with calculation requirements; setting physical and thermodynamics properties of the incoming flow body according to the real conditions of the incoming flow body; adding a tracking agent in the computer software, and calculating a tracking agent motion convection dispersion equation and parameters thereof; setting the incoming flow tracing agent concentration A; selecting B% of the incoming flow tracking agent concentration as the contour border of the thermal interflow when the calculation is over, thus clearly displaying shape features like the interflow specific thickness and the central line specific position. The advantages are that the novel method can clearly display thermal interflow motion conditions including shape, thickness and central position, thus ensuring calculating accuracy.

The invention discloses a slope-varying type interflow three-dimensional simulation monitoring runoff test flume. The runoff test flume comprises a base, wherein a front movable support rod, a runoff groove fixing support rod and a slope adjusting spiral support rod are sequentially arranged on the base, and a group of runoff grooves are formed in the front movable support rod, the runoff groove fixing support rod and the slope adjusting spiral support rod. The slope-varying type interflow three-dimensional simulation monitoring runoff test flume can monitor the flow velocity of interflows in different depths and also can monitor the flow of the interflows in different depths. Flow velocity monitoring holes in the lateral sides of the runoff grooves and flow monitoring outlets in the front ends of the runoff grooves can monitor the reaching position of a trace agent which is thrown into the interflow from a trace agent pipe along with the interflow, so that the flow velocity and the flow of the interflow can be calculated out. Thus, three-dimensional monitoring on the interflow can be achieved.

The invention relates to the technical field of water and soil loss, and particularly relates to a rainfall erosion measuring box. The rainfall erosion measuring box comprises a box body and a tilting mechanism, wherein the box body is used for bearing soil, and the tilting mechanism is connected with the box body for pushing the box body to make one end of the box body lower than the other end of the box body; a drainage hole is formed in the end face at one end which is lower when the box body is pushed by the tilting mechanism; a water collector is arranged above the end face and used for collecting water reserved by inclining soil on the top face of the box body. The invention further relates to a soil erosion amount measuring method with the rainfall erosion measuring box. The box provided by the invention can simulate a field environment in a laboratory or other non-field environments to measure water and soil loss, particularly, data of direct surface runoff and interflow can be acquired, and thus the box is convenient for scientific analysis and research workers to use.

The invention relates to a tracer dispensing instrument for measuring the flow velocity of slope runoff and soil flow, comprising a base, on which a main supporting rod is arranged, and a hand-held rotating rod rotating shaft is arranged on the upper support frame of the main supporting rod, The rotating shaft of the hand-held rotating rod is connected to the front end of the rotating rod through the rotating shaft, and an initial state locking bolt is arranged on the upper end of the main support rod, and the initial state locking bolt cooperates with the initial state lock hole on the fixed hand-held rotating rod Position limit, the hand-held rotating rod is provided with an upper and lower groove on the hand-held rotating rod to connect the total connecting rod of the tracer connecting rod frame, and the total connecting rod of the tracer connecting rod frame is limited by the fixed shaft collar of the total connecting rod. Position, the fixed shaft collar of the total connecting rod is arranged in the middle of the main support rod; the present invention measures the flow velocity in the soil by using the tracing method of groundwater flow velocity measurement, and the instrument of the invention can be used for the measurement of slope runoff velocity. The tracer delivery can also be used to measure the tracer delivery at different levels of soil flow velocity.

The invention discloses a method for estimating drainage basin average free water storage capacity through flow hydrograph. The method comprises the steps of dividing a session flood in actual measurement flow data of a drainage basin outlet station; dividing a surface runoff, an interflow and a groundwater runoff on the session flood hydrograph, calculating runoff depths of the surface runoff, the interflow and the groundwater runoff and obtaining the total runoff depth; calculating the net rainfall depth of the session flood; calculating a free water storage reservoir full storage area proportion in full storage runoff generation; calculating an outflow coefficient of the interflow through combination of a linear constraint relation between the outflow coefficients of the interflow and the groundwater runoff according to a proportional relation among the runoff depths of the surface runoff, the interflow and the groundwater runoff; and carrying out estimation to obtain a value of the drainage basin average free water storage capacity according to the outflow coefficient of the interflow and the free water storage reservoir full storage area proportion in full storage runoff generation. According to the method, the number of the parameters needing to be set is reduced, and the probability that same effect of different parameters occurs is reduced.