阅读说明：本技术 一种用于检查井和管道接口处涌水的非开挖修复构件及方法 (Trenchless repairing component and method for water gushing at joint of inspection well and pipeline ) 是由 刘卡 黄荣敏 成涛 张�浩 段海波 王晓明 成浩科 文铖 欧阳蔚 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种用于检查井和管道接口处涌水的非开挖修复构件及方法,它包括与问题检查井室相接的外侧涌水的管道,所述管道的待修复渗漏点所在位置通过第一内支撑胀环固定安装有橡胶套筒,所述橡胶套筒的另一端内部支撑安装有第二内支撑胀环,所述第二内支撑胀环的外部固定安装有外支撑环,并将橡胶套筒的端头夹紧固定在两者之间；所述第一内支撑胀环和第二内支撑胀环之间,并位于橡胶套筒的内部呈均布环形布置有多根纵向支撑板；所述橡胶套筒延伸出管道一段长度,并使其端头部位位于问题检查井室的内部；所述问题检查井室的内底部,并位于橡胶套筒的端头部位支撑有模板。通过非开挖修复方式完成此类缺陷的修复,且修复质量可靠、成本较低。(The invention discloses a trenchless repairing component and a trenchless repairing method for water gushing at an interface of an inspection well and a pipeline, wherein the trenchless repairing component comprises an outer water gushing pipeline connected with a problem inspection well chamber, a position of a leakage point to be repaired of the pipeline is fixedly provided with a rubber sleeve through a first inner supporting expansion ring, the other end of the rubber sleeve is internally provided with a second inner supporting expansion ring in a supporting way, the outer part of the second inner supporting expansion ring is fixedly provided with an outer supporting ring, and the end head of the rubber sleeve is clamped and fixed between the inner supporting expansion ring and the outer supporting ring; a plurality of longitudinal supporting plates are uniformly distributed and annularly arranged between the first inner supporting expansion ring and the second inner supporting expansion ring and positioned in the rubber sleeve; the rubber sleeve extends out of the pipeline for a section of length, and the end part of the rubber sleeve is positioned inside the problem inspection well chamber; and a template is supported at the end part of the rubber sleeve at the inner bottom of the problem inspection well chamber. The defects are repaired in a non-excavation repairing mode, the repairing quality is reliable, and the cost is low.)

1. The utility model provides a component is restoreed in non-excavation that is used for inspection shaft and pipeline kneck to gush water which characterized in that: the device comprises a pipeline (4) which is connected with a problem inspection well chamber (14) and is flooded at the outer side, wherein a rubber sleeve (13) is fixedly arranged at the position of a leakage point (7) to be repaired of the pipeline (4) through a first inner supporting expansion ring (5), a second inner supporting expansion ring (11) is supported and arranged inside the other end of the rubber sleeve (13), an outer supporting ring (10) is fixedly arranged outside the second inner supporting expansion ring (11), and the end of the rubber sleeve (13) is clamped and fixed between the first inner supporting expansion ring and the second inner supporting expansion ring; a plurality of longitudinal supporting plates (6) are uniformly and annularly arranged between the first inner supporting expansion ring (5) and the second inner supporting expansion ring (11) and positioned in the rubber sleeve (13); the rubber sleeve (13) extends out of the pipeline (4) for a length, and the end part of the rubber sleeve is positioned inside the problem inspection well chamber (14); the inner bottom of the problem inspection well chamber (14) is supported with a template (12) at the end part of the rubber sleeve (13).

2. The trenchless rehabilitation section for water gushes at an inspection well and pipeline interface of claim 1, wherein: first support expander (5) adopt the first subdivision structure of multilobe, and every first subdivision structure all includes first arc main part (502) respectively, be provided with on the both ends inside wall of first arc main part (502) and be used for assembling first subdivision structure first connecting seat (501) that link to each other, equidistant processing has a plurality of first screw holes (503) of arranging side by side on first arc main part (502).

3. The trenchless rehabilitation section for water gushes at an inspection well and pipeline interface of claim 1, wherein: the second inner support expansion ring (11) adopts a multi-petal second split structure, each second split structure respectively comprises a second arc-shaped plate main body (1102), the inner side walls of two ends of the first arc-shaped plate main body (1102) are provided with second connecting seats (1101) for assembling and connecting the second split structures, and a plurality of second threaded holes (1103) which are arranged side by side are machined in the second connecting seats (1101) at equal intervals; the middle part of the second connecting seat (1101) is provided with a first elongated connecting groove (1104).

4. The trenchless rehabilitation section for water gushes at an inspection well and pipeline interface of claim 1, wherein: outer support ring (10) adopt multilobe third subdivision structure, and every third subdivision structure all includes third arc main part (1002) respectively, be provided with on the both ends lateral wall of third arc main part (1002) and be used for third subdivision structure equipment third connecting seat (1001) that link to each other, equidistant processing has a plurality of third screw holes (1003) of arranging side by side on third connecting seat (1001).

5. The trenchless rehabilitation section for water gushes at an inspection well and pipeline interface of claim 1, wherein: the longitudinal support plate (6) comprises a support plate main body (602), and a first matching waist-shaped hole (601) matched with a first threaded hole (503) of the first support expansion ring (5) is processed at one end of the support plate main body (602); and a second matching waist-shaped hole (603) matched with a second threaded hole (1103) of a second inner supporting expansion ring (11) is processed at the other end of the supporting plate main body (602).

6. The trenchless rehabilitation section for water gushes at an inspection well and pipeline interface of claim 1, wherein: during repair, the position of the leakage point (7) to be repaired is communicated with a flow guide pipe (9) for pressure relief, and a pouring area (8) is formed in an area surrounded by the template (12), the rubber sleeve (13) and the problem inspection well chamber (14).

7. A method of using the trenchless rehabilitation kit of any of claims 1-6 for water gushing remediation at an inspection well and pipeline interface comprising the steps of:

the method comprises the following steps: plugging and drainage guiding are carried out on a pipeline (4) of a problem inspection well chamber (14) to be repaired and a pipeline (15) on the other side, and the water level of the pipe section is reduced;

step two: pretreating the position of the pipe orifice at the leakage point (7) to be repaired;

step three: installing a rubber sleeve (13) inside the pipeline (4) on the water inrush side through a first inner supporting expansion ring (5); if the pipeline (4) which gushes water from the outer side is cantilevered into the problem inspection well chamber (14), the installation depth of the first inner support expansion ring (5) is ensured to be longer than the cantilevered length, and the first inner support expansion ring (5) is prevented from bursting the pipeline;

step four: one end of a longitudinal support plate (6) is fixedly connected with a first inner support expansion ring (5) through a bolt;

step five: arranging a second inner support expansion ring (11) and an outer support ring (10) at the other end of the rubber sleeve (13), penetrating the rubber sleeve (13) through bolts to simultaneously connect the second inner support expansion ring (11) and the outer support ring (10), completing the splicing of the outer support ring (10), screwing the bolts at the spliced part, and splicing the second inner support expansion ring (11);

step six: the other end of the longitudinal support plate (6) is fixedly connected with a second inner support expansion ring (11) through a bolt;

step seven: arranging and fixing a flow guide pipe (9) for pressure relief at the water inflow position of the leakage point (7) to be repaired, and ensuring that the allowable water passing amount of the flow guide pipe (9) is matched with the water inflow amount;

step eight: a concrete pouring template (12) is arranged at the positions of the second inner support expansion ring (11) and the outer support ring (10), the lower part of the template (12) is closely attached to the bottom of the problem inspection well chamber (14), the side surface of the template is also closely attached to the side wall of the problem inspection well chamber (14), and the upper part of the template is higher than the rubber sleeve (13) by a certain height;

step nine: pouring concrete in an area surrounded by the template (12), the rubber sleeve (13) and the problem inspection well chamber (14), and vibrating the concrete to be dense;

step ten: after the concrete in the pouring area (8) reaches a certain strength, the template (12) is dismantled and the guide pipe (9) is plugged;

step eleven: and removing the plugging and drainage guide at the upper and lower streams.

8. The method of using the trenchless rehabilitation kit of claim 7 for water gushing rehabilitation at an inspection well and pipeline interface, wherein: the specific pretreatment method in the second step is to perform scouring cleaning pretreatment on the position near the pipe orifice at the leakage point (7) to be repaired to ensure that the inner surface of the pipeline has no sludge or soft layer; and the problem inspection well chamber (14) on the water burst side is subjected to scouring cleaning and obstacle cleaning pretreatment, so that the inner surface of the problem inspection well chamber (14) on the water burst side is free of silt, obstacles or soft layers.

9. The method of using the trenchless rehabilitation kit of claim 7 for water gushing rehabilitation at an inspection well and pipeline interface, wherein: the length L of the threaded part of the bolt in the fourth step does not exceed the sum h1+ h2 of the thickness h1 of the first inner support expansion ring (5) and the thickness h2 of the longitudinal support plate (6), and the bolt is prevented from bursting the rubber sleeve (13).

10. The method of using the trenchless rehabilitation kit of claim 7 for water gushing rehabilitation at an inspection well and pipeline interface, wherein: in the eighth step, if the problem inspection well chamber (14) is too large, the template (12) is set to be a wrapping type, a ring is formed on the outer side of the rubber sleeve (13), and a certain distance is reserved between the template and the side face of the rubber sleeve (13);

the upper part of the template (12) is provided with an opening, or a customized template is adopted to reduce the installation time of the template and improve the construction quality.

Technical Field

The invention relates to the field of municipal engineering, in particular to a trenchless repairing component and a trenchless repairing method for water gushing at an interface of an inspection well and a pipeline.

Background

Many municipal drainage pipe networks in China have serious defects due to construction quality problems or insufficient maintenance, the general underground water level along the Yangtze river and in the southeast coastal cities is high, and a large amount of sewage is easy to enter the pipe networks due to the defects of the pipelines, so that the operation and maintenance of the pipe networks are greatly adversely affected, and the load of sewage plants is increased. Considering factors such as traffic influence, investment cost, construction period and the like, trenchless repair is generally preferred. However, for the water gushing condition at the joint of the inspection well and the pipeline, grouting generally has difficulty in achieving the expected effect, other non-excavation repairing modes are not suitable, and excavation repairing is not convenient to adopt due to the fact that the buried depth of a part of pipelines is large or due to the fact that construction conditions are limited and the like.

Disclosure of Invention

The invention aims to provide a trenchless repairing component and a trenchless repairing method for water gushing at an interface of an inspection well and a pipeline, which can repair defects in a trenchless repairing mode, and have reliable repairing quality and lower cost.

In order to achieve the technical features, the invention is realized as follows: a non-excavation repair component for water gushing at an interface of an inspection well and a pipeline comprises the pipeline which is connected with a problem inspection well chamber and is used for water gushing from the outer side, a position of a leakage point to be repaired of the pipeline is fixedly provided with a rubber sleeve through a first inner supporting expansion ring, the inner part of the other end of the rubber sleeve is provided with a second inner supporting expansion ring in a supporting way, the outer part of the second inner supporting expansion ring is fixedly provided with an outer supporting ring, and the end of the rubber sleeve is clamped and fixed between the first inner supporting expansion ring and the second inner supporting expansion ring; a plurality of longitudinal supporting plates are uniformly distributed and annularly arranged between the first inner supporting expansion ring and the second inner supporting expansion ring and positioned in the rubber sleeve; the rubber sleeve extends out of the pipeline for a section of length, and the end part of the rubber sleeve is positioned inside the problem inspection well chamber; and a template is supported at the end part of the rubber sleeve at the inner bottom of the problem inspection well chamber.

The first supporting expansion ring is of a multi-petal first split structure, each first split structure comprises a first arc-shaped plate main body, first connecting seats used for assembling the first split structures are arranged on the inner side walls of the two ends of the first arc-shaped plate main body, and a plurality of first threaded holes arranged side by side are formed in the first arc-shaped plate main body in an equidistant mode.

The second inner support expansion ring adopts a multi-petal second split structure, each second split structure respectively comprises a second arc-shaped plate main body, second connecting seats used for assembling and connecting the second split structures are arranged on the inner side walls of the two ends of the first arc-shaped plate main body, and a plurality of second threaded holes which are arranged side by side are processed on the second connecting seats at equal intervals; the middle part of the second connecting seat is provided with a first strip-shaped connecting groove.

The outer support ring adopts the third subdivision structure of multilobe, and every third subdivision structure all includes the third arc main part respectively, be provided with on the both ends lateral wall of third arc main part and be used for the third connecting seat that links to each other with the equipment of third subdivision structure, equidistant processing has a plurality of third screw holes of arranging side by side on the third connecting seat.

The longitudinal support plate comprises a support plate main body, and a first matching waist-shaped hole matched with a first threaded hole of the first support expansion ring is formed in one end of the support plate main body; and a second matching waist-shaped hole matched with a second threaded hole of a second inner support expansion ring is processed at the other end of the support plate main body.

During repair, the position of the leakage point to be repaired is communicated with a flow guide pipe for pressure relief, and a pouring area is formed in an area surrounded by the template, the rubber sleeve and the problem inspection well chamber.

The method for repairing water burst at the interface of an inspection well and a pipeline by using the trenchless repairing component comprises the following steps:

the method comprises the following steps: plugging and drainage guiding are carried out on the pipeline of the problem inspection well chamber to be repaired and the pipeline on the other side, and the water level of the pipeline section is reduced;

step two: pretreating the position of a pipe orifice at a leakage point to be repaired;

step three: installing a rubber sleeve inside the pipeline on the water inrush side through a first inner support expansion ring; if the pipeline with water gushing from the outer side is cantilevered into the problem inspection well chamber, the installation depth of the first inner support expansion ring is ensured to be longer than the cantilever length, and the first inner support expansion ring is prevented from bursting the pipeline;

step four: one end of the longitudinal support plate is fixedly connected with the first inner support expansion ring through a bolt;

step five: arranging a second inner support expansion ring and an outer support ring at the other end part of the rubber sleeve, penetrating the rubber sleeve through a bolt and simultaneously connecting the second inner support expansion ring and the outer support ring, completing the splicing of the outer support ring, screwing the bolt at the splicing part, and then splicing the second inner support expansion ring;

step six: fixedly connecting the other end of the longitudinal support plate with a second inner support expansion ring through a bolt;

step seven: arranging a guide pipe for pressure relief at the water inflow position of a leakage point to be repaired, and fixing the guide pipe to ensure that the allowable water passing amount of the guide pipe is matched with the water inflow amount;

step eight: mounting concrete pouring templates at the positions of the second inner support expansion ring and the outer support ring, wherein the lower part of each template is closely attached to the bottom of the problem inspection well chamber, the side surfaces of the templates are also closely attached to the side walls of the problem inspection well chamber, and the upper part of each template is higher than the rubber sleeve by a certain height;

step nine: pouring concrete in an area defined by the template, the rubber sleeve and the problem inspection well chamber, and vibrating the concrete to be compact;

step ten: after the concrete in the pouring area reaches a certain strength, removing the template and plugging the flow guide pipe;

step eleven: and removing the plugging and drainage guide at the upper and lower streams.

The specific pretreatment method in the second step is to carry out scouring cleaning pretreatment on the position near the pipe orifice at the leakage point to be repaired so as to ensure that the inner surface of the pipeline has no sludge or soft layer; and the problem inspection well chamber on the water burst side is subjected to scouring cleaning and obstacle cleaning pretreatment, so that the inner surface of the problem inspection well chamber on the water burst side is ensured to be free of sludge, obstacles or soft layers.

And in the fourth step, the length L of the thread part of the bolt does not exceed the sum h1+ h2 of the thickness h1 of the first inner support expansion ring and the thickness h2 of the longitudinal support plate, so that the bolt is prevented from bursting the rubber sleeve.

In the eighth step, if the problem inspection well chamber is too large, the template is set to be a wrapping type, a ring is formed outside the rubber sleeve, and a certain distance is reserved between the template and the side face of the rubber sleeve;

the upper part of the template is provided with an opening, or a customized template is adopted to reduce the installation time of the template and improve the construction quality.

The invention has the following beneficial effects:

1. by adopting the trenchless repairing component provided by the invention, the repair of the leakage of the inspection well can be completed in a trenchless repairing mode, the repairing quality is reliable, and the cost is lower.

2. This through adopt behind the improvement expand ring and the rubber sleeve who widens to prolong the pipeline interface, then realize the water shutoff of pouring of seepage position through concreting to finally realize restoreing.

3. The first inner supporting expansion ring can be used for reliably connecting and fixing the rubber sleeve and the pipeline.

4. The inside of the rubber sleeve can be reliably supported and fixed through the longitudinal support plate, and deformation of the rubber sleeve is prevented.

5. The other end of the rubber sleeve can be reliably supported and fixed through the outer supporting ring and the second inner supporting expansion ring.

6. Can carry out the water conservancy diversion to the seepage position through the honeycomb duct, and then play the purpose of pressure release, guarantee follow-up normal process of pouring and pour the quality.

7. A closed casting area can be formed by means of a corresponding formwork.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a front view of a first split structure of the first inner support expander of the present invention.

Fig. 3 is a side view of a first split structure of the first inner support expander of the present invention.

Fig. 4 is a front view of the longitudinal support plate of the present invention.

Fig. 5 is a front view of a second split structure of the second inner support expander of the present invention.

Fig. 6 is a side view of a second split structure of the second inner support expander of the present invention.

Fig. 7 is a front view of a third split structure of the outer support ring of the present invention.

Fig. 8 is a side view of a third split structure of the outer support ring of the present invention.

FIG. 9 is a state diagram of a step in the construction process of the present invention.

FIG. 10 is a state diagram of three steps in the concrete construction process of the present invention.

FIG. 11 is a state diagram of the fourth step in the concrete construction process of the present invention.

FIG. 12 is a state diagram of the fifth step in the concrete construction process of the present invention.

FIG. 13 is a state diagram of the seventh step in the concrete construction process of the present invention.

FIG. 14 is a state diagram of the eighth step in the concrete construction process of the present invention.

In the figure: the method comprises the following steps of (1) inspecting a shaft, the ground 2, an underground water level 3, a pipeline 4, a first inner supporting expansion ring 5, a longitudinal supporting plate 6, a leakage point 7 to be repaired, a pouring area 8, a flow guide pipe 9, an outer supporting ring 10, a second inner supporting expansion ring 11, a template 12, a rubber sleeve 13, a problem inspection well chamber 14 and a pipeline 15 on the other side;

a first connecting seat 501, a first arc-shaped plate main body 502 and a first threaded hole 503;

a first mating waist-shaped hole 601, a support plate main body 602 and a second mating waist-shaped hole 603;

a third connecting seat 1001, a third arc-shaped plate main body 1002 and a third threaded hole 1003;

a second connecting seat 1101, a first arc-shaped plate main body 1102, a second threaded hole 1103 and a first elongated connecting slot 1104.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

Example 1:

referring to fig. 1-8, a trenchless repairing component for water gushing at an inspection well and pipeline interface comprises an outer water gushing pipeline 4 connected with a problem inspection well chamber 14, a rubber sleeve 13 is fixedly installed at the position of a leakage point 7 to be repaired of the pipeline 4 through a first inner supporting expansion ring 5, a second inner supporting expansion ring 11 is installed inside the other end of the rubber sleeve 13 in a supporting mode, an outer supporting ring 10 is fixedly installed outside the second inner supporting expansion ring 11, and the end of the rubber sleeve 13 is clamped and fixed between the inner supporting expansion ring and the second inner supporting expansion ring 11; a plurality of longitudinal support plates 6 are uniformly and annularly arranged between the first inner support expansion ring 5 and the second inner support expansion ring 11 and in the rubber sleeve 13; the rubber sleeve 13 extends out of the pipeline 4 for a length, and the end part of the rubber sleeve is positioned inside the problem inspection well chamber 14; the problem inspection chamber 14 has an inner bottom portion and supports a template 12 at the end of a rubber sleeve 13. By adopting the repair component, the repair component can be used for repairing leakage of the inspection well, and has reliable repair quality and lower cost. In the repairing process, excavation is not needed, and the repairing construction amount is effectively reduced. The construction cost is reduced.

Further, first support expander 5 adopts the first subdivision structure of multilobe, and every first subdivision structure all includes first arc main part 502 respectively, be provided with on the both ends inside wall of first arc main part 502 and be used for assembling the first connecting seat 501 that links to each other with first subdivision structure, equidistant processing has a plurality of first screw holes 503 of arranging side by side on first arc main part 502. The first supporting expander 5 can be used for reliably connecting and fixing the rubber sleeve 13 and the pipeline 4. The split structure is adopted, so that the fixed installation is convenient.

Further, the second inner support expansion ring 11 adopts a multi-petal second split structure, each second split structure respectively comprises a second arc-shaped plate main body 1102, the inner side walls of the two ends of the first arc-shaped plate main body 1102 are provided with second connecting seats 1101 for assembling and connecting the second split structures, and a plurality of second threaded holes 1103 arranged side by side are processed on the second connecting seats 1101 at equal intervals; a first connecting groove 1104 with a long strip shape is processed in the middle of the second connecting seat 1101. The second inner support expander 11 can be used to reliably support the downstream open end of the rubber sleeve 13 and ensure that the ends of the longitudinal support plates 6 can be connected and secured. The split structure is adopted, so that the fixed installation is convenient.

Further, the outer support ring 10 adopts a multi-petal third split structure, each third split structure comprises a third arc-shaped plate main body 1002, third connecting seats 1001 used for assembling and connecting the third split structures are arranged on the outer side walls of the two ends of the third arc-shaped plate main body 1002, and a plurality of third threaded holes 1003 which are arranged side by side are processed on the third connecting seats 1001 at equal intervals. The outer support ring 10 can be used to fix the end of the rubber sleeve 13. The split structure is adopted, so that the fixed installation is convenient.

Further, the longitudinal support plate 6 comprises a support plate main body 602, and a first matching waist-shaped hole 601 for matching with the first threaded hole 503 of the first support expander 5 is processed at one end of the support plate main body 602; the other end of the support plate main body 602 is provided with a second matching waist-shaped hole 603 for matching with the second threaded hole 1103 of the second inner support expander 11. The longitudinal support plate 6 can be used to reliably support the rubber sleeve 13.

Further, during repair, a flow guide pipe 9 for pressure relief is communicated with the position of the leakage point 7 to be repaired, and a pouring area 8 is formed in an area surrounded by the template 12, the rubber sleeve 13 and the problem inspection well chamber 14. The honeycomb duct can carry out the water conservancy diversion to the seepage position, and then plays the purpose of pressure release, has guaranteed follow-up normal process of pouring and has pour the quality.

Example 2:

referring to fig. 9-14, a method of using a trenchless rehabilitation member for water gushing rehabilitation at an interface of an inspection well and a pipeline, comprising the steps of:

the method comprises the following steps: plugging and draining the pipeline 4 of the problem inspection well chamber 14 to be repaired and the pipeline 15 on the other side, and reducing the water level of the pipeline section;

step two: pretreating the position of the pipe orifice at the leakage point 7 to be repaired;

step three: installing a rubber sleeve 13 inside the pipeline 4 on the water inrush side through a first inner supporting expansion ring 5; if the pipeline 4 which gushes water from the outer side is cantilevered into the problem inspection well chamber 14, the installation depth of the first inner support expansion ring 5 is ensured to be longer than the cantilevered length, and the first inner support expansion ring 5 is prevented from bursting the pipeline;

step four: one end of a longitudinal support plate 6 is fixedly connected with a first inner support expansion ring 5 through a bolt;

step five: arranging a second inner support expansion ring 11 and an outer support ring 10 at the other end of the rubber sleeve 13, penetrating the rubber sleeve 13 through a bolt to simultaneously connect the second inner support expansion ring 11 and the outer support ring 10, completing the splicing of the outer support ring 10, screwing the bolt at the splicing position, and splicing the second inner support expansion ring 11;

step six: the other end of the longitudinal support plate 6 is fixedly connected with a second inner support expansion ring 11 through a bolt;

step seven: arranging a draft tube 9 for pressure relief at the water inflow position of the leakage point 7 to be repaired, and fixing the draft tube 9 to ensure that the allowable water passing amount of the draft tube 9 is matched with the water inflow amount;

step eight: a concrete pouring template 12 is arranged at the positions of the second inner support expanding ring 11 and the outer support ring 10, the lower part of the template 12 is closely attached to the bottom of the problem inspection well chamber 14, the side surface of the template is also closely attached to the side wall of the problem inspection well chamber 14, and the upper part of the template is higher than the rubber sleeve 13 by a certain height;

step nine: pouring concrete in an area surrounded by the template 12, the rubber sleeve 13 and the problem inspection well chamber 14, and vibrating the concrete to be compact;

step ten: after the concrete in the pouring area 8 reaches a certain strength, the template 12 is dismantled and the diversion pipe 9 is plugged;

step eleven: and removing the plugging and drainage guide at the upper and lower streams.

Further, the specific pretreatment method in the second step is to perform scouring cleaning pretreatment on the position near the pipe orifice at the leakage point 7 to be repaired to ensure that the inner surface of the pipeline has no sludge or soft layer; and the problem inspection well chamber 14 on the water burst side is subjected to scouring cleaning and obstacle cleaning pretreatment, so that the inner surface of the problem inspection well chamber 14 on the water burst side is ensured to be free of silt, obstacles or soft layers.

Further, the length L of the thread part of the bolt in the fourth step does not exceed the sum h1+ h2 of the thickness h1 of the first inner support expander 5 and the thickness h2 of the longitudinal support plate 6, so that the bolt is prevented from bursting the rubber sleeve 13.

Further, if the problem inspection well chamber 14 is too large in the step eight, the template 12 is set to be of a wrapping type, a ring is formed outside the rubber sleeve 13, and a certain distance is reserved between the template and the side face of the rubber sleeve 13; the upper part of the formwork 12 is provided with an opening, or a customized formwork is adopted to reduce the formwork installation time and improve the construction quality.