CN217419158U - Lateral water blocking device suitable for railway roadbed - Google Patents
Lateral water blocking device suitable for railway roadbed Download PDFInfo
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- CN217419158U CN217419158U CN202220999537.3U CN202220999537U CN217419158U CN 217419158 U CN217419158 U CN 217419158U CN 202220999537 U CN202220999537 U CN 202220999537U CN 217419158 U CN217419158 U CN 217419158U
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Abstract
The utility model provides a lateral water blocking device suitable for a railway roadbed, which belongs to the field of civil engineering and comprises a first water blocking structure, a second water blocking structure and a third water blocking structure, wherein the second water blocking structure is positioned between the first water blocking structure and the third water blocking structure; the first water blocking structure comprises a trapezoid drainage ditch with a wide upper part and a narrow lower part and an infiltration ditch, and the infiltration ditch is arranged adjacent to the lower surface of the trapezoid drainage ditch; the second water-blocking structure comprises a cement soil compaction water-blocking pile adopting sulfate erosion resistant cement; the third water blocking structure comprises a plant protective layer planted with saline-alkali tolerant plants and an L-shaped water blocking stone, and the L-shaped water blocking stone is positioned between the plant protective layer and the lateral water blocking piles; the infiltration ditch is a stone-filled infiltration ditch and comprises a closed layer formed by rammed clay and double-layer reverse-paved turf and a water permeable structure formed by coarse sand, stone chips, broken stones and a geotextile reverse filter layer. The utility model has the advantages of being simple in structure and easy and simple to handle, the effect is excellent, can carry out the waterproof and drainage of side direction to existing railway roadbed.
Description
Technical Field
The utility model relates to a side direction water blocking device suitable for railway roadbed belongs to geotechnique's technical field.
Background
The western major development strategy enables remote areas and cities to start large-scale infrastructure construction, the northwest areas are main salinized areas of China, such as Xinjiang, Gansu, Qinghai and the like, and high-speed railway engineering construction activities are increasingly performed in the salinized soil areas. The arid climatic conditions, special terrain and geological hydrological conditions and frequent human activities in the area inevitably cause side water to enter the interior of the roadbed, so that irreversible damage is caused, such as roadbed settlement, slurry turning, salt expansion, frost expansion, corrosion damage, erosion expansion and other diseases.
At present, the main measures for preventing water and salt migration include the measures of improving the height of a roadbed, laying an isolating layer, improving the structural form of the roadbed and the like, most of the measures aim at a newly-built railway, and relatively few measures are taken for the existing railway, so that a water prevention and drainage device aiming at the existing railway is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem in the prior art, and the utility model provides a simple structure, easy and simple to handle, the excellent side direction water blocking device who is applicable to the railway roadbed of effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a lateral water blocking device suitable for a railway roadbed comprises a first water blocking structure, a second water blocking structure and a third water blocking structure, wherein the second water blocking structure is positioned between the first water blocking structure and the third water blocking structure;
the first water blocking structure comprises a trapezoid drainage ditch with a wide upper part and a narrow lower part and an infiltration ditch, and the infiltration ditch is arranged adjacent to the lower surface of the trapezoid drainage ditch; the second water-blocking structure comprises a plurality of lateral water-blocking piles; the water blocking structure III comprises a plant protective layer and an L-shaped water blocking stone, and the L-shaped water blocking stone is positioned between the plant protective layer and the lateral water blocking pile;
the seepage ditch is a stone-filled seepage ditch and comprises tamped clay, a double-layer reverse turf, a coarse sand layer, a stone chip layer, a gravel layer and a geotextile reverse filter layer;
the lateral water-blocking piles are cement soil compaction water-blocking piles adopting sulfate erosion resistant cement;
the plant protective layer consists of saline-alkali tolerant plants.
The ratio of the bottom width to the depth of the trapezoid drainage ditch is 2:3, and the slope rate of the side slope of the ditch wall is more than or equal to 2 thousandths and less than 5 thousandths.
Furthermore, a grouted rubble erosion-resistant protective layer is arranged on the trapezoid drainage ditch.
Furthermore, the infiltration ditch is a stone filling infiltration ditch, wherein tamped clay is arranged above the double-layer reverse-paved turf, and the tamped clay and the double-layer reverse-paved turf form a closed layer of the stone filling infiltration ditch together; and a water permeable structure is arranged below the closed layer and comprises a geotextile reversed filter layer, a coarse sand layer, a stone chip layer and a gravel layer which are wrapped from outside to inside layer by layer.
Preferably, the thickness of the sealing layer is more than or equal to 0.5m, the thickness of the coarse sand layer is 0.25m, the thickness of the stone chip layer is 0.15 m-0.20 m, and the thickness of the crushed stone layer is 0.4 m-0.6 m.
Furthermore, the lateral water-blocking piles are of a layered filling structure of a filling body formed by cement soil. The material of cement soil is sulfate-resistant cement and plain loess mixture, and the ratio of sulfate-resistant cement to plain loess is 1: 9.
furthermore, the lateral water-blocking piles are arranged in double rows in a quincunx manner.
Furthermore, the saline-alkali tolerant plant in the plant protective layer is shrub of vitex rotundifolia.
Furthermore, the long edge of the L-shaped water retaining stone is perpendicular to the ground, the short edge of the L-shaped water retaining stone is completely buried under the ground and faces one side of the plant protection layer, and the height of the part, buried under the ground, of the long edge of the L-shaped water retaining stone accounts for 70% -90% of the height of the long edge of the L-shaped water retaining stone.
Furthermore, the height of the long edge of the L-shaped water retaining stone buried under the ground accounts for 80 percent of the height of the long edge; the long edge of the L-shaped water retaining stone is 1m, wherein the underground buried depth is 0.8m, the overground buried depth is 0.2m, and the width is 0.1 m.
The using method of the device comprises the following steps:
firstly, carrying out stone filling and ditch infiltrating construction, wherein the stone filling and ditch structure sequentially comprises the following steps from inside to outside: the permeable structure that gravel layer, stone chip layer, coarse sand layer, geotechnological cloth reversed filter layer constitute then sets up the double-deck closed course that the turf and the tamped clay of anti-spreading are constituteed on the permeable structure, and the closed course of stone-filling infiltration ditch should be located above the ground water level, and the impervious barrier that the infiltration ditch lower extreme should bury in, so design can get rid of the inside moisture of road bed in the at utmost. The second step is trapezoidal escape canal construction, carries out the third step cement soil compaction stake construction after trapezoidal escape canal construction finishes, finally forms the double side direction stake that blocks water that is arranged of plum blossom shape, and its construction notice is: after a construction site is leveled and pile arrangement positions are determined by measuring and lofting, pile compaction is carried out by using a pile driver until the pile arrangement positions are reached, then the pile driver is withdrawn, the thickness of each layer of cement soil is controlled by cement soil backfill time, and cement soil is backfilled in layers until backfill tamping reaches a leveling elevation so as to form a cement soil compaction pile. And fourthly, arranging the L-shaped water retaining stones, wherein the height of each L-shaped water retaining stone is 1m, the burial depth is 0.8m, and the width is 0.1 m. And fifthly, the plant protection layer is paved by green plants, the green plants adopt the shrubs of the vitex rotundifolia which have strong adaptability, barren resistance, strong stress resistance and excellent desalting effect, and soil bodies at the lower parts of the green plants are changed and filled into planting soil suitable for the growth of the green plants.
Compared with the prior art, the invention has the beneficial effects that:
the utility model has the functions of precipitation and salt elimination, can prevent and eliminate surface water, has stable structure and does not need frequent maintenance after being built; the infiltration ditches positioned at the lower parts of the drainage ditches have the functions of intercepting and removing underground water, can remove water of the roadbed body, the grain size of the filled infiltration ditches is gradually increased from outside to inside, the drainage speed can be accelerated, silting failure is prevented, and the sealing layer can play a role of protecting the internal structure of the infiltration ditches; the lateral water-blocking piles have the function of compacting soil bodies, can prevent lateral water from coming from two sides of the roadbed and prevent lateral water from entering the roadbed, and the cement soil compacting piles prepared from the raw loess and the sulfate-resistant cement have better water impermeability and better compaction effect on soil among piles by adopting quincunx arrangement; it plants salt-tolerant alkali-resistant plant to be assisted with the plant inoxidizing coating, utilizes the plant to the absorption effect of external water source etc. on the one hand, and on the other hand can utilize the transpiration of plant to absorb the inside moisture of soil body, and inside the manger plate stone can prevent green planting occurrence water source entering road bed on the one hand, on the other hand prevents the destruction of green root system to cement soil compaction stake. The L-shaped water retaining stone has the advantages of simple and convenient construction and less material consumption.
The lateral water blocking device is simple in structure, simple and convenient to operate and excellent in effect, and can laterally prevent water and drain water for the existing railway roadbed.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
Fig. 2 is a schematic structural view of the middle infiltration trench of the present invention.
Fig. 3 is a top view of the lateral water blocking pile of the present invention.
Wherein, 1 trapezoidal escape canal, 2 infiltration ditches, 3 side direction water-blocking piles, 4L type water-blocking stone, 5 plant protective layers, 6 planting soil.
Detailed Description
Hereinafter, an embodiment of a lateral water blocking device suitable for a railroad bed of the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
In the description of the present invention, it should be noted that the terms "top", "bottom", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It is noted that the drawings are not necessarily to the same scale, emphasis instead being placed upon clearly illustrating the structure of various elements of embodiments of the present invention. Like reference numerals are used to denote like parts.
The principles and features of the present invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to explain the present invention and not to limit the scope of the invention. The preferred embodiment of the present invention will be described in further detail with reference to fig. 1.
Example 1: a lateral water blocking device suitable for a railway roadbed comprises a first water blocking structure a, a second water blocking structure b and a third water blocking structure c, wherein the first water blocking structure a and the third water blocking structure c are respectively positioned on two sides of the second water blocking structure b;
the water blocking structure I comprises a drainage ditch 1 and an infiltration ditch 2, wherein the drainage ditch 1 is in a trapezoid shape with a wide upper part and a narrow lower part, the drainage ditch 1 is arranged at the upper part of the infiltration ditch 2, and the lower surface of the drainage ditch 1 is tightly attached to the upper surface of the infiltration ditch 2; the water blocking structure II b comprises a plurality of lateral water blocking piles 3; the water blocking structure III c comprises a plant protective layer 5 and an L-shaped water blocking stone 4, and the L-shaped water blocking stone 4 is located between the plant protective layer 5 and the lateral water blocking pile 3.
The seepage ditch 2 is a stone-filled seepage ditch and comprises tamped clay 201, a double-layer reverse-paved turf 202, a coarse sand layer 203, a stone chip layer 204, a gravel layer 205 and a geotextile reverse filter layer 206.
The lateral water-blocking piles 3 are of a layered filling structure of a filling body formed by cement soil. The lateral water-blocking piles 3 are cement soil compaction water-blocking piles adopting sulfate erosion resistant cement.
The plant protective layer 5 is composed of saline-alkali tolerant plants.
On the basis of the embodiment 1, referring to fig. 2, in the embodiment 2, the ratio of the bottom width to the depth of the trapezoidal drainage ditch 1 is 2:3, and the slope rate of the side slope of the ditch wall is more than or equal to 2 per thousand and less than 5 per thousand.
On the basis of the embodiment 1, referring to fig. 2, the trapezoid drainage ditch 1 in the embodiment 3 is provided with a grouted rubble erosion-proof protective layer.
On the basis of the embodiment 1, the embodiment 2 or the embodiment 3, referring to fig. 2, the infiltration ditch 2 in the embodiment 4 is a stone-filled infiltration ditch, wherein the tamped clay 201 is arranged above the double-layer reverse-paved turf 202, and the two layers form a closed layer of the stone-filled infiltration ditch together; a water permeable structure is arranged below the closed layer, and the water permeable structure comprises a geotextile inverted filter layer 206, a coarse sand layer 203, a stone chip layer 204 and a gravel layer 205 which are wrapped from outside to inside layer by layer.
Further, the thickness of the sealing layer is more than or equal to 0.5 m; the thickness of the coarse sand layer 203 is 0.25 m; the thickness of the stone chip layer 204 is 0.15 m-0.20 m, and preferably, the thickness of the stone chip layer 205 is 0.4 m-0.6 m.
On the basis of any one of embodiments 1 to 4, referring to fig. 2, the filling material composed of cement soil in the lateral water-blocking piles 3 in embodiment 5 is a mixture of sulfate-resistant cement and raw loess, wherein the ratio of the sulfate-resistant cement to the raw loess is 1: 9.
furthermore, the lateral water-blocking piles 3 are cement-soil compaction piles with the diameter D of 0.4m, the pile spacing D of 2.5D and the pile length L of 8 m.
Further, on the basis of the embodiment 5, referring to fig. 3, in the embodiment 6, the lateral water-blocking piles 3 are arranged in two rows in a quincunx manner.
The compaction pile is formed by extruding holes by using methods such as impact, explosive expansion, pipe sinking or drilling and tamping expansion and the like, and tamped soil ash or cement materials are backfilled in time to generate a lateral compaction effect on soil bodies in the holes, so that the compaction pile serves as a lateral water blocking device to prevent underground water on two sides of the roadbed from entering the roadbed body.
On the basis of the above embodiments, the saline-alkali resistant plant in the plant protection layer 5 is a shrub of vitex negundo with strong adaptability, barren resistance, strong stress resistance and excellent desalting effect, and vitex negundo is an excellent ground cover plant and is particularly suitable for greening sandy soil and alkaline soil areas.
On the basis of the above embodiment, the long edge of the L-shaped water blocking stone 4 is perpendicular to the ground, the short edge of the L-shaped water blocking stone is completely buried under the ground and faces one side of the plant protection layer 5, and the height of the buried part of the long edge of the L-shaped water blocking stone 4 accounts for 70% -90% of the height of the long edge of the L-shaped water blocking stone 4.
Furthermore, the height of the long edge of the L-shaped water retaining stone 4 buried in the ground accounts for 80% of the height of the long edge; the long side of the L-shaped water retaining stone 4 is 1m, wherein the underground buried depth is 0.8m, the ground is 0.2m, and the width is 0.1 m.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a side direction device that blocks water suitable for railway roadbed which characterized in that: the waterproof structure comprises a first waterproof structure (a), a second waterproof structure (b) and a third waterproof structure (c), wherein the second waterproof structure (b) is positioned between the first waterproof structure (a) and the third waterproof structure (c);
the water blocking structure I (a) comprises a trapezoid drainage ditch (1) with a wide upper part and a narrow lower part and an infiltration ditch (2), wherein the infiltration ditch (2) is arranged adjacent to the lower surface of the trapezoid drainage ditch (1); the second water blocking structure (b) comprises a plurality of lateral water blocking piles (3); the third water blocking structure (c) comprises a plant protective layer (5) and an L-shaped water blocking stone (4), and the L-shaped water blocking stone (4) is located between the plant protective layer (5) and the lateral water blocking piles (3);
the infiltration ditch (2) is a stone-filled infiltration ditch and comprises tamped clay (201), a double-layer reverse turf laying (202), a coarse sand layer (203), a stone chip layer (204), a gravel layer (205) and a geotextile reverse filter layer (206);
the lateral water-blocking piles (3) are cement soil compaction water-blocking piles adopting sulfate erosion resistant cement;
the plant protective layer (5) is composed of saline-alkali tolerant plants.
2. A lateral water-blocking device for a railway subgrade according to claim 1, in which: the ratio of the bottom width to the depth of the trapezoid drainage ditch (1) is 2:3, and the slope rate of the side slope of the ditch wall is more than or equal to 2 thousandths and less than 5 thousandths.
3. A lateral water-blocking device, adapted to be used on a railway foundation, according to claim 1 or 2, wherein: and a mortar rubble anti-scouring protective layer is arranged on the trapezoid drainage ditch (1).
4. A lateral water-blocking device for a railway subgrade according to claim 1, in which: tamping clay (201) in the stone-filling infiltration ditch is arranged above the double-layer reverse turf laying (202), and the two layers form a closed layer of the stone-filling infiltration ditch together; and a water permeable structure is arranged below the closed layer, and the water permeable structure comprises a geotextile reversed filter layer (206), a coarse sand layer (203), a stone chip layer (204) and a gravel layer (205) which are wrapped from outside to inside layer by layer.
5. A lateral water-blocking device for railway foundations according to claim 4, characterized in that: the thickness of the sealing layer is more than or equal to 0.5m, the thickness of the coarse sand layer (203) is 0.25m, the thickness of the stone chip layer (204) is 0.15 m-0.20 m, and the thickness of the broken stone layer (205) is 0.4 m-0.6 m.
6. A lateral water-blocking device for a railway subgrade according to claim 1, in which: the lateral water-blocking piles (3) are of a layered filling structure of a filling body formed by cement soil.
7. A lateral water-blocking device, adapted to be used on a railway foundation, according to claim 1 or 6, wherein: the lateral water-blocking piles (3) are arranged in double rows in a quincunx mode.
8. A lateral water-blocking device for a railway subgrade according to claim 1, in which: the saline-alkali tolerant plant in the plant protective layer (5) is a shrub of vitex rotundifolia.
9. A lateral water-blocking device for a railway subgrade according to claim 1, in which: the long edge of the L-shaped water retaining stone (4) is perpendicular to the ground, the short edge of the L-shaped water retaining stone is completely buried underground and faces one side of the plant protective layer (5), and the height of the part, buried underground, of the long edge of the L-shaped water retaining stone accounts for 70% -90% of the height of the long edge of the L-shaped water retaining stone (4).
10. A lateral water-blocking device adapted for a railway subgrade according to claim 9, in which: the height of the long edge of the L-shaped water retaining stone (4) buried in the ground accounts for 80% of the height of the long edge; the long edge of the L-shaped water retaining stone (4) is 1m, wherein the underground buried depth is 0.8m, the overground buried depth is 0.2m, and the width is 0.1 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220999537.3U CN217419158U (en) | 2022-04-27 | 2022-04-27 | Lateral water blocking device suitable for railway roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220999537.3U CN217419158U (en) | 2022-04-27 | 2022-04-27 | Lateral water blocking device suitable for railway roadbed |
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| Publication Number | Publication Date |
|---|---|
| CN217419158U true CN217419158U (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220999537.3U Active CN217419158U (en) | 2022-04-27 | 2022-04-27 | Lateral water blocking device suitable for railway roadbed |
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| CN (1) | CN217419158U (en) |
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- 2022-04-27 CN CN202220999537.3U patent/CN217419158U/en active Active
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