Foundation anti-seepage curtain structure for collapsible loess

Abstract

The utility model provides a collapsible loess foundation anti -infiltration curtain structure, including mortar layer, the top of mortar layer installs a plurality of supports, two between the support rotatory connection rotatory drum, the surface of rotatory drum is equipped with a plurality of side wall arc -shaped sliding slot, and the surface of rotatory drum rotatory connection a plurality of gyro wheel, the side wall fixed connection fixed shaft of support, the inside rotatory connection axle of fixed shaft, the side wall both ends of rotatory drum all fixed connection axle, the inside equidistance installation a plurality of ring distribution of the elastic sheet of fixed shaft, the surface installation a plurality of hemispherical boss of axle, and the sliding connection between boss and elastic sheet. The collapsible loess foundation anti -infiltration curtain structure provided by the utility model has the advantages of convenient reduction lake water scouring, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of seepage prevention technology for collapsible loess foundations, and in particular to a seepage prevention curtain structure for collapsible loess foundations. Background Technology

[0002] Collapsible loess is a type of soil with unique properties, characterized by its relatively homogeneous texture, loose structure, and well-developed pores. When undisturbed, it generally exhibits high strength and low compressibility. However, when soaked under pressure, its structure rapidly deteriorates, resulting in significant additional subsidence and a rapid decrease in strength. In the construction of artificial lakes in collapsible areas, water seepage can cause surface subsidence, and ineffective seepage prevention may prevent the formation of a water surface. Therefore, safe and reliable seepage prevention measures are essential to ensure the safety and controllability of the water surface seepage prevention system.

[0003] The artificial lake is equipped with anti-seepage structures around its perimeter and bottom. However, due to the long-term scouring of the lake water, the surface of the anti-seepage curtain around the artificial lake is easily damaged, resulting in a decrease in anti-seepage capacity and leakage of lake water. Moreover, once leakage occurs, the soil structure is rapidly destroyed after the water content in the collapsible loess increases, and the strength is significantly reduced. Under its own weight or additional pressure, it is prone to collapsing deformation.

[0004] Therefore, it is necessary to provide a new anti-seepage curtain structure for collapsible loess foundations to solve the above problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a seepage prevention curtain structure for collapsible loess foundation that reduces lake water erosion and extends service life.

[0006] To solve the above-mentioned technical problems, the present invention provides a seepage prevention curtain structure for collapsible loess foundation, comprising: a mortar layer, multiple supports installed at the top of the mortar layer, a rotating cylinder rotatably connected between two supports, the surface of the rotating cylinder having multiple arc-shaped sliding grooves on its sidewalls, and multiple rollers rotatably connected to the surface of the rotating cylinder; a fixed shaft fixedly connected to the sidewall of the support, a rotating shaft rotatably connected inside the fixed shaft, and the rotating shaft fixedly connected to both ends of the sidewall of the rotating cylinder; multiple spring pieces evenly spaced in a ring inside the fixed shaft, and multiple hemispherical protrusions installed on the surface of the rotating shaft, with the protrusions slidably connected to the spring pieces.

[0007] Preferably, a red clay layer, a geomembrane, and a concrete layer are laid sequentially from top to bottom below the mortar layer. A rammed earth layer is set below the concrete layer, which is formed by pressing the collapsible loess layer using a heavy hammer compaction method.

[0008] Preferably, the thickness of the concrete layer is 30 cm, the thickness of the red clay layer is 40 cm, and the mortar layer is located around the red clay layer.

[0009] Preferably, the top of the mortar layer is provided with multiple grooves, and the inside of the grooves is rotatably connected to the rotating drum and the roller.

[0010] Preferably, the length of the groove is greater than the length of the rotating cylinder, the sidewall of the groove is arc-shaped, and the bottom end of the rotating cylinder is close to the outlet of the groove.

[0011] Preferably, both ends of the roller are fixedly connected to a rotating shaft, and multiple fixed shafts are installed inside the rotating drum, with the rotating shaft rotatably connected inside the fixed shafts.

[0012] Compared with related technologies, the anti-seepage curtain structure for collapsible loess foundations provided by this utility model has the following beneficial effects: This utility model provides a seepage-proof curtain structure for collapsible loess foundations. When treating an artificial lake for seepage prevention, the collapsible loess layer is treated using a heavy hammer compaction method to form a compacted layer, increasing the strength of the lakebed. A concrete layer, a geomembrane, and a red clay layer are then laid sequentially. The concrete layer smooths the lakebed surface, facilitating geomembrane installation, and further enhances the lakebed's strength. A layer of red clay is laid on top of the geomembrane, protecting it and, due to its naturally low permeability, isolating the lake water from the geomembrane, thus improving the seepage prevention effect. A mortar layer is laid around the red clay layer, protecting it and preventing direct erosion of the red clay by lake water. To prevent the loss of the red clay layer, as the surface of the lake water continuously washes over the mortar layer, the moving lake water comes into contact with the rotating cylinder. Multiple grooves are installed on the surface of the rotating cylinder, allowing some lake water to remain inside the grooves, reducing the scouring effect on the mortar layer. Furthermore, the movement of the lake water drives the rotating cylinder and the rotating shaft to rotate. The rotating shaft causes the protrusions to press against the spring sheet. After the spring sheet deforms, the protrusions separate from the spring sheet, causing the rotating shaft and the rotating cylinder to rotate. Due to the obstruction of the spring sheet, the resistance to the rotation of the rotating cylinder is increased, thereby offsetting part of the impact force of the water flow, improving the protective effect of the rotating cylinder on the surface of the mortar layer, extending the service life of the mortar layer, and improving the seepage prevention effect. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the anti-seepage curtain structure for collapsible loess foundation provided by this utility model; Figure 2 for Figure 1 The diagram shows an enlarged view of the structure at point A. Figure 3 for Figure 2 The top view of the rotating cylinder structure shown; Figure 4 for Figure 2 The diagram shows the rotating drum structure. Figure 5 for Figure 2 The image shows a side view of the internal structure of the rotating drum. Figure 6 for Figure 2 The diagram shows the internal structure of the rotating drum.

[0014] The numbers in the diagram are: 1. Collapsible loess layer, 2. Rammed soil layer, 3. Mortar layer, 4. Red clay layer, 5. Geomembrane, 6. Concrete layer, 7. Support, 8. Rotary cylinder, 81. Slide groove, 9. Groove, 10. Roller, 11. Fixed shaft, 12. Rotary shaft, 13. Spring, 14. Protrusion. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please see Figures 1 to 5 , Figure 1 A schematic diagram of a preferred embodiment of the anti-seepage curtain structure for collapsible loess foundation provided by this utility model; Figure 2 for Figure 1 The diagram shows the internal structure of the box. Figure 3 for Figure 2 The diagram shows the structure of the positioning roller. Figure 4 for Figure 2 The diagram shows the internal structure of the reel; Figure 5 for Figure 4 The side view of the fixed plate structure is shown. A seepage prevention curtain structure for collapsible loess foundation includes a mortar layer 3. Below the mortar layer 3, a red clay layer 4, a geomembrane 5, and a concrete layer 6 are laid sequentially from top to bottom. Below the concrete layer 6, a rammed earth layer 2 is provided. The rammed earth layer 2 is formed by pressing the collapsible loess layer 1 using a heavy hammer compaction method. The concrete layer 6 is 30 cm thick, the red clay layer 4 is 40 cm thick, and the mortar layer 3 is located around the red clay layer 4. When treating the artificial lake for seepage prevention, the collapsible loess layer 1 is treated with a heavy hammer compaction method to form a compacted layer 2, increasing the strength of the lake bottom. The concrete layer 6, geomembrane 5, and red clay layer 4 are laid sequentially. The concrete layer 6 makes the lake bottom surface flat, facilitating the laying of the geomembrane 5, and further enhances the strength of the lake bottom, preventing uneven settlement. A layer of red clay layer 4 is laid on the surface of the geomembrane 5, protecting it. The red clay layer 4 has naturally low permeability, isolating the lake water from the geomembrane 5 and improving the seepage prevention effect. A mortar layer 2 is laid around the red clay layer 4, protecting it and preventing the lake water from directly eroding it, thus preventing the red clay layer 4 from being lost.

[0017] Multiple supports 7 are installed at the top of the mortar layer 3. A rotating cylinder 8 is rotatably connected between two supports 7. The surface of the rotating cylinder 8 is provided with multiple arc-shaped sliding grooves 81, and multiple rollers 10 are rotatably connected to the surface of the rotating cylinder 8. A fixed shaft 11 is fixedly connected to the side wall of the support 7. A rotating shaft 12 is rotatably connected inside the fixed shaft 11. The rotating shaft 12 is fixedly connected to both ends of the side wall of the rotating cylinder 8. Multiple spring pieces 13 are equidistantly installed in a ring shape inside the fixed shaft 11. Multiple hemispherical protrusions 14 are installed on the surface of the rotating shaft 12, and the protrusions 14 are slidably connected to the spring pieces 13. As the surface of the lake water continuously washes over the mortar layer 3, the moving lake water comes into contact with the rotating cylinder 8. The rotating cylinder 8 has multiple arc-shaped grooves 81 installed on its surface, allowing some lake water to remain inside the grooves 81, reducing the scouring effect on the mortar layer 3. Furthermore, the movement of the lake water drives the rotating cylinder 8 and the rotating shaft 12 to rotate. The rotating shaft 12 causes the protrusion 14 to press against the spring sheet 13. After the spring sheet 13 deforms, the protrusion 14 separates from the spring sheet 13, allowing the rotating shaft 12 and the rotating cylinder 8 to continue rotating. Due to the obstruction of the spring sheet 13, the resistance to the rotation of the rotating cylinder 8 is increased, thereby offsetting some of the impact force of the water flow, improving the protective effect of the rotating cylinder 8 on the surface of the mortar layer 3, extending the service life of the mortar layer 3, and improving the seepage prevention effect.

[0018] The top of the mortar layer 3 is provided with multiple grooves 9, and the rotating cylinder 8 and roller 10 are rotatably connected inside the grooves 9. The length of the groove 9 is greater than the length of the rotating cylinder 8, and the sidewall of the groove 9 is arc-shaped. When the lake water moves and pushes the rotating cylinder 8 to rotate counterclockwise, the rotating cylinder 8 and the water enter the interior of the groove 9 together. The arc shape of the groove 9 facilitates the flow of water inside the groove 9, reducing the scouring of the mortar layer 3 by the water flow. As the rotating cylinder 8 rotates, it pushes the water inside the groove 9 outward from the outlet of the groove 9. The bottom end of the rotating cylinder 8 is close to the outlet of the groove 9, reducing the width of the outlet of the groove 9 and increasing the speed at which the water rushes out of the groove 9. The water rushing out of the groove 9 comes into contact with the lake water scouring the mortar layer 3. The two water flows move in different directions and cancel each other out, reducing the scouring of the mortar layer 3 by the lake water.

[0019] Both ends of the roller 10 are fixedly connected to the rotating shaft 12. Multiple fixed shafts 11 are installed inside the rotating cylinder 8. The rotating shaft 12 is rotatably connected inside the fixed shaft 11. In order to make the roller 10 located at the edge of the rotating cylinder 8 when the water flow pushes the rotating cylinder 8 to rotate, so that the lake water also pushes the roller 10 to rotate. Similarly, the roller 10 drives the rotating shaft 12 and the protrusion 14 to rotate around the spring piece 13, increasing the resistance of the roller 10 to rotate, so that the roller 10 rotates against the scouring force of the lake water and protects the surface of the mortar layer 3.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A seepage-proof curtain structure for collapsible loess foundations, characterized in that, include: Mortar layer (3), with multiple supports (7) installed at the top of the mortar layer (3), and a rotating cylinder (8) rotatably connected between two supports (7). The surface of the rotating cylinder (8) is provided with multiple sliding grooves (81) with arc-shaped sidewalls, and multiple rollers (10) rotatably connected to the surface of the rotating cylinder (8). The side wall of the support (7) is fixedly connected to a fixed shaft (11), and the inside of the fixed shaft (11) is rotatably connected to a rotating shaft (12). Both ends of the side wall of the rotating cylinder (8) are fixedly connected to the rotating shaft (12). Multiple spring pieces (13) are equidistantly installed in the inside of the fixed shaft (11) in a ring-shaped arrangement. Multiple hemispherical protrusions (14) are installed on the surface of the rotating shaft (12), and the protrusions (14) are slidably connected to the spring pieces (13).

2. The anti-seepage curtain structure for collapsible loess foundation according to claim 1, characterized in that, Below the mortar layer (3), a red clay layer (4), a geomembrane (5), and a concrete layer (6) are laid sequentially from top to bottom. Below the concrete layer (6), a rammed earth layer (2) is set. The rammed earth layer (2) is formed by pressing the collapsible loess layer (1) using a heavy hammer compaction method.

3. The anti-seepage curtain structure for collapsible loess foundation according to claim 2, characterized in that, The thickness of the concrete layer (6) is 30 cm, the thickness of the red clay layer (4) is 40 cm, and the mortar layer (3) is located around the red clay layer (4).

4. The anti-seepage curtain structure for collapsible loess foundation according to claim 3, characterized in that, The top of the mortar layer (3) is provided with a plurality of grooves (9), and the inside of the grooves (9) is rotatably connected to the rotating cylinder (8) and the roller (10).

5. The anti-seepage curtain structure for collapsible loess foundation according to claim 4, characterized in that, The length of the groove (9) is greater than the length of the rotating cylinder (8), and the sidewall of the groove (9) is arc-shaped, and the bottom end of the rotating cylinder (8) is close to the outlet of the groove (9).

6. The anti-seepage curtain structure for collapsible loess foundation according to claim 1, characterized in that, Both ends of the roller (10) are fixedly connected to the rotating shaft (12), and multiple fixed shafts (11) are installed inside the rotating cylinder (8), with the rotating shaft (12) rotatably connected inside the fixed shaft (11).

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