Cable trench device and arrangement method thereof

Abstract

The present invention discloses a cable trench device and its arrangement method, comprising: a cable trench main body, a drainage device, a support rod and a cable laying frame, wherein the side wall of the cable trench main body is provided with a first drainage channel; the drainage device is arranged on the top surface of the cable trench main body, and the drainage device comprises, from top to bottom, an anti-seepage porous plate, a granular aggregate layer and a reinforced bearing layer, and the drainage device is provided with a first drainage hole; the support rod is arranged inside the cable trench main body, and the two ends of the support rod are respectively fixed to the two opposite inner side walls of the cable trench main body; the cable laying frame is arranged inside the cable trench main body, and the top end of the cable laying frame is connected to the middle part of the support rod by a ball joint. The device of the present application reduces the possibility of accumulated water in the overlying soft soil seeping into the interior of the cable trench, and can also achieve the effect of vibration reduction and load resistance. The cable laying frame can always remain vertical by its own gravity, thereby ensuring that the cable is always in a horizontal position, eliminating the possibility of the cable overturning.

Description

Technical Field

[0001] The present invention relates to the technical field of cable trenches, and in particular to a cable trench device and an arrangement method thereof. Background Art

[0002] Urban power grid construction has shifted from overhead lines to cable laying in underground transmission structures such as cable trenches. Due to the geological conditions in the deep, soft soil areas of the southeastern coastal region, which typically exhibit "high groundwater levels, high soil moisture content, high compressibility, low strength, high sensitivity, and low permeability," existing shallow cable trenches crossing urban arterial roads, and even the cables within them, are highly susceptible to damage under the transient effects of urban traffic loads, especially extreme traffic loads from large transport trucks and cement mixers. The main reasons are as follows:

[0003] 1. Due to the high moisture content of the soft soil overlying the cable trench, water seepage is prone to occur inside the cable trench and water accumulation forms in the trench. Long-term immersion of cables in water can easily cause cable insulation failure, leading to power grid accidents and seriously affecting the safe operation of the power grid.

[0004] 2. Under the instantaneous action of extreme traffic loads, the existing cable trench has weak vibration damping capacity and is prone to brittle fracture, thus affecting the overall structure of the cable trench;

[0005] 3. Under the long-term cyclic effects of extreme traffic loads, the excess pore water pressure in the soil surrounding the underground recycled concrete transmission structure increases, the effective stress decreases, the modulus softens, and residual strain is generated. This leads to significant additional settlement of the soil surrounding the structure, which in turn causes uneven settlement of the cable trench, especially lateral overturning. This process may not damage the overall structure of the cable trench, but because traditional cable laying racks are fixed to the side walls of the cable trench, overturning the cable trench will cause the cable laying racks to overturn, causing the cables inside to overturn and dislocate, and even causing a large number of cables to be damaged.

[0006] 4. Soft soil has a low deformation modulus and a long deformation time. On the one hand, when bearing the overlying load, the surrounding soft soil will squeeze the side walls of the cable trench. On the other hand, the traditional cable laying frame is fixed to the side wall of the cable trench, which affects the integrity of the cable trench side wall. In addition, the deadweight of the cable laying frame and the cables further increases the burden on the cable trench side wall to resist lateral loads. Therefore, the side walls of the cable trench in soft soil areas are greatly deformed and easily damaged.

[0007] In summary, there is an urgent need for a cable trench device that is highly waterproof, has anti-overturning capabilities, and can withstand extreme traffic loads. Summary of the Invention

[0008] The first technical problem to be solved by the present invention is to provide a cable trench device with anti-overturning capability and capable of withstanding extreme traffic loads in response to the above-mentioned prior art.

[0009] The second technical problem to be solved by the present invention is to provide a method for arranging the above-mentioned cable trench device.

[0010] The technical solution adopted by the present invention to solve the first technical problem is: a cable trench device, characterized in that it includes:

[0011] A cable trench body, wherein a first drainage channel is provided on a side wall of the cable trench body;

[0012] A drainage device is provided on the top surface of the cable trench body, and the drainage device includes, from top to bottom, an anti-seepage porous plate, a granular aggregate layer, and a reinforced bearing layer. The drainage device is provided with a first drainage hole, which is connected to the first drainage channel;

[0013] A support rod is arranged inside the cable trench body, and both ends of the support rod are fixed to two opposite inner side walls of the cable trench body;

[0014] The cable laying frame is arranged inside the cable trench body. The top end of the cable laying frame is connected to the middle part of the support rod by a ball joint. The cable laying frame is used to carry cables.

[0015] Improved, in the cable trench device, the drainage device further comprises a flexible filter layer, and the flexible filter layer is arranged inside the anti-seepage porous plate.

[0016] As a further improvement, in the cable trench device, the granular aggregate layer includes granular matter, and the particle size of the granular matter is larger than the aperture of the first drainage hole.

[0017] As an improvement, in the cable trench device, a second drainage hole is provided at the bottom of the cable trench body, and the second drainage hole is used to allow the accumulated water inside the cable trench body to flow out.

[0018] Further improvement, in the cable trench device, the support rod includes two support parts, the two support parts are arranged opposite to each other, one end of one of the support parts is arranged obliquely on the side wall of the cable trench body, and one end of the other support part is arranged obliquely on the side wall of the cable trench body, and the connection between the two support parts is connected to the cable laying frame ball joint.

[0019] As a further improvement, in the cable trench device, the supporting portion includes a middle portion and a connecting portion, an end of the connecting portion away from the middle portion is connected to the side wall of the cable trench body, and the cross-sectional area of the connecting portion gradually increases from the end connected to the middle portion to the end away from the middle portion.

[0020] Improved, in the cable trench device, the cable laying frame includes vertical poles and cross poles, the top ends of the vertical poles are connected to the support poles by ball joints, the vertical poles are vertically arranged, and the cross poles are perpendicular to the vertical poles.

[0021] Optionally, in the cable trench device, there are multiple cross bars, and the multiple cross bars are arranged at intervals along the length direction of the vertical poles.

[0022] Further improvement, in the cable trench device, the cable trench main body includes a top part and a bottom part, the top part is located above the bottom part, the drainage device is arranged on the top surface of the top part, and the cross-sectional area of the bottom part gradually increases from the end connected to the top part to the end away from the top part.

[0023] The technical solution adopted by the present invention to solve the second technical problem is: a method for arranging a cable trench device, including any one of the cable trench devices described above, characterized in that the method for arranging the cable trench device comprises the following steps:

[0024] Step 1: During the construction process, a trench is excavated, a drainage channel with a certain slope is assembled at the bottom of the trench, and the cable trench body is installed on the upper part of the drainage channel; wherein the cable laying frame has been installed inside the cable trench body;

[0025] Step 2: laying cables on the cable laying frame and covering the drainage device;

[0026] Step 3: laying a gravel layer or a granular layer on the upper part of the drainage device;

[0027] Step 4: Backfill the soft soil layer and the construction is completed.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] First, the cable trench device in the invention is provided with a drainage device on the top surface of the cable trench main body. The drainage device includes an anti-seepage porous plate, a granular aggregate layer and a reinforced bearing layer from top to bottom. The anti-seepage porous plate can reduce the accumulation of water in the overlying soft soil from penetrating into the interior of the cable trench main body. The structural design of the porous plate can effectively block the penetration of water while ensuring the discharge of accumulated water. The granular aggregate layer has good water permeability and can guide the accumulated water to flow into the first drainage hole. The reinforced bearing layer effectively increases the strength of the top surface of the cable trench main body, can disperse the pressure from the overlying soft soil, and under the action of extreme traffic loads, reduce the direct impact of external loads on the cable trench main body. At the same time, the granular aggregate layer can provide a certain buffer for the reinforced bearing layer and reduce the direct pressure of external loads on the cable trench main body. Therefore, the cable trench device applied for in the present invention can enable a large amount of accumulated water generated by the compressive deformation of the overlying soft soil to be directly discharged along the first drainage hole and the first drainage channel by providing a layered structure with an anti-seepage porous plate and a granular aggregate layer, fundamentally reducing the possibility of accumulated water in the overlying soft soil seeping into the cable trench. The anti-seepage porous plate and the granular aggregate layer also have vibration reduction capabilities, which can prevent the main body of the cable trench from being cracked and damaged due to instantaneous extreme loads, and the reinforced bearing layer can also effectively resist external loads, achieving the effect of vibration reduction and load resistance.

[0030] Secondly, the cable trench device of the invention is also provided with a support rod that is fixedly attached to the inner side wall of the cable trench body at an angle, and the cable laying frame is connected to the middle part of the support rod by a ball hinge, thereby converting the deadweight of the support rod, the cable laying frame, and the cable into pressure applied to the side wall of the cable trench body, and jointly resisting the lateral load of the external soil with the side wall of the cable trench body. The cross-sectional area of the connection portion gradually increases from the end close to the middle part to the end away from the middle part, making the pressure applied to the inner side wall of the cable trench body more uniform, thereby improving the integrity of the entire lateral load bearing system. The top end of the cable laying frame is connected to the support rod by a ball hinge, and the cable laying frame can always remain vertical by its own weight, thereby ensuring that the cable is always in a horizontal position, thereby eliminating the possibility of the cable overturning. Even if the cable trench body overturns, the stable arrangement of the cable can still be guaranteed, and the cable can be stably protected, and the cables inside the cable trench body can be prevented from overturning or even being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0032] Figure 1Schematic diagram of the structure of the cable trench device in an embodiment of the present invention;

[0033] Figure 2 Schematic diagram of the structure of the drainage device in an embodiment of the present invention;

[0034] Figure 3 Schematic diagram of the structure of the cable laying frame in an embodiment of the present invention.

[0035] 1. Cable trench body; 11. First drainage channel; 12. Second drainage hole; 13. Top part; 14. Bottom part; 2. Drainage device; 21. Anti-seepage porous plate; 22. Granular aggregate layer; 23. Reinforced bearing layer; 24. First drainage hole; 25. Flexible filter layer; 3. Cable laying frame; 31. Vertical pole; 32. Horizontal pole; 4. Support pole; 41. Support part; 42. Middle part; 43. Connecting part.

[0036] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] refer to Figure 1 and Figure 2 This embodiment provides a cable trench device, which includes a cable trench main body 1, a drainage device 2 and a cable laying frame 3. The side wall of the cable trench main body 1 is provided with a first drainage channel 11; the drainage device 2 is covered on the top surface of the cable trench main body 1, and the drainage device 2 includes an anti-seepage porous plate 21, a granular aggregate layer 22 and a reinforced bearing layer 23 from top to bottom. The bottom of the granular aggregate layer 22 is provided with a first drainage hole 24, and the first drainage hole 24 is connected to the first drainage channel 11; the cable trench main body 1 is an internal hollow structure, and the cable laying frame 3 is arranged inside the cable trench main body 1, and the cable laying frame 3 is used to carry cables.

[0041] The cable trench device provided in this embodiment is provided with a drainage device 2 on the top surface of the cable trench main body 1. The drainage device 2 includes an anti-seepage porous plate 21, a granular aggregate layer 22 and a reinforced bearing layer 23 from top to bottom. The anti-seepage porous plate 21 can reduce the infiltration of accumulated water from the overlying soft soil into the interior of the cable trench main body 1. The structural design of the porous plate can effectively block the penetration of water while ensuring the discharge of accumulated water; the granular aggregate layer 22 has good water permeability and can guide the accumulated water to flow into the first drainage hole 24; the reinforced bearing layer 23 effectively increases the strength of the top surface of the cable trench main body 1, can disperse the pressure from the overlying soft soil, and under the action of extreme traffic loads, reduce the direct impact of external loads on the cable trench main body 1; at the same time, the granular aggregate layer 22 can provide a certain buffer for the reinforced bearing layer 23 and reduce the direct pressure of external loads on the cable trench main body 1. Therefore, the cable trench device of this embodiment is provided with a layered structure of an impermeable porous plate 21 and a granular aggregate layer 22, so that a large amount of accumulated water generated by the compressive deformation of the overlying soft soil can be directly discharged along the first drainage hole 24 and the first drainage channel 11, fundamentally reducing the possibility of accumulated water in the overlying soft soil seeping into the cable trench; the impermeable porous plate 21 and the granular aggregate layer 22 also have vibration reduction capabilities, which can prevent the cable trench body 1 from cracking and damage due to instantaneous extreme loads, and the reinforced bearing layer 23 can also effectively resist external loads, achieving the effect of vibration reduction and load resistance.

[0042] In this embodiment, first drainage holes 24 are formed at the bottoms of two opposite side walls of the granular aggregate layer 22 , and first drainage channels 11 are formed at two opposite side walls of the cable trench body 1 .

[0043] Specifically, the anti-seepage porous plate 21 is made of a high-ductility material, which can not only filter water but also reduce vibration. The anti-seepage porous plate 21 is specifically made of a flexible concrete porous plate or a rubber mesh material.

[0044] Specifically, the cross-sectional dimensions of the anti-seepage porous plate 21, the granular aggregate layer 22 and the reinforced bearing layer 23 are all the same, and the cross-sectional dimension of the reinforced bearing layer 23 is larger than the dimension of the top opening of the cable trench main body 1, so that the reinforced bearing layer 23 can completely cover the top opening of the cable trench main body 1.

[0045] Specifically, the reinforced bearing layer 23 is a reinforced concrete layer, which can effectively resist the overlying load.

[0046] Specifically, the cable trench body 1 is an assembled component, and the cable trench body 1 can be prefabricated in different lengths in the factory. Each section of the cable trench body 1 can have a variety of connection methods, such as snap-in block connection, cast-in-place cement connection, setting connecting iron sheet welding, etc.

[0047] refer to Figure 2 The drainage device 2 further includes a flexible filter layer 25 , which is horizontally arranged inside the anti-seepage porous plate 21 .

[0048] Specifically, the flexible filter layer 25 is made of a polymer material, specifically high-density polyethylene, polyvinyl chloride, etc. The flexible filter layer 25 has good water permeability and can effectively prevent soil particles from penetrating, thereby preventing soil particles from clogging the anti-seepage porous plate 21 and the granular aggregate layer 22.

[0049] Furthermore, the cross-sectional dimension of the flexible filter layer 25 is the same as that of the anti-seepage porous plate 21 , so that the flexible filter layer 25 can cover the entire cross-sectional dimension of the anti-seepage porous plate 21 , thereby reducing the risk of the anti-seepage porous plate 21 being blocked.

[0050] refer to Figure 2 The granular aggregate layer 22 includes granular materials, and the particle size of the granular materials is larger than the aperture of the first drainage hole 24 .

[0051] Specifically, the granular aggregate layer 22 includes particles of various sizes, and the minimum particle size of the particles is larger than the aperture of the first drainage hole 24, thereby preventing the particles from being impacted by water and flowing into the first drainage hole 24, thereby blocking the first drainage hole 24.

[0052] Specifically, the granular material is gravel or artificial granular material, and artificial granular material such as unfired ceramsite can not only achieve the effect of efficient vibration reduction, but also effectively resist the external load on the upper part.

[0053] Since the granular aggregate layer 22 is in an unsaturated state for a long time, the matrix suction mainly based on the capillary water force can further improve the bearing capacity of the granular aggregate layer 22 .

[0054] refer to Figure 1 A second drainage hole 12 is provided at the bottom of the cable trench body 1 , and the second drainage hole 12 is used for allowing the accumulated water inside the cable trench body 1 to flow out.

[0055] Specifically, a second drainage channel is opened at the bottom of the cable trench main body 1, and the second drainage channel is connected to the second drainage hole 12. Once water seepage occurs inside the cable trench main body 1, the accumulated water that has seeped into the cable trench can be quickly discharged to the outside of the cable trench main body 1, keeping the inside of the cable trench main body 1 dry.

[0056] Specifically, a drainage channel is provided below the bottom of the cable trench body 1. The drainage channel is provided at a certain inclination, so that water flowing out from the second drainage hole 12 and the first drainage channel 11 at the bottom of the cable trench body 1 can be quickly discharged to avoid accumulation at the bottom of the cable trench body 1.

[0057] Furthermore, the drainage channel can have various shapes and can be installed by either cast-in-place or prefabricated method.

[0058] Correspondingly, the bottom end of the first drainage channel 11 is tilted toward the second drainage hole 12 so that water output from the first drainage channel 11 and the second drainage hole 12 can converge and flow into the drainage channel.

[0059] refer to Figure 1 The device of the present application also includes a support rod 4, which is disposed within the cable trench body 1. The ends of the support rod 4 are respectively fixed to the opposite inner side walls of the cable trench body 1. The top of the cable laying frame 3 is connected to the middle of the support rod 4 by a ball joint. Specifically, the cable laying frame 3 of the present application is a suspended cable laying frame.

[0060] The support rod 4 includes two supporting portions 41, which are arranged opposite each other. One end of one supporting portion 41 is tilted relative to the side wall of the cable trench body 1, while the other end of the other supporting portion 41 is tilted relative to the side wall of the cable trench body 1. The connection between the two supporting portions 41 is connected to the cable laying frame 3 by a ball joint. The supporting portions 41 are tilted relative to the side wall of the cable trench body 1. By decomposing the supporting force into vertical and horizontal forces, the tilted arrangement can better adapt to changes in lateral pressure in the soil, avoid localized excessive stress, and thus reduce lateral displacement or settlement of the soil.

[0061] Specifically, the support rod 4 is integrally formed, with two support portions 41 disposed symmetrically. By securing the two support portions 41 to opposite inner sidewalls of the cable trench body 1 and connecting the top of the cable laying frame 3 to the two support portions 41 with a ball joint, the weight of the cable laying frame 3 is transferred to the inner sidewall of the cable trench body 1, converted into outward pressure to resist the lateral pressure of the soil on the outer sidewall of the cable trench body 1.

[0062] refer to Figure 1The supporting portion 41 includes a middle portion 42 and a connecting portion 43. The end of the connecting portion 43 away from the middle portion 42 is connected to the side wall of the cable trench body 1. The cross-sectional area of the connecting portion 43 gradually increases from the end connected to the middle portion 42 to the end away from the middle portion 42. The middle portion 42 of one supporting portion 41 is connected to the middle portion 42 of another supporting portion 41.

[0063] The connecting portion 43 will be subjected to greater lateral pressure or external load at the end close to the cable trench body 1. By designing the cross-sectional area of the connecting portion 43 to gradually increase from the end connected to the middle portion 42 to the end away from the middle portion 42, the increased cross-sectional area can effectively increase the strength of the portion of the connecting portion 43 close to the cable trench body 1, thereby helping the support rod 4 to withstand greater external forces and avoid local damage or instability.

[0064] In this embodiment, the middle portion 42 is cylindrical, and the connecting portion 43 is truncated cone-shaped.

[0065] refer to Figure 3 The cable laying frame 3 includes a vertical rod 31 and a horizontal rod 32. The top of the vertical rod 31 is connected to the support rod 4 by a ball joint. The vertical rod 31 is set vertically, and the horizontal rod 32 is perpendicular to the vertical rod 31. The cable is placed horizontally on the horizontal rod 32. There are multiple horizontal rods 32, and the multiple horizontal rods 32 are arranged at intervals along the length direction of the vertical rod 31.

[0066] Specifically, the vertical rod 31 is located in the middle of the horizontal rod 32, which can improve stability and evenly distribute the load.

[0067] refer to Figure 1 The cable trench body 1 includes a top portion 13 and a bottom portion 14. The top portion 13 is located above the bottom portion 14, and the drainage device 2 is provided on the top surface of the top portion 13. The cross-sectional area of the bottom portion 14 gradually increases from the end connected to the top portion 13 to the end away from the top portion 13. This arrangement can significantly improve the lateral overturning resistance of the cable trench body 1.

[0068] Specifically, the cross section of the top portion 13 is rectangular, the cross section of the bottom portion 14 is trapezoidal, and the top portion 13 and the bottom portion 14 are integrally provided.

[0069] Specifically, the drainage device 2, cable laying frame 3 and support rod 4 are all assembled components, which have controllable product quality and are easy and quick to install. All components of this device can be mass-produced, and the assembled cable trench can significantly improve construction efficiency.

[0070] The present application designs a support rod 4 that is fixedly attached to the inner wall of the cable trench body 1 at an angle, and the cable laying frame 3 is connected to the middle part of the support rod 4 by a ball hinge. This converts the deadweight of the support rod 4, the cable laying frame 3, and the cables into pressure applied to the side wall of the cable trench body 1, and together with the side wall of the cable trench body 1, resists the lateral load of the external soil. The cross-sectional area of the connecting portion 43 gradually increases from the end close to the middle portion 42 to the end away from the middle portion 42, making the pressure applied to the inner wall of the cable trench body 1 more uniform and improving the integrity of the entire lateral load bearing system. The top end of the cable laying frame 3 is connected to the support rod 4 by a ball hinge. The cable laying frame 3 can always remain vertical by its own weight, thereby ensuring that the cable is always in a horizontal position, thereby eliminating the possibility of the cable overturning. Even if the cable trench body 1 overturns, the cable can still be arranged stably and the cable can be stably protected, preventing the cables inside the cable trench body 1 from overturning or even being damaged.

[0071] The present application also provides a method for arranging a cable trench device, comprising the following steps:

[0072] During the construction process, a trench is excavated, a sloped drainage channel is assembled at the bottom of the trench, and the cable trench body 1 is installed above the drainage channel. A cable laying frame 3 is already installed inside the cable trench body 1. Each section of the cable trench body 1 is 1.0 meter long and connected by snap-on blocks. After assembly is complete, waterproof strips are laid at each connection between the cable trench bodies 1. Once all is completed, the cables are laid on the cable laying frame 3, covered with a drainage device 2, and sealed at the connection. Then, a 0.3-meter layer of gravel (or coarse particles such as unburned ceramsite) is laid on top of the drainage device 2. Finally, a soft soil layer is backfilled to complete the construction.

[0073] After the cable trench device is installed, a layer of gravel (or coarse particles such as unburned expanded clay) is laid on the upper part of the drainage device 2 to form a drainage layer, thereby avoiding long-term water accumulation on the upper part of the cable trench device. At the same time, it can also provide a certain buffer for the cable trench device and reduce the pressure of external loads on the cable trench device.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, within the scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. Cable trench device, characterized in that, include: A cable trench body, wherein a first drainage channel is provided on a side wall of the cable trench body; The drainage device is arranged on the top surface of the cable trench body, and the drainage device includes an anti-seepage porous plate, The granular aggregate layer and the reinforced bearing layer, the drainage device is provided with a first drainage hole, the first drainage hole is connected to the first drainage channel Pass; The support rod is arranged inside the cable trench body, and the two ends of the support rod are respectively fixed to the opposite ends of the cable trench body. On both inner walls; The cable laying frame is set inside the main body of the cable trench. The top of the cable laying frame is connected to the middle of the support rod by a ball joint. Connection, cable laying rack is used to carry cables; The support rod includes two supporting parts, which are arranged opposite to each other; one end of one of the supporting parts is inclined The support portion is obliquely arranged on the side wall of the cable trench body, and one end of the other support portion is obliquely arranged on the cable trench body. The side wall of the two support parts is connected to the cable laying frame at a ball hinge; The supporting portion includes a middle portion and a connecting portion, and one end of the connecting portion away from the middle portion is connected to the cable groove. The side wall of the main body is connected, and the cross-sectional area of the connecting portion is from one end connected to the middle portion to the end away from the middle portion. One end gradually increases.

2. The cable trench device according to claim 1, characterized in that: The drainage device further comprises a flexible filter layer, The flexible filter layer is arranged inside the anti-seepage porous plate.

3. The cable trench device according to claim 1, characterized in that: The granular aggregate layer includes granular matter, The particle size of the particulate matter is larger than the aperture of the first drainage hole.

4. The cable trench device according to claim 1, characterized in that: The bottom of the cable trench body is provided with The second drainage hole is used to allow the accumulated water inside the cable trench body to flow out.

5. The cable trench device according to claim 1, characterized in that: The cable laying frame includes vertical poles and horizontal poles The top of the vertical rod is connected to the support rod by a ball joint, the vertical rod is vertically arranged, and the cross bar is perpendicular to the Vertical pole.

6. The cable trench device according to claim 5, characterized in that: The number of the crossbars is multiple, multiple The cross bars are arranged at intervals along the length direction of the vertical bars.

7. A method for arranging a cable trench device, comprising the cable trench device according to any one of claims 1 to 6, wherein The cable trench arrangement method includes the following steps: Step 1: During the construction process, dig a trench and assemble a drainage channel with a certain slope at the bottom of the trench. The cable trench body is installed on the upper part of the drainage ditch; wherein, The cable has been installed inside the cable trench body laying rack; Step 2: laying cables on the cable laying frame and covering the drainage device; Step 3: laying a gravel layer or a granular layer on the upper part of the drainage device; Step 4: Backfill the soft soil layer and the construction is completed.

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