Cable trench structure
By setting up layers of crushed stone, fine sand, and precast concrete protective plates in the cable trench, combined with a sloping sidewall design, the problems of easy damage and water accumulation in traditional cable trenches are solved, achieving better protection and drainage performance and extending the service life of cables.
Patent Information
- Application Number
- CN202422857735.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Traditional cable trenches are not robust enough and are easily damaged by external forces. They also tend to accumulate moisture, causing cables to become damp and corroded, which affects the cable's protective performance and service life.
The trench adopts a combination of a bottom layer of crushed stone, a layer of fine sand, and a precast concrete protective slab, combined with a sloping sidewall design, to form a multi-layered composite structure to enhance stability and drainage performance.
It improves the cable's protective performance, reduces external damage, extends the cable's service life, and effectively prevents moisture accumulation, ensuring the cable's normal operation and structural stability.
Smart Images
Figure CN223957262U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to cable installation technical field, concretely relates to a cable trench structure. BACKGROUND
[0002] With the rapid development of electric power, communication and other industries, the laying demand of cable is increasing day by day. In the cable laying engineering, the cable trench is a commonly used laying mode.
[0003] However, the traditional cable trench usually adopts single backfill material, such as soil or gravel, and such structure is not firm enough in practical application, and the cable is easily damaged by external force (such as vehicle rolling), which affects its protection performance for the cable. In addition, the traditional cable trench is easy to accumulate moisture, which causes the cable to be damp and corroded, affecting the performance and service life of the cable. Therefore, it is necessary to provide a cable trench structure to improve the protection performance, drainage effect and overall stability of the cable. SUMMARY
[0004] In order to overcome the problem that the traditional cable trench in the background art usually adopts single backfill material, such as soil or gravel, and such structure is not firm enough in practical application, and the cable is easily damaged by external force (such as vehicle rolling), which affects its protection performance for the cable, and in addition, the traditional cable trench is easy to accumulate moisture, which causes the cable to be damp and corroded, affecting the performance and service life of the cable, the utility model provides a cable trench structure; can bear greater external force and load, effectively reduces the influence of ground subsidence on the cable, has strong reliability, can provide better protection for the cable, effectively reduces the damage of external force to the cable, thereby prolongs the service life of the cable, at the same time, helps to improve the drainage performance of the cable trench, prevents moisture accumulation, reduces the risk of cable damp, thereby ensures the normal operation of the cable.
[0005] To achieve the above purpose, the utility model is realized through the following technical schemes: a cable trench structure mainly includes groove, prefabricated concrete protection plate, gravel layer, first fine sand layer, second fine sand layer, plain soil layer, lime soil layer and gravel layer, the bottom of the groove is paved with the gravel layer, the first fine sand layer for filling the gap between the stone blocks is paved on the gravel layer, two cables with a distance of 100mm are laid in parallel on the first fine sand layer, the second fine sand layer is covered on the cables, the plain soil layer, the lime soil layer and the gravel layer are sequentially paved on the second fine sand layer, and a plurality of prefabricated concrete protection plates are covered along the axial direction of the cable between the second fine sand layer and the plain soil layer.
[0006] The bottom of the groove is horizontally arranged, the side wall is arranged as an inclined surface, and the included angle between the side wall of the groove and the vertical direction is 10°-45°.
[0007] The stone block particle size of the gravel layer is 50-100mm.
[0008] The fine sand of the first fine sand layer and the second fine sand layer has a particle size of 0.5-2mm.
[0009] The prefabricated concrete protection plate has a thickness of 60-100mm.
[0010] The cable trench structure has the advantages that:
[0011] The cable trench structure has the advantages that: The gravel layer and the fine sand layer are arranged to improve the drainage performance of the cable trench, prevent moisture accumulation, reduce the risk of cable dampening, and thus ensure normal operation of the cable. The gravel layer at the bottom of the trench, the plain soil layer, the lime-soil layer and the gravel layer at the upper part are matched with each other, the stability of the cable trench structure is improved, the cable trench can bear greater external force and load, the influence of ground subsidence on the cable is effectively reduced, and the cable trench structure has high reliability. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a structural schematic view of the cable trench structure. DETAILED DESCRIPTION
[0013] In order to make the purpose, technical scheme and beneficial effects of the cable trench structure clearer, the preferred embodiments of the cable trench structure will be described in detail below with reference to the drawings, so as to facilitate understanding of the cable trench structure by the skilled in the art.
[0014] The cable trench structure comprises a trench 1, prefabricated concrete protection plates 2, a gravel layer 3, a first fine sand layer 4, a second fine sand layer 5, a plain soil layer 6, a lime-soil layer 7 and a gravel layer 8.
[0015] When excavating the cable trench, the slope is set according to the type of soil or the retaining plate is used for support, when the trench 1 is excavated to the appropriate depth, the soil layer at the bottom of the trench 1 is leveled and rammed, then a 100mm thick gravel layer 3 is laid, then a 100mm thick fine sand is laid on the gravel layer 3, after the fine sand is rammed, the cable 9 is laid, the cable 9 laid must be kept straight, and the aluminum plate is tied on the cable 9 every 10 meters with an insulating tape to ensure the distinguishability of each loop cable, then the 200mm thick fine sand is continued to cover on the cable 9, and the prefabricated concrete protection plate 2 is covered along the whole length of the cable 9, and the soil layer 5, the lime soil layer 6 and the sand and stone layer 7 are backfilled in turn above the prefabricated concrete protection plate 2, finally, the original road surface is repaired; the materials of each layer should be laid uniformly and densely, and appropriate compaction is carried out, so as to ensure the quality and performance of the cable trench; the gravel layer, the fine sand layer and the prefabricated concrete protection plate arranged around the cable can provide better protection for the cable, effectively reduce the damage of external force to the cable, and prolong the service life of the cable; the setting of the gravel layer and the fine sand layer helps to improve the drainage performance of the cable trench, prevents water accumulation, reduces the risk of cable damp, and thus ensures the normal operation of the cable; the gravel layer at the bottom of the trench and the soil layer, the lime soil layer and the sand and stone layer above cooperate with each other, increase the stability of the cable trench structure, can bear greater external force and load, effectively reduce the influence of ground subsidence on the cable, and have strong reliability.
[0016] The bottom of the trench 1 is horizontally arranged, the side wall is arranged as an inclined surface, and the included angle between the side wall of the trench 1 and the vertical direction is 10°-45°; the inclined surface side wall structure can increase the stability of the trench 1, compared with the vertical side wall structure, the inclined surface side wall structure can better resist the lateral pressure of the soil, and reduce the risk of collapse of the trench 1.
[0017] The stone particle size of the gravel layer 3 is 50-100mm; the fine sand particle size of the first fine sand layer 4 and the second fine sand layer 5 is 0.5-2mm; the fine sand can fill the gap between the gravel, provide more uniform support and buffer, can reduce the movement and settlement of the gravel block, and thus improve the stability of the whole structure.
[0018] The thickness of the prefabricated concrete protection plate 2 is 60-100mm; the prefabricated concrete protection plate 2 can provide additional mechanical strength and protection.
[0019] Working process:
[0020] When excavating the cable trench, the slope is set according to the type of soil or the retaining plate is used for support, when the trench 1 is excavated to the appropriate depth, the soil layer at the bottom of the trench 1 is leveled and rammed, then the gravel layer 3 with a thickness of 100mm is laid, then the fine sand with a thickness of 100mm is laid on the gravel layer 3, after the fine sand is rammed, the cable 9 is laid, the laid cable 9 must be kept straight, and the aluminum plate is tied on the cable 9 every 10 meters with the insulating tape, the distinguishability of each loop cable is ensured, then the 200mm thick fine sand is continued to cover on the cable 9, the prefabricated concrete protection plate 2 is covered along the whole length of the cable 9, and the soil layer 5, the lime soil layer 6 and the sand and stone layer 7 are backfilled in sequence above the prefabricated concrete protection plate 2, finally, the original road surface is repaired, the materials of each layer should be laid uniformly and densely, and appropriate compaction is carried out, so as to ensure the quality and performance of the cable trench; the gravel layer, the fine sand layer and the prefabricated concrete protection plate are arranged around the cable, the cable can be better protected, the damage of external force to the cable is effectively reduced, and the service life of the cable is prolonged; the setting of the gravel layer and the fine sand layer helps to improve the drainage performance of the cable trench, prevents water accumulation, reduces the risk of cable damp, and ensures the normal operation of the cable; the gravel layer at the bottom of the trench and the soil layer, the lime soil layer and the sand and stone layer at the upper part cooperate with each other, the stability of the cable trench structure is increased, the cable can withstand greater external force and load, the influence of ground subsidence on the cable is effectively reduced, and the cable has strong reliability.
[0021] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the range defined by the claims of the utility model.
Claims
1. A cable trench structure, characterized by: The cable trench structure comprises a trench (1), a prefabricated concrete protection plate (2), a gravel layer (3), a first fine sand layer (4), a second fine sand layer (5), a plain soil layer (6), a lime-soil layer (7) and a sandstone layer (8), the bottom of the trench (1) is paved with the gravel layer (3), the gravel layer (3) is paved with the first fine sand layer (4) for filling the gaps between the stones, two cables with a distance of 100mm are laid on the first fine sand layer (4) in parallel, the cables are covered with the second fine sand layer (5), the plain soil layer (6), the lime-soil layer (7) and the sandstone layer (8) are sequentially laid on the second fine sand layer (5), and a plurality of groups of prefabricated concrete protection plates (2) are covered on the second fine sand layer (5) and the plain soil layer (6) along the axial direction of the cables.
2. A cable trough structure as claimed in claim 1, characterized in that: The bottom of the trench (1) is horizontally arranged, the side wall is arranged as an inclined surface, and the included angle between the side wall of the trench (1) and the vertical direction is 10°-45°.
3. A cable duct structure according to claim 1 or 2, c h a r a c t e r i s e d in that The stone particle size of the gravel layer (3) is 50-100mm.
4. A cable trough structure according to claim 3, characterised in that The fine sand particle size of the first fine sand layer (4) and the second fine sand layer (5) is 0.5-2mm.
5. A cable duct structure as claimed in claim 1 or 2, characterised in that: The thickness of the prefabricated concrete protection plate (2) is 60-100mm.