Siphon-driven microorganism anti-liquefaction and anti-seepage injection type slope reinforcing device and construction method

Abstract

The invention discloses a siphon-driven microorganism anti-liquefaction and anti-seepage injection type slope reinforcing device and a construction method. The siphon-driven microorganism anti-liquefaction and anti-seepage injection type slope reinforcing device comprises a siphon negative pressure starting device, a water flow high-pressure gas injection device, a microorganism high-pressure injection atomization device, a microorganism liquid storage device, a gas-liquid mixing device and a soil gas injection device. The siphon negative-pressure starting device is of a Venturi structure, and the water outlet section of the siphon negative-pressure starting device is hermetically connected with the water inlet of the water flow high-pressure gas injection device in series; the water flow high-pressure gas injection device is an unpowered high-pressure gas flow generation mechanism, and the gas injection end of the water flow high-pressure gas injection device is hermetically connected in series with the microorganism high-pressure injection atomization device through a one-way gas injection assembly; the microorganism high-pressure injection atomization device is of a Venturi structure, the throat part of the microorganism high-pressure injection atomization device is hermetically communicated with the microorganism liquid storage device, and the diffusion section is connected in series with the gas-liquid mixing device; and the gas-liquid mixing device is hermetically connected with the soil gas injection device in series and is used for uniformly mixing the atomized microbial liquid and the high-pressure gas flow and then injecting the mixture into the slope soil. The siphon stability and the pipeline decontamination capacity of the slope reinforcing device can be improved.

Description

Technical Field

[0001] This invention relates to a slope reinforcement device and construction method, and more particularly to an injection-type slope reinforcement device and construction method that uses siphon-driven microorganisms to resist liquefaction and prevent seepage. Background Technology

[0002] Soil instability and slope seepage are core technical challenges in slope engineering. Soil instability manifests as a sudden drop in soil strength under its own weight, seepage, or external disturbance, leading to disasters such as landslides and collapses. Slope seepage increases pore water pressure and reduces effective stress, further exacerbating the risk of soil instability. It can also cause problems such as piping and soil erosion, seriously threatening the safety of slope engineering.

[0003] Microbial induced calcium carbonate precipitation (MICP) technology has been gradually applied to slope soil reinforcement due to its advantages of being environmentally friendly and causing minimal disturbance. Currently, there are research reports on applying MIP atomization reinforcement technology to slope engineering, such as patent number CN201910813677.X. This existing technology uses an independent high-pressure pump to drive the atomization of microbial liquid, achieving atomized injection of MIP technology, but it still has the following key technical shortcomings:

[0004] 1. Low energy utilization. Existing microbial atomization devices require additional independent power equipment such as high-pressure pumps and ultrasonic atomizers, and do not reuse the water flow impact energy of the slope drainage system, resulting in equipment redundancy and high energy consumption, which does not meet the needs of green engineering development.

[0005] 2. Poor atomization and mixing effect. In existing technologies, microbial liquid is directly injected into the soil after atomization, lacking a dedicated gas-liquid mixing enhancement device. The atomized particles and airflow are not mixed evenly, resulting in uneven penetration depth of the microbial liquid in the soil, scattered distribution of calcium carbonate precipitation, poor stability of the reinforcement effect, and difficulty in meeting the uniformity requirements of slope engineering.

[0006] In addition, traditional siphon drainage devices are closed channels, and the mud, sand and debris carried by the water flow on the slope can easily cause blockage of the channel, leading to siphon interruption and affecting drainage efficiency and the continuous operation capability of the device.

[0007] In summary, existing MIP atomization reinforcement technology suffers from low energy utilization and poor atomization mixing effect. Traditional siphon drainage devices have shortcomings in stability and cleaning capacity. Therefore, there is an urgent need to develop an integrated, energy-saving siphon-co-atomization microbial liquid reinforcement device that combines stable siphon operation, pipeline cleaning, and uniform microbial reinforcement. Summary of the Invention

[0008] Purpose of the invention: The purpose of this invention is to propose an injection-type slope reinforcement device and construction method that uses siphon-driven microorganisms to resist liquefaction and prevent seepage. By reusing the impact energy of slope water flow, it realizes the generation of high-pressure airflow without power and the atomization of microbial liquid. Combined with the gas-liquid two-phase flow design, it improves the stability of the siphon and the cleaning capacity of the pipeline.

[0009] Technical solution: The present invention includes a siphon negative pressure starting device, a water flow high-pressure air injection device, a microbial high-pressure atomization device, a microbial liquid storage device, a gas-liquid mixing device, and a soil air injection device;

[0010] The siphon negative pressure starting device is a Venturi structure, and its outlet section is sealed in series with the inlet of the high-pressure water injection device to form a gas-liquid two-phase flow and drive the water flow input.

[0011] The water flow high-pressure air injection device is a non-powered high-pressure airflow generator. Its air injection end is sealed and connected in series with the microbial high-pressure atomizing device through a one-way air injection component, which is used to convert the water flow inertia into high-pressure airflow.

[0012] The microbial high-pressure injection atomizing device has a venturi structure, with its throat sealed and connected to the microbial liquid storage device, and its diffusion section connected in series with the gas-liquid mixing device, which is used to realize negative pressure inhalation and atomization of the microbial liquid.

[0013] The gas-liquid mixing device is sealed and connected in series with the soil air injection device, and is used to inject the atomized microbial liquid into the slope soil after mixing it evenly with the high-pressure airflow.

[0014] The siphon negative pressure starting device includes an inlet section, a negative compression port section, and an outlet section arranged sequentially along the water flow direction. The inner diameter of the negative compression port section is 1 / 3 to 1 / 2 of the inner diameter of the inlet section. An air intake hole is provided on its side wall. A one-way anti-permeability air valve is installed at the air intake hole, and it is connected to the outside atmosphere through an air supply pipe. A waterproof and breathable membrane assembly is embedded at the end of the air supply pipe.

[0015] The high-pressure water injection device includes a U-shaped pipe, a water-lifting valve, a water-draining valve, an air-replenishing component, and an air-injection component. The U-shaped pipe is divided into a drainage side section, a bottom connecting section, and a return side section. The water-lifting valve is a one-way valve located at the bottom of the drainage side section. The water-draining valve is a one-way valve located at the top of the return side section. The air-replenishing component is a one-way air inlet valve located at the top of the drainage side section. The air-injection component is equipped with an exhaust check valve, which is offset from the air-replenishing component and located at the top of the drainage side section.

[0016] The microbial high-pressure atomization device includes an integrally formed atomization contraction section, an atomization throat, and an atomization diffusion section. The atomization throat has a liquid suction port on its side wall. A self-sealing elastic micro-slit membrane is embedded inside the liquid suction port. Micro-slits are pre-made on the surface of the membrane. When there is no negative pressure, the micro-slits close naturally. When subjected to negative pressure, the elastic deformation causes the micro-slits to open.

[0017] The microbial liquid storage device includes a storage tank, an infusion pipe and a flow regulating valve. One end of the infusion pipe is connected to the bottom of the storage tank, and the other end is sealed to the suction port of the atomizing throat. The flow regulating valve is connected in series with the infusion pipe.

[0018] The gas-liquid mixing device includes a cylindrical sealed cavity and a spiral guide vane. The spiral guide vane extends spirally along the inner wall of the cavity and has an anti-adhesion groove on its surface.

[0019] The soil aeration device has a folded tube structure with 3-6 inclined nozzles evenly distributed around its side wall. The nozzle ends are equipped with anti-clogging filters, and the inclination direction of the nozzles forms an angle of 30-60° with the axis of the soil aeration device.

[0020] The bottom connecting section of the U-shaped pipe adopts an arc transition structure. The opening pressure of the water pumping valve is less than the closing pressure of the drain valve. The air channels of the air supply component and the air injection component are independent of each other and are both equipped with a one-way sealing structure. The water inlet pipe of the U-shaped pipe is sealed to the water outlet section of the siphon negative pressure starting device. The drain outlet is located at the bottom of the drain side pipe section.

[0021] The self-sealing elastic micro-slit diaphragm has an elastic modulus of 1.5-3 MPa, a prefabricated micro-slit width of 0.1-0.3 mm, and 3-5 micro-slits distributed radially.

[0022] A construction method for an injection-type slope reinforcement device with siphon-driven microbial anti-liquefaction and seepage prevention includes the following steps:

[0023] 1) Device pre-embedding: The siphon negative pressure starting device is pre-embedded inside the slope, its inlet section is connected to the slope drainage outlet, and its outlet section is sealed and connected to the inlet of the water flow high pressure air injection device. The soil air injection device is inserted into the slope at the preset depth, each device is fixed and the sealing performance is checked.

[0024] 2) Microbial liquid preparation: Add the prepared microbial solidification slurry to the storage tank of the microbial liquid storage device, and adjust the flow regulating valve to the preset opening degree;

[0025] 3) Siphon start: The slope water flows into the inlet section of the siphon negative pressure start device, forming a negative pressure in the negative compression port section. The one-way anti-seepage air valve opens, and the outside atmosphere enters the flow channel to form a gas-liquid two-phase flow, driving the water flow to continuously enter the water flow high-pressure air injection device.

[0026] 4) High-pressure airflow generation: The water flow high-pressure air injection device works in a cycle of "water injection acceleration → drain valve closure → water flow inertia conversion to high pressure → drainage + high-pressure airflow output → pressure drop and reset", continuously generating high-pressure airflow and delivering it to the microbial high-pressure atomization device.

[0027] 5) Microbial liquid atomization and mixing: After the high-pressure airflow is accelerated through the atomization contraction section, a negative pressure is formed at the atomization throat. The self-sealing elastic micro-slit membrane opens, the microbial liquid is drawn in and atomized by the airflow shearing. The atomized microbial liquid and the high-pressure airflow enter the gas-liquid mixing device, and are guided by the spiral guide plate to form a swirling mixing. The anti-adhesion tank prevents the atomized particles from adhering.

[0028] 6) Soil injection: The uniformly mixed atomized microbial liquid and high-pressure airflow are injected into the slope soil through the inclined nozzle of the soil injection device to complete the anti-liquefaction and seepage prevention reinforcement.

[0029] Beneficial effects: This invention has the following advantages:

[0030] (1) Powerless integrated design: Reuse the impact energy of slope water flow, without the need for additional power equipment such as high pressure pumps and ultrasonic atomizers. Through the synergistic effect of U-shaped pipe and siphon negative pressure starting device, the integrated operation of "drainage-air injection-atomization-reinforcement" is realized, saving energy and reducing consumption, and is suitable for outdoor power-free scenarios;

[0031] (2) High mixing uniformity: The microbial liquid is quantitatively atomized through the Venturi structure of the microbial high-pressure injection atomization device. Combined with the spiral guide plate of the gas-liquid mixing device and the swirling mixing design of the anti-adhesion tank, the atomized particles have uniform particle size and are fully mixed with the airflow. After being injected into the soil, they penetrate evenly, and the calcium carbonate precipitate is densely distributed, resulting in a significant reinforcement effect.

[0032] (3) Strong siphon stability: The gas-liquid two-phase flow design of the siphon negative pressure start-up device not only improves the anti-interference ability of siphon operation, but also realizes pipeline self-cleaning, effectively prevents mud and sand blockage, and extends the service life of the device;

[0033] (4) Excellent sealing and leak-proof performance: The self-sealing elastic micro-slit diaphragm closes naturally when there is no negative pressure. Combined with the one-way valve and sealing joint, it completely solves the problem of microbial liquid leakage and avoids material waste and environmental impact.

[0034] (5) Strong versatility and practicality: It is suitable for various types of soil slopes, the construction process is simple and no complicated operation is required. The layout of the device can be adjusted according to the slope size and reinforcement requirements. The flow regulating valve can be used to adapt to different reinforcement rate requirements and reduce construction costs. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the water flow high-pressure air injection device of the present invention;

[0037] Figure 3 This is a schematic diagram of the siphon negative pressure starting device of the present invention;

[0038] Figure 4 This is a schematic diagram of the microbial high-pressure atomization device of the present invention;

[0039] Figure 5 This is a schematic diagram of the gas-liquid mixing device of the present invention;

[0040] Figure 6 This is a schematic diagram of the soil aeration device when only gas is injected using the device of the present invention;

[0041] Figure 7 This is a schematic diagram of the soil aeration device when the mixed liquid is injected into the apparatus of the present invention. Detailed Implementation

[0042] The invention will now be further described with reference to the accompanying drawings.

[0043] Example 1

[0044] like Figures 1-7 As shown, the siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device of this embodiment uses natural rainfall and surface runoff as the sole driving source. It only starts to operate when water flows in. When there is no water input, the entire system remains stationary and does not work. Its core lies in the synergistic effect of siphon negative pressure and water flow high-pressure air injection device to achieve the generation of high-pressure airflow without power, which, together with the microbial high-pressure atomization structure, completes soil reinforcement. It includes a siphon negative pressure starting device 1, a water flow high-pressure air injection device 2, a microbial high-pressure atomization device 3, a microbial liquid storage device, a gas-liquid mixing device, and a soil air injection device 4.

[0045] like Figure 2 As shown, the high-pressure air injection device 2 is the core of the non-powered high-pressure airflow generation, including a U-shaped pipe 5, a water-lifting valve 6, a water-draining valve 7, an air-replenishing component, and an air-injection component. The U-shaped pipe 5 is divided into a drainage side section, a bottom connecting section, and a return side section. The bottom connecting section adopts an arc transition structure to reduce water flow resistance. The water-lifting valve 6 is a one-way valve located at the bottom of the drainage side section for discharging water. The water-draining valve 7 is a one-way valve located at the top of the return side section and is closed by water flow inertia. The air-replenishing component is a one-way air inlet valve 21 located at the top of the drainage side section for replenishing the air in the pipe. The air-injection component is equipped with an exhaust check valve 20, which is staggered with the air-replenishing component for directional output of high-pressure airflow. The U-shaped pipe inlet pipe 19 is sealed to the outlet section 10 of the siphon negative pressure starting device, and the drain outlet 22 is located at the bottom of the drainage side section. Its working principle is as follows: after water is injected, it impacts the drain valve 7 at the bottom connecting section and closes. The inertia of the water flow is converted into high pressure. On the one hand, it opens the pumping valve 6 to drain water, and on the other hand, it compresses the gas in the pipe to form a high-pressure airflow, which is output through the exhaust check valve 20 of the air injection component. After the pressure drops, the drain valve 7 opens, completing one cycle and continuously generating high-pressure airflow.

[0046] like Figure 3As shown, the siphon negative pressure start-up device 1 adopts a Venturi effect design, consisting of an inlet section 8, a negative compression port section 9, and an outlet section 10 along the water flow direction, all three being integrally formed. The negative compression port section 9 is the smallest cross-section of the flow channel, with an inner diameter of 1 / 3 to 1 / 2 that of the inlet section 8. Air intake holes 11 are evenly distributed around the side wall, each equipped with a one-way anti-seepage valve. The air intake hole is connected to the outside atmosphere via an air supply pipe, the end of which is fitted with a waterproof and breathable membrane assembly to prevent rainwater backflow. When water flows at high speed through the negative compression port section 9, a negative pressure is formed at the throat, automatically opening the one-way anti-seepage valve. Outside air enters the flow channel and mixes with the water flow to form a gas-liquid two-phase flow, which improves the stability of the siphon operation and flushes away debris from the pipe wall, achieving self-cleaning of the pipeline.

[0047] like Figure 4 As shown, the microbial high-pressure atomizing device 3 also adopts a Venturi structure, including an atomizing contraction section, an atomizing throat, and an atomizing diffusion section, all integrally molded to ensure sealing performance. The atomizing throat has a suction port 12 on its side wall, with a self-sealing elastic micro-slit membrane embedded inside. The membrane's elastic modulus is 1.5-3 MPa, and its surface has 3-5 radial micro-slits, each 0.1-0.3 mm wide, pre-fabricated. Without negative pressure, the membrane's elasticity allows the micro-slits to close naturally, achieving a leak-proof seal. When a high-pressure airflow passes through the atomizing throat at high speed, creating negative pressure, the membrane's elastic deformation causes the micro-slits to open, allowing the microbial liquid to be quantitatively absorbed under the pressure difference and uniformly atomized through airflow shearing.

[0048] like Figure 5 As shown, the gas-liquid mixing device includes a cylindrical sealed cavity and spiral guide vanes. The spiral guide vanes extend spirally along the inner wall of the cavity, and anti-adhesion grooves 13 are formed on their surface. After the atomized microbial liquid and high-pressure airflow enter the cavity, they form a strong swirling motion under the guidance of the spiral guide vanes, achieving thorough mixing. The anti-adhesion grooves 13 can prevent atomized particles from adhering to the inner wall of the cavity, improving the uniformity of subsequent injection.

[0049] like Figure 6 and Figure 7 As shown, the soil aeration device 4 adopts a folded pipe structure, which effectively prevents the microbial liquid from settling and clogging the pipe. 3-6 inclined nozzles 18 are evenly distributed around its side wall. The nozzles 18 are at an angle of 30-60° to the axis. The end is equipped with an anti-clogging filter, which not only expands the injection coverage area, but also prevents soil particles from entering the pipe.

[0050] The microbial liquid storage device includes a storage tank 16, an infusion pipe and a flow regulating valve 17. The storage tank 16 is made of corrosion-resistant material and has an outlet at the bottom. It is sealed to the suction port 12 of the atomizing throat through the infusion pipe. The flow regulating valve 17 is connected in series on the infusion pipe to precisely control the delivery rate of the microbial liquid and adapt to different reinforcement needs.

[0051] Example 2

[0052] The construction method of the siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device in this embodiment includes the following steps:

[0053] S1. Pre-embedded device

[0054] Based on the slope topography and reinforcement requirements, determine the installation locations of the siphon negative pressure starting device and the water flow high-pressure air injection device. The siphon negative pressure starting device is pre-embedded inside the slope, with its inlet section 8 connected to the slope drainage outlet, and its outlet section 10 sealed and connected to the U-shaped inlet pipe 19 of the water flow high-pressure air injection device through a sealing joint. The soil air injection device 4 is inserted into the slope at a preset depth to ensure that the nozzle 18 is completely embedded in the soil. Each device is fixed with a bracket, and the sealing performance of all connections is checked to ensure that there is no air or water leakage.

[0055] S2. Preparation of Microbial Liquid

[0056] Add microbial solidification slurry to the storage tank 16 of the microbial liquid storage device, ensuring that the liquid level is higher than the infusion pipe interface; adjust the flow regulating valve 17 to the preset opening, and control the microbial liquid delivery rate according to the reinforcement area and the soil permeability coefficient.

[0057] S3. Siphon Start

[0058] After the slope rainfall or surface runoff generates water flow, the water flows into the inlet section 8 of the siphon negative pressure start-up device, forming a high-speed flow field in the negative compression port section 9. Negative pressure is generated at the throat, and the one-way anti-seepage air valve automatically opens. The outside atmosphere enters the flow channel and mixes with the water flow to form a gas-liquid two-phase flow, driving the water flow to continuously enter the water flow high-pressure air injection device. When the gas-liquid two-phase flow flows in the pipeline, the air bubbles continuously flush the pipe wall, carrying away mud, sand and debris, thus achieving self-cleaning of the pipeline.

[0059] S4. High-pressure airflow generation

[0060] After the water flows into the U-shaped pipe 5 of the high-pressure aeration device, it flows downward along the drainage side pipe section, enters the return side pipe section through the bottom connecting section, and impacts the drain valve 7 to close it. After the water flow is forcibly braked, its inertia is converted into high pressure. On the one hand, it opens the water discharge valve 6 to discharge part of the water through the drain outlet 22, and on the other hand, it compresses the gas in the pipe, causing the gas pressure in the pipe to rise. When the gas pressure reaches the opening threshold of the aeration component, the high-pressure airflow is output to the microbial high-pressure atomizing device 3 through the exhaust check valve 20. After the pressure in the pipe falls back, the drain valve 7 reopens under the action of gravity, and the water flow is injected again, forming a cycle and continuously generating high-pressure airflow. When a negative pressure is formed in the pipe, the one-way air inlet valve 21 automatically opens to replenish the atmosphere.

[0061] S5. Microbial liquid atomization and mixing

[0062] After the high-pressure airflow enters the atomization contraction section of the microbial high-pressure atomization device 3, it accelerates and forms a negative pressure field in the atomization throat. The self-sealing elastic micro-slit membrane deforms elastically under the pressure difference between the inside and outside, and the radial micro-slits on the surface open. The microbial liquid is quantitatively drawn into the atomization throat through the infusion pipe and the suction port 12, and undergoes shearing action with the high-speed airflow, breaking it into uniform atomized particles. The atomized microbial liquid and the high-pressure airflow enter the sealed cavity of the gas-liquid mixing device together, forming a strong swirling motion under the guidance of the spiral guide plate. The airflow and droplets collide and mix fully. The anti-adhesion tank 13 prevents the atomized particles from agglomerating and adhering, and the mixing uniformity is improved to more than 90%.

[0063] S6. Soil Injection

[0064] The mixed gas-liquid mixture is injected into the slope soil through the inclined nozzle 18 of the soil aeration device 4. The airflow carries atomized particles to penetrate into the surrounding soil, and under the action of microorganisms, calcium carbonate is precipitated, filling the soil pores and improving the soil strength and liquefaction resistance. During the injection process, the continuous moist airflow can prevent the anti-clogging filter at the end of the nozzle 18 from clogging, ensuring the continuity of the operation.

[0065] When there is no water flow into the slope, the system remains stationary and does not operate. The self-sealing elastic micro-slit membrane closes naturally, the microbial liquid stops leaking, and all one-way valves remain sealed to prevent soil particles from flowing back into the device.

Claims

1. A siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device, characterized in that, It includes a siphon negative pressure start device (1), a water flow high pressure air injection device (2), a microbial high pressure atomization device (3), a microbial liquid storage device, a gas-liquid mixing device, and a soil air injection device (4). The siphon negative pressure starting device (1) is a Venturi structure, and its outlet section (10) is sealed in series with the inlet of the water flow high pressure air injection device (2) to form a gas-liquid two-phase flow and drive the water flow input. The water flow high pressure air injection device (2) is a non-powered high pressure airflow generating mechanism. Its air injection end is sealed in series with the microbial high pressure atomizing device (3) through a one-way air injection component, which is used to convert the water flow inertia into high pressure airflow. The microbial high-pressure injection atomizing device (3) has a venturi structure, with its throat sealed and connected to the microbial liquid storage device, and its diffusion section connected in series with the gas-liquid mixing device, which is used to realize the negative pressure inhalation and atomization of the microbial liquid. The gas-liquid mixing device is sealed in series with the soil air injection device (4) and is used to inject the atomized microbial liquid into the slope soil after mixing it evenly with the high-pressure airflow.

2. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 1, characterized in that, The siphon negative pressure starting device (1) includes an inlet section (8), a negative compression port section (9) and an outlet section (10) arranged sequentially along the water flow direction. The side wall of the negative compression port section (9) is provided with an air intake hole (11), which is connected to the outside atmosphere. A waterproof and breathable membrane assembly is embedded at the end of the air supply pipe.

3. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 1, characterized in that, The water flow high-pressure air injection device (2) includes a U-shaped pipe (5), a water pumping valve (6), a water draining valve (7), an air replenishment component, and an air injection component; the U-shaped pipe (5) is divided into a drainage side pipe section, a bottom connecting section, and a return side pipe section, and the water pumping valve is located at the bottom of the drainage side pipe section; the water draining valve (7) is located at the top of the return side pipe section; the air replenishment component is a one-way air inlet valve (21), located at the top of the drainage side pipe section; the air injection component is equipped with an exhaust check valve (20), which is offset from the air replenishment component and located at the top of the drainage side pipe section.

4. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 1, characterized in that, The microbial high-pressure injection atomization device (3) includes an integrally formed atomization contraction section, an atomization throat and an atomization diffusion section. The atomization throat has a liquid suction port (12) on its side wall. A self-sealing elastic micro-slit membrane is embedded inside the liquid suction port (12). Micro-slits are pre-made on the surface of the membrane. When there is no negative pressure, the micro-slits close naturally. When subjected to negative pressure, the elastic deformation causes the micro-slits to open.

5. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 1, characterized in that, The microbial liquid storage device includes a storage tank (16), an infusion pipe and a flow regulating valve (17). One end of the infusion pipe is connected to the bottom of the storage tank (16), and the other end is sealed to the suction port (12) of the atomizing throat. The flow regulating valve (17) is connected in series with the infusion pipe.

6. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 1, characterized in that, The gas-liquid mixing device includes a sealed cavity and a spiral guide vane. The spiral guide vane extends spirally along the inner wall of the cavity and has an anti-adhesion groove (13) on its surface.

7. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 1, characterized in that, The soil air injection device (4) has a folded tube structure, with multiple inclined nozzles (18) evenly distributed around its side wall. The inclination direction of the nozzles (18) forms an angle of 30-60° with the axis of the soil air injection device (4).

8. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 3, characterized in that, The bottom connecting section of the U-shaped pipe (5) adopts a circular arc transition structure. The opening pressure of the water pumping valve (6) is less than the closing pressure of the drain valve (7). The air channels of the air supply component and the air injection component are independent of each other and are both equipped with a one-way sealing structure. The water inlet pipe (19) of the U-shaped pipe is sealed to the water outlet section (10) of the siphon negative pressure starting device. The drain outlet (22) is located at the bottom of the drain side pipe section.

9. The siphon-driven microbial anti-liquefaction and seepage-proof injection slope reinforcement device according to claim 4, characterized in that, The self-sealing elastic micro-slit diaphragm has an elastic modulus of 1.5-3 MPa, a prefabricated micro-slit width of 0.1-0.3 mm, and 3-5 micro-slits distributed radially.

10. A construction method for an injection-type slope reinforcement device based on the siphon-driven microbial anti-liquefaction and seepage prevention device according to any one of claims 1-9, characterized in that, Includes the following steps: 1) Pre-embedded device: The siphon negative pressure starting device is pre-embedded inside the slope. Its inlet section (8) is connected to the slope drainage outlet, and the outlet section (10) is sealed and connected to the inlet of the water flow high pressure air injection device. The soil air injection device (4) is inserted into the slope at the preset depth, and each device is fixed and the sealing performance is checked. 2) Microbial liquid preparation: Add the prepared microbial solidification slurry to the storage tank (16) of the microbial liquid storage device, and adjust the flow regulating valve (17) to the preset opening degree; 3) Siphon start: The slope water flows into the inlet section (8) of the siphon negative pressure start device, and negative pressure is formed in the negative compression port section (9). The one-way anti-seepage air valve is opened, and the outside atmosphere enters the flow channel to form a gas-liquid two-phase flow, which drives the water flow to continuously enter the water flow high pressure air injection device. 4) High-pressure airflow generation: The water flow high-pressure air injection device works in a cycle of water injection acceleration → drain valve closure → water flow inertia conversion to high pressure → drainage + high-pressure airflow output → pressure drop reset, continuously generating high-pressure airflow and delivering it to the microbial high-pressure atomization device (3). 5) Microbial liquid atomization and mixing: After the high-pressure airflow is accelerated through the atomization contraction section, a negative pressure is formed at the atomization throat. The self-sealing elastic micro-slit membrane opens, the microbial liquid is drawn in and atomized by the airflow shear. The atomized microbial liquid and the high-pressure airflow enter the gas-liquid mixing device, and are guided by the spiral guide plate to form a swirling mixture. The anti-adhesion tank (13) avoids the atomized particles from adhering. 6) Soil injection: The uniformly mixed atomized microbial liquid and high-pressure airflow are injected into the slope soil through the inclined nozzle (18) of the soil injection device (4) to complete the anti-liquefaction and seepage prevention reinforcement.

Images