Rapid leaking stoppage method for dike breach

Abstract

The invention provides a rapid leaking stoppage method for a dike breach, and relates to the technical field of hydraulic engineering, and the rapid leaking stoppage method comprises the following steps: S1, breach fixing: fixing two ends of the breach by using steel sheet piles and steel pipe columns capable of bearing corresponding water pressure at stable positions of edges of two ends of the breach; s2, pipe bodies are laid, specifically, a plurality of pipe bodies are laid from the two ends of the dike breach in the direction perpendicular to the dike; s3, piling is conducted on the side, away from the river channel, of the pipe body along the edge of a pipe opening of the laid pipe body; s4, the pipe body is blocked, and a corresponding blocking material is selected to block a pipe opening of the pipe body; s5, a rockfill dam is built, and after sundries and soft soil on the outer side of the crevasse are cleaned, the rockfill dam is laid on the outer side of the pipe body in the crevasse; through rapid throwing and stacking of the steel sheet piles, the steel pipe piles and the pipe bodies, the crevasse with the large water level difference can be preliminarily blocked within a short time, and the crevasse is adjusted and reinforced through subsequent reinforcing measures.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a method for quickly plugging leakage at a dam breach. Background Art

[0002] In the field of water conservancy projects, dams play a vital role in resisting floods and ensuring regional safety. However, due to various natural and man-made factors, such as the huge impact of floods, structural defects of dams themselves, geological changes or poor management and maintenance, dams may burst. When a dam bursts, a large amount of flood water will burst out instantly, causing extremely serious damage to surrounding towns, farmlands, infrastructure, etc., threatening people's lives and property safety; the traditional method of plugging dam breaches is to throw sand, stones and other materials at both ends of the breach to block the breach. This method uses a large amount of sand and gravel, and the on-site working area is small. When the water level difference at both ends is large, it is extremely difficult to close the dam. In addition, this method relies too much on large-scale machinery and complex engineering operations. It is difficult to organize and implement quickly in an emergency, resulting in low blocking efficiency and failure to effectively curb the water flow in a short period of time, causing the breach to further expand and cause greater losses. Summary of the invention

[0003] The purpose of the invention is to provide a method for quickly plugging leaks in dam breaches to solve the technical problems existing in the prior art.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] A method for quickly plugging leaks in a dam breach comprises the following steps: S1: fixing the breach, using steel sheet piles and steel pipe columns capable of withstanding corresponding water pressure to fix the two ends of the breach at stable positions at the edges of both ends of the breach, and using auxiliary structures to suppress the steel sheet pile bodies; S2: laying pipe bodies, using a plurality of pipe bodies to be laid from both ends of the dam breach in a direction perpendicular to the dam, during the laying process, pulling the steel cables that cross the inside of the pipe bodies flat, thereby driving the pipe bodies to be parallel, and tightly connecting the pipe bodies through clamps and steel cables to ensure that the pipe bodies are connected to each other, and then placing them on the breach slope until the breach is evenly filled; S3: piling, On the side of the pipe body away from the river channel, along the edge of the pipe mouth of the laid pipe body, from both sides of the breach toward the center, piles are driven synchronously with the pipe body to reinforce the pipe body; S4: sealing the pipe body, according to the material, working pressure, leakage situation and surrounding environment of the pipe body, the corresponding sealing material is selected, and the pipe mouth of the pipe body is sealed by stacking, welding and clamping; then the connecting gaps are sealed with steel plates, cement plates and stones, and the breach is temporarily sealed; S5: building a stone dam, after cleaning the debris and soft soil outside the breach, along the outside of the pipe body laid in the breach, the predetermined stones and anti-seepage materials are selected to fill the dam body.

[0006] Furthermore, the pipe body in S2 includes: large-diameter steel pipes and engineering pipes, and the length is selected according to the breach size of the dam.

[0007] Furthermore, S2 also includes: placing the pipe body on the top slope at one end of the breach, and connecting and fixing both ends of the pipe body on the embankment with steel cables and steel pipe piles; after the first pipe body is fixed, lower them one by one downward and forward along the breach, and connect and fix them with the already placed pipe bodies.

[0008] Furthermore, after the breach is filled in the pipe body, additional reinforcement steel pipe piles are added to ensure that the pipe body can withstand water pressure and the temporary steel pipe wall is not washed away.

[0009] Furthermore, the pipe body is a steel pipe with a diameter of 800-1200 mm and a high-strength lightweight engineering pipe, and the length is selected according to the breach size of the dam.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) The present invention can preliminarily plug a breach with a large water level difference in a short time through the rapid placement and accumulation of steel sheet piles, steel pipe piles and pipe bodies, and adjust and reinforce the breach through subsequent reinforcement measures, with high plugging efficiency, reliable plugging quality and high safety;

[0012] (ii) The present invention can flexibly adjust the number of pipes and the method of placing them according to the size of the breach, water flow velocity, water level difference, etc., and on-site construction does not need to rely on large-scale mechanical equipment, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the present invention;

[0014] Figure 2 A top view of the present invention;

[0015] Figure 3 is a flow chart of the present invention;

[0016] In the figure: 1. embankment; 2. breach; 3. steel pipe piles; 4. pipe body; 5. steel cable; 6. auxiliary structure. DETAILED DESCRIPTION

[0017] In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0018] Embodiment 1:

[0019] like Figure 1-3 As shown, this embodiment provides a method for quickly plugging a dam breach, comprising the following steps:

[0020] S1: The breach 2 is fixed. At the stable positions at the edges of both ends of the breach 2, steel sheet piles and steel pipe columns 3 that can withstand the corresponding water pressure are used to fix the two ends of the breach. The auxiliary structure 6 is used to suppress the steel sheet pile body. The auxiliary structure 6 is a steel cable and an anchor cable. When used, it is fixedly connected to the steel sheet pile and the surrounding of the dam 1 to enhance the fixing effect. When the impact force of the water flow is too large, the auxiliary structure 6 can fix the steel sheet pile body to prevent it from loosening. The coordinated use of the auxiliary structure 6 and the steel sheet pile can better adapt to various adverse conditions and ensure the sealing effect.

[0021] S2: Laying the pipe body 4, using several pipe bodies 4 to be laid from both ends of the breach 2 of the dam 1 in a direction perpendicular to the dam 1. During the laying process, the steel cable 5 crossing the inside of the pipe body 4 is flattened to drive the pipe body 4 to be parallel, and the pipe bodies 4 are tightly connected by the clamps and the steel cable 5 to ensure that the pipe bodies 4 are connected to each other, and then placed on the slope of the breach 2 until the breach 2 is evenly filled; the pipe body 4 includes: large-diameter steel pipes and engineering pipes, and the length is selected according to the size of the breach 2 of the dam 1. The large-diameter steel pipes and engineering pipes can withstand greater water flow impact and water pressure, which helps to maintain the stability of the sealing structure and is not easily washed away by water flow. After the rescue is over, after proper treatment and maintenance, they can be reused when similar situations occur, thereby improving resource utilization.

[0022] S3: Piling. On the side of the pipe body 4 away from the river channel, along the edge of the pipe mouth of the laid pipe body 4, from both sides of the breach 2 toward the center, piles are driven synchronously with the pipe body 4 to reinforce the pipe body 4. The piling process can quickly form a line of defense, which can fix the pipe body 4 while preventing the water flow from further expanding the breach 2. During the piling process, a mobile pile driver or manual piling can be used.

[0023] S4: Seal the pipe body 4. According to the material, working pressure, leakage situation and surrounding environment of the pipe body 4, select the corresponding sealing material, and seal the pipe mouth of the pipe body 4 by stacking, welding and clamping; then seal the connecting gap with steel plates, cement plates and stones. At this point, the breach 2 is temporarily sealed. The sealing materials are steel plates, rubber plates, sandbags, clay, waterproof membranes, quick-setting materials, etc.

[0024] S5: Build a stone dam, clean up the debris and soft soil outside the breach 2, and then lay it along the outside of the inner pipe body 4 of the breach 2, select the predetermined stones and anti-seepage materials to fill the dam body, arrange drainage facilities at a reasonable position of the stone dam as needed to prevent water seepage, and then repair the water-facing and water-retaining surfaces of the stone dam. Example 2:

[0025] like Figure 1-3 As shown, this embodiment provides a method for quickly plugging a dam breach, comprising the following steps:

[0026] S1: The breach 2 is fixed. At the stable positions at the edges of both ends of the breach 2, steel sheet piles and steel pipe columns 3 that can withstand the corresponding water pressure are used to fix the two ends of the breach. The auxiliary structure 6 is used to suppress the steel sheet pile body. The auxiliary structure 6 is a steel cable and an anchor cable. When used, it is fixedly connected with the steel sheet pile and the surrounding of the dam 1 to enhance the fixing effect. When the impact force of the water flow is too large, the auxiliary structure 6 can fix the steel sheet pile body to prevent it from loosening. The coordinated use of the auxiliary structure 6 and the steel sheet pile can better adapt to various adverse conditions and ensure the blocking effect.

[0027] S2: Laying pipe bodies 4, using several pipe bodies 4 to be laid from both ends of the breach 2 of the dam 1 in a direction perpendicular to the dam 1. During the laying process, the steel cable 5 that crosses the inside of the pipe body 4 is pulled flat to drive the pipe body 4 to be parallel, and the pipe bodies 4 are tightly connected by the clamp and the steel cable 5 to ensure that the pipe bodies 4 are connected to each other, and then the pipe body 4 is placed on the top slope at one end of the breach 2, and the two ends of the pipe body 4 are connected and fixed on the dam 1 with the steel cable 5 and the steel pipe pile 3; when the first pipe body 4 is fixed, it is laid downward and forward one by one along the breach 2. It is lowered and connected and fixed with the already placed pipe body 4; after the pipe body 4 fills the breach 2, reinforced steel pipe piles 3 are added to ensure that the pipe body withstands water pressure and the temporary steel pipe wall is not washed away; the pipe body 4 is a steel pipe and a high-strength lightweight engineering pipeline with a diameter of 800-1200mm, and the length is selected according to the size of the breach 2 of the dam 1. Compared with traditional materials, the high-strength lightweight engineering pipeline is lighter in weight, easier to transport, install and operate, and has better resistance to a variety of corrosive media, thereby extending its service life.

[0028] S3: Piling. On the side of the pipe body 4 away from the river channel, along the edge of the pipe mouth of the laid pipe body 4, from both sides of the breach 2 toward the center, piles are driven synchronously with the pipe body 4 to reinforce the pipe body 4. The piling process can quickly form a line of defense, which can fix the pipe body 4 while preventing the water flow from further expanding the breach 2. During the piling process, a mobile pile driver or manual piling can be used.

[0029] S4: Seal the pipe body 4. According to the material, working pressure, leakage situation and surrounding environment of the pipe body 4, select the corresponding sealing material, and seal the pipe mouth of the pipe body 4 by stacking, welding and clamping; then seal the connecting gap with steel plates, cement plates and stones. At this point, the breach 2 is temporarily sealed. The sealing materials are steel plates, rubber plates, sandbags, clay, waterproof membranes, quick-setting materials, etc.

[0030] S5: Build a stone dam. After cleaning the debris and soft soil outside the breach 2, lay it along the outside of the inner pipe body 4 of the breach 2, select the predetermined stones and anti-seepage materials to fill the dam body, arrange drainage facilities at a reasonable position of the stone dam as needed to prevent water seepage, and then repair the water-facing and water-retaining surfaces of the stone dam.

[0031] It is worth noting that after the stone dam is built, the pipe body 4 inside it can be extracted according to needs. The pipe body extraction process is an extraction method in the prior art and will not be described in detail again.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for quickly plugging a dam breach, characterized in that: The following steps are involved: S1: Breach fixation: At the stable positions at both ends of the breach, steel sheet piles and steel pipe columns that can withstand the corresponding water pressure are used to fix the two ends of the breach, and auxiliary structures are used to suppress the steel sheet piles. S2: Laying pipes, using several pipes to be laid from both ends of the breach in a direction perpendicular to the dam. During the laying process, the steel cables crossing the inside of the pipes are leveled to drive the pipes to be parallel. The pipes are tightly connected by clamps and steel cables to ensure that the pipes are connected to each other. Then, they are placed on the breach slope until the breach is evenly filled. S3: Piling: on the side of the pipe body away from the river channel, along the edge of the pipe opening of the laid pipe body, from both sides of the breach toward the center, piling is performed synchronously with the pipe body to reinforce the pipe body; S4: plugging the pipe body. According to the material, working pressure, leakage and surrounding environment of the pipe body, the corresponding plugging material is selected, and the pipe opening of the pipe body is plugged by stacking, welding and clamping. Then, the connection gap is plugged by steel plate, cement board and stone. At this point, the breach is temporarily plugged. S5: Build a stone dam. After clearing the debris and soft soil outside the breach, lay it along the outside of the pipe body inside the breach and select the predetermined stones and anti-seepage materials to fill the dam body.

2. The method for rapid plugging of dam breach according to claim 1, characterized in that: The pipe body in S2 includes: large-diameter steel pipe and engineering pipe, and the length is selected according to the breach size of the dam.

3. The method for rapid plugging of dam breach according to claim 1, characterized in that: The step S2 also includes: placing the pipe body on the top slope at one end of the breach, and connecting and fixing both ends of the pipe body on the embankment with steel cables and steel pipe piles; after the first pipe body is fixed, lowering them one by one along the breach downward and forward, and connecting and fixing them with the already placed pipe bodies.

4. The method for rapid plugging of dam breach according to claim 3 is characterized by: After the breach is filled up by the pipe body, additional reinforcement steel pipe piles are added to ensure that the pipe body can withstand the water pressure and the temporary steel pipe wall is not washed down.

5. The method for rapid plugging of dam breach according to claim 4, characterized in that: The pipe body is a steel pipe with a diameter of 800-1200mm and a high-strength lightweight engineering pipe, and the length is selected according to the breach size of the dam.

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