阅读说明：本技术 一种地下平衡水压管井的砖砌封堵结构施工方法 (Construction method of brick-built plugging structure of underground balanced water pressure pipe well ) 是由 郭志国 刘凯 张桂军 白尧尧 琚明明 于 2021-08-20 设计创作，主要内容包括：本发明涉及一种地下平衡水压管井的砖砌封堵结构施工方法,上述施工方法包括如下步骤：1)加工砖砌体、水平木板及木楔块,再在水平木板上背贴第一膨胀胶片,在木楔块上背贴第二膨胀胶片；2)在各砖砌体、水平木板及木楔块上标记序号；3)将砖砌体、水平木板及木楔块运送至施工位置,用砖砌体、水平木板及木楔块封堵管井井口；4)在封堵面上涂抹膨润土,再在膨润土层上涂抹速干水泥；5)将管井口背水面管道内的水抽干,观察,若背水面管道内无地下水出现,则可进行后续施工。本发明中利用木材吸水后体积易膨胀增大的特性切割木材制成木楔块,从而利用木楔块与砖砌体及水平木板配合,以挤压、张拉并封堵管井井口,达到良好的封堵、防水效果。(The invention relates to a construction method of a brick-built blocking structure of an underground balanced hydraulic pressure pipe well, which comprises the following steps: 1) processing a brick masonry, a horizontal wood board and a wood wedge block, sticking a first expansion rubber sheet on the back of the horizontal wood board, and sticking a second expansion rubber sheet on the back of the wood wedge block; 2) marking serial numbers on each brick masonry, each horizontal wood board and each wood wedge; 3) conveying the brick masonry, the horizontal wood board and the wood wedge block to a construction position, and plugging a wellhead of the pipe well by using the brick masonry, the horizontal wood board and the wood wedge block; 4) coating bentonite on the plugging surface, and coating quick-drying cement on the bentonite layer; 5) and (4) pumping water in the pipeline on the back surface of the pipe wellhead, observing, and performing subsequent construction if no underground water is present in the pipeline on the back surface. According to the invention, wood is cut into wood wedges by utilizing the characteristic that the volume of the wood is easy to expand and increase after the wood absorbs water, so that the wood wedges are matched with the brick masonry and the horizontal wood board to extrude, stretch and plug the wellhead of the pipe well, and good plugging and waterproof effects are achieved.)

1. A construction method of a brick-built plugging structure of an underground balanced hydraulic pressure pipe well is characterized by comprising the following steps:

1) processing a brick masonry (2), a horizontal wood board (3) and a wood wedge block (4) according to the size of a pipe well (1), sticking a first expansion rubber sheet (5) on the back of the contact surface of the horizontal wood board (3) and the brick masonry (2), and sticking a second expansion rubber sheet (6) on the back of the contact surface of the wood wedge block (4) and the brick masonry (2);

2) marking serial numbers on the brick masonry (2), the horizontal wood board (3) and the wood wedge blocks (4) according to installation positions;

3) the method comprises the steps of conveying the brick masonry (2), the horizontal wood board (3) and the wood wedge block (4) to a construction position, sequentially conveying the brick masonry (2), the horizontal wood board (3) and the wood wedge block (4) to a construction area in sequence, paving the brick masonry (2) at intervals according to the sequence by an underwater operator, paving the horizontal wood board (3) on the brick masonry (2), and inserting the wood wedge block (4) into a gap after finishing paving from bottom to top so as to plug a wellhead of a pipe well (1) by using the brick masonry (2), the horizontal wood board (3) and the wood wedge block (4);

4) after the wooden wedge block (4) absorbs water to be saturated and expands, the well mouth of the pipe well (1) is plugged, then bentonite (7) is coated on the plugging surface formed by plugging, and after the bentonite (7) is coated, a layer of quick-drying cement (8) is coated on the bentonite layer;

5) and (3) pumping water in the pipeline on the back water surface at the opening of the tube well (1), observing, and performing subsequent construction if no underground water is present in the pipeline on the back water surface.

2. The method for constructing a bricked plugging structure of an underground balanced hydraulic piping well according to claim 1, wherein the horizontal wooden boards (3) and the wooden wedges (4) in step 1) are cut from a single piece of wood.

3. The construction method of a bricked blocking structure of an underground balanced hydraulic pressure pipe well according to claim 1 or 2, characterized in that the horizontal wooden boards (3) and the wooden wedges (4) are cut from wood with a water content lower than the balanced water content of the area to be constructed.

Technical Field

The invention relates to the technical field of construction of underground pipe and well plugging in the construction process of constructional engineering, in particular to a construction method of a brick plugging structure of an underground balanced hydraulic pressure pipe well.

Background

The problem that underground pipelines obstruct excavation and need to be blocked or changed lines is often encountered in the construction process of building engineering, particularly in recent years, the rearrangement and planning of urban infrastructure, the rise of underground traffic, urban pipe galleries and other projects in the national range, and when the existing underground pipes and well bottom elevations are located at the elevation of an excavation surface in the construction process of the foundation, the situations that the existing urban rainwater and sewage pipe wells need to be temporarily blocked and changed lines are visible everywhere.

The existing plugging methods include an air bag plugging method, a steel plate plugging method, a masonry plugging method and the like, wherein the air bag plugging method is used mostly, and the steel plate plugging method is inferior. However, in actual construction, the air bag is found to be easily punctured by sharp objects on the ground and washed to an underground pipe well by rainwater in the process of playing a plugging role in the air bag plugging method; furthermore, the underground pipe well has large water impurities which may have pollution corrosion components, and the air bag is made of rubber materials, so that the air bag is easily corroded by the corrosion components in water, and the air bag is mostly used for short-term pipe well plugging; the steel plate plugging method has the problems of limited operation environment space in the pipe well, high construction difficulty, high operation risk and the like.

Disclosure of Invention

Aiming at the problems, the brick plugging structure construction method of the underground balance water pressure pipe well is good in waterproof effect, simple and practical.

The specific technical scheme is as follows:

a construction method of a brick-built plugging structure of an underground balanced hydraulic pressure pipe well is characterized by comprising the following steps:

1) processing a brick masonry, a horizontal wood board and a wood wedge block according to the size of a pipe well, sticking a first expansion rubber sheet on the back of the contact surface of the horizontal wood board and the brick masonry, and sticking a second expansion rubber sheet on the back of the contact surface of the wood wedge block and the brick masonry;

2) marking serial numbers on each brick masonry, each horizontal wood board and each wood wedge according to the installation position;

3) the method comprises the following steps of conveying a brick masonry, a horizontal wood board and a wood wedge block to a construction position, sequentially conveying the brick masonry, the horizontal wood board and the wood wedge block to a to-be-constructed area in sequence, paving the brick masonry at intervals according to the ordinal number by an underwater operator, paving a horizontal wood board on the brick masonry, inserting the wood wedge block into a gap after finishing paving from bottom to top, and plugging a wellhead of a pipe well by using the brick masonry, the horizontal wood board and the wood wedge block;

4) after the wood wedge block absorbs water and is saturated and expands, and the well mouth of the pipe well is plugged, coating bentonite on the plugging surface formed by plugging, and after the bentonite is coated, coating a layer of quick-drying cement on the bentonite layer;

5) and (4) pumping water in the pipeline on the back surface of the pipe wellhead, observing, and performing subsequent construction if no underground water is present in the pipeline on the back surface.

The construction method for the brick-built blocking structure of the underground balanced hydraulic pressure pipe well is also characterized in that the horizontal wood plate 3 and the wood wedge 4 in the step 1) are formed by cutting a whole piece of wood.

The construction method of the brick-built plugging structure of the underground balanced hydraulic pressure pipe well is further characterized in that the horizontal wood boards and the wood wedges are formed by cutting wood with the water content lower than the balanced water content of the area to be constructed.

The beneficial effect of above-mentioned scheme is:

1) according to the invention, wood is cut into wood wedges by utilizing the characteristic that the volume of the wood is easy to expand and increase after the wood absorbs water, so that the wood wedges are matched with the brick masonry and the horizontal wood board to extrude, stretch and plug the wellhead of the pipe well, and good plugging and waterproof effects are achieved;

2) in the invention, the gaps on the surfaces of the brick masonry and the wood wedge blocks are leveled by further utilizing bentonite and quick-drying cement, so that the waterproof effect is further improved;

3) the construction method provided by the application can not damage the existing underground pipe well network line in a large area, and can rapidly remove the plugging facility and connect the broken part of the pipe well after the completion of the engineering facility, so that the pipe network is recovered.

Drawings

Fig. 1 is a schematic front view of a plugging surface provided in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a plugging surface provided in an embodiment of the present invention;

FIG. 3 is a schematic structural view of a horizontal wooden board provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a wood wedge provided in an embodiment of the present invention.

In the drawings: 1. a pipe well; 2. brick masonry; 3. a horizontal wood board; 4. wood wedges; 5. a first intumescent sheet; 6. a second intumescent sheet; 7. bentonite; 8. and (5) quickly drying the cement.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

As shown in fig. 1 to 4, a method for constructing a brick-built plugging structure of an underground balanced hydraulic pressure piping well provided in an embodiment of the present invention includes the following steps:

1) processing a brick masonry 2, a horizontal wood board 3 and a wood wedge 4 according to the size of a pipe well 1, sticking a first expansion rubber sheet 5 on the back of the contact surface of the horizontal wood board 3 and the brick masonry 2, and sticking a second expansion rubber sheet 6 on the back of the contact surface of the wood wedge 4 and the brick masonry 2;

2) marking serial numbers on each brick masonry 2, each horizontal wood board 3 and each wood wedge block 4 according to the installation positions;

3) the method comprises the following steps of conveying a brick masonry 2, a horizontal wood board 3 and a wood wedge 4 to a construction position by using a hanging basket, sequentially conveying the brick masonry 2, the horizontal wood board 3 and the wood wedge 4 to a to-be-constructed area in sequence, paving the brick masonry 2 by underwater operators at intervals according to the sequence, paving a horizontal wood board 3 on the brick masonry 2, and inserting the wood wedge 4 into a gap after finishing the paving from bottom to top so as to plug a wellhead of a pipe well 1 by using the brick masonry 2, the horizontal wood board 3 and the wood wedge 4;

4) after the wood wedge 4 absorbs water and is saturated and expands, and the well mouth of the pipe well 1 is plugged, coating bentonite 7 on the plugging surface formed by plugging, and after the bentonite 7 is coated, coating a layer of quick-drying cement 8 on the bentonite layer;

5) and (3) pumping water in the pipeline on the back surface of the pipe well 1, observing, and if no underground water appears in the pipeline on the back surface, indicating that plugging is successful, then carrying out subsequent earthwork excavation construction.

According to the invention, wood is cut into the wood wedge blocks 4 by utilizing the characteristic that the volume of the wood is easy to expand and increase after water is absorbed, so that the well mouth of the pipe well 1 is extruded, tensioned and plugged by utilizing the matching action of the wood wedge blocks 4, the brick masonry 2 and the horizontal wood board 3, and good plugging and waterproof effects are achieved; furthermore, in the invention, the gaps on the surfaces of the brick masonry 2 and the wood wedge blocks 4 are leveled by utilizing the bentonite 7 and the quick-drying cement 8, so that the waterproof effect is further improved.

In order to facilitate the insertion of the wooden wedge block 4, a first expansion rubber sheet 5 is pasted on the back of the horizontal wooden board 3, and a second expansion rubber sheet 6 is pasted on the back of the wooden wedge block 4, so that the wooden wedge block 4 can be smoothly inserted by utilizing certain scalability of the expansion rubber sheets when the wooden wedge block 4 is inserted from top to bottom; furthermore, in the invention, after the plugging surface is formed, the expansion rubber sheet absorbs water to expand and further plugs the gaps among the brick masonry 2, the horizontal wood board 3 and the wood wedge blocks 4.

The application provides a construction method on the basis that does not influence other underground piping performance drainage function, realized the interim shutoff to the underground piping of construction area, and only need abolish or shift the underground piping in excavation region in construction area foundation ditch excavation and underground piping shaft shutoff in-process, can not cause the influence to the whole function of current underground piping shaft, need not carry out the large tracts of land abolish the piping shaft entity, can demolish the shutoff facility fast and put through the partial piping shaft that abolishes after waiting the engineering facility to accomplish, thereby resume original pipe network.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.