Shallow pipe trench modular structure for cold climates

Abstract

This invention provides a modular, modular structure for shallow pipe trenches that can meet the construction needs for shallow pipe trenches in cold regions. [Solution] The modular structure for shallow pipe trenches in cold regions includes a bottom load-bearing layer, a middle pipe laying layer, and a top road surface load layer. The inside of the pipe trench is divided into a first filling space and a second filling space from top to bottom. The first and second filling spaces are separated by a horizontally arranged first lateral insulation plate. The top road surface load layer is filled in the first filling space, the bottom load-bearing layer and the middle pipe laying layer are filled in the second filling space, the bottom load-bearing layer is filled by a plurality of first filling modules, and the middle pipe laying layer is filled by pipes and a plurality of second filling modules. Both the first and second filling modules include a housing, and the housing is filled with graded gravel. This invention provides high heat retention and reduces the probability of frostbite in shallow pipe trenches.

Description

Technical Field

[0001] This application belongs to the technical field of ground trench construction, and specifically relates to a shallow trench assembled modular structure for cold regions.

Background Art

[0002] Shallow ground trenches are an important part of the renovation and upgrading of old residential areas and urban pipe networks, and are important technical measures for urban renewal. Even in historical and cultural heritage areas, it is necessary to lay equipment pipes. Affected by the complex underground conditions and cultural heritage, generally, there are no conditions for constructing deep trenches. However, for shallow ground trenches in severe cold climates, whether they are located above or below the frozen soil layer, they often freeze and get frost damage, and must be inspected constantly.

[0003] However, the surface layer of the pipe trench needs to meet the requirements of vehicle traffic and often requires ribs. As a result, the entire surface layer is often destroyed during inspection, and repair requires refilling and driving in ribs, wasting resources, time, and labor. Moreover, after driving in the ribs, templates are embedded, making dismantling difficult. Furthermore, if concrete or graded gravel is used as backfill material around the pipe trench, the ground load capacity requirements can be met, but inspection labor is high and building materials are wasted. If coarse sand or sand of medium roughness is used for backfilling, a certain level of heat retention can be obtained, but the load capacity is insufficient, and a concrete gradient adjustment layer is still required on top of the coarse or medium roughness sand. The interface between the two materials presents significant problems, mainly as follows. From a construction standpoint, the concrete slope adjustment layer requires consolidation. However, if the unhardened concrete in the slope adjustment layer is not compacted, it can press down on the piping layer downwards, potentially causing damage to the pipes. Furthermore, while water supply, drainage, heat, and gas pipes are self-compacting, and concrete seeping in from the slope adjustment layer does not affect these self-compacting pipes, tray-type piping is not sealed. If concrete seeps in, the pipes inside the trays will be damaged, posing a safety risk. Therefore, tray-type piping cannot be laid under such a construction process. In addition, because the concrete seeps in and seals the gravel, leaks become difficult to detect, or it becomes difficult to accurately locate the specific location of a leak, making inspection inconvenient. Even if the leak location is found, it is necessary to dismantle long segments of hardened concrete, making construction difficult, and dismantling after construction is difficult, further increasing material waste and structural complexity. Furthermore, in conventional pipe trench construction, no sealing measures are provided between multiple pipes. If a leak occurs in a corrosive pipe, the leaked liquid has a certain degree of erosive effect on the inner wall of the trench. The freeze-thaw cycle in winter further amplifies this destructive effect, reducing the durability of the trench.

[0004] Based on the above analysis, the conventional pipe trench construction process lacks overall coherence. Insulation, waterproofing, load-bearing, and backfilling cannot form a unified system. The roles played by each structural layer are independent of each other, resulting in mutually detrimental effects, which is disadvantageous for durability and inspection, and thus cannot meet the demand for shallow pipe trench construction in cold regions. [Overview of the project] [Problems that the invention aims to solve]

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a modular modular structure for shallow pipe trenches in cold regions in order to solve the problem that conventional pipe trench construction processes cannot meet the demand for construction of shallow pipe trenches in cold regions. [Means for solving the problem]

[0006] The objective of the present invention is achieved as follows.

[0007] A shallow pipe trench modular structure for cold regions, comprising a bottom load-bearing layer, a middle pipe laying layer, and a top road surface load layer, which are arranged sequentially from bottom to top within the pipe trench. The inside of the pipe groove is divided into a first filling space and a second filling space from top to bottom, and the first filling space and the second filling space are separated by a first horizontal insulation plate arranged horizontally. The top road surface load layer is filled within the first filling space, and the bottom load-bearing layer and the middle pipe laying layer are filled within the second filling space. The bottom load-bearing layer is filled with a plurality of first filling modules, and the middle pipe laying layer is filled with pipes and a plurality of second filling modules. The first and second filling modules each include a housing, and the housing is filled with graded gravel. Furthermore, vertical insulation boards are laid on the vertical sides of the pipe groove, and a second horizontal insulation board is laid on the bottom surface of the pipe groove, and the first horizontal insulation board, the second horizontal insulation board and the vertical insulation board surround the second filled space which is relatively closed. Furthermore, there is a stepped surface within the pipe groove, and the plane on which the stepped surface is located is the partition surface between the first and second filling spaces, both ends of the first lateral insulation plate overlap the stepped surface, and the top end surface of the vertical insulation plate contacts the bottom end surface of the first lateral insulation plate in a pressing manner.

[0008] Furthermore, the length of the wrap over the stepped surface at the end of the first lateral insulation board is ≥ 200 mm.

[0009] Furthermore, the piping in the central piping layer includes at least one of the following: corrosive piping, thermal piping, water supply and drainage piping, and power trays.

[0010] Furthermore, the second filling space is provided with permeability barrier plates to divide the second filling space into a plurality of non-communicating chambers to which the piping is attached.

[0011] Furthermore, the multiple permeation-preventing partition plates are arranged parallel to each other in the vertical direction, with the top end surface of each permeation-preventing partition plate in contact with the bottom end surface of the first horizontal insulation plate in a pressing manner, and the bottom end surface of each permeation-preventing partition plate in contact with the top end surface of the second horizontal insulation plate in a pressing manner.

[0012] Furthermore, the horizontal distance between two adjacent permeability barrier plates is W, the length of the housing is L, and W = N * L, where N is a positive integer.

[0013] Furthermore, either only one type of piping is installed in each chamber, or a water supply and drainage pipe is further installed in the chamber where the power tray is installed, and the power tray is located above the water supply and drainage pipe.

[0014] Furthermore, the chamber is equipped with a monitoring sensor to check whether the piping is functioning correctly. When the monitoring sensor detects an abnormality in the piping's operation, it immediately transmits the detected abnormality signal to the monitoring system, prompting the worker to conduct an on-site inspection.

[0015] Furthermore, the first horizontal insulation board, the second horizontal insulation board, the vertical insulation board, and the aforementioned permeability-preventing partition board are all made of polystyrene board.

[0016] Furthermore, the thickness of the polystyrene board is 40-80 mm.

[0017] Furthermore, the material of the housing may be one or more of the following: stainless steel, PVC, aluminum alloy, cast iron, or wood.

[0018] Furthermore, the housing has a rectangular parallelepiped structure with dimensions of width * height * length of 800 mm * 400 mm * 1000 mm.

[0019] Furthermore, the particle sizes of the graded gravel filled in the first filling module are 10-20 mm, 5 mm-10 mm, and 0-5 mm, and the particle sizes of the graded gravel filled in the second filling module are 20-30 mm, 10-20 mm, and 5 mm-10 mm.

[0020] Furthermore, the top road surface load layer includes a surface layer and a pressure-receiving layer located below the surface layer. [Effects of the Invention]

[0021] Compared with the prior art, the modular structure of the shallow trench assembly for cold regions according to the present invention can not only ensure sufficient load-bearing capacity by filling the modular first filling module and second filling module in the second filling space of the trench, but also is easy to construct. Especially during inspection work, quick inspection can be completed with fewer people. By adopting the construction plan of modular filling and the first lateral insulation board laid above, non-sealed pipes, such as tray pipes, can be laid in the trench. In addition, since the filling module is filled with particle-size adjusted gravel, it can play an absorption and buffering role in case of pipe leakage, and avoid the influence of leaked substances on other pipe modules directly. And it is also convenient for the arrangement of sensors, which helps to timely discover the leakage risk and reduce losses. The filling module housing material and the polystyrene board material used are inexpensive, convenient for construction, and can be replaced at any time after the leakage risk treatment is completed.

[0022] To more clearly explain the embodiments in this specification or the technical solutions in the prior art, the drawings that need to be used in the following description of the embodiments or the prior art will be briefly described. Obviously, the drawings in the following description are only some embodiments described in the embodiments of this specification, and those skilled in the art can also obtain other drawings based on these drawings.

Brief Description of the Drawings

[0023] [Figure 1] It is a schematic diagram of the shallow trench for cold regions according to the present invention. [Figure 2] It is a schematic structural diagram of the modular structure of the shallow trench assembly for cold regions according to the present invention.

Modes for Carrying Out the Invention

[0024] To further clarify the purpose, technical proposal and advantages of the embodiments of this application, the technical proposal in the embodiments of this application, together with the drawings of the embodiments of this application, will be described clearly and completely below. Obviously, the embodiments described are some embodiments of this application, not all embodiments. Notwithstanding that, where there is no conflict, the embodiments and features of the embodiments of this application can be combined, separated, interchangeable, and / or rearranged with each other. All other embodiments obtained by a person skilled in the art without creative work based on the embodiments of this application are within the scope of protection of this application.

[0025] In drawings, part dimensions and relative dimensions may be exaggerated for clarity and / or descriptive purposes. Where exemplary embodiments can be carried out separately, specific process sequences may be performed in a different order than described. For example, two sequentially described processes may be performed essentially simultaneously or in the reverse order of their description. Also, the same reference numerals indicate the same part.

[0026] The terms used herein are not limiting and are used for the purpose of describing specific embodiments. As used herein, unless the context specifically indicates otherwise, the singular forms “one” and “the said” are intended to include the plural form. When the terms “includes” and / or “compose” and their variations are used herein, they indicate the presence of the described features, wholes, steps, operations, parts, components, and / or groups thereof, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, parts, components, and / or groups thereof. As used herein, the terms “basically,” “about,” and other similar terms are used as approximations rather than degree terms and are therefore used to describe the inherent deviations of measured values, calculated values, and / or values ​​provided that would be recognized by a person skilled in the art.

[0027] Example 1 One specific embodiment of the present invention is shown in Figures 1 and 2.

[0028] Disclosed is a shallow pipe trench modular structure for cold climates, which includes a bottom load-bearing layer 1, a middle pipe laying layer 2, and a top road surface load layer 3 arranged sequentially from bottom to top within the pipe trench, the pipe trench being divided into a first filling space 100 and a second filling space 200 from top to bottom, the first filling space 100 and the second filling space 200 being separated by a horizontally arranged first lateral insulation board 4, and the first lateral insulation board 4 being provided between the middle pipe laying layer 2 and the top road surface load layer 3, and the first lateral insulation board 4 The top end surface is in contact with the bottom end surface of the top road surface load layer 3, and the bottom end surface of the first lateral insulation board 4 is in contact with the top end surface of the middle pipe laying layer 2. The top road surface load layer 3 is filled in the first filling space 100, and the bottom load-bearing layer 1 and the middle pipe laying layer 2 are filled in the second filling space 200. The bottom load-bearing layer 1 is filled with a plurality of first filling modules 5, and the middle pipe laying layer 2 is filled with pipes and a plurality of second filling modules 6. Both the first filling modules 5 and the second filling modules 6 employ a modular structure.

[0029] Furthermore, the placement of pipes within the vertical and horizontal spaces of the pipe trench is determined based on urban pipe layout standards; for example, pipes that are frequently inspected are placed higher up.

[0030] During the construction process, filling modules filled with graded gravel are stacked and placed in the pipe trench based on the placement of the pipes in the upper, lower, left, and right spaces within the trench. This ensures the tightness and integrity of the entire trench, guarantees a certain level of heat retention, facilitates disassembly and inspection, prevents further damage to the pipes during inspection, and allows the modules to be recovered and reused after pipe inspection.

[0031] Due to factors such as the shape of the pipe groove or the dimensions of the filling modules, several voids exist between adjacent filling modules and between the filling modules and the inner wall of the second filling space 200. During the construction filling process, it is necessary to fill these voids with gravel of varying particle sizes. By filling the second filling space 200 as much as possible, it is possible to avoid affecting load stability due to the presence of voids around the modules, thereby maintaining the top surface of the central pipe laying layer 2 in a horizontal or nearly horizontal state, and thereby ensuring that the first lateral insulation board 4 is always kept in a horizontal or nearly horizontal state, and thus ensuring the heat insulation effect.

[0032] In this embodiment, parameters such as the material and particle size of the graded gravel are determined according to the spacing between the laid pipes. In principle, the goal is to ensure that the space between the pipes is densely packed, that ground pressure can be transmitted through the gravel, that the pipes are protected from being crushed, and that excavation and inspection are easy.

[0033] In one selective embodiment, the material of the housing may be a combination of one or more of stainless steel, PVC, aluminum alloy, cast iron, or wood.

[0034] In one selective embodiment, both the first filling module 5 and the second filling module 6 include a housing, which is filled with graded gravel. The housing has a rectangular parallelepiped structure, and specific dimensional parameters can be selected according to the actual situation. For example, the width*height*length dimensions of the housing are 800mm*400mm*1000mm, which are among the larger dimensions of common piping, such as sewage drainage pipes and heat pipes 10, while smaller pipes can be supported by holders and surrounding frames.

[0035] In this embodiment, the road surface load layer includes a surface layer 3-1 and a pressure-receiving layer 3-2 located below the surface layer 3-1, which uniformly transmits the road surface load and avoids crushing due to localized load concentration. Here, the pressure-receiving layer 3-2 may be understood as a concrete gradient adjustment layer, which controls the shape of aggregate particles in the concrete when pouring concrete, avoiding failure against the first lateral insulation board 4, and uses crushed stone of 20-30 mm and 10-20 mm. Quality control requires that the crushing value of coarse aggregate is 30% or less, and the content of needle-shaped and plate-shaped particles is 20% or less. In this embodiment, the role of the central pipe laying layer 2 is to sufficiently fill the area around the pipe, ensure uniform force, avoid localized crushing, and facilitate excavation and replacement. Preferably, the particle size of the graded gravel filled in the first filling module 5 is 10-20 mm, 5 mm-10 mm, and 0-5 mm.

[0036] In this embodiment, the bottom load-bearing layer 1 is provided directly below the middle pipe laying layer 2 as the internal base layer of the pipe, supporting the bottom of the pipe, bearing and transmitting the load of the weight of the pipe itself, the weight of the material inside the pipe, and the weight of the other filling layers themselves, thereby preventing damage to the second lateral insulation board 8. Preferably, the particle size of the graded gravel filled in the second filling module 6 is 20-30 mm, 10-20 mm, or 5-10 mm.

[0037] To further improve the heat retention effect, vertical insulation boards 7 are laid on the vertical sides of the pipe groove, and second horizontal insulation boards 8 are laid on the bottom of the pipe groove, thereby providing heat retention to the bottom and sides. The first horizontal insulation board 4, the second horizontal insulation board 8, and the vertical insulation board 7 surround the second filled space 200, which is relatively closed, in order to provide good heat retention to the second filled space 200. Selectively, the thickness of the vertical insulation board 7 and the second horizontal insulation board 8 is 40 mm to 80 mm. For example, the vertical insulation board 7 and the second horizontal insulation board 8 may typically be 60 mm thick. If the piping is a critical thermal piping, the vertical insulation board 7 and the second horizontal insulation board 8 can be made 80 mm thicker. If the piping is a pipe that requires heat dissipation, such as for power or telecommunications, the filled particle-sized gravel can perform both cooling and heat dissipation functions, and the vertical insulation board 7 and the second horizontal insulation board 8 can be made 40 mm thicker. All of the above measures can be further optimized and adjusted based on the burial depth of the pipe trench and the local climate.

[0038] In this embodiment, the dimensions of the first filling space 100 within the pipe groove are larger than the dimensions of the second filling space 200. Specifically, there is a stepped surface 300 within the pipe groove, and the purpose of providing the stepped surface 300 is to overlap the end of the first lateral insulation board 4 onto the stepped surface 300. The plane on which the stepped surface 300 is located is the partition surface between the first filling space 100 and the second filling space 200. Both ends of the first lateral insulation board 4 overlap onto the stepped surface 300, and the top end surface of the vertical insulation board 7 contacts the bottom end surface of the first lateral insulation board 4 in a pressing manner. Selectively, the thickness of the first lateral insulation board 4 is 60 mm, and the overlap length of the end of the first lateral insulation board 4 on the stepped surface 300 is ≥ 200 mm. After the first horizontal insulation board 4 is laid, the first horizontal insulation board 4 becomes the bottom template of the concrete slope adjustment layer, and the upper concrete slope adjustment layer does not need to be dismantled after construction. The first horizontal insulation board 4, the vertical insulation boards 7 on the sides, and the second horizontal insulation board 8 on the bottom form a completely closed insulation system.

[0039] In this embodiment, the piping in the central piping layer 2 includes at least one of the following: corrosive piping 9, heat piping 10, water supply and drainage piping 11, and power tray 12.

[0040] Based on the type of pipes in the trench, the second filled space 200 within the trench can be divided into multiple chambers using permeability barrier plates, thereby avoiding mutual influences caused by leaks, such as sewer pipes affecting water supply pipes, drainage pipes affecting power and telecommunications pipes, and corrosive liquid pipes affecting metal pipes. Specifically, permeability barrier plates are provided within the second filled space 200 to divide it into multiple non-communicating chambers to which the piping is installed. The multiple permeability barrier plates are arranged parallel to each other in the longitudinal direction, with the top end faces of the permeability barrier plates pressing against the bottom end faces of the first lateral insulation plate 4, and the bottom end faces of the permeability barrier plates pressing against the top end faces of the second lateral insulation plate 8. This results in each chamber being relatively closed. Furthermore, the sealing effect can be improved by applying a sealing adhesive or attaching a sealing gasket to the end face contact positions.

[0041] Here, the horizontal distance between two adjacent permeability barrier plates is W, the length of the housing is L, and W = N * L, where N is a positive integer. This dimensional design eliminates the need to fill with additional loose crushed stone and facilitates the direct filling of modularized filling modules into each chamber.

[0042] In this embodiment, either only one type of piping is laid in each chamber, or a water supply and drainage pipe 11 is further laid in the chamber where the power tray 12 is laid, and the power tray 12 is located above the water supply and drainage pipe 11.

[0043] In this embodiment, the structure of the pipe-channel modular system may be equipped with various types of sensors that, if necessary, directly link with alarm facilities and other relevant units. In one selective embodiment, a monitoring sensor 13 is provided in the chamber to monitor whether the piping is functioning correctly. When the monitoring sensor 13 detects an abnormality in the operation of the piping, it immediately transmits the detected abnormality signal to the monitoring side, alerting workers to on-site inspections. Exemplarily, the sensor assembly can be selected from heat-temperature, gas-gas leak, corrosive liquid, water supply, drainage, rainwater, sewage, reclaimed water-liquid leak, power, and low-voltage-electrical leakage. By providing the monitoring sensor 13, the type of leak can be directly and accurately monitored, saving social resources by eliminating the need for workers of various trades to be present at the same time.

[0044] In this embodiment, the first lateral insulation board 4, the second lateral insulation board 8, the vertical insulation board 7, and the permeability barrier board are all made of polystyrene board. Polystyrene board has low manufacturing costs, stable chemical properties, and can provide long-lasting sealing protection even if corrosive leakage occurs, thereby effectively preventing corrosion to other pipes before inspectors arrive. The thickness of the polystyrene board is selectively 40-80 mm, and the specific thickness can be selected according to the actual situation, and can be appropriately made thicker or thinner.

[0045] In one selective embodiment, a waterproofing layer 14 extending up to the stepped surface 300 is provided on the bottom wall and inner wall of the pipe groove, and a second lateral insulation board 8, a vertical insulation board 7, and a first lateral insulation board 4 are laid on the waterproofing layer 14, so that the waterproofing layer 14 forms a perfectly smooth inner wall of the pipe groove, ensuring that leaked liquids and the construction process do not reduce the durability of the pipe groove, reduce damage to the inside of the pipe groove, and improve the service life. Here, the waterproofing layer 14 may include a leveling layer, a waterproofing layer, and a protective layer, the leveling layer depending on the conditions around the pipe groove, the waterproofing layer using waterproof roofing material or waterproof mortar, and the protective layer using low-strength mortar.

[0046] In this embodiment, the pipe trench may be expanded into a common trench depending on the actual situation, the filled particle-size-adjusted gravel may be replaced with steel frames, or an inspection space that workers can pass through may be provided.

[0047] Compared to conventional technology, the shallow pipe trench assembly type modular structure for cold regions according to this embodiment has at least one of the following beneficial effects.

[0048] 1. By filling the second filling space of the pipe trench with modularized first and second filling modules, sufficient load-bearing capacity can be guaranteed. Furthermore, it is easy to lay various types of pipes in combination, avoids mutual interference, facilitates inspection and replacement, and especially during inspection operations, inspections can be completed quickly with fewer personnel. Mutual support between filling modules forms an overall structural system, improving pressure resistance. If the surface is a special heavy-load road surface, pipes do not need to be laid in the top layer module, and it can be used only as a pressure-resistant layer, which can then be replaced after damage.

[0049] 2. By adopting a construction method that combines modular filling with a first lateral insulation board laid above, the insulation effect of the pipe trench is improved, and the probability of frost damage in shallow pipe trenches is reduced. When construction of the top road surface load layer begins, the bottom load-bearing layer and the middle pipe laying layer within the pipe trench are already constructed, and the first lateral insulation layer has already been laid on the top surface of the middle pipe laying layer, with surface treatment already completed. This avoids the adverse effects that processes such as concrete vibration and consolidation have on the pipe trench during the construction of the top road surface load layer. Therefore, this application allows for the laying of unsealed pipes, such as tray pipes, within the pipe trench.

[0050] 3. The filling module is filled with graded gravel, which can absorb and buffer leaks in the event of a pipe leak, preventing the leak from directly affecting other pipe modules. The filled gravel can also be reused, reducing material waste.

[0051] 4. By adopting a modular filling construction method, it is convenient for sensor placement, enabling intelligent monitoring, timely detection of leak hazards, and helps reduce losses.

[0052] 5. The materials used for the filled module enclosure and the polystyrene boards are inexpensive, easy to install, and can be replaced at any time after leak hazard treatment is complete.

[0053] The specific embodiments described above have provided further details regarding the purpose, technical proposal, and beneficial effects of this application. However, these are merely specific examples of the application and are not intended to limit the scope of protection. It should be understood that any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection. [Explanation of Symbols]

[0054] 100, 1st filling space, 200, 2nd filling space, 300, step surface, 1. Bottom load-bearing layer, 2. Middle pipe laying layer, 3. Top road surface load layer, 3-1. Surface layer, 3-2. Pressure-receiving layer, 4. First lateral insulation board, 5. First filling module, 6. Second filling module, 7. Vertical insulation board, 8. Second lateral insulation board, 9. Corrosive piping, 10. Heat piping, 11. Water supply and drainage piping, 12. Power tray, 13. Monitoring sensor, 14. Waterproofing layer.

Claims

1. A shallow pipe trench modular structure for cold regions, comprising a bottom load-bearing layer (1), a middle pipe laying layer (2), and a top road surface load layer (3) arranged sequentially from bottom to top within the pipe trench, The inside of the pipe groove is divided from top to bottom into a first filling space (100) and a second filling space (200), and the first filling space (100) and the second filling space (200) are separated by a horizontally positioned first lateral insulation plate (4), the first lateral insulation plate (4) is the bottom template of the concrete slope adjustment layer. The top road surface load layer (3) is filled within the first filling space (100), and the bottom load-bearing layer (1) and the middle pipe laying layer (2) are filled within the second filling space (200). The bottom load-bearing layer (1) is filled with a plurality of first filling modules (5), and the middle pipe laying layer (2) is filled with pipes and a plurality of second filling modules (6). The first filling module (5) and the second filling module (6) both include a housing, and the housing is filled with graded gravel. The first lateral insulation board (4) is provided between the central pipe laying layer (2) and the top road surface load layer (3), the top end surface of the first lateral insulation board (4) is in contact with the bottom end surface of the top road surface load layer (3), the bottom end surface of the first lateral insulation board (4) is in contact with the top end surface of the central pipe laying layer (2), and the top surface of the central pipe laying layer (2) maintains a horizontal state. A vertical insulation board (7) is laid on the vertical side surface of the pipe groove, and a second horizontal insulation board (8) is laid on the bottom surface of the pipe groove. The first horizontal insulation board (4), the second horizontal insulation board (8), and the vertical insulation board (7) surround the relatively closed second filling space (200), and the first horizontal insulation board (4), the second horizontal insulation board (8), and the vertical insulation board (7) are all made of polystyrene board. A shallow pipe groove modular structure for cold regions, characterized in that the dimensions of the first filling space (100) are larger than the dimensions of the second filling space (200), there is a stepped surface (300) inside the pipe groove, the plane on which the stepped surface (300) is located is the partition surface between the first filling space (100) and the second filling space (200), both ends of the first lateral insulation plate (4) overlap the stepped surface (300), and the top end surface of the vertical insulation plate (7) contacts the bottom end surface of the first lateral insulation plate (4) in a pressing manner.

2. The shallow pipe groove modular structure for cold regions according to claim 1, characterized in that the wrap length of the end of the first lateral insulation board (4) over the stepped surface (300) is ≥ 200 mm.

3. The shallow pipe trench modular structure for cold regions according to claim 1 or 2, characterized in that the piping in the central piping laying layer (2) includes at least one of the following: corrosive piping (9), thermal piping (10), water supply and drainage piping (11), and power tray (12).

4. The shallow pipe groove modular structure for cold regions according to claim 3, characterized in that a permeability-preventing partition plate is provided within the second filled space (200) to divide the second filled space (200) into a plurality of chambers that do not communicate with each other, to which the piping is attached.

5. The shallow pipe groove modular structure for cold regions according to claim 4, characterized in that the plurality of permeability-preventing partition plates are arranged parallel to each other in the vertical direction, the top end surface of each permeability-preventing partition plate is in contact with the bottom end surface of the first horizontal insulation plate (4) in a pressing manner, and the bottom end surface of each permeability-preventing partition plate is in contact with the top end surface of the second horizontal insulation plate (8) in a pressing manner.

6. A monitoring sensor (13) is provided inside the chamber to monitor whether the piping is functioning correctly. The shallow pipe trench assembly modular structure for cold regions according to claim 4 or 5, characterized in that when a monitoring sensor (13) detects an abnormality in the operation of the piping, it immediately transmits the detected abnormality signal to the monitoring side and alerts the worker to inspect the site.

7. The aforementioned penetration-preventing partition plates are all made of polystyrene board. The shallow pipe groove modular structure for cold regions according to claim 6, characterized in that the thickness of the polystyrene board is 40-80 mm.

8. The shallow pipe trench modular structure for cold regions according to claim 1, characterized in that the top road surface load layer (3) includes a surface layer (3-1) and a pressure-receiving layer (3-2) located below the surface layer (3-1).

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