CN116065757B - Assembled heat-insulating composite wallboard for near-zero-carbon building and construction method thereof - Google Patents

Abstract

The invention discloses an assembled heat-insulating composite wallboard for a near-zero-carbon building, which relates to the technical field of building structural members and comprises the following components: an inner page plate; the heat preservation wallboard is arranged on one side of the inner page plate, and a pouring gap is reserved between the heat preservation wallboard and the inner page plate; the inner I-steel is vertically connected to the four corners of the inner leaf plate, and one end of the inner I-steel, which is far away from the inner leaf plate, is fixed with the heat-insulating wallboard; an airtight layer disposed on the other side of the inner page; the dovetail mortises are formed in the side edges of the heat-insulating wallboards, and tenon strip structures are correspondingly arranged on the side edges of the other sides of the heat-insulating wallboards; the grouting reinforcement layer is arranged in the pouring gap, a plurality of reinforcement connection assemblies are arranged in the grouting reinforcement layer, and the reinforcement connection assemblies are vertically connected between the heat-insulating wallboard and the inner page board; and the plugging hole sites are arranged at the bottom of the grouting reinforcement layer and are correspondingly arranged with plugging reinforcing steel bars on the ground, so that the assembly and construction firmness is improved.

Description

Assembled heat-insulating composite wallboard for near-zero-carbon building and construction method thereof

Technical Field

The invention belongs to the technical field of building structural members, and particularly relates to an assembled heat-insulating composite wallboard for a near-zero-carbon building and a construction method thereof.

Background

At present, along with the sustainable development of green buildings, the composite concrete wallboard is widely applied to various buildings in China, the traditional buildings can be directly spliced with the wall, then the heat insulation board is fixed on the outer side of the wall to be used as the outer wall for heat insulation, but the composite concrete wallboard is easy to collide with in the transportation process, meanwhile, the composite concrete wallboard needs to be cast and built later in time in the subsequent assembly process so as to realize the installation and fixation of the wall, and if the assembling position of the base surface is not even, the integral firmness of the wall is low.

Therefore, a person skilled in the art provides an assembled heat-insulating composite wallboard for a near-zero-carbon building and a construction method thereof, so as to solve the problems in the prior art.

Disclosure of Invention

In order to achieve the above purpose, the present invention provides the following technical solutions: a fabricated thermal insulation composite wallboard for near zero carbon construction, comprising:

an inner page plate;

the heat preservation wallboard is arranged on one side of the inner page plate, and a pouring gap is reserved between the heat preservation wallboard and the inner page plate;

the inner I-steel is vertically connected to the four corners of the inner leaf plate, and one end of the inner I-steel, which is far away from the inner leaf plate, is fixed with the heat-insulating wallboard;

an airtight layer disposed on the other side of the inner page;

the dovetail mortises are formed in the side edges of the heat-insulating wallboards, and tenon strip structures are correspondingly arranged on the side edges of the other sides of the heat-insulating wallboards;

the grouting reinforcement layer is arranged in the pouring gap, a plurality of reinforcement connection assemblies are arranged in the grouting reinforcement layer in an arrayed mode, and the reinforcement connection assemblies are vertically connected between the heat-insulation wallboard and the inner page board; and

the plugging hole site is arranged at the bottom of the grouting reinforcement layer and is arranged corresponding to the plugging steel bars on the ground.

Further, preferably, the heat-insulating wall panel includes:

an outer page plate;

the facing layer is arranged on one side, far away from the inner page plate, of the outer page plate;

the vacuum insulation panel is arranged on one side of the outer page plate, which is far away from the finish layer; and

and the polyurethane plate is arranged on the vacuum heat insulation plate.

Further, preferably, the reinforcing connection assembly includes:

the needle-shaped connecting piece is arranged into a U-shaped structure and is vertically fixed on the heat-insulating wallboard;

the two vibrating slurry supply structures are correspondingly arranged, and each vibrating slurry supply structure is connected to the needle-shaped connecting piece in a sliding manner; and

the mounting head is embedded and arranged on the inner page plate and is connected with the needle-shaped connecting piece.

Further, preferably, the slurry supply structure includes:

the sliding sleeve is sleeved on the needle-shaped connecting piece in a sliding manner;

the outer body piece is sleeved and fixed on the sliding sleeve;

the guide sleeve is coaxially fixed in the outer body part and is in sliding connection with the needle-shaped connecting piece;

the shaft disc is rotatably arranged at the end part of the needle-shaped connecting piece and is fixed with the mounting head, a threaded pipe is fixed at one side of the shaft disc, which is far away from the mounting head, and the threaded pipe is in sliding connection with the guide sleeve through a threaded meshing effect;

the sealing cover cylinder is sleeved outside the outer body part in a sealing sliding manner; and

and a plurality of inner springs which are distributed circumferentially, wherein each inner spring is connected between the sealing cover cylinder and the outer body member.

Further, preferably, the two vibrating slurry supply structures on the same needle-shaped connecting piece are arranged in a staggered manner.

Further, preferably, the slurry supply structure further includes:

the cement cavity is arranged in the outer body part, and a plurality of outer spray heads are circumferentially distributed on the cement cavity;

the bypass hole is formed in the side wall of the sealed cover cylinder and is arranged corresponding to the outer spray head;

the ball shaft body is arranged in the outer spray head, an inner channel is arranged in the outer spray head, the end part of the inner channel can be plugged by the ball shaft body, the ball shaft body is symmetrically and obliquely connected with an inner spring, and one end of the inner spring is connected with the outer spray head; and

the inner flow holes are arranged on the needle-shaped connecting piece, the end lever arms on the needle-shaped connecting piece are of hollow structures, a plurality of groups of inner flow holes are arranged on the needle-shaped connecting piece, the separation plates are slidably arranged in the inner flow holes, and the outer body piece is further provided with a plurality of elastic ejector pin bodies, so that the separation plates are slidably ejected when the outer body piece slides to the corresponding inner flow holes.

Further, preferably, the pouring gap is used for pouring the first cement concrete in situ, and the cement cavity can be used for pouring the second cement concrete correspondingly after the first cement concrete is poured.

Further, preferably, a plurality of the needle-like connectors are linearly distributed or circumferentially distributed.

Further, as an preference, a construction method for the near zero carbon building assembled heat insulation composite wallboard comprises the following steps:

s1, constructing a composite wallboard; the heat preservation wallboard is preferably constructed, wherein the heat preservation wallboard is sequentially provided with a facing layer, an outer page plate with the thickness of 50cm, a vacuum heat insulation plate with the thickness of 30cm and a polyurethane plate with the thickness of 70cm from outside to inside, a casting gap is reserved for on-site concrete casting to form a grouting reinforcement layer with the thickness of 150cm, I-steel is used for connecting the heat preservation wallboard and the inner page plate with the thickness of 50cm, and an airtight layer can be arranged outside the inner page plate, so that the overall thickness is not more than 0.4m, and the heat transfer coefficient is not more than 0.15W/(.K);

s2, aligning and mounting; correspondingly installing the reserved plug hole positions and the plug steel bars on the ground, wherein the adjacent composite wallboards can be in sealing connection with the tenon strip structures through dovetail mortises, and a plurality of needle-shaped connecting pieces are horizontally connected between the heat-insulating wallboards and the inner page boards;

s3, adjusting a framework; the staff adjusts the left-right distribution of each vibration slurry supply structure through screwing the mounting head, so that the vibration slurry supply structures are distributed in the pouring gap in a staggered manner;

s4, concrete pouring; filling the pouring gap with first cement concrete, wherein a worker can adopt an external tap to tap the outer wall of the wallboard, the sealing cover cylinder can axially slide relatively, and the first cement concrete is fully filled in the sliding process, so that a feeding space with the thickness of 20cm-40cm is reserved;

s5, grouting again; the second cement concrete is injected by the cement pump through the mounting head and is smaller than the space capacity of the feeding, and at the moment, the second cement concrete is correspondingly distributed at the needle-shaped connecting piece and is simultaneously matched with an external tap to perform tap compaction;

s6, subsequent filling; filling the first cement concrete again in the feeding space;

s7, cleaning the hole cover, completely pumping out the second cement concrete remained in the needle-shaped connecting piece, and performing cover sealing treatment on the mounting head.

Compared with the prior art, the invention has the beneficial effects that:

the invention adopts the vacuum board heat insulation material, the inner blade board and the outer blade board to perform preliminary presetting of the matched heat insulation composite wallboard, and then the on-site pouring can be directly performed in the construction, thereby improving the assembly and construction firmness, meanwhile, the wallboard adopts the prefabricated combined heat insulation structure integration, the whole thickness is not more than 0.4m, the heat transfer coefficient is not more than 0.15W/(.K), and the wallboard has higher heat insulation performance.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of a thermal insulation wall panel according to the present invention;

FIG. 3 is a schematic view of the structure of the fastening assembly of the present invention;

FIG. 4 is a schematic diagram of a slurry supply structure according to the present invention;

FIG. 5 is a schematic view of the structure of the cement silo according to the invention;

FIG. 6 is a schematic view of a needle connector according to the present invention;

in the figure: 1. an inner page plate; 11. inner I-steel; 12. an airtight layer; 13. dovetail mortises; 14. a tenon strip structure; 2. a heat preservation wallboard; 21. an outer page plate; 22. a facing layer; 23. vacuum insulation panels; 24. a polyurethane board; 3. grouting a reinforcing layer; 31. a plugging hole site; 4. reinforcing the connection assembly; 41. a needle-like connector; 42. a mounting head; 5. a slurry supply structure; 51. a sliding sleeve; 52. an outer torso member; 53. guide sleeve; 54. a shaft disc; 55. a threaded tube; 56. sealing the cover cylinder; 57. an inner spring; 6. a cement chamber; 61. an outer spray head; 62. a ball shaft body; 63. a bypass hole; 64. an inner flow aperture; 65. a partition plate.

Detailed Description

Referring to fig. 1 to 6, in an embodiment of the present invention, an assembled thermal insulation composite wallboard for a near zero carbon building includes:

an inner page plate 1;

the heat preservation wallboard 2 is arranged on one side of the inner page board 1, and a pouring gap is reserved between the heat preservation wallboard and the inner page board 1;

the inner I-steel 11 is vertically connected to the four corners of the inner leaf plate 1, and one end of the inner I-steel 11, which is far away from the inner leaf plate 1, is fixed with the heat-insulating wallboard 2;

an airtight layer 12 provided on the other side of the inner page 1;

dovetail mortises 13 are formed in the side edges of the heat-insulating wall boards 2, and tenon bar structures 14 are correspondingly arranged on the side edges of the other sides of the heat-insulating wall boards 2; the seamless connection installation of the heat-insulating wallboard can be realized through the mutual connection and matching of the dovetail mortises and the tenon strip structures;

the grouting reinforcement layer 3 is arranged in the pouring gap, a plurality of reinforcement connection assemblies 4 are arranged in the grouting reinforcement layer 3 in an aligned manner, and the reinforcement connection assemblies 4 are vertically connected between the heat insulation wallboard 2 and the inner page board 1; and

the plugging hole site 31 is arranged at the bottom of the grouting reinforcement layer 3 and is arranged corresponding to the plugging reinforcing steel bars on the ground, so that the grouting reinforcement layer is convenient to fix with the floor.

In this embodiment, the thermal insulation wallboard 2 includes:

an outer page plate 21;

a facing layer 22 disposed on the outer sheet 21 on a side thereof remote from the inner sheet 1;

a vacuum insulation panel 23 disposed on a side of the outer sheet 21 remote from the facing layer 22; and

the polyurethane board 24 is arranged on the vacuum insulation panel 23, and the construction proportion is as follows: the outer sheet plate with the thickness of 50cm, the vacuum insulation panel with the thickness of 30cm, the polyurethane plate with the thickness of 70cm and the grouting reinforcement layer with the thickness of 150cm are high in heat preservation performance, wherein the grouting reinforcement layer 3 can be cast in situ, and compared with the traditional integrated composite concrete wallboard, the composite concrete wallboard can effectively avoid collision damage in transportation and is convenient to transport.

As a preferred embodiment, the reinforcing connection assembly 4 comprises:

a needle-shaped connector 41 which is provided in a U-shaped structure and vertically fixed to the heat-insulating wall plate 2;

the number of the vibrating slurry supply structures 5 is two, and each vibrating slurry supply structure 5 is connected to the needle-shaped connecting piece 41 in a sliding manner; and

the installation head 42 is embedded on the inner page plate 1 and is connected with the needle-shaped connecting piece 41, and the grouting liquid supply structure 5 can further improve the firmness between the grouting reinforcement layer and the heat insulation wallboard after concrete pouring on the one hand, and can also ensure the pouring fullness of the concrete inside in the pouring process on the other hand, so that the phenomena of air bubbles, shrinkage or leakage are avoided.

In this embodiment, the slurry supply structure 5 includes:

a sliding sleeve 51 slidably fitted over the needle-shaped connector 41;

an outer body 52 fixed to the sliding sleeve 51 in a sleeved manner;

a guide sleeve 53 coaxially fixed in the outer body 52 and slidably connected to the needle-shaped connector 41;

a shaft disc 54 rotatably disposed at an end of the needle-shaped connector 41 and fixed to the mounting head 42, wherein a threaded tube 55 is fixed to a side of the shaft disc 54 away from the mounting head 42, and the threaded tube 55 is slidably connected with the guide sleeve 53 through a threaded engagement;

a seal cover cylinder 56 which is in sealing sliding sleeve connection with the outside of the outer body 52; and

the inner springs 57 are circumferentially distributed, and each inner spring 57 is connected between the seal cover cylinder 56 and the outer body member 52, that is, the threaded tube 55 can realize axial displacement adjustment of the guide sleeve under the adjustment of threads, so that the overall distribution of the outer body member 52 is conveniently changed (wherein the outer body member can only horizontally slide and does not rotate).

In this embodiment, the two slurry supply structures 5 on the same needle-shaped connecting member 41 are arranged in a staggered manner, so that the internal casting strength is enhanced by the outer body member 52 after the concrete casting is completed; especially, during pouring, workers adopt an external tap to tap the outer wall of the wallboard, and at the moment, the sealing cover cylinder 56 axially slides back and forth under vibration, so that concrete is fully filled, leakage or internal bubbles are prevented from being caused, and the pouring molding quality is prevented from being influenced.

In this embodiment, the slurry supply structure 5 further includes:

a cement chamber 6 disposed in the outer body 52, wherein a plurality of outer nozzles 61 are circumferentially distributed on the cement chamber 6;

a bypass hole 63 which is opened on the side wall of the sealing cap cylinder 56 and is arranged corresponding to the outer nozzle 61;

the ball shaft body 62 is arranged in the outer spray head 61, an inner channel is arranged in the outer spray head 61, the end part of the inner channel can be plugged by the ball shaft body 62, the ball shaft body 62 is symmetrically and obliquely connected with an inner spring, and one end of the inner spring is connected with the outer spray head 61; and

the inner hole 64 is disposed on the needle-shaped connecting member 41, the end lever arms on the needle-shaped connecting member 41 are hollow, a plurality of groups of inner holes 64 are arranged on the needle-shaped connecting member 41, a partition plate 65 is slidably disposed in the inner holes 64, and a plurality of elastic ejector pins (not shown in the figure) are further disposed on the outer body member 42, so that when the outer body member 52 slides to the corresponding inner hole 64, the partition plate 65 is slidably ejected, and it is noted that the elastic ejector pins only partially eject the partition plate, and then the partition plate can perform displacement reset and realize the unidirectional hole blocking effect of the inner hole.

As a preferred embodiment, the first cement concrete is cast in place in the casting gap, and the cement cavity 6 can be correspondingly cast with the second cement concrete after the casting of the first cement concrete is completed, wherein the casting quality of the second cement concrete is higher than that of the first cement concrete, the first cement concrete and the second cement concrete are mixed for use, on one hand, the construction cost is saved, on the other hand, the integral strength of the grouting reinforcement layer is effectively ensured, the second cement concrete is cast by a cement pump through the mounting head 42, and meanwhile, the compaction work is carried out by matching with an external vibrator, so that the up-down distributed diffusion distribution of the second cement concrete is realized, meanwhile, the second cement concrete remained in the needle-shaped connection 41 is completely pumped away after the casting is completed, and the mounting head 42 is capped, so that the solution can be directly injected in the subsequent wallboard disassembly, and the wallboard is convenient to be dismantled and recycled for multiple times.

In this embodiment, the plurality of needle-like connectors 41 are linearly distributed or circumferentially distributed.

In this embodiment, a construction method for a near zero carbon building assembled thermal insulation composite wallboard includes the following steps:

s1, constructing a composite wallboard; the heat preservation wallboard 2 is preferably constructed, wherein the heat preservation wallboard 2 is sequentially provided with a finish coat 22, an outer sheet 21 with the thickness of 50cm, a vacuum heat insulation board 23 with the thickness of 30cm and a polyurethane board 24 with the thickness of 70cm from outside to inside, a casting gap is reserved for on-site concrete casting so as to form a grouting reinforcement layer 3 with the thickness of 150cm, I-steel 11 connects the heat preservation wallboard 2 and the inner sheet 1, and an airtight layer 12 can be arranged outside the inner sheet 1, so that the overall thickness is not more than 0.4m, and the heat transfer coefficient is not more than 0.15W/(. K);

s2, aligning and mounting; correspondingly installing the reserved plug hole positions 31 and the plug steel bars on the ground, wherein the adjacent composite wallboards 2 can be in sealing connection with the tenon strip structures 14 through the dovetail mortises 13, and a plurality of needle-shaped connecting pieces 41 are horizontally connected between the heat-insulating wallboards 2 and the inner page boards 1;

s3, adjusting a framework; the staff adjusts the left-right distribution of each vibrating slurry supply structure 5 through the screwing action on the mounting head 42, so that the vibrating slurry supply structures are distributed in the pouring gap in a staggered way;

s4, concrete pouring; filling the pouring gap with first cement concrete, wherein a worker can adopt an external tap to tap the outer wall of the wallboard, the sealing cover cylinder 56 can axially slide relatively, and the first cement concrete is fully filled in the sliding process, so that a feeding space with the thickness of 20-40cm is reserved;

s5, grouting again; the cement pump is used for injecting the second cement concrete through the mounting head 42, the volume of the second cement concrete is smaller than that of the supplementing space, the second cement concrete is correspondingly distributed at the needle-shaped connecting piece 41 at the moment, and meanwhile, the second cement concrete is matched with an external tap to perform tap work;

s6, subsequent filling; filling the first cement concrete again in the feeding space;

s7, cleaning the hole cover, completely extracting the second cement concrete remained in the needle-shaped connecting piece 41, and sealing the mounting head 42.

The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (3)

1. A fabricated thermal insulation composite wallboard for near zero carbon construction, comprising:

an inner page plate (1);

the heat preservation wallboard (2) is arranged at one side of the inner page plate (1), and a pouring gap is reserved between the heat preservation wallboard and the inner page plate (1);

the inner I-steel (11) is vertically connected to four corners of the inner page plate (1), and one end of the inner I-steel (11) far away from the inner page plate (1) is fixed with the heat preservation wallboard (2);

an airtight layer (12) arranged on the other side of the inner page plate (1);

dovetail mortises (13) are formed in the side edges of the heat-insulating wall boards (2), and tenon strip structures (14) are correspondingly arranged on the side edges of the other sides of the heat-insulating wall boards (2);

the grouting reinforcement layer (3) is arranged in the pouring gap, a plurality of reinforcement connection assemblies (4) are arranged in the grouting reinforcement layer (3), and the reinforcement connection assemblies (4) are vertically connected between the heat insulation wallboard (2) and the inner page plate (1); and

the inserting hole site (31) is arranged at the bottom of the grouting reinforcement layer (3) and is arranged corresponding to inserting steel bars on the ground;

the reinforcing connection assembly (4) comprises:

the needle-shaped connecting piece (41) is arranged into a U-shaped structure and is vertically fixed on the heat-insulating wallboard (2);

the two vibrating slurry supply structures (5) are correspondingly arranged, and each vibrating slurry supply structure (5) is connected to the needle-shaped connecting piece (41) in a sliding manner; and

the mounting head (42) is embedded and arranged on the inner page plate (1) and is connected with the needle-shaped connecting piece (41);

the vibrating slurry supply structure (5) comprises:

a sliding sleeve (51) which is in sliding sleeve connection with the needle-shaped connecting piece (41);

an outer body member (52) which is fixedly sleeved on the sliding sleeve (51);

a guide sleeve (53) coaxially fixed in the outer body member (52) and slidingly connected with the needle-shaped connecting member (41);

the shaft disc (54) is rotatably arranged at the end part of the needle-shaped connecting piece (41) and is fixed with the mounting head (42), a threaded pipe (55) is fixed at one side of the shaft disc (54) away from the mounting head (42), and the threaded pipe (55) is in sliding connection with the guide sleeve (53) through a threaded meshing effect;

a seal cover cylinder (56) which is in sealing sliding sleeve connection with the outside of the outer body part (52); and

the inner springs (57) are circumferentially distributed, and each inner spring (57) is connected between the sealing cover cylinder (56) and the outer body member (52);

the two vibrating slurry supply structures (5) on the same needle-shaped connecting piece (41) are distributed in a staggered manner;

the vibrating slurry supply structure (5) further comprises:

the cement cavity (6) is arranged in the outer body (52), and a plurality of outer spray heads (61) are circumferentially distributed on the cement cavity (6);

the bypass hole (63) is formed in the side wall of the sealing cover cylinder (56) and is arranged corresponding to the outer spray head (61);

the ball shaft body (62) is arranged in the outer spray head (61), an inner channel is arranged in the outer spray head (61), the end part of the inner channel can be plugged by the ball shaft body (62), the ball shaft body (62) is symmetrically and obliquely connected with an inner spring (57), and one end of the inner spring (57) is connected with the outer spray head (61); and

the inner flow holes (64) are arranged on the needle-shaped connecting piece (41), the end lever arms on the needle-shaped connecting piece (41) are of hollow structures, a plurality of groups of inner flow holes (64) are arranged and arranged on the needle-shaped connecting piece (41), a separation plate (65) is arranged in the inner flow holes (64) in a sliding mode, and a plurality of elastic thimble bodies are further arranged on the outer body (52) so that the separation plate (65) is pushed out in a sliding mode when the outer body (52) slides to the corresponding inner flow hole (64);

the pouring gap is used for pouring first cement concrete in situ, and the cement cavity (6) can be used for correspondingly pouring second cement concrete after the first cement concrete is poured;

a plurality of said needle-like connectors (41) are distributed linearly or circumferentially.

2. A fabricated thermal insulation composite wall panel for near zero carbon construction according to claim 1, wherein the thermal insulation wall panel (2) comprises:

an outer sheet (21);

a facing layer (22) disposed on the outer sheet (21) on a side thereof remote from the inner sheet (1);

a vacuum insulation panel (23) arranged on one side of the outer page plate (21) far away from the finish layer (22); and

and a polyurethane plate (24) which is arranged on the vacuum insulation panel (23).

3. The construction method for the near-zero carbon building assembled heat-insulation composite wallboard according to any one of claims 1-2, comprising the following steps:

s1, constructing a composite wallboard; the heat preservation wallboard (2) is preferentially constructed, wherein the heat preservation wallboard is sequentially provided with a finish coat (22), an outer sheet plate (21) with the thickness of 50cm, a vacuum heat insulation plate (23) with the thickness of 30cm and a polyurethane plate (24) with the thickness of 70cm from outside to inside, a casting gap is reserved for on-site concrete casting so as to form a grouting reinforcement layer (3) with the thickness of 150cm, I-steel (11) is used for connecting the heat preservation wallboard (2) and an inner sheet plate (1) with the thickness of 50cm, and an airtight layer (12) can be arranged outside the inner sheet plate (1), so that the overall thickness is not more than 0.4m, and the heat transfer coefficient is not more than 0.15W/(. Multidot.K);

s2, aligning and mounting; correspondingly installing reserved plug-in hole sites (31) and plug-in steel bars on the ground, wherein adjacent composite wallboards can be in sealing connection with a tenon strip structure (14) through dovetail mortises (13), and a plurality of needle-shaped connecting pieces (41) are horizontally connected between the heat-insulating wallboards (2) and the inner page plates (1);

s3, adjusting a framework; the staff adjusts the left-right distribution of each vibrating slurry supply structure (5) through the screwing action on the mounting head (42) so as to lead the vibrating slurry supply structures to be distributed in the pouring gap in a staggered way;

s4, concrete pouring; filling the pouring gap with first cement concrete, wherein a worker can adopt an external tap to tap the outer wall of the wallboard, the sealing cover cylinder (56) can axially slide relatively, and the first cement concrete is fully filled in the sliding, so that a feeding space with the thickness of 20cm-40cm is reserved;

s5, grouting again; the cement pump is used for injecting second cement concrete through the mounting head (42) and is smaller than the space capacity of the supplementing and feeding, and the second cement concrete is correspondingly distributed at the needle-shaped connecting piece (41) and is matched with an external tap to perform tap work;

s6, subsequent filling; filling the first cement concrete again in the feeding space;

s7, cleaning the hole and sealing the cover, completely extracting the second cement concrete remained in the needle-shaped connecting piece (41), and sealing the mounting head (42).