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Device and method for monitoring runoffs and infiltration characteristics of slope change soil

A monitoring device and runoff technology, which is applied in measuring devices, soil material testing, permeability/surface area analysis, etc., can solve problems such as inability to simulate and compare infiltration characteristics, and achieve the effects of simple production, easy promotion, and quick operation

Active Publication Date: 2014-06-25
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the prior art cannot simulate and compare the infiltration characteristics of different soil layer thicknesses of undisturbed soil under laboratory rainfall conditions

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  • Device and method for monitoring runoffs and infiltration characteristics of slope change soil

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Such as figure 1 , a variable slope soil runoff and infiltration characteristic monitoring device proposed in the embodiment of the present invention, which includes a stepped tank 1, a runoff collector, a seepage collector, a bracket, and an artificial rainfall simulation device, and the stepped tank is composed of a plurality of The strip grooves 2 of different depths are connected side by side, and the top of the front end of each strip groove is provided with a runoff water outlet 3. Preferably, the runoff water outlet is advisable 15cm apart from the notch of the strip groove where it is located. The bottom of the front end of the strip groove 2 is provided wi...

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Abstract

The invention relates to the monitoring field of the soil infiltration and provides a device and a method for monitoring runoffs and infiltration characteristics of slope change soil. The method comprises the following steps: dividing a current slope change experiment steel groove into strip-shaped grooves with different depths, forming seepage water outlets at the bottoms of the front ends of the strip-shaped grooves, communicating a seepage collector with the seepage water outlets, changing slopes of the strip-shaped grooves and the strength of inner soil precipitation to observe and calculate infiltration time and infiltration rates of different soil layer thicknesses under different rainfall intensities and slopes, determining rainfall thresholds of infiltration runoffs of different soil layers, evaluating rates of contribution to the infiltration caused by different soil layers and physicochemical properties so as to facilitate the comparison of difference between runoffs, infiltration yields and sediment yields formed by different soil thicknesses and soil layers, and finding influence factors (such as soil texture, porosity, contents of organic matters, contents of mineral nutrients and the like) for controlling the runoffs and the infiltration yields of different soil thicknesses and different soil layers. The device is simple to manufacture, easy to popularize and convenient to operate.

Description

technical field [0001] The invention relates to the field of soil water seepage capacity monitoring, in particular to a monitoring device for soil runoff and infiltration characteristics of variable slopes and a monitoring method thereof. Background technique [0002] Surface runoff, soil infiltration, and rainfall splash erosion are the most common types of erosion in China. At the same time, the characteristics of runoff and infiltration are important factors affecting soil water balance and ecosystem water cycle, and are important components of ecosystem hydrology research ( LI et al. 2012; Hany EI Kateb et al. 2013). In order not to be affected by environmental factors such as topography and microclimate, the current research on the mechanism characteristics of runoff, infiltration and soil erosion (sediment production) often uses the method of artificial rainfall in the laboratory to simulate, which has increasingly attracted researchers. focus on. For example, the ne...

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Application Information

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IPC IPC(8): G01N33/24G01N15/08
Inventor 高吉喜郑好田美荣冯朝阳邹长新王燕
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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