Linear section railway structure of industrial factory

Abstract

The invention provides an industrial plant straight-line section railway structure which comprises an edge sealing clay part used for being laid on a wet type roadbed; two pieces of cloth and one film are laid on the edge sealing clay part; the graded steel slag part is laid on two pieces of cloth and one film; the macadam ballast part is laid on the graded steel slag part; the sleeper is laid at the ballast part; the buffer base plate is laid on the sleeper; the track is laid on the buffer base plate; wherein the graded steel slag parts are compacted in a layered mode according to the equal thickness, the thickness of each graded steel slag layer is smaller than or equal to 20 cm, and the total thickness of the graded steel slag parts is larger than or equal to 100 cm. Through the arrangement, on one hand, the use amount of stone is reduced, the mining cost and the use cost of the stone are reduced, environmental pollution caused by stone mining is reduced, secondary utilization of waste is achieved, and more environmental friendliness is achieved; and on the other hand, the railway structure is not affected by underground capillary water, the structural strength, the mechanical property and the water absorption of the railway structure are improved, and therefore the use stability of the railway structure in the humid roadbed environment is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of straight-segment railway structures in industrial plant areas under wet roadbed conditions, and in particular to a straight-segment railway structure in an industrial plant area. Background Art

[0002] At present, industrial plants usually need railway trucks to transport goods due to the large demand for transportation. In the related technology, the straight section railway structure requires a lot of stone, and the mining and use costs of the stone are high, resulting in a high construction cost of the straight section railway knot. In addition, the mining of stone will cause environmental pollution, water quality damage and land destruction, affecting the environmental protection of the construction of the straight section railway knot.

[0003] Therefore, it is necessary to propose a straight section railway structure for an industrial plant area to at least partially solve the problems existing in the prior art. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, the present disclosure provides a straight section railway structure for an industrial plant;

[0006] In view of this, according to an embodiment of the present disclosure, a straight section railway structure of an industrial plant is proposed, comprising:

[0007] Edge sealing clay part, used for laying on wet type roadbed;

[0008] Two cloths and one membrane are laid on the edge-sealing clay part;

[0009] The graded steel slag part is laid on the above two cloths and one membrane;

[0010] The crushed stone ballast part is laid on the graded steel slag part;

[0011] Sleepers, laid on the above-mentioned crushed stone ballast section;

[0012] A buffer pad is laid on the above sleepers;

[0013] Tracks, laid on the above-mentioned buffer pads;

[0014] Wherein, the graded steel slag portion is compacted in layers of equal thickness, the thickness of each graded steel slag layer is less than or equal to 20 cm, and the total thickness of the graded steel slag portion is greater than or equal to 100 cm.

[0015] In a feasible implementation manner, the above two cloths and one membrane include:

[0016] Two layers of geotextiles and one layer of geomembrane, the geomembrane is arranged between the two layers of geotextiles;

[0017] Among them, the above-mentioned geotextile is a geotextile made of composite non-woven fabric; and the above-mentioned geomembrane is a geomembrane made of plastic material.

[0018] In a feasible embodiment, the mass of the geotextile is 80g / m 2 Up to 600g / m 2 ;

[0019] The thickness of the above geomembrane is 1.2mm to 2.5mm.

[0020] In a feasible implementation manner, the geotextile is overlapped with the geomembrane by means of viscose, and the overlap length of the geotextile and the geomembrane is greater than or equal to 5 cm; and / or the overlap width of the geomembrane is greater than or equal to 30 cm.

[0021] In a feasible implementation manner, the thickness of the edge-sealing clay portion is 60 cm to 80 cm.

[0022] In a feasible implementation manner, the standard specification range of the crushed stone particles in the above-mentioned crushed stone ballast part is 20mm to 70mm, and the weight of the above-mentioned crushed stone particles below the above-mentioned standard specification range is less than or equal to 5% of the total weight of the above-mentioned crushed stone particles; the weight of the above-mentioned crushed stone particles above the above-mentioned standard specification range is less than or equal to 5% of the total weight of the above-mentioned crushed stone particles, and the maximum specification of the above-mentioned crushed stone particles is less than or equal to 100mm.

[0023] In a feasible implementation manner, the width of the graded steel slag portion on each side relative to the crushed stone ballast portion is greater than or equal to 30 cm.

[0024] In a feasible implementation manner, the sleepers are wooden sleepers, the length of the sleepers is 2.5 m, the width is 22 cm, the thickness is 16 cm, and the number of the sleepers is 1920 per kilometer.

[0025] In a feasible implementation manner, the buffer pad is a plastic pad or a rubber pad, and the thickness of the buffer pad is 5 mm to 10 mm.

[0026] In a feasible implementation manner, the mass of the track is 50 kg / m;

[0027] The track gauge of the above track is one of 1435mm, 900mm, 762mm or 600mm;

[0028] The length of each section of the above track is 12.5m or 25m.

[0029] Compared with the prior art, the present disclosure at least includes the following beneficial effects: the straight section railway structure of the industrial plant area provided by the embodiment of the present disclosure is provided with two cloths and one membrane, an edge-sealed clay part, a graded steel slag part, a crushed stone ballast part, sleepers, a buffer pad and a track. Among them, the edge-sealed clay part is laid on the wet type roadbed; the two cloths and one membrane are laid on the edge-sealed clay part; the graded steel slag part is laid on the two cloths and one membrane; the crushed stone ballast part is laid on the graded steel slag part; the sleepers are laid on the crushed stone ballast part; the buffer pads are laid on the sleepers; and the tracks are laid on the buffer pads. The graded steel slag part has gelling properties, micro-expansion properties and good stability. Using graded steel slag to replace part of the crushed stone, on the one hand, reduces the amount of stone used, reduces the mining cost and use cost of stone, and reduces the environmental pollution caused by mining stone. In addition, steel slag, as a by-product of the steelmaking process, is usually landfilled or stored as industrial waste, occupying precious land resources and causing secondary pollution. Using graded steel slag to replace part of the crushed stone can achieve secondary utilization of waste and is more environmentally friendly. On the other hand, the graded steel slag is compacted in layers of equal thickness, the thickness of each graded steel slag layer is less than or equal to 20cm, and the total thickness of the graded steel slag is greater than or equal to 100cm. Such a setting can make the railway structure more suitable for wet type roadbed, so that the railway structure is not affected by underground capillary water, improve the structural strength, mechanical properties and water absorption of the railway structure, and thus improve the stability of the railway structure in wet roadbed environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A schematic structural diagram of a straight-segment railway structure in an industrial plant area according to an embodiment of the present disclosure.

[0032] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0033] 1 track, 2 buffer pad, 3 sleeper, 4 crushed stone ballast part, 5 graded steel slag part, 6 two cloths and one membrane, 7 edge sealing clay part, 8 wet type roadbed. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0035] like Figure 1 As shown, according to the embodiment of the present disclosure, a straight section railway structure of an industrial plant is proposed, including: an edge-sealed clay portion 7, used for laying on a moist type roadbed 8; two cloths and one membrane 6, laid on the above-mentioned edge-sealed clay portion 7; a graded steel slag portion 5, laid on the above-mentioned two cloths and one membrane 6; a crushed stone ballast portion 4, laid on the above-mentioned graded steel slag portion 5; sleepers 3, laid on the above-mentioned crushed stone ballast portion 4; buffer pads 2, laid on the above-mentioned sleepers 3; rails 1, laid on the above-mentioned buffer pads 2; wherein the above-mentioned graded steel slag portion 5 is compacted in layers with equal thickness, the thickness of each graded steel slag layer is less than or equal to 20 cm, and the total thickness of the above-mentioned graded steel slag portion 5 is greater than or equal to 100 cm.

[0036] At present, the steel industry is a very important pillar industry of the national economy. It plays a very important role in economic construction, social development, fiscal and taxation, national defense construction, and stable employment, and has made a very important contribution to ensuring the sound and rapid development of the national economy. However, the contradictions accumulated by the long-term extensive development of the steel industry have become increasingly prominent, especially environmental protection issues, which have become a very important factor restricting the development of the steel industry. Steel slag is a by-product of the steelmaking process, and its output is huge. Most of it is landfilled or stored as industrial waste, occupying precious land resources and causing secondary pollution. The straight section railway structure of the industrial plant area provided in the embodiment of the present disclosure is provided with two cloths and one membrane 6, an edge-sealed clay part 7, a graded steel slag part 5, a crushed stone ballast part 4, sleepers 3, a buffer pad 2 and a track 1. Among them, the edge-sealed clay part 7 is laid on the wet type roadbed 8; the two-cloth-one-film 6 is laid on the edge-sealed clay part 7; the graded steel slag part 5 is laid on the two-cloth-one-film 6; the crushed stone ballast part 4 is laid on the graded steel slag part 5; the sleeper 3 is laid on the crushed stone ballast part 4; the buffer plate 2 is laid on the sleeper 3; and the track 1 is laid on the buffer plate 2. The graded steel slag part 5 has gelling properties, micro-expansion properties and good stability. Using the graded steel slag part 5 to replace part of the crushed stone, on the one hand, reduces the amount of stone used, reduces the mining cost and use cost of the stone, and reduces the environmental pollution caused by mining the stone. In addition, as a by-product of the steelmaking process, steel slag is usually landfilled or stored as industrial waste, occupying precious land resources and causing secondary pollution. Using the graded steel slag part 5 to replace part of the crushed stone can achieve secondary utilization of waste, which is more environmentally friendly. On the other hand, the graded steel slag part 5 is compacted in layers of equal thickness, and the thickness of each graded steel slag layer is less than or equal to 20 cm, and the total thickness of the graded steel slag part 5 is greater than or equal to 100 cm. Such a setting can make the railway structure more suitable for wet type roadbed 8, so that the railway structure is not affected by underground capillary water, improve the structural strength, mechanical properties and water absorption of the railway structure, and thus improve the use stability of the railway structure in a wet roadbed environment.

[0037] It is understood that the maximum particle size of the slag particles of the graded slag part 5 is less than or equal to 37.5 mm, the CBR (California bearing ratio) of the graded slag part 5 is greater than or equal to 120, and the compaction degree of the graded slag part 5 is greater than or equal to 97%. The slope ratio of the graded slag part 5 is 1:1.5, so as to prevent landslides, ensure construction safety and save costs.

[0038] Exemplarily, the roadbed compaction degree at a position of 0 cm to 50 cm below the top surface of the wet type roadbed 8 is greater than or equal to 0.95; the roadbed compaction degree at a position of 50 cm to 120 cm below the top surface of the wet type roadbed 8 is greater than or equal to 0.90; the position below 120 cm below the top surface of the wet type roadbed 8 is the flooded part, and the roadbed compaction degree is greater than or equal to 0.90.

[0039] In some examples, such as Figure 1 As shown, the two-cloth-one-membrane 6 includes: two layers of geotextiles and one layer of geomembrane, and the geomembrane is arranged between the two layers of the geotextiles; wherein the geotextile is a composite non-woven geotextile; and the geomembrane is a plastic geomembrane.

[0040] It can be understood that the two-cloth-one-membrane 6 is provided with two layers of geotextiles and one layer of geomembrane, wherein one layer of geotextiles is laid on the edge-sealed clay part 7, and the geomembrane is arranged between the two layers of geotextiles, and the anti-seepage performance of the straight section railway structure of the industrial plant area is improved by the two parts and one membrane, and it is more suitable for wet type roadbed 8. The geotextile can be made of composite non-woven fabric. Specifically, the composite non-woven fabric geotextile can be made of polyester staple needle-punched geotextile, polyester filament spunbond geotextile, flat wire plastic woven fabric. The geomembrane can be made of plastic geomembrane. Specifically, the plastic material can be made of polyvinyl chloride and polyethylene.

[0041] In some examples, the mass of the geotextile is 80 g / m 2 Up to 600g / m 2 ; The thickness of the above geomembrane is 1.2mm to 2.5mm.

[0042] It is understandable that the mass of geotextile is 80g / m 2 Up to 600g / m 2 The thickness of the geomembrane is 1.2 mm to 2.5 mm, so as to ensure the anti-seepage performance of the two-textile-one-membrane structure and have good structural strength. The fabric weight of the two geotextiles is equal, and the fabric weight of the geotextile / the thickness of the geomembrane is 400 g / 0.5 mm.

[0043] In some examples, the geotextile is overlapped with the geomembrane by means of viscose, and the overlap length of the geotextile and the geomembrane is greater than or equal to 5 cm; and / or the overlap width of the geomembrane is greater than or equal to 30 cm.

[0044] It is understood that the geomembrane can be glued to the geotextile to ensure the connection stability between the geomembrane and the geotextile. Specifically, in order to ensure the connection strength, the overlap length of the geotextile and the geomembrane is greater than or equal to 5 cm, and / or the overlap width of the geomembrane is greater than or equal to 30 cm.

[0045] In some examples, the thickness of the edge-sealing clay portion 7 is 60 cm to 80 cm.

[0046] It is understood that the edge sealing clay part 7 is laid on the two cloths and one film 6, and the thickness of the clay is 60cm to 80cm to ensure the performance of the clay layer. The clay used for the edge sealing clay part 7 should be free of impurities such as domestic garbage and humus.

[0047] In some examples, the standard specification range of the crushed stone particles of the above-mentioned crushed stone ballast section 4 is 20mm to 70mm, and the weight of the above-mentioned crushed stone particles below the above-mentioned standard specification range is less than or equal to 5% of the total weight of the above-mentioned crushed stone particles; the weight of the above-mentioned crushed stone particles above the above-mentioned standard specification range is less than or equal to 5% of the total weight of the above-mentioned crushed stone particles, and the maximum specification of the above-mentioned crushed stone particles is less than or equal to 100mm.

[0048] It is understood that the standard specification range of the crushed stone particles of the crushed stone ballast part 4 is 20mm to 70mm, the weight of the crushed stone particles below the standard specification range is less than or equal to 5% of the total weight of the crushed stone particles; the weight of the crushed stone particles above the standard specification range is less than or equal to 5% of the total weight of the crushed stone particles, and the crushed stone particles larger than 100mm should be removed, and the crushed stone particles should be kept clean and should not contain clay blocks and other impurities. The crushed stone ballast part 4 is compacted in layers of equal thickness, and the thickness of each layer is less than or equal to 200mm. The slope of the crushed stone ballast part 4 is 1:1.5 to prevent landslides, ensure construction safety and save costs.

[0049] In some examples, the width of the graded steel slag portion 5 relative to the crushed stone ballast portion 4 on each side is greater than or equal to 30 cm.

[0050] It can be understood that the width of the graded slag part 5 on each side relative to the crushed stone ballast part 4 is greater than or equal to 30 cm to ensure the connection stability between the graded slag part 5 and the crushed stone ballast part 4 and improve the safety and reliability of the railway structure.

[0051] In some examples, the sleepers 3 are wooden sleepers 3 , the sleepers 3 are 2.5 m long, 22 cm wide, and 16 cm thick, and the number of the sleepers 3 is 1920 per kilometer.

[0052] It is understandable that the sleepers 3 can be made of wood, for example, red pine, larch, masson pine, spruce and fir. The sleepers 3 are 2.5 m long, 22 cm wide and 16 cm thick, and the number of the sleepers 3 is 1920 per kilometer.

[0053] In some examples, the buffer pad 2 is a plastic pad or a rubber pad, and the thickness of the buffer pad 2 is 5 mm to 10 mm.

[0054] It is understandable that the buffer pad 2 can be made of plastic material, and the plastic material can be polyurethane plastic and foam plastic; or the buffer pad 2 can be made of rubber material. By setting the buffer pad 2, the impact force of the track 1 on the sleeper 3 and the structure under the sleeper 3 is reduced, the damage to the railway structure caused by the impact force is reduced, the stability is improved, and the service life of the railway structure is extended. Specifically, the thickness of the buffer pad 2 is 5mm to 10mm to ensure the buffering performance of the buffer pad 2.

[0055] In some examples, the mass of the track 1 is 50 kg / m; the gauge of the track 1 is one of 1435 mm, 900 mm, 762 mm or 600 mm; and the length of each section of the track 1 is 12.5 m or 25 m.

[0056] It is understood that the track 1 can be selected from Class I track 1 or Class II track 1, and the track gauge of the track 1 can be selected from 1435mm, 900mm, 762mm or 600mm according to the actual use. The length of each section of the track 1 is 12.5m or 25m, and the material of the track 1 can be selected from manganese steel, carbon steel, high silicon copper, or the track 1 can be selected from copper rail or silicon rail. The track 1 is quenched throughout its length to improve the structural strength. The track 1 and the sleeper 3 can be connected by riveting, spot welding, bolting or clamping.

[0057] For example, the construction process of the straight section railway structure in the industrial plant area is as follows:

[0058] (1) After removing the surface miscellaneous fill soil of the wet type roadbed 8, the wet type roadbed 8 is over-excavated to the depth range of the roadbed working area, and backfilled and compacted in layers. The layer thickness is not more than 200 mm. A vibratory roller is used to make the rebound modulus E of the top surface of the roadbed ≥ 40 MPa. The roadbed compaction degree is ≥ 0.95 from 0 cm to 50 cm below the roadbed surface; the roadbed compaction degree is ≥ 0.90 from 50 to 120 cm below the roadbed surface; and the roadbed compaction degree is ≥ 0.90 below 120 cm below the roadbed surface.

[0059] (2) Fill clay to construct the edge-sealing clay portion 7, with a thickness of 60 cm.

[0060] (3) Lay two cloths and one film 6, first lay the mass of 200g / m 2 Polyester staple fiber needle-punched geotextile, followed by 2.00mm thick polyethylene geomembrane, and the final laying mass is 200g / m 2 The geotextile is overlapped by cementation, and the overlap length is 5cm.

[0061] (4) Fill the graded steel slag cushion layer in layers to construct the graded steel slag part 5. The layer thickness is not more than 200 mm, the maximum particle size of the steel slag particles is not more than 37.5 mm, the graded steel slag part 5 CBR ≥ 120, and the compaction degree of the graded steel slag part 5 is ≥ 97%

[0062] (5) Gravel ballast is filled in layers to construct the gravel ballast section 4. The layer thickness shall not exceed 200 mm, the top surface width shall be 3.0 m, the thickness shall be 400 mm, and the specification shall be 20 to 70 mm. The weight of gravel particles larger or smaller than 20 to 70 mm shall not exceed 5% of the total weight. Gravel particles larger than 100 mm shall be removed. Gravel particles shall be kept clean and shall not contain clay blocks and other impurities. The slope failure ratio shall be 1:1.5.

[0063] (6) Lay 3 sleepers with a length of 2.5m, a width of 22cm, and a thickness of 16cm. The number of sleepers is 1920 per kilometer.

[0064] (7) For laying track 1, manganese steel, carbon steel, high silicon copper, copper rail, silicon rail can be used. Track 1 can be selected from Class I and Class II tracks 1. The track gauge can be selected from 1435mm, 900mm, 762mm and 600mm. The length of each section is 12.5m or 25m. The rails and sleepers 3 can be connected by riveting, spot welding, bolting or clamping.

[0065] It should be understood that the terms first, second, etc. are only used to distinguish descriptions and should not be understood as indicating or suggesting relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit without departing from the scope of the exemplary embodiments of the present invention.

[0066] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another relationship between associated objects, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0067] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside" and the like indicate orientations or positional relationships that are customarily placed when the disclosed product is used, or are orientations or positional relationships that are customarily understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation on the present invention.

[0068] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The terms used herein are only used to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates the opposite meaning. It should also be understood that the terms "include", "comprising", "including", and / or "comprising" when used herein specify the existence of the claimed features, integers, steps, operations, units, and / or components, and do not exclude the existence or increase of one or more other features, quantities, steps, operations, units, components, and / or their combinations.

[0070] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, it should be understood by those of ordinary skill in the art that the exemplary embodiments may be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail to avoid making the exemplary embodiments unclear.

[0071] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0072] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field.

Claims

1. An industrial plant straight section railway structure, characterized in that: include: Edge sealing clay part, used for laying on wet type roadbed; Two cloths and one film are laid on the edge-sealing clay part; The graded steel slag portion is laid on the two cloths and one membrane; A crushed stone ballast portion, laid on the graded steel slag portion; sleepers, laid on the crushed stone ballast portion; A buffer plate, laid on the sleeper; A track, laid on the buffer pad; Wherein, the graded steel slag portion is compacted in layers with equal thickness, the thickness of each graded steel slag layer is less than or equal to 20 cm, and the total thickness of the graded steel slag portion is greater than or equal to 100 cm.

2. The straight section railway structure of an industrial plant according to claim 1, characterized in that: The two cloths and one membrane include: Two layers of geotextiles and one layer of geomembrane, wherein the geomembrane is arranged between the two layers of geotextiles; Among them, the geotextile is a geotextile made of composite non-woven fabric; and the geomembrane is a geomembrane made of plastic.

3. The straight section railway structure of an industrial plant according to claim 2, characterized in that: The mass of the geotextile is 80g / m 2 Up to 600g / m 2 ; The thickness of the geomembrane is 1.2 mm to 2.5 mm.

4. The straight section railway structure of an industrial plant according to claim 3, characterized in that: The geotextile is overlapped with the geomembrane by means of viscose, and the overlap length of the geotextile and the geomembrane is greater than or equal to 5 cm; and / or the overlap width of the geomembrane is greater than or equal to 30 cm.

5. The straight section railway structure of an industrial plant according to claim 1, characterized in that: The thickness of the edge-sealing clay portion is 60 cm to 80 cm.

6. The straight section railway structure of an industrial plant according to claim 1, characterized in that: The standard specification range of the crushed stone particles in the crushed stone ballast part is 20mm to 70mm. The weight of the crushed stone particles below the standard specification range is less than or equal to 5% of the total weight of the crushed stone particles; the weight of the crushed stone particles above the standard specification range is less than or equal to 5% of the total weight of the crushed stone particles, and the maximum specification of the crushed stone particles is less than or equal to 100mm.

7. The straight section railway structure of an industrial plant according to claim 6, characterized in that: The width of the graded steel slag portion on each side relative to the crushed stone ballast portion is greater than or equal to 30 cm.

8. The straight section railway structure of an industrial plant according to claim 1, characterized in that: The sleepers are wooden sleepers with a length of 2.5 m, a width of 22 cm, a thickness of 16 cm, and a number of 1920 sleepers per kilometer.

9. The straight section railway structure of an industrial plant according to claim 1, characterized in that: The buffer pad is a plastic pad or a rubber pad, and the thickness of the buffer pad is 5 mm to 10 mm.

10. The straight section railway structure of an industrial plant according to claim 1, characterized in that: The mass of the track is 50 kg / m; The track gauge of the track is one of 1435mm, 900mm, 762mm or 600mm; The length of each section of the track is 12.5m or 25m.

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