A method for layered grouting construction of inner sleeve and a trolley

Abstract

This invention divides the grout to be filled into layers along the height direction according to the number of inner sleeves installed in the current shift. The number of grout layers is consistent with the number of inner sleeves installed. After each inner sleeve is installed and fixed, a layer of grouting is performed. The grouting is divided into multiple layers along the height direction and the first direction. Each layer has a small amount of grout and a short length, which makes it easier to control. Because the amount of grout in a single layer is small and the length is short, it can effectively reduce the liquid level difference caused by poor grout fluidity, uncontrollable grout flow and other factors affecting grout flow during the grouting process, and reduce the probability of the inner sleeve tilting due to unbalanced buoyancy.

Description

Technical Field

[0001] This invention relates to the field of underground pipeline construction technology, specifically to a method for layered grouting construction of inner sleeves and a trolley. Background Technology

[0002] In the construction of municipal pipeline networks, it is inevitable to cross roads, mountains or existing structures. In order to ensure the safe and effective operation of the proposed pipeline network and the safety of existing structures, protective sleeves are generally installed in the project, and then inner sleeves are installed in the protective sleeves.

[0003] Currently, inner sleeves are mostly fixed by grouting. Traditionally, when fixing inner sleeves by grouting, full-height grouting is often used, where concrete grout completely encases the inner sleeve. However, full-height grouting requires a large amount of grout, and due to the shrinkage of the grout during solidification, secondary grouting is required. It is also inconvenient for pipeline maintenance. Therefore, half-height grouting is now being promoted. Half-height grouting only requires filling the inner sleeve with grout to half its height, and with the help of fixing devices, the inner sleeve is fixed. This can reduce the amount of grout used by half, which can significantly reduce the project cost. At the same time, since half-height grouting exposes the upper part of the inner sleeve, it is more convenient for later maintenance.

[0004] Currently, when fixing inner sleeves with half-height grouting, the general practice is to install a certain length of inner sleeve first, then grout from the outside of the inner sleeve, wait for the grout to solidify, and then install the next inner sleeve, repeating this process. Each time, the area requiring grouting has a large span in the axial direction of the inner sleeve. To increase grouting efficiency, grout needs to be injected from the middle of the entire grouting area to allow the grout to flow to both ends. This requires multiple high-power grouting pumps working in conjunction with grouting pipes to deliver the grout. When the grouting pipes are long, different grouting pipes will have different bending shapes, resulting in varying resistance to the grout within the pipes. Furthermore, because the grout delivery speeds of different grouting pumps cannot be completely consistent, this ultimately leads to differences in grouting speeds on the left and right sides of the inner sleeve. Additionally, due to the flow of the grout... The grouting process suffers from poor stability, making it impossible to control the flow of the grout manually. Furthermore, the presence of pads at the bottom of the inner sleeve allows the grout on both sides to communicate only through the gaps between the pads. The overall axial length of the grouting area is excessively long, and too many parameters affect the grout flow during grouting. This leads to height differences in the grout on both sides of the inner sleeve and in the axial direction. These height differences exert varying buoyancy and lateral pressure on the inner sleeve. The axial liquid level difference causes different buoyancy forces at both ends of the inner sleeve, resulting in extremely complex pressure on the inner sleeve surface during grouting. This can cause the inner sleeve to tilt, float, or shift laterally, leading to axial displacement, angles between adjacent inner sleeve sockets, and extrusion of the sealing ring, severely impacting construction progress.

[0005] Based on this, the present invention designs a layered grouting construction method and trolley for inner sleeves to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for layered grouting construction of an inner sleeve, comprising:

[0007] Step 1: Predict the number of inner sleeves to be installed in the current shift and divide the grout to be filled into layers in the vertical direction, with the number of layers being the same as the number of inner sleeves to be installed.

[0008] Step 2: The inner sleeve is transported to the installation position and fixed inside the protective sleeve at the installation position using the installation components;

[0009] Step 3: Install a sealing plate on the outer surface of the inner sleeve near the socket of the inner sleeve. The sealing plate is used to seal the gap between the outer wall of the inner sleeve and the inner wall of the protective sleeve. Next, start grouting into the gap between the inner sleeve and the protective sleeve so that the grout on the side of the inner sleeve reaches the first layer height of the stratified grouting.

[0010] Step 4: The new inner sleeve is installed into the protective sleeve through Step 2 and connected to the socket of the previous inner sleeve. After installing the sealing plate at the socket of the new inner sleeve, the sealing plate at the socket of the previous inner sleeve is removed. At the same time, grout is injected into the outside of the new inner sleeve to increase the overall grout height by one layer.

[0011] Step 5: Repeat step 4 until all inner sleeves are installed and the grout on their sides reaches the preset height.

[0012] As a further aspect of the present invention, in step one, the layers are layered at equal heights.

[0013] As a further aspect of the present invention, the inner sleeve has grouting holes that penetrate its inner and outer walls, so that grout can be conveyed from inside the inner sleeve to the outside.

[0014] As a further aspect of the present invention, in step four, when grouting the outside of the new inner sleeve section, the grout on the outside of the new inner sleeve section is made level with the grout on the outside of the previous inner sleeve section and then stopped. Next, the grouting position is changed, and grouting starts from the side of the previous inner sleeve section, so that the grout accumulates on the side of the previous inner sleeve section, filling the gap caused by the solidification and shrinkage of the previous layer of grout.

[0015] As a further aspect of the present invention, in step two, after the inner sleeve is fixed, a liquid level measuring sticker is fixedly installed on the outer wall of the inner sleeve and the inner wall of the protective sleeve. The installation height of the liquid level measuring sticker is the same as the final liquid level height, and the surface of the liquid level measuring sticker is made of reflective material.

[0016] As a further embodiment of the present invention, the sealing plate includes a template 21 and a support member installed on the first side of the template 21. The shape of the template 21 matches the shape of the gap between the inner sleeve and the protective sleeve. The support member includes a support foot for obliquely supporting the template and a support rib that is close to the template.

[0017] As a further embodiment of the present invention, the template is composed of a first part and a second part of the same shape to facilitate disassembly of the template.

[0018] A construction trolley for layered grouting of inner sleeves, applied to the aforementioned layered grouting construction method for inner sleeves, is used for transporting, adjusting, and outputting grout within a protective sleeve. The trolley includes a vehicle body, an adjustment mechanism mounted on the vehicle body, and a grouting system mounted on the vehicle body. The vehicle body is used to place and move the inner sleeve within the protective sleeve. The adjustment mechanism is used to adjust the inner sleeve mounted on the vehicle body during connection. The grouting system is used to deliver grout between the inner sleeve and the protective sleeve after the inner sleeve has been transported.

[0019] As a further embodiment of the present invention, the grouting system includes a stirring device, a grouting pump, and a grouting pipe. The stirring device is connected to the input end of the grouting pump through a pipeline for conveying grout to the grouting pump. The grouting pipe is fixed to the output end of the grouting pump and is used to connect the grouting pump with the grouting port opened in the inner sleeve.

[0020] As a further embodiment of the present invention, the adjustment mechanism shown includes a retractable crossbar and retractable vertical bars fixedly disposed at both ends of the crossbar, one of which is fixed to the vehicle body.

[0021] The present invention has the following beneficial effects:

[0022] This method divides the area to be grouted into multiple layers along both the first and height directions, shortening the distance of each grouting operation in both directions and reducing the amount of grout used per grouting session. This effectively reduces the grout level difference between the inner sleeve and its left and right sides along the first direction, decreases the pressure difference experienced by different parts of the inner sleeve during grouting, shortens the time the inner sleeve is subjected to unbalanced pressure, and prevents the inner sleeve from tilting, floating, or shifting laterally. This effectively ensures the installation quality of the inner sleeve and makes full use of the installation time, allowing the grout to better fill the gaps between the pads below the inner sleeve. This eliminates the need for secondary grouting due to a drop in liquid level. Furthermore, after installing the new inner sleeve and removing the sealing plate used to block the grout, the grout, due to its height, possesses gravitational potential energy, allowing it to fill the side of the new inner sleeve more quickly. This further accelerates the filling speed and shortens the time required for the grout to reach the same height on the side of the inner sleeve. Consequently, it further reduces the time the inner sleeve is subjected to unbalanced buoyancy, effectively improving grouting quality and preventing quality problems such as axial misalignment of the inner sleeve, angles between adjacent sleeve sockets, and extrusion of the sealing ring.

[0023] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is a flowchart of the construction method for layered grouting of the inner casing.

[0026] Figure 2 This is a schematic diagram of the inner sleeve fixing structure.

[0027] Figure 3 This is a schematic diagram of the structure of the trolley in this invention.

[0028] Figure 4 This is a schematic diagram of the sealing plate in this invention.

[0029] Figure 5 This is a schematic diagram of the inner sleeve connection in this invention.

[0030] Figure 6 This is a schematic diagram of the grouting of the inner sleeve in this invention.

[0031] Legend:

[0032] 11. Clamping hoop; 12. Adjustable support; 21. Template; 22. Support leg; 23. Support rib; 3. Vehicle body; 41. Mixing device; 42. Grouting pump; 43. Grouting pipe; 51. Horizontal bar; 52. Vertical bar. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0034] Please see Figure 1-6 This invention provides a method for layered grouting construction of inner sleeves, the construction method including:

[0035] Step 1: Predict the number of inner sleeves to be installed in the current shift. Divide the grout to be filled into layers vertically, with the number of layers being the same as the number of inner sleeves to be installed, and each layer having the same height. In the actual grouting process, there will be errors in the grout height. Therefore, the grouting height of each layer is only a reference value and needs to be adjusted in real time according to the actual situation to ensure that the height of the final grout filling layer is within the allowable error.

[0036] Step 2: The inner sleeve is transported to the installation position and fixed inside the protective sleeve at the installation position using the installation components;

[0037] Step 3: Install a sealing plate on the outer surface of the inner sleeve near the socket of the inner sleeve. The sealing plate is used to seal the gap between the outer wall of the inner sleeve and the inner wall of the protective sleeve. Next, start grouting into the gap between the inner sleeve and the protective sleeve so that the grout on the side of the inner sleeve reaches the first layer height.

[0038] Step 4: The new inner sleeve is installed into the protective sleeve through Step 2 and connected to the socket of the previous inner sleeve. After installing the sealing plate at the socket of the new inner sleeve, the sealing plate at the socket of the previous inner sleeve is removed. At the same time, grout is injected into the outside of the new inner sleeve to increase the overall grout height by one layer.

[0039] Step 5: Repeat step 4 until all inner sleeves are installed and the grout on their sides reaches the preset height.

[0040] Based on the number of inner sleeves installed in the current shift, the grout to be filled is divided into layers in the height direction. The number of grout layers is consistent with the number of inner sleeves installed. After each inner sleeve is installed and fixed, a layer of grouting is performed. The grouting is divided into multiple layers in the height direction and the first direction. Each layer is filled with a small amount of grout and is short in length, which makes it easier to control. Because the amount of grout in a single layer is small and the length is short, it can effectively reduce the liquid level difference caused by poor grout fluidity, uncontrollable grout flow and other factors affecting grout flow during the grouting process, and reduce the probability of the inner sleeve tilting due to the unbalanced buoyancy.

[0041] Specifically, the first direction is the axial direction of the protective sleeve.

[0042] Figure 2 An example of an installation assembly is shown, which includes a clamp 11 and an adjustable support 12 fixedly mounted on the top of the protective sleeve. The adjustable support 12 consists of a fixed part fixed to the inner wall of the protective sleeve and a movable part threaded onto the fixed part. The adjustable support 12 is installed on the top of the inner wall of the protective sleeve. By rotating the movable part, the distance between the movable part and the fixed part is increased, so that the movable part abuts against the top of the inner sleeve, thereby fixing the inner sleeve. The clamp 11 is located on the outside of the inner sleeve, and its two ends are fixed to the inner wall of the protective sleeve to fix the inner sleeve inside the protective sleeve.

[0043] When installing the inner sleeve, the time for transporting and installing the inner sleeve can be fully utilized. After each layer of grouting is completed, it is necessary to wait for the subsequent inner sleeve to be installed. During this waiting period, the grout can be completely filled into the gap between the pads below the inner sleeve. The bottom of each section of the inner sleeve can be completely filled, ensuring the quality of the grout filling. This also allows the grout on the left and right sides of the inner sleeve to connect and form a whole, so that the grout reaches a balanced state on both sides of the inner sleeve. This eliminates the need for subsequent secondary grouting steps. During the grouting process after the subsequent inner sleeve is installed, the grout of the previous layer can be replenished.

[0044] Because the grout will self-level on the outside of the already installed inner sleeve, when installing a new inner sleeve section, the grout already has a certain height. Therefore, under the action of gravity, the grout can fill the outside of the new inner sleeve section more quickly. Simultaneously, new grout is added to both sides of the new inner sleeve section. In the first direction, the grout on the side of the new inner sleeve section can quickly reach the same height as the grout on the side of the already installed inner sleeve, shortening the grout flow time, reducing the time of buoyancy imbalance in the inner sleeve, and decreasing the risk of inner sleeve displacement. The probability of movement is reduced, and since the liquid levels on both sides of the previously installed inner sleeve are equal, when the new inner sleeve is installed and the sealing plate of the previous inner sleeve is removed, the grout on both sides of the previous inner sleeve can only flow in one direction and the pressure is the same. Therefore, the grout on both sides of the previous inner sleeve will flow to both sides of the new inner sleeve at a similar speed, making the liquid level difference between the two sides of the new inner sleeve smaller during the grouting process, and preventing the new inner sleeve from generating a large buoyancy and lateral pressure imbalance in the left and right directions.

[0045] By dividing the area requiring grouting into multiple layers along both the first and height directions, the distance of each grouting operation in both directions is shortened, reducing the amount of grout used per grouting operation. Because each grouting area is shorter and the grouting height is lower in the first direction, the liquid level difference of the grout in the first direction and on both sides of the inner sleeve can be effectively reduced, preventing large liquid level differences in the first direction and on both sides. This reduces the pressure difference experienced by different parts of the inner sleeve during grouting, and allows the grout to fill more quickly, shortening the time the inner sleeve is subjected to unbalanced pressure and preventing tilting, floating, and lateral movement of the inner sleeve. This effectively ensures the installation quality of the inner sleeve. During the grouting process, since the installation of each section of the inner sleeve requires a certain amount of time, traditional grouting methods reduce the time interval during inner sleeve installation. This method avoids waste, as the outer side of the already installed inner sleeve already has a certain amount of grout, allowing the grout to better fill the gaps between the pads below the inner sleeve. This eliminates the need for secondary grouting due to a drop in grout level. Furthermore, after installing a new inner sleeve section and removing the sealing plate used to block the grout, the grout, due to its height, possesses gravitational potential energy, allowing it to fill the side of the new inner sleeve section more quickly. This further accelerates the filling speed and shortens the time required for the grout to fill to the same height on the side of the inner sleeve. This further reduces the time the inner sleeve is subjected to unbalanced buoyancy, effectively improving grouting quality and preventing quality problems such as inner sleeve axis misalignment, angle formation between adjacent sleeve sockets, and extrusion of the sealing ring.

[0046] Specifically, the inner sleeve has grouting holes that penetrate its inner and outer walls. During grouting, grout can be injected from inside the inner sleeve to the outside of the inner sleeve, making the grouting position adjustable.

[0047] Specifically, after the new inner sleeve section is fixed and the sealing plate of the previous inner sleeve section is removed, grouting begins from above the new inner sleeve section. This accelerates the process of the grout on the side of the new inner sleeve section reaching the same height as the grout on the side of the previous inner sleeve section. At the same time, the more fluid new grout can fill to the bottom of the inner sleeve section, resulting in a denser filling. After the grout on the side of the new inner sleeve section reaches the same height as the grout on the side of the previous inner sleeve section, the grouting position is changed, and grouting begins from above the previous inner sleeve section. This is because the grout on the previous inner sleeve section will solidify in advance. Injecting grout from the side of the previous inner sleeve section can reduce the occurrence of cold joints between the old and new grout in the previous section.

[0048] Figure 4An example of a sealing plate is shown. In this example, the sealing plate includes a template 21 and a support member. The shape of the template 21 is the same as the shape of the gap between the inner sleeve and the protective sleeve. It is used to seal the gap between the inner sleeve and the protective sleeve after the inner sleeve is fixedly installed, preventing grout leakage during grouting. The support member is installed on the first side of the template 21, which is the side of the template 21 facing away from the grouting area. The support member includes support feet 22 and support ribs 23. One end of the support foot 22 abuts against the first side of the template 21, and the other end abuts against the inner wall of the protective sleeve to support the template 21. Several support feet 22 are installed on the first side of the template 21. The support ribs 23 are fixedly installed on the first side of the template 21 to improve the overall bending resistance of the template 21 and ensure the safe use of the template 21.

[0049] Specifically, template 21 consists of a detachable first part and a second part. The first part and the second part have the same shape, dividing the gap between the inner sleeve and the protective sleeve into left and right parts from the middle, which facilitates the subsequent removal of template 21.

[0050] Specifically, after the inner sleeve is fixed, liquid level measuring stickers are fixedly installed on the outer wall of the inner sleeve and the inner wall of the protective sleeve. The installation height of the liquid level measuring stickers is the same as the final liquid level height, and the surface of the liquid level measuring stickers is made of reflective material. When the last layer of slurry is filled, the liquid level measuring stickers can be used to determine whether the slurry has reached the preset height.

[0051] A construction trolley for layered grouting of inner sleeves is applied to the aforementioned layered grouting construction method for inner sleeves. It is used to transport inner sleeves, adjust inner sleeves, and output grout within a protective sleeve. The trolley includes a car body 3, an adjustment mechanism located on the car body 3, and a grouting system located on the car body 3. The car body 3 is used to place and move the inner sleeve within the protective sleeve. The adjustment mechanism is used to adjust the inner sleeve located on the car body 3 when the inner sleeves are connected. The grouting system is used to deliver grout between the inner sleeve and the protective sleeve after the inner sleeve is transported.

[0052] Specifically, such as Figure 3As shown, the grouting system includes a mixing device 41, a grouting pump 42, and a grouting pipe 43. The mixing device 41 is connected to the input end of the grouting pump 42 via a pipeline to deliver grout to the grouting pump 42. The grouting pipe 43 is fixed to the output end of the grouting pump 42 and is used to connect the grouting pump 42 with the grouting port opened on the inner sleeve. During grouting, the grouting ports on the left and right sides of the inner sleeve are connected through two grouting pipes 43 respectively, and grout is injected into the left and right sides of the inner sleeve at the same time to prevent the formation of a liquid level difference between the left and right sides of the inner sleeve and to prevent the formation of different lateral pressures on the two sides of the inner sleeve. Short-distance grouting is achieved through the grouting system on the trolley to reduce the length of the grout moving in the grouting pipe 43, reduce the influence of the length of the grouting pipe 43 on the grouting speed on the left and right sides of the inner sleeve, reduce the difference in grouting speed on the left and right sides of the inner sleeve during grouting, and reduce the liquid level difference formed on the left and right sides of the inner sleeve during grouting.

[0053] Specifically, such as Figure 5-6 As shown, the adjustment mechanism includes a telescopic crossbar 51 and telescopic vertical bars 52 fixed at both ends of the crossbar 51. One of the two vertical bars 52 is fixed to the vehicle body 3. After the inner sleeve is transported to the position by the vehicle body 3, the crossbar 51 unfolds and moves the vertical bar 52, which is not connected to the vehicle body 3, laterally through the inner cavity of the inner sleeve to be installed to the inner cavity of the upper section of the inner sleeve. The vertical bar 52 unfolds and abuts against the inner cavity of the upper section of the inner sleeve. At this time, the crossbar 51 passes through the inner sleeve to be installed. Then, the two vertical bars 52 unfold simultaneously, causing the crossbar 51 to rise. The crossbar 51 lifts the inner sleeve from the inner cavity of the inner sleeve to be installed, thereby achieving height adjustment of the inner sleeve. Next, the vehicle body 3 approaches the already installed sleeve, and at the same time, the crossbar 51 begins to retract at the same speed, so that the inner sleeve on the crossbar 51 approaches the upper section of the inner sleeve and finally completes the docking.

[0054] By installing the adjustment mechanism and grouting system on the vehicle body 3, the transportation, installation and grouting of the inner sleeve are integrated. After the inner sleeve is transported to the designated position inside the protective sleeve through the vehicle body 3, the inner sleeve can be connected through the adjustment mechanism and grout can be injected into both sides of the inner sleeve through the grouting system, saving construction time and speeding up the construction progress.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for layered grouting construction of an inner sleeve, characterized in that, include: Step 1: Predict the number of inner sleeves to be installed in the current shift, and divide the grout to be filled into layers in the vertical direction, with the number of layers being the same as the number of inner sleeves to be installed. Step 2: The inner sleeve is transported to the installation position and fixed inside the protective sleeve at the installation position using the installation components; Step 3: Install a sealing plate on the outer surface of the inner sleeve near the socket of the inner sleeve. The sealing plate is used to seal the gap between the outer wall of the inner sleeve and the inner wall of the protective sleeve. Next, start grouting into the gap between the inner sleeve and the protective sleeve so that the grout on the side of the inner sleeve reaches the first layer height of the stratified grouting. Step 4: The new inner sleeve is installed into the protective sleeve through Step 2 and connected to the socket of the previous inner sleeve. After installing the sealing plate at the socket of the new inner sleeve, the sealing plate at the socket of the previous inner sleeve is removed. At the same time, grout is injected into the outside of the new inner sleeve to increase the overall grout height by one layer. Step 5: Repeat step 4 until all inner sleeves are installed and the grout on their sides reaches the preset height.

2. The method for layered grouting construction of an inner sleeve according to claim 1, characterized in that: In step one, the layers are of equal height.

3. The method for layered grouting construction of an inner sleeve according to claim 1, characterized in that: The inner sleeve has grouting holes that penetrate its inner and outer walls, allowing grout to be delivered from inside the inner sleeve to the outside.

4. The method for layered grouting construction of an inner sleeve according to claim 1, characterized in that: In step four, when grouting the outside of the new inner casing section, stop after the grout on the outside of the new inner casing section is level with the grout on the outside of the previous inner casing section. Then change the grouting position and start grouting from the side of the previous inner casing section.

5. The method for layered grouting construction of an inner sleeve according to claim 1, characterized in that: In step two, after the inner sleeve is fixed, a liquid level measuring sticker is fixedly installed on the outer wall of the inner sleeve and the inner wall of the protective sleeve. The installation height of the liquid level measuring sticker is the same as the final liquid level height, and the surface of the liquid level measuring sticker is made of reflective material.

6. The method for layered grouting construction of an inner sleeve according to claim 1, characterized in that: The sealing plate includes a template (21) and a support installed on the first side of the template (21), the shape of which matches the shape of the gap between the inner sleeve and the protective sleeve; The support includes a support foot (22) for obliquely supporting the template (21) and a support rib (23) that is close to the template (21).

7. The method for layered grouting construction of an inner sleeve according to claim 6, characterized in that: The template (21) consists of a first part and a second part of the same shape to facilitate the disassembly of the template (21).

8. A trolley for layered grouting of inner casing, applied to the layered grouting construction method of inner casing as described in any one of claims 1-7, used for transporting the inner casing, adjusting the inner casing, and outputting grout within the protective sleeve, characterized in that: Includes the vehicle body (3), the adjustment mechanism located on the vehicle body (3), and the grouting system located on the vehicle body (3). The vehicle body (3) is used to place the inner sleeve and move the inner sleeve within the protective sleeve; The adjustment mechanism is used to adjust the inner sleeve located on the vehicle body (3) when the inner sleeve is docked; The grouting system is used to deliver grout between the inner sleeve and the protective sleeve after the inner sleeve has been delivered.

9. The inner sleeve layered grouting construction trolley according to claim 8, characterized in that: The grouting system includes a mixing device (41), a grouting pump (42), and a grouting pipe (43). The mixing device (41) is connected to the input end of the grouting pump (42) through a pipeline to deliver grout to the grouting pump (42). The grouting pipe (43) is fixed to the output end of the grouting pump (42) and is used to connect the grouting pump (42) with the grouting port opened in the inner sleeve.

10. The inner sleeve layered grouting construction trolley according to claim 8, characterized in that: The adjustment mechanism shown includes a telescopic crossbar (51) and telescopic vertical bars (52) fixed at both ends of the crossbar (51), one of which is fixed to the vehicle body (3).

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