阅读说明：本技术 一种大直径管道封堵水源的方法 (Method for plugging water source of large-diameter pipeline ) 是由 李志强 李跃龙 郝兴华 于 2019-08-29 设计创作，主要内容包括：本发明涉及一种大直径管道封堵水源的方法,包括如下步骤：步骤一、在所述管道待封堵部位的上游侧依次设置两个封堵气囊对水源进行封堵,两个所述封堵气囊间隔预设距离设置；步骤二、在所述待封堵部位的管道顶部设置一开口,在所述开口的前后两侧的管道内支设模板,并从所述开口处浇筑混凝土对所述管道进行封堵；步骤三、混凝土凝固后,将所述封堵气囊和所述模板从所述管道内取出。本发明提供的大直径管道封堵水源的方法可快速、经济的对大直径管道进行封堵水源,封堵效果好,降低了施工难度,适用于工程施工时对废弃的地下大直径管道的水源进行封堵,为现场施工创造良好的条件。(The invention relates to a method for plugging a water source by a large-diameter pipeline, which comprises the following steps: the method comprises the following steps that firstly, two plugging air bags are sequentially arranged on the upstream side of a to-be-plugged part of the pipeline to plug a water source, and the two plugging air bags are arranged at a preset distance; secondly, an opening is formed in the top of the pipeline at the position to be plugged, templates are supported in the pipelines on the front side and the rear side of the opening, and concrete is poured from the opening to plug the pipeline; and step three, after the concrete is solidified, taking the plugging air bag and the template out of the pipeline. The method for plugging the water source of the large-diameter pipeline provided by the invention can be used for plugging the water source of the large-diameter pipeline quickly and economically, has a good plugging effect, reduces the construction difficulty, is suitable for plugging the water source of the waste underground large-diameter pipeline in engineering construction, and creates good conditions for site construction.)

1. A method for plugging a water source by a large-diameter pipeline is characterized by comprising the following steps:

the method comprises the following steps that firstly, two plugging air bags are sequentially arranged on the upstream side of a to-be-plugged part of the pipeline to plug a water source, and the two plugging air bags are arranged at a preset distance;

secondly, an opening is formed in the top of the pipeline at the position to be plugged, templates are supported in the pipelines on the front side and the rear side of the opening, and concrete is poured from the opening to plug the pipeline;

and step three, after the concrete is solidified, taking the plugging air bag and the template out of the pipeline.

2. The method for plugging a water source of a large-diameter pipeline according to claim 1, wherein in the first step, a diver places a first non-inflated plugging airbag at the upstream side of the to-be-plugged part of the pipeline, inflates the first plugging airbag to a preset pressure, and after inflation is completed, places a second plugging airbag between the to-be-plugged part of the pipeline and the first plugging airbag, and inflates the second plugging airbag to a preset pressure.

3. The method for plugging a water source of a large-diameter pipeline according to claim 1, wherein in the second step, the length of the opening is greater than the inner diameter of the pipeline, and the width of the opening is smaller than the inner diameter of the pipeline.

4. The method for plugging the water source of the large-diameter pipeline according to claim 1, wherein in the second step, before the concrete is poured, the steel bars are planted on the inner wall of the pipeline on two sides of the opening, and the support formwork positions are arranged on the front side and the rear side of the steel bar planting position.

5. The method for plugging a water source of a large-diameter pipeline according to claim 4, wherein the planting bars are threaded steel bars with the diameter of 14mm-18mm, a plurality of threaded steel bars are arranged in the horizontal direction and the vertical direction, and the threaded steel bars are uniformly distributed in all directions.

6. The method for plugging a water source of a large-diameter pipeline according to claim 5, wherein the distance between the adjacent threaded steel bars in each direction is 150mm-250 mm.

7. The method for plugging a water source of a large-diameter pipeline according to claim 4, wherein the position of the embedded steel bars is separated from the position of the supporting template by 100-200 mm.

8. The method for plugging a water source of a large-diameter pipeline according to any one of claims 1 to 7, wherein the concrete is C25P6 grade impervious concrete.

9. The method for plugging a water source of a large-diameter pipeline according to claim 1, wherein the part to be plugged of the pipeline and the arrangement position of the plugging air bag are positioned on two sides of a pipeline inspection well, and the plugging air bag is placed to enter the pipeline from the inspection well.

10. The method for plugging a water source of a large-diameter pipeline according to claim 1, wherein in the third step, the plugging air bag is taken out of the pipeline when the strength of the cast concrete reaches more than 70%.

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a method for plugging a water source by a large-diameter pipeline.

Background

In the reconstruction engineering construction process of the urban shed house area, the original underground sewage and other pipelines are often left in the construction area. When the more shed house district of underground piping reforms transform the engineering construction, peripheral underground pipe network abandonment or intercommunication each other, in order to prevent that local pipeline water from discharging into the construction site in the work progress, need carry out the shutoff to the underground piping water source. For large-diameter underground pipelines, due to the fact that water flow is large and water pressure is large, the external direct water plugging difficulty is large, the water plugging effect is poor, plugging is difficult, the common method for plugging by using the pipeline plugging air bag cannot effectively plug the large-diameter pipelines, water leakage still occurs after the large-diameter pipelines are plugged by using the pipeline plugging air bag, particularly, the situation that air pressure is reduced after the pipeline plugging air bag is used for a long time, and the plugging effect is affected, therefore, a method for plugging a water source of the large-diameter pipelines is needed, and the problems in the prior art are solved.

Disclosure of Invention

In view of this, the present invention aims to provide a method for plugging a water source in a large-diameter pipeline, and aims to solve the technical problems of high water plugging difficulty and poor water plugging effect when plugging a water source in a large-diameter pipeline.

According to the invention, the method for plugging the water source of the large-diameter pipeline comprises the following steps:

the method comprises the following steps that firstly, two plugging air bags are sequentially arranged on the upstream side of a to-be-plugged part of the pipeline to plug a water source, and the two plugging air bags are arranged at a preset distance;

secondly, an opening is formed in the top of the pipeline at the position to be plugged, templates are supported in the pipelines on the front side and the rear side of the opening, and concrete is poured from the opening to plug the pipeline;

and step three, after the concrete is solidified, taking the plugging air bag and the template out of the pipeline.

Preferably, in the first step, a diver places a first non-inflated plugging air bag at the upstream side of the part to be plugged of the pipeline, inflates the first plugging air bag to a preset pressure, places a second plugging air bag between the part to be plugged of the pipeline and the first plugging air bag after inflation is completed, and inflates the second plugging air bag to the preset pressure.

Preferably, in the second step, the length of the opening is greater than the inner diameter of the pipeline, and the width of the opening is smaller than the inner diameter of the pipeline.

Preferably, in the second step, before concrete is poured, steel bars are planted on the inner walls of the pipelines on two sides of the opening, and the support formwork positions are arranged on the front side and the rear side of the steel bar planting positions.

Preferably, the embedded steel bars are threaded steel bars with the diameter of 14mm-18mm, the threaded steel bars are arranged in the horizontal direction and the vertical direction, and the threaded steel bars are uniformly distributed in all directions.

Preferably, the distance between adjacent said rebar in each direction is 150mm-250 mm.

Preferably, the distance between the position of the embedded steel bars and the position of the supporting template is 100mm-200 mm.

Preferably, the concrete is C25P6 grade impervious concrete.

Preferably, the part to be blocked of the pipeline and the arrangement position of the blocking air bag are positioned at two sides of one pipeline inspection well, and the blocking air bag enters the pipeline from the inspection well when being placed.

Preferably, in the third step, when the strength of the poured concrete reaches more than 70%, the plugging air bag is taken out from the pipeline.

According to the method for plugging the water source of the large-diameter pipeline, after the water source at the upstream side is plugged by the two plugging air bags, the top of the pipeline at the part to be plugged is provided with the opening, the templates are supported in the pipelines at the front side and the rear side of the opening to pour concrete to plug the pipeline, after the plugging air bags plug and cut off the water source at the upstream side of the part to be plugged, enough construction operation conditions and operation time can be provided for the pouring concrete at the part to be plugged, and after the concrete is solidified, the plugging air bags and the templates can be taken out from the pipeline for reuse. The method can rapidly and economically plug the water source of the large-diameter pipeline, has good plugging effect and reduces the construction difficulty. The method is suitable for plugging the water source of the waste underground large-diameter pipeline during engineering construction, and creates good conditions for field construction.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram illustrating a method for plugging a water source in a large-diameter pipeline according to an embodiment of the invention.

Fig. 2 shows a cross-sectional view of the inner cross-section of the pipeline after bar planting is carried out on the inner wall of the pipeline in the method for plugging the water source by the large-diameter pipeline according to the embodiment of the invention.

In the figure: pipeline 1, first shutoff gasbag 2, second shutoff gasbag 3, pipeline inspection shaft 4, twisted steel 5, template 6, template support 7, concrete 8.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

The invention provides a method for plugging a water source by a large-diameter pipeline, which comprises the following steps:

the method comprises the following steps that firstly, two plugging air bags are sequentially arranged on the upstream side of a to-be-plugged part of the pipeline to plug a water source, and the two plugging air bags are arranged at a preset distance.

In the step, a diver carries a first non-inflated plugging airbag 2 to enter the pipeline 1 from a pipeline inspection well 4, the first plugging airbag 2 is placed on the upstream side of a to-be-plugged part of the pipeline, the first plugging airbag 2 is inflated to a preset pressure, after the pipeline 1 is plugged by the first plugging airbag 2, the diver returns to the pipeline inspection well 4 and then carries a second plugging airbag 3 to enter the pipeline 1, the second plugging airbag 3 is placed on the downstream side of the first plugging airbag 2, the second plugging airbag 3 is spaced from the first plugging airbag 2 by a preset distance, the second plugging airbag 3 is inflated to the preset pressure, the second plugging airbag 3 is arranged in front of the pipeline 1, the inner wall of the pipeline 1 where the second plugging airbag 3 is arranged is cleaned, and impurities are removed, so that the second plugging airbag 3 achieves a better plugging effect. Through setting up first shutoff gasbag 2 and second shutoff gasbag 3, 1 shutoff effect of multiplicable pipeline effectively dams the upstream water source in the pipeline 1. In the embodiment, as shown in fig. 1, the part to be blocked of the pipeline is positioned at the rear side of the pipeline inspection well 4, and the first blocking air bag 2 and the second blocking air bag 3 are arranged at the front side of the pipeline inspection well 4. Aerify the shutoff gasbag and can adopt the air compressor machine that is located outside the pipeline inspection shaft 4 to provide the source of gas of aerifing, when the diver got into 1 inside shutoff gasbags that sets up of pipeline, the source of gas pipeline that will aerify the usefulness carries in the lump entering pipeline 1 to make things convenient for the diver to aerify the shutoff gasbag in pipeline 1. It can be understood that more than two plugging air bags can be arranged on the upstream side of the to-be-plugged part of the pipeline 1 to plug the water source.

And step two, arranging an opening at the top of the pipeline at the part to be plugged, supporting templates in the pipelines at the front side and the rear side of the opening, and pouring concrete from the opening to plug the pipeline.

In the step, the length of an opening formed in the top of the pipeline 1 at the part to be blocked is larger than the inner diameter of the pipeline 1, so that the template 6 can be conveniently placed into the pipeline 1 from the opening, and the width of the opening is smaller than the inner diameter of the pipeline 1. Before opening the top of the pipeline 1, the covering on the top of the pipeline 1 is removed, and the concrete on the top of the pipeline 1 is chiseled off by using a breaking hammer.

In order to firmly combine the poured concrete 8 with the inner wall of the pipeline 1, the inner wall of the pipeline 1 at two sides of the opening is embedded with the reinforcing bars before the concrete 8 is poured. When the bar planting, use drilling tool to set up a plurality of drilling on the 1 inner wall of pipeline of opening both sides, clear away drilling, pour into the bar planting and glue, insert the drilling of 1 inner wall of pipeline with the both ends of the twisted steel 5 that the diameter is 14mm-18mm, all set up many twisted steel 5 in the horizontal direction and the vertical direction of 1 inside of pipeline, be parallel to each other between each twisted steel 5 of same direction, and each direction twisted steel 5 evenly arranged, the distance between the adjacent twisted steel 5 of each direction is 150mm-250 mm. As shown in fig. 2, the present embodiment uses the rebar 5 with a diameter of 16mm to plant the rebar on the inner wall of the pipeline 1, and the distance between adjacent rebar 5 in each direction is 200 mm.

The supporting position of a template 6 for pouring concrete 8 is arranged on one side of the embedded bar position, and the position of the template 6 arranged on the front side of the opening is positioned in front of the embedded bar position on the front side of the opening; the position of the template 6 arranged on the rear side of the opening is positioned behind the position of the embedded bars on the rear side of the opening. The distance between the position of the supporting template 6 and the position of the embedded bar is 100mm-200 mm. The front side and the rear side of the template 6 are supported and fixed by using template supports 7, and the template supports 7 adopt a template support fixing structure known in the prior art, which is not described in detail in this embodiment. In this embodiment, the distance between the position of the supporting template 6 and the position of the embedded bar is 150 mm. The "front" and "rear" referred to in this embodiment are defined by the direction of water flow, the upstream side of the water flow being the front side, and the downstream side of the water flow being the rear side.

In this embodiment, the concrete 8 poured at the to-be-plugged part of the pipeline is C25P 6-grade impermeable concrete, so that the plugged pipeline achieves a good water source plugging effect.

And step three, after the concrete is solidified, taking the plugging air bag and the template out of the pipeline.

In the step, when the strength of the poured concrete 8 reaches more than 70%, the plugging air bag is taken out from the pipeline 1, and at the moment, the plugging part of the pipeline 1 can effectively plug the water source of the pipeline 1. A constructor enters the pipeline 1 from the pipeline inspection wells 4 on the front side and the rear side of the plugging part to remove the template 6 for pouring concrete 8 and take out the pipeline 1, and then a diver enters the pipeline 1 from the pipeline inspection well 4 on the front side of the plugging part to deflate the two plugging air bags and take out the pipeline 1, so that the plugging air bags can be recycled.

According to the method for plugging the water source of the large-diameter pipeline, after the water source at the upstream side is plugged by the two plugging air bags, the top of the pipeline at the part to be plugged is provided with the opening, the templates are supported in the pipelines at the front side and the rear side of the opening to pour concrete to plug the pipeline, after the plugging air bags plug and cut off the water source at the upstream side of the part to be plugged, enough construction operation conditions and operation time can be provided for the pouring concrete at the part to be plugged, and after the concrete is solidified, the plugging air bags and the templates can be taken out from the pipeline for reuse. The method can rapidly and economically plug the water source of the large-diameter pipeline, has good plugging effect and reduces the construction difficulty. The method is suitable for plugging the water source of the waste underground large-diameter pipeline during engineering construction, and creates good conditions for field construction.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.