A frozen soil slope frost heaving force in-situ measuring device

Abstract

The utility model discloses a kind of frozen soil side slope frost heaving force in situ measuring devices, belong to basic engineering technical field, including the force warning brick and conventional brick of laying in the frozen soil side slope outside, conventional brick is arranged around force warning brick;The force warning brick and conventional brick all include brick body;The brick body includes energy-absorbing component;The energy-absorbing component is arranged by several energy-absorbing cell bodies;Energy-absorbing cell body is side edge concave and hollow negative Poisson's ratio structure;The force warning brick further includes force fiber;Force fiber is arranged at the bottom of force warning brick, contact with frozen soil side slope, for measuring the frost heaving force of frozen soil side slope.The utility model has the advantages of simple installation, stable structure etc.

Description

Technical Field

[0001] This utility model belongs to the field of basic engineering technology and relates to a frost heave force measuring device, and more particularly to an in-situ measuring device for frost heave force of frozen soil slope. Background Technology

[0002] Water conveyance channels are the main structures for long-distance water transfer projects. In complex environments, soil degradation in the channel bed is a major cause of slope damage in seasonally frozen areas. In these regions, the temperature difference between winter and summer is significant, with the frozen ground depth reaching up to 2.0 meters. The frost heave of the soil severely impacts the safety of the canal system. Supervisory personnel urgently need to monitor the frost heave force data of the channel slopes in real time and urgently address the hazards posed by these canal systems.

[0003] Traditional frost heave force measuring devices need to be pre-embedded in undisturbed soil. Due to differences in soil properties across regions, these devices are prone to disturbance and damage, resulting in large-scale engineering projects and high labor costs. Traditional circular frost heave force measuring devices are difficult to fit closely to the soil surface for measurement, requiring the removal of the surface lining before in-situ testing. However, water supply channels are long and complex, often hundreds of kilometers long, making these projects time-consuming and labor-intensive. Frost heave force measuring devices used in these projects are prone to problems such as measurement drift and low accuracy, failing to accurately reflect the actual frost heave damage conditions on site. Utility Model Content

[0004] This invention provides an in-situ measurement device for frost heave force on frozen soil slopes to overcome the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An in-situ measurement device for frost heave force of a frozen soil slope includes force-measuring warning bricks and conventional bricks laid outside the frozen soil slope, with the conventional bricks arranged around the force-measuring warning bricks. Both the force-measuring warning bricks and the conventional bricks include a brick body. The brick body includes an energy-absorbing component. The energy-absorbing component is composed of several energy-absorbing cells arranged in a negative Poisson's ratio structure with concave sides and a hollow interior. The force-measuring warning brick also includes a force-measuring optical fiber. The force-measuring optical fiber is disposed at the bottom of the force-measuring warning brick and contacts the frozen soil slope for measuring the frost heave force of the frozen soil slope.

[0007] To optimize the above technical solution, the specific measures also include:

[0008] Furthermore, the brick body also includes an XPC insulation board fixed to the lower side of the energy-absorbing component.

[0009] Furthermore, the brick body also includes a concrete layer poured on the upper side of the energy-absorbing member.

[0010] Furthermore, the outer side of the energy-absorbing component is filled with a ring of elastic adhesive.

[0011] Furthermore, the brick body is hexagonal in shape.

[0012] Furthermore, it also includes a heating pipe; the heating pipe is buried in the frozen soil slope and is capable of heating the frozen soil slope.

[0013] Furthermore, it also includes a solar battery and a solar panel; the solar battery supplies power to the heating pipe; the solar panel is installed on the surface of the frozen soil slope and is electrically connected to the solar battery, and the solar panel is used to convert solar energy into electrical energy and store it in the solar battery.

[0014] Furthermore, the force-measuring warning brick also includes a solar-powered warning light; the solar-powered warning light is installed on the outer surface of the force-measuring warning brick.

[0015] Furthermore, it also includes an inter-block displacement sensor assembly; the inter-block displacement sensor assembly is disposed between adjacent force-measuring warning bricks and conventional bricks; the inter-block displacement sensor includes a Hall sensor and a magnet; the Hall sensor is fixed to the side of the force-measuring warning brick, the magnet is fixed to the side of the conventional brick, and the Hall sensor and the magnet are arranged opposite to each other.

[0016] Furthermore, the bottom of the force-measuring early warning brick is provided with a groove along the side, and the force-measuring optical fiber is embedded in the groove.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. The force-measuring and early warning bricks of this device are directly laid flat on the ground surface, and the force-measuring optical fiber is in direct contact with the soil after lining. During the installation process, it will not disturb the original soil, ensuring the original state of the soil. The structure is simple and easy to install, with minimal damage to the channel, which can effectively reduce production costs and engineering workload.

[0019] II. The force-measuring and early warning bricks and conventional bricks of this device are equipped with XPC insulation boards, which have the characteristics of high thermal resistance, low linearity, and low expansion ratio, and have long-lasting and stable thermal insulation performance. At the same time, they have extremely high compressive strength, strong impact resistance, extremely low water absorption, stable molecular structure, no gaps, and superior properties such as seepage prevention, thermal insulation, and corrosion resistance.

[0020] Third, the force-measuring and early warning bricks of this device, along with conventional bricks, incorporate energy-absorbing components composed of numerous energy-absorbing cells. Their unique honeycomb structure possesses relatively superior compressive strength and energy absorption characteristics, effectively absorbing the frost heave force of the soil after lining and ensuring the stability of the lining structure. When the soil expands after lining, due to the negative Poisson's ratio effect, it undergoes lateral contraction along a direction perpendicular to the load, generating a "tensile expansion" effect that strengthens the mechanical properties at the compression point. This structure replaces elastic deformation with plastic deformation, fully utilizing the material's plasticity to achieve the structure's self-reinforcing performance and effectively reducing the impact of soil frost heave force on the slope.

[0021] Fourth, the heating pipes embedded in the soil can convert the electrical energy stored in the solar storage battery into heat energy, which heats and insulates the soil after lining, preventing damage such as bulging and instability of the lining structure caused by soil frost heave, while saving manpower and material resources.

[0022] Fifth, the solar panels and solar batteries of this device solve the problem of the inability to stably provide conventional power in uninhabited permafrost areas. When the temperature drops at night and the soil frosts, they can provide power to the heating pipes in time to heat and insulate the soil, achieving a green, environmentally friendly and energy-saving effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the in-situ measurement device for frost heave force on frozen soil slopes;

[0024] Figure 2 This is a structural diagram of the brick body;

[0025] Figure 3 This is a structural schematic diagram of the energy-absorbing component;

[0026] Figure 4 This is a schematic diagram of the structure of an energy-absorbing cell body;

[0027] Figure 5 This is a structural diagram of the force-measuring and early warning brick;

[0028] Figure 6 This is a structural diagram of a conventional brick;

[0029] The labels in the attached diagram are as follows: 1. Force-measuring warning brick; 11. Force-measuring fiber optic cable; 12. Solar warning light; 2. Conventional brick; 3. Brick body; 31. Energy-absorbing component; 311. Energy-absorbing cell; 32. XPC insulation board; 33. Concrete layer; 34. Elastic adhesive; 4. Heating tube; 5. Solar battery; 6. Solar panel; 71. Hall sensor; 72. Magnet. Detailed Implementation

[0030] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, this utility model provides an in-situ measurement device for frost heave force of frozen soil slope, including force-measuring and warning bricks 1 and conventional bricks 2 laid outside the frozen soil slope, with the conventional bricks 2 arranged around the force-measuring and warning bricks 1.

[0032] like Figure 1 and 2 As shown, both the force-measuring warning brick 1 and the regular brick 2 include the brick body 3.

[0033] like Figures 2-4 As shown, the brick body 3 includes an energy-absorbing component 31. The energy-absorbing component 31 is composed of several energy-absorbing cells 311 arranged and welded together. The energy-absorbing cells 311 have a negative Poisson's ratio structure with concave sides and a hollow interior. The unique honeycomb structure of the energy-absorbing component 31 has relatively excellent compressive strength and energy absorption characteristics, effectively absorbing the frost heave force of the frozen soil slope after lining, thus ensuring the stability of the lining structure. Specifically, the wall thickness of the energy-absorbing cells 311 is 15–25 mm, preferably 20 mm, and the concave angle is 20°–30°. When the soil expands after lining, due to the negative Poisson's ratio effect, lateral contraction occurs along the direction perpendicular to the load, producing a "tensile expansion" effect, which strengthens the mechanical properties at the compression point. This structure uses plastic deformation instead of elastic deformation, fully utilizing the plasticity of the material to achieve the self-reinforcing performance of the structure.

[0034] like Figure 5 As shown, the force-measuring early warning brick 1 also includes a force-measuring optical fiber 11. The force-measuring optical fiber 11 is located at the bottom of the force-measuring early warning brick 1, in contact with the frozen soil slope, and is used to measure the frost heave force of the frozen soil slope. The force-measuring optical fiber 11 directly contacts the soil, accurately measuring the magnitude of the frost heave force of the slope soil in situ. The force-measuring optical fiber 11 has superior tensile and compressive strength, can withstand the large diurnal temperature difference in frozen soil areas, is corrosion-resistant, has good chemical stability, and precise data transmission capabilities, effectively reducing the impact of soil frost heave force on the slope.

[0035] This device reduces the damage to the brick body 3 caused by frost heave by setting energy-absorbing components 31 in the force-measuring warning brick 1 and the conventional brick 2. At the same time, a force-measuring optical fiber 11 is set at the bottom of the force-measuring warning brick 1 to realize the measurement of frost heave.

[0036] Specifically, the bottom of the force-measuring warning brick 1 has a ring of fine striped grooves along the side, and the force-measuring optical fiber 11 is embedded in the grooves.

[0037] like Figure 2As shown, the brick body 3 also includes an XPC insulation board 32 fixed to the lower side of the energy-absorbing component 31. The XPC insulation board 32 has the characteristics of high thermal resistance, low linear expansion, and low expansion ratio, and its thermal insulation performance is long-lasting and stable. At the same time, it has extremely high compressive strength, strong impact resistance, extremely low water absorption, stable molecular structure, no gaps, and excellent properties such as seepage prevention, thermal insulation, and corrosion resistance.

[0038] The brick body 3 also includes a concrete layer 33 poured on the upper side of the energy-absorbing component 31.

[0039] The outer side of the energy-absorbing component 31 is filled with a ring of elastic adhesive 34 to prevent rainwater from seeping into the brick body 3. The elastic adhesive 34 is a flexible material.

[0040] like Figure 1 As shown, in a preferred embodiment, the brick body 3 is hexagonal. Hexagonal brick lining features a compact structure and good stability. Its hexagonal design allows the bricks to be closely arranged, effectively reducing gaps and improving the overall stability of the slope. It also helps to disperse slope stress and reduce the risk of landslides.

[0041] like Figure 1 As shown, the device also includes a heating pipe 4. The heating pipe 4 is embedded in the frozen soil slope to heat it. When the measured frost heave force is large, the heating pipe 4 embedded in the soil is controlled to generate heat, thus insulating the lining soil and preventing damage such as heaving and instability of the lining structure caused by frost heave. Within the design range, the heating power of the heating pipe 4 is gradually increased according to the magnitude of the frost heave force.

[0042] The device also includes a solar battery 5 and a solar panel 6. The solar battery 5 powers the heating element 4. The solar panel 6 is installed on the surface of the frozen soil slope and is electrically connected to the solar battery 5. The solar panel 6 is used to convert solar energy into electrical energy and store it in the solar battery 5.

[0043] like Figure 5 As shown, in a preferred embodiment, the force-measuring warning brick 1 further includes a solar-powered warning light 12. The solar-powered warning light 12 is installed on the outer surface of the force-measuring warning brick 1. The solar-powered warning light 12 has a light-emitting warning function; when the measured frost heave force is large, the solar-powered warning light 12 is controlled to light up to serve as a warning.

[0044] like Figure 5 and Figure 6As shown, the device also includes an inter-block displacement sensor assembly. This assembly is positioned between adjacent force-measuring warning bricks 1 and regular bricks 2. The inter-block displacement sensor includes a Hall sensor 71 and a magnet 72. The Hall sensor 71 is fixed to the side of the force-measuring warning brick 1, and the magnet 72 is fixed to the side of the regular brick 2; the Hall sensor 71 and magnet 72 are positioned opposite each other. The inter-block displacement sensor assembly is used to measure the displacement between adjacent force-measuring warning bricks 1 and regular bricks 2. Specifically, it utilizes magnetic flux measurement technology, detecting changes in the magnetic field and converting them into electrical signals, which are then converted into the displacement between force-measuring warning bricks 1 and regular bricks 2 using a calibration curve. This is existing technology and will not be elaborated further. When the displacement is large, manual intervention is required, i.e., replacing the force-measuring warning bricks 1 and regular bricks 2 in the corresponding area.

[0045] The construction and use method of the in-situ frost heave force measurement device for frozen soil slopes is as follows: After determining the laying location and quantity, ensure the laying site is relatively flat and free of obvious unevenness. Apply a layer of mortar, preferably 2-3 cm thick, to the laying location. Use hexagonal block paving technology to protect the frozen soil slope, ensuring the blocks are closely spaced. Apply a thin layer of mortar between the blocks to effectively reduce gaps and improve the overall stability of the frozen soil slope. The heating pipe 4 is pre-embedded in the soil of the frozen soil slope. When the force-measuring fiber optic cable 11 detects a large frost heave force, the heating pipe 4 is activated to heat and insulate the soil. The heating pipe 4 is powered by the electrical energy stored in the solar battery 5, which is connected to the solar panel 6, which is installed on the slope surface.

[0046] In use, when the frost heave force measured by the force-measuring fiber optic cable 11 is large, causing the force-measuring warning brick 1 and the conventional brick 2 to bulge as a whole without displacement, the solar warning light 12 is activated to serve as a warning. Simultaneously, the heating pipe 4 is activated to heat the frozen soil slope and alleviate frost heave. When the displacement measured by the inter-block displacement sensor assembly exceeds half the thickness of the brick (i.e., local bulging of the brick causes interlocking failure), manual intervention is required to replace the force-measuring warning brick 1 and the conventional brick 2 in the bulging area.

[0047] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0048] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An in-situ measurement device for frost heave force on frozen soil slopes, characterized in that: This includes force-measuring and early warning bricks and conventional bricks laid outside the frozen soil slope, with the conventional bricks arranged around the force-measuring and early warning bricks. Both the force-measuring and early warning bricks and the conventional bricks include the brick body; The brick body includes an energy-absorbing component; The energy-absorbing component is composed of a plurality of energy-absorbing cells arranged in a manner; the energy-absorbing cells are negative Poisson's ratio structures with concave sides and hollow interiors. The force-measuring and early warning brick also includes a force-measuring optical fiber; the force-measuring optical fiber is set at the bottom of the force-measuring and early warning brick and contacts the frozen soil slope to measure the frost heave force of the frozen soil slope.

2. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: The brick body also includes an XPC insulation board fixed to the lower side of the energy-absorbing component.

3. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: The brick body also includes a concrete layer poured on the upper side of the energy-absorbing component.

4. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: The outer side of the energy-absorbing component is filled with a ring of elastic adhesive.

5. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: The brick body is hexagonal in shape.

6. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: It also includes heating elements; The heating pipe is buried in the frozen soil slope and can heat the frozen soil slope.

7. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 6, characterized in that: It also includes solar batteries and solar panels; The solar battery supplies power to the heating element; The solar panel is installed on the surface of the frozen soil slope and is electrically connected to a solar storage battery. The solar panel is used to convert solar energy into electrical energy and store it in the solar storage battery.

8. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: The force-measuring and early warning brick also includes a solar-powered warning light; The solar-powered warning light is installed on the outer surface of the force-measuring and warning brick.

9. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: It also includes inter-block displacement sensor components; The inter-block displacement sensor assembly is disposed between adjacent force-measuring and early warning bricks and conventional bricks; The inter-block displacement sensor includes a Hall sensor and a magnet; the Hall sensor is fixed to the side of the force-measuring and early warning brick, and the magnet is fixed to the side of the conventional brick, with the Hall sensor and the magnet arranged opposite to each other.

10. The in-situ measurement device for frost heave force of frozen soil slopes according to claim 1, characterized in that: The bottom of the force-measuring and early warning brick has a groove along its side, and the force-measuring optical fiber is embedded in the groove.

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