Emergency plugging device and emergency plugging method for preventing flowing soil from diffusing

Abstract

The invention discloses an emergency plugging device and method for preventing flowing soil from diffusing. The device comprises an underground plugging assembly and an overground control assembly. The underground plugging assembly comprises a plugging framework and an air bag body, the plugging framework comprises an upper cover plate, metal supporting rods, a lower cover plate and a metal conical head, hose through holes are formed in the upper cover plate, the lower cover plate is fixedly connected with the metal conical head, the metal supporting rods are distributed at intervals in the circumferential direction, and the upper ends of the metal supporting rods are fixedly connected with the upper cover plate. The lower end is inserted into the lower cover plate; the air bag body is located in a space defined by the multiple metal supporting rods. The overground control assembly comprises a hose, one end of the hose is connected with the air bag body, the other end of the hose is connected with the high-pressure pump, an inflation valve and an air pressure controller are further arranged on the hose, and the control system is connected with the air pressure controller and the high-pressure pump. The emergency plugging method adopting the device can effectively slow down the damage speed of the flow soil and control the damage range of the flow soil.

Description

Technical Field

[0001] The invention belongs to the technical field of soil flow damage prevention and control, and particularly relates to an emergency plugging device and an emergency plugging method for preventing soil flow from spreading. Background Art

[0002] In the field of civil engineering, the prevention and control of soil flow in foundation pits, especially deep foundation pits, has always been a major challenge for engineers. Soil flow is characterized by frequent occurrence and severe destructiveness, especially in key areas such as soft foundations, high fills and slopes, making the prevention and control of soil flow a core issue to ensure engineering safety and environmental protection. Under the action of seepage force, particles in the soil are lost because the buoyancy is greater than their own weight. This can occur in both clay and non-clay soils. Under the action of seepage force, when the effective stress between particles is zero, the particle group becomes suspended and moves, and soil flow occurs. This imbalance often triggers a series of chain damages.

[0003] In current civil engineering practice, the limitations of soil flow prevention and control technology are mainly reflected in three aspects: construction period, control effect and control cost. First, the disadvantage of a long construction period is that it cannot meet the demand for rapid response to soil flow damage. In many cases, soil flow damage is characterized by suddenness and rapid development, and the long construction time will cause irreversible damage during the implementation of prevention and control measures. The long construction time not only affects the prevention and control efficiency, but also increases the risk of soil flow damage. Therefore, the improvement of soil flow prevention and control technology needs to focus on the convenience and timeliness of construction. The development of rapid construction technology, such as on-site assembly of prefabricated components and mechanized construction, can significantly shorten the construction period and improve the emergency response capability of prevention and control measures.

[0004] Secondly, the treatment effect is not ideal, especially when facing large-scale soil flow damage, traditional treatment technology is more limited. Soil flow damage often involves complex geological conditions. Traditional methods such as foundation reinforcement and precipitation have the risk of failing to achieve the expected treatment effect due to the geological conditions not being consistent with the design. Soil flow treatment urgently needs innovative prevention and control technologies and methods.

[0005] Furthermore, soil flow damage is sudden, and most soil flow damage requires emergency treatment, which invisibly increases the treatment cost. For large-scale soil flow control projects, the high cost of control is not within the project budget, which will significantly increase the cost of project construction. In the case of limited project costs, the implementation of treatment measures may not be thorough or completely impossible. The key is to reduce the overall cost of the treatment project through technological innovation and material optimization. At the same time, we should explore and promote prevention and control models that combine economic and environmental benefits, such as green construction and the use of sustainable materials, to reduce the economic burden of the project and improve the effectiveness and sustainability of the control project.

[0006] In view of this, the innovation and optimization of prevention and control technology is particularly important. Although traditional measures such as soil flow outlet reinforcement, precipitation, and slope foot reinforcement have their application scenarios, they face bottlenecks such as complex construction, high cost, and limited effect. Therefore, there is an urgent need for a method that is fast-acting, low-cost, highly applicable, and highly stable for the prevention and control of soil flow. Summary of the invention

[0007] The present invention provides an emergency plugging device and an emergency plugging method for preventing soil flow from spreading, which can effectively slow down the speed of soil flow and control the damage range of soil flow.

[0008] In order to solve the above technical problems, the present invention proposes an emergency plugging device for preventing soil flow from spreading, including an underground plugging component and an above-ground control component;

[0009] The underground plugging assembly includes a plugging frame and an airbag body, the plugging frame includes an upper cover plate, a metal support rod, a lower cover plate and a metal conical head connected in sequence from top to bottom, the upper cover plate is provided with a hose through hole, the lower cover plate is fixedly connected to the large diameter end of the metal conical head, the metal support rods are spaced along the circumferential direction, the upper ends of the metal support rods are fixedly connected to the upper cover plate, and the lower ends of the metal support rods are plugged into the lower cover plate; the airbag body is located in a space surrounded by a plurality of metal support rods;

[0010] The ground control component includes a hose, one end of which is connected to the airbag body, and the other end of the hose is connected to the high-pressure pump. The hose is also provided with an inflation valve and an air pressure controller, and also includes a control system, which is connected to the air pressure controller and the high-pressure pump.

[0011] Furthermore, the airbag body is a hollow cylinder composed of a plurality of axially stacked and connected airbags, each of which is provided with a central hole, the central holes of the plurality of airbags are connected to form an inflation channel located in the center of the airbag body, and the bottom end of the central hole of the lowest airbag is closed;

[0012] Furthermore, the airbag is provided with a plurality of air chambers separated from each other, an airbag valve is provided on the inner side of each air chamber, and the airbag valve is connected to the central hole of the airbag.

[0013] Preferably, the plurality of air chambers are distributed along the circumference of the airbag.

[0014] Preferably, the airbag valve includes a valve housing, with two ends of the valve housing being an air inlet and an air outlet, respectively, the diameters of the air inlet and the air outlet decreasing from the outside to the inside, an inlet soft plug is provided at the air inlet, the circumferential surface of the inlet soft plug is a conical surface that can fit with the air inlet, and an outlet soft plug is provided at the air outlet, the circumferential surface of the outlet soft plug is a conical surface that can fit with the air outlet; the inner end of the inlet soft plug and the inner end of the outlet soft plug are respectively connected to the fixed block in the valve housing through springs.

[0015] Preferably, a thin film pressure sensor is fixed to the outer side surface of the airbag, and the thin film pressure sensor is connected to the control system signal.

[0016] Furthermore, a thin film pressure sensor is arranged on the outer side of each air chamber.

[0017] Preferably, a plurality of support rod thread grooves are provided on the lower surface of the upper cover plate, a threaded joint is provided on the upper end of the metal support rod, and the threaded joint is threadedly connected to the support rod thread groove; a support rod slot is provided on the upper surface of the lower cover plate, a plug joint is provided on the lower end of the metal support rod, and the plug joint is plugged into the support rod slot.

[0018] Preferably, the end face of the large diameter end of the metal conical head is provided with a threaded head, the lower surface of the lower cover plate is provided with a conical head thread groove, and the metal conical head is threadedly connected with the conical head thread groove via the threaded head.

[0019] The present invention also proposes an emergency plugging method for preventing soil flow from spreading, using the emergency plugging device, comprising the following steps:

[0020] Step 1: Select different numbers and sizes of air bags for use according to the on-site soil flow speed and scale; when the scale of soil flow is large, use multiple devices to form a blocking surface at the underground soil flow location;

[0021] Step 2: driving a single or multiple underground plugging components into the location where soil flow occurs;

[0022] Step 3: Pull out the upper cover and the connected metal support rod;

[0023] Step 4: Use a high-pressure pump to inflate the air chamber through a hose, so that the airbag expands rapidly and gradually increases the air pressure inside the airbag to reach the check threshold of the airbag valve;

[0024] Step 5: According to the real-time pressure data sent back by the thin film pressure sensor, the air pressure in the bag is regulated in real time by the air pressure controller;

[0025] Step 6: After the air pressure in the bag is stable, remove the high-pressure pump and pour concrete mixed with accelerator and early strength agent into the inflation channel of the air bag through a hose to form an emergency blockage for convection soil.

[0026] The beneficial effects achieved by the present invention are:

[0027] (1) Rapid deployment and response: The design of the device takes into account the suddenness and urgency of soil flow damage, and its rapid deployment capability is one of its significant advantages. The device can be quickly implanted in the area where soil flow occurs using hammering technology, and the rapid expansion of the airbag can effectively block the flow path of soil flow in a short time. This rapid response capability provides a critical time window for subsequent construction and problem solving, greatly improving the efficiency of emergency response to damage and reducing the losses that may be caused by damage.

[0028] (2) Efficient prevention: The device achieves a dynamic balance of pressure inside and outside the airbag through precise air pressure control technology. This innovative mechanism significantly improves the containment effect of soil diffusion. The precise regulation of air pressure ensures the stability of the blocking structure, thereby effectively preventing the further spread of soil and creating favorable conditions for subsequent control work.

[0029] (3) Structural reinforcement: While blocking the flowing soil, concrete is poured into the airbag, which not only enhances the overall strength of the blocking structure, but also greatly improves its stability. This structural reinforcement measure enables the prevention and control device to withstand external soil pressure for a long time, ensuring the durability of the prevention and control effect.

[0030] (4) Convenient construction: The device has a simplified design, compact structure, and intuitive and easy-to-understand operation process, which greatly reduces the technical requirements and costs of on-site construction. This convenient construction feature enables the installation and deployment of the device to be completed quickly and effectively even under complex and harsh on-site conditions, thereby improving overall construction efficiency.

[0031] (5) Environmentally friendly: In addition, the device also embodies an environmentally friendly design concept. By reducing soil loss and environmental pollution caused by soil flow, the device helps maintain ecological balance and meets the requirements of green construction and sustainable development.

[0032] (6) Strong adaptability: The device can adapt to a variety of geological conditions and soil types. Whether it is a soft foundation or a high fill area, it can play its preventive and control role, demonstrating its wide applicability.

[0033] (7) Economical: Compared with traditional soil flow control methods, this device has obvious advantages in cost-effectiveness. It has fast construction speed and low maintenance cost. In the long run, it can save a lot of control costs for engineering projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the overall structure of the emergency plugging device of the present invention;

[0036] Figure 2 It is a structural explosion diagram of the blocking skeleton in the emergency blocking device of the present invention;

[0037] Figure 3 It is a structural explosion diagram of the airbag body in the emergency plugging device of the present invention;

[0038] Figure 4 It is a structural schematic diagram of the airbag valve in the emergency plugging device of the present invention;

[0039] Figure 5 It is a schematic diagram of the principle of the emergency plugging method of the present invention;

[0040] In the figure: 1. Underground plugging assembly;

[0041] 21. Hose, 22. Inflatable valve, 23. Air pressure controller, 24. High pressure pump, 25. Control system;

[0042] 31. Hose through hole, 32. Upper cover plate, 33. Metal support rod, 34. Lower cover plate, 35. Metal conical head, 36. Support rod thread groove, 37. Support rod clamping groove, 38. Conical head thread groove, 39. Threaded head;

[0043] 41. Hose air inlet, 42. Airbag, 43. Thin film pressure sensor, 44. Air chamber, 45. Airbag valve;

[0044] 51. inlet soft plug, 52. spring, 53. valve housing, 54. outlet soft plug, 55. fixing block;

[0045] 100. Underground blocking position, 200. Ground control components, 300. Flowing soil. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0047] Example 1

[0048] like Figure 1As shown, an emergency plugging device for preventing the spread of fluid soil includes an underground plugging component 1 and a ground control component, wherein the ground control component includes a hose 21, an inflation valve 22, an air pressure controller 23, a high-pressure pump 24 and a control system 25, the hose 21 is connected to the underground plugging component 1, the inflation valve 22, the air pressure controller 23 and the high-pressure pump 24 are arranged on the hose 21, and the control system 25 is connected to the high-pressure pump 24 and the air pressure controller 23 to control the inflation of the device and adjust the air pressure.

[0049] The underground plugging assembly 1 includes a plugging frame and an air bag body arranged in the plugging frame, and the air bag body is connected to the hose 21.

[0050] like Figure 2 As shown, the blocking skeleton includes an upper cover plate 32, a lower cover plate 34, a metal support rod 33 and a metal conical head 35. The upper cover plate 32 and the lower cover plate 34 are circular plates of equal diameter, wherein a hose through hole 31 is provided at the center of the upper cover plate 32 for the hose 21 to pass through, and a conical head thread groove 38 is provided on the lower surface of the lower cover plate 34, and an internal thread is processed for connecting the metal conical head 35. The upper surface diameter of the metal conical head 35 is equal to the diameter of the lower cover plate 34, and a thread head 39 is provided at the center of the upper surface of the metal conical head 35, and the thread head 39 is threadedly connected to the conical head thread groove 38 to achieve a fixed connection between the metal conical head 35 and the lower cover plate 34. The metal support rods 33 are provided in plurality, and both ends of the metal support rods 33 are respectively connected to the upper cover plate 32 and the lower cover plate 34 , and the metal support rods 33 are evenly distributed between the upper cover plate 32 and the lower cover plate 34 along the circumferential direction; in this embodiment, 6 metal support rods 33 are provided. There are many ways to connect the metal support rod 33 and the upper cover plate 32 or the lower cover plate 34. In this embodiment, the metal support rod 33 is plugged into the lower cover plate 34 and threadedly connected to the upper cover plate 32. For this purpose, the edge of the lower surface of the upper cover plate 32 is evenly spaced with a plurality of support rod thread grooves 36, and the edge of the upper surface of the lower cover plate 34 is evenly spaced with a plurality of support rod clamping grooves 37, and the support rod thread grooves 36 and the support rod clamping grooves 37 correspond to each other up and down. The upper end of the metal support rod 33 is processed with a threaded joint that can be threadedly connected to the support rod thread groove 36, and the lower end of the metal support rod 33 is provided with a plug joint. The metal support rod 33 is plugged into the support rod clamping groove 37 on the lower cover plate 34 through the plug joint, and is threadedly connected to the support rod thread groove 36 on the upper cover plate 32 through the threaded joint. Thus, a blocking skeleton capable of accommodating the airbag body is formed, and the airbag body is located in the cage space surrounded by the plurality of metal support rods 33.

[0051] Preferably, the upper cover plate 32, the lower cover plate 34, the metal support rod 33 and the metal conical head 35 are all made of alloy metals with high strength, large elastic modulus and strong corrosion resistance.

[0052] The main function of the blocking skeleton is to implant the airbag into the underground location where soil flow blocking is required. After the blocking skeleton completes the implantation of the airbag, the upper cover plate 32 and the metal support rod 33 can be pulled out together by connecting a traction rope to the upper cover plate 32 so that they can be recycled and at the same time avoid hindering the outward expansion of the airbag. The lower cover plate 34 and the metal support rod 33 are plugged in and can be separated by themselves after being stressed, so the lower cover plate 34 and the metal cone head 35 remain underground.

[0053] like Figure 3 As shown, the airbag body is a hollow cylindrical structure, which is formed by stacking and connecting multiple airbags 42 in sequence along the axial direction. The airbag 42 is made of elastic material, and a central hole is set at the center. After multiple airbags are stacked and connected to form the airbag body, the central holes of the airbags are connected to form an inflation channel in the center of the airbag body, and the bottom of the lowest airbag 42 in the airbag body is closed to close the bottom of the inflation channel, so that the inflation channel has only the top opening, which serves as the hose air inlet 41 and is connected to the hose 21. In practical applications, the shape of the airbag 42 can be used in different sizes according to the type and scale of the fluid. The wall of the central hole of the airbag 42 is provided with an airbag air inlet, and an airbag valve 45 is installed at the airbag air inlet. When the hose 21 delivers air to the airbag 42, the compressed gas entering the inflation channel can enter the interior of the airbag 42 through the airbag valve 45, so that the airbag 42 expands. Preferably, the elasticity of the inner circumference of the airbag 42 is lower than that of the outer circumference of the airbag 42, so that after the airbag 42 is inflated, the outward expansion amplitude is greater than the inward expansion amplitude. A thin film pressure sensor 43 is also attached to the surface of the airbag 42 to monitor the soil pressure change outside the airbag 42.

[0054] The measuring range of the film pressure sensor 43 is 0 to 10 5 kpa, control its absolute error within ±10 kpa, and the relative error is less than 0.5%. In addition, the film pressure sensor 43 also needs to have the characteristics of durability, waterproof, shock resistance, high temperature, high humidity, etc., to ensure that it can operate stably and reliably in harsh working environments. Selecting a suitable film pressure sensor is the key to ensuring the stable and accurate operation of the system.

[0055] The control principle of the pressure inside the airbag 42 is: the air pressure inside the airbag is appropriately greater than the external soil pressure to ensure that the airbag 42 can withstand the external soil pressure and the pressure inside the airbag will not burst the airbag 42. The film pressure sensor 43 transmits the soil pressure data back to the control system 25. After receiving the electrical signal from the control system 25, the air pressure controller 23 fills the airbag 42 with air, monitors the air pressure inside the airbag, and transmits the air pressure data inside the airbag back to the control system 25.

[0056] The soil flow pressure and the action surface of the air bag can be approximately regarded as a vertical plane for calculation. The output air pressure of the air pressure controller 23 is P (Formula 1). When the safety factor k is less than 1.4, the air pressure controller 23 will open the inflation valve 22 and fill it with air. When the safety factor is greater than 1.6, the air pressure controller 23 will close the inflation valve 22. The film pressure sensor 23 is responsible for monitoring whether the external soil flow pressure changes linearly along the depth. If it is detected that the external soil flow pressure changes significantly due to the flow effect, the air pressure controller 23 will promptly increase the air pressure in the bag to ensure that the device can safely block the underground soil flow.

[0057] P = kγ s h (1)

[0058] Where: P is the output pressure of the air pressure controller (P a );

[0059] γ s It is the weight of soil;

[0060] h is the depth of flowing soil (m);

[0061] k is the safety factor, Where P is the air pressure inside the bag, and P1 is the flowing soil pressure transmitted back by the bottom film pressure sensor.

[0062] Furthermore, the airbag 42 has a plurality of air chambers 44 which are circumferentially distributed and isolated from each other. The air chamber 44 is a fan-shaped cavity. The inner circumferential surface of each air chamber 44 is provided with the airbag air inlet and the airbag valve 45 .

[0063] By setting up multiple air bags and multiple air chambers, the inflation speed of the entire air bag body can be increased, thereby improving the sealing efficiency and meeting the needs of emergency sealing of convective soil.

[0064] Preferably, the outer side of each air chamber 44 is provided with the thin film pressure sensor 43 .

[0065] The airbag valve 45 has two functions: one is to serve as an inflation port for the corresponding air chamber 44; the other is to form a check valve when the airbag 42 is damaged, and to prevent gas leakage in the air chamber 44 when the airbag 42 is not damaged.

[0066] like Figure 4As shown in FIG. 1 , the structure of the airbag valve 45 includes a valve housing 53, a spring 52, an inlet plug 51 and an outlet plug 54. The air inlet of the airbag valve 45 is provided with an inlet plug 51, and the air outlet of the airbag valve 45 is provided with an outlet plug 54. Figure 4 For example, the airbag valve 45 has an air inlet on the left side, and the corresponding soft plug is an inlet soft plug 51. The airbag valve 45 has an air outlet on the right side, and the corresponding soft plug is an outlet soft plug 54. The air inlet and the air outlet of the airbag valve 45 are both set to reduce in diameter from the outside to the inside, that is, the diameter decreases from the outside to the inside, and the circumferential surfaces of the inlet soft plug 51 and the outlet soft plug 54 are conical surfaces. The inner end of the inlet soft plug 51 is fixedly connected to one end of a spring 52, and the other end of the spring 52 is fixedly connected to a fixed block 55 in the airbag valve 45. The inner end of the outlet soft plug 54 is fixedly connected to one end of another spring 52, and the other end of the spring 52 is fixedly connected to the fixed block 55. Therefore, the two springs 52 are respectively located on both sides of the fixed block 55, and the two springs 52 are springs with high elastic modulus.

[0067] Through the multi-air chamber layout and the setting of the airbag valve 45 structure, when an air chamber 44 is damaged due to a harsh external environment, the corresponding airbag valve 45 will automatically close, and the device will stop supplying air to the damaged air chamber 44, but other air chambers 44 of the same airbag 42 can still work normally, avoiding the airbag 42 from losing its working ability.

[0068] The working process of the airbag is described below: the high-pressure pump 24 is turned on through the control system 25, and the airbag 42 is inflated using the hose 21, the air pressure in the bag is increased at a uniform speed, and the pressure difference on both sides of the airbag valve 45 is controlled to be always lower than 0.8 times the check threshold to prevent the airbag valve 45 from being blocked before the inflation is completed. When the high-pressure pump 24 inflates the airbag 42, if a certain air chamber 44 is suddenly damaged, the strong internal and external pressure difference will trigger the check threshold of the airbag valve 45 on the damaged air chamber 44, and the inlet soft plug 51 overcomes the elastic force of the spring 52 under the action of the atmospheric pressure difference, and moves to the right along the airflow direction until the conical surface of the inlet soft plug 51 fits with the air inlet of the airbag valve 45, blocking the air inlet to prevent the airflow in the hose 22 from entering the damaged air chamber 44 again. After the airbag 42 is inflated and the air pressure has stabilized, the external high-pressure pump 24 is removed. At this time, the strong internal and external pressure difference will also trigger the check threshold of the airbag valve 45. Under the action of the atmospheric pressure difference, the outlet plug 54 overcomes the elastic force of the spring 52 and moves to the left along the airflow direction until the conical surface of the outlet plug 54 fits with the air outlet of the airbag valve 45, thereby blocking the air outlet to prevent the air pressure in the airbag from decreasing.

[0069] Preferably, the airbag 42 is made of a material that is resistant to high temperature, corrosion, elastic and strong, such as polytetrafluoroethylene (PTFE), vinyl acrylate copolymer (EVM), fluororubber (FKM), and polyester elastomer (PET). These materials can maintain stable performance in high temperature, high pressure and corrosive environments, and have excellent sealing and waterproof capabilities. At the same time, the airbag is designed as a multi-layer structure or is screened to increase its strength and stability.

[0070] When the device is used to seal the convection soil, the underground sealing component is quickly driven into the ground by hammering. During this process, the cage structure composed of the metal support rods 33 can protect the airbag 42 from damage. After the implantation is completed, the upper cover plate 32 and the six connected metal support rods 33 are pulled out, and the airbag 42 is inflated by the hose 21 through the ground control component to make the airbag 42 expand. Finally, concrete can be poured into the central channel of the airbag 42 through the hose 21 to enhance the strength and stability of the sealing structure.

[0071] Example 2

[0072] An emergency plugging method for preventing soil flow from spreading, the method using the emergency plugging device described in Example 1, comprising the following steps:

[0073] Step 1: Select different numbers and sizes of air bags 42 for use according to the speed and scale of the soil flow on site; when the scale of the soil flow is large, use multiple devices to form a blocking surface at the underground soil flow location;

[0074] Step 2: driving a single or multiple underground plugging components 1 into the location where soil flow occurs;

[0075] Step 3: Then, the upper cover plate 32 and the six metal support rods 33 are pulled out through the hemp rope connected to the upper cover plate 32;

[0076] Step 4: Use the high-pressure pump 24 to uniformly charge the gas from the hose 21 into the air chamber 44 through the airbag valves 45 of each air chamber 44, so that the airbag 42 expands rapidly and gradually increases the air pressure in the airbag to reach the check threshold of the airbag valve 45;

[0077] Step 5: According to the real-time pressure data sent back by the thin film pressure sensor 43, the air pressure in the bag is regulated in real time by the air pressure controller 23;

[0078] Step 6: After the air pressure in the bag is stable, remove the high-pressure pump 24 and pour concrete mixed with an accelerating agent and an early strength agent into the central channel of the air bag 42 through the hose 21 to increase the overall stability of the device.

[0079] In step 4, the check valve refers to the pressure threshold at which the airflow can push the inlet and outlet plugs to block the valve port when the airbag is damaged, the hose loses pressure, or other emergencies occur, resulting in excessive pressure difference on both sides of the airbag valve 45.

[0080] The status before and after blocking the diffusion of the fluid soil 300 according to the above steps can be referred to Figure 5 As shown, the device forms a blockage on the diffusion path of the fluid soil (at the underground blocking position 100 in the figure), which can effectively inhibit the fluid soil 300 from further spreading.

[0081] The emergency blocking of soil diffusion by the device of the present invention has the following characteristics:

[0082] Pressure balance: Pressure balance is one of the core functions of the soil flow prevention device. In this link, the air pressure controller 23 works with the film pressure sensor 43 to ensure the precise balance of pressure inside and outside the airbag 42. The film pressure sensor 43 is responsible for real-time monitoring of the changes in soil pressure outside the airbag 42 and transmitting the data to the control system 25. Based on these data, the control system 25 instructs the air pressure controller 23 to adjust the air pressure inside the airbag. Through this dynamic pressure regulation, the airbag 42 can adapt to changes in external soil pressure and maintain a stable shape, thereby effectively blocking the flow channel of the soil flow and preventing further diffusion of the soil flow. The key to this pressure balance mechanism lies in its rapid response and precise control, which can quickly take effect when a soil flow disaster occurs.

[0083] Structural reinforcement: The stability and durability of the overall structure are enhanced by pouring concrete into the hollow airbag 42. This step can not only increase the stability and strength of the soil flow control device, but also provide lasting support for the soil flow area. The pouring of concrete is carried out after the airbag 42 reaches pressure balance to ensure the stability of the structure. As the concrete hardens, the strength of the entire control device is further improved, and it can resist external soil pressure and achieve the purpose of controlling soil flow. In addition, the pouring of concrete can also fill the gap between the airbag 42 and the surrounding soil, enhancing the continuity and uniformity of the overall structure.

[0084] Rapid implantation: Rapid implantation is a prerequisite for the soil flow control device to play a role in a timely manner. In the key area where soil flow occurs, the cylindrical airbag 42 of the device is quickly driven into the ground by hammering. This step requires that the design of the device must be convenient for rapid construction, while ensuring that the airbag 42 is not damaged during the implantation process. After the implantation is completed, the external blocking skeleton is quickly withdrawn, and the airbag 42 is inflated through the air pressure controller 23 and the hose 21. This rapid response capability is crucial to controlling the spread of soil flow damage. It can curb the development of soil flow in the early stages of damage and gain valuable time for subsequent treatment work.

[0085] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. The terms used in the description of this application are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0086] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0087] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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 cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

Claims

1. An emergency plugging device for preventing soil flow from spreading, characterized in that: It includes underground plugging components and above-ground control components; The underground plugging assembly includes a plugging frame and an airbag body, the plugging frame includes an upper cover plate, a metal support rod, a lower cover plate and a metal conical head connected in sequence from top to bottom, the upper cover plate is provided with a hose through hole, the lower cover plate is fixedly connected to the large diameter end of the metal conical head, the metal support rods are spaced along the circumferential direction, the upper ends of the metal support rods are fixedly connected to the upper cover plate, and the lower ends of the metal support rods are plugged into the lower cover plate; the airbag body is located in a space surrounded by a plurality of metal support rods; The ground control component includes a hose, one end of which is connected to the airbag body, and the other end of the hose is connected to the high-pressure pump. The hose is also provided with an inflation valve and an air pressure controller, and also includes a control system, which is connected to the air pressure controller and the high-pressure pump.

2. The emergency plugging device for preventing soil flow from spreading according to claim 1 is characterized in that: The airbag body is a hollow cylinder composed of multiple axially stacked and connected airbags. Each airbag is provided with a central hole. The central holes of multiple airbags are connected to form an inflation channel located in the center of the airbag body, and the bottom end of the central hole of the lowest airbag is closed.

3. The emergency plugging device for preventing soil flow from spreading according to claim 2 is characterized in that: The airbag is provided with a plurality of air chambers separated from each other, and an airbag valve is provided inside each air chamber, and the airbag valve is communicated with the central hole of the airbag.

4. The emergency plugging device for preventing soil flow from spreading according to claim 3 is characterized in that: The plurality of air chambers are distributed along the circumference of the airbag.

5. The emergency plugging device for preventing soil flow from spreading according to claim 3 is characterized in that: The airbag valve includes a valve housing, and the two ends of the valve housing are respectively an air inlet and an air outlet, the diameters of the air inlet and the air outlet decrease from the outside to the inside, an inlet soft plug is arranged at the air inlet, and the circumferential surface of the inlet soft plug is a conical surface that can fit with the air inlet, and an outlet soft plug is arranged at the air outlet, and the circumferential surface of the outlet soft plug is a conical surface that can fit with the air outlet; the inner end of the inlet soft plug and the inner end of the outlet soft plug are respectively connected to the fixed block in the valve housing through springs.

6. The emergency plugging device for preventing soil flow from spreading according to claim 3 is characterized in that: A thin film pressure sensor is fixed on the outer side of the airbag, and the thin film pressure sensor is connected to the control system signal.

7. The emergency plugging device for preventing soil flow from spreading according to claim 6 is characterized in that: A thin film pressure sensor is arranged on the outer side of each air chamber.

8. The emergency plugging device for preventing soil flow from spreading according to claim 1 is characterized in that: The lower surface of the upper cover plate is provided with a plurality of support rod thread grooves, and the upper end of the metal support rod is provided with a threaded joint, and the threaded joint and the support rod thread groove are threadedly connected; the upper surface of the lower cover plate is provided with a support rod slot, and the lower end of the metal support rod is provided with a plug joint, and the plug joint and the support rod slot are plugged together.

9. The emergency plugging device for preventing soil flow from spreading according to claim 1, characterized in that: The large diameter end face of the metal conical head is provided with a threaded head, the lower surface of the lower cover plate is provided with a conical head thread groove, and the metal conical head is threadedly connected with the conical head thread groove through the threaded head.

10. An emergency blocking method for preventing soil flow from spreading, characterized in that: The emergency plugging device according to claim 6 comprises the following steps: Step 1: Select different numbers and sizes of air bags for use according to the on-site soil flow speed and scale; when the scale of soil flow is large, use multiple devices to form a blocking surface at the underground soil flow location; Step 2: driving a single or multiple underground plugging components into the location where soil flow occurs; Step 3: Pull out the upper cover and the connected metal support rod; Step 4: Use a high-pressure pump to inflate the air chamber through a hose, so that the airbag expands rapidly and gradually increases the air pressure inside the airbag to reach the check threshold of the airbag valve; Step 5: According to the real-time pressure data sent back by the thin film pressure sensor, the air pressure in the bag is regulated in real time by the air pressure controller; Step 6: After the air pressure in the bag is stable, remove the high-pressure pump and pour concrete mixed with accelerator and early strength agent into the inflation channel of the air bag through a hose to form an emergency blockage for convection soil.

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