Experimental teaching aid for exploring erosion degree of rainwater to land under different conditions

Abstract

The utility model provides an experimental teaching aid for exploring the erosion degree of rainwater to land under different conditions, and aims to help primary school science and geography in junior and senior high schools to explore the erosion of rainwater to land. The teaching aid is composed of a base, a height-adjustable supporting frame, a T-shaped water pipe, two containers capable of containing soil and a plurality of adjustable sprayers, the design is simple, materials are easy to obtain, and the cost is low. The container can be filled with soil with different densities, and vegetation is arranged to cover the container so as to simulate a real environment. The rainfall flow is controlled through the nozzle, and the influence of different rainfall conditions on soil erosion is explored. The water and soil loss condition at the height can be simulated by adjusting the length of the spray head pipe, and meanwhile the erosion influence of rainwater on soil with different softness degrees can be researched. The teaching aid not only promotes students to practice and stimulate their interest in geographical learning, but also helps to combine textbook knowledge with actual life and understand the influence of water and soil loss on ecological environment, and lays a foundation for future environmental protection consciousness cultivation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to teaching aid technical field, concretely relates to an experimental teaching aid for exploring the erosion degree of rainwater on land under different conditions. BACKGROUND

[0002] "Water and soil loss" refers to the phenomenon of soil and water resources gradually being lost due to the influence of natural factors such as water erosion, wind power and human activities. This phenomenon is common in sloping land, arid and semi-arid areas, especially in places with insufficient vegetation cover and fragile soil structure. Water and soil loss not only leads to a decrease in soil fertility, but also causes a series of environmental problems such as water pollution, ecological imbalance and a decrease in agricultural productivity.

[0003] Exploring the causes of water and soil loss is an essential teaching content in existing geography teaching. In the current teaching environment, the dynamic process of water and soil loss and its impact on the environment and ecology can be demonstrated through multimedia technology such as videos and animations, or teaching instruments and equipment. Through vivid visual effects, students can more intuitively understand the mechanism of water and soil loss. However, in areas with relatively backward infrastructure, students often have difficulty understanding the process and causes of water and soil loss without multimedia teaching conditions.

[0004] To solve the above problems, the utility model provides a simple experimental teaching aid to help students in rural, remote mountainous areas and other areas with relatively backward infrastructure understand the causes and impact of water and soil loss through on-site teaching experiments.

[0005] The above information disclosed in the above background section is only used to enhance the understanding of the background of the technology described herein, therefore, the background may contain some information which is not considered as prior art known in the country by those skilled in the art. UTILITY MODEL CONTENT

[0006] In order to solve the defects existing in the prior art, the utility model provides an experimental teaching aid for exploring the erosion degree of rainwater on land under different conditions, which is made of materials from daily life, has low cost, is easy to make and simple to use. Teachers and students can make it themselves by using local materials, which can achieve intuitive, visual, lively and interesting teaching effect, attract students and reduce the difficulty of teachers in teaching, improve the teaching efficiency of each class, and is very practical in rural middle school geography classroom teaching, is a useful tool in geography teaching, and can solve the lack of teaching instruments and equipment in rural areas to a great extent.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] An experimental teaching aid for exploring the degree of land erosion by rainwater under different conditions, comprising a base and a support frame, the base being provided with two soil containers symmetrically arranged thereon, a T-shaped water pipe being connected to the upper portion of the support frame, the lower end of the T-shaped water pipe being provided with two water outlets symmetrically arranged, the two water outlets being located directly above the two soil containers respectively, a water reservoir being mounted on the upper end of the T-shaped water pipe, and a valve being arranged in the middle portion of the T-shaped water pipe.

[0009] Optionally, a spray head is detachably mounted on each of the two water outlets at the lower end of the T-shaped water pipe.

[0010] Optionally, the soil container is a transparent structure made of a material, is provided with an opening at the upper portion, is provided with a drainage hole at one end, and is provided with an end cover at the drainage hole.

[0011] Optionally, the soil containers are filled with soil with different densities, so as to explore the degree of soil erosion by rainwater under the condition that other conditions are the same and the softness of different soils is different.

[0012] Optionally, the two soil containers are filled with soil with the same density, and the soil in one of the soil containers is covered with vegetation, so as to explore the degree of soil erosion by rainwater under the condition that other conditions are the same and whether there is vegetation on the soil.

[0013] Optionally, the two water outlets at the ends of the T-shaped water pipe are externally connected to water pipes, and a spray head is connected to the end portion of the water pipe, so that the heights of the two ends of the water pipe are different, and the degree of soil erosion by rainwater under the condition that other conditions are the same and the height of rainfall is different can be explored.

[0014] Optionally, the support frame is cross-shaped, and the lower portion of the support frame is provided with an extendable structure comprising an outer rod and an inner rod, the outer rod being provided with a positioning hole, and a positioning member being mounted in the positioning hole, so that the height of the support frame can be adjusted according to the height of different students.

[0015] Optionally, the water reservoir is made of a transparent material, is provided with an opening at the upper portion, and is provided with a water outlet at the lower portion.

[0016] As described above, the experimental teaching aid has the following beneficial effects:

[0017] Overall, compared with the prior art, the experimental teaching aid for exploring the erosion degree of rainwater on land under different conditions provided by the utility model aims to help students deeply understand the mechanism of water and soil loss and its relationship with ecological environment. The aid is composed of a base, a support frame (height can be adjusted), a "T" shaped water pipe, two soil containers and several length different (rainfall height can be adjusted) and density different (rainfall size can be adjusted) spray heads, which is simple in design, easy in material and low in cost. The containers can be filled with soil of different densities, and vegetation coverage can be set to simulate the soil conditions in the real environment. The flow of rainwater is controlled by the spray head, and the influence of different rainfall conditions on soil erosion is explored. At the same time, the soil container is placed obliquely, and the length of the adjustable spray head pipe is adjusted. The height setting can simulate the water and soil loss under the height. The influence of rainwater on the erosion of different soil with different softness can also be explored by improving the structure of the soil. This aid not only promotes students' hands-on practice, but also stimulates students' interest in geography learning, and is suitable for primary school science, junior high school geography to explore the erosion of rainwater on land, helping them to combine textbook knowledge with actual life, understand the influence of water and soil loss on ecological environment, and lay a foundation for future environmental protection consciousness. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be explained through examples and in the mode of referring to the drawings, wherein:

[0019] Figure 1 It is the structural schematic diagram of experimental teaching aid in the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0021] Embodiment 1

[0022] The present embodiment provides an experimental teaching aid for exploring the erosion degree of rainwater on land under different conditions, referring to Figure 1 , comprising:

[0023] Base 1: as the basis of the whole device, stably bearing other components, usually made of wood or plastic.

[0024] Support frame 2: standing on the base 1, cross-shaped, to support the "T" shaped water pipe 4, to ensure its stability, the lower part is provided with telescopic structure, including outer rod 12 and inner rod 13, outer rod is provided with positioning hole, positioning piece 14 is installed in the positioning hole, through the above, the height of the support frame can be adjusted according to the height of different students.

[0025] Soil container 3: two soil containers 3 are symmetrically arranged on the base 1, the containers can be filled with different types (tightness, whether there is vegetation 10 covering) of soil 9, so as to compare the erosion under different soil 9 conditions.

[0026] "T" shaped water pipe 4: the "T" shaped water pipe 4 is fixed on the support frame 2 by a plurality of binding belts 11, the upper end of the water pipe is connected with the water storage device 5, and the water storage device 5 is used for storing water source; the water storage device 5 is made of transparent material, preferably a transparent mineral water bottle, and the upper end is opened, the middle part is provided with valve 6 to control water flow, so as to adjust the flow; the lower end has two symmetrical water outlets, which are located above the two soil containers 3 respectively.

[0027] Spray head 7: each water outlet can be detachably installed with spray head 7, which is optionally installed on the "T" shaped water pipe 4 by threaded connection, so as to be convenient to replace. Different aperture spray heads 7 can be selected to realize simulation of different rainfall amounts.

[0028] Experimental principle

[0029] To explore the erosion degree of soil 9 under different rainfall amounts under the condition that other conditions are unchanged;

[0030] In the experiment, different aperture spray heads 7 can be installed on both sides to simulate different rainfall amounts, so as to study the erosion degree of soil 9 under different rainfall intensity conditions, and help students understand the causes and influences of water and soil loss.

[0031] Embodiment 2

[0032] Different from the above embodiment 1, in this embodiment, the erosion degree of soil 9 corresponding to rainwater under different softness of soil 9 is explored.

[0033] Reference Figure 1 , the soil containers 3 are filled with soil 9 with different densities, for example: light soil (such as sandy soil), medium density soil (such as loam), heavy density soil (such as clay).

[0034] Different softness of soil 9 samples are filled in a plurality of soil containers 3, and the initial state of each soil 9 is recorded.

[0035] Experimental principle

[0036] In the experiment, by adjusting the different densities of the soil 9 filled in the two soil containers 3, the different degrees of softness of the soil 9 are simulated. Under the same conditions of rainfall, slope, height, and whether there is vegetation 10 coverage, the erosion degree of the soil 9 caused by the corresponding rainwater under the condition of the different degrees of softness of the soil 9 is explored.

[0037] Example 3

[0038] Different from the above-mentioned examples 1 and 2, in this example, the erosion degree of the soil 9 caused by the corresponding rainwater under the condition of whether there is vegetation 10 coverage above the soil 9 is explored.

[0039] Referring to Figure 1 , the two soil containers 3 are filled with the soil 9 with the same density, and the soil 9 on one side of the soil container 3 is covered with vegetation 10 (such as grass, alfalfa, etc.), which simulates the condition of vegetation 10 coverage in the natural environment.

[0040] Experimental principle

[0041] In the experiment, by adjusting the vegetation 10 coverage above the soil 9 on one side of the soil container 3, the condition of whether there is vegetation 10 coverage above the soil 9 is simulated. Under the same conditions of the degree of softness of the soil 9, rainfall, slope, height, etc., the erosion degree of the soil 9 caused by the corresponding rainwater under the condition of whether there is vegetation 10 coverage above the soil 9 is explored.

[0042] Example 4

[0043] Different from the above-mentioned examples 1, 2 and 3, in this example, the erosion degree of the soil 9 caused by the corresponding rainwater under the condition of different rainfall heights is explored. The two ends of the “T”-shaped water pipe are both externally connected with water pipes, and the spray heads are connected to the end of the water connection pipes. In this way, the rainfall heights of the two ends can be different, so as to explore the erosion degree of the soil caused by the corresponding rainwater under the condition of different rainfall heights and the same other conditions.

[0044] By comparing the two conditions (high rainfall height and low rainfall height), the difference in the amount of mud and water loss is observed, the influence of the rainfall height on the impact force and flow speed of the soil 9 particles is discussed, and further exploration is made on how to adjust the rainfall characteristics to slow down the soil 9 erosion.

[0045] It should be noted that the standard parts used therein can be purchased from the market, and can be customized according to the description and drawings. The specific connection mode of each part adopts the conventional bolt, rivet, welding, etc. in the prior art. The mechanical parts, components and equipment adopt the conventional type in the prior art, and the structure and principle of the components known to the person skilled in the art can be known through the technical manual or through the conventional experimental method.

[0046] The above-described above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An experimental teaching aid for exploring the degree of land erosion caused by rainwater under different conditions, characterized in that, include: The base (1) and the support frame (2) are provided. Two soil containers (3) are symmetrically arranged on the base (1). A “T”-shaped water pipe (4) is tied to the top of the support frame (2). The lower end of the “T”-shaped water pipe (4) is set as two symmetrical water outlets. The two water outlets are located directly above the two soil containers (3). A water storage device (5) is installed at the upper end of the “T”-shaped water pipe (4). A valve (6) is set in the middle of the “T”-shaped water pipe (4).

2. The experimental teaching aid for exploring the degree of land erosion caused by rainwater under different conditions, as described in claim 1, is characterized in that... Sprayers (7) can be detachably installed at both outlets at the lower end of the “T”-shaped water pipe (4).

3. The experimental teaching aid for exploring the degree of land erosion caused by rainwater under different conditions, as described in claim 1, is characterized in that... The soil container (3) is a transparent structural component with an opening at the top and a drainage hole at one end. An end cap (8) is provided at the drainage hole.

4. The experimental teaching aid for investigating the degree of land erosion caused by rainwater under different conditions, as described in claim 1, is characterized in that... The soil container (3) is filled with soil (9) of different densities.

5. The experimental teaching aid for exploring the degree of land erosion caused by rainwater under different conditions, as described in claim 1, is characterized in that... The two soil containers (3) are filled with soil (9) of the same density, and vegetation (10) covers the soil (9) on one side of the soil container (3).

6. The experimental teaching aid for exploring the degree of land erosion caused by rainwater under different conditions, as described in claim 1, is characterized in that... The support frame (2) is cross-shaped and has a telescopic structure at its lower part, including an outer rod (12) and an inner rod (13). The outer rod has a positioning hole and a positioning element (14) is installed in the positioning hole.

7. The experimental teaching aid for exploring the degree of land erosion caused by rainwater under different conditions, as described in claim 1, is characterized in that... The water reservoir (5) is made of transparent material, with an opening at the top and a water outlet at the bottom.

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