A two-component polymer extraction grouting reinforcement device and method for deep-seated highway damage

Abstract

The present invention relates to the technical field of grouting reinforcement for deep-seated highway defects, and specifically to a two-component polymer extraction grouting reinforcement device and method for deep-seated highway defects, comprising a stirring mechanism and a grouting mechanism, wherein the stirring mechanism comprises a stirring barrel and a liquid blowing assembly, wherein a stirring assembly is rotatably provided inside the stirring barrel, a grid is symmetrically provided inside the stirring barrel, and liquid infusion assemblies corresponding to the grid are symmetrically provided on both sides of the stirring barrel, and the grouting mechanism comprises a pressure grouting machine and a drilling rig. The present invention can ensure that the slurry is evenly distributed in the reinforcement area of the deep soil layer of the roadbed, thereby improving the grouting reinforcement effect on deep-seated highway defects. By performing multi-hole extraction grouting on the deep soil layer of the roadbed, a larger effective grouting reinforcement area can be obtained, and a uniform mixed slurry of different component polymers in corresponding proportions can be automatically injected into the deep-seated highway defects at a constant pressure, a fixed quantity, and a fixed cross-section.

Description

Technical Field

[0001] The invention relates to the technical field of grouting reinforcement for deep-seated defects in highways, and in particular to a two-component polymer extraction grouting reinforcement device and method for deep-seated defects in highways. Background Art

[0002] In road construction, the stability of the deep subgrade plays a vital role in ensuring road safety and long-term use. However, in areas with poor soil conditions, the deep subgrade soil may be unstable and lack sufficient bearing capacity, which can seriously impact road use and maintenance. To address this issue, grouting reinforcement technology is widely used to treat and improve the deep subgrade soil.

[0003] Deep grouting reinforcement of roadbed soil involves injecting traditional cement-based grouting or chemically cured materials deep below the surface to improve the soil's bearing capacity and stability. In practical engineering, the deep grouting reinforcement process requires careful consideration of factors such as the soil's mechanical properties, the choice of grouting materials, and the construction process. A well-designed grouting reinforcement solution can effectively improve the soil's bearing capacity and stability, ensuring the long-term safety and reliability of roads.

[0004] Permeable polymers, with their unique properties of low viscosity, high permeability, strong bonding, and relatively strong toughness and strength, are increasingly being used to reinforce loose media. During grouting, the interior of the grouting hole must be kept under pressure to ensure sufficient diffusion of the slurry within a defined area. However, existing techniques using point injection or patterned grouting cannot ensure uniform slurry diffusion along the grouting pipe, and the grouting range is limited, resulting in low efficiency and ineffective grouting for deep-seated roadbed soil reinforcement. Summary of the Invention

[0005] In order to solve the problem that the existing technology adopts point injection or flower tube grouting methods that cannot ensure the uniform diffusion of slurry along the grouting pipe direction, and the grouting reinforcement effect of deep soil of roadbed is not ideal, the present invention provides a two-component polymer extraction grouting reinforcement device and method for deep-layer diseases of highway, which can ensure that the slurry is evenly distributed in the reinforcement area of deep soil of roadbed, improve the grouting reinforcement effect of deep soil of roadbed, and obtain a larger effective grouting reinforcement area by performing multi-hole extraction grouting on the deep soil of roadbed, and can realize constant pressure, quantitative, fixed section and automatic injection of uniformly mixed slurry with corresponding proportions of different component polymers into the deep soil of roadbed.

[0006] To achieve the above objectives, the technical solution of the present invention is: a two-component polymer extraction grouting reinforcement device and method for deep-seated road damage, comprising a control computer, a stirring mechanism, and a grouting mechanism. The stirring mechanism comprises a stirring barrel and a liquid blowing assembly. The stirring barrel has a rotating stirring assembly disposed within it, and a grid is symmetrically disposed within the stirring barrel. Infusion assemblies corresponding to the grid are symmetrically disposed on both sides of the stirring barrel. The infusion assembly is used to transport polymer slurry into the stirring barrel. Both the stirring assembly and the liquid blowing assembly stir and mix the two different polymer slurries, thereby promoting mixing of the two different polymer slurries and providing a grouting reinforcement effect for the deep soil layer of the roadbed.

[0007] The grouting mechanism includes a pressure grouting machine and a drilling rig. The pressure grouting machine is connected to a slurry suction pipe and a slurry discharge pipe. The slurry suction pipe is connected to a mixing barrel. The slurry discharge pipe is connected to a feed pipe. The end of the feed pipe is connected to a diversion pipe. The diversion pipe is connected to at least one diversion hose. The pressure grouting machine provides power for the transportation of the mixed slurry.

[0008] The drilling rig includes a drill rod, which has an internal hollow structure. One end of the drill rod is connected to a diversion hose and the other end is provided with a grouting outlet. The drill rod serves as a grouting pipeline to ensure the overall stability of the slurry delivery pipeline when the drilling rig rotates the drill rod.

[0009] Furthermore, the stirring assembly includes a stirring rod rotatably arranged in a stirring barrel, the stirring rod is a structure with a hollow interior and open ends, and the outer wall of the stirring rod is provided with a plurality of stirring blades, which are driven to rotate by the rotation of the stirring rod so that the stirring blades can stir and mix the two different component polymer slurries.

[0010] Furthermore, the liquid blowing assembly includes an air pump, the output end of the air pump is connected to a blowing pipe, the blowing pipe is connected to a branch pipe, one end of the branch pipe passes through the cover of the mixing barrel and extends into the mixing barrel, the branch pipe is located between the grid and the stirring rod. Under the action of the air pump, high-flow rate gas is pumped into the mixing barrel through the blowing pipe and the branch pipe to cause the two different components of polymer slurry inside the mixing barrel to roll, thereby promoting rapid mixing of the two different components of polymer slurry.

[0011] Furthermore, there are two infusion components, each of which includes a storage barrel and a slurry delivery pipe. One end of the slurry delivery pipe is connected to the stirring barrel, and the other end extends into the storage barrel. The slurry delivery pipe is provided with a pressure pump, a first slurry stop valve and a slurry delivery flow meter. The pressure pump and the slurry delivery flow meter are both connected to the control computer through wires. Two polymer slurries with different components are delivered through the infusion component. The pressure pump provides power for the delivery of the polymer slurry. The slurry delivery flow meter is used to detect the flow rate of the polymer slurry delivered to the stirring barrel.

[0012] Furthermore, one end of the grouting pipe extends into the stirring rod and is connected to the stirring barrel. A grouting pressure gauge, a grouting flow meter and a second grouting stop valve are provided on the feed pipe. The grouting pressure gauge and the grouting flow meter are connected to the control computer through wires. The grouting pressure gauge is used to detect the grouting pressure, and the grouting flow meter is used to detect the grouting flow.

[0013] Furthermore, the diversion pipe is connected to two diversion hoses, the number of the diversion hoses is the same as the drill rod, the upper end of the drill rod is provided with a bearing, and the drill rod is connected to the diversion hose through the bearing.

[0014] The grouting method based on the above-mentioned two-component polymer extraction grouting reinforcement device for deep-seated highway damage includes the following steps:

[0015] Step 1: Use a drilling rig to drill the drill rod into the predetermined depth of the deep soil of the roadbed and fix it, and connect the drill rod to the diversion hose.

[0016] Step 2: Place polymer slurries of different components in the storage barrels of the two infusion components, open the pressure pump and the first slurry stop valve on the slurry delivery pipe, and deliver the polymer slurry to the mixing barrel through the slurry delivery pipe.

[0017] Step 3: Turn on the air pump to pump high-flow gas into the stirring barrel through the branch pipe, and rotate the stirring rod in the stirring barrel to stir and mix the two different components of the polymer slurry.

[0018] Step 4: After stirring and mixing the two different components of polymer slurry for 30 to 60 seconds, use the control computer to turn on the pressure grouting machine. After the grouting pressure gauge and grouting flow meter show values, the slurry delivery channel is established.

[0019] Step 5: Use the control computer to set the predetermined grouting rate and maximum grouting pressure, and adjust the grouting pressure of the pressure grouting machine.

[0020] Step 6: Open the second slurry stop valve and start grouting into the grouting section, and continue to stir and mix the two different components of polymer slurry during the grouting process.

[0021] Step 7: If the pressure value displayed on the grouting pressure gauge remains unchanged during the grouting process, and the flow value displayed on the grouting flow meter is too small and lasts for more than 60 seconds, the pressure grouting machine will maintain pressure. Control the drill rod rotation through the drilling rig, observe whether the pressure value displayed on the grouting pressure gauge and the flow value displayed on the flow meter change, and determine whether grouting can continue.

[0022] Step 8: If the grouting section reaches the designed grouting volume or the pressure grouting machine continues to maintain pressure, the drill rod will be withdrawn 0.15 to 0.3 m through the drilling rig to start grouting work on the next grouting section until the grouting work is completed.

[0023] Furthermore, in the step 2, after the polymer slurry is transported to the mixing barrel through the slurry pipe, it impacts the grid and is divided into multiple streams of polymer slurry.

[0024] Furthermore, in step 7, the grouting pressure gauge is used to detect the grouting pressure, and the grouting flow meter is used to detect the grouting flow.

[0025] Through the above technical solution, the beneficial effects of the present invention are:

[0026] The present invention can ensure that the slurry is evenly distributed in the roadbed deep soil reinforcement area, improve the grouting reinforcement effect of the roadbed deep soil, and obtain a larger effective grouting reinforcement area by performing multi-hole extraction grouting on the roadbed deep soil. It can realize constant pressure, quantitative, fixed section, and automatic injection of uniformly mixed slurry with corresponding proportions of different component polymers into the roadbed deep soil. Through the pressure maintaining mechanism of the pressure grouting machine, as well as the grouting pressure gauge and the grouting flow meter, it is comprehensively judged whether the polymer slurry injected into the grouting section meets the expected grouting requirements, so as to obtain a larger effective grouting reinforcement area with more uniform polymer slurry diffusion under the condition of fixed grouting parameters.

[0027] The pressure grouting machine of the present invention provides power for conveying slurry, and both the stirring component and the liquid blowing component play the role of stirring and mixing two polymer slurries with different components, so as to promote the mixing of the two polymer slurries with different components, wherein the stirring rod of the stirring component rotates to drive the stirring blade to rotate, so that the stirring blade plays the role of stirring and mixing the two polymer slurries with different components; the liquid blowing component pumps high-flow rate gas into the stirring barrel through the blowing pipe and the branch pipe, so as to make the two polymer slurries with different components in the stirring barrel roll, so as to promote the rapid mixing of the two polymer slurries with different components; the polymer slurry is conveyed to the stirring barrel through the slurry conveying pipe and then hits the grid, and the grid divides one polymer slurry into multiple polymer slurries, so as to promote the mixing of the two polymer slurries with different components. Under the triple stirring action of the grid, pneumatic and rotation, the two polymer slurries with different components can be fully mixed in a short time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic structural diagram of a two-component polymer extraction grouting reinforcement device for deep-seated road diseases.

[0029] The numbers in the attached figure are: 1 is a storage barrel, 2 is a slurry delivery pipe, 3 is a pressure pump, 4 is a first slurry stop valve, 5 is a slurry delivery flow meter, 6 is a mixing barrel, 7 is a stirring rod, 8 is a stirring blade, 9 is a grille, 10 is an air pump, 11 is a branch pipe, 12 is a pressure grouting machine, 13 is a slurry suction pipe, 14 is a slurry outlet pipe, 15 is a feed pipe, 16 is a grouting pressure gauge, 17 is a grouting flow meter, 18 is a second slurry stop valve, 19 is a diversion pipe, 20 is a diversion hose, 21 is a drilling rig, 22 is a drill rod, 23 is a bearing, and 24 is a control computer. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0031] like Figure 1 As shown, a two-component polymer extraction and grouting reinforcement device and method for deep-seated road diseases includes a control computer 24, a stirring mechanism and a grouting mechanism, the stirring mechanism includes a stirring barrel 6 and a liquid blowing component, the stirring barrel 6 includes a cover plate on its top, and handles can be symmetrically installed on the cover plate to open the stirring barrel 6, and a stirring component is rotatably arranged inside the stirring barrel 6, and the stirring component has a stirring and mixing function for the polymer slurry in the stirring barrel 6, and the interior of the stirring barrel 6 is symmetrically provided with grilles 9, and the number of grilles 9 is two, wherein two groups of fixing blocks are installed on the inner wall of the stirring barrel 6, and the fixing blocks are provided with slots, and the two sides of the grille 9 are respectively clamped in the slots on the fixing blocks, and the two sides of the stirring barrel 6 are symmetrically provided with infusion components corresponding to the grilles 9, and the two infusion components are used to transport two different component polymer slurries to the stirring barrel 6.

[0032] The grouting mechanism includes a pressure grouting machine 12 and a drilling rig 21. The pressure grouting machine 12 is connected to the control computer 24 through a wire. The pressure grouting machine 12 is connected to a slurry suction pipe 13 and a slurry discharge pipe 14. The slurry suction pipe 13 is connected to the mixing barrel 6. The slurry discharge pipe 14 is connected to a feed pipe 15. The slurry outlet of the slurry discharge pipe 14 is wrapped with a waterproof sealing strip and is connected to the slurry inlet of the feed pipe 15. The end of the feed pipe 15 is connected to a diversion pipe 19. The slurry inlet and slurry outlet of the diversion pipe 19 are both wrapped with waterproof sealing strips. The diversion pipe 19 is connected to at least one diversion hose 20. The slurry outlet of the diversion hose 20 is wrapped with a waterproof sealing strip. In this embodiment, after the pressure grouting machine 12 is started, the mixed slurry in the mixing barrel 6 is transported to the diversion pipe 19 in sequence through the slurry extraction pipe 13, the slurry discharge pipe 14 and the feed pipe 15. The diversion pipe 19 diverts the mixed slurry and transports it to the diversion hose 20, wherein the diversion pipe 19 is used to evenly divide the mixed slurry in the feed pipe 15 into multiple streams. The diversion pipe 19 is a "one inlet and multiple outlets" design, and the number of outlets of the diversion pipe 19 matches the number of drill rods 22 of the drilling rig 21.

[0033] The drilling rig 21 includes a drill rod 22 having a hollow interior. One end of the drill rod 22 is connected to the diverter hose 20, and the other end is provided with a grouting outlet. The drilling rig 21 is connected to a control computer 24 via a wire. In this embodiment, the drilling rig 21 is used to drill the drill rod 22 into the deep soil of the roadbed and secure the drill rod 22, facilitating subsequent rotation and extraction of the drill rod 22. The drill rod 22 is made of steel. A mixed slurry of two different polymer components can flow into the drill rod 22 through the diverter hose 20, where the mixed slurry is transported within the drill rod 22. The diameter of the grouting outlet is smaller than the diameter of the drill bit of the drill rod 22. This allows the drill bit to seal the grouting hole drilled by the drill rod 22 during the grouting process, maintaining pressure at the grouting outlet. The drill rod 22 is drilled into the deep soil of the roadbed by the drilling rig 16, and the mixed slurry is injected into the deep soil of the roadbed at the end of the drill rod 22.

[0034] The stirring assembly includes a stirring rod 7 rotatably arranged in the stirring barrel 6, the stirring rod 7 is a structure with a hollow interior and open ends, and the outer wall of the stirring rod is provided with a plurality of stirring blades 8. In this embodiment, the stirring rod 7 is driven to rotate by a driving assembly, and the stirring rod 7 is rotatably connected to the cover plate of the stirring barrel 6 through a bearing. The driving assembly is installed on the top of the cover plate of the stirring barrel 6. The driving assembly includes a reduction motor, a driving gear and a driven gear. The output end of the reduction motor is connected to the driving gear, and the driven gear is sleeved on the upper end of the stirring rod 7, wherein the upper end of the stirring rod 7 extends to the outside of the stirring barrel 6, and the driving gear is meshed with the driven gear; the outer wall of the stirring rod 7 is installed with three groups of stirring blades 8, each group includes two stirring blades 8, and is symmetrically installed on the outer wall of the stirring rod 7. The lower part of the stirring blade 8 at the bottom of the stirring rod 7 extends to the bottom of the stirring rod 7, the purpose of which is to improve the stirring and mixing effect of the two different components of the polymer slurry. Five reinforcement rings are also fixedly installed inside the stirring rod 7.

[0035] The liquid blowing assembly includes an air pump 10, which is connected to the control computer 24 via a wire. The output end of the air pump 10 is connected to an air blowing pipe, and the air blowing pipe is connected to a branch pipe 11. One end of the branch pipe 11 passes through the cover of the mixing barrel 6 and extends into the mixing barrel 6. The branch pipe 11 is located between the grille 9 and the stirring rod 7. In this embodiment, there are two branch pipes 11, which are respectively located on the inner sides of the two grilles 9.

[0036] There are two infusion components, which include a storage barrel 1 and a slurry delivery pipe 2. One end of the slurry delivery pipe 2 is connected to the mixing barrel 6, and the other end extends into the storage barrel 1. A pressure pump 3, a first slurry stop valve 4 and a slurry delivery flow meter 5 are provided on the slurry delivery pipe 2. The pressure pump 3 and the slurry delivery flow meter 5 are both connected to the control computer 24 through a wire. The amount of polymer slurry delivered to the mixing barrel 6 can be controlled by cooperating with the control computer 24, the pressure pump 3 and the slurry delivery flow meter 5. The pressure pump 3 is a high polymer slurry delivery pipe. The polymer slurry is transported to the stirring barrel 6 to provide power, and the slurry flow meter 5 is used to detect the flow of the polymer slurry transported to the stirring barrel 6; the two storage barrels 1 are used to store polymer slurries of different components, and the polymer slurry A in one storage barrel 1 is isocyanate slurry, and the specific components are polymethylene polyphenyl polyisocyanate and toluene diisocyanate; the polymer slurry B in the other storage barrel 1 is polyol slurry, and the specific components are polyether polyol, surfactant and dimethylformamide (nHO~OH).

[0037] One end of the grouting pipe 13 extends into the stirring rod 7 and is connected to the stirring barrel 6. The delivery pipe 15 is provided with a grouting pressure gauge 16, a grouting flow meter 17 and a second grouting stop valve 18. The grouting pressure gauge 16 and the grouting flow meter 17 are connected to the control computer 24 through wires. The grouting pressure gauge 16 is used to detect the grouting pressure, and the grouting flow meter 17 is used to detect the grouting flow. According to the values displayed by the grouting pressure gauge 16 and the grouting flow meter 17, it can be judged whether it is necessary to control the drill rod 22 through the drilling rig 21 to perform extraction and rotation.

[0038] The diversion pipe 19 is connected to two diversion hoses 20 . The number of the diversion hoses 20 is the same as the number of the drill rods 22 . A bearing 23 is provided at the upper end of the drill rod 22 . The drill rod 22 is connected to the diversion hose 20 via the bearing 23 .

[0039] The grouting method based on the above-mentioned two-component polymer extraction grouting reinforcement device for deep-seated highway damage includes the following steps:

[0040] Step 1: Use a drilling rig 21 to drill a drill rod 22 into the deep soil of the roadbed to a predetermined depth and fix it, and connect the drill rod 22 to the diversion hose 20.

[0041] Step 2: Place polymer slurry of different components in the storage barrels 1 of the two infusion components, and open the pressure pump 3 and the first slurry stop valve 4 on the slurry pipe 2, and transport the polymer slurry to the mixing barrel 6 through the slurry pipe 2. After the polymer slurry is transported to the mixing barrel 6 through the slurry pipe 2, it hits the grid 9 and is divided into multiple streams of polymer slurry.

[0042] The first stop valve 4 is used to open the slurry pipe 2 to transport the polymer slurry to the mixing barrel 6. The pressure pump 3 is controlled by the control computer 24. The polymer slurries of different components are polymer slurry A and polymer slurry B. If the grouting volume of the deep soil grouting area of the roadbed is N tons, and the ratio of polymer slurry A to polymer slurry B is 1 to C, then the grouting volume of polymer slurry A is The injection volume of polymer slurry B is By adjusting the pressure pumps 3 on the two slurry delivery pipes 2, the mixed slurry delivered by the subsequent material delivery pipe 15 can meet the ratio.

[0043] Step 3: Turn on the air pump 10 to pump high-flow gas into the mixing barrel 6 through the branch pipe 11. The air pump 10 generates high-flow gas, which is transported to the mixing barrel 6 through the blowing pipe and the branch pipe, and the stirring rod 7 is rotated in the mixing barrel 6 to stir and mix the two different components of the polymer slurry. The driving component drives the stirring rod 7 to rotate, and the stirring rod 7 drives the stirring blade 8 to rotate in the mixing barrel 6 to stir and mix the polymer slurry A and the polymer slurry B.

[0044] Step 4: After the two different components of polymer slurry are stirred and mixed for 30 to 60 seconds, the pressure grouting machine 12 is turned on by the control computer 24. After the grouting pressure gauge 16 and the grouting flow meter 17 show values, the slurry delivery channel is established.

[0045] Step 5: Use the control computer 24 to set the predetermined grouting rate and the maximum grouting pressure, and adjust the grouting pressure of the pressure grouting machine 12. The grouting pressure can be adjusted by controlling the pressure grouting machine 12 through the control computer 24, or by adjusting the grouting pressure through the pressure knob on the pressure grouting machine 12.

[0046] Step 6: Open the second stop valve 18 and start grouting the grouting section. During the grouting process, the two different polymer slurries are continuously stirred and mixed. If the vertical direction of the deep soil grouting reinforcement area of the roadbed is L meters from top to bottom, and each grouting section is d meters, then the number of grouting sections is L / d, and the number of synchronous grouting drill rods 22 is n. Then the grouting volume of each drill rod 22 is N / n tons, and the total grouting volume of the grouting section is Therefore, the grouting amount of each grouting section of each drill rod 22 is

[0047] Step 7: If the pressure value displayed on the grouting pressure gauge 16 remains unchanged during the grouting process, and the flow value displayed on the grouting flow meter 17 is too low and lasts for more than 60 seconds, the pressure grouting machine 12 will maintain pressure. The drill rig 21 will control the rotation of the drill rod 22, and observe whether the pressure value displayed on the grouting pressure gauge 16 and the flow value displayed on the flow meter 17 have changed. Then, it is determined whether grouting can continue. The grouting pressure gauge 16 is used to detect the grouting pressure, and the grouting flow meter 17 is used to detect the grouting flow.

[0048] Step 8: If the grouting section reaches the designed grouting volume or the pressure grouting machine 12 continues to maintain pressure, the drill rod 22 is withdrawn 0.15 to 0.3 m through the drilling rig 21 to start grouting work on the next grouting section until the grouting work is completed.

[0049] During the grouting process of the grouting section, due to the unevenness of the deep soil of the roadbed, the grouting flow meter 17 may fluctuate greatly. If the grouting flow meter 17 shows the flow rate as q(t), in milliliters per second, which changes with time; t is the grouting time in seconds, and the control computer 24 records the data of the grouting flow meter 17, then in the time period t, the grouting volume Q is the sum of the slurry flowing through the feed pipe 15, that is, The average grouting rate in time period t is for The slurry density is ρ, and the estimated total grouting time T for the section is Remaining grouting time of section T r for The time parameter is output by the control computer 24 and is a reference value for the cross-section grouting time.

[0050] In order to prevent the mixed polymer slurry from clogging the drill rod 22, the drill rod 22 should be rotated continuously during the grouting process, and the number of rotations of the drill rod 22 should be proportional to the injection volume of the grouting section. The proportional coefficient is k, and the unit of k is times per ton, that is, the number of rotations m per grouting section of each drill rod 22 is Drill pipe rotation time interval T k for Holding state judgment pressure q c for

[0051] The above parameters are continuously updated as the grouting process of the grouting section progresses. When the grouting time of the grouting section reaches T k When the control computer 24 controls the drilling machine 21 to rotate the drill rod 22 once, the rotation of the drill rod 22 should be no less than two weeks. It should be noted that when the value p displayed on the grouting pressure gauge 16 remains unchanged, the value q displayed on the grouting flow meter 17 decreases to q c If the pressure is below 0.05 and lasts for more than 60 seconds, it means that a drill rod 22 in the grouting section is in a pressure-maintaining state. At this time, the drill rod 22 is rotated, and the rotation process can break the pressure-maintaining state of the head of the drill rod 22.

[0052] In the grouting method of the two-component polymer extraction grouting reinforcement device for deep-seated road damage provided by the present invention, the parameter values that can be taken are as follows:

[0053] k: Generally, the value is 5, 10, or 15. If the pressure maintenance situation persists and the grouting flow meter 17 shows that the value drops significantly several times within a short period of time, then k is 15. If there is no or little pressure maintenance situation and the grouting flow meter 17 shows that the value is relatively stable, then k is 5. Generally, a value of 10 basically meets the rotation requirements of the drill rod 22.

[0054] L: The length of the deep soil grouting reinforcement area of the roadbed is usually 3 to 6 meters, which is determined based on the actual project.

[0055] ρ: The density of two-component polymer slurry is usually 1.05±0.05 grams per milliliter.

[0056] d: The length of each grouting section is usually 0.15 to 0.3 meters, which is determined based on the actual project. When the grouting reinforcement area is deeper, a larger value is taken, otherwise, a smaller value is taken.

[0057] q: The grouting rate is usually 0 to 30 ml per second, and the value should be determined based on the actual situation in the deep soil area of the grouting roadbed, the grouting diffusion method and the power of the pressure grouting machine.

[0058] In the grouting method of the two-component polymer extraction grouting reinforcement device for deep-seated road diseases of the present invention, waterproof sealing strips are required at the interconnection positions of each pipeline.

[0059] The embodiments described above are only preferred embodiments of the invention and do not limit the scope of implementation of the invention. Therefore, any equivalent changes or modifications made according to the technical solutions described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A two-component polymer extraction grouting reinforcement device for deep-seated road damage, comprising a control computer (24), characterized in that: It also includes a stirring mechanism and a grouting mechanism, the stirring mechanism includes a stirring barrel (6) and a liquid blowing component, the stirring barrel (6) is provided with a stirring component for rotation, the stirring barrel (6) is provided with a grid (9) symmetrically arranged inside, and the two sides of the stirring barrel (6) are provided with liquid infusion components corresponding to the grid (9) symmetrically arranged; The grouting mechanism comprises a pressure grouting machine (12) and a drilling machine (21); the pressure grouting machine (12) is connected to a grouting pipe (13) and a grouting outlet pipe (14); the grouting pipe (13) is connected to a mixing barrel (6); the grouting outlet pipe (14) is connected to a feed pipe (15); the end of the feed pipe (15) is connected to a diversion pipe (19); the diversion pipe (19) is connected to at least one diversion hose (20); The drilling rig (21) includes a drill rod (22), the drill rod (22) having an internal hollow structure, one end of the drill rod (22) being connected to the diversion hose (20), and the other end of the drill rod (22) being provided with a grouting outlet; The feed pipe (15) is provided with a grouting pressure gauge (16) and a grouting flow meter (17), and the grouting pressure gauge (16) and the grouting flow meter (17) are connected to the control computer (24) through a wire. According to the values displayed by the grouting pressure gauge (16) and the grouting flow meter (17), it is determined whether it is necessary to control the drill rod (22) to perform extraction and rotation through the drilling rig (21); During the grouting process, the drill rod (22) should be rotated continuously, and the number of rotations of the drill rod (22) should be proportional to the injection volume of the grouting section, and the proportional coefficient is , The unit is times per ton, that is, the number of rotations per grouting section per drill rod (22) , the rotation time interval of the drill rod (22) ; When the grouting time of the grouting section reaches When the control computer (24) controls the drilling machine (21) to rotate the drill rod (22) once, the rotation of the drill rod (22) is not less than two weeks. When the grouting pressure gauge (16) shows the value The grouting flow meter (17) shows the value Reduce to The following and last for more than 60 seconds, , it means that a drill rod (22) in the grouting section is in a pressure-maintaining state. At this time, the drill rod (22) is rotated, and the rotation process can break the pressure-maintaining state of the head of the drill rod (22).

2. A two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 1, characterized in that: The stirring assembly comprises a stirring rod (7) rotatably arranged in a stirring barrel (6); the stirring rod (7) is a structure with a hollow interior and open ends; and a plurality of stirring blades (8) are arranged on the outer wall of the stirring rod.

3. A two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 2, characterized in that: The liquid blowing assembly comprises an air pump (10), the output end of the air pump (10) is connected to an air blowing pipe, the air blowing pipe is connected to a branch pipe (11), one end of the branch pipe (11) passes through the cover plate of the stirring barrel (6) and extends into the stirring barrel (6), and the branch pipe (11) is located between the grille (9) and the stirring rod (7).

4. A two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 1, characterized in that: There are two infusion components, which include a storage barrel (1) and a slurry delivery pipe (2). One end of the slurry delivery pipe (2) is connected to the mixing barrel (6), and the other end extends into the storage barrel (1). A pressure pump (3), a first slurry stop valve (4) and a slurry delivery flow meter (5) are provided on the slurry delivery pipe (2). The pressure pump (3) and the slurry delivery flow meter (5) are both connected to a control computer (24) via wires.

5. The two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 2 is characterized in that: One end of the slurry extraction pipe (13) extends into the stirring rod (7) and is connected to the stirring barrel (6). A second slurry stop valve (18) is also provided on the material delivery pipe (15).

6. A two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 1, characterized in that: The diversion pipe (19) is connected to two diversion hoses (20), and the number of the diversion hoses (20) is the same as that of the drill rods (22). A bearing (23) is provided at the upper end of the drill rod (22), and the drill rod (22) is connected to the diversion hoses (20) via the bearing (23).

7. A grouting method for a two-component polymer extraction grouting reinforcement device for deep-seated road damage according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: using a drilling rig (21) to drill a drill rod (22) into a predetermined depth position in the deep soil of the roadbed and fix it, and connecting the drill rod (22) to the diversion hose (20); Step 2: Place polymer slurries of different components in the storage barrels (1) of the two infusion components, open the pressure pump (3) and the first slurry stop valve (4) on the slurry delivery pipe (2), and deliver the polymer slurry to the mixing barrel (6) through the slurry delivery pipe (2); Step 3: Turn on the air pump (10) to pump high-flow gas into the stirring barrel (6) through the branch pipe (11), and rotate the stirring rod (7) in the stirring barrel (6) to stir and mix the two different components of the polymer slurry; Step 4: After the two different polymer slurries are stirred and mixed for 30 to 60 seconds, the pressure grouting machine (12) is turned on by the control computer (24). When the grouting pressure gauge (16) and the grouting flow meter (17) show values, the slurry delivery channel is established. Step 5: using the control computer (24) to set a predetermined grouting rate and a maximum grouting pressure, and adjusting the grouting pressure of the pressure grouting machine (12); Step 6: Open the second slurry stop valve (18) and start grouting to the grouting section, and continue stirring and mixing the two different components of the polymer slurry during the grouting process; Step 7: If the pressure value displayed on the grouting pressure gauge (16) remains unchanged during the grouting process, and the flow value displayed on the grouting flow meter (17) is too small and lasts for more than 60 seconds, the pressure grouting machine (12) will maintain pressure, and the drill rod (22) will be controlled to rotate by the drilling rig (21). The pressure value displayed on the grouting pressure gauge (16) and the flow value displayed on the flow meter (17) will be observed to see if they change, and it will be determined whether the grouting can continue. Step 8: If the grouting section reaches the designed grouting volume or the pressure grouting machine (12) continues to maintain pressure, the drill rod (22) is withdrawn 0.15 to 0.3 m through the drilling rig (21) to start grouting work on the next grouting section until the grouting work is completed.

8. The grouting method of the two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 7, characterized in that: In the step 2, the polymer slurry is transported to the stirring barrel (6) through the slurry delivery pipe (2), and then impacts the grid (9) to be divided into multiple streams of polymer slurry.

9. The grouting method of the two-component polymer extraction grouting reinforcement device for deep-seated road damage according to claim 7, characterized in that: In step 7, the grouting pressure gauge (16) is used to detect the grouting pressure, and the grouting flow meter (17) is used to detect the grouting flow.

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