Adaptive frost heaving prevention system for cold and arid region surface covering station

Abstract

The application relates to a self-adaptive frost heaving prevention system for a surface covering station field in a cold and arid area, belonging to the field of soil mechanics and cold region engineering, which comprises a scattered block stone layer, a stone cage device, a gravel layer, a water isolation layer, a building layer, a surface covering layer, a sand well device, a water pumping device and a control module; the scattered block stone layer, the stone cage device, the gravel layer, the water isolation layer, the building layer and the surface covering layer are sequentially stacked and arranged; the scattered block stone layer and the gravel layer are both provided with drainage holes connected with the sand well device; the water pumping device is arranged at the bottom of the sand well device; the control module is in communication connection with the water pumping device and is used for adjusting the working state of the water pumping device. The frost heaving prevention system can reduce the damage of soil body frost heaving caused by water-gas migration, aggregation and freezing of the surface soil body under the covering station field to the upper building, can guarantee high-performance service of the surface covering station field, can reduce the maintenance cost of the station field damage caused by frost heaving, and can realize water resource recycling and vegetation protection.

Description

Technical Field

[0001] This invention relates to the field of soil mechanics in cold regions, and more specifically, to an adaptive surface covering system for frost heave prevention in cold and arid regions. Background Technology

[0002] Cold and arid regions have a large number of important infrastructure projects, such as high-speed railway subgrades, airport runways, and oil pipeline stations, which have extremely high requirements for foundation deformation. The upper surfaces of these infrastructures are usually covered with concrete panels, which are in a closed state, and the soil that forms the foundations of these projects is usually in an unsaturated state. When the outside temperature drops below zero in winter, water vapor migration is an important way for moisture to enter and accumulate in the unsaturated foundations of these projects. The closed upper surfaces of these infrastructures prevent water vapor from migrating and diffusing into the atmosphere, causing water vapor to accumulate, condense, and turn into ice beneath the closed upper surfaces. This leads to frost heave, which causes damage to the superstructure, resulting in economic losses, environmental damage, and increased maintenance costs. Summary of the Invention

[0003] The purpose of this invention is to provide an adaptive surface covering station anti-frost heave system for cold and arid regions, which can reduce the damage of soil and water frost heave to the superstructure, reduce economic losses, reduce damage to the surrounding environment, and reduce maintenance costs.

[0004] The embodiments of the present invention are implemented as follows:

[0005] In a first aspect, the present invention provides an adaptive surface covering station anti-frost heave system for cold and arid regions, comprising:

[0006] The system comprises a loose-fill rubble layer, a gabion device, a gravel layer, a waterproof layer, a building layer, a surface covering layer, a sand well device, a pumping device, and a control module. The loose-fill rubble layer, gabion device, gravel layer, waterproof layer, building layer, and surface covering layer are arranged in a sequentially stacked manner. Both the loose-fill rubble layer and the gravel layer are provided with drainage holes that connect to the sand well device. The pumping device is located at the bottom of the sand well device and is used to extract surface runoff collected by the sand well device and excess water from the foundation soil of the station. The control module is communicatively connected to the pumping device and is used to adjust the working status of the pumping device.

[0007] In an optional embodiment, the drainage holes on the loose fill stone layer and the drainage holes on the gravel layer are located on the same side.

[0008] In an optional embodiment, the sand well device includes a sand well for collecting water, a support platform, a water conveying pipe, and an insulation layer. The sand well for collecting water is connected to the drainage hole. The support platform is located on the top of the sand well for collecting water. The water conveying pipe is connected to the sand well for collecting water. An overflow port is provided at the end of the water conveying pipe. The insulation layer is wrapped around the water conveying pipe.

[0009] In an optional embodiment, the water collection well includes a high-strength reinforced concrete structure, filling sand, and a bottom pile. The high-strength reinforced concrete structure is provided with a water collection cavity. The foundation is connected to the top of the high-strength reinforced concrete structure and seals the water collection cavity. The water collection cavity is connected to the drainage hole. The filling sand is filled in the water collection cavity. The bottom pile is fixed to the bottom of the high-strength reinforced concrete structure.

[0010] In an optional embodiment, the pumping device includes a coarse sand layer with water passage holes, a unidirectional geomembrane connected to the side of the coarse sand layer, a water storage tank connected to the side of the unidirectional geomembrane away from the coarse sand layer, a water pump connected to the water storage tank, and an outlet pipe connected to the water pump. The water storage tank is provided with an inlet connected to the unidirectional geomembrane, and the unidirectional geomembrane only allows water to flow from the coarse sand layer to the water storage tank.

[0011] In an optional embodiment, the gabion device includes a gabion-shaped boulders layer disposed between the loose boulders layer and the gravel layer.

[0012] In an optional embodiment, the gabion-shaped stone layer includes a hinged steel buckle, high-strength glass fiber, force-measuring optical fiber, and filling stones. The ends of the multiple high-strength glass fibers converge and are connected to the hinged steel buckle at the convergence point. The force-measuring optical fiber is installed inside the high-strength glass fiber to obtain the force and tensile strength of the high-strength glass fiber. The filling stones are installed in the area enclosed by the multiple high-strength glass fibers.

[0013] In an optional embodiment, the control module includes a controller and a water level and temperature monitoring module and a water chemistry monitoring module, both of which are communicatively connected to the controller. The water level and temperature monitoring module and the water chemistry monitoring module are both located in the pumping device, and the controller is communicatively connected to the pumping device.

[0014] In an optional embodiment, the insulation layer is configured as an electrically heated layer.

[0015] In an optional embodiment, the insulation layer is configured as glass wool, rock wool pipe, or polyurethane layer.

[0016] The beneficial effects of the embodiments of the present invention are:

[0017] In summary, the adaptive surface cover protection system for cold and arid regions provided in this embodiment includes a pumping device, a gabion device, a sand collection well device, a control module, and a bottom layer of loose rubble, a gravel layer above the gabion device, a waterproof layer above the gravel layer, a building layer and surface cover layer above the waterproof layer, a foundation above the sand collection well, bottom piles below the sand collection well, a water conveyance pipe connected to the sand collection well, an overflow outlet extending upward from the water conveyance pipe, and an insulation layer surrounding the water conveyance pipe. Drainage holes are provided on the same side of both the gravel layer and the loose rubble layer, connecting to the sand collection well on the right side to directly discharge groundwater, eliminating pore water pressure and reducing the damage to normal building layers caused by groundwater freezing. A pumping device is installed on the lower right side of the sand collection well. This device removes surface runoff and excess water from the foundation soil collected by the sand collection well. It also collects and purifies groundwater for use in surface covering, landscaping, and domestic water supply, effectively reducing reliance on local tap water and saving costs. The gabion system, filled with rubble, has a high-strength fiberglass frame secured with hinged steel clips. Force-measuring optical fibers are bound to the high-strength fiberglass to monitor force and tension. The gabion system itself serves as a good load-bearing layer, and the surrounding optical fibers allow for real-time monitoring of its stress and tension, playing a crucial role in ensuring the normal and safe operation of the surface-covered station. The sand collection wells collect liquid water accumulated in the loose rubble layer by filling it with sand and connect to the columns of the superstructure, providing support.

[0018] Furthermore, this anti-frost heave system fully utilizes the weak water-holding capacity of gravel and the water-impermeable properties of the waterproof layer to effectively reduce the accumulation of water and air in the soil beneath the covered station in cold and arid areas. This reduces the damage to the superstructure caused by frost heave due to the migration, accumulation, and freezing of water and air in the soil beneath the covered station, ensuring the high-performance service of the surface-covered station and reducing maintenance costs for station damage caused by frost heave. At the same time, the system can effectively collect surface runoff and excess water in the foundation soil of the station, which can be used for irrigation of the station vegetation during the dry season, realizing the reuse of water resources and vegetation protection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the adaptive surface covering station anti-frost heave system in arid and cold regions according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the pumping device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the gabion device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of a sand collection well according to an embodiment of the present invention;

[0024] Figure 5 This is a flowchart illustrating the control module of an embodiment of the present invention.

[0025] icon:

[0026] 001-Drainage hole; 100-Random stone layer; 200-Gabion device; 210-Hinged steel clip; 220-High-strength fiberglass; 230-Force measuring fiber optic; 240-Filling stones; 300-Gravel layer; 400-Waterproof layer; 500-Building layer; 600-Surface covering layer; 700-Sand well device; 710-Water collection sand well; 711-High-strength reinforced concrete structure; 712-Filling sand; 713-Bottom pile; 720-Pile cap; 730-Water conveyance pipeline; 740-Insulation layer; 750-Overflow outlet; 800-Pumping device; 810-Coarse sand layer; 811-Water passage hole; 820-One-way geomembrane; 830-Water storage tank; 831-Inlet; 832-Exhaust outlet; 840-Water pump; 850-Outlet pipe; 900-Control module. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Example

[0034] Please combine Figures 1-5 This embodiment provides an adaptive surface cover station frost heave prevention system for cold and arid regions, including a loose-fill rubble layer 100, a gabion device 200, a gravel layer 300, a waterproof layer 400, a building layer 500, a surface cover layer 600, a sand well device 700, a pumping device 800, and a control module 900. The loose-fill rubble layer 100, gabion device 200, gravel layer 300, waterproof layer 400, building layer 500, and surface cover layer 600 are arranged in sequence. Both the loose-fill rubble layer 100 and the gravel layer 300 are provided with drainage holes 001 that connect to the sand well device 700. The pumping device 800 is located at the bottom of the sand well device 700 and is used to collect groundwater. The control module 900 is communicatively connected to the pumping device 800 and is used to adjust the working status of the pumping device 800.

[0035] Based on the above, the adaptive surface covering station anti-frost heave system for cold and arid regions provided in this embodiment has at least the following advantages:

[0036] 1. It prevents rainwater and snowmelt from seeping into the unsaturated foundation, reducing the damage to normal building layers caused by the freezing of infiltrated water;

[0037] 2. It prevents underground liquid water and water vapor from migrating and accumulating in the foundation of the surface-covered site under the action of freezing temperature gradient in winter, so that it condenses in the loose stone layer 100 and the stone and gravel layer 300 under the water-proof layer 400. The weak water-holding capacity of the stone layer is used to drain the accumulated water into the sand well device 700, thereby reducing the accumulation of water inside the foundation of the surface-covered station in cold and arid areas, thus reducing the damage to the normal building layer 500 caused by the migration and freezing of water inside the foundation.

[0038] 3. Use a pumping device to collect groundwater, optimize the use of groundwater, reduce the demand for local tap water, and save costs;

[0039] 4. The gabion device 200 serves as a safe and stable bearing layer. Its stress and tension can be monitored in real time via optical fiber, providing timely warnings and preventing safety accidents caused by ground instability.

[0040] 5. The top of the sand well is connected to the upper column, and the bottom pile 713 is connected to the bearing layer, which effectively reduces costs and enhances structural stability.

[0041] The following embodiments illustrate the details of the adaptive surface covering station anti-frost heave system provided in this application for cold and arid regions.

[0042] In this embodiment, optionally, the drainage holes 001 on the loose rubble layer 100 and the drainage holes 001 on the gravel layer 300 are located on the same side. This facilitates the installation of the sand well device 700, improves the compactness of the overall structure, and reduces damage to the soil layer.

[0043] Please combine Figure 1 In this embodiment, optionally, the sand well device 700 includes a sand well 710, a support 720, a water supply pipe 730, and an insulation layer 740. The sand well 710 is connected to a drain hole 001. The support 720 is located on the top of the sand well 710. The water supply pipe 730 is connected to the sand well 710. An overflow port 750 is provided at the end of the water supply pipe 730. The insulation layer 740 is wrapped around the water supply pipe 730.

[0044] Please combine Figure 1 and Figure 4 Optionally, the sand collection well 710 includes a high-strength reinforced concrete structure 711, filling sand 712, and bottom pile 713. The high-strength reinforced concrete structure 711 is provided with a water collection cavity. The foundation 720 is connected to the top of the high-strength reinforced concrete structure 711 and seals the water collection cavity. The water collection cavity is connected to the drainage hole 001. The filling sand 712 fills the water collection cavity. The bottom pile 713 is fixed to the bottom of the high-strength reinforced concrete structure 711.

[0045] It should be noted that the high-strength reinforced concrete structure 711 can use high-strength steel bars with fine-rolled thread HRB400 or C60 grade concrete, etc.

[0046] It should be noted that the filling sand 712 can be river sand, mountain sand, crushed sand or water-quenched furnace slag, etc.

[0047] It should be noted that the water collection hole can be made using pipe fittings such as PE pipe, PVC pipe, and PPR pipe.

[0048] It should be noted that the 720 foundation can be manufactured using C30 concrete, etc.

[0049] It should be noted that the bottom pile 713 can be manufactured using C35 concrete, etc.

[0050] It should be noted that the insulation layer 740 can be made of materials such as glass wool, rock wool pipe, or polyurethane. It should also be understood that in other embodiments, the insulation layer 740 can also be configured as an electric heating layer for easy temperature control.

[0051] It should be noted that the water supply pipe 730 can be made of materials such as PE pipe, PVC pipe, and PPR pipe.

[0052] Please combine Figure 1 and Figure 2 In this embodiment, optionally, the pumping device 800 includes a coarse sand layer 810 with water passage holes 811, a unidirectional geomembrane 820 connected to the side of the coarse sand layer 810, a water storage tank 830 connected to the side of the unidirectional geomembrane 820 away from the coarse sand layer 810, a water pump 840 connected to the water storage tank 830, and a water outlet pipe 850 connected to the water pump 840. The water storage tank 830 is provided with an inlet 831 connected to the unidirectional geomembrane 820. The unidirectional geomembrane 820 only allows water to flow from the coarse sand layer 810 to the water storage tank 830.

[0053] It should be understood that the water passage 811 can be made of PE pipe, PVC pipe, PPR pipe and other pipe fittings; the coarse sand layer 810 is placed in the box-type grid and densely filled; the unidirectional geomembrane 820 can be made of thermoplastic resin material with good heat resistance and cold resistance - polystyrene and other materials; the water storage tank 830 can be made of carbon steel plate water storage tank 830 or reinforced concrete water tank; the water inlet 831 can be formed by PE pipe, PVC pipe, PPR pipe and other pipe fittings; the pump body, pump cover and suspension of the water pump 840 can be made of HT200 cast iron, the base, pad and other parts of the water pump 840 can be made of HT150 cast iron and other materials, and the impeller, mouth ring, shaft sleeve and other parts of the water pump 840 can be made of HT250 cast iron.

[0054] It should be understood that a water inlet 832 can be installed on the water storage tank 830, and the water pump 840 is connected to the water inlet 832. The water inlet 832 can be formed by PE pipe, PVC pipe, PPR pipe and other fittings, and the water outlet pipe 850 can be made of PE pipe, PVC pipe, PPR pipe and other fittings.

[0055] In this embodiment, optionally, the gabion device 200 includes a gabion-shaped boulders layer, which is disposed between the loose boulders layer 100 and the gravel layer 300.

[0056] Furthermore, the gabion-type boulders layer includes a hinged steel clip 210, high-strength glass fiber 220, force-measuring fiber optic cable 230, and filling stones 240. The ends of multiple high-strength glass fibers 220 converge and are connected to the hinged steel clip 210 at the convergence point. The force-measuring fiber optic cable 230 is installed inside the high-strength glass fiber 220 to obtain the stress and tensile strength of the high-strength glass fiber 220. The filling stones 240 are installed in the area enclosed by multiple high-strength glass fibers 220.

[0057] It should be understood that high-strength glass fiber 220 can also be replaced by high-strength fiber, steel bars, etc., which are not exhaustively listed in this embodiment.

[0058] It should be understood that the high-strength reinforced concrete structure 711 can be made of high-strength steel bars with fine-rolled thread HRB400 and C60 grade concrete; the filling sand 712 can be made of river sand, mountain sand, crushed sand or water-quenched furnace slag; the water collection hole can be formed by pipe fittings such as PE pipe, PVC pipe or PPR pipe; the pile cap 720 can be made of C30 concrete and the bottom pile 713 can be made of C35 concrete.

[0059] Please combine Figure 5 In this embodiment, optionally, the control module 900 includes a controller and a water level and temperature monitoring module and a water chemistry monitoring module, both communicatively connected to the controller. Both the water level and temperature monitoring modules are located in the water storage tank 830. The controller is communicatively connected to the water pump 840. If the water level and temperature monitoring module malfunctions during operation, it sends a warning signal to the controller via a wireless transmitter. The controller processes the data and adjusts the pumping device 800 to stop water intake at the inlet 831 when the water level exceeds the limit or the water temperature is abnormal. When the water chemistry monitoring fails to meet the standards, the wastewater must be treated through the wastewater treatment system until the standards are met before normal drainage resumes.

[0060] Thus, the control module 900 includes functions such as automatic pumping control, water level and temperature monitoring and alarm, chemical substance monitoring, automatic treatment of pollutants exceeding standards, and information transmission.

[0061] The adaptive surface covering protection system for cold and arid regions provided in this embodiment has a good protective effect on surface buildings, can improve water resource utilization efficiency, and can reduce maintenance costs.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adaptive surface covering station anti-frost heave system for cold and arid regions, characterized in that, include: The system comprises a loose-filled rubble layer (100), a gabion device (200), a gravel layer (300), a waterproof layer (400), a building layer (500), a surface covering layer (600), a sand well device (700), a pumping device (800), and a control module (900), wherein the loose-filled rubble layer (100), the gabion device (200), the gravel layer (300), the waterproof layer (400), the building layer (500), and the surface covering layer (600) are arranged in a sequentially stacked manner. Both the loose-fill rubble layer (100) and the gravel layer (300) are provided with drainage holes (001) that connect to the sand well device (700); the pumping device (800) is located at the bottom of the sand well device (700) and is used to extract the surface runoff collected by the sand well device and excess water in the foundation soil of the station; the control module (900) is communicatively connected to the pumping device (800) and is used to adjust the working status of the pumping device (800); The gabion device (200) includes a gabion-shaped boulders layer, which is disposed between the loose boulders layer (100) and the gravel layer (300); The gabion-shaped stone layer includes a hinged steel buckle (210), high-strength glass fiber (220), force-measuring optical fiber (230), and filling stones (240). The ends of multiple high-strength glass fibers (220) converge and are connected to the hinged steel buckle (210) at the convergence point. The force-measuring optical fiber (230) is installed inside the high-strength glass fiber (220) to obtain the force and tensile strength of the high-strength glass fiber (220). The filling stones (240) are installed in the area enclosed by multiple high-strength glass fibers (220).

2. The adaptive surface covering station anti-frost heave system for cold and arid regions according to claim 1, characterized in that: The drainage holes (001) on the loose rubble layer (100) and the drainage holes (001) on the gravel layer (300) are located on the same side.

3. The adaptive surface covering station frost heave prevention system for cold and arid regions according to claim 1, characterized in that: The sand well device (700) includes a sand well (710), a support platform (720), a water supply pipe (730), and an insulation layer (740). The sand well (710) is connected to the drain hole (001). The support platform (720) is located on the top of the sand well (710). The water supply pipe (730) is connected to the sand well (710). An overflow port (750) is provided at the end of the water supply pipe (730). The insulation layer (740) is wrapped around the water supply pipe (730).

4. The adaptive surface covering station frost heave prevention system for cold and arid regions according to claim 3, characterized in that: The water collection well (710) includes a high-strength reinforced concrete structure (711), filling sand (712), and a bottom pile (713). The high-strength reinforced concrete structure (711) is provided with a water collection cavity. The foundation (720) is connected to the top of the high-strength reinforced concrete structure (711) and closes the water collection cavity. The water collection cavity is connected to the drainage hole (001). The filling sand (712) is filled in the water collection cavity. The bottom pile (713) is fixed to the bottom of the high-strength reinforced concrete structure (711).

5. The adaptive surface covering station frost heave prevention system for cold and arid regions according to claim 3, characterized in that: The insulation layer (740) is configured as an electric heating layer.

6. The adaptive surface covering station anti-frost heave system for cold and arid regions according to claim 3, characterized in that: The insulation layer (740) is made of glass wool, rock wool pipe or polyurethane layer.

7. The adaptive surface covering station frost heave prevention system for cold and arid regions according to claim 1, characterized in that: The pumping device (800) includes a coarse sand layer (810) with a water passage hole (811), a one-way geomembrane (820) connected to the side of the coarse sand layer (810), a water storage tank (830) connected to the side of the one-way geomembrane (820) away from the coarse sand layer (810), a water pump (840) connected to the water storage tank (830), and a water outlet pipe (850) connected to the water pump (840). The water storage tank (830) is provided with an inlet (831) connected to the one-way geomembrane (820). The one-way geomembrane (820) only allows water to flow from the coarse sand layer (810) to the water storage tank (830).

8. The adaptive surface covering station frost heave prevention system for cold and arid regions according to claim 1, characterized in that: The control module (900) includes a controller and a water level and temperature monitoring module and a water chemistry monitoring module, both of which are communicatively connected to the controller. The water level and temperature monitoring module and the water chemistry monitoring module are both located in the pumping device (800). The controller is communicatively connected to the pumping device (800).

Images