CN117212570A - Steel cylinder concrete jacking pipe and connecting method and using method thereof - Google Patents

Abstract

The invention discloses a steel cylinder concrete pipe jacking and its connection method and use method. The steel cylinder concrete pipe jacking includes a steel cylinder and concrete. The concrete includes outer concrete. The steel cylinder is connected with a diameter facing the steel cylinder. The pegs in the direction are embedded in the outer concrete; the steel cylinder concrete jacking pipe is connected to the radial pegs of the steel cylinder, so that the pegs are embedded in the outer concrete, so that the steel cylinder When the cylinder concrete jacking pipe is bearing the load, the relative positions of the steel cylinder and the outer concrete remain consistent to prevent interface slippage.

Description

A steel cylinder concrete pipe jacking method and its connection method and use method

Technical field

The invention relates to the technical field of concrete pipes used in jacking construction methods, specifically a steel cylinder concrete pipe jacking method and its connection method and use method.

Background technique

At present, trenchless pipe jacking technology has been widely used in the domestic municipal field. This technology mainly uses prestressed steel cylinder concrete pipe jacking for jacking construction. The structure of this prestressed steel cylinder concrete pipe jacking includes steel cylinders and concrete. During the jacking construction process, interface slippage between the steel cylinder and the concrete is likely to occur, which will cause the construction speed to decrease or jacking to fail, delaying the construction progress and increasing the construction cost.

Contents of the invention

The technical problem to be solved by the present invention is to provide a steel cylinder concrete pipe jacking method and its connection method and use method in order to overcome the defect of interface slippage between the steel cylinder and concrete in the prior art.

The present invention solves the above technical problems through the following technical solutions:

A steel cylinder concrete jacking pipe includes a steel cylinder and concrete. The concrete includes outer concrete. The steel cylinder is connected with studs radially directed toward the steel cylinder. The studs are embedded in the outer concrete. .

By connecting the studs radially toward the steel cylinder to the steel cylinder, the studs are embedded in the concrete on the outside, so that when the steel cylinder concrete jacking pipe is bearing the load, the relative positions of the steel cylinder and the concrete on the outside remain consistent, preventing the occurrence of Interface slippage.

Preferably, the bolt includes a bolt body and a bolt connection end. The bolt connection end is connected to a steel cylinder. The bolt connection end has a columnar structure with a diameter larger than the bolt body.

By arranging a columnar structure with a diameter larger than the main body of the stud at the stud connection end where the stud is connected to the steel cylinder, the connection area between the stud and the steel cylinder can be increased, making the connection between the stud and the steel cylinder stronger.

Preferably, the peg includes a peg body and a peg free end, and the peg free end has a columnar structure with a diameter larger than that of the peg body.

By arranging a columnar structure with a diameter larger than the main body of the stud at the free end of the stud, the contact area between the stud and the concrete can be increased, making the stud more firmly embedded in the concrete.

Preferably, the pegs are evenly arranged on the steel cylinder, and the spacing between the pegs is greater than 0.1m.

By evenly arranging the pegs on the steel cylinder, it can ensure that the force transmitted through the pegs between the steel cylinder and the concrete is evenly distributed, improving the overall stability; setting the spacing between the pegs to be greater than 0.1m, both It can ensure that the studs do not affect the even pouring of concrete, and also saves materials and costs.

Preferably, the pegs are evenly arranged on the steel cylinder, and the spacing between the pegs is less than 1 m.

By setting the spacing between the pegs to less than 1m, it is ensured that the pegs have a better effect of preventing interface slippage in the steel cylinder concrete jacking pipe. An excessively wide spacing will greatly weaken the effect of the pegs.

Preferably, the two ends of the steel cylinder concrete jacking pipe are respectively provided with sockets and sockets for connecting with other steel cylinder concrete jacking pipes, and the sockets and sockets are made of steel, and the The two ends of the steel cylinder are connected to the socket and socket respectively by welding.

By setting the socket and the socket to facilitate the mutual connection between the steel cylinder concrete jacking pipes, the socket and the socket are set as steel structures, so that the socket and the socket are not easily damaged; the two ends of the steel cylinder are respectively connected with the socket and the socket The connection is achieved by welding, which makes the connection between the two ends of the steel cylinder and the socket and socket more solid, making the steel cylinder concrete jacking pipe have the advantages of good impermeability of the pipe body and high pressure resistance of the interface.

Preferably, the steel cylinder concrete jacking pipe also includes an outer steel sleeve, anchor bars and a steel mesh. The outer steel sleeve is located outside the socket. The outer steel sleeve is fixed to the socket by passing the anchor bars through the steel mesh. In the concrete, the steel mesh near one end of the socket is arranged in a stepped manner to form a stepped surface. The stepped surface includes a second stepped surface and a first stepped surface distributed along the axial direction of the steel cylinder. The second stepped surface The diameter of the surface is smaller than the diameter of the steel mesh at the center of the pipe section, and the diameter of the first stepped surface is smaller than the diameter of the second stepped surface; the outer sides of the first stepped surface are arranged sequentially from the end toward the center of the pipe section. There are steel rings and wedge seals.

By arranging the outer steel sleeve, steel ring and wedge sealing ring, the interface between the two sections of steel cylinder concrete jacking pipe can be protected from the invasion of external mud and sand during the jacking construction process, thus ensuring the steel cylinder concrete pipe jacking. The ability to correct deviations during the jacking construction process also ensures the sealing performance of the interface between two adjacent sections of steel cylinder concrete jacking pipes.

Preferably, along the insertion direction of the steel cylinder concrete jacking pipe, the socket is provided with one set or two sets of grooves spaced apart, and the grooves are arranged at a distance from the socket away from the socket and the steel cylinder. At the end of the connection, an "O" ring is embedded in the groove.

By arranging a groove in the socket and inserting an "O"-shaped sealing ring, a sealed connection can be formed between the socket of this steel cylinder concrete jacking pipe and the socket of another steel cylinder concrete jacking pipe, and the sealing ring can be Being embedded in the groove can prevent the sealing ring from being displaced during the connection of two sections of steel cylinder concrete jacking pipes.

Preferably, the steel cylinder concrete jacking pipe is provided with a grouting hole penetrating along the radial direction of the steel cylinder concrete jacking pipe, and the grouting hole is provided on the steel cylinder close to the socket.

By arranging grouting holes on the steel cylinder close to the socket along the radial direction of the steel cylinder concrete jacking pipe, grouting and sealing are facilitated after the two steel cylinder concrete jacking pipes are connected.

Preferably, the outer steel sleeve and the anchor bar are connected by welding.

Compared with other connection methods, welding makes the connection between the outer steel sleeve and the anchor bar stronger and less likely to be damaged.

A method of connecting steel cylinder concrete pipe jacking. The connection method of steel cylinder concrete pipe jacking is used to connect two steel cylinder concrete pipe jacking sections as described above. The connection method of steel cylinder concrete pipe jacking specifically includes The following steps: connect the socket of the steel cylinder concrete jacking pipe described in the first section with the socket of the steel cylinder concrete jacking pipe described in the second section, wherein the outer steel sleeve of the steel cylinder concrete jacking pipe described in the first section is connected to the socket of the steel cylinder concrete jacking pipe described in the second section. When the outer concrete of the steel cylinder concrete jacking pipe described in Section 2 forms a sealed connection through the sealing ring, a gap is formed between the outer steel sleeve and the outer concrete, and the gap serves as a connecting hole for the grouting hole. grouting nozzle.

By using the gap formed between the outer steel sleeve and the outer concrete as a grouting nozzle connecting the grouting holes, there is no need to set up an additional grouting nozzle, making the connection of the steel cylinder concrete simpler.

A method of using steel cylinder concrete pipe jacking. The method of using steel cylinder concrete pipe jacking adopts the steel cylinder concrete pipe jacking described above. During the jacking construction process, the steel cylinder concrete pipe jacking method described in the first section is used. After jacking the steel cylinder concrete pipe described in Section 2, lubricating mud is injected through the grouting hole. After the lubricating mud is injected, a hydraulic pressure test is performed; after the hydraulic pressure test is qualified, the micro-expansion cement mortar is caulked During construction, cement slurry or cement mortar is injected into the grouting hole to replace the lubricating mud for mud replacement. After completion, pipe plugging is used for sealing.

By using the above-mentioned steel cylinder concrete pipe jacking, the problem of interface slipping will not occur during the jacking construction process, ensuring the smooth progress of the construction. The sealed steel cylinder concrete pipe jacking has good anti-seepage properties. Anti-stress effect.

The positive and progressive effect of the present invention is that by connecting the studs in the radial direction of the steel cylinder to the steel cylinder, the studs are embedded in the outer concrete, so that when the steel cylinder concrete jacking pipe is bearing the load, the steel cylinder and The relative position of the outer concrete remains consistent to prevent interface slippage.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of a steel cylinder concrete pipe jacking according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a bolt according to an embodiment of the present invention;

Figure 3 is a schematic diagram of the connection between the bolt and the steel cylinder according to an embodiment of the present invention;

Figure 4 is a schematic radial cross-sectional view of the steel cylinder concrete jacking pipe body according to one embodiment of the present invention;

Figure 5 is a schematic axial cross-sectional view of the steel cylinder concrete jacking pipe body according to one embodiment of the present invention;

Figure 6 is a schematic structural diagram of the axial section of the interface between two adjacent sections of steel cylinder concrete jacking pipes according to another embodiment of the present invention.

Explanation of reference symbols:

Section 1 Steel Cylinder Concrete Pipe Jacking 100

Section 2 Steel Cylinder Concrete Pipe Jacking 200

Steel cylinder 1

Socket 2

Jack 3

Groove 31

"O" ring seal 32

peg 4

Bolt body 41

Bolt connection end 42

Bolt free end 43

Reinforced mesh 5

Outer steel sleeve 6

Anchor bar 7

steel ring 8

Outside concrete 9

Inner layer of concrete 10

wood liner 11

Wedge seal 12

Grouting hole 13

Grouting nozzle 14

Micro expansion cement mortar 15

First step surface 51

Second step surface 52

Detailed ways

The present invention is further described below by means of examples, but the present invention is not limited to the scope of the examples.

Example 1

As shown in Figure 1, this embodiment provides a steel-cylinder concrete jacking pipe. The steel-cylinder concrete jacking pipe is divided into a main part and a connecting part. The main part includes components arranged sequentially from the inside to the outside along the radial direction of the steel-cylinder concrete jacking pipe. The steel cylinder 1, the stud 4 and the outer concrete 9. The bolt connection end 42 of the bolt 4 is connected to the steel cylinder 1 , and the free end 43 of the bolt is embedded in the outer concrete 9 . By connecting the studs 4 in the radial direction of the steel cylinder 1 to the steel cylinder 1, the studs 4 are embedded in the outer concrete 9, so that when the steel cylinder concrete jacking pipe is bearing the load, the relationship between the steel cylinder 1 and the outer concrete 9 The relative positions are kept consistent to prevent interface slippage; the steel cylinder 1 can not only play a waterproof and anti-seepage role, but also fully exert its tensile strength.

In this embodiment, the stud 4 and the steel cylinder 1 are welded. Further, as shown in Figure 2, the stud connection end 42 connecting the stud 4 to the steel cylinder 1 has a columnar structure with a diameter larger than the stud body 41; the stud 4 is far away from the stud connection between the stud 4 and the steel cylinder 1. The free end 43 of the peg 42 has a cylindrical structure with a diameter larger than the body of the peg 4 . In other embodiments, the connecting end of the stud 4 and the steel cylinder 1 may also be another columnar structure with a diameter larger than the stud body 41 , such as a columnar structure with a quadrilateral or hexagonal cross-section. The free end of the stud 4 away from the connecting end has a columnar structure with a diameter larger than the main body of the stud 4; in other embodiments, the connecting end of the stud 4 and the steel cylinder 1 can also be other diameters larger than the stud body 41 Column structure, such as a columnar structure with a quadrilateral or hexagonal cross-section.

By arranging a columnar structure with a larger diameter than the main body 41 of the bolt at the bolt connection end 42, the connection area between the bolt 4 and the steel cylinder 1 can be increased, making the connection between the bolt 4 and the steel cylinder 1 stronger. The free end 43 of the bolt is provided with a columnar structure with a diameter larger than the main body 41 of the bolt, which can increase the contact area between the bolt 4 and the concrete, making the bolt 4 more firmly embedded in the concrete.

Further, as shown in Figure 3, the studs 4 are evenly arranged on the steel cylinder 1 in a rectangular arrangement, and the spacing between the studs 4 is between 0.1m and 1m. In other embodiments, the pegs 4 may also be arranged in a triangular or plum-shaped arrangement, as long as the arrangement is uniform to ensure uniform stress on different pegs.

By arranging the studs 4 evenly on the steel cylinder 1, it is possible to ensure that the force transmitted through the studs 4 between the steel cylinder 1 and the concrete is evenly distributed, thereby improving the overall stability and obtaining better protection against interface slippage. Effect: Setting the spacing between the pegs 4 to greater than 0.1m ensures that the pegs 4 do not affect the uniform pouring of concrete, so that the steel cylinder concrete jacking pipe can be poured into shape at one time, is simple to make, has a low cost, and saves money. Materials and cost; setting the spacing between the studs 4 to less than 1m ensures that the studs 4 have a better effect in preventing interface slippage in the steel cylinder concrete jacking pipe. An excessively wide spacing will cause the studs 4 to The effect is greatly reduced.

Specifically, as shown in Figure 4, the main part of the steel cylinder concrete jacking pipe also includes a steel mesh 5 located outside the studs 4 and an inner layer of concrete 10 located inside the steel cylinder 1. The steel mesh 5 is also embedded on the outside. in concrete 9; further, as shown in Figure 5, the connection part of the steel cylinder concrete jacking pipe includes a steel socket 2 and a socket 3 for connecting with other steel cylinder concrete jacking pipes. The socket 2 and The sockets 3 are respectively located at both ends of the steel cylinder concrete jacking pipe and are connected to the two ends of the steel cylinder 1 respectively.

In this embodiment, the thickness of the steel cylinder 1 is 0.5 mm to 5 mm, and the socket 2 and the socket 3 are respectively connected to the two ends of the steel cylinder 1 through welding.

By setting the socket 2 and the socket 3, it is convenient to connect the multi-section steel cylinder concrete jacking pipe; compared with the direct pouring of concrete or the socket 2 and the socket 3 made of other materials such as iron, the socket 2 and the socket 3 made of steel are used 3. It is not easy to be damaged and has better durability; the thickness of the steel cylinder 1 is greater than 0.5mm to ensure the structural strength of the steel cylinder concrete jacking pipe, and the thickness of the steel cylinder 1 is less than 5mm to avoid wasting material on the basis of ensuring the structural strength; compared to Other connection methods, welded connections are stronger, making the steel cylinder concrete jacking pipe have the advantages of good impermeability of the pipe body and high pressure resistance of the interface.

Further, an outer steel sleeve 6 is provided on the outside of the socket 2. One end of the outer steel sleeve 6 is partially fixed to the outer edge of the outer concrete 9 through the anchor bars 7 through the steel mesh. The anchor bars are embedded in the outer concrete 9. The other end of the steel sleeve 6 extends outward along the axial direction of the steel cylinder concrete jacking pipe. The structure at the socket 2 is composed of the socket 2, the outer concrete 9, the steel mesh 5 and the partial outer steel sleeve 6 fixed on the outer edge of the outer concrete 9 from the inside to the outside in the radial direction. The structure at the socket 3 is along the radial direction. From the inside to the outside, there are the inner concrete and socket 3. The steel mesh 5 close to the socket 3 is arranged in a stepped manner to form a stepped surface. The stepped surface includes a second stepped surface 52 and a first stepped surface 51 extending outward in the axial direction of the steel cylinder 1. The diameter of the second stepped surface 52 is less than The diameter of the steel mesh at the center of the pipe section, the diameter of the first stepped surface 51 is smaller than the diameter of the second stepped surface 52; a steel ring 8 and a wedge-shaped sealing ring 12 are arranged on the outside of the first stepped surface 51 from the end to the center of the pipe section. , the steel ring 8 can prevent the steel cylinder concrete jacking pipe from being damaged by collision during transportation. Further, two sets of grooves 31 are provided at the socket 3. The two sets of grooves 31 are distributed along the axial direction of the steel cylinder concrete jacking pipe. The grooves 31 are arranged at the distance between the socket 3 and the steel cylinder 1. At the end of the connection, an “O”-shaped sealing ring 32 is embedded in the groove 31 .

When the socket 2 end of one steel cylinder concrete jacking pipe is connected to the socket 3 end of another steel cylinder concrete jacking pipe, the wedge sealing ring 12 and the outer steel sleeve 6 work together to form the first sealing structure. A second sealing structure is formed between the port 2, the "O"-shaped sealing ring 32 and the socket 3, so that during the jacking construction process, the interface of the two steel cylinder concrete jacking pipes will not be invaded by external mud and sand, thereby ensuring The ability of the steel cylinder concrete jacking pipe to correct deviations during the jacking construction process also ensures the sealing performance of the interface between two adjacent steel cylinder concrete pipe jacking sections. Embedding the "O"-shaped sealing ring 32 in the groove 31 can prevent the sealing ring from being displaced during the connection of two sections of steel cylinder concrete jacking pipes. In this embodiment, two grooves 31 are provided at the socket 3 and two "O"-shaped sealing rings 32, making the second sealing structure more effective. In other embodiments, one or more grooves 31 in which the "O"-shaped sealing ring 32 is embedded can also be provided, as long as the connection between the socket 2 and the socket 3 can be sealed.

Further, the outer steel sleeve 6 and the anchor bar 7 are connected by welding.

Compared with other connection methods, welding makes the connection between the steel sleeve and the anchor bar 7 stronger and less likely to be damaged.

In this embodiment, the steel cylinder concrete jacking pipe is provided with a grouting hole 13 penetrating along the radial direction of the steel cylinder concrete jacking pipe. The grouting hole 13 is provided on the steel cylinder 1 close to the socket 3 .

By setting a grouting hole 13 on the steel cylinder 1 close to the socket 3 along the radial direction of the steel cylinder concrete jacking pipe, grouting and sealing can be performed after the two sections of the steel cylinder concrete jacking pipe are connected.

In addition, the steel cylinder concrete pipe jacking structure can open holes and anchor various iron parts, with higher reliability and durability. It has broad application prospects in comprehensive pipe corridors, power tunnels, water supply and drainage pipelines and other fields.

Example 2

This embodiment provides a connection method for steel cylinder concrete pipe jacking. As shown in Figure 6, the connection method for steel cylinder concrete pipe jacking is used to connect two sections of steel cylinder concrete pipe jacking in Example 1. The steel cylinder concrete pipe jacking The connection method of the cylinder concrete jacking pipe specifically includes the following steps: install a wooden liner 11 at the end of the socket 2 of the first section of the steel cylinder concrete pipe jacking pipe 100, and use the pushing method to push the second section of the steel cylinder concrete pipe jacking pipe 200. The socket 3 is pushed into the socket 2 of the first steel cylinder concrete jacking pipe 100, and the socket 3 of the second steel cylinder concrete jacking pipe 200 is connected to the first steel cylinder concrete jacking pipe 100 through the "O"-shaped sealing ring 32. A sealed connection is formed between the sockets 2 , in which the outer steel sleeve 6 of the first section of the steel cylinder concrete jacking pipe 100 and the local outer concrete 9 of the second section of the steel cylinder concrete jacking pipe 200 are formed by the wedge-shaped sealing ring 12 During the sealing connection, a gap is formed between the outer steel sleeve 6 and the outer concrete 9 , and this gap serves as a grouting nozzle 14 communicating with the grouting hole 13 .

By using the gap formed between the outer steel sleeve 6 and the outer concrete 9 as the grouting nozzle 14 communicating with the grouting hole 13, there is no need to provide an additional grouting nozzle 14, making the connection of the concrete of the steel cylinder 1 simpler.

Example 3

This embodiment provides a method of using steel cylinder concrete pipe jacking. The method of using steel cylinder concrete pipe jacking adopts the steel cylinder concrete pipe jacking in Embodiment 1. During the jacking construction process, the first section of steel cylinder concrete pipe is used. After the jacking pipe 100 is jacked into the second steel cylinder concrete jacking pipe 200, lubricating mud is injected through the grouting hole 13. After the lubricating mud is injected, a hydraulic pressure test is performed; after the hydraulic pressure test is qualified, the micro-expansion cement mortar 15 is caulked. During construction, cement slurry or cement mortar is injected into the grouting hole 13 to replace the lubricating mud for mud replacement. After completion, pipe plugging is used for sealing. The specific operation process of mud replacement belongs to the scope of the existing technology and will not be described in detail here.

By using the above-mentioned steel cylinder concrete pipe jacking, the problem of interface slipping will not occur during the jacking construction process, ensuring the smooth progress of the construction. The sealed steel cylinder concrete pipe jacking has good anti-seepage properties. Anti-stress effect.

Although specific embodiments of the present invention have been described above, those skilled in the art will understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (12)

1. The steel cylinder concrete jacking pipe comprises a steel cylinder and concrete, and is characterized in that the concrete comprises outer concrete, the steel cylinder is connected with a bolt which faces the radial direction of the steel cylinder, and the bolt is embedded in the outer concrete.

2. The steel cylinder concrete push pipe according to claim 1, wherein the peg comprises a peg body and a peg connecting end, the peg connecting end being connected with the steel cylinder, the peg connecting end having a columnar structure with a diameter larger than the peg body.

3. The steel cylinder concrete push pipe according to claim 1, wherein the peg comprises a peg body and a peg free end, the peg free end having a columnar structure with a diameter greater than the peg body.

4. The steel cylinder concrete push pipe according to claim 1, wherein the pegs are uniformly arranged on the steel cylinder, and the interval between the pegs is more than 0.1m.

5. The steel cylinder concrete push pipe according to claim 4, wherein the interval between the pegs is less than 1m.

6. The steel cylinder concrete push pipe according to claim 1, wherein two ends of the steel cylinder concrete push pipe are respectively provided with a socket and a spigot for being connected with other steel cylinder concrete push pipes, the socket and the spigot are of steel structures, and two ends of the steel cylinder are respectively connected with the socket and the spigot in a welding mode.

7. The steel cylinder concrete push pipe according to claim 6, wherein the steel cylinder concrete push pipe further comprises an outer steel sleeve, anchor bars and a reinforcing mesh, the outer steel sleeve is positioned outside the socket, and the outer steel sleeve is fixed in the concrete through the reinforcing mesh by the anchor bars; the steel bar meshes close to the sockets are arranged in a step shape to form a step surface, the step surface comprises a second step surface and a first step surface, the second step surface and the first step surface are distributed along the axial direction of the steel cylinder, the diameter of the second step surface is smaller than that of the steel bar meshes at the center of the pipe section, and the diameter of the first step surface is smaller than that of the second step surface; the outer side of the first step surface is provided with a steel ring and a wedge-shaped sealing ring from the end part to the center direction of the pipe section in sequence.

8. The steel cylinder concrete push pipe according to claim 6 or 7, wherein the socket is provided with one group or two groups of grooves at intervals along the plugging direction of the steel cylinder concrete push pipe, the grooves are arranged at the end part of the socket far from the joint of the socket and the steel cylinder, and an O-shaped sealing ring is embedded in the grooves.

9. The steel cylinder concrete push pipe according to claim 8, wherein a grouting hole penetrating in the radial direction of the steel cylinder concrete push pipe is formed in the steel cylinder concrete push pipe, and the grouting hole is formed in the steel cylinder close to the insertion opening.

10. The steel cylinder concrete push pipe of claim 7, wherein the outer steel sleeve and the anchor bars are connected by welding.

11. A method for connecting steel cylinder concrete jacking pipes, which is characterized in that the method for connecting steel cylinder concrete jacking pipes is used for connecting two sections of steel cylinder concrete jacking pipes according to claim 9, and specifically comprises the following steps: and connecting the bell mouth of the first section of steel cylinder concrete top pipe with the spigot of the second section of steel cylinder concrete top pipe, wherein when the outer steel sleeve of the first section of steel cylinder concrete top pipe and the outer concrete of the second section of steel cylinder concrete top pipe are in sealing connection through the sealing ring, a gap is formed between the outer steel sleeve and the outer concrete, and the gap is used as a grouting nozzle communicated with the grouting hole.

12. The method for using the steel cylinder concrete jacking pipe is characterized in that the steel cylinder concrete jacking pipe is adopted according to claim 9, in the jacking construction process, after a first section of the steel cylinder concrete jacking pipe is jacked into a second section of the steel cylinder concrete jacking pipe, lubricating slurry is injected through the grouting holes, and a hydraulic test is performed after the lubricating slurry is injected; and after the hydrostatic test is qualified, performing caulking construction of micro-expansion cement mortar, and injecting cement slurry or cement mortar into the grouting holes to replace lubricating slurry so as to perform slurry replacement, and plugging by adopting a pipe plug after the completion of the hydraulic test.