Expansive soil drainage control device for wind power plant project in expansive soil area

Abstract

The utility model discloses an expansive soil drainage control device for a wind power plant project in an expansive soil area, which comprises a core column, the core column is hollow, a core pipe is arranged in the core column, the axis of the core pipe is parallel to the axis of the core column, cement mortar is filled between the core column and the core pipe, and the cement mortar is filled between the core column and the core pipe. A water accumulating part is arranged at the upper end of the core column, a water permeable part is arranged at the lower end of the core column, the water accumulating part is arranged on the ground surface, the water permeable part is arranged below an expansive soil layer, and the water permeable part is communicated with the water accumulating part through the core pipe; the expansive soil seepage device is used for solving the problem of expansive soil, water accumulated on the ground surface permeates into the deep underground position from top to bottom through the core pipe, contact between the water accumulated on the ground surface and the expansive soil layer is avoided, the water permeation and drainage effect on the water accumulated on the ground surface is improved, and therefore deformation and damage of the expansive soil caused by water are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of land engineering prevention and control, in particular to an expansive soil drainage prevention and control device used for wind farm projects in expansive soil areas. Background Art

[0002] After nearly a decade of large-scale development, wind power has expanded its construction areas from Gobi deserts and grasslands with relatively favorable geological conditions to loess, hills, mountains and tidal flats. The increasingly complex construction conditions have led to the diversification of wind farm site terrain, the complexity of foundation conditions and the uncertainty of engineering geological characteristics.

[0003] Expansive soil refers to clayey soil whose clay particles are primarily composed of hydrophilic minerals and exhibit significant characteristics of both swelling upon water absorption and shrinking upon water loss. While typical clayey soils exhibit these characteristics, their deformation is relatively small, in contrast to expansive soils, which exhibit significant deformation, fundamentally different from typical clayey soils. Wind power projects constructed in areas with expansive soil can face challenges, including partial collapse, bulging, or cracking of the subgrade or equipment foundations, due to inadequate protection against expansive soil.

[0004] Although most existing construction methods adopt isolation treatment measures such as artificial laying of isolation materials and natural isolation, such as setting up waterproof layers, to prevent moisture from penetrating into the soil, reduce the amount of water absorption and expansion of the soil, and prevent the erosion and damage of the expansive soil to the project, for outdoor construction areas such as wind farms, under the influence of climate such as rainfall, the isolation effect of isolation materials or natural isolation is limited. The accumulation of a large amount of rainwater on the ground surface will still cause moisture to penetrate into the expansive soil layer, which can easily affect the foundation and other foundations.

[0005] In view of the above-mentioned defects, the inventors of the present invention finally obtained the present invention after a long period of research and practice. Utility Model Content

[0006] In order to solve the above-mentioned technical defects, the technical solution adopted by the present invention is to provide an expansive soil drainage prevention and control device for wind farm projects in expansive soil areas, including a core column, which is hollow, and a core tube is arranged inside the core column, the axis of the core tube is arranged parallel to the axis of the core column, cement mortar is filled between the core column and the core tube, a water accumulation part is arranged at the upper end of the core column, and a water permeable part is arranged at the lower end of the core column, the water accumulation part is arranged on the ground surface, the water permeable part is arranged below the expansive soil layer, and the water permeable part and the water accumulation part are connected through the core tube.

[0007] Preferably, a waterproof layer is provided above the expansive soil layer, an annular barrier disc is provided outside the core column, the inner ring of the barrier disc is sealed with the outer wall of the core column, and the barrier disc is provided on the upper surface of the waterproof layer.

[0008] Preferably, a filling hole is provided at the lower section of the core column, and the filling hole is provided above the water-permeable portion. When cement mortar is filled between the core column and the core tube, the cement mortar flows to the position of the filling hole and the external soil of the core column is filled through the filling hole to form a reinforcement plate.

[0009] Preferably, a plurality of filling holes are provided in a ring shape with the axis of the core column as the center.

[0010] Preferably, the water-permeable portion includes a fixing plate, which is fixedly arranged inside the core column and arranged between the lower end of the core column and the filling hole, the outer edge of the fixing plate is sealedly connected to the inner wall of the core column, a fixing hole is provided on the fixing plate, the core tube is provided in the fixing hole, and the outer wall of the core tube is sealedly connected to the fixing plate.

[0011] Preferably, the water accumulation portion includes a cover plate and a water accumulation plate, the cover plate is configured as a circular plate, and a snap ring is provided at the edge of the cover plate, the inner diameter of the snap ring is consistent with the outer diameter of the upper end cross-section of the core column, the snap ring is sleeved on the upper end of the core column, a plurality of filter holes are provided on the cover plate, the outer edge of the water accumulation plate is fixedly provided on the cover plate, a water accumulation cavity is formed between the water accumulation plate and the cover plate, the water accumulation plate is provided in the snap ring, a collecting hole is provided on the water accumulation plate, and the upper end of the core tube is provided in the collecting hole.

[0012] Preferably, the filter holes are arranged in a ring shape with the circle of the cover plate as the center, and the filter holes are all connected to the water accumulation cavity.

[0013] Preferably, the core column and the core tube are coaxially arranged, and the clamping ring and the upper end of the core column are detachably connected via threads.

[0014] Preferably, the water accumulation plate is configured to be cylindrical or spherical, the collecting hole is configured to be at the bottom of the water accumulation plate, and the aperture of the collecting hole is configured to match the outer diameter of the core tube.

[0015] Preferably, the maximum diameter of the cross section of the water accumulation plate is smaller than the inner diameter of the core column.

[0016] Compared with the prior art, the beneficial effect of the present invention is that: the present invention is used to improve the problem of expansive soil, and the surface water penetrates from top to bottom into the deep underground through the core pipe, avoiding the contact between the surface water and the expansive soil layer, increasing the permeable drainage effect of the surface water, and thus reducing the deformation and damage of the expansive soil caused by water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural view of the expansive soil drainage prevention and control device used in a wind farm project in an expansive soil area;

[0018] Figure 2 A front view of the lower end structure of the core column;

[0019] Figure 3 A front view of the upper end structure of the core column;

[0020] Figure 4 This is a front structural view of the water accumulation part;

[0021] Figure 5 This is a structural view of the back side of the water accumulation part.

[0022] The numbers in the figure represent:

[0023] 1-core column; 2-core tube; 3-cement mortar; 4-water accumulation part; 5-water permeable part; 6-blocking disc; 11-filling hole; 41-cover plate; 42-water accumulation plate; 43-clamping ring; 44-filter hole; 45-collecting hole. DETAILED DESCRIPTION

[0024] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] like Figure 1 As shown, Figure 1 This is a structural view of the expansive soil drainage prevention and control device used for wind farm projects in expansive soil areas.

[0027] The expansive soil drainage prevention and control device for wind farm projects in expansive soil areas of the present invention includes a core column 1, which is hollow, and a core tube 2 is arranged inside the core column 1. The axis of the core tube 2 is arranged parallel to the axis of the core column 1, and cement mortar 3 is filled between the core column 1 and the core tube 2 to ensure that the position of the core tube 2 in the core column 1 is stable. The upper end of the core column 1 is provided with a water accumulation part 4, and the lower end of the core column 1 is provided with a permeable part 5. The water accumulation part 4 is arranged on the ground surface for collecting surface water, and the permeable part 5 is arranged below the expansive soil layer. The permeable part 5 and the water accumulation part 4 are connected through the core tube 2, so that the surface water can be directly drained through the core tube 2 to the deep underground below the expansive soil layer, avoiding contact between the surface water and the expansive soil layer, and increasing the permeable drainage effect of the surface water.

[0028] If a waterproof layer is provided above the expansive soil layer, a circular barrier disc 6 is provided on the outside of the core column 1. The inner ring of the barrier disc 6 is sealed with the outer wall of the core column 1. The barrier disc 6 is provided on the upper surface of the waterproof layer to reduce the influence of the core column 1 on the waterproof effect of the waterproof layer itself.

[0029] The lower section of the core column 1 is provided with a filling hole 11, and the filling hole 11 is arranged above the permeable portion 5. When the cement mortar 3 is filled between the core column 1 and the core tube 2, the cement mortar 3 flows to the position of the filling hole 11 and the external soil of the core column 1 is filled through the filling hole 11 to form a reinforcement disk, thereby solidifying the peripheral area of ​​the lower section of the core column 1. While ensuring the stability of the position of the core column 1 in the ground, the formation of the reinforcement disk can also effectively block the liquid deep underground from penetrating into the expansive soil layer, thereby avoiding the water absorption and expansion of the expansive soil layer, and increasing the treatment effect of the expansive soil.

[0030] Generally, a plurality of filling holes 11 are provided in an annular shape with the axis of the core column 1 as the center, thereby ensuring that the reinforcing disk of the annular structure is formed to improve a certain barrier effect.

[0031] The utility model is used to improve the problem of expansive soil, and the surface water penetrates from top to bottom into the deep underground through the core tube 2, thereby reducing the deformation and damage of the expansive soil caused by water. The double-layer structure of the column tube can effectively improve the service life of the utility model and effectively block the contact between the surface water and the expansive soil layer. At the same time, through the pouring and molding of cement mortar 3, even if the core tube 2 or the core column 1 is damaged, the utility model maintains a certain original structure. When one of the core tube 2 or the core column 1 is sealed intact, the utility model still has the effect of blocking the contact between the expansive soil layer and the surface water and increasing permeable drainage.

[0032] The barrier plate 6 is provided on the periphery of the upper section of the core column 1 to avoid damaging the waterproof effect of the waterproof layer and prevent the water flow above the waterproof layer from contacting the expansive soil layer. The reinforcement plate formed on the lower section of the core column 1 can also play a certain blocking role in the infiltration of liquid deep underground into the expansive soil layer, ensuring that the surface expansive soil will not be deformed and damaged due to the infiltration of water.

[0033] Example 2

[0034] like Figure 2 As shown, Figure 2 It is a front view of the lower end structure of the core column; the permeable part 5 includes a fixing plate, which is fixedly arranged inside the core column 1, and the fixing plate and the bottom of the core column 1 form a permeable cavity. The lower end of the core tube 2 is arranged in the permeable cavity, and the fixing plate is arranged between the lower end of the core column 1 and the filling hole 11. The outer edge of the fixing plate is sealed with the inner wall of the core column 1, and a fixing hole is provided on the fixing plate. The core tube 2 is arranged in the fixing hole, and the outer wall of the core tube 2 is sealed with the fixing plate, so that the cement mortar 3 filled by the upper end of the core column 1 is blocked at the fixing plate and flows out of the filling hole 11 to form the reinforcement plate. The lower end of the core tube 2 is also blocked by the fixing plate because it is arranged below the fixing plate to ensure the smooth discharge of surface water to deep underground. At the same time, due to the fixing effect of the fixing plate on the core tube 2, the position of the core tube 2 in the core column 1 can be guaranteed to be stable before grouting.

[0035] like Figure 3 As shown, Figure 3 It is a front view of the upper end structure of the core column; the water accumulation part 4 includes a cover plate 41 and a water accumulation plate 42, the cover plate 41 is set as a circular plate, and a clamping ring 43 is provided on the edge of the cover plate 41, the inner diameter of the clamping ring 43 is consistent with the outer diameter of the upper end cross section of the core column 1, and the cover plate 41 can be fixed to the upper end of the core column 1 by sleeve-mounting the clamping ring 43 on the upper end of the core column 1. A plurality of filter holes 44 are provided on the cover plate 41, and the water accumulation plate 42 is provided with a plurality of filter holes 44. The outer edge of the core tube 2 is fixedly mounted on the cover plate 41, and a water accumulation cavity is formed between the water accumulation plate 42 and the cover plate 41. The water accumulation plate 42 is disposed in the clamping ring 43. A collecting hole 45 is provided on the water accumulation plate 42. The upper end of the core tube 2 is disposed in the collecting hole 45. Surface water enters the water accumulation cavity through the filter holes 44 and is guided by the water accumulation plate 42 to the collecting hole 45 and is discharged downward by the core tube 2 to the deep underground.

[0036] like Figure 4 、 Figure 5 As shown, Figure 4 This is a front structural view of the water accumulation part; Figure 5Preferably, the filter holes 44 are arranged in a ring shape with the circular shape of the cover plate 41 as the center, and the filter holes 44 are connected to the water storage cavity, thereby ensuring that surface water enters the water storage cavity through the filter holes 44.

[0037] By providing the cover plate 41 with the filtering hole 44, the upper end of the utility model can be ensured to be flat without causing obvious sinking of the setting position. The filtering hole 44 can also filter debris to prevent debris from entering the core tube 2 and causing blockage of the core tube 2.

[0038] Preferably, the core column 1 and the core tube 2 are coaxially arranged, and the clamping ring 43 and the upper end of the core column 1 can be detachably connected by a thread, thereby ensuring that the connection of the clamping ring 43 to the upper end of the core column 1 is stable, and at the same time, the position of the upper end of the core tube 2 in the collecting hole 45 can be adjusted by rotating the core column 1 and the clamping ring 43, ensuring that the upper end of the core tube 2 is located at the lowest point in the water accumulation chamber, so as to facilitate the collection of water to the upper end of the core tube 2.

[0039] Generally, the water accumulation plate 42 is set to be cylindrical or spherical, and the collecting hole 45 is set at the bottom of the water accumulation plate 42. The aperture of the collecting hole 45 is matched with the outer diameter of the core tube 2, thereby ensuring that the water accumulation plate 42 guides the water flow to the position of the collecting hole 45.

[0040] The maximum cross-sectional diameter of the water accumulation plate 42 is slightly smaller than the inner diameter of the core column 1 , thereby ensuring that the water accumulation cavity has a larger guided storage volume while achieving smooth placement of the water accumulation plate 42 in the core column 1 .

[0041] During the specific installation of the present invention, a hole is first drilled at the corresponding position of the waterproof layer, and the core column 1 and the core tube 2 are inserted into the hole drilled in the ground together. The blocking plate 6 and the waterproof layer form a snap-fit ​​position to ensure that the core column 1 is inserted into the appropriate position, and cement mortar 3 is filled between the core column 1 and the core tube 2. The cement mortar 3 is blocked by the fixing plate at the bottom of the core column 1 and flows out from the filling hole 11 to form the reinforcement plate to achieve the fixation of the core column 1 in the ground and the fixation of the relative position between the core column 1 and the core tube 2. After the grouting is completed, the water accumulation part 4 is covered on the top of the core column 1, and other building structures are constructed on the waterproof layer to ensure that the cover plate 41 is flush with the ground or slightly lower than the ground surface, thereby realizing the collection and guidance of surface water accumulation by the present invention. It is worth noting that when grouting is carried out, the upper end of the core tube 2 can be sealed first and then opened after the grouting is completed to prevent grouting from entering the inside of the core tube 2.

[0042] The above description is merely a preferred embodiment of the present invention and is intended to be illustrative rather than restrictive of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the present invention within the spirit and scope of the claims, and all of these changes will fall within the scope of protection of the present invention.

Claims

1. An expansive soil drainage prevention and control device for a wind farm project in an expansive soil area, characterized in that: The utility model comprises a core column, which is hollow, and a core tube is arranged inside the core column, the axis of the core tube is arranged parallel to the axis of the core column, cement mortar is filled between the core column and the core tube, a water accumulation part is arranged at the upper end of the core column, and a water permeable part is arranged at the lower end of the core column, the water accumulation part is arranged on the ground surface, the water permeable part is arranged below the expansive soil layer, and the water permeable part and the water accumulation part are connected through the core tube.

2. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 1, characterized in that: A waterproof layer is provided above the expansive soil layer, a circular barrier disc is provided outside the core column, the inner ring of the barrier disc is sealed with the outer wall of the core column, and the barrier disc is provided on the upper surface of the waterproof layer.

3. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 1, characterized in that: A filling hole is provided at the lower section of the core column, and the filling hole is provided above the water-permeable portion. When cement mortar is filled between the core column and the core tube, the cement mortar flows to the position of the filling hole and the external soil of the core column is filled through the filling hole to form a reinforcement plate.

4. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 3, characterized in that: The filling holes are provided in a plurality of ring shapes with the axis of the core column as the center.

5. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 3, characterized in that: The water-permeable part includes a fixing plate, which is fixedly arranged inside the core column and arranged between the lower end of the core column and the filling hole. The outer edge of the fixing plate is sealed with the inner wall of the core column. A fixing hole is provided on the fixing plate, the core tube is arranged in the fixing hole, and the outer wall of the core tube is sealed with the fixing plate.

6. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 5, characterized in that: The water accumulation portion includes a cover plate and a water accumulation plate. The cover plate is configured as a circular plate, and a snap ring is provided at the edge of the cover plate. The inner diameter of the snap ring is consistent with the outer diameter of the cross-section of the upper end of the core column. The snap ring is sleeved on the upper end of the core column. A plurality of filter holes are provided on the cover plate. The outer edge of the water accumulation plate is fixedly provided on the cover plate. A water accumulation cavity is formed between the water accumulation plate and the cover plate. The water accumulation plate is provided in the snap ring. A collecting hole is provided on the water accumulation plate, and the upper end of the core tube is provided in the collecting hole.

7. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 6, characterized in that: The filter holes are arranged in a ring shape with the circle of the cover plate as the center, and the filter holes are all communicated with the water accumulation cavity.

8. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 6, characterized in that: The core column and the core tube are coaxially arranged, and the clamping ring and the upper end of the core column are detachably connected through threads.

9. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 6, characterized in that: The water accumulation plate is configured to be cylindrical or spherical, the collecting hole is configured to be provided at the bottom of the water accumulation plate, and the aperture of the collecting hole is configured to match the outer diameter of the core tube.

10. The expansive soil drainage prevention and control device for a wind farm project in an expansive soil area according to claim 9, characterized in that: The maximum diameter of the cross section of the water accumulation plate is smaller than the inner diameter of the core column.

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