Intelligent control stabilization and diversion retaining system and construction method for rapid consolidation and widening of dikes

Abstract

This invention relates to a smart control and stabilization diversion retaining system and construction method for rapidly consolidating and widening dikes. The dike includes a main body, a riverbed, river water on the dike side, river water on the structural side, and a diversion retaining structure. The diversion retaining structure includes a retaining wall, a widened dike, a drainage device, and a grouting pipe. The retaining wall has a diversion cavity extending to the outside. The widened dike is positioned between the retaining wall and the main dike body. The drainage device includes a drainage pipe and a pump connected to the drainage pipe. One end of the drainage pipe is located in the widened dike, and the other end extends into the diversion cavity. One end of the grouting pipe penetrates the retaining wall and extends into the external space. This invention, through the coordinated operation of the retaining wall, the widened dike, and the drainage device, can effectively handle high-moisture-content fill, achieve rapid drainage, and thus significantly improve dike stability, preventing piping and seepage. This invention has advantages such as simple structure, ease of operation, and ease of promotion, and is of great significance for promoting efficient and safe dike widening construction.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to a smart control stabilization and diversion retaining system and construction method for rapidly consolidating and widening dikes. Background Technology

[0002] With higher requirements for flood control safety in river basins and regions, it is necessary to accelerate the construction of dikes along important sections of major rivers. Upgrading dike projects not only requires reinforcing existing dikes but also often necessitates measures such as raising and thickening them. For levee projects, raising and thickening can be achieved through backfilling and compaction or by constructing retaining walls, but this faces the following challenges: ① When backfilling is used, a large amount of soil is required to meet the backfilling requirements, such as the moisture content of the backfill near the optimum moisture content. When the widening boundary is limited, it can lead to a large widening slope ratio, a steep slope, and unstable soil slopes. ② When constructing retaining walls, they can block the drainage of seepage water from the levee. When the drainage holes are blocked and drainage is not smooth or cannot be drained quickly, the phreatic line inside the levee will rise, the soil will soften, and the stability of the levee will be affected. ③ The soil moisture content near rivers and lakes is usually high. If it can be utilized as a resource in levee widening projects, it will save a lot of construction costs. However, it faces the problem of high soil moisture content.

[0003] Therefore, for the upgrading and construction of dikes, there is an urgent need for a retaining structure and construction method that can handle high water content, rapid drainage, and increase the stability of the dikes. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects existing in the prior art, and to propose a smart control stabilization and diversion retaining system and construction method for rapidly consolidating and widening dikes. Through the cooperation of retaining devices, dike widening and drainage devices, it can properly handle high moisture content fill and achieve rapid drainage, thereby effectively improving the stability of the dike and preventing dangerous situations such as piping and seepage.

[0005] To address the aforementioned technical problems, this invention provides a smart control and stabilization diversion retaining system for rapidly consolidating and widening dikes. The dike includes a main body and a riverbed, comprising:

[0006] A retaining device having a flow-guiding cavity that extends to the outside, the retaining device being installed on the riverbed;

[0007] The embankment is widened and is positioned between the retaining device and the main body of the embankment.

[0008] A drainage device includes a drainage pipe and a pump connected to the drainage pipe. One end of the drainage pipe is disposed in the widened dike, and the other end of the drainage pipe extends into the diversion cavity. When there is pore water in the widened dike, the drainage pipe is used to drain water from the widened dike.

[0009] The grouting pipe has one end extending through the retaining device to the external space, and when the widened embankment is reinforced, the other end of the grouting pipe is connected to the pump.

[0010] In one embodiment of the present invention, the widened embankment includes a coarse sand layer and a fill layer, which are stacked from bottom to top along the height direction of the retaining device.

[0011] In one embodiment of the present invention, the drainage pipe includes a first drainage main pipe and at least one second drainage main pipe. One end of the first drainage main pipe is disposed in the coarse sand layer, and the other end of the first drainage main pipe extends into the flow guiding cavity. One end of the at least one second drainage main pipe is distributed in the fill layer, and the other end of the second drainage main pipe extends into the flow guiding cavity. In the flow guiding cavity, the first drainage main pipe and the second drainage main pipe are connected to corresponding pumps.

[0012] In one embodiment of the present invention, the drain pipe further includes a first drain branch pipe and a second drain branch pipe, wherein the first drain branch pipe intersects with the first drain main pipe and the second drain branch pipe intersects with the second drain main pipe.

[0013] In one embodiment of the present invention, the drainage device further includes an intelligent control platform and a pore water pressure gauge. A pore water pressure gauge is installed on both the first drainage main pipe and the second drainage main pipe. The pore water pressure gauge is used to measure the pore water pressure in the soil. The intelligent control platform is used to collect the readings of the pore water pressure gauge and start and stop the pump according to the readings of the pore water pressure gauge.

[0014] In one embodiment of the present invention, the pump has a forward operating mode and a reverse operating mode. When there is pore water in the widened dike, the forward operating mode of the pump is turned on to drain the widened dike. When the widened dike is reinforced, the reverse operating mode of the pump is turned on to deliver reinforcement fluid to the widened dike.

[0015] In one embodiment of the present invention, an open channel is provided on the side of the retaining device facing away from the riverbed.

[0016] In one embodiment of the present invention, a vacuum membrane is further included, wherein the vacuum membrane is embedded in one end of the fill layer away from the coarse sand layer, and the two ends of the vacuum membrane are respectively connected to the main body of the dike and the retaining device.

[0017] Furthermore, this invention also provides a construction method for a smart control stabilization and diversion retaining system for rapid consolidation and widening of dikes as described above, the method comprising:

[0018] Step S11: Install a retaining device on the riverbed, place the first drainage branch pipe on the riverbed between the retaining device and the main body of the embankment, and install the first drainage main pipe and the pore water pressure gauge, wherein the burial elevation of the pore water pressure gauge is the same as that of the first drainage branch pipe, and the pore water pressure gauge is close to the first drainage branch pipe.

[0019] Step S12: Backfill coarse sand from bottom to top on the riverbed between the retaining device and the main body of the embankment and compact it to form a coarse sand layer, wherein the top height of the coarse sand layer exceeds the elevation of the first drainage branch pipe.

[0020] Step S13: Backfill a set thickness of fill soil on the coarse sand layer to form a fill soil layer, and install at least one second drainage main pipe, a second drainage branch pipe and a pore water pressure gauge. After backfilling the set thickness of fill soil, arrange a vacuum membrane and cover the vacuum membrane with a set thickness of fill soil. The two ends of the vacuum membrane are respectively connected to the main body of the dike and the retaining device.

[0021] Step S14: Turn on the forward operation mode of all pumps to drain the widened dike, so that the vacuum membrane tightens and squeezes the widened dike to drain the water. During the process of draining the widened dike, continuously collect the reading of the pore water pressure gauge on the second drainage main. When the pore water pressure gauge detects the presence of pore water in the fill layer, turn on the forward operation mode of the pump connected to the second drainage main to drain the widened dike until the pore water pressure gauge detects no pore water and the surface settlement of the widened dike is less than the set threshold, then stop the drainage.

[0022] Step S15: Connect the grouting pipe to the corresponding pump and turn on the pump in reverse operation mode. Deliver the reinforcing liquid to the corresponding position of the fill layer through the corresponding second drainage main pipe and second drainage branch pipe. During the drainage and consolidation process of the fill layer, continuously collect the reading of the pore water pressure gauge on the first drainage main pipe. When the pore water pressure gauge detects the presence of pore water in the coarse sand layer, turn on the pump connected to the first drainage main pipe in forward operation mode to drain the widened dike until the pore water pressure gauge detects no pore water.

[0023] In one embodiment of the present invention, in steps S14 and S15, when the pore water pressure gauge detects pore water in the widened dike and the pump cannot pump water due to blockage, the forward operation mode of the pump is turned off and the reverse operation mode of the pump is started to pump air into the corresponding drainage pipe to clear the blockage.

[0024] The technical solution of the present invention has the following advantages over the prior art:

[0025] This invention, through the coordinated use of retaining devices, dike widening, and drainage systems, effectively handles high-moisture-content fill and achieves rapid drainage, thereby significantly improving dike stability and preventing dangerous situations such as piping and seepage. This invention boasts advantages such as simple structure, ease of operation, and easy promotion, and is of great significance for promoting efficient and safe dike widening construction. Attached Figure Description

[0026] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] Figure 1 This is a schematic diagram illustrating the application scenario of the present invention.

[0028] Figure 2 This is a schematic diagram of the diversion and retaining system of the present invention.

[0029] Figure 3 This is a schematic cross-sectional view of the structure of the present invention.

[0030] Figure 4 This is a schematic diagram of the drainage device of the present invention.

[0031] Figure 5 This is a schematic diagram of the upper drainage branch pipe of the present invention.

[0032] Figure 6 This is a flowchart of the method of the present invention.

[0033] Figure 7 This is a schematic diagram illustrating an application example of the present invention.

[0034] Figure 8 This is a dimensional diagram of the diversion and retaining structure used in the application of this invention.

[0035] The reference numerals in the attached drawings are explained as follows: 1. Main body of the dike; 2. Riverbed; 3. River water on the side of the dike; 4. Diversion and retaining structure; 5. River water on the side of the structure; 6. Widening the dike; 41. Retaining device; 42. Anti-erosion structure; 43. Vacuum membrane; 61. Coarse sand layer; 62. Fill layer; 75. Slurry mixing tank; 76. Grouting pipe; 77. Intelligent control platform; 78. Pore water pressure gauge signal cable; 79. Pump signal cable; 411. Diversion cavity; 412. Open channel; 413. Wiring hole; 414. Drainage pipe. Hole; 415, Grouting pipe hole; 711, Upper drainage branch pipe; 712, Middle drainage branch pipe; 713, Bottom drainage branch pipe; 721, Upper drainage main pipe; 722, Middle drainage main pipe; 723, Bottom drainage main pipe; 731, Upper pump; 732, Middle pump; 733, Bottom pump; 741, Upper pore water pressure gauge; 742, Middle pore water pressure gauge; 743, Bottom pore water pressure gauge; 7111, Plastic drainage perforated pipe; 7112, Small hole; 7113, Geotextile. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0037] Please see Figure 1 and Figure 2 As shown, this embodiment provides a smart control and stabilization diversion retaining system for rapid consolidation and widening of dikes. The dike includes a main body 1, a riverbed 2, river water on the dike side 3, river water on the structural side 5, and a diversion retaining structure 4. The diversion retaining structure 4 includes a retaining device 41, a widened dike 6, a drainage device, and a grouting pipe 76. The retaining device 41 has a diversion cavity 411 that extends to the outside and is located on the riverbed 2. The widened dike 6 is arranged between the retaining device 41 and the main body 1. The drainage device includes a drainage pipe and a pump connected to the drainage pipe. One end of the drainage pipe is located in the widened dike 6, and the other end extends into the diversion cavity 411. When there is pore water in the widened dike 6, the drainage pipe drains the water from the widened dike 6. One end of the grouting pipe 76 extends through the retaining device 41 to the external space. When the widened dike 6 is reinforced, the other end of the grouting pipe 76 is connected to the pump.

[0038] This invention, through the coordinated operation of the retaining device 41, the widened dike 6, and the drainage device, can effectively handle high-moisture-content fill and achieve rapid drainage, thereby significantly improving the stability of the dike and preventing dangerous situations such as piping and seepage. This invention has advantages such as simple structure, ease of operation, and easy promotion, and is of great significance for promoting the efficient and safe widening of dikes.

[0039] like Figure 2As shown, the diversion and retaining structure also includes an anti-erosion structure 42 and a vacuum membrane 43. The retaining device 41 is located on the riverbed 2, and the retaining device 41 prevents the river water 5 on the structure side from eroding and widening the embankment 6. The anti-erosion structure 42 is located on the riverbed 2, and prevents the river water 5 on the structure side from eroding the riverbed 2 at the bottom of the retaining device 41. The vacuum membrane 43 is placed at the top of the widened embankment 6, and the two ends of the vacuum membrane 43 are respectively connected to the embankment body 1 and the retaining device 41. The vacuum membrane 43 is a flexible sealing film that is impermeable to water and air.

[0040] The retaining device 41 includes a flow guiding cavity 411, an open channel 412, a wire threading hole 413, a drainage pipe hole 414, and a grouting pipe hole 415. The flow guiding cavity 411 is a hollow structure, which can provide a drainage channel for water discharged from the widened embankment 6 and reduce the weight of the retaining device 41, thereby reducing the construction cost. The open channel 412 is located on the side of the retaining device 411 away from the riverbed 2 and is used to collect and drain water from the surface of the embankment body 1 and the widened embankment 6. The drainage pipe hole 414 and the grouting pipe hole 415 are both through holes connecting the outside and the flow guiding cavity 411. The drainage pipe hole 414 is used to install the drainage pipe, and the grouting pipe hole 415 is used to install the grouting pipe 76.

[0041] like Figure 3 and Figure 4 As shown, the widened embankment 6 includes a coarse sand layer 61 and a fill layer 62. Along the height direction of the retaining device 41, the coarse sand layer 61 and the fill layer 62 are stacked from bottom to top. The coarse sand layer 61 has a large permeability coefficient, which facilitates the collection and discharge of water in the main body of the embankment 1 and the widened embankment 6. The fill layer 62 is backfill soil to be consolidated, and it is backfilled in layers during construction.

[0042] Continuing, the aforementioned drainage pipe includes a first drainage main and at least one second drainage main. One end of the first drainage main is located in the coarse sand layer 61, and the other end extends into the guide cavity 411. One end of at least one second drainage main is located in the fill layer 62, and the other end extends into the guide cavity 411. In the guide cavity 411, both the first and second drainage mains pass through the drainage pipe hole 414 and are connected to the corresponding pumps. Preferably, there can be two second drainage mains, which are spaced apart in the fill layer 62. In conjunction with the first drainage main, the first drainage main (hereinafter referred to as the bottom drainage main 723), one of the second drainage mains (hereinafter referred to as the middle drainage main 722), and the other second drainage main (hereinafter referred to as the upper drainage main 721) are located in the bottom, middle, and upper layers of the widened dike 6, respectively, so that drainage can be carried out on the corresponding layers of the widened dike 6 according to the actual situation.

[0043] In this embodiment, the drainage pipe further includes a first drainage branch pipe, a second drainage branch pipe, an intelligent control platform 77, and a pore water pressure gauge. The first drainage branch pipe intersects with the first drainage main pipe, and the second drainage branch pipe intersects with the second drainage main pipe. A pore water pressure gauge is installed on both the first and second drainage main pipes. The pore water pressure gauge is used to measure the pore water pressure in the soil. The intelligent control platform 77 is used to collect the readings of the pore water pressure gauge and start and stop the pump according to the readings of the pore water pressure gauge. Preferably, there are at least two first drainage branch pipes, distributed on both sides of the first drainage main pipe, which significantly increases the distribution area of ​​the first drainage branch pipes in the coarse sand layer, thereby improving the drainage effect. Similarly, there are at least two second drainage branch pipes, distributed on both sides of the second drainage main pipe. Corresponding to the bottom drainage main pipe 723, the middle drainage main pipe 722, and the upper drainage main pipe 721 mentioned above, in this embodiment, the first drainage branch pipe installed on the bottom drainage main pipe 723 is called the bottom drainage branch pipe 713, and the second drainage branch pipe installed on the middle drainage main pipe 722 is called the middle drainage branch pipe 723. The first drainage branch pipe 712 is installed on the upper drainage main pipe 721. The second drainage branch pipe is called the upper drainage branch pipe 711. Similarly, the pore water pressure gauge installed on the bottom drainage main pipe 723 is called the bottom pore water pressure gauge 743, the pore water pressure gauge installed on the middle drainage main pipe 722 is called the middle pore water pressure gauge 742, and the pore water pressure gauge installed on the upper drainage main pipe 721 is called the upper pore water pressure gauge 741. The pump connected to the bottom drainage main pipe 723 is called the bottom pump 733, the pump connected to the middle drainage main pipe 722 is called the middle pump 732, and the pump connected to the upper drainage main pipe 721 is called the upper pump 731. The above pumps have a forward operation mode and a reverse operation mode. When there is pore water in the widened dike 6, the pump is turned on in the forward operation mode to drain the widened dike 6. When the widened dike 6 is reinforced, the pump is turned on in the reverse operation mode to deliver reinforcement fluid to the widened dike 6.

[0044] This embodiment provides a smart control system for rapidly consolidating and widening dikes, stabilizing, and retaining walls. This system also includes a slurry mixing tank 75, a pore water pressure gauge signal cable 78, and a pump signal cable 79. One end of the grouting pipe 76 passes through a grouting pipe hole 415 and is connected to the slurry mixing tank 75. The other end is connected to the upper pump 731 or the middle pump 732 when needed, to deliver the reinforcing liquid to the corresponding drainage branch pipe and main drainage pipe. Both the pore water pressure gauge signal cable 78 and the pump signal cable 79 pass through a wiring hole 413 and are connected to the smart control platform 77. The intelligent control platform 77 is used to collect the readings of the pore water pressure gauge and start and stop the pump according to the readings. That is, when the pore water pressure gauge detects water pressure, the pump starts in the forward operation mode (positive circulation function) to pump water. When the pore water pressure gauge does not detect water pressure, the pump stops in the forward operation mode. When the pore water pressure gauge detects water pressure, but the pump cannot pump water because the geotextile 7113 is blocked by fine particles, the pump starts in the reverse operation mode (reverse circulation function) to pump air into the blocked drainage pipe to dislodge the fine particles on the geotextile 7113, and then the pump starts in the forward operation mode to pump water. When the reinforcing fluid needs to be pumped, the mixing function of the slurry mixing tank 75 is activated, and the reverse operation mode of the pump is activated at the same time. The reinforcing fluid is pumped into the fill layer 62 through the grouting pipe 76, the second drainage main pipe (referring to the upper drainage main pipe 721 and the middle drainage main pipe 722) and the second drainage branch pipe (referring to the upper drainage branch pipe 711 and the middle drainage branch pipe 712) for consolidation. After the reinforcement pressure is reached, the mixing function of the slurry mixing tank 75 is turned off, and the reverse operation mode of the pump is turned off.

[0045] like Figure 5 As shown, the composition of the drainage branch pipe is illustrated by taking the upper drainage branch pipe 711 as an example. It is made of a plastic drainage flower pipe 7111 with small holes 7112 wrapped with geotextile 7113.

[0046] This invention, through the combination of a diversion and retaining structure, widening of the dike 6, and intelligent control platform 77, can handle fill with high moisture content and quickly drain water from the dike, thereby increasing the stability of the dike.

[0047] Corresponding to the above-mentioned intelligent control stabilization and diversion retaining system for rapid consolidation and widening of dikes, this embodiment of the invention also provides a construction method for the intelligent control stabilization and diversion retaining system for rapid consolidation and widening of dikes, such as... Figure 6 As shown, the method includes the following steps:

[0048] Step S11: Install a retaining device on the riverbed, place the first drainage branch pipe on the riverbed between the retaining device and the main body of the embankment, and install the first drainage main pipe and the pore water pressure gauge, wherein the burial elevation of the pore water pressure gauge is the same as that of the first drainage branch pipe, and the pore water pressure gauge is close to the first drainage branch pipe.

[0049] Step S12: Backfill coarse sand from bottom to top on the riverbed between the retaining device and the main body of the embankment and compact it to form a coarse sand layer, wherein the top height of the coarse sand layer exceeds the elevation of the first drainage branch pipe.

[0050] Step S13: Backfill a set thickness of fill soil on the coarse sand layer to form a fill soil layer, and install at least one second drainage main pipe, a second drainage branch pipe and a pore water pressure gauge. After backfilling the set thickness of fill soil, arrange a vacuum membrane and cover the vacuum membrane with a set thickness of fill soil. The two ends of the vacuum membrane are respectively connected to the main body of the dike and the retaining device.

[0051] Step S14: Turn on the forward operation mode of all pumps to drain the widened dike, so that the vacuum membrane tightens and squeezes the widened dike to drain the water. During the process of draining the widened dike, continuously collect the reading of the pore water pressure gauge on the second drainage main. When the pore water pressure gauge detects the presence of pore water in the fill layer, turn on the forward operation mode of the pump connected to the second drainage main to drain the widened dike until the pore water pressure gauge detects no pore water and the surface settlement of the widened dike is less than the set threshold, then stop the drainage.

[0052] Step S15: Connect the grouting pipe to the corresponding pump and turn on the pump in reverse operation mode. Deliver the reinforcing liquid to the corresponding position of the fill layer through the corresponding second drainage main pipe and second drainage branch pipe. During the drainage and consolidation process of the fill layer, continuously collect the reading of the pore water pressure gauge on the first drainage main pipe. When the pore water pressure gauge detects the presence of pore water in the coarse sand layer, turn on the pump connected to the first drainage main pipe in forward operation mode to drain the widened dike until the pore water pressure gauge detects no pore water.

[0053] This invention, through the coordinated operation of the retaining device 41, the widened dike 6, and the drainage device, can effectively handle high-moisture-content fill and achieve rapid drainage, thereby significantly improving the stability of the dike and preventing dangerous situations such as piping and seepage. This invention has advantages such as simple structure, ease of operation, and easy promotion, and is of great significance for promoting the efficient and safe widening of dikes.

[0054] The following detailed implementation process will illustrate the construction method of the intelligent control stabilization and diversion retaining system for rapid consolidation and widening of dikes proposed in this invention.

[0055] 1. Use engineering measures such as cofferdams to block the river water 5 on the side of the structure, create relatively dry construction conditions for the construction of the diversion retaining structure 4, and level the riverbed 2 at the bottom of the diversion retaining structure 4.

[0056] 2. Prefabricate the diversion retaining structure 4 according to the design plan and install it or pour the diversion retaining structure 4 on site, and install the intelligent control platform 77 on the diversion retaining structure 4.

[0057] 3. Place the bottom drainage branch pipe 713 on the riverbed 2 between the retaining device 41 and the main body of the embankment 1, and install the bottom drainage main pipe 723 and the bottom pore water pressure gauge 743. The bottom pore water pressure gauge 743 is buried at the same elevation as the bottom drainage branch pipe 713, and the bottom pore water pressure gauge 743 is in close contact with the bottom drainage branch pipe 713.

[0058] 4. Backfill the bottom between the diversion retaining structure 4 and the main body of the dike with coarse sand and compact it. The top height of the coarse sand layer 61 should exceed the elevation of the bottom drainage branch pipe 713.

[0059] 5. Backfill a certain thickness of fill layer 62 on the coarse sand layer 61, and arrange the middle layer drainage main pipe 722, the middle layer drainage branch pipe 712 and the middle layer pore water pressure gauge 742; after backfilling a certain thickness of fill layer 62, arrange the upper layer drainage main pipe 721, the upper layer drainage branch pipe 711 and the upper layer pore water pressure gauge 741; after backfilling a certain thickness of fill layer 62, install the vacuum membrane 43, and cover the vacuum membrane 43 with a certain thickness of fill layer 62.

[0060] 6. Utilize the intelligent control platform 77 to continuously collect and monitor the readings of the pore water pressure gauges in the upper, middle, and lower layers. When water pressure is detected, start the pumps in the corresponding layers to drain water. The pump pressure is controlled between 40 kPa and 80 kPa. When the upper layer pore water pressure gauge 741 and the middle layer pore water pressure gauge 742 detect no pore water and the surface settlement of the widened dike 6 is less than 1 mm / d, shut down the upper layer pump 731 and the middle layer pump 732.

[0061] 7. Prepare the reinforcement liquid using the slurry mixing tank 75, connect the grouting pipe 76 to the upper pump 731 and the middle pump 732 in sequence, and turn on the pump in reverse operation mode. Deliver the reinforcement liquid to the corresponding position of the fill layer 62 through the corresponding drainage main pipe and drainage branch pipe. After the reinforcement liquid hardens, it forms a reinforced body in the widened embankment 6, which can further improve the stability of the widened embankment 6.

[0062] 8. The intelligent control platform 77 continuously collects and monitors the readings of the bottom pore water pressure gauge 743. When water pressure is detected, the bottom pump 733 is started to pump water. When there is no pore water, the bottom pump 733 is turned off.

[0063] The following case study illustrates in detail the construction method of the intelligent control stabilization and diversion retaining system for rapid consolidation and widening of dikes proposed in this invention.

[0064] Example: Figure 7As shown, a pumping station project requires the construction of a diversion retaining wall along the existing main embankment 1. The diversion retaining wall is planned to be constructed of concrete. Previous solutions typically involved installing drainage holes in the diversion retaining wall to drain seepage water from the existing main embankment 1, ensuring its stability and safety. However, these drainage holes can become clogged during operation, causing poor drainage. After the pumping station is operational, river water 5 will remain on the structural side, and this water may even seep into the existing main embankment 1 through the drainage holes, severely impacting its stability. Furthermore, the existing main embankment 1 has a top width of 3m, which needs to be widened to 6m according to the upgrading plan. Dredged soil is planned to be used as backfill behind the diversion retaining wall 4, but the current dredged soil has a high moisture content, approximately 40%–60%. Design data shows that the existing riverbed 2 has an elevation of +4.15m, the existing main embankment 1 has a height of approximately 3m, the slope ratio of the existing main embankment 1 on the wing wall side is approximately 1:1, and the slope ratio on the other side is approximately 1:1.5. The diversion and retaining structure 4 of the present invention was used for field testing. The length of the test section (along the embankment direction) was about 5m.

[0065] Step 1: Use engineering measures such as cofferdams to block the river water 5 on the side of the structure, create relatively dry construction conditions for the construction of the diversion retaining structure 4, and level the riverbed 2 at the bottom of the diversion retaining structure 4.

[0066] Step 2: Construct the diversion and retaining structure 4 on-site according to the design plan. See the specifications and dimensions of the diversion and retaining structure 4. Figure 8 And an intelligent control platform 77 is installed on the diversion and retaining structure 4.

[0067] Among them, the anti-scour structure 42 is composed of geotextile tubes filled with dredged soil, with a diameter of 10cm and a length of 2m; the vacuum membrane 43 is a common flexible sealing membrane used for vacuum preloading to treat the foundation, with a width of 3m, a length of 5m, and a width of about 30cm embedded downwards; the hole 413, drainage pipe hole 414, and grouting pipe hole 415 on the retaining device 41 all have a diameter of 3cm, and are located on the middle section of the retaining device 41 in the direction along the embankment.

[0068] Step 3: Place the bottom drainage branch pipe 713 on the riverbed 2 between the retaining structure 41 and the main embankment 1, and install the bottom drainage main pipe 723 and the bottom pore water pressure gauge 743. The bottom pore water pressure gauge 743 is buried at the same elevation as the bottom drainage branch pipe 713, and the bottom pore water pressure gauge 743 is tightly attached to the bottom drainage branch pipe 713. Backfill the bottom between the diversion retaining structure 4 and the main embankment 1 with coarse sand and compact it. The top height of the coarse sand layer 61 should exceed the elevation of the bottom drainage branch pipe 713. In this implementation case, to facilitate water collection, the top height of the coarse sand layer 61 is about 50cm higher than the riverbed 2. The length of the bottom drainage branch pipe 713 on each side is 2m, the outer diameter of the drainage branch pipe is 3cm, and the diameter of the small hole on it is 0.5cm.

[0069] Step 4: Backfill approximately 1m thick dredged soil 62 onto the coarse sand layer 61, and install the middle-layer drainage main pipe 722, middle-layer drainage branch pipe 712, and middle-layer pore water pressure gauge 742; after backfilling approximately 1m thick dredged soil 62 again, install the upper-layer drainage main pipe 721, upper-layer drainage branch pipe 711, and upper-layer pore water pressure gauge 741; after backfilling approximately 40cm thick dredged soil 62 again, install the vacuum membrane 43, and cover the vacuum membrane 43 with approximately 10cm thick dredged soil 62. In this embodiment, the pore water pressure gauge has a range of 0–0.05MPa and an accuracy of 1%, and the outer diameter of the drainage main pipe is 3cm.

[0070] Step 5: Utilize the intelligent control platform 77 to continuously collect and monitor the readings of the pore water pressure gauges in the upper, middle, and lower layers. When water pressure is detected, start the pumps in the corresponding layers to drain water, controlling the pump pressure at 80 kPa. Simultaneously, use a level to monitor the surface settlement of the widened dike 6. After 13 days of pumping, the water output of the upper pump 731, middle pump 732, and lower pump 733 all decreased significantly. The reading of the upper pore water pressure gauge 741 was 1.1 kPa, and the reading of the middle pore water pressure gauge 742 was 1.2 kPa. The lower values ​​indicate that there is less pore water near the pressure gauges. Furthermore, the surface settlement rates of the widened dike 6 for three consecutive days were 0.8 mm / d, 0.6 mm / d, and 0.8 mm / d, all less than 1 mm / d. Therefore, the upper pump 731 and the middle pump 732 were shut down.

[0071] Step Six: Prepare the reinforcing liquid using the slurry mixing tank 75. The reinforcing liquid is selected as cement slurry, and the cement is ordinary Portland cement, grade 42.5R, with a water-cement ratio of 0.45. Connect the grouting pipe 76 sequentially to the upper pump 731 and the middle pump 732, and inject the reinforcing liquid into the corresponding drainage main and drainage branch pipes. After 28 days, the hardened strength of the reinforcing liquid can reach the design strength. The solidified body formed within the widened embankment 6 can further improve the stability of the widened embankment 6.

[0072] The initial setting time of the cement grout is about 1 hour. To ensure the reinforcement effect, the grouting work is required to be completed within 30 minutes after the cement grout is prepared.

[0073] Step 7: Use the intelligent control system 77 to continuously collect and monitor the readings of the bottom pore water pressure gauge 743. When the bottom pore water pressure gauge 743 detects water pressure, start the bottom pump 733 to pump water. When there is no pore water, turn off the bottom pump 733.

[0074] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A smart control and stabilization diversion and retaining system for rapidly consolidating and widening dikes, the dike comprising the dike body and the riverbed, characterized in that: include: A retaining device having a flow-guiding cavity that extends to the outside, the retaining device being installed on the riverbed; The embankment is widened and is positioned between the retaining device and the main body of the embankment. A drainage device includes a drainage pipe and a pump connected to the drainage pipe. One end of the drainage pipe is disposed in the widened dike, and the other end of the drainage pipe extends into the diversion cavity. When there is pore water in the widened dike, the drainage pipe is used to drain water from the widened dike. The grouting pipe has one end extending through the retaining device to the external space, and when the widened embankment is reinforced, the other end of the grouting pipe is connected to the pump. The widened embankment includes a coarse sand layer and a fill layer, which are stacked from bottom to top along the height direction of the retaining device. The drainage pipe includes a first drainage main pipe and at least one second drainage main pipe. One end of the first drainage main pipe is disposed in the coarse sand layer, and the other end of the first drainage main pipe extends into the flow guiding cavity. One end of at least one second drainage main pipe is distributed in the fill layer, and the other end of the second drainage main pipe extends into the flow guiding cavity. In the flow guiding cavity, the first drainage main pipe and the second drainage main pipe are connected to corresponding pumps. The drainage device also includes an intelligent control platform and a pore water pressure gauge. A pore water pressure gauge is installed on both the first drainage main pipe and the second drainage main pipe. The pore water pressure gauge is used to measure the pore water pressure in the soil. The intelligent control platform is used to collect the readings of the pore water pressure gauge and start and stop the pump according to the readings of the pore water pressure gauge. The pump has a forward operating mode and a reverse operating mode. When there is pore water in the widened dike, the pump is turned on in the forward operating mode to drain the water from the widened dike. When the widened dike is being reinforced, the pump is turned on in the reverse operating mode to deliver reinforcement fluid to the widened dike.

2. The intelligent control stabilization and diversion retaining system for rapidly consolidating and widening dikes according to claim 1, characterized in that: The drainage pipe also includes a first drainage branch pipe and a second drainage branch pipe, wherein the first drainage branch pipe intersects with the first drainage main pipe and the second drainage branch pipe intersects with the second drainage main pipe.

3. The intelligent control stabilization and diversion retaining system for rapidly consolidating and widening dikes according to claim 1, characterized in that: An open channel is provided on the side of the retaining device that faces away from the riverbed.

4. The intelligent control stabilization and diversion retaining system for rapidly consolidating and widening dikes according to claim 1, characterized in that: It also includes a vacuum membrane, which is embedded in one end of the fill layer away from the coarse sand layer, and the two ends of the vacuum membrane are respectively connected to the main body of the dike and the retaining device.

5. A construction method for a smart control stabilization and diversion retaining system for rapid consolidation and widening of dikes as described in any one of claims 1-4, characterized in that: The method includes: step S11, installing a retaining device on the riverbed, placing the first drainage branch pipe on the riverbed between the retaining device and the main body of the embankment, and installing the first drainage main pipe and a pore water pressure gauge, wherein the burial elevation of the pore water pressure gauge is the same as that of the first drainage branch pipe, and the pore water pressure gauge is close to the first drainage branch pipe. Step S12: Backfill coarse sand from bottom to top on the riverbed between the retaining device and the main body of the embankment and compact it to form a coarse sand layer, wherein the top height of the coarse sand layer exceeds the elevation of the first drainage branch pipe. Step S13: Backfill a set thickness of fill soil on the coarse sand layer to form a fill soil layer, and install at least one second drainage main pipe, a second drainage branch pipe and a pore water pressure gauge. After backfilling the set thickness of fill soil, arrange a vacuum membrane and cover the vacuum membrane with a set thickness of fill soil. The two ends of the vacuum membrane are respectively connected to the main body of the dike and the retaining device. Step S14: Turn on the forward operation mode of all pumps to drain the widened dike, so that the vacuum membrane tightens and squeezes the widened dike to drain the water. During the process of draining the widened dike, continuously collect the reading of the pore water pressure gauge on the second drainage main. When the pore water pressure gauge detects the presence of pore water in the fill layer, turn on the forward operation mode of the pump connected to the second drainage main to drain the widened dike until the pore water pressure gauge detects no pore water and the surface settlement of the widened dike is less than the set threshold, then stop the drainage. Step S15: Connect the grouting pipe to the corresponding pump and turn on the pump in reverse operation mode. Deliver the reinforcing liquid to the corresponding position of the fill layer through the corresponding second drainage main pipe and second drainage branch pipe. During the drainage and consolidation process of the fill layer, continuously collect the reading of the pore water pressure gauge on the first drainage main pipe. When the pore water pressure gauge detects the presence of pore water in the coarse sand layer, turn on the pump connected to the first drainage main pipe in forward operation mode to drain the widened dike until the pore water pressure gauge detects no pore water.

6. The construction method of a smart control stabilization and diversion retaining system for rapid consolidation and widening of dikes according to claim 5, characterized in that: In steps S14 and S15, when the pore water pressure gauge detects pore water in the widened dike and the pump cannot pump water due to blockage, the forward operation mode of the pump is turned off and the reverse operation mode of the pump is started to pump air into the corresponding drainage pipe to clear the blockage.

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