Sand blocking structure used along railway in desertification grassland area
By designing the structure of multiple sand blocking units, using hollow top components and mortise and tenon connections, the poor sand blocking effect and environmental damage problems along the railways in the sandy grassland areas are solved, efficient sand prevention and convenient sand cleaning are achieved, and maintenance is reduced Cost and environmental impact.
Patent Information
- Application Number
- CN202411382592.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2024-12-27
AI Technical Summary
The existing sand barriers are not effective in blocking sand along railways in desertified grassland areas, are bulky and costly, and require regular cleaning and transportation of accumulated sand, which has a destructive impact on the environment.
A structure consisting of multiple sand blocking units is designed, each sand blocking unit consisting of a basic component, a plurality of intermediate components and a top component. The top component has a hollow structure and a ventilation inlet is provided on the windward surface, between adjacent units It forms ventilation gaps, which can collect and store sand, enhance structural strength, and facilitate assembly and disassembly through mortise and tenon structures.
It realizes effective sand protection and convenient sand cleaning, reduces maintenance costs, improves the wind resistance and durability of the structure, reduces environmental damage, and can be easily expanded and installed.
Smart Images
Figure CN119195025A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rail transportation, in particular to a sand retaining structure used along a railway in a desertified grassland area. Background Art
[0002] At present, my country's sand control measures mainly include biological sand control and engineering sand control. However, biological sand control has high requirements on local hydrogeology and is time-consuming, while the establishment of engineering sand control has low environmental requirements and is convenient and quick.
[0003] At present, common sand-blocking measures mainly include high-standing PE net sand barriers and concrete slab sand retaining walls. Among them, the high-standing PE net sand barrier has low strength, which leads to poor sand-blocking effect in the case of strong winds or large amounts of quicksand. The concrete slab retaining wall is heavy, which makes it difficult to build and move, increasing a lot of construction and maintenance costs. The design of the high-standing PE net sand barrier usually has a certain mesh, which makes its sand-blocking effect relatively poor. The concrete slab sand retaining wall has no mesh, so the sand-blocking effect is better, but its rigidity is high and cannot effectively adapt to geological deformation and sand displacement. The wall is easily damaged or tilted under geological activities. In addition, although the vegetation coverage of the desertified grassland is extremely low, the land use nature is still basic grassland. The concrete columns and concrete slab sand retaining walls of the high-standing PE net sand barrier may indeed occupy a certain amount of basic grassland land. The main problems of the existing sand barriers are poor sand-blocking effect, bulky, high cost, damage to grassland land, etc., and the accumulated sand on the windward side needs to be regularly cleared. Summary of the invention
[0004] An embodiment of the present invention provides a sand retaining structure for use along a railway in a desertified grassland area, which can achieve effective sand prevention and convenient sand clearing.
[0005] According to an embodiment of the present invention, there is provided a sand retaining structure for use along a railway in a desertified grassland area, which comprises a plurality of sand retaining units interconnected laterally, each of the sand retaining units comprising:
[0006] Basic components;
[0007] A plurality of intermediate components connected to each other up and down, wherein the lowest intermediate component is connected and mounted on the top of the base component;
[0008] A top component, which is mounted on the top of the uppermost middle component and includes a hollow top inner cavity and a top cavity inlet connected to the top inner cavity is arranged on the windward surface;
[0009] Wherein, the intermediate components of adjacent sand retaining units are separated from each other laterally to form vertically extending ventilation gaps.
[0010] Preferably, in any embodiment,
[0011] The base component at least partially has a shape that becomes thicker from top to bottom.
[0012] Preferably, in any embodiment,
[0013] At least one of the intermediate components comprises a hollow inner cavity, and a inner cavity inlet communicating with the inner cavity is arranged on the windward surface.
[0014] Preferably, in any embodiment,
[0015] The lowermost intermediate component is mounted on the top of the base component through a mortise and tenon structure connection.
[0016] Preferably, in any embodiment,
[0017] The plurality of intermediate components are connected to each other up and down through mortise and tenon structures.
[0018] Preferably, in any embodiment,
[0019] The top component is mounted on the top of the uppermost middle component by a mortise and tenon structure.
[0020] Preferably, in any embodiment,
[0021] At least one of the intermediate components in each of the sand retaining units is laterally connected to at least one of the intermediate components aligned in an adjacent sand retaining unit through a side connection structure.
[0022] Preferably, in any embodiment,
[0023] The side connection structure includes a side mortise and tenon structure.
[0024] Preferably, in any embodiment,
[0025] The plurality of sand blocking units include first sand blocking units and second sand blocking units which are alternately arranged in the lateral direction and connected to each other;
[0026] The middle component of the first sand retaining unit includes a side convex portion convex in the lateral direction;
[0027] The middle component of the second sand retaining unit includes a side recessed portion that is recessed in the lateral direction;
[0028] The side protrusions and the side recesses are aligned with each other and have matching shapes, so that after the first sand retaining unit and the second sand retaining unit are installed in place, the side protrusions are inserted and fixed in the side recesses.
[0029] Preferably, in any embodiment,
[0030] The side protrusion of the middle component of the first sand retaining unit includes two side protrusions arranged on opposite sides of the middle component;
[0031] The side recessed portion of the middle component of the second sand blocking unit includes two side recessed portions provided on opposite sides of the middle component.
[0032] The sand retaining structure for use along railways in desertified grassland areas provided by the embodiments of the present invention can achieve effective sand prevention and convenient sand clearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.
[0034] Figure 1 The present invention is a schematic structural diagram of a sand retaining structure used along a railway in a desertified grassland area according to an embodiment of the present invention. DETAILED DESCRIPTION
[0035] The technical solutions of various embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0036] An embodiment of the present invention provides a sand retaining structure for use along a railway in a desertified grassland area, which can achieve effective sand prevention and convenient sand clearing.
[0037] According to an embodiment of the present invention, there is provided a sand retaining structure for use along a railway in a desertified grassland area, which comprises a plurality of sand retaining units interconnected laterally, each of the sand retaining units comprising:
[0038] Basic components;
[0039] A plurality of intermediate components connected to each other up and down, wherein the lowest intermediate component is connected and mounted on the top of the base component;
[0040] A top component, which is mounted on the top of the uppermost middle component and includes a hollow top inner cavity and a top cavity inlet connected to the top inner cavity is arranged on the windward surface;
[0041] Wherein, the intermediate components of adjacent sand retaining units are separated from each other laterally to form vertically extending ventilation gaps.
[0042] In this way, each sand retaining unit is composed of a base component, a plurality of intermediate components and a top component which are connected in sequence from bottom to top, and a plurality of sand retaining units are connected laterally to form a sand retaining structure. The top component includes a top inner cavity and collects solid sand particles (e.g., which can be stored in the top inner cavity) in the windward side of the wind-sand flow through the top cavity inlet, which can not only reduce the sand content in the downstream wind-sand flow, but also store the collected sand particles in the hollow inner cavity to increase the overall weight of the sand retaining structure, thereby effectively improving the structural strength and resistance to strong winds. When necessary (e.g., when the sand particles stored in the top component fill the top inner cavity), the sand particles in the top component can be discharged to empty the inner cavity for continuing to collect sand particles thereafter, thereby not only providing a firm and reliable sand retaining structure, but also conveniently cleaning the accumulated sand particles.
[0043] In addition, it should be noted that vertically extending ventilation gaps are formed between adjacent sand retaining units to allow wind to pass through. On the one hand, this is beneficial to the separation of the gas phase (such as air) and the solid phase (such as sand particles) of the wind and sand flow, so that the sand content in the wind and sand flow after passing through the sand retaining structure is significantly reduced. On the other hand, it can also appropriately reduce the pressure from the wind and sand flow to protect the sand retaining structure from damage, which is particularly beneficial in the event of strong winds.
[0044] In actual application environments, the sand retaining structure for railways along desertified grassland areas described in the present invention can be infinitely expanded as needed through modular assembly of multiple sand retaining units, so as to be arranged along both sides of the railway track to form a sand retaining barrier, which is not only easy to disassemble and assemble, but also has strong compatibility and scalability. Such a structure can not only block or reduce the threat posed by ground quicksand and sand and dust in wind-blown sand flows entering the railway track area (even accumulating on the train track), but also can store a large amount of sand inside through the cavity design, thereby significantly reducing the frequency of maintenance personnel cleaning up the accumulated sand, and reducing the maintenance workload and maintenance costs in railway operations.
[0045] It can be seen that the sand retaining structure provided by the embodiments of the present invention for use along railways in desertified grassland areas can achieve effective sand prevention and convenient sand clearing.
[0046] At present, the sand prevention measures along the railway are mainly sand barriers. Compared with other application environments (such as Gobi and desert areas), along the railway in the desertified grassland area, it is necessary not only to prevent the invasion of wind and sand into the track area to interfere with or even threaten the train operation, but also to promptly remove the accumulated sand that is blocked by the sand barriers along the line, so as to avoid excessive sand accumulation from oppressing and damaging the sand barriers and causing sand prevention failure. However, at present, the sand accumulation problem is usually solved by manual transportation, and the transportation distance is often far, so a lot of manpower and material resources have to be consumed to clean up the sand regularly and in a timely manner. In addition, although the desertified grassland area has some similarities with the desert area in terms of landform, it still belongs to the basic grassland in terms of land use attributes, and therefore has higher requirements in terms of sand prevention and environmental protection.
[0047] The most important thing in preventing sand along the railway in the desertified grassland area is to solve the problem of sand accumulation. Through the sand retaining structure for the railway in the desertified grassland area provided by the present invention, the inner cavity structure of the sand retaining unit can store a large amount of sand accumulation, so that the interval time of cleaning and transporting the sand accumulation can be significantly extended, for example, it can be extended by more than 1 year compared with the prior art, thereby effectively saving the relevant manpower and material costs. On the other hand, due to the storage of sand accumulation in the sand retaining unit, its overall weight and structural strength are effectively increased, so that the resistance and durability of the sand retaining structure to the invasion of wind and sand (especially advantageous in strong wind conditions) can be significantly improved, and the risk of damage caused by excessive load of the sand retaining structure is reduced. In addition, the sand retaining unit itself or its components (such as the top component, the middle component, or the foundation component) can be filled with sand through the inner cavity, and can be assembled and installed in a detachable manner as needed. In this case, when the sand accumulation is full, the sand retaining unit itself or its components can be cleaned accordingly to discharge the sand accumulation, or can also be used as a container for accommodating the sand accumulation during the sand transportation. It can be seen that the sand retaining structure provided by the present invention for use along the railway in the desertified grassland area has important practical significance and environmental protection value.
[0048] Optionally, in any embodiment, the sand retaining structure used along the railway in the desertified grassland area is a sand retaining structure used in railway engineering.
[0049] Preferably, in any embodiment, the foundation component at least partially has a shape that becomes thicker from top to bottom. In this way, the foundation component can be firmly installed, for example, installed on the ground.
[0050] Optionally, in any embodiment, the base component at least partially has a shape that gradually becomes thicker from top to bottom.
[0051] Optionally, in any embodiment, the plurality of intermediate components have the same outer dimensions, so that they can be mass-produced according to the same dimensions, thus simplifying the process and manufacturing cost.
[0052] Optionally, in any embodiment, the intermediate component has an appearance that tapers from bottom to top, so that the plurality of intermediate components form an appearance of a truncated cone (such as a cone or a pyramid) that tapers from bottom to top. In this way, the overall structural strength and wind resistance can be improved, which is particularly advantageous in a strong wind environment.
[0053] Optionally, in any embodiment, the middle component has a shape that tapers from bottom to top, so that the plurality of middle components form a shape of a quadrangular pyramid that tapers from bottom to top. In this way, a dam-like sand retaining structure with a slope can be formed on the windward side, which can improve the overall structural strength and wind resistance, which is particularly advantageous in a strong wind environment.
[0054] Optionally, in any embodiment, the foundation components are connected and fixed to each other in the lateral direction. In this way, the foundation components of a plurality of sand retaining units can be connected to each other as one, thereby improving the overall stability.
[0055] Optionally, in any embodiment, the top component can be detachably mounted on the top of the middle component. In this way, when sand needs to be cleaned, the top component can be removed from the middle component to facilitate sand cleaning; or, when accumulated sand needs to be transported, the top component can be removed from the middle component and used as a container for transporting accumulated sand (correspondingly, another top component with an empty inner cavity can be installed on the middle component as a replacement).
[0056] Optionally, in any embodiment, the bottom of the top member is provided with a sand discharge port. Like this, when cleaning up sand grains when needed, there is no need to remove the top member from the intermediate member, but can easily carry out sand clearing operation via the sand discharge port.
[0057] Optionally, in any embodiment, the sand discharge port of the top component is arranged on the side opposite to the windward surface.
[0058] Optionally, in any embodiment, the sand discharge port of the top component is provided with a cover, a plug, a valve, or other mechanism capable of selective opening and closing.
[0059] Preferably, in any embodiment, at least one of the intermediate components includes a hollow middle inner cavity, and a middle cavity entrance connected to the middle inner cavity is provided on the windward side. In this way, similar to the top cavity entrance of the top inner cavity of the top component, the middle cavity entrance of the middle inner cavity of the intermediate component can also be used to collect solid sand particles in the wind-blown sand flow on the windward side (e.g., can be stored in the middle inner cavity), which can not only reduce the sand content in the downstream wind-blown sand flow, but also store the collected sand particles in the hollow inner cavity, which can also increase the overall weight of the sand retaining structure, thereby effectively improving the structural strength and resistance to strong winds. When necessary (e.g., when the sand particles stored in the intermediate component fill the middle inner cavity), the sand particles in the intermediate component can be discharged to empty the inner cavity for continuing to collect sand particles thereafter, thereby not only providing a firm and reliable sand retaining structure, but also conveniently cleaning the accumulated sand particles.
[0060] Optionally, in any embodiment, the bottom of the intermediate component provided with the middle inner cavity is provided with a sand discharge port. Like this, when cleaning up sand grains when needed, there is no need to remove the intermediate component, but can easily carry out sand clearing operation via the sand discharge port.
[0061] Optionally, in any embodiment, the sand discharge port of the intermediate component is arranged on the side opposite to the windward surface.
[0062] Optionally, in any embodiment, the sand discharge port of the intermediate component is provided with a cover, a plug, a valve, or other mechanism capable of selective opening and closing.
[0063] Optionally, in any embodiment, at least one of the middle components includes a hollow middle inner cavity, and the middle inner cavity is connected to the top inner cavity of the top component. In this way, the top inner cavity and at least one middle inner cavity connected thereto below can together form a larger sand storage space, and when necessary (for example, when the sand stored in the top component fills the top inner cavity), the sand in the sand storage space can be discharged to empty the inner cavity for subsequent collection of sand, thereby providing a firm and reliable sand retaining structure and conveniently cleaning the accumulated sand.
[0064] Optionally, in any embodiment, the top component can be detachably mounted on the top of the middle component, and the middle components are detachably connected to each other. In this way, when sand is to be cleaned, the top component and the related middle component can be removed to facilitate the sand cleaning operation; or, when accumulated sand needs to be transported, the top component and the related middle component can be removed and used as a container for transporting accumulated sand (correspondingly, another top component and the related middle component whose inner cavity has been emptied can be installed as a replacement).
[0065] Optionally, in any embodiment, the middle component is detachably mounted to the base component. In this way, when sand is to be cleaned, the top component and all the middle components can be removed to facilitate the sand cleaning operation; or, when accumulated sand needs to be transported, the top component and all the middle components can be removed and used as containers for transporting accumulated sand (correspondingly, another top component with an empty inner cavity and another middle component can be mounted to the base component as an alternative).
[0066] Optionally, in any embodiment, the bottom of the lowermost intermediate component provided with the middle inner cavity is provided with a sand discharge port. Like this, when cleaning up sand grains when needed, there is no need to remove the top component and the intermediate component, but can conveniently carry out sand clearing operation via the sand discharge port.
[0067] Optionally, in any embodiment, the sand discharge port of the intermediate component is arranged on the side opposite to the windward surface.
[0068] Optionally, in any embodiment, the sand discharge port of the intermediate component is provided with a cover, a plug, a valve, or other mechanism capable of selective opening and closing.
[0069] Optionally, in any embodiment, the foundation component includes a hollow bottom inner cavity, and a bottom cavity entrance connected to the bottom inner cavity is provided on the windward side. Like this, similar to the top cavity entrance of the top inner cavity of the top component or the middle cavity entrance of the middle inner cavity of the middle component, the bottom cavity entrance of the bottom inner cavity of the foundation component can also be used to collect the solid phase sand grains (such as can be stored in the bottom inner cavity) of the windward side of the sand flow, which can not only reduce the sand content in the downstream sand flow, but also store the collected sand grains in the hollow inner cavity, which can also increase the overall weight of the sand retaining structure, thereby effectively improving the structural strength and the resistance to strong winds. When needed (such as when the sand grains stored in the foundation component are full), the sand grains in the bottom inner cavity can be discharged to empty the inner cavity for continuing to collect sand grains thereafter, thereby not only providing a firm and reliable sand retaining structure, but also conveniently cleaning the accumulated sand grains.
[0070] Optionally, in any embodiment, the lowermost middle component includes a hollow middle inner cavity and a middle cavity entrance connected to the middle inner cavity is arranged on the windward side, and the base component includes a hollow bottom inner cavity and the bottom inner cavity is connected to the middle inner cavity above. In this way, the bottom inner cavity and the middle inner cavity connected above it together form a larger sand storage space, and when needed (for example, when the sand stored in the middle component is full), the sand in the sand storage space can be discharged to empty the inner cavity for further sand collection, thereby not only providing a firm and reliable sand retaining structure, but also conveniently cleaning the accumulated sand.
[0071] Optionally, in any embodiment, the bottom of the bottom inner cavity is provided with a sand discharge port. In this way, when cleaning sand grains when needed, sand clearing operation can be conveniently performed via the sand discharge port.
[0072] Optionally, in any embodiment, the sand discharge port of the foundation component is arranged on the side opposite to the windward surface.
[0073] Optionally, in any embodiment, the sand discharge port of the base component is provided with a cover, a plug, a valve, or other mechanism capable of selective opening and closing.
[0074] Preferably, in any embodiment, the lowermost intermediate component is mounted on the top of the base component by a mortise and tenon structural connection.
[0075] Preferably, in any embodiment, the plurality of intermediate components are connected to each other vertically through a mortise and tenon structure.
[0076] Preferably, in any embodiment, the top component is mounted on the top of the uppermost middle component by a mortise and tenon structure.
[0077] Preferably, in any embodiment, at least one of the intermediate components in each of the sand retaining units is laterally connected to at least one of the intermediate components aligned in an adjacent sand retaining unit via a side connection structure.
[0078] Preferably, in any embodiment, the side connection structure comprises a side mortise and tenon structure.
[0079] Optionally, in any embodiment, the mortise and tenon structure (such as the mortise and tenon structure between the top component and the middle component, between the middle components, between the middle component and the base component, or the side mortise and tenon structure) may include a groove (such as a dovetail groove) and a convex ridge of a corresponding shape. In this way, when connecting or installing through the mortise and tenon structure, the convex ridge can be inserted into the groove along the extending direction of the groove to be connected in place.
[0080] Optionally, in any embodiment, the groove in the mortise and tenon structure is a dovetail groove whose notch is narrower than the space in the groove. In this way, the convex ridge can be inserted into the dovetail groove and locked in place.
[0081] Optionally, in any embodiment, the groove in the mortise and tenon structure extends in a direction parallel to the windward surface, so as to reduce or prevent sand particles in the wind and sand flow from entering the groove.
[0082] Optionally, in any embodiment, the surface of the sand retaining unit facing the sand flow (e.g., the windward surface) at least partially has a shape that is convex toward the sand flow. Such a convex surface can improve the structural strength, especially in the case of strong winds. It should be understood that the convex surface can be the surface of any component of the sand retaining unit facing the sand flow, such as the convex surface of the top component, or the middle component, or the base component (e.g., the convex windward surface).
[0083] Preferably, in any embodiment,
[0084] The plurality of sand blocking units include first sand blocking units and second sand blocking units which are alternately arranged in the lateral direction and connected to each other;
[0085] The middle component of the first sand retaining unit includes a side convex portion convex in the lateral direction;
[0086] The middle component of the second sand retaining unit includes a side recessed portion that is recessed in the lateral direction;
[0087] The side protrusions and the side recesses are aligned with each other and have matching shapes, so that after the first sand retaining unit and the second sand retaining unit are installed in place, the side protrusions are inserted and fixed in the side recesses.
[0088] Preferably, in any embodiment,
[0089] The side protrusion of the middle component of the first sand retaining unit includes two side protrusions arranged on opposite sides of the middle component;
[0090] The side recessed portion of the middle component of the second sand blocking unit includes two side recessed portions provided on opposite sides of the middle component.
[0091] Optionally, in any embodiment, the middle component includes a lateral protrusion on the left side and a lateral concave portion on the right side, or includes a lateral concave portion on the left side and a lateral protrusion on the right side. In this way, each middle component can be matched and connected with the lateral concave portion of the adjacent aligned middle component through its lateral protrusion, and can be matched and connected with the lateral protrusion portion of the adjacent aligned middle component on the other side through its lateral concave portion, thereby realizing the lateral connection of adjacent middle components and the sand retaining unit.
[0092] Figure 1 This is a schematic diagram of a sand retaining structure for use along a railway line in a desertified grassland area according to an embodiment of the present invention. Figure 1 In the embodiment shown, a sand retaining structure for use along a railway line in a desertified grassland area can be seen, which includes a plurality of sand retaining units ( Figure 1 exemplarily showing three sand blocking units), each of which comprises:
[0093] Base component 100;
[0094] Multiple intermediate components ( Figure 1 exemplarily showing three intermediate components 301, 302, 303), which are connected to each other up and down, wherein the lowermost intermediate component 303 is connected and mounted on the top of the base component;
[0095] A top component 500, which is mounted on the top of the uppermost middle component 301 and includes a hollow top inner cavity and a top cavity inlet 505 connected to the top inner cavity is provided on the windward surface;
[0096] Wherein, the intermediate components of adjacent sand retaining units are separated from each other laterally to form vertically extending ventilation gaps.
[0097] exist Figure 1 It can also be seen in the illustrated embodiment that the middle component 301 may also be provided with a middle cavity opening on the windward surface thereof which is connected to the inner cavity thereof so as to collect sand particles in the wind-blown sand flow.
[0098] exist Figure 1 It can also be seen in the illustrated embodiment that adjacent aligned intermediate components of adjacent sand retaining units can be connected to each other via a mortise and tenon structure (eg corresponding mating protrusions and recesses).
[0099] The sand retaining structure for use along the railway in the desertified grassland area provided by the present invention is a new type of box-type sand retaining wall structure, which is formed by connecting a plurality of sand retaining units (monomers) to each other, and the inside and between the sand retaining units can be firmly connected by a mortise and tenon structure (or a concave-convex matching structure). Each sand retaining unit can be hollow to store sand collected from the wind, so that the weight of the sand retaining unit can be increased to improve the overall structural strength and firmness, thereby better preventing the invasion of wind and sand. The sand retaining structure can have at least one of the following advantages:
[0100] 1) It can be made of lightweight and corrosion-resistant materials (such as plastic, such as PVC material), has excellent weather resistance, corrosion resistance and lightness, and is very suitable for use in harsh environments such as desertified grasslands.
[0101] 2) The sand retaining unit adopts a hollow box design. Each box can be an independent sand retaining unit. They can be connected and combined to form a continuous sand retaining wall to solve the sand accumulation on the windward side. It is not only light in weight and easy to install, but also can better take into account sand and wind prevention, getting rid of the contradiction that the existing technical equipment is too bulky or has poor sand prevention effect.
[0102] 3) The accumulated sand can be directly poured into the inner cavity of the sand retaining unit (such as a PVC hollow box), eliminating the need to regularly clean the sand barrier, greatly reducing maintenance costs and the need for manual intervention, making the management of the sand retaining wall more convenient.
[0103] 4.) It adopts an assembled structure, which is fast to install, easy to construct, light in weight, can be mass-produced and reused, and the PVC material can be recycled and reused, which meets environmental protection requirements.
[0104] 5) By effectively blocking wind and sand, it can not only protect the operating environment along the railway to ensure railway driving safety, but also help protect the grassland ecological environment and promote sustainable development.
[0105] The sand retaining structure for use along railways in desertified grassland areas provided by the embodiments of the present invention can achieve effective sand prevention and convenient sand clearing.
[0106] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is 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 the process, method, article or equipment including a series of elements not only includes these elements, but also includes other elements not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the sentence "comprise a ..." do not exclude the existence of other identical factors in the process, method, article or equipment including the elements.
[0107] In the description of multiple elements herein, multiple parallel features connected by "and / or" refer to one or more (or one or more) of these parallel features. For example, "the first element and / or the second element" means: one or more of the first element and the second element, that is, only the first element, or only the second element, or the first element and the second element (both exist at the same time).
[0108] The various embodiments provided in the present invention can be combined with each other as needed. For example, the features of any two, three or more embodiments can be combined with each other to form a new embodiment of the present invention. This is also within the scope of protection of the present invention, unless otherwise stated or technically inconsistent and cannot be implemented.
[0109] The above description is only an exemplary embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A sand retaining structure for use along railways in desertified grassland areas, characterized in that: It comprises a plurality of sand retaining units connected to each other laterally, each of the sand retaining units comprising: Basic components; A plurality of intermediate components connected to each other up and down, wherein the lowest intermediate component is connected and mounted on the top of the base component; A top component, which is mounted on the top of the uppermost middle component and includes a hollow top inner cavity and a top cavity inlet connected to the top inner cavity is arranged on the windward surface; Wherein, the intermediate components of adjacent sand retaining units are separated from each other laterally to form vertically extending ventilation gaps.
2. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: The base component at least partially has a shape that becomes thicker from top to bottom.
3. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: At least one of the intermediate components comprises a hollow inner cavity, and a inner cavity inlet communicating with the inner cavity is arranged on the windward surface.
4. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: The lowermost intermediate component is mounted on the top of the base component through a mortise and tenon structure connection.
5. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: The plurality of intermediate components are connected to each other up and down through mortise and tenon structures.
6. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: The top component is mounted on the top of the uppermost middle component by a mortise and tenon structure.
7. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: At least one of the intermediate components in each of the sand retaining units is laterally connected to at least one of the intermediate components aligned in an adjacent sand retaining unit through a side connection structure.
8. The sand retaining structure for use along railways in desertified grassland areas as claimed in claim 7, characterized in that: The side connection structure includes a side mortise and tenon structure.
9. The sand retaining structure for use along railways in desertified grassland areas according to claim 1, characterized in that: The plurality of sand blocking units include first sand blocking units and second sand blocking units that are alternately arranged in the lateral direction and connected to each other; The middle component of the first sand retaining unit includes a side convex portion convex in the lateral direction; The middle component of the second sand retaining unit includes a side recessed portion that is recessed in the lateral direction; The side protrusions and the side recesses are aligned with each other and have matching shapes, so that after the first sand retaining unit and the second sand retaining unit are installed in place, the side protrusions are inserted and fixed in the side recesses.
10. The sand retaining structure for use along railways in desertified grassland areas as claimed in claim 9, characterized in that: The side protrusion of the middle component of the first sand retaining unit includes two side protrusions arranged on opposite sides of the middle component; The side recessed portion of the middle component of the second sand blocking unit includes two side recessed portions provided on opposite sides of the middle component.