Airlift type stirring and grouting reinforcement equipment and implementation method thereof

Abstract

The invention discloses airlift stirring grouting reinforcement equipment and an implementation method thereof.The airlift stirring grouting reinforcement equipment comprises a first reaction liquid container, a second reaction liquid container and a mixing container, the first reaction liquid container is used for providing first reaction liquid for the mixing container, and the second reaction liquid container is used for providing second reaction liquid for the mixing container; the mixing container is connected with gas source equipment, and the gas source equipment is used for conveying gas into the mixing container, so that the first reaction liquid and the second reaction liquid in the mixing container are fully mixed to form slurry. The gas is introduced into the bottom of the mixing container to generate rising bubbles, the first reaction liquid and the second reaction liquid are driven to be mixed in the mixing container to form the slurry, mild mixing of the reaction liquid is achieved, mechanical shearing is avoided, and the problem of urease activity loss caused by blade shearing in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of geotechnical engineering repair technology, and in particular to an airlift-type mixing grouting reinforcement device and its implementation method. Background Technology

[0002] Rocks can develop irregular cracks due to physical or chemical factors. These cracks, collectively known as "structural planes," are the weakest points in a rock mass. This not only affects the continuity and integrity of the rock mass but also increases the risk of premature mine slope collapse. In geotechnical engineering, this rock cracking phenomenon is quite common and poses significant safety hazards.

[0003] The most traditional rock remediation method is physicochemical reinforcement, which involves injecting cement grout or chemical grout into rock fissures. However, chemical grouting increases the risk of groundwater pollution, and the reinforced rock weakens rapidly after several years. Subsequently, microbial grouting has emerged as a more viable alternative. Compared to traditional methods, microbial grouting involves smaller volumes, lower viscosity, higher permeability, and uses more environmentally friendly materials. It aligns with my country's current emphasis on green development and sustainable development, offering significant advantages over traditional remediation techniques.

[0004] In microbial grouting, a continuously oxygenated environment is required to maintain the survival rate of microorganisms. Providing oxygen supply equipment will increase the cost of a single grouting operation. Furthermore, the shear force generated by the high-speed rotation of the blades in mechanical stirring grouting can easily cause the urease protein chains to break, resulting in partial loss of activity.

[0005] Therefore, there is an urgent need to propose an airlift-type mixing grouting reinforcement device to solve the problem. Summary of the Invention

[0006] Based on this, the purpose of this invention is to provide an airlift-type stirring grouting reinforcement device and its implementation method, which eliminates mechanical shearing and avoids the problem of urease activity loss caused by blade shearing.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: In a first aspect, an airlift-type mixing grouting reinforcement device includes a first reaction liquid container, a second reaction liquid container, and a mixing container. The first reaction liquid container is used to supply the first reaction liquid to the mixing container, and the second reaction liquid container is used to supply the second reaction liquid to the mixing container. The mixing container is connected to a gas source device, which is used to send gas into the mixing container so that the first reaction liquid and the second reaction liquid in the mixing container are fully mixed to form a slurry.

[0008] Furthermore, it also includes a grouting pump and a grouting drill rod. The grouting pump is fixedly installed on the mixing container. One end of the grouting pump is connected to the grouting drill rod, and the other end of the grouting pump is connected to the mixing container through a pipeline to deliver the slurry in the mixing container to the grouting drill rod. A microporous aeration disc is provided at the bottom end of the mixing container. An air source device is connected to the aeration disc through a pipeline to deliver gas to the aeration disc, so that the gas can rise and enter the slurry after escaping from the micropores of the aeration disc.

[0009] Furthermore, a ceramic ball anti-settling layer is provided above the aeration disc in the mixing container. The ceramic ball anti-settling layer is composed of porous ceramic balls, which are stacked and arranged vertically in the mixing container.

[0010] Furthermore, the mixing container includes an inner cylinder and an outer cylinder. An alumina ceramic layer is sprayed on the side wall of the inner cylinder, and a ceramic ball anti-settling layer is placed inside the inner cylinder. The bottom end of the inner cylinder is connected to the bottom end of the outer cylinder. The upper end of the inner cylinder is lower than the upper end of the outer cylinder. Connecting ribs are provided between the inner cylinder and the outer cylinder at intervals.

[0011] Secondly, a method for implementing an airlift-type mixing grouting reinforcement device, applied to the aforementioned airlift-type mixing grouting reinforcement device, includes the following steps: S1. Positioning and Leveling: Move the reinforcement equipment to the crack in the rock mass to be grouted and fix the grouting drill rod horizontally; S2. Pour reaction solution into the first reaction solution container and the second reaction solution container respectively, and pretreat the reaction solution; S3. The first reaction liquid and the second reaction liquid are mixed to form a slurry, which is then supplied to the grouting drill pipe to facilitate the filling of the cracks in the rock mass to be grouted.

[0012] Furthermore, the operation process of step S1 is as follows: Move the reinforcement equipment to the preset position; 3D scanning and modeling; the laser SLAM positioning system is activated to perform 3D scanning and modeling, generating a 3D point cloud model; The hydraulic outriggers are horizontally adjusted. Based on the generated 3D point cloud model, the flatness of the ground at the current location is evaluated, and the hydraulic outriggers are extended and adjusted to achieve rapid leveling of the grouting drill rod. The reinforcement equipment is equipped with multiple sets of hydraulic outriggers around the grouting drill rod. Each set of hydraulic outriggers is equipped with an inclination sensor. The inclination sensor monitors the tilt angle of the hydraulic outrigger in real time and feeds the tilt angle data back to the control module.

[0013] Furthermore, the operation process of step S2 is as follows: A predetermined ratio of raw materials is loaded into the first reaction liquid container and the second reaction liquid container to form the first reaction liquid and the second reaction liquid respectively in the first reaction liquid container and the second reaction liquid container; The control unit controls the temperature of the first reaction liquid. After the raw materials are filled into the first reaction liquid container, the control unit is activated to control the temperature of the first reaction liquid in the first reaction liquid container. The control unit is a combination structure that combines a semiconductor cooling chip and a nickel-chromium wire heating element. The pH of the first reaction solution is dynamically adjusted. The first reaction solution container is equipped with a pH sensor. When the pH sensor detects that the pH value of the first reaction solution deviates from the target range of 7.5-8.5, the control module triggers the adjustment mechanism to control the liquid addition pump to add pH adjustment liquid to the first reaction solution container.

[0014] Furthermore, the operation process of step S3 is as follows: The first reaction solution and the second reaction solution are premixed; the first reaction solution and the second reaction solution are simultaneously transported to the premixing chamber for premixing. Gas is supplied into the mixing container to allow the two reaction liquids to mix thoroughly and form a slurry. The premixed first and second reaction liquids are transported into the mixing container through a pipe at the bottom of the mixing container. After the gas source equipment is started, the first and second reaction liquids in the mixing container are fully mixed to form a slurry by the gas rising in the liquid.

[0015] Furthermore, the operation process of step S3 further includes: Anti-settling control of slurry in a mixing container; based on Stokes' law, the synergistic effect of the porous structure of ceramic spheres and ultrasonic vibrating plate is utilized. This reduces the settling velocity of particles in the slurry; an ultrasonic vibrating plate is installed at the bottom of the mixing container, above the aeration disc. Represents particle settling velocity. The particle diameter is and These are the densities of particles and fluids, respectively. It is the acceleration due to gravity. This refers to the fluid dynamic viscosity.

[0016] Furthermore, the operation process of step S3 further includes: PVA fibers are mixed in the grout to form a fiber-reinforced grout. When the fracture width is <1mm, the grouting drill rod is controlled to inject pure grout into the rock fracture. When the fracture width is ≥1mm, the grouting drill rod is controlled to inject fiber-reinforced grout into the rock fracture. The reinforcement equipment also includes a PVA fiber releaser, which is installed inside the grouting drill rod to provide short-cut polyvinyl alcohol fibers.

[0017] In summary, the airlift-type stirring grouting reinforcement device and its implementation method of the present invention generate rising bubbles by introducing gas into the bottom of the mixing container, which drives the first reaction liquid and the second reaction liquid to mix in the mixing container to form a slurry, thereby achieving gentle mixing of the reaction liquid without mechanical shearing and avoiding the problem of urease activity loss caused by blade shearing in traditional technology. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an airlift-type mixing grouting reinforcement device according to the present invention; Figure 2 This is a structural assembly diagram of the mixing container and air pump equipment of the present invention; Figure 3 This is a schematic diagram of the structure of the mixing container of the present invention; Figure 4 This is a schematic diagram illustrating the principle of fully mixing the first and second reaction solutions to form a slurry according to the present invention. Figure 5 This is a schematic diagram illustrating the principle of the fiber-reinforced slurry of the present invention.

[0019] Explanation of key component symbols: 10. First reaction liquid container; 11. pH sensor; 12. Temperature sensor; 20. Second reaction liquid container; 30. Mixing container; 31. Aeration disc; 32. Ceramic ball anti-settling layer; 301. Inner cylinder; 302. Outer cylinder; 33. Ultrasonic vibrating plate; 40. Gas supply equipment; 51. Grouting pump; 52. Grouting drill rod; 53. PVA fiber release device; 54. Hydraulic outrigger; 60. Control module; 61. Premixing chamber; 62. Sensor group; 70. Encased shell; 80. Tracked walking mechanism. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1 like Figures 1 to 3 As shown, this invention provides an airlift-type mixing grouting reinforcement device, which can be applied in scenarios requiring green reinforcement methods, such as 0.1–10m microcracks in mine roadways, tunnel linings, and slope engineering based on EICP. In ECIP technology, the molecular size of legume urease is 20-50nm, which can enter micron-level cracks and has strong permeability. Its reaction product is calcite-type CaCO3, which is similar to the mineral composition of limestone and has strong environmental compatibility. It has low material cost and low carbon emissions, making it a high-efficiency, high-quality, low-pollution, and low-cost grouting method.

[0024] The airlift-type stirring grouting reinforcement device of the present invention includes a first reaction liquid container 10, a second reaction liquid container 20, and a mixing container 30. The first reaction liquid container 10 is used to supply the first reaction liquid to the mixing container 30, and the second reaction liquid container 20 is used to supply the second reaction liquid to the mixing container 30. The first reaction liquid container 10 is connected to the mixing container 30 through a first pipe, and the second reaction liquid container 20 is connected to the mixing container 30 through a second pipe. The mixing container 30 is connected to a gas source device 40, which is used to deliver gas into the mixing container 30 so that the first reaction liquid and the second reaction liquid in the mixing container 30 are fully mixed to form a slurry. In the present invention, the first reaction liquid can be a urease solution, and the second reaction liquid can be a cementing liquid. Specifically, the second reaction liquid includes urea. The mixture of slurry and CaCl2 is supplied by a gas source device 40, which delivers gas from the bottom of the mixing container 30 into the mixing container 30. Upon entering the mixing container 30, the gas generates rising bubbles, causing the slurry within the mixing container 30 to circulate, achieving a gentle mixing effect between the first and second reaction solutions. This process avoids mechanical shearing, preventing the loss of urease activity caused by leaf shearing in traditional technologies, making it particularly suitable for sensitive biological processes such as cell culture and fermentation. Furthermore, energy consumption is concentrated in gas compression, resulting in high overall efficiency and a simple, easy-to-clean structure. Additionally, storing the first and second reaction solutions separately in the first reaction solution container 10 and the second reaction solution container 20 avoids clogging caused by premature reaction when stored in the same container.

[0025] Furthermore, the airlift-type mixing grouting reinforcement equipment also includes a grouting pump 51 and a grouting drill rod 52. The grouting pump 51 is fixedly installed on the mixing container 30. One end of the grouting pump 51 is connected to the grouting drill rod 52 through a pipe, and the other end of the grouting pump 51 is connected to the mixing container 30 through a pipe, so as to send the grout in the mixing container 30 to the grouting drill rod 52. When the equipment of the present invention is working, the grouting drill rod 52 is placed at the rock mass fissure to send the grout into the rock mass fissure, thereby realizing the reinforcement treatment operation of the rock mass.

[0026] In one embodiment, a premixing chamber 61 is connected to one side of the mixing container 30 via a third pipe. The first reaction liquid container 10 is connected to the premixing chamber 61 via a first pipe, and the second reaction liquid container 20 is connected to the premixing chamber 61 via a second pipe. The first reaction liquid provided by the first reaction liquid container 10 and the second reaction liquid provided by the second reaction liquid container 20 are first dynamically mixed in the premixing chamber 61 and then sent to the mixing container 30 to avoid blockage caused by premature reaction when the first reaction liquid and the second reaction liquid are stored in the same container.

[0027] In one embodiment, the mixing container 30 has a cylindrical structure. Before the reaction liquid is introduced, an annular microporous aeration disc 31 is provided at the bottom end of the mixing container 30. A third pipe is positioned above the aeration disc 31, allowing the gas escaping from the micropores of the aeration disc 31 to rise directly into the slurry after the first and second reaction liquids are mixed, further promoting the mixing of the first and second reaction liquids. The gas source device 40 is connected to the aeration disc 31 via a pipe to supply gas to the aeration disc 31. The microporous structure on the aeration disc 31 has a pore size of 0.5-1 mm. The gas source device 40 introduces nitrogen and... A carbon dioxide mixed gas in a ratio of 7:3 is used to lower the pH of the slurry, delay calcium carbonate precipitation, and improve permeability. In addition, compressed gas supplied by the gas source device 40 escapes through the micropores on the aeration disc 31 to form a uniformly distributed cluster of microbubbles, which is used to drive the slurry to form a vertical circulation flow in the mixing container 30. Before the reaction liquid is input into the mixing container 30, the tailings sand, as the matrix to be cemented, is pre-added into the mixing container 30 through the top delivery pipe. This invention utilizes vertical circulation flow to promote uniform mixing of slurry and tailings sand. This structure does not require blade stirring and avoids enzyme activity loss caused by mechanical shearing.

[0028] A ceramic ball anti-settling layer 32 is installed above the aeration disc 31 inside the mixing container 30. This ceramic ball anti-settling layer 32 is designed to efficiently trap large-diameter tailings during the air-lift circulation process, preventing sedimentation and clogging. The ceramic ball anti-settling layer 32 is composed of porous ceramic balls, stacked vertically within the mixing container 30, with the filling height of the ceramic ball anti-settling layer 32 occupying 1 / 3 of the height of the mixing container 30. The internal structure of the ceramic ball anti-settling layer 32 is an open and interconnected microporous network, facilitating slurry penetration and effectively blocking solid impurities. The slurry flows upwards, driven by bubbles generated by the aeration disc 31, and as it flows through the ceramic ball settling layer, particle screening and sedimentation control are achieved. Compared to traditional gravity settling devices, its settling rate is significantly reduced.

[0029] In one embodiment, the inner wall of the mixing container 30 is coated with an alumina ceramic layer, and the surface of the alumina ceramic layer is designed with spiral guide grooves to prevent particle deposition and enhance turbulence; wherein, the guide grooves are designed to rise in a spiral shape along the inner wall of the mixing container 30.

[0030] In one embodiment, the mixing container 30 includes an inner cylinder 301 and an outer cylinder 302. An alumina ceramic layer is sprayed on the side wall of the inner cylinder 301, and a ceramic ball anti-settling layer 302 is placed inside the inner cylinder 301. The bottom end of the inner cylinder 301 is connected to the bottom end of the outer cylinder 302. The upper end of the inner cylinder 301 is lower than the upper end of the outer cylinder 302. Connecting ribs are provided between the inner cylinder 301 and the outer cylinder 302 at intervals, thereby achieving the effect of fixing the inner cylinder 301 inside the outer cylinder 302. If the slurry in the mixing container 30 overflows from the top of the outer cylinder 302 after rising with the bubbles, it can circulate downward through the annular gap between the outer cylinder 302 and the inner cylinder 301.

[0031] In one embodiment, a sensor group 62 is connected to one side of the mixing container 30. The sensor group 62 includes a bubble sensor and a viscosity sensor. The bubble sensor is used to monitor the gas content in the mixing container 30 in real time. When the gas content in the mixing container 30 exceeds a preset gas content value, an alarm signal is sent. The viscosity sensor is used to monitor the viscosity of the slurry in the mixing container 30 in real time. The bubble sensor and the viscosity sensor respectively feed back the monitoring data to the control module 60. The control module 60 is used to adjust the gas flow rate of the gas source device 40 and regulate the mixing ratio of the first reaction liquid and the second reaction liquid in the mixing container 30, and dynamically adjust the aeration intensity to adapt to the slurry mixing requirements of different working stages. The bubble sensor is an ultrasonic array probe, which is set at the middle height of the mixing container 30. It can collect the gas content signal in the slurry in real time and transmit the monitoring result to the control module 60 through the signal line. The control module 60 controls and adjusts the opening angle of the regulating valve of the gas source device 40 according to the monitoring result, thereby accurately controlling the gas pressure and bubble generation rate entering the aeration disc 31, preventing excessive aeration from causing bubble interference, and avoiding insufficient aeration from affecting the air flow driving effect.

[0032] Furthermore, the viscosity sensor integrates an online rotational viscometer, which can monitor the slurry viscosity online and send an alarm signal when the slurry viscosity exceeds the limit. When the slurry viscosity in the mixing container 30 exceeds the preset viscosity value, the control module 60 sends a speed reduction adjustment operation signal to the grouting pump 51. The control module 60 adopts a conventional control device in the field, including a PID controller and a PLC decision system. The control module 60 is linked with the gas source equipment 40, the first reaction liquid container 10, the second reaction liquid container 20, and the grouting pump 51. It can adjust the gas flow rate delivered to the mixing container 30 according to the feedback signal from the viscosity sensor to maintain a stable circulation. In addition, the airlift-type mixing grouting reinforcement equipment of the present invention also includes an ERT resistivity imager for monitoring the grout diffusion rate. Specifically, a conventional multi-electrode array monitoring method used in geotechnical engineering is adopted: one end of the multi-channel switching valve is connected to the grout outlet section of the grouting drill rod 52 via a pressure-resistant pipeline (integrating monitoring electrodes), and the other end is connected to the ERT resistivity imager host via a signal cable. The switching valve controls the on / off of monitoring channels in different directions through a relay, realizing time-division scanning monitoring of the cracks around the grouting drill rod. In this embodiment, the electrode array of the ERT resistivity imager is arranged at a density of 60 points / ㎡ on the surface of the fractured rock mass. The resistivity change signal collected by the electrodes is transmitted to the host via the switching valve. The host processes the data and sends it to the control module 60. The control module 60 generates a grout diffusion map based on the data, thereby optimizing the grouting path.

[0033] In one embodiment, the device of the present invention further includes a PVA fiber releaser 53, which is disposed inside the grouting drill rod 52 to provide short-cut polyvinyl alcohol fibers to guide the directional growth and deposition of CaCO3 crystals in the fractures. The PVA fiber releaser 53 can be turned on or off as needed. Specifically, the control module 60 automatically executes a graded injection strategy based on the width of the rock fractures: when the fracture width is <1mm, the grouting drill rod 52 is controlled to inject pure EICP slurry (pH 6.5-7.0) into the rock fractures; when the fracture width is ≥1mm, the grouting drill rod 52 is controlled to inject fiber-reinforced slurry into the rock fractures. After the fibers and slurry are mixed inside the grouting drill rod 52, a fiber-reinforced slurry is formed. The fibers and slurry are injected into the fractures simultaneously. The negatively charged groups carried on the fibers can adsorb Ca²⁺. + This induces calcium carbonate crystals to grow along the fiber skeleton, forming a dense network structure, significantly improving the filling rate and compressive strength of the reinforced area; preferably, the mass ratio of fiber to slurry is 1:3. An ultrasonic vibration plate 33 is installed at the bottom of the mixing container 30 to prevent fiber settling and ensure continuous conveying.

[0034] In one embodiment, the first reaction liquid container 10 and the second reaction liquid container 20 are independently provided and are both constructed of transparent polyethylene. Both the first reaction liquid container 10 and the second reaction liquid container 20 are equipped with a liquid level gauge and a weighing module. Both the first reaction liquid container 10 and the second reaction liquid container 20 are provided with reaction liquid filling ports. When it is detected that the reaction liquid in the first reaction liquid container 10 and / or the second reaction liquid container 20 is less than the preset value, an external liquid supply device can fill the corresponding reaction liquid container through the filling port to make up for the consumption of reaction liquid in the first reaction liquid container 10 and the second reaction liquid container 20.

[0035] Furthermore, a semiconductor temperature control chip is provided in the interlayer of both the first reaction liquid container 10 and the second reaction liquid container 20 to maintain urease activity (optimal temperature 25°C). The volume ratio of the first reaction liquid container 10 to the second reaction liquid container 20 is 1:1.5-1:2. The second reaction liquid container 20 has a built-in static mixer to premix calcium chloride and urea solution with a molar ratio of 1:1-1:1.2.

[0036] In one embodiment, the device of the present invention is further provided with a covering shell 70. The first reaction liquid container 10, the second reaction liquid container 20, and the mixing container 30 are all disposed within the covering shell 70. A tracked walking mechanism 80 is installed at the bottom of the covering shell 70 to enable the entire device to move smoothly in complex geological environments. The tracked walking mechanism 80 adopts an independent left and right drive mode, controlled by two high-torque motors respectively. The maximum output torque of a single motor is 250 N·m, and it has climbing ability. The tracks of the tracked walking mechanism 80 are constructed of wear-resistant rubber composite material, which has good puncture resistance and low ground pressure characteristics, and is suitable for various uneven foundations such as tunnels, mines, and slopes. The suspension system of the tracked walking mechanism 80 integrates a damping buffer module, which can absorb vibrations when the device moves and avoid disturbing the grouting area. The tracked walking mechanism 80 is remotely controlled by the control module 60, and can realize in-situ turning, automatic return, and low-speed precise propulsion, providing displacement guarantee for automated grouting operations.

[0037] Example 2 Please see Figures 1 to 5 According to the above-described airlift-type stirred grouting reinforcement device, this invention provides a method for implementing the airlift-type stirred grouting reinforcement device. The first reaction liquid container 10, the second reaction liquid container 20, the mixing container 30, and the gas source device 40 involved in this method have the same technical features as those described in the above-described airlift-type stirred grouting reinforcement device embodiment, and can produce the same technical effects. The method for implementing the airlift-type stirred grouting reinforcement device of this invention involves injecting the first reaction liquid and the second reaction liquid into separately configured first reaction liquid containers 10 and second reaction liquid containers 20, respectively. In conjunction with the gas source device 40, gas is introduced to the bottom of the mixing container 30 to generate rising bubbles, which drive the first and second reaction liquids to mix within the mixing container 30 to form a slurry. This achieves gentle mixing of the reaction liquids without mechanical shearing, avoiding the problem of urease activity loss caused by leaf shearing in traditional technologies. It is particularly suitable for sensitive biological processes such as cell culture and fermentation. Furthermore, energy consumption is concentrated in gas compression, resulting in high overall efficiency. The structure is simple and easy to clean, and it can be combined with an aeration function to meet the mixing requirements of the reaction liquids.

[0038] The present invention discloses a method for implementing an airlift-type mixing grouting reinforcement device, comprising the following steps: S1. Positioning and leveling: Move the reinforcement equipment to the crack in the rock mass to be grouted and fix the grouting drill rod 52 horizontally.

[0039] In complex mining roadways, tunnel lining, and slope engineering environments, a laser SLAM positioning system and hydraulic outriggers 54 are used in conjunction to ensure precise grouting operations. This ensures that the grouting drill rod 52 is accurately aligned with the crack, effectively avoiding grouting deviation. The hydraulic outriggers 54 are set around the grouting drill rod 52 to provide stable support.

[0040] Specifically, the operation process of step S1 is as follows: The equipment is moved to the preset position. The tracked walking mechanism 80, driven independently by two high-torque motors (each with a maximum output torque of 250 N·m), is activated, enabling stable movement in complex roadway conditions (such as gravel, mud, and sloping surfaces). Before construction, the rock mass of the roadway is located using ground-penetrating radar and 3D laser scanning to identify the locations of fissures requiring grouting reinforcement. Combined with the roadway engineering coordinate system, the spatial location is converted into specific coordinate parameters, forming the preset position coordinates. Operators input the preset position coordinates into the equipment's control module 60 according to the pre-planned construction scheme. Upon receiving the command, the control module 60 drives the equipment smoothly and quickly to the preset position through differential steering control of the tracked walking mechanism 80. During this process, the equipment's inertial navigation system monitors the direction and speed of travel in real time, ensuring the equipment strictly follows the planned path and avoids deviations caused by narrow roadways, obstacles, or other factors.

[0041] 3D scanning and modeling: The laser SLAM positioning system is activated for 3D scanning and modeling. Once the equipment reaches the preset position, the laser SLAM positioning system starts immediately. This system uses high-frequency laser scanning technology to perform a comprehensive scan of the surrounding rock wall, generating a 3D point cloud model. After the laser beam reflects off the rock wall surface, it is received by sensors, and the time difference is recorded. Combined with the known laser emission angle, the 3D coordinates of each point on the rock wall surface are accurately calculated using the principle of triangulation. The laser SLAM positioning system integrates the large number of data points collected to generate a high-precision 3D point cloud model. This 3D point cloud model can clearly present detailed information such as the undulations and fissure distribution of the rock wall.

[0042] The hydraulic outriggers 54 are horizontally adjusted. Based on the 3D point cloud model generated by the laser SLAM positioning system, the equipment's control module 60 assesses the ground flatness at the current location and automatically controls the hydraulic outriggers 54 to extend and adjust, achieving rapid leveling of the grouting drill rod. The equipment has four sets of hydraulic outriggers 54 around the grouting drill rod 52, each set equipped with a tilt sensor. The tilt sensors monitor the tilt angle of the hydraulic outriggers 54 in real time and feed the tilt angle data back to the control module 60. The control module 60 precisely controls the extension and retraction length of each hydraulic outrigger 54 according to a preset level standard, achieving rapid leveling of the grouting drill rod 52. During this process, the laser SLAM positioning system focuses on ensuring the verticality of the grouting drill rod 52. Once leveling is complete, the hydraulic outriggers 54 automatically lock, providing a stable and reliable support foundation for subsequent grouting operations and effectively preventing grouting deviation caused by equipment shaking or tilting.

[0043] Tunnel unevenness is a major factor leading to grouting deviation and subsequent filling failure. Before grouting operations, precise positioning and leveling of the equipment are essential to ensure grouting quality. The high-precision collaborative operation of a laser SLAM positioning system and hydraulic outriggers effectively solves the construction challenges caused by tunnel unevenness, providing a solid guarantee for the smooth progress of subsequent grouting operations and the reliability of the grouting effect.

[0044] S2. Reaction solutions are poured into the first reaction solution container 10 and the second reaction solution container 20 respectively, and the reaction solutions are pretreated. The first reaction solution is poured into the first reaction solution container 10, and the second reaction solution is poured into the second reaction solution container 20. During grouting operations, the efficiency of the urease catalytic reaction directly affects the bonding effect of the grouting material. Therefore, the first reaction solution container 10 is also equipped with a pH sensor 11. The semiconductor temperature control chip and the pH sensor 11 form a control unit. By controlling the temperature and pH, the optimal activity conditions of the urease are maintained, ensuring the stable performance of the grouting material.

[0045] Specifically, the operation process of step S2 is as follows: A pre-prepared ratio of raw materials is filled into the first reaction liquid container 10 and the second reaction liquid container 20 to form the first reaction liquid and the second reaction liquid, respectively. The first reaction liquid container 10 and the second reaction liquid container 20 are designed as separate units, used for injecting urease solution and cementing solution, respectively. First, a urease solution prepared by soybean flour extraction is injected into the first reaction liquid container 10. The activity index of this urease solution must be strictly controlled to ensure that the enzyme activity is ≥15U / mL. To ensure the stability of urease activity, a specific protective agent is added to the solution to inhibit the destruction of enzyme activity by external factors. In the second reaction liquid container 20, a compartmentalized storage method is used, containing a urea solution (concentration 1.2mol / L) and a CaCl2 solution (concentration 1.0mol / L), respectively. Urea serves as the substrate for the urease-catalyzed reaction, and its concentration directly affects the reaction rate; CaCl2 participates in the formation of calcium carbonate precipitate during the reaction, achieving crack filling and reinforcement. To ensure accurate solution concentration, the raw materials must be weighed using a high-precision electronic balance before filling, and then diluted to the target volume using a volumetric flask. This embodiment utilizes the basic formula for calculating solution concentration: molar concentration (mol / L) = amount of solute (mol) / solution volume (L). For example, when preparing a 1.2 mol / L urea solution, the mass of urea needs to be calculated according to the formula (m = n × M, where M is the molar mass of urea), and then diluted to the target volume. Simultaneously, a filter device is installed at the inlet of the second reaction liquid container 20 to filter out any impurities that may be present in the solution, preventing blockage of subsequent delivery pipelines.

[0046] The control unit regulates the temperature of the first reaction liquid. After the raw materials in the first reaction liquid container 10 are filled, the control unit is activated to regulate the temperature of the first reaction liquid inside the container 10. This control unit employs a bidirectional temperature control technology combination structure, combining a semiconductor cooling chip and a nickel-chromium wire heating element. The cold side of the semiconductor cooling chip faces the container wall to achieve cooling, while the hot side contacts the external environment through a heat sink. The nickel-chromium wire heating element is fixed to the heat sink outside the semiconductor cooling chip in a spiral winding manner, maintaining a distance of 5-8 mm from the container wall, and achieves heating through both thermal radiation and thermal conduction. The two elements are isolated by a heat-insulating gasket to avoid interference, enabling precise control of heating and cooling. Considering that urease is extremely sensitive to temperature changes, following the relationship: activity decay rate = 2% × (actual temperature - optimal temperature), studies have shown that for every 1℃ increase in temperature, the enzyme activity decay rate reaches 2%. Therefore, the system is set to slowly increase the temperature at a gradient of ≤0.5℃ / h to stably control the solution temperature in the first reaction liquid container 10 and the second reaction liquid container 20 at 25±0.5℃.

[0047] During the heating process, temperature sensors 12, distributed inside the first reaction liquid container 10 and the second reaction liquid container 20, collect solution temperature data in real time and feed the data back to the control module 60. The control module 60, based on a preset temperature curve, precisely controls the working state of the semiconductor cooling chip and the nichrome wire using a PID control algorithm. The logical formula of the PID control algorithm is: Output value = Proportional term (P) + Integral term (I) + Derivative term (D), where the proportional term is proportional to the current temperature deviation, providing a fast response to error; the integral term accumulates historical deviations, eliminating static errors; and the derivative term predicts the trend of deviation changes, suppressing overshoot. This control method ensures smooth and stable temperature changes, minimizing the impact of temperature fluctuations on urease activity. Simultaneously, the control module 60 also has an over-temperature protection function. Once an abnormal temperature is detected (e.g., exceeding 26°C), an alarm will be immediately activated and the temperature control strategy will be automatically adjusted to ensure the safety of urease activity.

[0048] The pH of the first reaction solution is dynamically adjusted; besides temperature, pH is also a key factor affecting urease activity, with the optimal pH for urease being 8.0. The pH value is determined using the formula... The pH of the solution is characterized. To maintain this slightly alkaline environment, the first reaction liquid container 10 is equipped with a high-precision pH sensor 11, which can monitor the pH changes of the solution in real time. When the pH sensor 11 detects that the pH value of the first reaction liquid deviates from the target range of 7.5-8.5, the control module 60 will trigger the adjustment mechanism to control the liquid addition pump to add pH adjustment liquid to the first reaction liquid container 10. In this embodiment, the pH adjustment liquid is NaOH solution. If the pH value is lower than 7.5, the control module 60 will send a control signal to start the liquid addition pump to precisely add 0.1 mol / L NaOH solution to the first reaction liquid container 10. This ensures the accuracy of the pH adjustment process. The chemical reaction that occurs at this time is a neutralization reaction: Na + Simultaneously, the built-in stirring device in the first reaction liquid container 10 will be activated to ensure rapid and uniform mixing of the added NaOH solution, preventing local pH imbalance. This dynamic adjustment mechanism continuously and stably controls the solution pH within the optimal range for urease activity, providing a strong guarantee for the efficient execution of subsequent grouting operations.

[0049] S3. The first reaction liquid and the second reaction liquid are mixed to form a slurry, which is then supplied to the grouting drill pipe 52.

[0050] Specifically, the operation process of step S3 is as follows: The first and second reaction solutions are premixed. During the premixing stage, the urease solution and the cementing solution are stored in separate containers. A metering pump starts according to a pre-set program, precisely extracting the two reaction solutions at a 1:1 volume ratio. The metering pump employs high-precision flow control technology to ensure that the volume error of the extracted liquid is kept within a minimal range. The two reaction solutions are simultaneously delivered to the premixing chamber 61 for premixing. Specifically, the two reaction solutions are simultaneously delivered to the inlet of the static mixer within the premixing chamber 61, and then enter the static mixer. In the static mixer, the liquid sequentially passes through 12 sets of staggered 45° spiral blades. Each time it passes through a set of blades, the liquid is divided into different streams, which rotate and recombine under the guidance of the blades. As the liquid continuously flows through subsequent blades, the processes of division, rotation, and mixing are repeated, allowing the urease solution and cementing solution to achieve initial homogenization in a laminar flow state, forming a relatively uniform mixture. The system automatically shuts down when the pipeline pressure difference exceeds 50 kPa to prevent blockage of the static mixer and subsequent ratio imbalance. In this embodiment, the static mixer is a common structure in the art and will not be described in detail here.

[0051] The gas supply device 40 is activated to supply gas into the mixing container 30, allowing the two reaction liquids to mix thoroughly in the mixing container 30 to form a slurry; for example Figure 4 As shown, the premixed first and second reaction solutions are transported to the mixing container 30 through a pipe at the bottom of the mixing container. After the gas source device 40 is started, the first and second reaction solutions in the mixing container are fully mixed to form a slurry by the rising of gas in the liquid. Combined with the design of the spiral guide channel, on the one hand, the rising microbubbles drive the liquid flow, promoting the mixing of substances and ensuring full contact between urease and urea; on the other hand, the gas dissolution changes the pH value of the liquid (usually making the reaction system weakly alkaline), providing a suitable catalytic environment for urease. Under these conditions, urease efficiently catalyzes the decomposition of urea. The chemical reaction equation is: The generated ammonia Dissolves in water to form ammonium ions and hydroxide ions ( This further increases the alkalinity of the system, promoting the carbon dioxide... It reacts with water to form carbonate ions. ,Right now Calcium ions in the cementing solution With newly generated carbonate ions They combine and undergo a precipitation reaction to form calcium carbonate. The reaction formula is: In this invention, the microporous aeration disc 31 is meticulously crafted from titanium alloy, a material known for its high strength and corrosion resistance, enabling stable operation under complex conditions. Its surface is precision-machined to form a regularly arranged array of micropores, with each micropore's diameter precisely controlled at 50 μm. The operation of the microporous aeration disc 31 is a dynamic process based on fluid mechanics and mass transfer principles.

[0052] The gas source device 40 delivers gas to the microporous aeration disc 31 via a pipeline. During gas delivery, the gas pressure is stably controlled at 0.5 MPa by a pressure regulating valve. Stable pressure is a prerequisite for the normal operation of the aeration disc 31; excessive pressure may damage the aeration disc 31, while insufficient pressure will prevent the generation of the required microbubbles. Micropore compression and bubble formation: When gas with a pressure of 0.5 MPa reaches the aeration disc 31, it acts on the regularly arranged 50 μm micropores on its surface. Due to the extremely small pore size, the gas is constrained and resisted as it passes through the micropores, thus being compressed into tiny bubbles. In this process, the precise machining and regular arrangement of the micropores play a crucial role, ensuring that the bubbles generated by each micropore are relatively uniform in size, forming a cluster of microbubbles with an average diameter of 0.5 mm.

[0053] In this invention, the principle of microbubble rising to drive stirring is as follows: During the ECIP process, when the microporous aeration disc 31 operates at a pressure of 0.5 MPa to generate microbubbles with an average diameter of 0.5 mm, these microbubbles rise in the liquid. Due to the buoyancy generated by the density difference between the bubbles and the liquid, they exert an upward drag force on the surrounding liquid. The simultaneous rise of a large number of microbubbles is like countless small "pistons" pushing the liquid, driving the liquid to generate an overall upward flow. This flow drives the urease solution, cementing solution, and reaction products in the reaction zone to circulate, making the originally relatively static liquid dynamic, thus achieving a basic stirring effect.

[0054] When microbubbles rise to the liquid surface and burst, they generate an instantaneous impact force and release energy. This energy propagates into the surrounding liquid in the form of waves, causing localized disturbances. These localized disturbances superimpose, forming ripples and waves on the liquid surface, and gradually diffuse into the liquid's interior. This surface and interior disturbance can break up any concentration stratification that may exist in the liquid, allowing substances such as urease, calcium ions, and carbonate ions to be distributed more evenly, promoting effective collisions and reactions between them.

[0055] Furthermore, the operation process of step S3 also includes: Maintaining laminar flow in the mixing container 30: To protect urease activity, the entire system needs precise laminar flow control. The flow of the slurry within the reaction zone is controlled by adjusting the air intake of the main aeration disc 31. Specifically, operators adjust the air flow rate and swirl intensity based on pre-set parameters and real-time monitoring data.

[0056] When the gas flow rate and swirl intensity are within a suitable range, the Reynolds number Re of the slurry is less than 2100, indicating that the system is in a laminar flow state. In laminar flow, viscous forces dominate fluid motion, resulting in a smooth and orderly flow pattern, avoiding the high shear forces caused by turbulence. Studies have shown that when the shear rate is greater than 100 s⁻¹... - ¹ At this point, urease activity decreases by more than 30%. By maintaining laminar flow, urease activity is effectively protected, ensuring that urease can fully exert its catalytic effect and promote the smooth chemical reaction between the urease solution and the cementing solution, thereby achieving efficient and stable operation of the entire system.

[0057] In one embodiment, the operation process of step S3 further includes: Anti-settling control is implemented for the slurry within the mixing container 30. Specifically, the ceramic ball anti-settling layer 32 adopts a double-layer gradation structure. The lower layer consists of corundum ceramic balls, forming a coarse particle interception layer that effectively traps tailings particles. The upper layer uses zirconia ceramic balls to further refine the filtration and prevent particle agglomeration. Furthermore, the ultrasonic vibrating plate 33 in the airlift-type mixing grouting reinforcement equipment of this invention employs a piezoelectric transducer. The acoustic flow effect and cavitation generated by ultrasound can disrupt van der Waals forces and hydrogen bonds between particles, effectively inhibiting particle agglomeration and caking.

[0058] According to Stokes' Law This formula is used to calculate the settling velocity of particles in a fluid. Wherein, Represents particle settling velocity. The particle diameter is and These are the densities of particles and fluids, respectively. This is the acceleration due to gravity (usually taken as 9.81 m / s²). This refers to the fluid dynamic viscosity. The porous structure of the fluidized ceramic bed can intercept large-diameter particles, reducing... The ultrasonic transducer plate further reduces particle diameter by breaking down particle agglomeration, while the ceramic spheres alter the fluid flow state and increase... .

[0059] By leveraging the synergistic effect of the porous structure of the ceramic spheres and ultrasonic vibration, and based on the calculation logic of Stokes' law, the particle settling velocity in the slurry was successfully reduced to 0.01 m / h, corresponding to a settling rate of only 0.8%. Experimental data shows that without this system, the particle settling rate can reach 25% within 30 minutes. This significant difference verifies the effectiveness of the anti-settling system designed based on Stokes' law. Furthermore, the porous structure of the ceramic spheres can extend the residence time of the slurry in the mixing container 30, promoting sufficient contact between the gas, liquid, and solid phases and improving mixing efficiency.

[0060] In one embodiment, the operation process of step S3 further includes: To remove impurities from the grout, a screen structure is installed at the inlet end of the grouting drill rod 52 to intercept impurities in the grout. The screen is a 100-mesh screen (150μm aperture) made of 316L stainless steel, which quickly intercepts large particles such as sand and clumps larger than 150μm through mechanical sieving. The screen surface is electrochemically polished to reduce grout flow resistance. This involves the Darcy-Weisbach equation in fluid mechanics for evaluating flow resistance, with the formula: in, This represents the head loss along the friction path (characterizing the magnitude of resistance). It is the coefficient of friction (related to factors such as the surface roughness of the screen). For the length of the screen, The equivalent diameter of the screen aperture is... The slurry flow rate is... This is the acceleration due to gravity. Reducing the surface roughness of the screen can decrease this acceleration. Value, and thus decrease This reduces the resistance to slurry flow. At the same time, the screen has a self-cleaning function, preventing impurities from accumulating and clogging the screen holes.

[0061] In one embodiment, the operation process of step S3 further includes: PVA fibers are mixed into the slurry to form a fiber-reinforced slurry; such as Figure 5 As shown, when the fracture width is <1mm, the grouting drill rod 52 is controlled to inject pure EICP grout (pH 6.5-7.0) into the rock fracture; when the fracture width is ≥1mm, the grouting drill rod 52 is controlled to inject fiber-reinforced grout into the rock fracture; among them, surface-modified polyvinyl alcohol (PVA) fibers are selected, with a fiber diameter of 12μm, a length of 6mm, and a surface grafted with carboxyl groups (-COO). - This modification imparts a negative charge to the fiber surface, enabling the specific adsorption of Ca²⁺. + Ions provide nucleation sites for calcium carbonate crystal growth: R represents the fibrous skeleton. This reaction increases the local calcium ion concentration, accelerating the supersaturated precipitation of calcium carbonate. The improvement in stone strength follows the rule of mixtures in composite materials: For the strength of composite materials, , This refers to the volume fraction of the matrix (slurry) and fibers. , To correspond to the strength. 6% fiber mass percentage (experimentally optimized) is achieved by increasing... and This increases flexural strength by 80% and compressive strength by 35%.

[0062] In this invention, the PVA fiber releaser 53, which provides PVA fibers, uses a servo motor to transport the fibers, and the dispersing impeller utilizes the principle of fluid dynamics dispersion (based on Reynolds number Re and shear force analysis) to break up fiber agglomeration. When Re exceeds a critical value (usually Re>2300 enters a turbulent state), the high shear force can separate the fiber bundle into monofilaments, ensuring uniform dispersion.

[0063] The eddy current drill bit used in the grouting drill rod has a rotatable helical blade structure, which can generate a strong eddy current field during grouting. CFD simulations have verified that this eddy current field can ensure that the fiber orientation in the grout exceeds 85%, guaranteeing that the fibers are orderly arranged along the crack extension direction to form a reinforcing skeleton. The mechanism of crystallization reinforcement is the adsorption of Ca²⁺ by carboxyl groups on the fiber surface. + The formation of a supersaturated region follows the nucleation and growth kinetics equation: For nucleation rate, It is a constant. Supersaturation. Calcium ion enrichment leads to... Increase, A 3-fold increase. Crystal growth along the fiber axis conforms to epitaxial growth theory, reducing the surface energy barrier and improving the fracture toughness of the stone. from Upgraded to It significantly enhances crack resistance.

[0064] In one embodiment, the operation process of step S3 further includes: Online viscosity monitoring is performed on the slurry within the mixing container 30. During grouting operations, the viscosity of the slurry is crucial, directly affecting its fluidity and grouting effect. Therefore, this invention employs an advanced coaxial cylindrical rheometer as an online viscometer to monitor the apparent viscosity of the slurry in real time. The viscosity measurement in this embodiment follows Newton's law of viscosity; simply put, the greater the shear force on the slurry, the faster the flow velocity changes, and the relationship between the two reflects the viscosity. The system pre-sets a critical "warning line"—when the apparent viscosity of the slurry exceeds 45 mPa·s, it means the slurry is too thick, its fluidity is poor, and it is not conducive to grouting construction. At this time, the system will immediately and automatically trigger a dilution program. After the dilution program is initiated, if the apparent viscosity of the slurry exceeds 45 mPa·s, an appropriate amount of deionized water is added to the first or second container to reduce the slurry concentration. After adding deionized water to the slurry, the concentration decreases, and the viscosity also decreases, thereby restoring good fluidity. The system will continuously monitor the viscosity until it drops to the target value of 45 mPa·s or below, ensuring that the slurry is always in optimal working condition.

[0065] In one embodiment, the operation process of step S3 further includes: Based on the fracture width and rock mass mechanical properties, the grouting pressure is adjusted. Different grouting pressures are required for fractures of different widths to ensure grouting effectiveness while avoiding damage to the rock mass. In this invention, a PLC (Programmable Logic Controller) intelligent decision-making unit is added to the control module 60 of the reinforcement equipment to flexibly adjust the grouting pressure according to the fracture width and rock mass mechanical properties. For micro-fractures with a width of less than 0.5 mm, the grout does not easily penetrate due to the very narrow gaps, requiring greater pressure to overcome capillary resistance. This is analogous to using a straw to suck up water; the thinner the straw, the more effort it takes to suck up water. Therefore, for these micro-fractures, the PLC intelligent decision-making unit directly sets the grouting pressure to 3.0 MPa, which is sufficient to propel the grout smoothly into the tiny fractures and fill them. However, the situation is different for wider fractures with a width of 0.5 mm or more. If the pressure is too high, it may "crack" the originally stable rock mass. Therefore, the PLC intelligent decision-making unit adopts a more cautious pressure setting method based on the tensile strength of the rock mass: controlling the grouting pressure at the smaller of 2.0 MPa and 60% of the rock mass's tensile strength. This ensures that the grout fully fills the fractures while avoiding damage to the rock mass due to excessive pressure, ensuring the entire grouting process is safe and efficient. Through this staged pressure-increasing strategy, the intelligent decision-making unit can accurately match different fracture conditions, achieving intelligent grouting pressure control.

[0066] In one embodiment, the operation process of step S3 further includes: A digital model is constructed based on the Navier-Stokes equations of computational fluid dynamics. Inputting the geometric features of the fractures obtained from laser SLAM scanning, the initial parameters of the grout determined by the reaction fluid ratio, and the preset initial grouting pressure, the system performs numerical calculations to obtain simulation results for pressure, flow rate, and viscosity at different time points. The system then compares and analyzes the real-time collected pressure, flow rate, and viscosity data with the simulation results. When the deviation between the actual data and the simulation results exceeds 10%, the control module 60 triggers an early warning and makes targeted adjustments—if the pressure is too high, the grouting pump speed is reduced; if the viscosity is too high, water is added and the air source flow rate is adjusted; if the flow rate is too low, the pump power is increased and the mixing ratio is optimized. The adjusted data is then fed back to update the parameters.

[0067] in, For flow velocity vectors, For pressure, For viscosity, The simulation parameters of the external force system are updated every 10 seconds, and the grouting rate is dynamically adjusted to ensure that the grout filling rate in the cracks reaches more than 95%. When the deviation between the actual data and the simulation results exceeds 10%, an early warning is triggered and the control parameters are adjusted to achieve adaptive optimization of the grouting process.

[0068] In summary, the airlift-type mixing grouting reinforcement equipment and its implementation method of the present invention collect data in real time using an online viscometer, and then send grouting pressure and grouting flow adjustment command signals by a PLC intelligent decision unit to control the grouting pump 51 to execute the commands to adjust the grouting pressure and grouting flow. In addition, the constructed digital model is used to compare the real-time collected data with the simulation results to verify the effect, and the feedback is sent to the control module 60 to further adjust the control parameters, thereby forming a complete closed-loop control system to ensure that the high-pressure grouting operation is efficient, safe and accurate.

[0069] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An air-lift agitated grouting reinforcement apparatus, characterized by, The application relates to a slurry injection device, which comprises a first reaction liquid container, a second reaction liquid container and a mixing container, the first reaction liquid container is used for providing the mixing container with a first reaction liquid, the second reaction liquid container is used for providing the mixing container with a second reaction liquid, the mixing container is connected with a gas source device, the gas source device is used for sending gas into the mixing container, so that the first reaction liquid and the second reaction liquid in the mixing container are fully mixed to form a slurry.

2. An air-lift agitator grouting reinforcement apparatus according to claim 1, wherein The slurry injection device also comprises a slurry injection pump and a slurry injection drill rod, the slurry injection pump is fixedly arranged on the mixing container, one end of the slurry injection pump is connected with the slurry injection drill rod, and the other end of the slurry injection pump is communicated with the mixing container through a pipeline, so as to send the slurry in the mixing container into the slurry injection drill rod; a microporous aeration disc is arranged at the bottom end of the mixing container, the gas source device is communicated with the aeration disc through a pipeline, so as to send gas to the aeration disc, and the gas can rise into the slurry after escaping from the micropores of the aeration disc.

3. An air-lift agitator grouting reinforcement apparatus according to claim 1, wherein A ceramic ball anti-settling layer is arranged above the aeration disc in the mixing container, the ceramic ball anti-settling layer is composed of porous ceramic balls and is arranged in a vertical stacking mode in the mixing container.

4. An air-lift agitator grouting reinforcement apparatus according to claim 3, wherein The mixing container comprises an inner cylinder and an outer cylinder, an alumina ceramic layer is sprayed on the side wall of the inner cylinder, the ceramic ball anti-settling layer is arranged in the inner cylinder, the bottom end of the inner cylinder is communicated with the bottom end of the outer cylinder, the upper end of the inner cylinder is lower than the upper end of the outer cylinder, and a connecting rib is arranged between the inner cylinder and the outer cylinder.

5. A method of implementing an air-lifted agitator grouting reinforcement device, applied to the air-lifted agitator grouting reinforcement device according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: S1, positioning and leveling; moving the reinforcing equipment to the rock mass fracture to be grouted and horizontally fixing the slurry injection drill rod; S2, pouring reaction liquid into the first reaction liquid container and the second reaction liquid container respectively, and pretreating the reaction liquid; S3, mixing the first reaction liquid and the second reaction liquid to form a slurry, and providing the slurry to the slurry injection drill rod, so as to facilitate the filling operation of the rock mass fracture to be grouted.

6. The method of implementing an airlift agitator grouting reinforcement apparatus according to claim 5, wherein, The operation process of the step S1 is as follows: The reinforcing equipment is moved to the preset position; Three-dimensional scanning modeling; starting the laser SLAM positioning system to generate a three-dimensional point cloud model through three-dimensional scanning modeling; Hydraulic support horizontal adjustment; based on the generated three-dimensional point cloud model, the ground flatness of the current position is evaluated, and the hydraulic support is controlled to stretch and adjust, so as to realize the rapid leveling of the slurry injection drill rod; wherein, the reinforcing equipment is provided with a plurality of groups of hydraulic supports around the slurry injection drill rod, each group of hydraulic supports is provided with an inclination sensor, the inclination sensor monitors the inclination angle of the hydraulic support in real time, and the inclination angle data is fed back to the control module.

7. The method of claim 5, wherein the method is implemented by a gas-lift agitator grouting reinforcement apparatus, characterized in that, The operation process of the step S2 is as follows: The first reaction liquid container and the second reaction liquid container are filled with raw materials of a preset ratio, so as to form the first reaction liquid and the second reaction liquid in the first reaction liquid container and the second reaction liquid container respectively; The temperature of the first reaction liquid is controlled by the control unit; After the raw material filling of the first reaction liquid container is completed, the temperature of the first reaction liquid in the first reaction liquid container is controlled by the control unit, and the control unit is a combined structure of a semiconductor refrigeration sheet and a nichrome heating element; The pH value of the first reaction liquid is dynamically adjusted; the first reaction liquid container is provided with a pH sensor, and when the pH sensor detects that the pH value of the first reaction liquid deviates from the target range of 7.5-8.5, a control module triggers an adjustment mechanism to control a liquid adding pump to add a pH value adjusting liquid into the first reaction liquid container.

8. The method of claim 5, wherein the gas-lift agitator grouting reinforcement apparatus is implemented as a gas-lift agitator grouting reinforcement apparatus according to any one of claims 1 to 7. The operation process of the step S3 is as follows: The first reaction liquid and the second reaction liquid are pre-mixed; the first reaction liquid and the second reaction liquid are synchronously conveyed into a pre-mixing chamber for pre-mixing operation; Gas is conveyed into the mixing container to fully mix the two kinds of reaction liquids to form a slurry; the pre-mixed first reaction liquid and the second reaction liquid are conveyed into the mixing container through a pipeline at the bottom end of the mixing container, and after the gas source device is started, the first reaction liquid and the second reaction liquid in the mixing container are fully mixed to form a slurry by using the rising method of gas in liquid.

9. A method of implementing an airlift agitator grouting reinforcement device according to claim 8, characterized in that, The operation process of the step S3 further includes: The pulp in the mixing container is subjected to anti-settling control; through the synergistic effect of the pore structure of the ceramic ball layer and the ultrasonic vibration plate, based on Stokes law , the particle settling speed in the pulp is reduced; wherein the mixing container is biased to the bottom, and an ultrasonic vibration plate is installed above the aeration disc, represents the particle settling speed, is the particle diameter, and are the densities of the particle and the fluid respectively, is the acceleration of gravity, is the fluid dynamic viscosity.

10. The method of claim 8, wherein the method is implemented by a gas-lift agitator grouting reinforcement apparatus, characterized in that, The operation process of the step S3 further includes: PVA fibers are mixed in the slurry to form a fiber-reinforced slurry; when the crack width is less than 1 mm, the grouting drill rod is controlled to inject pure slurry into the rock crack; when the crack width is greater than or equal to 1 mm, the grouting drill rod is controlled to inject fiber-reinforced slurry into the rock crack; wherein the reinforcement device further includes a PVA fiber releaser arranged in the grouting drill rod for providing short-cut polyvinyl alcohol fibers.

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