CN112030791A

CN112030791A - Wind and sand prevention device with inclined plane net prevention structure and roadbed wind and sand protection system

Info

Publication number: CN112030791A
Application number: CN202010700798.6A
Authority: CN
Inventors: 肖建华; 姚正毅; 牛清河; 屈建军; 马茜茜
Original assignee: Northwest Institute of Eco Environment and Resources of CAS
Current assignee: Northwest Institute of Eco Environment and Resources of CAS
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-12-04

Abstract

The embodiment of the invention provides a wind and sand prevention device with an inclined plane net blocking structure and a roadbed wind and sand prevention system, wherein the wind and sand prevention device comprises a blocking part and a net blocking part arranged above the blocking part; the blocking part comprises a plurality of fixed stand columns arranged at intervals and a blocking body arranged between two adjacent fixed stand columns; the net blocking part comprises a net blocking part and a bracket component arranged corresponding to the fixed upright post; the bracket component is including being windward side support and the leeward side support that the contained angle set up each other, hinder the net and set up in two adjacent windward side support and two adjacent the surface of leeward side support to form inclined plane and hinder the net structure. According to the wind and sand prevention device with the inclined plane net blocking structure and the roadbed wind and sand protection system, the wind and sand flows are guided to change the flow direction of the wind and sand prevention device, so that the wind and sand flows can be prevented from crossing the wind and sand prevention device, and the wind and sand flows are prevented from crossing the wind and sand prevention device.

Description

Wind and sand prevention device with inclined plane net prevention structure and roadbed wind and sand protection system

Technical Field

The invention relates to the technical field of wind and sand prevention and control, in particular to a wind and sand prevention device with an inclined plane net prevention structure and a roadbed wind and sand protection system.

Background

In order to solve the wind and sand prevention problems, the most common wind and sand prevention and control engineering is a wind and sand prevention and control device, such as a wind retaining wall, a sand retaining fence and the like on the roadbed side.

The roadbed wind-proof sand-resistant technology in the prior art at least has the following problems:

1) in reality, wind conditions are complex, a flow field of wind sand flow can generate turbulence when the wind sand flow meets the vertical wind and sand prevention device, the wind sand flow is similar to an obstacle when the wind sand flow meets the vertical wind and sand prevention device, and the airflow on the windward side of the wind and sand prevention device can be lifted, so that a part of the wind sand flow crosses the wind and sand prevention device, and the wind and sand prevention device can not effectively prevent wind and sand.

2) The ground surface of the gobi strong wind area is subjected to gravel substances and a large amount of dust substances with small particle sizes, and the substances mainly take a suspension state under the action of strong wind, are easily influenced by an upper wind speed increasing area of the wind-blocking wall to climb over the wind-blocking wall, and settle towards a wind shadow area under the wind-blocking wall, so that the damage to a roadbed and a track of the roadbed is caused.

3) In a sand storm area, wind seasons are mainly concentrated and distributed in winter and spring, and when plants wither in the period, a large number of withered hay branches and the like exist in the sand storm area, the withered hay branches are easy to fly with wind under the action of strong wind, and the withered hay branches are easy to climb over a wind-break wall due to loose forms and small mass and enter the inner side of the wind-break wall, so that railway electric wires and bow nets are damaged.

4) The existing wind-break wall adopts a single non-ventilation structure, the wind-break wall has large disturbance to regional air flow, particularly the inner side of the wind-break wall, namely the position of a roadbed track, forms a large eddy region, namely a wind shadow region, the wind speed and the wind direction of the region are complex, the influence on the safe running of a train causes potential harm, particularly a high-speed train, the wind speed and the wind direction are very important to the safe running of the train, meanwhile, a part of gravel substances can be carried with sand air flow to cross the wind-break wall and enter the downwind direction of the wind-break wall, namely the position of a roadbed and the track of the roadbed, and a large amount of sand accumulation is caused.

The present invention has been made in view of the above.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a wind-proof and sand-blocking device with an inclined plane net blocking structure, which is used for solving the problems that in the prior art, a flow field can generate turbulent flow when a wind sand flow meets a vertical wind-proof and sand-blocking device, and the airflow of the wind sand flow on the windward side of the wind-proof and sand-blocking device can be lifted, so that a part of the wind sand flow crosses the wind-proof and sand-blocking device, and the wind sand flow cannot be efficiently prevented from wind and sand; furthermore, through the arrangement of the inclined blocking net and the blocking part, the wind-proof sand-blocking device with different structures and functions at the upper part and the lower part is formed, so that the wind-proof effect is effectively achieved, and the high-efficiency sand-blocking effect can be met.

The invention further provides a wind and sand protection system for the roadbed in the wind and sand area, which is used for solving the defect that the roadbed and the train are protected from being damaged by wind and sand as wind and sand flow passes over the wind and sand prevention device in the prior art, optimizing the performance of the wind and sand prevention device for the roadbed and protecting the operation safety of the roadbed and the train.

According to a first aspect of the present invention, a wind and sand preventing apparatus having an inclined plane net structure, a windward side being a side facing a main wind direction, and a leeward side being a side facing away from the main wind direction, includes: the wind-proof sand-blocking device comprises: the blocking part and the net blocking part are arranged above the blocking part; the blocking part comprises a plurality of fixed stand columns arranged at intervals and a blocking body arranged between two adjacent fixed stand columns; the net blocking part comprises a net blocking part and a bracket component arranged corresponding to the fixed upright post; the bracket component is including being windward side support and the leeward side support that the contained angle set up each other, hinder the net and set up in two adjacent windward side support and two adjacent the surface of leeward side support to form inclined plane and hinder the net structure.

According to an embodiment of the invention, the screen portion further comprises: a plurality of horizontal brackets which are arranged at intervals and connected with two adjacent bracket assemblies; the blocking net is arranged on the surface formed by the two adjacent windward side brackets and the plurality of horizontal brackets and the surface formed by the two adjacent leeward side brackets and the plurality of horizontal brackets.

Particularly, through setting up at two adjacent windward side supports to and set up a plurality of horizontal stand between two adjacent leeward side supports, realize hindering the stronger supporting role of net, avoid being strikeed by the stream of sand wind and lead to hindering the cracked problem of net, strengthened the intensity of hindering the net.

According to one embodiment of the invention, a sand leakage area is arranged between at least two horizontal brackets close to the bottom side of the windward side bracket and between at least two horizontal brackets close to the bottom side of the leeward side bracket.

Particularly, as a large amount of sand and dust are carried in the sand flow, the flow direction of the sand flow is changed under the action of the inclined net blocking portion, and the sand and dust carried in the sand flow also flows along with the direction guided by the inclined net blocking portion, and finally is guided to the windward side or the leeward side of the blocking portion from the sand leakage area, so that the sand and dust in the sand flow are prevented from being accumulated at the matching position of the net blocking portion or the net blocking portion and the fixed upright post.

Furthermore, the sand leakage area can also play a role in guiding the sand wind flow, and after the sand wind flow generates vortex on the surface of the net blocking part, a part of air flow can flow away from the sand leakage area.

According to one embodiment of the invention, the bottom of the windward side support and the leeward side support are connected with the top of the fixed strut; the sand dust on the blocking net is discharged to the windward side of the fixed support from a sand leakage area on one side of the windward side support; and the sand and dust on the blocking net is discharged to the leeward side of the fixed support from the sand leaking area on one side of the leeward side support.

Particularly, the fixed stand column is arranged between the windward side support and the leeward side support, so that the dust between the windward side blocking net and the leeward side blocking net can be guided from the fixed stand column and the windward side and the leeward side of the blocking body.

According to one embodiment of the invention, the bottom of the windward side bracket is connected with the windward side of the fixed support, and the sand dust on the blocking net is discharged from a sand leakage area on the windward side bracket side to the windward side of the fixed support; the bottom of the leeward side support is connected with the leeward side of the fixed support, and the sand dust on the blocking net is discharged to the leeward side of the fixed support from the sand leakage area on one side of the leeward side support.

Particularly, all realize being connected windward side support and leeward side support with fixed stand, strengthened the intensity of hindering the net portion, also make simultaneously that the sand and dust between windward side hinders net and the leeward side hinders the net can obtain the drainage from fixed stand and windward side and two directions of leeward side that block the body.

According to one embodiment of the invention, the bracket assembly further comprises: the windward side support and the leeward side support are respectively arranged at two ends of the fixed support, and the fixed support is arranged between the windward side support and the leeward side support; and two groups of adjacent windward side brackets, leeward side brackets and fixed brackets surround to form a sand leaking area.

Particularly, the wind-proof areas of the windward side support and the leeward side support are increased by arranging the fixing supports, so that airflow flowing upwards along the blocking part, withered branches flying with wind, plastic bags and the like are intercepted.

According to one embodiment of the invention, the bracket assembly further comprises: the fixed support is respectively connected with the windward side support and the leeward side support; the fixed support is arranged between the windward side support and the leeward side support and is intersected with the fixed support; and two groups of adjacent windward side brackets, leeward side brackets and fixed brackets surround to form a sand leaking area.

Particularly, the windward side support and the leeward side support are connected with the fixed stand column, so that the strength of the net blocking part is enhanced, meanwhile, sand and dust between the windward side net blocking part and the leeward side net blocking part can be drained from the fixed stand column and the windward side and leeward side of the blocking body, and airflow flowing upwards along the blocking part and withered branches flying with wind, plastic bags and the like are intercepted.

According to one embodiment of the invention, the bracket assembly further comprises: the windward side support and the leeward side support are respectively arranged at two ends of the fixed support, wherein the bottom of the leeward side support is connected with the top of the fixed support; and two groups of adjacent windward side brackets, leeward side brackets and fixed brackets surround to form a sand leaking area.

Particularly, the bottom of the bracket on the leeward side is connected with the top of the fixed support, so that the sand and dust are guided to the windward side of the blocking part. According to topography or actual conditions, through with sand and dust drainage to certain one side of blocking part, be convenient for through the long-pending husky of periodic cleaning, also can realize the rational utilization to the resource, promoted the work efficiency of clearance long-pending husky.

According to one embodiment of the invention, the bracket assembly further comprises: the fixed support is respectively connected with the windward side support and the leeward side support; the leeward side of the fixed strut is connected with the leeward side bracket and is intersected with the fixed bracket; and two groups of adjacent windward side brackets, leeward side brackets and fixed brackets surround to form a sand leaking area.

Particularly, the fixing support is connected with the fixing support, so that the windward side support and the leeward side support are arranged in a split mode, the safety of the device is improved, and the problem that the leeward side support cannot be used due to the fact that the windward side support cannot normally work is solved.

According to one embodiment of the invention, the bracket assembly further comprises: the windward side support and the leeward side support are respectively arranged at two ends of the fixed support, wherein the bottom of the windward side support is connected with the top of the fixed support; and two groups of adjacent windward side brackets, leeward side brackets and fixed brackets surround to form a sand leaking area.

Particularly, the bottom of the windward side bracket is connected with the top of the fixed support, so that the sand and dust are guided to the leeward side of the blocking part. According to topography or actual conditions, through with sand and dust drainage to certain one side of blocking part, be convenient for through the long-pending husky of periodic cleaning, also can realize the rational utilization to the resource, promoted the work efficiency of clearance long-pending husky.

According to one embodiment of the invention, the connecting part of the bottom of the windward side support and the horizontal support and the connecting part of the bottom of the leeward side support and the horizontal support are respectively provided with a rotating mechanism capable of adjusting the inclination angles of the windward side support and the leeward side support.

Particularly, the inclination angles of the windward side support and the leeward side support can be adjusted by arranging the rotating mechanism, and corresponding adjustment can be performed according to different wind speeds.

According to one embodiment of the invention, the windward side bracket forms an angle of between 100 ° and 170 ° with the windward side of the blocking body; the leeward side bracket and the leeward side of the blocking body form an included angle between 100 degrees and 170 degrees.

According to one embodiment of the invention, the bottom of the windward side support and the horizontal support are hollow structures, and a telescopic sliding support is arranged in each hollow structure; a plurality of horizontal brackets are arranged between two adjacent sliding brackets on the windward side at intervals, and the blocking net is arranged on a supporting plane formed by the sliding brackets and the horizontal brackets; a plurality of horizontal supports are arranged between two adjacent sliding supports on one side of the leeward side at intervals, and the blocking net is arranged on a supporting plane formed by the sliding supports and the horizontal supports.

Particularly, through the arrangement of the sliding support, the area of the inclined plane net blocking part is adjusted, and the net blocking parts with different blocking areas can be adjusted according to different seasons, different wind power and different wind speeds.

According to one embodiment of the invention, a support bracket for supporting the fixing bracket is or is not arranged below the fixing bracket, one end of the support bracket is connected with the fixing pillar or the roadbed surface, and the other end of the support bracket is connected with the fixing bracket.

Particularly, the supporting bracket is arranged, so that the fixed upright post, the supporting bracket and the fixed bracket form a stable triangular structure, and the overall stability is improved.

According to one embodiment of the invention, the barrier body is a non-permeable wall or a semi-permeable wall; holes are distributed on the surface of the semi-ventilation wall body, and ventilation sand-blocking nets or wind-proof dust suppression punching plates matched with the holes in shape are arranged at openings at two ends of each hole.

Particularly, according to the difference of different areas wind-force, can block the concrete structure of body through the adjustment, realize with the cooperation that hinders the net portion, the reinforcing is prevent wind and is hindered sand effect.

According to an embodiment of the invention, the length and/or height of the windward side support is greater than the length and/or height of the corresponding leeward side support.

According to a second aspect of the invention, the wind and sand prevention system for the subgrade in the wind and sand area comprises the wind and sand prevention device with the inclined plane net prevention structure, which is arranged at least on the windward side of the subgrade in the wind and sand area.

According to one embodiment of the invention, the bottom of the fixed upright post is fixedly connected with a fixed foundation, the bottom of the fixed upright post is fixed below the roadbed surface of the roadbed in the wind and sand area, and the wind and sand prevention device for the wind and sand prevention area is fixed at the position of the road shoulder of the roadbed in the wind and sand area through the fixed upright post.

Particularly, the bottom end of the fixed upright post is positioned below the roadbed plane, and the bottom of the fixed upright post is fixedly connected with a fixed foundation. The bottom of the fixed stand column is fixed under the ground of the protection area through the fixed foundation, so that the fixed stand column can be quickly and stably installed.

According to an embodiment of the present invention, the wind and sand prevention devices for the wind and sand areas are respectively disposed on two opposite sides of the roadbed in the wind and sand area, the wind and sand prevention device for the wind and sand area located on the windward side of the roadbed in the wind and sand area is a first wind and sand prevention device, the wind and sand prevention device for the wind and sand area located on the leeward side of the roadbed in the wind and sand area is a second wind and sand prevention device, and the windward sides of the first wind and sand prevention device and the second wind and sand prevention device are both located on the outer side of the roadbed in the wind and sand area.

Specifically, the first wind prevention and sand prevention device can be used for preventing the wind and sand flow from the main wind direction, and the second wind prevention and sand prevention device is used for avoiding the problem that the wind and sand flow generates backflow after passing over the first wind prevention and sand prevention device, so that the accumulated sand on the lee side of the first wind prevention and sand prevention device is blown up.

According to one embodiment of the present invention, the first wind and sand prevention device has a height higher than that of the second wind and sand prevention device, and the total height of the second wind and sand prevention device is 0.35 to 0.7 times the total height of the first wind and sand prevention device.

Specifically, the first wind-proof and sand-blocking device is arranged to mainly solve wind sand flow in a main wind direction, when the wind sand flow crosses or penetrates the first wind-proof and sand-blocking device, airflow vortex is generated to blow up sand deposition on the lee side of the first wind-proof and sand-blocking device, airflow reverse to the main wind direction is formed by the airflow vortex, so that sand substances and dust such as sand and gravel in the downwind direction of the roadbed are brought to the roadbed by the vortex airflow to cause a large amount of sand deposition on the inner sides of a roadbed bed, a track and a wind-blocking wall of the roadbed, and direct influence is caused on safe running of a train.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: according to the wind and sand prevention device with the inclined plane net blocking structure and the roadbed wind and sand protection system, the wind and sand flows are guided to change the flow direction of the wind and sand prevention device, so that the wind and sand flows can be prevented from crossing the wind and sand prevention device, and the wind and sand flows are prevented from crossing the wind and sand prevention device; furthermore, through the arrangement of the inclined blocking net and the blocking part, the wind-proof sand-blocking device with different structures and functions at the upper part and the lower part is formed, so that the wind-proof effect is effectively achieved, and the high-efficiency sand-blocking effect can be met.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic side view of a wind and sand prevention device with an inclined plane net blocking structure provided by an embodiment of the present invention, which is arranged on both sides of a roadbed;

FIG. 2 is a schematic top view of FIG. 1 in accordance with an embodiment of the present invention;

fig. 3 is a first schematic view of an assembly relationship of a fixed upright, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the invention;

FIG. 4 is a schematic top view of FIG. 3 in accordance with an embodiment of the present invention;

FIG. 5 is a schematic side view of FIG. 3 according to an embodiment of the present invention;

fig. 6 is a second schematic view of an assembly relationship of a fixed upright, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the invention;

FIG. 7 is a schematic top view of FIG. 6 in accordance with an embodiment of the present invention;

FIG. 8 is a schematic side view of FIG. 6 according to an embodiment of the present invention;

fig. 9 is a third schematic view of an assembly relationship of a fixed upright, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the invention;

FIG. 10 is a schematic top view of FIG. 9 provided in accordance with an embodiment of the present invention;

fig. 11 is a fourth schematic view of an assembly relationship of a fixed upright, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the invention;

fig. 12 is a fifth schematic view illustrating an assembly relationship of a fixed column, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net structure according to the embodiment of the present invention;

fig. 13 is a sixth schematic view showing an assembly relationship of the fixed column, the windward side bracket, the leeward side bracket and the horizontal bracket in the wind and sand prevention device with the inclined plane net blocking structure according to the embodiment of the present invention;

fig. 14 is a seventh schematic view illustrating an assembly relationship of a fixed column, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the present invention;

fig. 15 is an eighth schematic view of an assembly relationship between a fixed upright post, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the invention;

fig. 16 is a ninth schematic view illustrating an assembly relationship of a fixed column, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the present invention;

fig. 17 is a tenth schematic view illustrating an assembly relationship of a fixed column, a windward side bracket, a leeward side bracket and a horizontal bracket in the wind and sand prevention device with an inclined plane net blocking structure according to the embodiment of the present invention.

Reference numerals:

100. a first wind and sand prevention device; 1. fixing the upright post; 2. a blocking portion; 3. a net blocking part; 4. an intercepting net; 5. a roadbed; 6. a track; 7. a train; 8. fixing a foundation; 9. a roadbed surface; 10. a barrier body; 11: a windward side bracket; 12: a leeward side bracket; 13: blocking a net; 14: a horizontal support; 15: a sand leakage area; 16: fixing a bracket; 17: a sliding support; 18: a support bracket; 200. and the second wind and sand prevention device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

On the first hand, the wind and sand prevention device with the inclined plane net blocking structure provided by the embodiment of the invention is mainly used for wind and sand prevention and control engineering of a roadbed 5 and the like, is suitable for the roadbed 5 in a wind and sand area, such as a ballast track roadbed 5, a ballastless track roadbed 5, a highway roadbed 5 and the like, is used for protecting the roadbed 5 and a train 7 from wind and sand damage, is used for optimizing the performance of the wind and sand prevention device of the roadbed 5 and protecting the operation safety of the roadbed 5 and the train 7, and is particularly suitable for the wind and sand prevention of the ballastless track roadbed 5 in a gobi large wind area.

In a second aspect, the wind and sand protection system for a subgrade in a wind and sand area provided in an embodiment of the present invention includes a wind and sand prevention device with an inclined plane net prevention structure at least arranged on the windward side of the subgrade 5 in the wind and sand area.

Note that, in the present invention, the upwind side, the windward side, and the upwind direction are the side through which the main wind passes first. As shown by the arrows in fig. 1 to 17, the direction indicated by the arrows is the direction of the main wind flow, i.e., M direction. The leeward side, the downwind direction, i.e. the side through which the main wind passes, i.e. the N direction. The inner side and the outer side are relative to the center of the roadbed 5, the inner side is close to the center of the roadbed 5, and the outer side is far away from the center of the roadbed 5, such as: the inner side of the roadbed 5 of the first wind and sand prevention device 100 refers to the downwind side, namely the N side, of the first wind and sand prevention device 100; the outer side of the roadbed 5 of the first wind and sand prevention device 100 refers to the windward side, namely the M side, of the first wind and sand prevention device 100; the outer side of the roadbed 5 of the second wind and sand prevention device 200 refers to the windward side, namely the M side, of the second wind and sand prevention device 200; the inner side of the roadbed 5 of the second wind and sand prevention device 200 is the downwind side, namely the N side, of the wind and sand prevention device.

As shown in fig. 1 to 2, wind and sand prevention devices for wind and sand areas are respectively provided on opposite sides of the roadbed 5 in the wind and sand area, and the height of the wind and sand prevention device for wind and sand area on the windward side is higher than that of the wind and sand prevention device for wind and sand area on the leeward side. For convenience of description, the wind and sand prevention apparatus for windy side wind and sand area is referred to as a first wind and sand prevention apparatus 100, and the wind and sand prevention apparatus for leeward side wind and sand area is referred to as a second wind and sand prevention apparatus 200.

The windward sides of the first and second wind and

sand prevention devices

100 and 200 are located outside the roadbed 5 in the wind and sand area, and as can be seen from fig. 1, regardless of the difference in height between the first and second wind and

sand prevention devices

100 and 200, the main structures of the first and second wind and

sand prevention devices

100 and 200 are symmetrically arranged with respect to the axis of the roadbed 5.

The first wind-proof and sand-blocking device 100 is located at the windward side shoulder position of the roadbed 5, the second wind-proof and sand-blocking device 200 is located at the leeward side shoulder position of the roadbed 5, and the second wind-proof and sand-blocking device 200 is different from the first wind-proof and sand-blocking device 100 in that the height of the blocking part 2 of the second wind-proof and sand-blocking device 200 is between 1.5 and 3m, and the height of the net blocking part 3 is between 0.45 and 2.4 m.

In some embodiments, the second wind and sand prevention device 200 has an overall height that is 0.35 to 0.7 times an overall height of the first wind and sand prevention device 100.

In some embodiments, the first wind prevention and sand control device 100 or the second wind prevention and sand control device 200 is disposed at a distance of 50cm to 2m from the position of the shoulder inside the roadbed 5.

It should be noted that, the first wind-proof and sand-blocking device 100 and the second wind-proof and sand-blocking device 200 are provided for the region with strong wind-sand activity such as the gobi wind-sand area, and because the wind-proof and sand-blocking device can form a relatively obvious vortex in the downwind direction to form an opposite direction airflow, and the sand in the downwind direction of the roadbed 5 is brought to the roadbed 5 by the vortex airflow to cause a great amount of sand accumulation on the roadbed 5 and the track 6, the wind-proof and sand-blocking device is also provided at the downwind road shoulder position of the roadbed 5, so that the harm of the opposite direction airflow is effectively prevented.

It should be further noted that the blocking net 13 is a sand-proof net with a planar net structure, and may be made of new chemical materials, metal materials or plant fiber materials, specifically, High Density Polyethylene (HDPE), Polyethylene (PE), Nylon (Nylon), metal nets or plant fiber sand-proof nets, and the porosity is 40 to 70%. The plane net structure is made by a flat weaving or warp knitting forming process.

As shown in fig. 3 to 10, the net blocking portion 3 is disposed above the blocking portion 2, the blocking portion 2 includes a fixed upright 1 and a blocking body 10, and the net blocking portion 3 includes a windward side bracket 11, a leeward side bracket 12 and a net blocking 13.

Further, the bottom of the fixed upright post 1 is positioned below the roadbed surface 9, the bottom of the fixed upright post 1 is fixedly connected with a fixed foundation 8, and the bottom of the fixed upright post 1 is fixed below the roadbed surface 9 of the protection area through the fixed foundation 8, so that the fixed upright post 1 can be quickly and stably installed.

Furthermore, the fixing supports 16 partially extend from the windward side to the leeward side to form an arc-shaped fixing structure, and the blocking nets 13 are arranged on the surfaces of two adjacent fixing supports 16 and form a curved blocking net structure.

Further, the blocking body 10 is a non-permeable wall or a semi-permeable wall; holes are distributed on the surface of the semi-ventilation wall body, and the openings at the two ends of the holes are provided with ventilation sand-blocking nets or wind-proof dust-suppression punching plates matched with the holes in shape.

Specifically, according to the difference of different areas wind power, can block the concrete structure of body 10 through the adjustment, realize with blocking the cooperation of net portion 3, strengthen preventing wind and blocking the sand effect.

It should be noted that the blocking body 10 may also be formed by combining standard modules formed by pouring concrete, or may be a monolithic structure and flexibly adjusted according to actual needs.

The height of the blocking part 2 is H1, the blocking part is made according to the strength of the wind sand in the wind sand area, the blocking part has difference and pertinence, the sand control specificity is met, and the purposes of defense setting due to harm and local condition adjustment are achieved. Further, the height H1, H1 and 4.5m of the barrier part 2 are more than or equal to 3.7m and less than or equal to 4.5 m. The height of the net blocking part 3 is H2, and H2 is more than or equal to 1.11m and less than or equal to 3.6 m.

In some embodiments, barrier 2 has a height H1, 0.8m ≦ H1 < 3.7 m. The height of the net blocking part 3 is H2, and H2 is more than or equal to 0.5m and less than 1.11 m; the thickness of the barrier 2 is 5 to 20 cm. The length is the distance between the two fixed upright posts 1 and is 2.5m to 7 m.

In the case of concrete cast standard modules, the standard modules may have a width of 40cm to 80cm in some embodiments. The length of the standard module is 3m to 7 m. The thickness of the standard module is 10cm to 25 cm. The blocking part 2 may be assembled from a plurality of standard modules.

The bottom of the barrier 2 is closely adjacent to the roadbed surface 9 without any gap. In some embodiments, the bottom of barrier 2 is bonded to the subgrade surface 9 at the joint by concrete or sealant.

As shown in fig. 11 to 17, some embodiments of the barrier net sections 3 and barrier sections 2 are provided for the present invention. Different implementation schemes can be selected according to the wind and sand strength, the terrain, the landform and the characteristics of wind and sand flow of the wind and sand area, and then efficient wind and sand prevention is achieved.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In some embodiments of the present invention, as shown in fig. 3 to 17, the present embodiment provides a wind and sand prevention device having a slope screen structure, a side facing a main wind direction being a windward side, a side facing away from the main wind direction being a leeward side, comprising: the wind-proof sand-blocking device comprises: the barrier part 2 and the net blocking part 3 arranged above the barrier part 2; the blocking part 2 comprises a plurality of fixed upright posts 1 arranged at intervals and a blocking body 10 arranged between two adjacent fixed upright posts 1; the net blocking part 3 comprises a net blocking 13 and a bracket component arranged corresponding to the fixed upright post 1; the bracket component comprises a windward side bracket 11 and a leeward side bracket 12 which are arranged at an included angle, and the blocking net 13 is arranged on the surfaces of two adjacent windward side brackets 11 and two adjacent leeward side brackets 12 and forms an inclined plane blocking net 13 structure.

Specifically, the embodiment of the invention guides the wind and sand flow to change the flow direction of the wind and sand prevention device, so that the wind and sand flow can be prevented from crossing the wind and sand prevention device, and the wind and sand flow is prevented from crossing the wind and sand prevention device.

In some embodiments, the present invention provides a support assembly comprising a windward support 11 and a leeward support 12 arranged at an angle to each other, wherein the windward support 11 has a length and/or height greater than the length and/or height of the respective leeward support 12, and most preferably the leeward support 12 has a length and/or height 0.25 to 0.75 times the length and/or height of the respective windward support 11.

In some embodiments, the present invention provides a bracket assembly that includes only the windward bracket 11, without the leeward bracket 12.

It should be noted that the invention adopts a structure with a sparse upper part and a dense lower part, which accords with the wind-sand fluid mechanics law, the lower part is a blocking part 2 with small porosity and has the functions of blocking sand substances and consuming wind energy, and the upper part adopts a net blocking part 3 with a net structure with large porosity, so that the wind speed of a wind speed accelerating area formed above the blocking part 2 of the vertical structure originally can be effectively reduced, and the wind-sand flow is effectively prevented from crossing the blocking part 2. And the net blocking part 3 of the net structure adopted on the upper part is provided with the net blocking 13 on the windward side and the leeward side, so that a double-channel net structure is formed, and the sand blocking rate and the wind penetration rate can be greatly improved. The design is designed according to the movement rule of the wind sand flow on the windward side of the wind and sand prevention device, and the wind sand flow can generate a movement included angle turning upwards when meeting the blocking part 2.

In some embodiments, as shown in fig. 3 to 17, the wire blocking section 3 further comprises: a plurality of horizontal brackets 14 which are arranged at intervals and are connected with two adjacent bracket components; the blocking net 13 is arranged on the surface formed by two adjacent windward side brackets 11 and a plurality of horizontal brackets 14, and the surface formed by two adjacent leeward side brackets 12 and a plurality of horizontal brackets 14.

Specifically, by arranging the horizontal supports 14 between the two adjacent windward side supports 11 and the two adjacent leeward side supports 12, a stronger supporting effect on the blocking net 13 is realized, the problem that the blocking net 13 is broken due to impact of wind and sand flows is avoided, and the strength of the blocking net 13 is enhanced.

In some embodiments, as shown in fig. 3 to 8, a sand leakage area 15 is provided between at least two horizontal brackets 14 on the side close to the bottom of the windward side bracket 11 and between at least two horizontal brackets 14 on the side close to the bottom of the leeward side bracket 12.

Specifically, as a large amount of sand and dust are carried in the wind and sand flow, the flow direction of the wind and sand flow is changed under the action of the inclined net blocking part 3, and the sand and dust carried in the wind and sand flow also flows along with the direction guided by the inclined net blocking part 13, and finally is guided to the windward side or the leeward side of the blocking part 2 from the sand leakage area 15, so that the sand and dust in the wind and sand flow is prevented from being accumulated at the matching position of the net blocking part 13 or the net blocking part 13 and the fixed upright post 1.

Further, the sand leakage area 15 can also play a role in guiding the sand flow, and after the sand flow passes through the windward side blocking net 13, a part of the air flow and the sand dust flow away from the sand leakage area 15 under the guidance of the leeward side of the inclined windward side blocking net 13 and the windward side of the leeward side blocking net 13.

In some embodiments, as shown in fig. 3 to 5, the bottom of the windward side bracket 11 and the leeward side bracket 12 are connected with the top of the fixed post; the sand dust on the blocking net 13 is discharged from a sand leakage area 15 at one side of the windward side bracket 11 to the windward side of the fixed support; the dust on the screen 13 is discharged from the sand leaking area 15 on the lee side of the bracket 12 to the lee side of the fixed post.

Specifically, by arranging the fixed upright post 1 between the windward side bracket 11 and the leeward side bracket 12, the dust between the windward side blocking net 13 and the leeward side blocking net 13 can be guided from two directions of the windward side and the leeward side of the fixed upright post 1 and the blocking body 10.

In some embodiments, as shown in fig. 6 to 8, the bottom of the windward side bracket 11 is connected with the windward side of the fixed pillar, and the sand dust on the blocking net 13 is discharged from the sand leaking region 15 on the windward side bracket 11 side to the windward side of the fixed pillar; the bottom of the leeward side bracket 12 is connected with the leeward side of the fixed support column, and the dust on the blocking net 13 is discharged from the sand leakage area 15 on one side of the leeward side bracket 12 to the leeward side of the fixed support column.

Particularly, the windward side bracket 11 and the leeward side bracket 12 are connected with the fixed upright post 1, so that the strength of the net blocking part 3 is enhanced, and meanwhile, the dust between the windward side net blocking 13 and the leeward side net blocking 13 can be drained from the fixed upright post 1 and the windward side and leeward side directions of the blocking body 10.

In some embodiments, as shown in fig. 9-10, the bracket assembly further comprises: the fixed support 16 is connected with the top of the fixed support, the windward side support 11 and the leeward side support 12 are respectively arranged at two ends of the fixed support 16, and the fixed support is arranged between the windward side support 11 and the leeward side support 12; two groups of adjacent windward side brackets 11, leeward side brackets 12 and fixed brackets 16 surround to form a sand leakage area 15.

Specifically, by providing the fixing bracket 16, the wind-resistant areas of the windward side bracket 11 and the leeward side bracket 12 are increased, so that the airflow flowing upward along the blocking portion 2 and withered branches and plastic bags flying with the wind are intercepted more effectively.

In some embodiments, as shown in fig. 11, the bracket assembly further comprises: a fixed bracket 16 connected with the windward side bracket 11 and the leeward side bracket 12 respectively; the fixed strut is arranged between the windward side bracket 11 and the leeward side bracket 12 and is intersected with the fixed bracket 16; two groups of adjacent windward side brackets 11, leeward side brackets 12 and fixed brackets 16 surround to form a sand leakage area 15.

Specifically, the windward side bracket 11 and the leeward side bracket 12 are connected with the fixed upright post 1, so that the strength of the net blocking part 3 is enhanced, meanwhile, the sand and dust between the windward side net blocking 13 and the leeward side net blocking 13 can be drained from the fixed upright post 1 and the windward side and leeward side of the blocking body 10, and the air flow flowing upwards along the blocking part 2 and withered branches flying with the wind, plastic bags and the like are intercepted.

In some embodiments, as shown in fig. 12, the bracket assembly further comprises: the fixed support 16 is connected with the top of the fixed support, the windward side support 11 and the leeward side support 12 are respectively arranged at two ends of the fixed support 16, wherein the bottom of the leeward side support 12 is connected with the top of the fixed support; two groups of adjacent windward side brackets 11, leeward side brackets 12 and fixed brackets 16 surround to form a sand leakage area 15.

Specifically, the bottom of the leeward side bracket 12 is connected to the top of the fixed support, so that the dust is guided to the windward side of the blocking part 2. According to topography or actual conditions, through with sand and dust drainage to certain one side of blocking part 2, be convenient for through the long-pending husky of periodic cleaning, also can realize the rational utilization to the resource, promoted the work efficiency of clearance long-pending husky.

In some embodiments, as shown in fig. 13, the bracket assembly further comprises: a fixed bracket 16 connected with the windward side bracket 11 and the leeward side bracket 12 respectively; the leeward side of the fixed strut is connected with the leeward side bracket 12 and is intersected with the fixed bracket 16; two groups of adjacent windward side brackets 11, leeward side brackets 12 and fixed brackets 16 surround to form a sand leakage area 15.

Particularly, the fixed support 16 is connected with the fixed support, so that the windward side support 11 and the leeward side support 12 are arranged in a split mode, the safety of the device is improved, and the problem that the leeward side support 12 cannot be used due to the fact that the windward side support 11 cannot work normally is solved.

In some embodiments, as shown in fig. 14, the bracket assembly further comprises: the fixed support 16 is connected with the top of the fixed support, the windward side support 11 and the leeward side support 12 are respectively arranged at two ends of the fixed support 16, wherein the bottom of the windward side support 11 is connected with the top of the fixed support; two groups of adjacent windward side brackets 11, leeward side brackets 12 and fixed brackets 16 surround to form a sand leakage area 15.

Specifically, the bottom of the windward side bracket 11 is connected with the top of the fixed support, so that the sand and dust are guided to the leeward side of the blocking part 2. According to topography or actual conditions, through with sand and dust drainage to certain one side of blocking part 2, be convenient for through the long-pending husky of periodic cleaning, also can realize the rational utilization to the resource, promoted the work efficiency of clearance long-pending husky.

In some embodiments, as shown in fig. 15, the bracket assembly further comprises: and the fixed bracket 16 is respectively connected with the windward side bracket 11 and the leeward side bracket 12. The leeward side of the fixed post is connected to the leeward side bracket 12 and is disposed across the fixed bracket 16. Two groups of adjacent windward side brackets 11, leeward side brackets 12 and fixed brackets 16 surround to form a sand leakage area 15.

In some embodiments, as shown in fig. 10, the intercepting screen 4 is disposed in the sand leakage area 15, and the intercepting screen 4 includes a plurality of barbed wires disposed at intervals, a plurality of barbed wires are disposed side by side, or at least one barbed wire is disposed in a staggered manner.

Specifically, the intercepting net 4 can effectively intercept dead branches of hay, plastic bags and the like flying with wind. The withered branches of the hay and the plastic bags are prevented from turning over the wind-break wall and entering the inner side of the wind-break wall, and damage to railway wires and bow nets is avoided. The adopted intercepting net 4 can intercept the articles in a targeted manner, so that the articles are effectively prevented from entering the inner side of the railway roadbed 5, and the safety of the electrified operation of the railway is protected.

It should be noted that, the interception net 4 can effectively intercept withered branches and plastic bags flying with wind. In a sand storm area, wind seasons are mainly concentrated and distributed in winter and spring, and when plants wither in the period, a large number of withered hay branches and the like exist in the sand storm area, the withered hay branches are easy to fly with wind under the action of strong wind, and the withered hay branches are easy to climb over a wind-break wall due to loose forms and small mass and enter the inner side of the wind-break wall, so that railway electric wires and bow nets are damaged. On the other hand, in windy seasons, when everything in the northwest wind sand area is exhausted, a large amount of construction waste (such as sunshade nets, geotextiles and the like) flies everywhere along with strong wind, and some passengers throw away waste (plastic bags, foam boxes and the like) along the railway also exist, the waste can fly easily along with wind, and easily climb over a wind-blocking wall (a wind-proof sand-blocking device) to enter the inner side of the roadbed 5, so that the railway electric wires and bow nets are particularly damaged, and short circuit and fire are easily caused. The intercepting net 4 adopted by the embodiment can intercept the articles in a targeted manner, so that the articles are effectively prevented from entering the inner side of the roadbed 5, and the safety of the electrified operation of the railway is protected.

In some embodiments, the connection between the bottom of the windward side bracket 11 and the horizontal bracket 14 and the connection between the bottom of the leeward side bracket 12 and the horizontal bracket 14 are provided with a rotating mechanism capable of adjusting the inclination angles of the windward side bracket 11 and the leeward side bracket 12.

Specifically, the inclination angles of the windward side bracket 11 and the leeward side bracket 12 can be adjusted by arranging the rotating mechanism, and the corresponding adjustment can be realized according to different wind speeds.

It should be noted that the rotating mechanism provided herein may be a hinge or similar hinge structure provided at the connection between the bottom of the windward side bracket 11 and the horizontal bracket 14, and the connection between the bottom of the leeward side bracket 12 and the horizontal bracket 14, and may have a self-positioning function, that is, it may rotate to a certain angle to achieve self-locking, or it may achieve electric control and electric locking through a motor and a pivot. In practical application, a monitoring module for sensing wind speed can be further arranged, and the control of the rotating mechanism is realized through the feedback of the monitoring module. For the sake of economy, the rotating mechanism is not described herein too much, and reference may be made in application to the rotating structure that is conventional in the art.

In some embodiments, the windward bracket 11 forms an angle of between 100 ° and 170 ° with the windward side of the blocking body 10; the leeward side bracket 12 forms an angle of between 100 ° and 170 ° with the leeward side of the barrier body 10.

In some embodiments, as shown in fig. 17, the bottom of the windward side bracket 11 and the horizontal bracket 14 are hollow structures, and a telescopic sliding bracket 17 is arranged in the hollow structures. A plurality of horizontal brackets 14 are arranged between two adjacent sliding brackets 17 on the windward side at intervals, and the blocking net 13 is arranged on a supporting plane formed by the sliding brackets 17 and the horizontal brackets 14; a plurality of horizontal brackets 14 are arranged between two adjacent sliding brackets 17 on the leeward side at intervals, and the blocking net 13 is arranged on a supporting plane formed by the sliding brackets 17 and the horizontal brackets 14.

Particularly, the area of the inclined plane net blocking part 3 is adjusted by arranging the sliding support 17, and the net blocking parts 3 with different blocking areas can be adjusted according to different seasons, different wind power and different wind speeds.

It should be noted that, the arrangement of the sliding support 17 in the hollow structure may be understood as that a sliding rail or a sliding way is arranged in the hollow structure, and correspondingly, a sliding way or a sliding rail is arranged on the sliding support 17, and can be extended in and out. Meanwhile, the action of the sliding support 17 can be controlled through the driving device, the monitoring device acquires the related parameters of the wind speed and the wind sand, and the driving device drives the sliding support 17 to act and extend out of or into the hollow structure when the condition that the action condition of the sliding support 17 is met is identified. The driving device can be driven by a belt and a belt wheel or a gear rack. For the sake of brevity, the detailed description of the configuration herein is not repeated, and the detailed structure may refer to related designs in the art.

In some embodiments, as shown in fig. 11 to 16, a support bracket 18 for supporting the fixing bracket 16 is or is not provided below the fixing bracket 16, and one end of the support bracket 18 is connected to the fixing post or the roadbed surface 9 and the other end is connected to the fixing bracket 16.

Particularly, the support bracket 18 is arranged, so that the fixed upright post 1, the support bracket 18 and the fixed bracket 16 form a stable triangular structure, and the overall stability is improved.

When the support frame 18 is connected to the roadbed 9, it may be a fixing rope for fixing the net blocking portion 3.

In some embodiments, as shown in fig. 5 and 8, the barrier body 10 is a non-permeable wall or a semi-permeable wall; holes are distributed on the surface of the semi-ventilation wall body, and the openings at the two ends of the holes are provided with ventilation sand-blocking nets or wind-proof dust-suppression punching plates matched with the holes in shape.

In some embodiments of the present invention, as shown in fig. 1 and 2, the present embodiment provides a wind and sand protection system for a subgrade in a wind and sand area, comprising at least one wind and sand prevention device with an inclined plane net-blocking structure, which is arranged on the windward side of the subgrade 5 in the wind and sand area.

In some embodiments, the bottom of the fixed upright post 1 is fixedly connected with a fixed foundation 8, the bottom of the fixed upright post 1 is fixed below the roadbed surface 9 of the roadbed 5 in the wind and sand area through the fixed foundation 8, and the wind and sand prevention device for the wind and sand area is fixed at the position of the road shoulder of the roadbed 5 in the wind and sand area through the fixed upright post 1.

Specifically, the bottom end of the fixed upright post 1 is positioned below the level of the roadbed 5, and the bottom of the fixed upright post 1 is fixedly connected with a fixed foundation 8. The bottom of the fixed upright post 1 is fixed under the ground of the protection area through the fixed foundation 8, so that the fixed upright post 1 can be quickly and stably installed.

In some embodiments, the opposite sides of the wind and sand area subgrade 5 are respectively provided with a wind and sand prevention device for the wind and sand area, the wind and sand prevention device for the wind and sand area positioned on the windward side of the wind and sand area subgrade 5 is a first wind and sand prevention device 100, the wind and sand prevention device for the wind and sand area positioned on the leeward side of the wind and sand area subgrade 5 is a second wind and sand prevention device 200, and the windward sides of the first wind and sand prevention device 100 and the second wind and sand prevention device 200 are both positioned outside the wind and sand area subgrade 5.

Specifically, the first wind and sand prevention device 100 blocks the wind and sand flow from the main wind direction, and the second wind and sand prevention device 200 avoids the problem that the wind and sand flow flows back after passing over the first wind and sand prevention device 100, so that the sand accumulated on the lee side of the first wind and sand prevention device 100 is blown up.

In some embodiments, the height of the first sand prevention and wind resistant device 100 is greater than the height of the second sand prevention and wind resistant device 200, and the total height of the second sand prevention and wind resistant device 200 is 0.35 to 0.7 times the total height of the first sand prevention and wind resistant device 100.

Specifically, the first wind-proof and sand-blocking device 100 is arranged to mainly solve the wind sand flow in the main wind direction, when the wind sand flow crosses or passes through the first wind-proof and sand-blocking device 100, an airflow vortex is generated to blow up the sand deposit on the leeward side of the first wind-proof and sand-blocking device 100, the airflow vortex can form an airflow in the direction opposite to the main wind direction, so that sand substances and dust such as sand and gravel in the downwind direction of the roadbed 5 are brought onto the roadbed 5 by the vortex airflow to cause a large amount of sand deposit on the inner sides of the track bed, the track 6 and the wind-blocking wall of the roadbed 5, and the safe running of the train 7 is directly influenced, the problem can be solved by arranging the second wind-proof and sand-blocking device 200, and simultaneously, the whirling vortex wind speed and the wind force are small, so that the wind-proof and sand-blocking can be realized by keeping the first wind-proof and sand.

In some embodiments, especially when applied to highway foundations 5, only the first wind and sand prevention device 100 may be provided in the wind direction on the foundations 5, depending on the intensity of the wind and sand activity.

In some embodiments, the first wind and sand prevention device 100 and the second wind and sand prevention device 200 provided by the present invention are not limited to the roadbed 5 wind and sand control project, and can be applied to other wind and sand control projects, such as: in the wind sand control engineering of sand dunes, gobi, desert engineering areas and other areas, in particular to the outer edge sand-blocking zone of a large wind sand control engineering system, the front edge sand-blocking zone of a large-area desert control engineering, the high-rise sand hill lockstitching engineering of a desert oasis and the like.

The sand prevention and

wind prevention devices

100 and 200 of the present embodiment are different in the accumulated sand formation form according to the principle thereof, and specifically, the first sand prevention and wind prevention device 100 is formed at the windward side position, i.e., the M side, and the second sand prevention and wind prevention device 200 is formed at the leeward side position, i.e., the N side. And the sand accumulation of the first wind prevention and sand blocking device 100 is much larger than that of the second wind prevention and sand blocking device 200, so the first wind prevention and sand blocking device 100 is important for maintenance of the wind prevention and sand blocking device, and the first wind prevention and sand blocking device 100 needs to be cleaned periodically.

Finally, the above embodiments are only for illustrating the present invention, and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. The utility model provides a prevent wind and hinder husky device with inclined plane hinders net structure, is windward side towards one side of main wind direction, and one side of the main wind direction of dorsad is leeward side, its characterized in that includes: the wind-proof sand-blocking device comprises: the blocking part and the net blocking part are arranged above the blocking part;

the blocking part comprises a plurality of fixed stand columns arranged at intervals and a blocking body arranged between two adjacent fixed stand columns;

the net blocking part comprises a net blocking part and a bracket component arranged corresponding to the fixed upright post; the bracket component is including being windward side support and the leeward side support that the contained angle set up each other, hinder the net and set up in two adjacent windward side support and two adjacent the surface of leeward side support to form inclined plane and hinder the net structure.

2. The wind and sand prevention device with an inclined plane screen structure according to claim 1, wherein the screen section further comprises: a plurality of horizontal brackets which are arranged at intervals and connected with two adjacent bracket assemblies;

the blocking net is arranged on the surface formed by the two adjacent windward side brackets and the plurality of horizontal brackets and the surface formed by the two adjacent leeward side brackets and the plurality of horizontal brackets.

3. The wind and sand prevention device with the inclined plane net blocking structure according to claim 2, wherein a sand leakage area is provided between at least two of the horizontal supports on the side close to the bottom of the windward side support and between at least two of the horizontal supports on the side close to the bottom of the leeward side support.

4. The wind and sand preventing device with the inclined plane net blocking structure according to claim 3, wherein the bottom parts of the windward side support and the leeward side support are connected with the top part of the fixed support;

the sand dust on the blocking net is discharged to the windward side of the fixed support from a sand leakage area on one side of the windward side support;

and the sand and dust on the blocking net is discharged to the leeward side of the fixed support from the sand leaking area on one side of the leeward side support.

5. The wind and sand preventing device with an inclined plane net blocking structure according to claim 3, wherein the bottom of the windward side bracket is connected with the windward side of the fixed support, and the sand dust on the net is discharged from the sand leaking region at the windward side of the fixed support;

the bottom of the leeward side support is connected with the leeward side of the fixed support, and the sand dust on the blocking net is discharged to the leeward side of the fixed support from the sand leakage area on one side of the leeward side support.

6. The wind and sand prevention device with a sloping barrier net structure according to claim 2, wherein said bracket assembly further comprises: the windward side support and the leeward side support are respectively arranged at two ends of the fixed support, and the fixed support is arranged between the windward side support and the leeward side support;

and two groups of adjacent windward side brackets, leeward side brackets and fixed brackets surround to form a sand leaking area.

7. The wind and sand prevention device with a sloping barrier net structure according to claim 2, wherein said bracket assembly further comprises: the fixed support is respectively connected with the windward side support and the leeward side support;

the fixed support is arranged between the windward side support and the leeward side support and is intersected with the fixed support;

8. The wind and sand prevention device with a sloping barrier net structure according to claim 2, wherein said bracket assembly further comprises: the windward side support and the leeward side support are respectively arranged at two ends of the fixed support, wherein the bottom of the leeward side support is connected with the top of the fixed support;

9. The wind and sand prevention device with a sloping barrier net structure according to claim 2, wherein said bracket assembly further comprises: the fixed support is respectively connected with the windward side support and the leeward side support;

the leeward side of the fixed strut is connected with the leeward side bracket and is intersected with the fixed bracket;

10. The wind and sand prevention device with a sloping barrier net structure according to claim 2, wherein said bracket assembly further comprises: the windward side support and the leeward side support are respectively arranged at two ends of the fixed support, wherein the bottom of the windward side support is connected with the top of the fixed support;

11. The wind and sand prevention device with a sloping barrier net structure according to claim 2, wherein said bracket assembly further comprises: the fixed support is respectively connected with the windward side support and the leeward side support;

12. The wind and sand prevention device with an inclined plane net blocking structure according to any one of claims 2 to 11, wherein a connecting part of the bottom of the windward side support and the horizontal support and a connecting part of the bottom of the leeward side support and the horizontal support are provided with a rotating mechanism capable of adjusting the inclination angles of the windward side support and the leeward side support.

13. The wind and sand prevention device with the inclined plane net blocking structure according to claim 12, wherein the windward side bracket forms an included angle between 100 ° and 170 ° with the windward side of the blocking body;

the leeward side bracket and the leeward side of the blocking body form an included angle between 100 degrees and 170 degrees.

14. The wind and sand prevention device with the inclined plane net blocking structure according to any one of claims 2 to 11, wherein the bottom of the windward side support and the horizontal support are hollow structures, and a telescopic sliding support is arranged in the hollow structure;

a plurality of horizontal brackets are arranged between two adjacent sliding brackets on the windward side at intervals, and the blocking net is arranged on a supporting plane formed by the sliding brackets and the horizontal brackets;

a plurality of horizontal supports are arranged between two adjacent sliding supports on one side of the leeward side at intervals, and the blocking net is arranged on a supporting plane formed by the sliding supports and the horizontal supports.

15. The wind and sand preventing device with an inclined plane net blocking structure according to any one of claims 7 to 12, wherein a support bracket for supporting the fixing bracket is or is not provided below the fixing bracket, one end of the support bracket is connected with the fixing pillar or the roadbed surface, and the other end is connected with the fixing bracket.

16. The wind and sand prevention device with the inclined plane net blocking structure according to any one of claims 1 to 12, wherein the blocking body is a non-permeable wall body or a semi-permeable wall body;

holes are distributed on the surface of the semi-ventilation wall body, and ventilation sand-blocking nets or wind-proof dust suppression punching plates matched with the holes in shape are arranged at openings at two ends of each hole.

17. A wind and sand prevention device with a sloping screen structure according to any one of claims 1 to 12, wherein the length and/or height of the windward side support is greater than the length and/or height of the corresponding leeward side support.

18. A wind and sand protection system for a roadbed in a wind and sand area, comprising the wind and sand prevention device with an inclined plane net prevention structure of any one of claims 1 to 17 at least arranged on the windward side of the roadbed in the wind and sand area.

19. The wind and sand protection system of claim 18, wherein the bottom of the fixed column is fixedly connected with a fixed foundation, the bottom of the fixed column is fixed below the roadbed surface of the wind and sand area roadbed through the fixed foundation, and the wind and sand prevention device for the wind and sand prevention area is fixed at the position of the roadbed shoulder of the wind and sand area roadbed through the fixed column.

20. The wind and sand protection system of claim 18, wherein said wind and sand prevention devices are respectively disposed on two opposite sides of said wind and sand area subgrade, said wind and sand prevention device on the windward side of said wind and sand area subgrade is a first wind and sand prevention device, said wind and sand prevention device on the leeward side of said wind and sand area subgrade is a second wind and sand prevention device, and the windward sides of said first wind and sand prevention device and said second wind and sand prevention device are both located on the outer side of said wind and sand area subgrade.

21. The wind and sand protection system of a roadbed in a wind and sand area of claim 18, wherein the height of the first wind and sand prevention device is higher than that of the second wind and sand prevention device, and the total height of the second wind and sand prevention device is 0.35 to 0.7 times of that of the first wind and sand prevention device.