A field in-situ monitoring device for measuring surface runoff-subsurface flow on plantation slopes

Abstract

This invention discloses a device for in-situ monitoring of surface runoff-interflow on plantation forest slopes, comprising a surface runoff ditch, a surface runoff collection well, an interflow pipe, and an interflow collection well. The surface runoff ditch is horizontally constructed on the slope, with a lower center and higher sides. The surface runoff collection well is connected at the center of the ditch. The interflow pipe is vertically inserted into the slope, with multiple interflow collection boxes on its side. A central pipe is located at the center of the interflow pipe, and the central pipe is connected to the interflow collection well. Compared with existing technologies, this invention can collect interflow in continuous slopes.

Description

Technical Field

[0001] This invention relates to the field of forest monitoring technology, specifically a field in-situ measurement device for measuring surface runoff-interflow on artificial forest slopes. Background Technology

[0002] Runoff is water flow formed from atmospheric precipitation and enters rivers, lakes, or oceans through different pathways within a watershed. Runoff can be classified into surface runoff, interflow, and groundwater flow based on its formation and path. Interflow is not only a significant component of runoff loss in soil erosion but also an important carrier of pollutants. Therefore, field monitoring devices for surface runoff and interflow on natural slopes are of great importance for research on these two phenomena. Current technologies for monitoring surface runoff and interflow involve cutting off the slope with a retaining wall to detect interflow at different depths. However, constructing such cut-off slopes is difficult, requires adaptation to the slope topography, and is not well-suited for continuous slopes.

[0003] Therefore, it is necessary to provide a field in-situ monitoring device for measuring surface runoff-interflow on artificial forest slopes to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a device for measuring surface runoff-subsurface flow on artificial forest slopes in situ, comprising a surface runoff ditch, a surface runoff collection well, a subsurface flow pipe, and a subsurface flow collection well. The surface runoff ditch is opened laterally on the slope, with the center of the ditch being lower than the sides. The surface runoff collection well is connected at the center of the surface runoff ditch. The subsurface flow pipe is vertically inserted into the slope. Multiple subsurface flow collection boxes are provided on the side of the subsurface flow pipe. A central pipe is provided at the center of the subsurface flow pipe, and the central pipe is connected to the subsurface flow collection well.

[0005] Furthermore, as a preferred embodiment, the surface runoff collection wells are provided in multiple locations, and the height of the multiple surface runoff collection wells decreases sequentially from top to bottom along the slope.

[0006] Furthermore, as a preferred embodiment, multiple sets of the soil flow collection boxes are distributed along the axial direction of the soil flow pipe. Each set of soil flow collection boxes is circumferentially distributed on the side wall of the soil flow pipe. The soil flow collection boxes can move radially along the soil flow pipe. The inner wall of the soil flow collection box is in communication with the soil flow pipe. The top of the soil flow pipe is a filter screen.

[0007] Furthermore, as a preferred embodiment, a fixed sleeve is movably fitted onto the central tube at the corresponding position within each set of interflow collection boxes. The fixed sleeve is fixedly mounted on the inner wall of the interflow tube. A movable sleeve is also fitted onto the central tube on the fixed sleeve. The fixed sleeve and the movable sleeve are hinged together by an "X"-shaped scissor linkage. The other end of the scissor linkage is respectively hinged and slidably connected to the interflow collection box.

[0008] Furthermore, as a preferred embodiment, a threaded sleeve is rotatably fitted onto the central tube between the fixed sleeve and the movable sleeve, the lower end of the threaded sleeve being threadedly connected to the fixed sleeve, and the upper end of the threaded sleeve being rotatably connected to the movable sleeve while restricting its movement.

[0009] Furthermore, as a preferred embodiment, the side wall of the central tube is provided with a keyway, and the inner wall of the threaded sleeve is also provided with a keyway. An adjusting rod is slidably provided in the keyway of the central tube, and a connecting key is fixed in the adjusting rod.

[0010] Furthermore, as a preferred embodiment, a knob is fixed in the central tube of the soil flow pipe.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In this invention, by sliding the adjusting rod into the keyway of one of the threaded sleeves, rotating the knob allows the interflow collection box at the corresponding depth to extend out of the interflow pipe. The interflow is collected through a filter screen and enters the interflow pipe, and can be pumped into the interflow collection well by a water pump, thereby enabling the collection of interflow in a continuous slope. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a device for measuring surface runoff-interflow on artificial forest slopes in situ.

[0014] Figure 2 This is a schematic diagram of the structure of the soil flow tube;

[0015] Figure 3 This is a schematic diagram of the scissor lift linkage.

[0016] In the diagram: 1. Surface runoff ditch; 2. Surface runoff collection well; 3. Subsurface runoff pipe; 4. Subsurface runoff collection box; 41. Filter screen; 5. Central pipe; 51. Adjusting rod; 52. Connecting key; 53. Knob; 6. Subsurface runoff collection well; 7. Fixed sleeve; 8. Movable sleeve; 9. Threaded sleeve; 10. Scissor lift rod. Detailed Implementation

[0017] Please see Figure 1In this embodiment of the invention, a field in-situ monitoring device for measuring surface runoff-subsurface flow on artificial forest slopes includes a surface runoff ditch 1, a surface runoff collection well 2, a subsurface flow pipe 3, and a subsurface flow collection well 6. The surface runoff ditch 1 is horizontally opened on the slope, with the center of the ditch 1 being lower than the sides. The surface runoff ditch 1 is connected to the surface runoff collection well 2 at its center. The subsurface flow pipe 3 is vertically inserted into the slope. Multiple subsurface flow collection boxes 4 are provided on the side of the subsurface flow pipe 3. A central pipe 5 is provided at the center of the subsurface flow pipe 3, and the central pipe 5 is connected to the subsurface flow collection well 6.

[0018] In this embodiment, multiple surface runoff collection wells 2 are provided, and the height of the multiple surface runoff collection wells 2 decreases sequentially from top to bottom along the slope. When the water storage of the upper-level surface runoff collection well 2 is full, it can overflow into the lower-level surface runoff collection well 2, thereby increasing the volume of surface runoff collection. Moreover, only the surface runoff collection wells 2 that are not full need to be counted with a flow meter, which improves the accuracy and efficiency of the count.

[0019] Please see Figure 2 In this embodiment, multiple sets of soil runoff collection boxes 4 are distributed along the axial direction of the soil runoff pipe 3. Each set of soil runoff collection boxes 4 is circumferentially distributed on the side wall of the soil runoff pipe 3. The soil runoff collection boxes 4 can move radially along the soil runoff pipe 3. The inner wall of the soil runoff collection box 4 is in communication with the soil runoff pipe 3. The top of the soil runoff pipe 3 is a filter screen 41. That is to say, when the soil runoff collection box 4 extends outside the soil runoff pipe 3, it can collect soil runoff through the filter screen 41 and enter the soil runoff pipe 3. It can also be pumped into the soil runoff collection well 6, thereby enabling the collection of soil runoff in a continuous slope.

[0020] Please see Figure 3 In this embodiment, a fixed sleeve 7 is movably fitted onto the central tube 5 at the corresponding position within each set of interflow collection boxes 4. The fixed sleeve 7 is fixedly mounted on the inner wall of the interflow pipe 3. A movable sleeve 8 is also fitted onto the central tube 5 of the fixed sleeve 7. The fixed sleeve 7 and the movable sleeve 8 are hinged together by an "X"-shaped scissor linkage 10. The other end of the scissor linkage 10 is respectively hinged and slidably connected to the interflow collection box 4. By sliding the movable sleeve 8 up and down, the scissor linkage 10 can push the interflow collection box 4 to extend out of the interflow pipe 3 or retract into the interflow pipe 3, thereby enabling interflow collection boxes 4 at different depths to collect interflow.

[0021] In this embodiment, a threaded sleeve 9 is rotatably fitted onto the central tube 5 between the fixed sleeve 7 and the movable sleeve 8. The lower end of the threaded sleeve 9 is threadedly connected to the fixed sleeve 7, and the upper end of the threaded sleeve 9 is rotatably connected to the movable sleeve 8 while restricting its movement. By rotating the threaded sleeve 9 to screw it into the fixed sleeve 7 to different depths, the movable sleeve 8 can slide up and down.

[0022] In this embodiment, a keyway is provided on the side wall of the central tube 5, and a keyway is also provided on the inner wall of the threaded sleeve 9. An adjusting rod 51 is slidably provided in the keyway of the central tube 5, and a connecting key 52 is fixed in the adjusting rod 51. A knob 53 is fixed in the central tube 5 on the interflow pipe 3. That is, when the adjusting rod 51 slides to the point where the connecting key 52 is inserted into the keyway of one of the threaded sleeves 9, the torque of the central tube 5 can be transmitted to that threaded sleeve 9. By rotating the central tube 5 through the knob 53, the threaded sleeve 9 can be rotated, causing the corresponding interflow collection box 4 to extend out of or retract into the interflow pipe 3 without affecting the state of other interflow collection boxes 4. This allows for the control of interflow collection boxes 4 at different depths to collect interflow at different depths.

[0023] In practice, the surface runoff collected by the surface runoff ditch 1 flows into the surface runoff collection well 2. When the water storage of the upper-level surface runoff collection well 2 is full, it can overflow into the lower-level surface runoff collection well 2, thereby increasing the volume of surface runoff collection. Moreover, only the flow meter is needed to count the surface runoff collection well 2 that is not full, improving the accuracy and efficiency of the count. By sliding the adjusting rod 51 into the keyway of one of the threaded sleeves 9, and turning the knob 53, the soil runoff collection box 4 at the corresponding depth can be extended out of the soil runoff pipe 3. The soil runoff is collected through the filter screen 41 and enters the soil runoff pipe 3. It can then be pumped into the soil runoff collection well 6, thereby enabling the collection of soil runoff in the continuous slope.

[0024] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A field in-situ monitoring device for measuring surface runoff-subsurface flow on artificial forest slopes, comprising a surface runoff ditch (1), a surface runoff collection well (2), a subsurface flow pipe (3), and a subsurface flow collection well (6), characterized in that, The surface runoff ditch (1) is opened horizontally on the slope, and the surface runoff ditch (1) is low in the center and high on both sides. The surface runoff ditch (1) is connected to the surface runoff collection well (2) at the center. The soil flow pipe (3) is vertically inserted into the slope. Multiple soil flow collection boxes (4) are provided on the side of the soil flow pipe (3). A central pipe (5) is provided in the center of the soil flow pipe (3). The central pipe (5) is connected to the soil flow collection well (6). Multiple sets of the soil flow collection boxes (4) are distributed along the axial direction of the soil flow pipe (3). Each set of soil flow collection boxes (4) is circumferentially distributed on the side wall of the soil flow pipe (3). The soil flow collection boxes (4) can move radially along the soil flow pipe (3). The inner wall of the soil flow collection box (4) is connected to the soil flow pipe (3). In each set of interflow collection boxes (4), the corresponding central tube (5) is movably fitted with a fixed sleeve (7). The fixed sleeve (7) is fixedly mounted on the inner wall of the interflow tube (3). The central tube (5) on the fixed sleeve (7) is also fitted with a movable sleeve (8). The fixed sleeve (7) and the movable sleeve (8) are hinged together by an "X"-shaped scissor link (10). The other end of the scissor link (10) is respectively hinged and slidably connected to the interflow collection box (4). A threaded sleeve (9) is rotatably fitted on the central tube (5) between the fixed sleeve (7) and the movable sleeve (8). The lower end of the threaded sleeve (9) is threadedly connected to the fixed sleeve (7), and the upper end of the threaded sleeve (9) is rotatably connected to the movable sleeve (8) with restricted movement. The side wall of the central tube (5) is provided with a keyway, and the inner wall of the threaded sleeve (9) is also provided with a keyway. An adjusting rod (51) is slidably provided in the keyway of the central tube (5), and a connecting key (52) is fixed in the adjusting rod (51).

2. The device for measuring surface runoff-interflow on artificial forest slopes according to claim 1, characterized in that, The surface runoff collection wells (2) are provided in multiple ways, and the height of the multiple surface runoff collection wells (2) decreases from top to bottom along the slope.

3. The device for measuring surface runoff-interflow on artificial forest slopes according to claim 1, characterized in that, The top of the soil flow pipe (3) is a filter screen (41).

4. The device for measuring surface runoff-interflow on artificial forest slopes according to claim 1, characterized in that, A knob (53) is fixed in the central tube (5) of the soil flow pipe (3).

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