Sand sand protection system in railway diversion dike and using method thereof

Abstract

The invention relates to a wind and sand protection system in a railway diversion dike and a using method thereof. The wind and sand protection system comprises a foundation base buried underground. The foundation base is connected with a sand barrier stand column through an embedded component. A first sand barrier unit, a second sand barrier unit and / or a third sand barrier unit are arranged between the two sand barrier stand columns. The first sand-protecting barrier unit, the second sand-protecting barrier unit and the third sand-protecting barrier unit are provided with different pores; a foundation protection layer is further arranged on the surface of the foundation base; and a sand stabilization layer is arranged on at least one side of the foundation protection layer. In order to solve the problems that no sand prevention device exists in an existing diversion dike, sand accumulation at a culvert opening is serious and the like, the sand and sand protection system or method in the railway diversion dike is designed, space cooperation is formed through a sand gravel cushion layer and a plurality of sand barrier units, and a honeycomb-shaped soil fixation grating is matched, so that erosion of soil around a foundation is reduced, and damage of flood and the like to sand prevention facilities is reduced.

Description

Technical Field

[0001] The invention relates to a wind and sand protection system, in particular to a wind and sand protection system in a railway diversion embankment and a use method thereof, and belongs to the technical field of roadbed design. Background Art

[0002] Taking into account the railway diversion embankment under the action of water flow, according to existing engineering experience, first of all, it will cause the soil around the sand barrier foundation to be scoured, and then cause the sand barrier to fall. In addition, the sand barrier is easy to rot under the immersion of water. Therefore, at present, sand prevention facilities are generally not set in the diversion embankment, resulting in serious sand accumulation, especially at the culvert mouth, and even some sand has climbed onto the railway roadbed, affecting driving safety. In addition, when there is a flood, excessive sand accumulation at the culvert mouth and other places can easily cause the waterway to overflow the diversion embankment and enter the roadbed area where no scouring protection is set, thereby causing the sand prevention facilities in other areas to be soaked and damaged, and the railway roadbed to be scoured. For this reason, the present invention proposes a wind and sand protection system or method in the railway diversion embankment. On the one hand, by changing the system, the foundation form of the sand barrier columns is changed and the surrounding soil is physically reinforced, thereby reducing the influence of water flow on the stability of the sand barrier. On the other hand, by flexibly adjusting the pores and height of the sand barrier, the damaged sand barrier units are replaced in real time to improve the sand barrier sand blocking efficiency. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a wind and sand protection system in a railway diversion dike and a method of using the same, so as to improve the structural stability, make the use and adjustment flexible and convenient, and enhance the sand blocking efficiency.

[0004] In order to achieve the above-mentioned purpose, the technical solutions adopted by the present invention are as follows:

[0005] A wind and sand protection system in a railway diversion dike comprises a foundation base buried below the ground; sand barrier columns are connected to the foundation base via pre-embedded components; a first sand barrier unit, a second sand barrier unit and / or a third sand barrier unit are arranged between two of the sand barrier columns; the first sand barrier unit, the second sand barrier unit and the third sand barrier unit have different pores; a foundation protection layer is also arranged on the surface of the foundation base; and a sand fixation layer is arranged on at least one side of the foundation protection layer.

[0006] Furthermore, the sand barrier column is formed by connecting a plurality of vertically connected column sections; the sand barrier column is made of steel; the bottom column section is provided with a flange; a screw hole is provided on the embedded component relative to the flange; the bottom column section is connected to the embedded component through a nut.

[0007] Furthermore, the basic base is an elliptical concrete base; a screw connection box is provided on each column section; each column section is cross-connected and fixed by column bolts on the flared connection box; and the long axis direction of the basic base is flush with the water flow direction.

[0008] Furthermore, a fixed cross bar is arranged between two horizontally adjacent sand barrier columns; a cross bar hole is arranged on each column section; the fixed cross bar is connected to the column section by bolts; there are two fixed cross bars; the first sand barrier unit and the second sand barrier unit, and the second sand barrier unit and the third sand barrier unit are respectively separated by fixed cross bars.

[0009] Furthermore, the first sand barrier unit, the second sand barrier unit and the third sand barrier unit are respectively connected to the fixed cross bar through sand barrier fixing bolts; the first sand barrier unit is a small-pore sand barrier unit; the second sand barrier unit is a medium-pore sand barrier unit; and the third sand barrier unit is a large-pore sand barrier unit.

[0010] Furthermore, a water passage is formed between the first sand barrier unit and the base protection layer; the base protection layer includes a skeleton iron wire and a honeycomb-shaped soil-fixing grid.

[0011] Furthermore, the first sand barrier unit is made of hard polyethylene plastic; the second sand barrier unit and the third sand barrier unit are made of polyethylene plastic or reeds.

[0012] Furthermore, the skeleton wire is embedded in the ground soil layer; the honeycomb-shaped soil-fixing grid is arranged on the inner side of the skeleton wire; the column section located at the bottom is in the gap of the honeycomb-shaped soil-fixing grid; and a covering soil layer is arranged on the surface of the skeleton wire and the honeycomb-shaped soil-fixing grid.

[0013] Furthermore, the sand-fixing layer is a sand and gravel cushion layer; the sand and gravel cushion layer is higher than the covering soil layer.

[0014] The following steps are involved:

[0015] Step 1: After connecting the bottom column section to the embedded component through a nut, the remaining column sections are connected in sequence through the flared connection box to form a sand barrier column;

[0016] Step 2: After two or more sand barrier columns are formed by combining in step 1, a fixing cross bar is inserted into the two sand barrier columns through the cross bar holes, and fixed to the sand barrier columns by bolts;

[0017] Step 3: Install the first sand barrier unit, the second sand barrier unit and the third sand barrier unit between the upper and lower fixed cross bars and fix them with fixing bolts;

[0018] Step 4: Place honeycomb-shaped soil-fixing grids on the ground around the sand barrier columns, then fill soil in each grid, and finally fill soil on the surface of the honeycomb-shaped soil-fixing grid.

[0019] Step 5: Lay gravel with a width of not less than 0.5m as a sand-fixing layer at a distance of 1.5-2.5m from the sand barrier column.

[0020] The present invention has the following beneficial effects: First, in view of the problems that there is no anti-sand setting in the existing diversion embankment and the serious sand accumulation at the culvert entrance, a sand and wind protection system or method is designed in the railway diversion embankment, which forms spatial coordination with a plurality of sand barrier units through a gravel cushion layer, and then cooperates with a honeycomb-shaped soil-fixing grid to reduce the erosion of the soil around the foundation and the damage to the sand control facilities caused by floods. At the same time, by reserving a water passage and setting an elliptical foundation base, it can effectively dredge the water flow, reduce the flow resistance of the water flow, and prevent a large water pressure from being caused at the same position, which may cause damage to the facilities.

[0021] Secondly, the sand barrier units can be adaptively adjusted according to the intensity of the wind and sand flow, and sand barrier units with more suitable pores can be selected to adapt to the current wind and sand flow intensity. For example: when the intensity of the wind and sand flow is large, several sand barrier units can be added to the existing sand barrier through the expansion connection box of the top column through cross bolts. In addition, the existing sand barrier units with larger pores can be replaced by sand barrier units with smaller pores to enhance the sand prevention efficiency; when the intensity of the wind and sand flow is small, several sand barrier units on the existing sand barrier can be removed through the expansion of the top column. In addition, the existing sand barrier units with smaller pores can be replaced by sand barrier units with larger pores to reduce the waste of sand blocking resources. In addition, the damaged sand barrier units can be replaced in real time through bolts, which improves the utilization rate and sand blocking efficiency of the sand barrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the front structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the side structure of the present invention.

[0024] Figure 3 Schematic diagram of the positional relationship between the honeycomb-shaped soil-fixing grid and the sand barrier columns.

[0025] Figure 4 It is a schematic structural diagram of another embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the partial structure of the honeycomb-shaped soil-fixing grid.

[0027] Among them: 1 is the foundation base, 2 is the embedded component, 3 is the sand barrier column, 3-1 is the column section, 4 is the first sand barrier unit, 5 is the second sand barrier unit, 6 is the third sand barrier unit, 7 is the flange, 8 is the fixed cross bar, 9 is the cross bar hole, 10 is the sand barrier fixing bolt, 11 is the column bolt, 12 is the water passage, 13 is the skeleton wire, 14 is the honeycomb soil-fixing grid, 15 is the covering soil layer, and 16 is the gravel cushion layer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art, unless the terms are defined differently. It should be understood that the terms defined in commonly used dictionaries have the same meaning as those in the prior art.

[0030] Embodiment 1

[0031] See also Figure 1-Figure 3 A wind and sand protection system in a railway diversion dike comprises a basic base 1 buried below the ground; a sand barrier column 3 is connected to the basic base 1 through a pre-embedded component 2; a first sand barrier unit 4, a second sand barrier unit 5 and / or a third sand barrier unit 6 are arranged between two of the sand barrier columns 3; the first sand barrier unit 4, the second sand barrier unit 5 and the third sand barrier unit 6 have different pores; a basic protective layer is also arranged on the surface of the basic base 1; a sand fixation layer is arranged on at least one side of the basic protective layer.

[0032] Furthermore, the sand barrier column 3 is composed of a plurality of vertically connected column sections 3-1; the sand barrier column 3 is made of steel; the bottom column section 3-1 is provided with a flange 7; a screw hole is provided on the embedded component 2 relative to the flange 7; the bottom column section 3-1 is connected to the embedded component 2 through a nut.

[0033] Furthermore, the basic base 1 is an elliptical concrete base; a screw connection box is provided on each column section 3-1; each column section 3-1 is cross-connected and fixed by the column bolts 11 on the flared connection box; the long axis direction of the basic base 1 is flush with the water flow direction.

[0034] In this embodiment, the sand barrier columns are made of steel, and the flange of the bottom column section 3-1 is connected to the embedded component 2 in the elliptical concrete foundation base 1 by nuts. The column sections 3-1 are cross-connected and fixed with bolts on the flared connection box. The foundation is buried at least 70 cm below the ground, and the foundation adopts an elliptical cross-section foundation, and the major axis direction of the ellipse is parallel to the water flow direction.

[0035] The flared connection box is a common metal connection piece, so its structure will not be described in detail. The flared connection box can not only connect each column section 3-1, but also increase the connection of sand barrier units.

[0036] Furthermore, a fixed cross bar 8 is arranged between two horizontally adjacent sand barrier columns 3; a cross bar hole 9 is arranged on each column section 3-1; the fixed cross bar 8 is connected to the column section 3-1 by bolts; the fixed cross bars 8 include two; the first sand barrier unit 4 and the second sand barrier unit 5, and the second sand barrier unit 5 and the third sand barrier unit 6 are separated by fixed cross bars 8 respectively.

[0037] In this embodiment, the cross bar is made of bamboo or the like and is cylindrical in shape. Both ends are fixed by passing through the existing cross bar holes on the sand barrier columns. In addition, the cross bar is also connected to the first / second / third sand barriers at intervals of 10 cm by bolts, acting as a skeleton in the entire sand barrier system.

[0038] Furthermore, the first sand barrier unit 4, the second sand barrier unit 5 and the third sand barrier unit 6 are respectively connected to the fixed cross bar 8 through the sand barrier fixing bolts 10; the first sand barrier unit 4 is a small-pore sand barrier unit; the second sand barrier unit 5 is a medium-pore sand barrier unit; and the third sand barrier unit 6 is a large-pore sand barrier unit.

[0039] Furthermore, a water passage 12 is formed between the first sand barrier unit 4 and the base protection layer; the base protection layer includes a skeleton wire 13 and a honeycomb-shaped soil-fixing grid 14.

[0040] Furthermore, the first sand barrier unit 4 is made of hard polyethylene plastic; the second sand barrier unit 5 and the third sand barrier unit 6 are made of polyethylene plastic or reeds.

[0041] Specifically, the first sand barrier unit 4 of the bottom layer is made of hard polyethylene plastic with high tensile strength and can resist immersion in water; the second sand barrier unit 5 and the third sand barrier unit 6 of the upper layer can be made of polyethylene plastic or reeds, etc. The sand barriers of different porosity units are fixed on the cross bar by nuts, and the fixing parts of adjacent porosity sand barriers need to overlap by 2 to 5 cm.

[0042] Furthermore, the skeleton wire 13 is embedded in the ground soil layer; the honeycomb-shaped soil-fixing grid 14 is arranged on the inner side of the skeleton wire 13; the column section 3-1 located at the bottom is in the gap of the honeycomb-shaped soil-fixing grid 14; and a covering soil layer 15 is arranged on the surface of the skeleton wire 13 and the honeycomb-shaped soil-fixing grid 14.

[0043] The honeycomb-shaped soil-fixing grid 14 is centered on the barrier column 3, and its coverage area should not be less than 1 m2; at the same time, the thickness of the covering soil layer 15 should not be less than 5 cm.

[0044] Furthermore, the sand-fixing layer is a sand-gravel cushion layer 16; the sand-gravel cushion layer 16 is higher than the covering soil layer.

[0045] Specifically, the honeycomb soil-fixing grid is made of hard plastic and is connected into one by two layers of galvanized iron wire. During construction, the honeycomb soil-fixing grid is buried around the foundation, backfill is added to each grid, and 5 cm thick covering soil is added to the upper layer.

[0046] The gravel cushion layer is made by laying gravel with a width of not less than 0.5m at a distance of 2m from the sand barrier, so that the gravel layer is not less than 15cm above the original ground. It should be noted that the gravel is arranged on the path from the water flow direction to the sand barrier column, and is set on the back side of the sand barrier in the direction of the windward sand flow.

[0047] The following steps are involved:

[0048] Step 1: After connecting the bottom column section to the embedded component through a nut, the remaining column sections are connected in sequence through the flared connection box to form a sand barrier column;

[0049] Step 2: After two or more sand barrier columns are formed by combining in step 1, a fixing cross bar is inserted into the two sand barrier columns through the cross bar holes, and fixed to the sand barrier columns by bolts;

[0050] Step 3: Install the first sand barrier unit, the second sand barrier unit and the third sand barrier unit between the upper and lower fixed cross bars and fix them with fixing bolts;

[0051] Step 4: Place honeycomb-shaped soil-fixing grids on the ground around the sand barrier columns, then fill soil in each grid, and finally fill soil on the surface of the honeycomb-shaped soil-fixing grid.

[0052] Step 5: Lay gravel with a width of not less than 0.5m as a sand-fixing layer at a distance of 1.5-2.5m from the sand barrier column.

[0053] Embodiment 2

[0054] See also Figure 2In this embodiment, the arrangement mode and number of the sand barrier units can be changed by changing the number and gap distance of the fixed crossbars 8. In this embodiment, a single sand barrier unit is used, but the sand barrier unit has uneven pores and a large number of pore types.

[0055] Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention rather than limiting it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wind and sand protection system in a railway diversion dike, characterized by: The invention comprises a basic base (1) buried below the ground; a sand barrier column (3) is connected to the basic base (1) via a pre-buried component (2); a first sand barrier unit (4), a second sand barrier unit (5) and / or a third sand barrier unit (6) are arranged between two of the sand barrier columns (3); the first sand barrier unit (4), the second sand barrier unit (5) and the third sand barrier unit (6) have different pores; a basic protective layer is also arranged on the surface of the basic base (1); and a sand fixation layer is arranged on at least one side of the basic protective layer.

2. A railway diversion dike wind and sand protection system according to claim 1, characterized in that: The sand barrier column (3) is formed by connecting a plurality of vertically connected column sections (3-1); the sand barrier column (3) is made of steel; the bottom column section (3-1) is provided with a flange (7); a screw hole is provided on the embedded component (2) relative to the flange (7); the bottom column section (3-1) is connected to the embedded component (2) through a nut.

3. A wind and sand protection system in a railway diversion dike according to claim 2, characterized in that: The basic base (1) is an elliptical concrete base; each column section (3-1) is provided with a screw connection box; each column section (3-1) is cross-connected and fixed by column bolts (11) on the flared connection box; the long axis direction of the basic base (1) is flush with the water flow direction.

4. A wind and sand protection system in a railway diversion dike according to claim 3, characterized in that: A fixed cross bar (8) is arranged between two horizontally adjacent sand barrier columns (3); a cross bar hole (9) is arranged on each column section (3-1); the fixed cross bar (8) and the column section (3-1) are connected by bolts; the fixed cross bars (8) include two; the first sand barrier unit (4) and the second sand barrier unit (5), and the second sand barrier unit (5) and the third sand barrier unit (6) are respectively separated by fixed cross bars (8).

5. A wind and sand protection system in a railway diversion dike according to claim 4, characterized in that: The first sand barrier unit (4), the second sand barrier unit (5) and the third sand barrier unit (6) are respectively connected to the fixed cross bar (8) via sand barrier fixing bolts (10); the first sand barrier unit (4) is a small-pore sand barrier unit; the second sand barrier unit (5) is a medium-pore sand barrier unit; and the third sand barrier unit (6) is a large-pore sand barrier unit.

6. The wind and sand protection system in the railway diversion dike according to claim 5 is characterized by: A water passage (12) is formed between the first sand barrier unit (4) and the base protection layer; the base protection layer comprises a skeleton iron wire (13) and a honeycomb-shaped soil-fixing grid (14).

7. A wind and sand protection system in a railway diversion dike according to claim 6, characterized in that: The first sand barrier unit (4) is made of hard polyethylene plastic; the second sand barrier unit (5) and the third sand barrier unit (6) are made of polyethylene plastic or reeds.

8. The wind and sand protection system in the railway diversion dike according to claim 7 is characterized by: The skeleton wire (13) is embedded in the ground soil layer; the honeycomb-shaped soil-fixing grid (14) is arranged inside the skeleton wire (13); the column section (3-1) located at the bottom is located in the gap of the honeycomb-shaped soil-fixing grid (14); and a covering soil layer (15) is arranged on the surface of the skeleton wire (13) and the honeycomb-shaped soil-fixing grid (14).

9. A railway diversion dike wind and sand protection system according to claim 8, characterized in that: The sand-fixing layer is a sand-gravel cushion layer; the sand-gravel cushion layer is higher than the covering soil layer.

10. The method for using the wind and sand protection system in a railway diversion dike according to claim 1, characterized in that it comprises the following steps: Step 1: After connecting the bottom column section to the embedded component through a nut, the remaining column sections are connected in sequence through the flared connection box to form a sand barrier column; Step 2: After two or more sand barrier columns are formed by combining in step 1, a fixing cross bar is inserted into the two sand barrier columns through the cross bar holes, and fixed to the sand barrier columns by bolts; Step 3: Install the first sand barrier unit, the second sand barrier unit and the third sand barrier unit between the upper and lower fixed cross bars and fix them with fixing bolts; Step 4: Place honeycomb-shaped soil-fixing grids on the ground around the sand barrier columns, then fill soil in each grid, and finally fill soil on the surface of the honeycomb-shaped soil-fixing grid. Step 5: Lay gravel with a width of not less than 0.5m as a sand-fixing layer at a distance of 1.5-2.5m from the sand barrier column.

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