Expansive soil slope prevention and control structure for wind power plant project in expansive soil area

Abstract

The utility model discloses an expansive soil side slope prevention and control structure for a wind power plant project in an expansive soil area, which comprises a vegetation protection layer, a fixed fence layer and an anchoring part, the vegetation protection layer is laid on the slope surface of the side slope, the fixed fence layer is arranged on the vegetation protection layer, one end of the anchoring part is fixedly arranged in the expansive soil side slope, and the other end of the anchoring part is connected with the fixed fence layer; the vegetation protection layer comprises a plurality of vegetation bags, the multiple vegetation bags are laid on the slope surface of the side slope along the horizontal straight line to form layered fixing layers, and the multiple fixing layers are laid upwards in a stacked mode from the bottom of the slope surface of the side slope along the slope surface of the side slope to form the vegetation protection layer; the anchoring part, the vegetation protection layer, the fixed fence layer and the slope soil body are connected into a whole, the advantages of rigid supporting and flexible supporting are considered, the overall deformation coordination capacity of the structure is excellent, slope surface protection, deep skid resistance and ecological management of the expansive soil slope are achieved at the same time, long-term stability of the whole slope is guaranteed, and the service life of the slope is prolonged. Therefore, smooth construction of a wind power plant project in an expansive soil area is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of land engineering prevention and control, in particular to an expansive soil slope prevention and control structure used for a wind farm project in an expansive soil area. 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 diversity of wind farm site terrain, the complexity of foundation conditions and the uncertainty of engineering geological characteristics.

[0003] Expansive soil refers to clay soil in which the clay component is mainly composed of hydrophilic minerals and has two characteristics: significant swelling when absorbing water and significant shrinkage when losing water. General clay soil has the characteristics of swelling when absorbing water and shrinkage when losing water, but its deformation is small. The deformation characteristics of expansive soil are more significant, which is fundamentally different from general clay soil. When constructing wind power projects in expansive soil areas, both the wind turbine foundation at the fixed end of the wind turbine unit and the roads used for equipment transportation and wind turbine installation in the wind farm will form expansive soil slopes during and after construction.

[0004] Due to the characteristics of expansive soil, after experiencing multiple water absorption expansion, water loss shrinkage and cracking, the strength decreases significantly, which leads to the instability and damage of the expansive soil slope, thus affecting the effective use of wind turbines and roads within the wind farm, and easily making it impossible to successfully construct wind farm projects in expansive soil areas.

[0005] In view of the above-mentioned defects, the inventor 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 technical defects, the technical solution adopted by the utility model is to provide an expansive soil slope prevention and control structure for a wind farm project in an expansive soil area, comprising a vegetation protection layer, a fixed barrier layer and an anchor, wherein the vegetation protection layer is laid on the slope surface, the fixed barrier layer is arranged on the vegetation protection layer, one end of the anchor is fixedly arranged in the expansive soil slope, and the other end is connected to the fixed barrier layer;

[0007] The vegetation protection layer includes a plurality of vegetation bags, and a plurality of the vegetation bags are laid along a horizontal straight line on the slope surface at different heights to form a layered fixed layer. The plurality of fixed layers are stacked and laid upward from the bottom of the slope surface along the slope surface to cover the slope surface to form the vegetation protection layer.

[0008] Preferably, overlapping areas are provided between adjacent vegetation bags in the same fixed layer and between vegetation bags in adjacent layers.

[0009] Preferably, the fixed railing layer includes transverse partitions and longitudinal partitions, the transverse partitions and the longitudinal partitions are arranged perpendicular to each other, the transverse partitions extend horizontally and straightly along the laying direction of the corresponding fixed layer, and the longitudinal partitions extend straightly along the inclination direction of the slope surface, thereby forming a grid-shaped fixed railing layer, and the transverse partitions are fixedly connected to the anchors.

[0010] Preferably, the anchor comprises a rod body, a pad and a fixing nut, the rod body is connected to the fixed railing layer, and the end of the rod body connected to the fixed railing layer is threadedly connected to the fixing nut, a sleeve is installed at the end of the rod body arranged in the expansive soil slope, cement mortar is poured into the end of the rod body through the sleeve, and the pad is sleeved on the end of the rod body and arranged between the fixing nut and the fixed railing layer.

[0011] Preferably, the cross-bar includes a first limit plate, a second limit plate and a connecting plate, the first limit plate and the second limit plate are respectively arranged on both sides of the connecting plate, the extension direction of the first limit plate, the second limit plate and the connecting plate is consistent with the extension direction of the cross-bar, so that the cross-section of the cross-bar is U-shaped, the first limit plate and the second limit plate are vertically arranged, the first limit plate is horizontally arranged, and the connecting plate is connected to the rod body.

[0012] Preferably, a connecting hole is provided on the connecting plate, and a diameter of the connecting hole is larger than a diameter of the rod body.

[0013] Preferably, the pad is a metal plate with an elastic layer on one side, the elastic layer is made of rubber, and the elastic layer is arranged in contact with the connecting plate.

[0014] Preferably, the expansive soil slope control structure for wind farm projects in expansive soil areas also includes an intercepting ditch and a drainage ditch, the intercepting ditch is arranged on the top surface of the expansive soil slope, and the drainage ditch is arranged on the bottom surface of the expansive soil slope, a connecting channel is arranged in the longitudinal partition rod, and the two ends of the longitudinal partition rod are respectively connected to the intercepting ditch and the drainage ditch.

[0015] Preferably, the cross section of the longitudinal partition rod is set to be U-shaped, and the cross section of the longitudinal partition rod opens upward, thereby forming the connecting channel.

[0016] Preferably, a fixing plate is provided on the longitudinal partition rod, the fixing plate is provided corresponding to the transverse partition rod, a connecting pin is provided on the fixing plate, a fixing hole is provided on the connecting plate of the transverse partition rod, the longitudinal partition rod is provided below the transverse partition rod, and the connecting pin is provided in the corresponding fixing hole.

[0017] Compared with the prior art, the beneficial effect of the utility model is that the utility model is connected to the slope soil into a whole through the anchor, the vegetation protection layer, and the fixed railing layer, taking into account the advantages of rigid support and flexible support, and the overall deformation coordination ability of the structure is excellent. At the same time, it realizes the slope surface protection, deep anti-skid and ecological management of the expansive soil slope, ensuring the long-term stability of the entire slope, thereby ensuring the smooth construction of the wind farm project in the expansive soil area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural side view of the expansive soil slope control structure used for a wind farm project in an expansive soil area;

[0019] Figure 2 It is a structural front view of the expansive soil slope prevention and control structure used for the wind farm project in the expansive soil area;

[0020] Figure 3 is a structural view of the anchor;

[0021] Figure 4 This is a view of the connection structure between the transverse partition rod and the longitudinal partition rod.

[0022] The numbers in the figure represent:

[0023] 1-vegetation protection layer; 2-fixed railing layer; 3-anchor; 4-intercepting ditch; 5-drainage ditch; 11-vegetation bag; 21-transverse partition rod; 22-longitudinal partition rod; 31-rod body; 32-pad; 33-fixing nut; 34-sleeve; 211-first limiting plate; 212-second limiting plate; 213-connecting plate; 221-fixing plate; 222-connecting pin. DETAILED DESCRIPTION

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

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 As shown, Figure 1 A structural side view of the expansive soil slope control structure used for a wind farm project in an expansive soil area; Figure 2 It is a structural front view of the expansive soil slope control structure used for the wind farm project in the expansive soil area.

[0027] The expansive soil slope control structure for wind farm projects in expansive soil areas described in the utility model comprises a vegetation protection layer 1, a fixed fence layer 2 and an anchor 3. The vegetation protection layer 1 is laid on the slope surface, the fixed fence layer 2 is arranged on the vegetation protection layer 1 to reinforce the stability of the vegetation protection layer 1 on the slope surface, one end of the anchor 3 is fixedly arranged in the expansive soil slope, and the other end is connected to the fixed fence layer 2, thereby ensuring the stability of the position of the fixed fence layer 2 on the expansive soil slope.

[0028] The vegetation protection layer 1 includes a plurality of vegetation bags 11. A plurality of the vegetation bags 11 are laid along a horizontal straight line on the slope surface at different heights to form a layered fixed layer. The plurality of fixed layers are stacked and laid upward from the bottom of the slope surface along the slope surface to cover the slope surface to form the vegetation protection layer 1.

[0029] Preferably, the vegetation bags 11 are generally of a structure with a thicker center portion and thinner edges, so that adjacent vegetation bags 11 in the same fixed layer and adjacent layers of vegetation bags 11 can be stacked at the edges, that is, an overlapping area of ​​10 cm is provided between adjacent vegetation bags 11 in the same fixed layer and adjacent layers of vegetation bags 11, thereby improving the stability of the connection between adjacent vegetation bags 11.

[0030] The vegetation bag 11 is filled with soil, grass seeds and fertilizer for the growth of grass seeds. Due to the restriction of the bag body of the vegetation bag 11 on the internal soil, a pile with a certain shape can be formed. At the same time, due to the material setting of the bag body itself, the stacked multiple vegetation bags 11 form a stable soil surface. The growth of vegetation in the vegetation bag 11 also forms an effective fixing effect on the soil surface, thereby forming a certain fixing and protective effect on the slope surface. The vegetation bag 11 has high tensile strength and certain ductility. The stacking method can allow the slope surface expansive soil to produce a certain deformation and release the expansion force. At the same time, the overlapping and fixed structure setting can limit the development of slope cracks and stabilize the slope surface soil layer structure.

[0031] Preferably, the fixed fence layer 2 includes a transverse partition bar 21 and a longitudinal partition bar 22, the transverse partition bar 21 and the longitudinal partition bar 22 are arranged perpendicular to each other, the transverse partition bar extends horizontally and linearly along the laying direction of the corresponding fixed layer, and the longitudinal partition bar 22 extends linearly along the inclined direction of the slope surface, thereby forming a grid-like fixed fence layer 2, and the transverse partition bar is fixedly connected to the anchor 3. By arranging the grid-like fixed fence layer 2 on the surface of the vegetation protection layer 1, the position stability of each vegetation bag 11 can be further enhanced.

[0032] like Figure 3 As shown, Figure 3The structural view of the anchor 3; the anchor 3 includes a rod 31, a pad 32 and a fixing nut 33, the rod 31 is connected to the fixed fence layer 2, and the end of the rod 31 connected to the fixed fence layer 2 is threadedly connected to the fixing nut 33, and a casing is provided in the expansive soil slope

[0033] The end of the rod body 31 disposed in the expansive soil slope is installed with a sleeve 34 to prevent the rod body 31 from rusting. Cement mortar is poured into the end of the rod body 31 by the sleeve 34, so that the rod body 31 and the surrounding rock / soil are connected as a whole at the end position of the sleeve 34 in the expansive soil slope. The pad 32 is sleeved on the end of the rod body 31 and is disposed between the fixing nut 33 and the fixing railing layer 2 to increase the fixing contact area between the anchor 3 and the fixing railing layer 2, thereby ensuring that the connection state between the anchor 3 and the fixing railing layer 2 is stable.

[0034] The vegetation protection layer 1 is laid out by the vegetation bags 11 to form a layered uneven surface, which increases the roughness of the slope. The stems and leaves of the vegetation grown in the vegetation bags 11 can weaken the impact of rainwater and reduce the runoff, thereby effectively resisting the erosion of the surface soil by rainwater. At the same time, it also effectively blocks the penetration of rainwater into the interior of the expansive soil slope, avoiding the failure of the surface soil layer of the expansive soil slope due to erosion by rainwater and water absorption and expansion.

[0035] The utility model connects the slope soil into a whole through the anchor 3, the vegetation protection layer 1, and the fixed fence layer 2, taking into account the advantages of rigid support and flexible support, and the overall deformation coordination ability of the structure is excellent. At the same time, it realizes the slope surface protection, deep anti-skid and ecological management of the expansive soil slope, ensures the long-term stability of the slope as a whole, thereby ensuring the smooth construction of the wind farm project in the expansive soil area.

[0036] Embodiment 2

[0037] The cross-bar 21 includes a first limit plate 211, a second limit plate 212 and a connecting plate 213. The first limit plate 211 and the second limit plate 212 are respectively arranged on both sides of the connecting plate 213. The extension direction of the first limit plate 211, the second limit plate 212 and the connecting plate 213 is consistent with the extension direction of the cross-bar 21, so that the cross-section of the cross-bar 21 is U-shaped. The first limit plate 211 and the second limit plate 212 are vertically arranged, the first limit plate 211 is horizontally arranged, and the connecting plate 213 is connected to the rod body 31.

[0038] The cross-bar 21 is arranged between two adjacent fixed layers, the first limiting plate 211 compacts the lower fixed layer of the two adjacent fixed layers from top to bottom, and the second limiting plate 212 limits and fixes the upper fixed layer of the two adjacent fixed layers from the side, thereby improving the overall stability of the vegetation protection layer 1.

[0039] The connecting plate 213 is provided with a connecting hole, the diameter of which is larger than the diameter of the rod body 31 , so as to ensure that the rod body 31 forms a certain angle with the connecting plate 213 and can be smoothly inserted into the connecting hole to be connected with the fixing nut 33 .

[0040] The pad 32 is a metal plate with an elastic layer on one side, and the elastic layer can be made of rubber. The elastic layer is arranged in contact with the connecting plate 213, so as to ensure that when the rod body 31 and the connecting plate 213 appear at a certain tilt angle, the pad 32 can still be fitted and fixed to the connecting plate 213, thereby improving the applicability during on-site installation.

[0041] Embodiment 3

[0042] The expansive soil slope prevention and control structure for the wind farm project in the expansive soil area also includes a cut-off ditch 4 and a drainage ditch 5. The cut-off ditch 4 is arranged on the top surface of the expansive soil slope, and the drainage ditch 5 is arranged on the bottom surface of the expansive soil slope. A connecting passage is arranged in the longitudinal partition rod 22, and the two ends of the longitudinal partition rod 22 are respectively connected with the cut-off ditch 4 and the drainage ditch 5. The cut-off ditch 4 can prevent the water on the upper surface of the expansive soil slope, i.e., the top surface of the slope, from flowing down from the expansive soil slope, and a large amount of water can be prevented from penetrating into the inside of the expansive soil slope. The longitudinal partition rod 22 connects the cut-off ditch 4 and the drainage ditch 5 respectively arranged above and below through the connecting passage, so that the water on the top surface of the slope can be gathered by the cut-off ditch 4 and then flow down through the connecting passage to the drainage ditch 5 and then discharged, thereby reducing the amount of rainwater penetrating from the top surface of the slope and the expansive soil slope into the expansive soil, and reducing the water absorption deformation of the expansive soil slope.

[0043] Preferably, the cross-section of the longitudinal partition rod 22 is set to be U-shaped, and the cross-section of the longitudinal partition rod 22 opens upward, thereby forming the connecting channel to realize the drainage operation of the intercepting ditch 4 to the drainage ditch 5. Generally, a waterproof layer is laid inside the intercepting ditch 4 to the drainage ditch 5 to prevent accumulated water from penetrating into the soil layer.

[0044] like Figure 4 As shown, Figure 4The figure is a view of the connection structure of the transverse partition bar and the longitudinal partition bar. The longitudinal partition bar 22 is provided with a fixing plate 221, and the fixing plate 221 is provided corresponding to the transverse partition bar 21. The fixing plate 221 is provided with a connecting pin 222. The connecting plate 213 of the transverse partition bar 21 is provided with a fixing hole. The longitudinal partition bar 22 is provided below the transverse partition bar 21. The transverse partition bar 21 and the longitudinal partition bar 22 can be fixedly connected by inserting the connecting pin 222 into the fixing hole. At the same time, the fixing of the two ends of the longitudinal partition bar 22 and the fixing of the transverse partition bar 21 by the anchor 3 can realize the stable setting of the fixed railing layer 2.

[0045] Generally, the longitudinal partition rod 22 is provided with two fixing plates 221 corresponding to one transverse partition rod 21, and the two fixing plates 221 are symmetrically arranged on both sides of the longitudinal partition rod 22. The connecting pins 222 on the two fixing plates 221 are respectively inserted into the two fixing holes corresponding to the transverse partition rod 21, so as to achieve a stable connection between the longitudinal partition rod 22 and the transverse partition rod 21, and at the same time further improve the stability of the vertical state of the longitudinal partition rod 22 and the transverse partition rod 21.

[0046] The above is only a preferred embodiment of the utility model, which is only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made within the spirit and scope defined by the claims of the utility model, but they will all fall within the scope of protection of the utility model.

Claims

1. An expansive soil slope control structure for a wind farm project in an expansive soil area, characterized in that: It comprises a vegetation protection layer, a fixed barrier layer and an anchor, wherein the vegetation protection layer is laid on the slope surface, the fixed barrier layer is arranged on the vegetation protection layer, one end of the anchor is fixedly arranged in the expansive soil slope, and the other end is connected to the fixed barrier layer; The vegetation protection layer includes a plurality of vegetation bags, and a plurality of the vegetation bags are laid along a horizontal straight line on the slope surface to form a layered fixed layer. The plurality of fixed layers are stacked and laid upward from the bottom of the slope surface along the slope surface to cover the slope surface to form the vegetation protection layer.

2. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 1, characterized in that: There is overlap between adjacent vegetation bags in the same fixed layer and between vegetation bags in adjacent layers.

3. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 1, characterized in that: The fixed barrier layer includes transverse partitions and longitudinal partitions, which are arranged perpendicular to each other. The transverse partitions extend horizontally and straightly along the laying direction of the fixed layer, and the longitudinal partitions extend straightly along the inclination direction of the slope surface, thereby forming a grid-shaped fixed barrier layer. The transverse partitions are fixedly connected to the anchors.

4. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 3, characterized in that: The anchoring piece comprises a rod body, a pad and a fixing nut. The rod body is connected to the fixing railing layer, and the end of the rod body connected to the fixing railing layer is threadedly connected to the fixing nut. A sleeve is installed at the end of the rod body arranged in the expansive soil slope, and cement mortar is poured into the end of the rod body through the sleeve. The pad is sleeved on the end of the rod body and is arranged between the fixing nut and the fixing railing layer.

5. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 4, characterized in that: The cross-bar includes a first limit plate, a second limit plate and a connecting plate. The first limit plate and the second limit plate are respectively arranged on both sides of the connecting plate. The extension direction of the first limit plate, the second limit plate and the connecting plate is consistent with the extension direction of the cross-bar, so that the cross-section of the cross-bar is U-shaped. The first limit plate and the second limit plate are vertically arranged, the first limit plate is horizontally arranged, and the connecting plate is connected to the rod body.

6. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 5, characterized in that: The connecting plate is provided with a connecting hole, and the diameter of the connecting hole is larger than the diameter of the rod body.

7. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 6, characterized in that: The pad is a metal plate with an elastic layer on one side, the elastic layer is made of rubber, and the elastic layer is arranged in contact with the connecting plate.

8. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 5, characterized in that: The expansive soil slope control structure used for wind farm projects in expansive soil areas also includes an intercepting ditch and a drainage ditch. The intercepting ditch is arranged on the top surface of the expansive soil slope, and the drainage ditch is arranged on the bottom surface of the expansive soil slope. A connecting channel is arranged in the longitudinal partition rod, and the two ends of the longitudinal partition rod are respectively connected to the intercepting ditch and the drainage ditch.

9. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 8, characterized in that: The cross section of the longitudinal partition rod is set to be U-shaped, and the cross section of the longitudinal partition rod opens upward, thereby forming the communication channel.

10. The expansive soil slope control structure for a wind farm project in an expansive soil area according to claim 9, characterized in that: A fixing plate is arranged on the longitudinal partition rod, the fixing plate is arranged corresponding to the transverse partition rod, a connecting pin is arranged on the fixing plate, a fixing hole is arranged on the connecting plate of the transverse partition rod, the longitudinal partition rod is arranged below the transverse partition rod, and the connecting pin is arranged in the corresponding fixing hole.

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