Foundation grouting reinforcement foam concrete light embankment in rail transit protection area and construction method

Abstract

The invention relates to a rail transit protection area foundation grouting reinforcement foam concrete light embankment and a construction method. The construction method comprises the following steps that geological survey is conducted, and dangerous factors are eliminated; excavating a base layer, and installing anchor cables with different lengths as required; treating the bottom and laying a functional layer; mounting a steel bar net rack and a template; foam concrete is injected through a grouting device to be solidified; the mold is removed and maintained, and the formed surface is treated; and spraying and mounting a protective surface layer material. The foam concrete grouting device has the beneficial effects that rapid grouting can be conveniently carried out through the grouting device, rapid and stable grouting of foam concrete is guaranteed, and the working requirement is met; the gas supply mixing mechanism, the disturbance mechanism, the stirring mechanism and the power mechanism are integrated to form the grouting device, and the grouting device is integrated, so that the grouting device can complete grouting more efficiently; and through the staggered reinforcing ribs, the side wall is firmer and more reliable, and construction is safer.

Description

Technical Field

[0001] The present invention belongs to the field of road construction, and particularly relates to a foamed concrete lightweight embankment with ground grouting reinforcement in a rail transit protection area and a construction method thereof. Background Art

[0002] The rail transit protection area refers to a specific area demarcated around urban rail transit facilities to ensure their safe operation. Construction activities within this area are strictly regulated to prevent external factors from damaging or interfering with the rail transit facilities. When constructing within the rail transit protection area, it is necessary to file a report, and the corresponding construction needs to be different from that in other places. In existing construction, conventional concrete is still widely used, which makes the overall weight of the construction area relatively large, and has strict requirements for the foundation laying. As a result, the subsequent continuous impact on the rail transit area is relatively large, and it is not convenient for subsequent maintenance. To solve the above problems, a new type of embankment and construction method are urgently needed. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a foamed concrete lightweight embankment with ground grouting reinforcement in a rail transit protection area and a construction method thereof.

[0004] This kind of foamed concrete lightweight embankment with ground grouting reinforcement in a rail transit protection area includes: a functional layer, transverse rods, and anchor cables; symmetric side walls are connected to both sides of the functional layer, and staggered reinforcing ribs are connected to the inner side walls of the side walls; transverse reinforcing ribs are connected between the vertical reinforcing ribs; the transverse rods are arranged on the top of the functional layer, and vertical rods are arranged between the transverse rods; one end of the anchor cable is connected to the outer side wall of the side wall, and the other end of the anchor cable is connected with an abrasion-increasing cover.

[0005] The construction method of this kind of foamed concrete lightweight embankment with ground grouting reinforcement in a rail transit protection area includes the following steps:

[0006] S1: Geological exploration to eliminate risk factors;

[0007] S2: Excavation of the base layer, and installation of anchor cables with different lengths according to needs;

[0008] S3: Bottom treatment, laying the functional layer;

[0009] S4: Install the steel bar grid and install the formwork;

[0010] S5: Inject foamed concrete using a grouting device and let it solidify;

[0011] S6: Remove the formwork and cure, and treat the formed surface;

[0012] S7: Spray and install the protective surface layer material.

[0013] Preferably, in step S5, the grouting device includes: a mounting plate, a limiting cylinder, a power mechanism and an injection nozzle; a temporary storage box is fixedly connected to the mounting plate, and one side of the temporary storage box is connected to an air supply and mixing mechanism located on the mounting plate; the limiting cylinder is fixedly connected to the functional layer, a disturbance mechanism is connected inside the limiting cylinder, and a stirring mechanism connected to the limiting cylinder is connected to the top of the disturbance mechanism; a power mechanism is provided on the functional layer, and the power mechanism is connected to a power ring; the output end of the power mechanism is connected to the air supply and mixing mechanism; the injection nozzle is connected to the air supply and mixing mechanism.

[0014] Preferably, the air supply and mixing mechanism includes: an air pump, a power pipe and a discharge pipe; the air pump is fixedly connected to the functional layer, the output end of the air pump is connected to the air supply pipe, and the other end of the air supply pipe is fixedly connected to a mixing barrel fixedly connected to the functional layer; the power pipe and the mixing barrel are rotatably connected, the power pipe is fixedly connected to a power ring, a plurality of paddles are fixedly connected to the power pipe, the paddles are arranged in the mixing barrel, and overflow holes located on the power pipe are arranged between adjacent paddles; the discharge pipe is fixedly connected to one side of the mixing barrel, and the other end of the discharge pipe is connected to the injection nozzle.

[0015] Preferably, the input end of the air pump is connected to an input pipe, and one end of the input pipe is connected to a filter plate.

[0016] Preferably, the disturbance mechanism includes: a transmission tube, a transmission assembly and a limiter; the transmission tube and the limiting cylinder are rotatably sleeved, the transmission tube is transmission-connected to the stirring mechanism, and the bottom end of the transmission tube is rotatably sleeved with a feeding tube connected to the temporary storage box; the transmission assembly and the transmission tube are transmission-connected, one end of the transmission assembly is transmission-connected to a transmission three fixedly connected to the limiting cylinder, the output end of the transmission three is transmission-connected to a transmission two, and the output end of the transmission two is transmission-connected to a boss connected to the stirring mechanism; one end of the limiter is fixedly connected to the limiting cylinder, and the other end of the limiter is connected to the stirring mechanism.

[0017] Preferably, the stirring mechanism includes: a packaging cover, a stabilizing sleeve and a discharge pipe; the packaging cover and the inner wall of the limiting cylinder are slidably connected; the stabilizing sleeve and the bottom of the packaging cover are fixedly connected, the upper side of the stabilizing sleeve is fixedly connected to a mixing rod, the outer side of the mixing rod is fixedly connected to a plurality of stirring rods, and the top end of the mixing rod is transmission-connected to a motor located in the packaging cover; one end of the discharge pipe is connected to the bottom of the packaging cover, and the other end is rotatably connected to a power ring.

[0018] Preferably, the stirring rod comprises a stabilizing tube fixedly connected to the mixing rod, a plurality of raised strips are fixedly connected to the outer side of the stabilizing tube, and a spray hole located between two raised strips is provided on the stabilizing tube.

[0019] Preferably, a mixing box in contact with the top of the boss is fixedly connected to the bottom of the packaging cover; and the stabilizing sleeve is connected to the transmission pipe through a spline transmission.

[0020] Preferably, the power mechanism includes: a second motor and a transmission rod; the second motor is fixedly connected to the functional layer, and the output end of the second motor is drivingly connected to a first transmission that is fixedly connected to the functional layer; the transmission rod is drivingly connected to the output end of the first transmission, and the other end of the transmission rod is drivingly connected to the power ring.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1) The present invention can conveniently perform rapid grouting through the grouting device, ensuring the rapid and stable grouting of foamed concrete and meeting the work requirements.

[0023] 2) By integrating the air supply and mixing mechanism, the disturbing mechanism, the stirring mechanism, and the power mechanism into a grouting device, the grouting device is integrated, enabling the grouting device to complete grouting more efficiently.

[0024] 3) Through the staggered arrangement of the reinforcing ribs, the side wall is made more firm and reliable, making the construction safer. Description of the Drawings

[0025] Figure 1 Front view schematic diagram of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area;

[0026] Figure 2 Rear view schematic diagram of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area;

[0027] Figure 3 For Figure 1 Enlarged structural schematic diagram at position A in

[0028] Figure 4 For Figure 1 Enlarged structural schematic diagram at position B in

[0029] Figure 5 Front view schematic diagram of the grouting device;

[0030] Figure 6 Rear view schematic diagram of the grouting device;

[0031] Figure 7 Side view schematic diagram of the grouting device;

[0032] Figure 8 Front view schematic diagram of the air supply and mixing mechanism;

[0033] Figure 9 Rear view schematic diagram of the air supply and mixing mechanism;

[0034] Figure 10 Front view schematic diagram of the stirring mechanism;

[0035] Figure 11 Side view schematic diagram of the stirring mechanism;

[0036] Figure 12 It is a schematic diagram of the partial structure of the stirring mechanism.

[0037] Description of the reference numerals in the drawings: 01, functional layer; 02, horizontal rod; 03, vertical rod; 04, wear-increasing cover; 05, reinforcing rib; 06, anchor cable; 07, side wall; 08, horizontal connecting rib; 09, vertical connecting rib; 13, drain pipe; 14, water-blocking layer; 15, support layer; 16, water-proof layer; 17, concrete layer; 18, water-absorbing layer; 19, fixing sleeve; 20, mounting plate; 21, temporary storage box; 22, air pump; 23, sealing cover; 24, limiting cylinder; 25, motor II; 26, transmission I; 27, mixing cylinder; 28, injection nozzle; 29, discharge pipe; 30, power ring; 31, transmission rod; 32, discharge pipe; 33, power pipe; 34, feeding pipe; 35, paddle; 36, gas transmission pipe; 37, overflow hole; 40, mixing rod; 41, mixing box; 42, convex platform; 43, transmission II; 44, transmission pipe; 45, transmission III; 46, limiter; 47, transmission component; 48, stabilizing sleeve; 49, stirring rod; 52, raised strip; 53, injection hole; 54, stabilizing pipe. Specific embodiments

[0038] The present invention will be further described below in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0039] Embodiment 1

[0040] As an embodiment, a lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area is proposed, as Figures 1-4As shown in the figure, it includes: a functional layer 01, a horizontal rod 02, and a cable 06; symmetrically arranged side walls 07 are connected to both sides of the functional layer 01, and staggered reinforcing ribs 05 are connected to the inner side walls of the side walls 07; horizontal reinforcing ribs 05 are connected between the vertical reinforcing ribs 05; the functional layer 01 is the bottom base layer, providing bottom support and bearing force, and the side walls 07 provide side support connection and bearing force, strengthening the side walls 07 and making the force uniform to ensure the stability of the side walls 07; the horizontal rod 02 is arranged on the top of the functional layer 01, and vertical rods 03 are arranged between the horizontal rods 02; the horizontal rod 02 is integrally formed with the functional layer 01, and vertical rods 03 are integrally formed and perpendicularly arranged with the horizontal rod 02. The horizontal rod 02 performs the force pulling at the bottom, realizing the force in multiple directions, ensuring the stability of the functional layer 01 and the uniform force; one end of the cable 06 is connected to the outer side wall of the side wall 07, and an abrasion-increasing cover 04 is connected to the other end of the cable 06; the end of the cable 06 is connected to the inner side wall of the side wall 07 between the horizontal reinforcing rib 05 and the adjacent horizontal reinforcing rib 05; a fixing sleeve 19 is connected to the end of the inner side wall of the side wall 07 between the adjacent horizontal reinforcing ribs 05 where the cable 06 is connected.

[0041] As Figure 2 , Figure 4 shown in the figure, multiple cables 06 are provided, which are connected to the side walls 07. An abrasion-increasing cover 04 is connected to one end of the cable 06. Some cables 06 are connected to the reinforcing ribs 05, and a fixing sleeve 19 is connected to one end of some cables 06. The cables 06 perform peripheral pulling to further ensure the stability of the side walls 07 and the overall force. The length of the cables 06 is selected according to specific surveys. The fixing sleeve 19 and the abrasion-increasing cover 04 are selectively installed as needed to ensure the stable force.

[0042] As Figure 3 shown in the figure, the functional layer 01 includes vertical connecting ribs 09 connected to the side walls 07. A horizontal connecting rib 08 connected to the reinforcing ribs 05 is fixedly connected to one side of the vertical connecting ribs 09. A concrete layer 17, a water-absorbing layer 18, a water-blocking layer 14, a support layer 15, and a water-proof layer 16 are sequentially arranged between the horizontal connecting rib 08 and the vertical connecting rib 09. A drain pipe 13 is installed between the water-absorbing layer 18 and the drain pipe 13. The vertical connecting ribs 09 perform side connection, and the horizontal connecting ribs 08 perform horizontal connection, thus realizing the overall installation connection. The concrete layer 17 collects and diverts water, and at the same time, the porous concrete layer 17 allows water to seep through to ensure the passage of water. The water-absorbing layer 18 performs buffer flexible support, and at the same time, the water above seeps into the drain pipe 13 and is collected and discharged. The water-blocking layer 14 performs water blocking and flexible support, and the support layer 15 bears the main force. The water-proof layer 16 performs bottom water-proof protection.

[0043] Embodiment 2

[0044] As another embodiment, this second embodiment is proposed on the basis of the first embodiment. A construction method for a lightweight embankment of foamed concrete for ground grouting reinforcement in a rail transit protection area is as follows Figures 1-12 shown, including the following steps:

[0045] S1: Geological survey to eliminate risk factors;

[0046] S2: Excavate the base layer and install anchor cables 06 of different lengths as required;

[0047] S3: Bottom treatment, lay the functional layer 01;

[0048] S4: Install the steel bar grid and install the formwork;

[0049] S5: Inject foamed concrete using a grouting device to solidify; The grouting device includes: a mounting plate 20, a limiting cylinder 24, a power mechanism, and a spray nozzle 28; A temporary storage box 21 is fixedly connected to the mounting plate 20, and a gas supply and mixing mechanism located on the mounting plate 20 is connected to one side of the temporary storage box 21; The mounting plate 20 provides overall support to facilitate the installation and fixation of the temporary storage box 21 and other devices, and the gas supply and mixing mechanism supplies gas and mixes to ensure the discharge of materials;

[0050] The limiting cylinder 24 is fixedly connected to the functional layer 01, a disturbing mechanism is connected inside the limiting cylinder 24, and the top of the disturbing mechanism is connected to a stirring mechanism connected to the limiting cylinder 24; The limiting cylinder 24 provides limiting guidance and at the same time protects the internal disturbing mechanism, and the stirring mechanism performs corresponding stirring and mixing for preliminary treatment work;

[0051] A power mechanism is provided on the functional layer 01, and the power mechanism is connected to a power ring 30; The output end of the power mechanism is connected to the gas supply and mixing mechanism; The power mechanism provides power and at the same time cooperates with the gas supply and mixing mechanism to perform necessary actions;

[0052] The spray nozzle 28 is connected to the gas supply and mixing mechanism, and the spray nozzle 28 sprays the final material for output;

[0053] S6: Remove the formwork and cure, and treat the formed surface;

[0054] S7: Spray and install the protective surface layer material.

[0055] As shown in Figure 5 、 Figure 8 、 Figure 9 shown, the gas supply and mixing mechanism includes: an air pump 22, a power pipe 33, and a discharge pipe 29; The air pump 22 is fixedly connected to the functional layer 01, the output end of the air pump 22 is connected to an air delivery pipe 36, and the other end of the air delivery pipe 36 is fixedly connected to a mixing cylinder 27 fixedly connected to the functional layer 01; The air pump 22 sucks air and then enters the mixing cylinder 27 through the air delivery pipe 36 for inflation;

[0056] The power tube 33 is rotatably connected to the mixing barrel 27. The power tube 33 is fixedly connected to the power ring 30. A plurality of paddles 35 are fixedly connected to the power tube 33. The paddles 35 are arranged in the mixing barrel 27. An overflow hole 37 located on the power tube 33 is arranged between adjacent paddles 35. The power tube 33 drives and supports the main body. When the power tube 33 rotates, the paddles 35 are driven to rotate. The overflow hole 37 allows the mud transported from the front to overflow and enter the mixing barrel 27.

[0057] The discharge pipe 29 is fixedly connected to one side of the mixing barrel 27, and the other end of the discharge pipe 29 is connected to the injection nozzle 28; the discharge pipe 29 is connected to transport the finished product;

[0058] The input end of the air pump 22 is connected to an input pipe, and one end of the input pipe is connected to a filter plate; the filter plate performs filtering, and then enters the air pump 22 through the input pipe to realize the circulation of the fluid.

[0059] It should be noted that the parts in this embodiment that are the same or similar to those in the first embodiment can be referenced to each other and will not be described in detail in this application.

[0060] Embodiment 3

[0061] As another embodiment, this embodiment three proposes, on the basis of embodiment two, a more specific construction method of grouting the foundation of the rail transit protection area to reinforce the foam concrete lightweight embankment.

[0062] like Figures 5-7 , Figures 10-11 As shown, the disturbance mechanism includes: a transmission tube 44, a transmission assembly 47 and a stopper 46; the transmission tube 44 and the limiting cylinder 24 are rotatably sleeved, the transmission tube 44 is transmission-connected with the stirring mechanism, and the bottom end of the transmission tube 44 is rotatably sleeved with a feeding tube 34 connected to the temporary storage box 21; the transmission tube 44 transmits power, and the feeding tube 34 is connected to the temporary storage box 21, so that the raw materials in the temporary storage box 21 pass through the pump body in the temporary storage box 21, and enter the mixing box 41 through the feeding tube 34 and the transmission tube 44 to achieve addition;

[0063] The transmission assembly 47 is in transmission connection with the transmission tube 44. One end of the transmission assembly 47 is in transmission connection with a transmission three 45 fixedly connected to the limiting cylinder 24. The output end of the transmission three 45 is in transmission connection with the transmission two 43. The output end of the transmission two 43 is in transmission connection with the boss 42 connected to the stirring mechanism. The transmission assembly 47 transmits power, and the torque of the transmission tube 44 is transmitted to the transmission three 45, and then to the transmission two 43, driving the rotation of the boss 42. The boss 42 causes the entire mixing box 41 to move up and down to achieve disturbance.

[0064] One end of the stopper 46 is fixedly connected to the limiting cylinder 24, and the other end of the stopper 46 is connected to the stirring mechanism. The stopper 46 provides support and limitation.

[0065] As Figures 5-7 , Figures 10-11 shown in the figure, the stirring mechanism includes: a sealing cover 23, a stabilizing sleeve 48, and a discharge pipe 32; the sealing cover 23 is slidably sleeved on the inner wall of the limiting cylinder 24; a mixing tank 41 in contact with the boss 42 is fixedly connected to the bottom of the sealing cover 23. The sealing cover 23 divides the space, and the mixing tank 41 is used for temporary storage and provides space.

[0066] The stabilizing sleeve 48 is fixedly connected to the bottom of the sealing cover 23. The stabilizing sleeve 48 is in spline drive connection with the transmission pipe 44. A mixing rod 40 is fixedly connected to the upper side of the stabilizing sleeve 48. A plurality of stirring rods 49 are fixedly connected to the outside of the mixing rod 40. The top end of the mixing rod 40 is in transmission connection with a motor one located inside the sealing cover 23. Under the action of the motor one, the mixing rod 40 is driven to rotate. Further, through the drive of the stabilizing sleeve 48, the transmission pipe 44 is driven, and the stirring rods 49 perform internal stirring.

[0067] One end of the discharge pipe 32 is connected to the bottom of the sealing cover 23, and the other end is rotatably connected to the power ring 30; the power ring 30 is connected to the power mechanism. The discharge pipe 32 discharges the finished product. Then, it is connected to the power pipe 33 through the power ring 30, so that the raw material overflows through the power pipe 33 and the overflow holes 37 for addition.

[0068] As Figures 5-9 shown in the figure, the power mechanism includes: a motor two 25 and a transmission rod 31; the motor two 25 is fixedly connected to the functional layer 01, and the output end of the motor two 25 is in transmission connection with a transmission one 26 fixedly connected to the functional layer 01; the motor two 25 outputs power, and then through the speed change of the transmission one 26, the subsequent transmission is carried out.

[0069] The transmission rod 31 is in transmission connection with the output end of the transmission one 26, and the other end of the transmission rod 31 is in transmission connection with the power ring 30; the transmission rod 31 is driven to rotate under the drive of the transmission one 26, and then drives the power ring 30 and the power pipe 33 to rotate for power output.

[0070] As Figures 10-12 shown in the figure, the stirring rod 49 includes a stabilizing pipe 54 fixedly connected to the mixing rod 40. A plurality of protruding strips 52 are fixedly connected to the outside of the stabilizing pipe 54. Spray holes 53 are provided on the stabilizing pipe 54 between two protruding strips 52; during the rotation of the mixing tank 41, the stirring rod 49 is driven to rotate, that is, the stabilizing pipe 54 and the protruding strips 52 are driven to rotate. The protruding strips 52 cooperate with the rotating stabilizing pipe 54 for mixing, and the spray holes 53 discharge the raw material to achieve the early addition.

[0071] It should be noted that the same or similar parts in this embodiment and Embodiment 2 can be referred to each other, and will not be elaborated in this application.

[0072] Embodiment 4

[0073] As another embodiment, this Embodiment 4 is proposed on the basis of Embodiment 3, and a more specific construction method of a foam concrete lightweight embankment for ground grouting reinforcement in the rail transit protection area is as Figures 1-12 shown, and includes the following steps:

[0074] Step 1: Before pouring, install the mounting plate 20 on the corresponding vehicle at the site to facilitate subsequent movement. Place the concrete raw materials in the temporary storage box 21 for addition. At the same time, cooperate with external vehicles to connect their pipelines to the sealing cover 23 to facilitate subsequent water addition and complete the preliminary preparation work.

[0075] Step 2: Before pouring, pump the raw materials into the sealing cover 23 in advance. At the same time, through the operation of the first motor, the mixing rod 40, the stabilizing sleeve 48, the transmission pipe 44, etc. rotate. The rotation of the mixing rod 40 drives the rotation of the stirring rod 49 to mix water and raw materials. The rotation of the transmission pipe 44 is transmitted through the transmission assembly 47, the third transmission 45 and the second transmission 43, so that the boss 42 rotates, and then the mixing box 41 vibrates under the push of the boss 42 to discharge the gas in the concrete, ensuring mixing and meeting the needs of subsequent work.

[0076] Step 3: After mixing is completed, the first motor continues to operate to reduce the layering of the concrete. Then, under the action of gravity, the concrete enters the mixing cylinder 27 through the discharge pipe 32, the power ring 30, the power pipe 33 and the overflow hole 37 for addition. During this process, the second motor 25 and the air pump 22 operate. After the operation of the second motor 25 drives the first transmission 26 to operate, it drives the transmission rod 31 to rotate, further driving the power ring 30 to rotate, so that the power pipe 33 and the paddle 35 rotate, using the spatial pressure difference to extrude the raw materials. At the same time, the air pump 22 sucks in external gas, and then enters the mixing cylinder 27 through the air delivery pipe 36 to mix with the concrete raw materials, and at the same time increases the pressure in the mixing cylinder 27. Finally, the mixed concrete enters the spray nozzle 28 through the discharge pipe 29 for spraying to meet the work requirements.

[0077] It should be noted that the same or similar parts in this embodiment and Embodiment 3 can be referred to each other, and will not be elaborated in this application.

[0078] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

Claims

1. A lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area, characterized in that include: Functional layer, transverse rods and anchor cables; the functional layer is connected with symmetrically arranged side walls on both sides, and the inner walls of the side walls are connected with staggered reinforcing ribs; the vertical reinforcing ribs are connected with transverse reinforcing ribs; the transverse rods are arranged on the top of the functional layer, and vertical rods are arranged between the transverse rods; one end of the anchor cable is connected to the outer wall of the side wall, and the other end of the anchor cable is connected to the wear-increasing cover.

2. A construction method for a lightweight embankment of foamed concrete for ground grouting reinforcement in a rail transit protection area as described in claim 1, characterized in that, The following steps are involved: S1: Geological survey to eliminate dangerous factors; S2: Excavation of the base layer, installation of anchor cables of different lengths as required; S3: bottom treatment, laying of functional layer; S4: Install steel mesh and formwork; S5: injecting foamed concrete into the grouting device for solidification; S6: demolding and curing, and processing the molding surface; S7: Spray and install protective surface materials.

3. The construction method of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area according to claim 2, characterized in that, In step S5, the grouting device includes: a mounting plate, a limiting cylinder, a power mechanism and an injection nozzle; a temporary storage box is fixedly connected to the mounting plate, and one side of the temporary storage box is connected to an air supply mixing mechanism located on the mounting plate; the limiting cylinder is fixedly connected to the functional layer, a disturbance mechanism is connected inside the limiting cylinder, and a stirring mechanism connected to the limiting cylinder is connected to the top of the disturbance mechanism; a power mechanism is provided on the functional layer, and the power mechanism is connected to a power ring; the output end of the power mechanism is connected to the air supply mixing mechanism; the injection nozzle is connected to the air supply mixing mechanism.

4. The construction method of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area according to claim 3, characterized in that, The air supply and mixing mechanism includes: an air pump, a power pipe and a discharge pipe; the air pump is fixedly connected to the functional layer, the output end of the air pump is connected to the air supply pipe, and the other end of the air supply pipe is fixedly connected to a mixing barrel fixedly connected to the functional layer; the power pipe and the mixing barrel are rotatably connected, the power pipe is fixedly connected to a power ring, a plurality of paddles are fixedly connected to the power pipe, the paddles are arranged in the mixing barrel, and overflow holes located on the power pipe are arranged between adjacent paddles; the discharge pipe is fixedly connected to one side of the mixing barrel, and the other end of the discharge pipe is connected to the injection nozzle.

5. The construction method of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area according to claim 3 or claim 4, characterized in that, The input end of the air pump is connected with an input pipe, and one end of the input pipe is connected with a filter plate.

6. The construction method of the foam concrete lightweight embankment for ground grouting reinforcement in the rail transit protection area according to claim 3, characterized in that The disturbance mechanism includes: a transmission tube, a transmission assembly and a limiter; the transmission tube and the limiting cylinder are rotatably sleeved, the transmission tube is transmission-connected to the stirring mechanism, and the bottom end of the transmission tube is rotatably sleeved with a feeding tube connected to the temporary storage box; the transmission assembly and the transmission tube are transmission-connected, one end of the transmission assembly is transmission-connected to a transmission three fixedly connected to the limiting cylinder, the output end of the transmission three is transmission-connected to a transmission two, and the output end of the transmission two is transmission-connected to a boss connected to the stirring mechanism; one end of the limiter is fixedly connected to the limiting cylinder, and the other end of the limiter is connected to the stirring mechanism.

7. The construction method of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area according to claim 3, characterized in that The stirring mechanism includes: a packaging cover, a stabilizing sleeve and a discharge pipe; the packaging cover and the inner wall of the limiting cylinder are slidably sleeved; the stabilizing sleeve and the bottom of the packaging cover are fixedly connected, the upper side of the stabilizing sleeve is fixedly connected with a mixing rod, the outer side of the mixing rod is fixedly connected with a plurality of stirring rods, and the top end of the mixing rod is transmission-connected with a motor located in the packaging cover; one end of the discharge pipe is connected to the bottom of the packaging cover, and the other end is rotatably connected to a power ring.

8. The construction method of the lightweight embankment of foam concrete for ground grouting reinforcement in the rail transit protection area according to claim 7, characterized in that, The stirring rod comprises a stabilizing tube fixedly connected to the mixing rod, a plurality of raised strips are fixedly connected to the outer side of the stabilizing tube, and a spray hole located between two raised strips is arranged on the stabilizing tube.

9. The construction method of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area according to claim 6 or claim 7, characterized in that, The bottom of the packaging cover is fixedly connected with a mixing box in contact with the top of the boss; the stabilizing sleeve is connected with the transmission pipe through spline transmission.

10. The construction method of the lightweight embankment of foamed concrete for ground grouting reinforcement in the rail transit protection area according to claim 3, characterized in that, The power mechanism includes: motor two and a transmission rod; motor two is fixedly connected to the functional layer, and the output end of motor two is drivingly connected to a first transmission that is fixedly connected to the functional layer; the transmission rod is drivingly connected to the output end of the first transmission, and the other end of the transmission rod is drivingly connected to the power ring.

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