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An observation device and a technology for surface runoff, applied in the field of agricultural production, can solve problems such as failure to meet observation requirements, and achieve the effects of low equipment manufacturing cost, wide observation range and high observation accuracy
Inactive Publication Date: 2009-07-29
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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It can be widely used in the monitoring of various non-pressure, low head, and small flow water flows such as runoff areas on slopes, mid-soil flow, subsurface flow in underground fissures, and base flow in small watersheds; the main problem is that the recording paper needs to be replaced regularly. It can only be used for small-flow runoff observations. The maximum observed runoff per minute is only 3kg. It is reported that the runoff in the field sometimes reaches as high as 30kg per minute, so it has not yet met the requirements for field observations in various situations.
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[0022] Field installation of equipment: for flat farmland, grassland, and woodland, closed plots can be used, and this device can be used to replace the splitter barrel for observation. The plot is closed with a detachable PVC board with a thickness of 10mm and a height of 40mm according to the size of the observation, and a collection fan is set underneath. , use a PVC pipe 1 with an inner diameter of 70mm and a wall thickness of 3.0mm to connect with the measuring device. The length of the PVC pipe 1 depends on the slope, so that the bottom of the device just reaches the surface runoff and can flow down naturally; For a natural watershed, a metal funnel 26 of 28cm is placed in the ditch with the same shape as the ditch, and a PVC pipe 1 with an inner Φ70mm wall thickness of 3.0mm is connected with the measuring device. The length of the PVC pipe 1 depends on the slope, so that The bottom of the device just reaches the surface runoff and can flow down naturally. Under the abo...
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Abstract
The invention is a movable surface runoff observation device, which is applicable to the observation of surface runoff under various field conditions. This device is mainly composed of five parts: runoff collection device, runoff sample collection device, runoff measurement device, data measurement system, and rain protection cover. The device can be used to directly measure surface runoff under various areas, different land use modes, different management measures, different slopes, and slope lengths. Compared with the traditional runoff plot observation, it is mobile, directly observes the runoff under natural site conditions, has high sample collection accuracy, low cost, high utilization rate, wide application range, and can observe the runoff intensity per unit time, etc. Advantages: Compared with the existing mobile runoff observation device, it has the advantages of being able to meet the large flow of runoff observation in the field, easy installation and operation, electronic records, high observation accuracy, and less failures. The device is easy to install and use, the result is real, the cost is low, and it is suitable for popularization.
Description
technical field [0001] The invention belongs to the technical field of agricultural production. It is a mobile surface runoff observation device, which is suitable for the observation of surface runoff under various field conditions. technical background [0002] Soil erosion is one of the major disasters in the world. It destroys land resources, causes productivity decline and siltation; consumes limited water resources, causes disasters such as drought and flood, causes deterioration of ecological environment, and seriously threatens human survival and development. issues of general concern. The problem of soil erosion exists to varying degrees in both developing and developed countries, and it tends to continue to deteriorate. According to the estimates of the Food and Agriculture Organization of the United Nations, the area of land where water and soil erosion occurs in the world is as high as 25 million square kilometers, accounting for 16.7% of the total land area,...
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Patent Type & Authority Patents(China)
IPC IPC(8): G01F11/26G01F11/10G01F15/00
Inventor 张兴义张秋英焦晓光隋跃宇商磊崔振海
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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