Novel slope flexible supporting structure

Abstract

The utility model discloses a novel slope flexible supporting structure which comprises a step structure, the step structure is formed on the surface of a slope, a slope body drainage structure is arranged on the lower edge of the step structure, a parapet wall structure is arranged on the side, away from the step structure, of the slope body drainage structure, and a drainage ditch is formed in the side, away from the slope body drainage structure, of the parapet wall structure. Two ends of the drainage pipe are respectively communicated with the slope drainage structure and the drainage ditch; a filling layer is arranged on the upper side of the step structure, a slope surface is formed on the upper surface of the filling layer, geogrids and geocells are arranged on the slope surface, and the lower edge of the slope surface is aligned with the upper edge of the parapet wall structure. The utility model has the advantage of being capable of flexibly supporting the side slope, and solves the problems that the rigid support does not allow the supported body to deform, the expansive soil body of the side slope inevitably generates dry shrinkage and wet expansion under the dry-wet cycle action of water, and when the expansion deformation is large and cannot be released, the large expansion pressure is generated to damage the rigid support.

Description

Technical Field

[0001] The utility model belongs to the technical field of slope protection structures, and in particular relates to a novel slope flexible supporting structure. Background Art

[0002] Expansive soil is a highly plastic soil rich in hydrophilic clay minerals (such as montmorillonite and illite). Due to its expansion and contraction characteristics, expansive soil will undergo significant volume changes after absorbing or losing water, which is extremely harmful in highway, railway, water conservancy and other projects. Under natural conditions, the soil of the expansive soil slope continues to expand and contract under the action of the atmospheric dry-wet cycle, and eventually cracks will form. Further infiltration of rainfall will cause the strength of the slope soil to decrease, which is easy to cause shallow, gradual, and repeated slope damage. Since rigid support does not allow the supported body to deform, the expansive soil of the slope will inevitably shrink and swell under the action of the dry-wet cycle of water. When the expansion deformation is large and cannot be released, a large expansion pressure will be generated, causing the rigid support to be damaged. It is for this reason that rigid support bodies can often be seen being sheared, pushed or expanded in expansive soil areas. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a novel flexible slope supporting structure, which has the advantage of being able to provide flexible support for the slope and solves the problems of the prior art.

[0004] The utility model is implemented as follows: a novel flexible slope supporting structure comprises a step structure, wherein the step structure is formed on the surface of the slope, a slope drainage structure is arranged at the lower edge of the step structure, a retaining wall structure is arranged at a side of the slope drainage structure away from the step structure, a drainage ditch is arranged at a side of the retaining wall structure away from the slope drainage structure, a drainage pipe is arranged inside the retaining wall structure, and both ends of the drainage pipe are respectively connected to the slope drainage structure and the drainage ditch; a filling layer is arranged at the upper side of the step structure, a slope surface is formed on the upper surface of the filling layer, a geogrid and a geocell are arranged on the slope surface, and the lower edge of the slope surface is aligned with the upper edge of the retaining wall structure.

[0005] As a preferred embodiment of the utility model, the slope includes a first slope structure, a platform, a second slope structure and a third slope structure arranged in sequence from bottom to top, the first slope structure is provided with a first geogrid and a first geocell, the retaining wall structure is located at the lower side of the first slope structure, and the lower edge of the first slope structure is flush with the upper side of the retaining wall structure, the retaining wall structure and the drainage ditch are arranged side by side; the second slope structure is provided with a second geogrid and a second geocell.

[0006] As a preferred embodiment of the present invention, the slope of the first slope structure is 1:1.75, and the slope of the second slope structure is 1:1.75.

[0007] As a preferred embodiment of the present invention, the slope of the third slope surface structure is smaller than the slope of the first slope surface structure and the slope of the second slope surface structure, and slope protection vegetation is provided on the third slope surface structure.

[0008] As a preferred embodiment of the utility model, a first intercepting ditch is provided on the platform, and a second intercepting ditch is provided on the third slope structure.

[0009] As a preferred embodiment of the present invention, the filling layer is a sand and gravel accumulation layer structure.

[0010] As a preferred embodiment of the utility model, the step structure includes a step surface, two cloths and one membrane, and a gravel layer structure, the step surface is formed on the slope surface, the two cloths and one membrane are located on the step surface, the gravel layer structure is arranged on the upper side of the two cloths and one membrane, and the thickness of the gravel layer structure is 250-500mm.

[0011] As a preferred embodiment of the present invention, the slope of the step structure is 1:1.75.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] On the slope, water can choose to flow into the drainage ditch, or penetrate into the filling layer, and then flow into the slope drainage structure along the step structure, and finally flow into the drainage ditch through the drainage pipe to complete the drainage process. This design can effectively reduce the expansion and contraction of the slope. At the same time, the filling layer can absorb the energy of the slope deformation and play a flexible support role for the slope. The slope is also equipped with geogrids and geocells. In the anti-seepage project of the dam, geogrids can prevent the expansion of the leakage range, improve the overall stability of the dam body, and enhance the deformation resistance of the dam body, reducing the deformation and cracking of the dam body. Geocells are mainly used to reinforce and protect rivers, embankments and river banks. They enhance the stability of the project by enhancing the soil's anti-scouring and anti-sliding capabilities. In addition, geocells have also played a huge role in the protection of mountains and slopes. They can fix and reinforce the soil to prevent the slope from being damaged by erosion, collapse and landslides. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of a novel slope flexible supporting structure provided by an embodiment of the utility model;

[0015] Figure 2 The utility model embodiment provides Figure 1 A schematic diagram of the enlarged structure of part A;

[0016] Figure 3 The utility model embodiment provides Figure 1 A schematic diagram of the enlarged structure of part B;

[0017] Figure 4 The utility model embodiment provides Figure 1 Schematic diagram of the enlarged structure of part C.

[0018] In the figure: 1. step structure; 2. slope drainage structure; 3. retaining wall structure; 4. drainage ditch; 5. drainage pipe; 6. filling layer; 7. slope; 701. first slope structure; 702. platform; 703. second slope structure; 704. third slope structure; 801. first geogrid; 802. second geogrid; 901. first geocell; 902. second geocell; 10. first intercepting ditch; 11. second intercepting ditch; 101. step surface; 102. two cloths and one membrane; 103. gravel layer structure. DETAILED DESCRIPTION

[0019] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0020] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0021] See also Figure 1 A novel flexible slope support structure provided by an embodiment of the utility model comprises a step structure 1, wherein the step structure 1 is formed on the surface of the slope, a slope drainage structure 2 is arranged at the lower edge of the step structure 1, a retaining wall structure 3 is arranged on the side of the slope drainage structure 2 away from the step structure 1, a drainage ditch 4 is arranged on the side of the retaining wall structure 3 away from the slope drainage structure 2, a drainage pipe 5 is arranged inside the retaining wall structure 3, and both ends of the drainage pipe 5 are respectively connected to the slope drainage structure 2 and the drainage ditch 4; a filling layer 6 is arranged on the upper side of the step structure 1, a slope surface 7 is formed on the upper surface of the filling layer 6, a geogrid and a geocell are arranged on the slope surface 7, and the lower edge of the slope surface 7 is aligned with the upper edge of the retaining wall structure 3.

[0022] Through this arrangement, water on the slope surface 7 can flow into the drainage ditch 4 through the slope surface 7, or penetrate into the filling layer 6, fall into the slope drainage structure 2 along the step structure 1, and then flow into the drainage ditch 4 through the drainage pipe 5. The drainage ditch 4 is used to drain the water. Through this arrangement, the expansion and contraction of the slope can be reduced. And the filling layer 6 can absorb the energy of the slope deformation and play a role of flexible support for the slope. Geogrids and geocells are provided on the slope surface 7. In the anti-seepage structure of the dam, the geogrid can prevent the expansion of the leakage range and improve the integrity of the dam body. At the same time, it can also enhance the deformation resistance of the dam body and reduce the deformation and cracking of the dam body. The geocell can be used for the reinforcement and protection of river channels, embankments and river banks, and improve the stability of the project by increasing the anti-scouring and anti-sliding capabilities of the soil. And it is used for the protection of mountains and earth slopes, and prevents erosion, collapse and landslides of the slope surface 7 by fixing and reinforcing the soil. Geocells can also be used for water and soil conservation projects, such as preventing soil erosion, controlling gully erosion, repairing damaged land and restoring vegetation. Exemplarily, the filling layer 6 is a sand and gravel accumulation layer structure, which can absorb the expansion and contraction of the slope and provide flexible support for the slope.

[0023] See also Figure 1-Figure 3 The slope 7 includes a first slope structure 701, a platform 702, a second slope structure 703 and a third slope structure 704 arranged in sequence from bottom to top; the first slope structure 701 is provided with a first geogrid 801 and a first geocell 901, the retaining wall structure 3 is located at the lower side of the first slope structure 701, and the lower edge of the first slope structure 701 is flush with the upper side of the retaining wall structure 3, and the retaining wall structure 3 and the drainage ditch 4 are arranged side by side; the second slope structure 703 is provided with a second geogrid 802 and a second geocell 902.

[0024] Exemplarily, the slope of the first slope structure 701 is 1:1.75, and the slope of the second slope structure 703 is 1:1.75. Setting the slope of slope protection to 1:1.75 has the following advantages: First, enhancing the stability of the slope: Appropriate slope design can effectively enhance the stability of the slope and prevent natural disasters such as landslides and collapses. Second, preventing soil erosion: Appropriate slope design can reduce rainwater scouring and erosion, thereby preventing soil erosion and protecting soil resources. Third, facilitating slope greening: Appropriate slope design can provide favorable conditions for slope greening, promote the growth and coverage of vegetation, and improve the ecological environment quality of the slope.

[0025] Preferably, the slope of the third slope structure 704 is smaller than the slope of the first slope structure 701 and the slope of the second slope structure 703, and the third slope structure 704 is provided with slope protection vegetation. Slope protection vegetation for slope protection has many benefits. For example, plant protection is to utilize the covering effect of vegetation on the slope and the reinforcement effect of plant roots on the slope to protect the roadbed slope from the erosion of atmospheric precipitation and surface runoff. In addition, vegetation can inhibit surface runoff and weaken raindrop splash erosion, thereby controlling soil particle loss and reducing soil and water loss. The root system of vegetation can be closely integrated with the soil layer, and the intertwining of the root system and the root system makes the surface soil form a firm stable layer of different depths, thereby effectively stabilizing the soil layer, fixing the ditch slope, blocking erosion and collapse, and having a mechanical protective effect.

[0026] See also Figure 1 , the platform 702 is provided with a first intercepting ditch 10, and the third slope structure 704 is provided with a second intercepting ditch 11. The intercepting ditch can effectively intercept the runoff and prevent the water flow from scouring the slope 7. When it rains, the runoff of the slope 7 will flow down along the slope. If there is no intercepting ditch to block it, the water flow will scour the slope 7, causing the stability of the slope 7 to be destroyed. The setting of the intercepting ditch can guide the water flow to other places, thereby protecting the stability of the slope.

[0027] See also Figure 4 The step structure 1 includes a step surface 101, two cloths and one membrane 102, and a crushed stone layer structure 103. The step surface 101 is formed on the slope surface, the two cloths and one membrane 102 are located on the step surface 101, and the crushed stone layer structure 103 is arranged on the upper side of the two cloths and one membrane 102. The thickness of the crushed stone layer structure 103 is 250-500mm.

[0028] The step structure 1 can effectively prevent water from penetrating into the slope through its specific structural design. Its working principle is as follows:

[0029] Design of step surface 101: step surface 101 is formed on the surface of the slope. This design first breaks the continuity of the slope, so that water cannot flow directly along the slope surface, thereby reducing the scouring effect of water on the slope.

[0030] Function of two cloths and one membrane 102: two cloths and one membrane 102 are located on the step surface 101. This structure is mainly composed of two layers of cloth and one layer of membrane. The cloth has good water permeability and can allow water to pass through, while the membrane has waterproof properties and can effectively prevent water from passing through. Therefore, the two cloths and one membrane 102 structure can prevent external water from entering the interior of the slope while allowing water to pass through, thus playing a good waterproof role.

[0031] Setting of the gravel layer structure 103: The gravel layer structure 103 is set on the upper side of the two-cloth-one-membrane 102, and its thickness is 250-500mm. The gravel layer has good water permeability and can quickly disperse water to prevent water from accumulating in a certain area. At the same time, the gravel layer can also provide a certain resistance to prevent water from directly scouring the two-cloth-one-membrane 102, thereby protecting the waterproof effect of the two-cloth-one-membrane 102.

[0032] In summary, the step structure 1, through the design of its step surface 101, the waterproof effect of the two cloths and one membrane 102, and the permeability and resistance of the gravel layer, together constitutes an effective barrier to prevent water from penetrating into the slope. This structural design not only takes into account the discharge of water, but also pays attention to the waterproof effect, and is an effective waterproof measure in slope protection projects. Preferably, the slope of the step structure 1 is 1:1.75.

[0033] The working principle of this utility model:

[0034] Water can choose two paths on the slope 7: one is to flow directly into the drainage ditch 4, and the other is to penetrate into the filling layer 6. The filling layer 6 here plays the role of absorbing the deformation energy of the slope, thereby flexibly supporting the slope. In addition, the filling layer 6 is designed as a sand and gravel accumulation layer structure, which can further absorb the expansion and contraction energy of the slope. At the same time, geogrids and geocells are also set on the slope 7. Geogrids are mainly used in the anti-seepage structure of dams, which can prevent the expansion of the leakage range and enhance the integrity and anti-deformation capacity of the dam body. Geocells are widely used in the reinforcement and protection of rivers, embankments and river banks. It enhances the stability of the project by improving the anti-scouring and anti-sliding capabilities of the soil. In addition, geocells also play an important role in the protection of mountains and slopes. By fixing and reinforcing the soil, it can effectively prevent erosion, collapse and landslides on the slope 7. At the same time, in soil and water conservation projects, geocells are also used to prevent soil erosion, control gully erosion, repair damaged land and restore vegetation. In summary, this drainage and support system effectively improves the stability of the slope and embankment and reduces the expansion and contraction of the slope by comprehensively using different geotechnical structures and drainage facilities. At the same time, it can also prevent soil erosion, protect soil structure, and restore vegetation growth, which is of great significance for maintaining ecological balance and human activity safety.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel flexible slope support structure, comprising a step structure (1), characterized in that: The step structure (1) is formed on the surface of the slope, a slope drainage structure (2) is provided at the lower edge of the step structure (1), a retaining wall structure (3) is provided on the side of the slope drainage structure (2) away from the step structure (1), a drainage ditch (4) is provided on the side of the retaining wall structure (3) away from the slope drainage structure (2), a drainage pipe (5) is provided inside the retaining wall structure (3), and two ends of the drainage pipe (5) are respectively connected to the slope drainage structure (2) and the drainage ditch (4); A filling layer (6) is provided on the upper side of the step structure (1), a slope (7) is formed on the upper surface of the filling layer (6), a geogrid and a geocell are provided on the slope (7), and the lower edge of the slope (7) is aligned with the upper edge of the retaining wall structure (3).

2. A new type of slope flexible support structure as claimed in claim 1, characterized in that: The slope (7) comprises a first slope structure (701), a platform (702), a second slope structure (703) and a third slope structure (704) which are arranged in sequence from bottom to top; The first slope structure (701) is provided with a first geogrid (801) and a first geocell (901); the retaining wall structure (3) is located at the lower side of the first slope structure (701); the lower edge of the first slope structure (701) is flush with the upper side of the retaining wall structure (3); and the retaining wall structure (3) and the drainage ditch (4) are arranged side by side; The second slope structure (703) is provided with a second geogrid (802) and a second geocell (902).

3. A new type of slope flexible support structure as claimed in claim 2, characterized in that: The slope of the first slope structure (701) is 1:1.75, and the slope of the second slope structure (703) is 1:1.

75.

4. A new type of slope flexible support structure as claimed in claim 2 or 3, characterized in that: The slope of the third slope structure (704) is smaller than the slope of the first slope structure (701) and the slope of the second slope structure (703), and slope protection vegetation is provided on the third slope structure (704).

5. A new type of slope flexible support structure as claimed in claim 4, characterized in that: The platform (702) is provided with a first intercepting ditch (10), and the third slope structure (704) is provided with a second intercepting ditch (11).

6. A new type of slope flexible support structure as claimed in claim 1, characterized in that: The filling layer (6) is a sand and gravel accumulation layer structure.

7. A new type of slope flexible support structure as claimed in claim 1, characterized in that: The step structure (1) comprises a step surface (101), two cloths and one membrane (102), and a crushed stone layer structure (103); the step surface (101) is formed on the surface of the slope; the two cloths and one membrane (102) are located on the step surface (101); the crushed stone layer structure (103) is arranged on the upper side of the two cloths and one membrane (102); and the crushed stone layer structure (103) has a thickness of 250-500 mm.

8. A new type of slope flexible support structure as claimed in claim 1, characterized in that: The slope of the step structure (1) is 1:1.75.

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