Comprehensive protection system for wind and sand hazards in high and cold river valleys

Abstract

The embodiment of the utility model provides a comprehensive protection system for wind and sand hazards in alpine valleys, which relates to the technical field of environmental protection, is used for being arranged on the main wind direction side of a railway crossing a river channel, and comprises two sand blocking units and two sand guiding units, the two sand blocking units are distributed on the two sides of the river channel, and the two sand guiding units are distributed on the two sides of the river channel. The two sand guiding units are distributed on the two sides of the river channel and located on the sides, close to the river channel, of the sand blocking units. Each sand blocking unit comprises a sand blocking fence, a sand blocking belt, a blocking and fixing combined belt and a mixed sand fixing belt which are sequentially arranged in the main wind direction, and the mixed sand fixing belts are located on the sides, close to the railway, of the sand blocking belts. The sand guide unit comprises a plurality of sand guide walls arranged at intervals in the main wind direction, and the sand guide walls are used for guiding sand into a river channel. The protection system can comprehensively treat wind and sand hazards of the valley railways in the cold and cold mountainous area according to local conditions, and is good in sand stabilization and sand blocking effect and good in protection effect on the railways along the line.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a comprehensive protection system for sandstorm hazards in high-altitude river valleys. Background Art

[0002] In some harsh environmental regions, such as high-altitude mountain valleys, sandstorms are becoming increasingly severe along railway lines. These problems manifest as wind-blown sand burying tracks, wind-eroded shoulders, corroded track structures, and sandstorms impacting trains, posing a serious threat to safe railway operations. Sand is typically carried by the wind. On the prevailing wind direction of a railway line, severe sand accumulation occurs at the toe of the roadbed, severely impacting the railway's operational lifespan and posing a safety hazard. Sections of railway line crossing rivers are particularly vulnerable to wind-blown sandstorms.

[0003] The inventors discovered during their research that the existing sand and dust protection system has at least the following disadvantages:

[0004] The protection effect on railways in areas where desertification and river environments are combined is poor. Utility Model Content

[0005] The purpose of the present utility model includes, for example, providing a comprehensive protection system for wind and sand hazards, which can comprehensively control wind and sand hazards in river valleys and railways in high-altitude mountainous areas according to local conditions, has good sand fixation and sand blocking effects, and has good protection effects on railways along the line.

[0006] The embodiment of the present utility model can be implemented as follows:

[0007] In a first aspect, the present invention provides a comprehensive protection system for sandstorm hazards in high-altitude river valleys, which is used to be installed on the main wind direction side of a railway crossing a river, comprising:

[0008] Two sand-blocking units and two sand-guiding units, the two sand-blocking units are distributed on both sides of the river channel, and the two sand-guiding units are distributed on both sides of the river channel and are located on the side of the sand-blocking unit close to the river channel; each of the sand-blocking units includes a sand-blocking fence, a sand-blocking belt, a sand-fixing combined belt and a mixed sand-fixing belt arranged in sequence along the main wind direction, and the mixed sand-fixing belt is located on the side of the sand-blocking belt close to the railway; the sand-guiding unit includes a plurality of sand-guiding walls arranged at intervals in the main wind direction, and the sand-guiding walls are used to guide sand into the river channel.

[0009] In an optional embodiment, the sand-blocking fence includes multiple rows of concrete columns and multiple sand-blocking nets, the multiple rows of concrete columns are arranged at intervals in the main wind direction, and the multiple sand-blocking nets are respectively connected to the multiple rows of concrete columns.

[0010] Based on the above scheme, the sand-blocking nets are fixed by concrete columns, and multiple sand-blocking nets are arranged at intervals to form a multi-layer sand-blocking barrier. In addition, sand-blocking nets with different mesh densities can be set according to needs to improve the sand-blocking effect.

[0011] In an optional embodiment, the sand-blocking fence further includes a first oblique cable, a second oblique cable, a first cable and a second cable, the head end of the first column and the tail end of the second column of the same row of adjacent concrete columns are connected by the first oblique cable, and the tail end of the first column and the head end of the second column are connected by the second oblique cable; the head end of the first column and the head end of the second column are connected by the first cable, and the tail end of the first column and the tail end of the second column are connected by the second cable.

[0012] Based on the above solution, the concrete column is not only fixed by being inserted into the ground, but also fixed by the cooperation of the first inclined cable, the second inclined cable, the first cable and the second cable, which form constraints on each other, have good positioning effect, are not easy to topple over, and have a long service life.

[0013] In an optional embodiment, a first limiting protrusion and a second limiting protrusion are provided on the concrete column, and the top end of the first inclined cable and the top end of the second inclined cable are both located on the side of the first limiting protrusion away from the second limiting protrusion, and the first limiting protrusion is used to abut against the first inclined cable and the second inclined cable to limit the first inclined cable and the second inclined cable from sliding toward the bottom of the concrete column; the bottom end of the first inclined cable and the bottom end of the second inclined cable are both located on the side of the second limiting protrusion away from the first limiting protrusion, and the second limiting protrusion is used to abut against the first inclined cable and the second inclined cable to limit the first inclined cable and the second inclined cable from sliding toward the top of the concrete column.

[0014] Based on the above scheme, by setting the first limiting protrusion and the second limiting protrusion, the positions of the first inclined cable, the second inclined cable, the first cable and the second cable relative to the concrete column can be limited, so that after the first inclined cable, the second inclined cable, the first cable and the second cable are tied to the concrete column, they are not easy to slide relative to the concrete column, are not easy to loosen, and have a good fixing effect.

[0015] In an optional embodiment, the sand blocking unit further includes a solid-blocking sand barrier, the multiple rows of concrete columns all penetrate the solid-blocking sand barrier, and the solid-blocking sand barrier is used to be laid on the surface of the quicksand.

[0016] Based on the above scheme, by laying a combined sand barrier, the quicksand can be effectively fixed on the surface, reducing the fluidity of sand particles and making it difficult for them to move to the location of the railway subgrade, thereby achieving a good sand prevention effect.

[0017] In an optional embodiment, the sand-blocking belt and the solidification-blocking belt both include vertical sand barriers, and the mesh densities of the vertical sand barriers of the sand-blocking belt and the solidification-blocking belt are different.

[0018] Based on the above solution, vertical sand barriers can be set up to effectively block wind and sand.

[0019] In an optional embodiment, the mixed sand fixation belt includes sand fixation grids and vegetation arranged in the sand fixation grids.

[0020] Based on the above scheme, the mixed sand-fixing belt is formed by the cooperation of sand-fixing grids and vegetation. The sand-fixing grids block and fix sand, intercept the wind and sand flow, and further fix the quicksand through the roots of vegetation, which has a good sand-fixing effect.

[0021] In an optional embodiment, the sand-fixing grid includes a plurality of sand-fixing piles and a plurality of sand-fixing meshes, the plurality of sand-fixing piles are arranged in a ring shape, and in the arrangement direction of the plurality of sand-fixing piles, a sand-fixing mesh is fixed between adjacent sand-fixing piles.

[0022] Based on the above scheme, the sand fixation grid has a simple structure and is easy to deploy.

[0023] In an optional embodiment, the sand-fixing pile is provided with a hanging bar, the hanging bar includes an introduction section, a connecting section and a fixed section connected in sequence, the introduction section and the fixed section both have an angle with the connecting section, the introduction section and the fixed section extend in opposite directions, one end of the fixed section is fixed to the sand-fixing pile, the introduction section has an angle with the sand-fixing pile, and the end of the introduction section away from the connecting section is spaced apart from the sand-fixing pile; a width-adjustable insertion channel is defined between the connection position of the introduction section and the connecting section and the sand-fixing pile, and the sand-fixing pile, the connecting section and the fixed section cooperate to define a positioning space connected to the insertion channel;

[0024] A clamping ring is provided on the sand-fixing mesh, the hanging strip is inserted into the clamping ring, and a part of the clamping ring is located in the positioning space.

[0025] Based on the above scheme, a plurality of hanging bars can be set on each sand-fixing pile, and correspondingly, a plurality of clasps can be set on the sand-fixing mesh, and each clasp can cooperate with a corresponding hanging bar. When installing the sand-fixing mesh, place the sand-fixing mesh above the hanging bar so that the clasp corresponds to the end of the introduction section. Move the sand-fixing mesh from top to bottom so that the clasp enters the introduction section, and when it reaches the insertion channel, under the squeezing of the clasp, the insertion channel first expands and enlarges. When the clasp passes over the insertion channel, the hanging bar adaptively resets, and the insertion channel becomes smaller, reducing the probability of the clasp falling out of the insertion channel. The clasp is sleeved on the fixed section, and part of the clasp is located in the positioning space. In this way, the installation of the sand-fixing mesh and the sand-fixing pile is completed, and the operation is convenient. When the sand-fixing mesh needs to be replaced, force is applied to the sand-fixing mesh and lifted upward, which is convenient for replacement.

[0026] In an optional embodiment, the wall surface of the sand guide wall has an angle α with the main wind direction, and the value range of α is 25°-35°.

[0027] Based on the above scheme, the angle of the sand guide walls on both sides of the river channel is set to 25°-35°, which has a good sand guide effect.

[0028] The beneficial effects of the embodiments of the present invention include, for example:

[0029] In summary, the comprehensive protection system for sandstorm hazards in high-altitude river valleys provided by this embodiment, by setting a sand-blocking unit and a sand-guiding unit, the two cooperate to achieve a good sand-fixing and sand-blocking effect, reduce the sand accumulated on the roadbed on the side of the main wind direction of the railway, and make the railway service safer, more reliable, and have a long service life. Specifically, the sand-blocking unit includes a sand-blocking fence, a sand-blocking belt, a sand-fixing combined belt, and a mixed sand-fixing belt arranged in sequence along the main wind direction, and the sand-blocking fence is located on the side away from the railway, and correspondingly, the mixed sand-fixing belt is located on the side close to the railway. The sand-blocking fence mainly plays the role of blocking the wind and sand flow, and the mixed sand-fixing belt mainly plays the role of fixing the quicksand. At the same time, it is combined with a plurality of sand-guiding walls arranged on both sides of the river channel. The cooperation of the plurality of sand-guiding walls can block and guide the sand into the river channel. During the flood season, the water flow can be used to carry the sand to protect the railway facilities from being affected. In this way, the protection system of this embodiment adopts a comprehensive prevention and control approach that uses long-range blocking, short-range consolidation, and transportation as auxiliary protection measures, takes engineering measures as the forerunner, and ultimately replaces engineering measures with biological measures. This can effectively improve the situation where railways are affected by wind and sand, help ensure the safety and reliability of railway services, and extend the service life of railways. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 Schematic diagram of a comprehensive protection system for sandstorm hazards in alpine valleys according to an embodiment of the present application;

[0032] Figure 2 A schematic diagram of a sand barrier according to an embodiment of the present application;

[0033] Figure 3 A partial schematic diagram of a sand barrier according to an embodiment of the present application;

[0034] Figure 4 Schematic diagram of the sand fixation grid according to an embodiment of the present application.

[0035] icon:

[0036] 001-Railway; 002-River channel; 003-Main wind direction; 100-Sand-blocking unit; 110-Sand-blocking fence; 111-Concrete column; 112-Sand-blocking net; 113-First inclined cable; 114-Second inclined cable; 115-First cable; 116-Second cable; 117-First limiting protrusion; 118-Second limiting protrusion; 119-Sand-blocking combined with sand barrier; 120-Sand-blocking belt; 130-Sand-blocking combined with sand belt; 140-Mixed sand-fixing belt; 141-Sand-fixing grid; 142-Vegetation; 143-Sand-fixing piles; 144-Sand-fixing net; 145-Suspension bar; 1451-Introduction section; 1452-Connecting section; 1453-Fixed section; 146-Clamping ring; 200-Sand-guiding unit; 210-Sand-guiding wall. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0042] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0043] Please combine Figures 1-4 This embodiment provides a comprehensive sandstorm protection system for high-altitude river valleys, designed to be installed on the main wind direction (003) side of a railway (001) crossing a river (002). The system includes two sand-blocking units (100) and two sand-guiding units (200). The two sand-blocking units (100) are located on either side of the river (002), while the two sand-guiding units (200) are located on either side of the river (002) and on the side of the sand-blocking units (100) closest to the river (002). Each sand-blocking unit (100) includes a sand-blocking fence (110), a sand-blocking belt (120), a combined sand-blocking and sand-fixing belt (130), and a mixed sand-fixing belt (140), arranged sequentially along the main wind direction (003). The mixed sand-fixing belt (140) is located on the side of the sand-blocking belt (120) closest to the railway (001). The sand-guiding units (200) include multiple sand-guiding walls (210) spaced apart in the main wind direction (003). These walls are used to guide sand and gravel into the river (002).

[0044] As described above, the sand blocking and fixing methods of the comprehensive protection system against wind and sand hazards in alpine valleys provided in this embodiment are as follows:

[0045] On the side of the main wind direction 003 of the railway 001, a sand blocking unit 100 and a sand guiding unit 200 are set up. The sand blocking unit 100 includes a sand blocking fence 110, a sand blocking belt 120, a blocking and fixing belt 130, and a mixed sand fixing belt 140 arranged in sequence along the main wind direction 003. The sand blocking fence 110 is located on the side away from the railway 001, and correspondingly, the mixed sand fixing belt 140 is located on the side close to the railway 001. The sand blocking fence 110 mainly plays the role of blocking the wind and sand flow, and the mixed sand fixing belt 140 mainly plays the role of fixing the quicksand. At the same time, the sand guiding unit 200 includes a plurality of sand guiding walls 210. The plurality of sand guiding walls 210 are set on both sides of the river channel 002. The plurality of sand guiding walls 210 can cooperate to block the quicksand and guide it into the river channel 002. During the flood season, the water flow can be used to carry the sand particles to move, protecting the railway facilities from being affected 001. In this way, the protection system of this embodiment adopts a comprehensive prevention and control approach that uses long-range blocking, short-range solidification and transportation as auxiliary protection measures, takes engineering measures as the forerunner, and ultimately replaces engineering measures with biological measures. This can effectively improve the situation of Railway 001 affected by wind and sand, help ensure the safety and reliability of Railway 001 in service, and extend the service life of Railway 001.

[0046] It should be understood that to further enhance the protective capabilities of Railway 001, the embankment of Railway 001 is protected by gravel sloping and widening measures. Degraded grasslands are being enclosed for conservation, supplemented by artificial vegetation restoration technology, to strengthen artificial ecological restoration and eradicate sand damage.

[0047] The following embodiments illustrate the detailed structure of the comprehensive protection system for sandstorm hazards in high-altitude river valleys of the present application by way of examples.

[0048] Please combine Figure 1-Figure 3 In this embodiment, the sand-blocking fence 110 optionally includes multiple rows of concrete columns 111 and multiple sand-blocking nets 112. The multiple rows of concrete columns 111 are arranged at intervals in the main wind direction 003, and the multiple sand-blocking nets 112 are respectively connected to the multiple rows of concrete columns 111. The sand-blocking nets 112 are fixed by the concrete columns 111 and arranged at intervals to form a multi-layer sand-blocking barrier. In addition, the sand-blocking nets 112 can be provided with different mesh densities as needed to improve the sand-blocking effect.

[0049] It should be understood that the number of concrete columns 111 is set as needed, the number of each row is set as needed, and the number of rows of concrete columns 111 is also set as needed, which can be determined according to the size of the area to be sand-blocked.

[0050] In this embodiment, the sand barrier 110 optionally further includes a first inclined cable 113, a second inclined cable 114, a first cable 115, and a second cable 116. The head end of the first column and the tail end of the second column in the same row of adjacent concrete columns 111 are connected via the first inclined cable 113, and the tail end of the first column and the head end of the second column are connected via the second inclined cable 114; the head end of the first column and the head end of the second column are connected via the first cable 115, and the tail end of the first column and the tail end of the second column are connected via the second cable 116. The concrete columns 111 are not only fixed by being inserted into the ground, but are also fixed by the cooperation of the first inclined cable 113, the second inclined cable 114, the first cable 115, and the second cable 116, which form constraints on each other, resulting in good positioning effect, not easy to topple over, and a long service life.

[0051] In addition, an oblique fixing cable may be provided on each concrete column 111 , one end of the oblique fixing cable being connected to the concrete column 111 and the other end of the oblique fixing cable being fixed to the ground, thereby further improving the stability of the concrete column 111 .

[0052] Please combine Figure 3In this embodiment, optionally, a first limiting protrusion 117 and a second limiting protrusion 118 are provided on the concrete column 111, and the top end of the first inclined cable 113 and the top end of the second inclined cable 114 are both located on the side of the first limiting protrusion 117 away from the second limiting protrusion 118, and the first limiting protrusion 117 is used to abut against the first inclined cable 113 and the second inclined cable 114 to limit the first inclined cable 113 and the second inclined cable 114 from sliding toward the bottom of the concrete column 111; the bottom end of the first inclined cable 113 and the bottom end of the second inclined cable 114 are both located on the side of the second limiting protrusion 118 away from the first limiting protrusion 117, and the second limiting protrusion 118 is used to abut against the first inclined cable 113 and the second inclined cable 114 to limit the first inclined cable 113 and the second inclined cable 114 from sliding toward the top of the concrete column 111.

[0053] It should be understood that by providing the first limiting protrusion 117 and the second limiting protrusion 118, the positions of the first inclined cable 113, the second inclined cable 114, the first cable 115 and the second cable 116 relative to the concrete column 111 can be limited, so that after the first inclined cable 113, the second inclined cable 114, the first cable 115 and the second cable 116 are tied to the concrete column 111, they are not easy to slide relative to the concrete column 111, are not easy to loosen, and have a good fixing effect.

[0054] It should be noted that each concrete column 111 is provided with a first limiting protrusion 117 and a second limiting protrusion 118. The first inclined cable 113 and the second inclined cable 114 are respectively limited by the first limiting protrusion 117 and the second limiting protrusion 118. The first cable 115 can be limited by the two first limiting protrusions 117, and the two ends of the first cable 115 can be located on the side of the two first limiting protrusions 117 away from the second limiting protrusions 118. The second cable 116 can be limited by the two second limiting protrusions 118, and the two ends of the second cable 116 are respectively located on the side of the two second limiting protrusions 118 close to the first limiting protrusion 117. The first limiting protrusion 117 can limit the descent of the first cable 115, and the second limiting protrusion 118 can limit the descent of the second cable 116.

[0055] In this embodiment, the sand-blocking unit 100 optionally further includes a solid sand barrier 119. Multiple rows of concrete columns 111 extend through the solid sand barrier 119. The solid sand barrier 119 is intended to be laid on the surface of the shifting sand. It should be understood that the installation of the solid sand barrier 119 effectively secures the accumulated sand to the surface, reducing its mobility and preventing it from being carried by the wind to the location of the railway 001 roadbed, thereby achieving a good sand-blocking effect.

[0056] In this embodiment, optionally, both the sand-blocking belt 120 and the blocking and solidifying belt 130 include vertical sand barriers, and the mesh density of the vertical sand barriers of the sand-blocking belt 120 and the blocking and solidifying belt 130 is different. By setting up the vertical sand barriers, it is possible to effectively block wind and sand.

[0057] In this embodiment, the mixed sand-fixing belt 140 optionally includes sand-fixing grids 141 and vegetation 142 disposed within the sand-fixing grids 141. The mixed sand-fixing belt 140 utilizes the cooperation of the sand-fixing grids 141 and the vegetation 142. The sand-fixing grids 141 block and fix sand, intercepting quicksand, and the roots of the vegetation 142 further fix the sand, resulting in a good sand-fixing effect.

[0058] Please combine Figure 4 Optionally, the sand-fixing grid 141 includes multiple sand-fixing piles 143 and multiple sand-fixing meshes 144. The multiple sand-fixing piles 143 are arranged in a ring, and a sand-fixing mesh 144 is fixed between adjacent sand-fixing piles 143 in the arrangement direction of the multiple sand-fixing piles 143. The sand-fixing grid 141 has a simple structure and is easy to deploy. For example, the number of sand-fixing piles 143 is four, forming a square grid. Each sand-fixing pile 143 is inserted into the ground, and the insertion depth and height of each sand-fixing pile 143 above the ground are set as needed, which provides flexible processing.

[0059] In this embodiment, optionally, a hanging bar 145 is provided on the sand-fixing pile 143, and the hanging bar 145 includes an introduction section 1451, a connecting section 1452 and a fixed section 1453 connected in sequence, the introduction section 1451 and the fixed section 1453 both have an angle with the connecting section 1452, the extension directions of the introduction section 1451 and the fixed section 1453 are opposite, one end of the fixed section 1453 is fixed to the sand-fixing pile 143, the introduction section 1451 has an angle with the sand-fixing pile 143, and the end of the introduction section 1451 away from the connecting section 1452 is spaced from the sand-fixing pile 143; the connection position of the introduction section 1451 and the connecting section 1452 defines a width-adjustable insertion channel between the sand-fixing pile 143, and the sand-fixing pile 143, the connecting section 1452 and the fixed section 1453 cooperate to define a positioning space connected to the insertion channel. A snap ring 146 is provided on the sand-fixing mesh 144 , and the hanging bar 145 is inserted into the snap ring 146 , and part of the snap ring 146 is located in the positioning space.

[0060] It should be understood that multiple suspension bars 145 can be provided on each sand-fixing pile 143, and correspondingly, multiple clasps 146 can be provided on the sand-fixing mesh 144, each clasp 146 being capable of cooperating with a corresponding suspension bar 145. When installing the sand-fixing mesh 144, the sand-fixing mesh 144 is placed above the suspension bars 145 so that the clasps 146 correspond to the ends of the introduction section 1451. The sand-fixing mesh 144 is moved from top to bottom so that the clasps 146 enter the introduction section 1451. When the clasps 146 reach the insertion channel, the insertion channel first expands under the pressure of the clasps 146. When the clasps 146 pass through the insertion channel, the suspension bar 145 adaptively resets, the insertion channel becomes smaller, and the probability of the clasps 146 being dislodged from the insertion channel is reduced. The clasps 146 are then sleeved on the fixing section 1453, and a portion of the clasps 146 is located in the positioning space. In this way, the installation of the sand-fixing mesh 144 and the sand-fixing pile 143 is completed, and the operation is convenient. When the sand-fixing mesh 144 needs to be replaced, force is applied to the sand-fixing mesh 144 and lifted upward, which makes replacement convenient.

[0061] In this embodiment, the sand guide wall 210 optionally forms an angle α with the main wind direction 003. α ranges from 25° to 35°. Setting the angle of the sand guide wall 210 on both sides of the river channel 002 to 25° to 35° improves sand diversion. For example, the angle of the sand guide wall 210 can be set to 25°, 30°, or 35°.

[0062] The comprehensive protection system for sandstorm hazards in high-altitude river valleys provided in this embodiment achieves comprehensive sand prevention and good protection effect by coordinating multiple measures such as sand blocking, sand consolidation and sand diversion.

[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A comprehensive protection system for sandstorm hazards in high-altitude river valleys, which is used to be located on the main wind direction (003) side of a railway (001) crossing a river (002), characterized in that: include: Two sand blocking units (100) and two sand guiding units (200), wherein the two sand blocking units (100) are distributed on both sides of a river channel (002), and the two sand guiding units (200) are distributed on both sides of the river channel (002) and are located on the side of the sand blocking unit (100) close to the river channel (002); each of the sand blocking units (100) comprises a sand blocking fence (110), a sand blocking belt (120), a blocking and fixing combined belt (130), and a mixed sand fixing belt (140) arranged in sequence along a main wind direction (003), and the mixed sand fixing belt (140) is located on the side of the sand blocking belt (120) close to a railway (001); and the sand guiding unit (200) comprises a plurality of sand guiding walls (210) arranged at intervals in the main wind direction (003), and the sand guiding walls (210) are used to guide sand and gravel into the river channel (002).

2. The integrated protection system for sandstorm hazards in alpine valleys according to claim 1 is characterized by: The sand-blocking fence (110) comprises multiple rows of concrete columns (111) and multiple sand-blocking nets (112), wherein the multiple rows of concrete columns (111) are arranged at intervals in the main wind direction (003), and the multiple sand-blocking nets (112) are respectively connected to the multiple rows of concrete columns (111).

3. The integrated protection system for sandstorm hazards in alpine valleys according to claim 2 is characterized by: The sand-blocking fence (110) further includes a first inclined cable (113), a second inclined cable (114), a first cable (115) and a second cable (116); the head end of the first column and the tail end of the second column of the same row of adjacent concrete columns (111) are connected via the first inclined cable (113), and the tail end of the first column and the head end of the second column are connected via the second inclined cable (114); the head end of the first column and the head end of the second column are connected via the first cable (115), and the tail end of the first column and the tail end of the second column are connected via the second cable (116).

4. The integrated protection system for sandstorm hazards in alpine valleys according to claim 3 is characterized by: The concrete column (111) is provided with a first limiting protrusion (117) and a second limiting protrusion (118), the top end of the first inclined cable (113) and the top end of the second inclined cable (114) are both located on the side of the first limiting protrusion (117) away from the second limiting protrusion (118), and the first limiting protrusion (117) is used to abut against the first inclined cable (113) and the second inclined cable (114) to limit the first inclined cable (113) and the second inclined cable (114). 14) slides toward the bottom of the concrete column (111); the bottom end of the first inclined cable (113) and the bottom end of the second inclined cable (114) are both located on the side of the second limiting protrusion (118) away from the first limiting protrusion (117), and the second limiting protrusion (118) is used to abut against the first inclined cable (113) and the second inclined cable (114) to limit the first inclined cable (113) and the second inclined cable (114) from sliding toward the top of the concrete column (111).

5. The integrated protection system for sandstorm hazards in alpine valleys according to claim 2 is characterized by: The sand blocking unit (100) further comprises a blocking and solidifying sand barrier (119), wherein the multiple rows of concrete columns (111) all penetrate the blocking and solidifying sand barrier (119), and the blocking and solidifying sand barrier (119) is used for laying on the surface of the quicksand.

6. The integrated protection system for sandstorm hazards in alpine valleys according to claim 1 is characterized by: The sand-blocking belt (120) and the blocking-solidifying belt (130) both comprise vertical sand barriers, and the vertical sand barriers of the sand-blocking belt (120) and the blocking-solidifying belt (130) have different mesh densities.

7. The integrated protection system for sandstorm hazards in alpine valleys according to claim 1 is characterized by: The mixed sand-fixing belt (140) includes a sand-fixing grid (141) and vegetation (142) arranged in the sand-fixing grid (141).

8. The integrated protection system for sandstorm hazards in alpine valleys according to claim 7 is characterized by: The sand-fixing grid (141) comprises a plurality of sand-fixing piles (143) and a plurality of sand-fixing meshes (144). The plurality of sand-fixing piles (143) are arranged in a circular shape. In the arrangement direction of the plurality of sand-fixing piles (143), a sand-fixing mesh (144) is fixed between adjacent sand-fixing piles (143).

9. The integrated protection system for sandstorm hazards in alpine valleys according to claim 8, characterized in that: The sand-fixing pile (143) is provided with a hanging bar (145), and the hanging bar (145) comprises an introduction section (1451), a connection section (1452) and a fixed section (1453) connected in sequence. The introduction section (1451) and the fixed section (1453) both have an included angle with the connection section (1452). The extension directions of the introduction section (1451) and the fixed section (1453) are opposite. One end of the fixed section (1453) is fixed to the sand-fixing pile (143). The introduction section (1451) and the sand-fixing pile (143) have an included angle, and an end of the introduction section (1451) away from the connecting section (1452) is spaced apart from the sand-fixing pile (143); a width-adjustable insertion channel is defined between the connecting position of the introduction section (1451) and the connecting section (1452) and the sand-fixing pile (143); the sand-fixing pile (143), the connecting section (1452) and the fixing section (1453) cooperate to define a positioning space communicating with the insertion channel; A snap ring (146) is provided on the sand-fixing mesh (144), the hanging strip (145) is inserted into the snap ring (146), and a portion of the snap ring (146) is located in the positioning space.

10. The comprehensive protection system for sandstorm hazards in alpine valleys according to claim 1 is characterized by: The wall surface of the sand guide wall (210) and the main wind direction (003) form an angle α, and the value range of α is 25°-35°.

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