A detachable and washable intelligent drainage and pressure-reducing pine stake and its application

Abstract

This invention discloses a detachable and washable intelligent drainage and pressure-reducing pine pile and its application. The detachable and washable intelligent drainage and pressure-reducing pine pile includes a pile body, a connecting device, and an intelligent monitoring device. The pile body includes a pine pile, an outer pipe, and a filter body. The outer pipe is sleeved on the pine pile, and the filter body is detachably placed in the cavity between the outer pipe and the pine pile. The connecting device includes a connecting box, which is detachably connected to the outer pipe. The intelligent monitoring device includes a water pressure sensor for monitoring water pressure in the filter body, a water level sensor for monitoring water level in the filter body, a vacuum pump for drainage and pressure reduction, and an intelligent monitoring and early warning controller. This invention only requires the filter body to be removed in situ for cleaning or replacement to restore its drainage and pressure-reducing capacity. Combined with the intelligent monitoring device, this invention enables real-time, automated, and digital monitoring of the emergency reinforcement process for preventing piping in earthen dams.

Description

Technical Field

[0001] This invention relates to the field of earth dam and embankment engineering technology, specifically to a detachable and washable intelligent drainage and pressure-reducing pine pile and its application. Background Technology

[0002] During the flood season, river levels are high, and the water level difference between the upstream and downstream slopes of earthen dams and embankments is significant. Small and medium-sized earthen dam and embankment projects are mostly composed of earth and rock materials, which are characterized by being fragmented, three-phase, and porous. Under seepage pressure, these materials are prone to seepage problems, and may even lead to piping, resulting in sudden collapse and instability of the dam, causing serious consequences such as dam failure and breach, and triggering unpredictable socio-economic losses.

[0003] Dam reinforcement and repair work involves controlling seepage in the dam body and foundation. This is achieved through reverse filtration and drainage to reduce the confined water head and seepage pressure within the dam body and foundation, thereby preventing piping. The main tasks can be summarized in three points: first, minimizing leakage; second, releasing seepage pressure early to ensure sufficient static stability of the foundation and hydraulic structures; and third, preventing seepage damage by lowering the erosion line height and ensuring seepage stability. In engineering practice, the following five methods are commonly used:

[0004] 1. Backwater side pressure seepage cover weight

[0005] Sealing caps are widely used in practice due to their simple construction, good dike stability, and low investment. There are many forms of seepage control caps, ranging from impermeable to completely free-draining. In practice, different types are adopted according to specific circumstances to achieve the goal of water permeability without soil permeability. They are generally used in conjunction with drainage ditches, which should be located at the ends of the cap.

[0006] 2. Vertical seepage prevention treatment of foundation

[0007] Vertical seepage prevention is particularly suitable for situations where the permeable layer of the foundation is thin and the impermeable layer is shallow. In this case, a closed seepage prevention curtain wall can be constructed, and the seepage flow and uplift pressure of the embankment foundation can be effectively controlled, thereby achieving the purpose of controlling seepage in the embankment foundation. However, because the wall cuts off the seepage path, the risk mitigation effect is very obvious, but it also disrupts the original natural balance of groundwater to a certain extent, resulting in some adverse water environment consequences.

[0008] 3. Pressure relief well

[0009] Based solely on seepage calculations, pressure-reducing wells demonstrate significant pressure relief, making them a highly effective measure for mitigating piping in most embankment foundations. However, the biggest problem with traditional pressure-reducing wells is that they become clogged to varying degrees over time. This clogging significantly impacts their drainage and pressure-reducing effects, and in severe cases, can lead to complete failure of their drainage and pressure-reducing functions. The formation of clogged pressure-reducing wells is closely related to the location, structure, and materials of the well filter, as well as the quality of the groundwater.

[0010] 4. Landslide removal

[0011] Dike landslides, also known as slope failures, are generally caused by water erosion, internal seepage, or overhead ballast. The principle of landslide emergency repair is "slope reduction and load mitigation, and toe reinforcement with additional weight," aiming to reduce sliding force and increase resistance. For landslides caused by seepage, "front interception and rear guidance" measures must be taken to strengthen seepage prevention and drainage.

[0012] 5. Drainage pine stakes

[0013] A search revealed that Chinese patent document CN105220680A discloses a method for reinforcing soft clay foundations with drainage pine piles and its construction. This method combines pine piles with drainage geotextile, allowing the pine piles to perform both replacement and drainage functions, achieving rapid construction and minimal post-construction settlement in soft soil foundation treatment. However, the drainage pine piles only exert their drainage and pressure-reducing effect when positive pore water pressure is generated in the foundation, making it a passive drainage and pressure-reducing method. Positive pressure loading can increase excess pore water pressure, posing a risk of dam instability and damage during rapid loading. Furthermore, the clogging problem of the drainage structure layer of the drainage pine piles severely affects its drainage and pressure-reducing effect. Chinese patent document CN2405968Y discloses a replaceable drainage and pressure-reducing well, including an external filter well pipe and surrounding backfill sand, with a replaceable filter body installed inside the external filter well pipe. Although replaceable drainage and pressure relief wells can solve the problem of clogging that is common in traditional pressure relief wells, this device does not address the issue of water and sand from highly permeable layers gushing out through the borehole during drilling, which could lead to man-made piping risks. Furthermore, the device requires a large drilling diameter, sophisticated equipment, and a long construction time, making it unsuitable for rapid emergency reinforcement of dams experiencing piping risks during the flood season.

[0014] For earth dam and embankment projects, most of the above construction methods have the disadvantages of complex construction technology, long construction period, and difficulty in continuously exerting drainage and pressure relief function due to siltation of drainage bodies. Their applicability to the rapid piping danger that occurs in embankments during the flood season is questionable. Summary of the Invention

[0015] The purpose of this invention is to provide a detachable and washable intelligent drainage pressure-reducing pine pile and its application, in order to solve the following problems existing in the application of traditional pressure-reducing wells and drainage pine piles in dike engineering: (i) Pressure-reducing wells and drainage pine piles are prone to clogging during long-term operation, resulting in a significant reduction in water output and making it difficult to achieve the drainage and pressure-reducing effect; (ii) Pressure-reducing wells have high requirements for geological conditions, wellhead elevation, spacing and other construction factors, and the construction period is long, making it difficult to meet the needs of emergency construction and rescue when the water level of the dike rises rapidly during the flood season; (iii) After the drainage structure layer of the drainage pine pile is clogged, the pile body must be pulled out and replaced in time. It is not possible to disassemble and wash the pile in situ. Pulling out the old pile and re-driving the new pile will cause artificial disturbance to the soil around the pile, affecting the safety and stability of the dam body and foundation; (iv) Positive pressure loading of drainage pine piles will cause an increase in pore water pressure, and there is a problem of reduced dam stability during rapid loading.

[0016] To solve the above problems, the technical solution adopted by the present invention is as follows: a detachable and washable intelligent drainage pressure-reducing pine wood pile, including a pile body, a connecting device and an intelligent monitoring device. The pile body includes a pine wood pile, an outer pipe and a filter body. The outer pipe is sleeved on the outside of the pine wood pile, and the filter body is detachably placed in the spacer cavity between the outer pipe and the pine wood pile.

[0017] The connecting device includes a connecting box, which is detachably connected to the outer tube;

[0018] The intelligent monitoring device includes a water pressure sensor for monitoring water pressure in the filter body, a water level sensor for monitoring water level in the filter body, a vacuum pump for draining and reducing pressure, and an intelligent monitoring and early warning controller; the water pressure sensor, water level sensor, and vacuum pump are all signal-connected to the intelligent monitoring and early warning controller, and the vacuum pump draining and reducing pressure pipeline system is connected to the connection box through a vacuum filter tube connector.

[0019] In a further preferred embodiment, the connecting device further includes a spring telescopic sleeve, which is disposed inside the connecting box. The top of the pine pile extends into the connecting box and connects with the spring telescopic sleeve. A force transmission column is provided between the top of the connecting box and the spring telescopic sleeve.

[0020] In a further preferred embodiment, the intelligent monitoring device also includes a flow meter and a control valve installed in the drainage pressure reducing pipeline system.

[0021] Preferably, the connecting box is fixedly connected to the outer tube by threads.

[0022] In a further preferred embodiment, the vibratory driver transmits the excitation force to the pile body through a connecting device, thereby driving the pine pile and outer pipe into the soil to a predetermined depth.

[0023] Further preferably, the filter body is composed of, from the inside out, a first filter screen, a first reverse filter geotextile, a porous foam plastic filter body, a plastic core board, a second reverse filter geotextile, and a second filter screen.

[0024] In a further preferred embodiment, the pine pile consists of a cylindrical pile body and an inverted conical pile end, with the lower end of the outer tube fixedly connected to the inverted conical pile end.

[0025] Further preferably, the outer tube has water-permeable holes.

[0026] The present invention also provides the application of the aforementioned detachable and washable intelligent drainage and pressure-reducing pine piles in the emergency reinforcement of dikes to prevent piping.

[0027] This invention also provides a method for emergency reinforcement of piping prevention based on the aforementioned detachable and washable intelligent drainage and pressure-reducing pine piles, characterized by comprising the following steps:

[0028] Step 1: Prepare pine stakes, outer pipes and filter bodies. The outer pipes are provided with water permeable holes. Water pressure sensors and water level sensors are installed on both sides of the pine stakes. The pine stakes and outer pipes are fixedly connected.

[0029] Step 2: Based on the on-site needs for piping prevention and reinforcement, arrange pine pile driving points at intervals of 1-2 meters from the piping outlet to the seepage area on the back slope, and install vacuum pumps and intelligent monitoring and early warning controllers.

[0030] Step 3: Start the vibratory driver, and the impact force will drive the pile into the soil layer in the piping and seepage failure area through the force transmission column;

[0031] Step 4: After the pile is driven to the predetermined depth, connect the drainage and pressure reducing pipe to the connection box and the vacuum pump, check the sealing of the device, confirm that the signals of each sensor are received correctly, and turn on the vacuum pump.

[0032] Step 5: Continuously monitor the drainage and pressure-reducing pine piles during the flood season, and conduct pumping tests to verify the drainage and pressure-reducing effect. If the set warning value is reached, clean and replace the filter body in time.

[0033] This invention combines intelligent drainage and pressure-reducing pine piles with a vacuum system to rapidly reduce water head and seepage pressure, belonging to an active drainage and pressure-reducing technology solution. During the vacuum negative pressure loading process, no additional positive pore water pressure is generated in the dam body and foundation, and there is no problem of dam instability due to rapid loading. It is particularly suitable for rapid emergency reinforcement projects to prevent piping in dams.

[0034] The detachable and washable intelligent drainage and pressure-reducing pine pile proposed in this invention belongs to the category of micropiles. It eliminates the need for complex processes such as pre-drilling with large machinery, allowing for rapid penetration into the dam body and foundation using a micro-vibratory driver, thus achieving rapid emergency reinforcement. Furthermore, this detachable and washable intelligent drainage and pressure-reducing pine pile can intelligently assess and warn based on the degree of clogging in its filter, enabling in-situ cleaning or replacement of the filter to ensure the drainage and pressure-reducing pine pile remains in good drainage and pressure-reducing condition throughout its service life.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. This invention uses a small vibratory driver to drive piles into the ground, which is quick to construct, causes little disturbance to the overburden layer, and is easy, lightweight and flexible to operate. It is suitable for rapid on-site work and can achieve the purpose of quick anti-piping reinforcement.

[0037] 2. The detachable and washable filter body proposed in this invention can effectively prevent soil particle loss, reduce water pressure on the dam soil in a timely manner, and play a role in reverse filtration and drainage. After siltation, it is only necessary to remove and clean or replace the filter body in situ to restore its drainage and pressure reduction capacity, without the need for construction operations such as removing old piles and re-driving new piles.

[0038] 3. This invention can simultaneously achieve the compaction and replacement of the pile body and the drainage and pressure reduction effect of the drainage body, effectively improving the shear strength and bearing capacity of the dam body and foundation soil, reducing the confined water head and seepage pressure, preventing seepage failure, and enhancing the local stability and overall safety of the dam.

[0039] 4. This invention combines an intelligent monitoring system to achieve intelligent monitoring, intelligent control, and intelligent early warning functions. It enables the real-time, automated, and digitalized process of dike reinforcement and reinforcement against piping, quantitatively evaluates the drainage efficiency and siltation degree of the detachable and washable intelligent drainage pressure-reducing pine piles, and provides real-time monitoring and early warning of changes in groundwater in the dam body and foundation, thereby reducing construction, operation, and subsequent maintenance work. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a detachable and washable intelligent drainage and pressure-reducing pine log device in an embodiment of the present invention.

[0041] Figure 2 This is a diagram illustrating the piping and seepage hazards in the dam before and after the construction of the drainage and pressure-reducing pine piles in an embodiment of the present invention.

[0042] Figure 3 This is a schematic diagram of a detachable and washable intelligent drainage and pressure-reducing pine log pile controlling water level in an embodiment of the present invention.

[0043] Figure 4 This is a cross-sectional view of the detachable and washable intelligent drainage and pressure-reducing pine pile body in an embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the arrangement of water-permeable holes on the outer pipe in an embodiment of the present invention.

[0045] In the diagram: 1. Pile body, 2. Connecting device, 3. Intelligent monitoring device, 4. Pine pile, 5. Outer pipe, 6. Filter body, 7. Connecting box, 8. Spring telescopic sleeve, 9. Spacer cavity, 10. Vacuum filter tube connector, 11. High-sensitivity water pressure sensor, 12. Water level sensor, 13. Flow meter, 14. Control valve, 15. Intelligent monitoring and early warning controller, 16. Vacuum pump, 17. Force transmission column, 18. Thread, 19. Cylindrical pile body, 20. Inverted conical pile end, 21. Water-permeable hole, 22. Vibratory hammer. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] like Figures 1-5 As shown, a detachable and washable intelligent drainage pressure-reducing pine stake includes a stake body (1), a connecting device (2), and an intelligent monitoring device (3). The stake body (1) includes a pine stake (4), an outer pipe (5), and a filter body (6). The outer pipe (5) is sleeved on the outside of the pine stake (4), and the filter body (6) is detachably placed in the spacer cavity (9) between the PP outer pipe (5) and the pine stake (4). Figure 1 As shown, the pine pile (4) consists of a cylindrical pile body (19) and an inverted conical pile end (20). The lower end of the outer tube (5) is fixedly connected to the inverted conical pile end (20). It can be connected by adhesive or other connection methods. The outer tube (5) has water-permeable holes (21).

[0048] The connecting device (2) includes a connecting box (7), which is detachably connected to the outer tube (5). In this embodiment, the connecting box (7) is fixedly connected to the outer tube (5) by a thread (18). Of course, other detachable connection methods can also be used, but the connection must be sealed. The connecting device (2) also includes a spring telescopic sleeve (8), which is located inside the connecting box (7). The top of the pine pile (4) extends into the connecting box (7) and connects with the spring telescopic sleeve (8). A force transmission column (17) is set between the top of the connecting box (7) and the spring telescopic sleeve (8). The purpose of setting the spring telescopic sleeve (8) here is to ensure that the force can be effectively transmitted between the connecting box (7) and the top of the pine pile (4), and to prevent gaps in the case of simple rigid contact, or damage caused by excessive screwing of the connecting box (7). The vibratory driver (22) transmits the excitation force to the pile body (1) through the connecting device (2), thereby bringing the pine pile (4) and the outer pipe (5) into the soil layer to the predetermined depth.

[0049] The intelligent monitoring device (3) includes a water pressure sensor (11) for monitoring water pressure in the filter body (6), a water level sensor (12) for monitoring water level in the filter body (6), a vacuum pump (16) for drainage and pressure reduction, and an intelligent monitoring and early warning controller (15). The water pressure sensor (11), the water level sensor (12), and the vacuum pump are all signal-connected to the intelligent monitoring and early warning controller (15). The vacuum pump is connected to the connection box (7) through a vacuum filter tube connector (10). The flow meter (13) and the control valve (14) in the drainage and pressure reduction pipeline system are used to detect water flow and open / close the valve. The vacuum filter tube connector (10) connects the vacuum filter tube and the flow meter (13) of the connection box (7). The intelligent monitoring and early warning controller (15) acquires and analyzes the wireless signals of the water pressure sensor (11), the water level sensor (12), and the flow meter (13). The control valve (14) receives the wireless signal from the intelligent monitoring and early warning controller (15) for control.

[0050] like Figure 4 As shown, the filter body (6) consists of, from the inside out, a first filter screen (6-1), a first reverse filter geotextile (6-2), a porous foam plastic filter body (6-3), a plastic core board (6-4), a second reverse filter geotextile (6-5), and a second filter screen (6-6). The reverse filter geotextile and the porous foam plastic filter body (6-3) form a reverse filter layer. The pore size of the reverse filter geotextile should allow clay particles, fine sand, and microorganisms to penetrate the filter layer. The plastic core board (6-4) is concave and convex, providing a longitudinal drainage channel for transmitting vacuum. The materials are bonded together with water-soluble adhesive. When the filter body is soaked in water for 1 hour, the water-soluble adhesive dissolves, and the porous foam plastic filter body (6-3) expands and rebounds, tightly adhering the reverse filter geotextile to the PP outer pipe (5), thus providing reverse filter protection and support for the weak interlayer. The filter body (6) can be removed and replaced through the filter screen. After drainage, most of the sludge is deposited in the filter body. Simply clean the filter body to restore its drainage and pressure reduction capabilities.

[0051] Specifically, the diameter of the pile body should be the same as that of the spring telescopic sleeve (8). By setting up the connecting device (2), the vacuum degree can be effectively transmitted quickly and the pore water can be discharged quickly. At the same time, the vibration force of the vibratory driver (22) is transmitted to the pile body through the force transmission column (17) and the spring telescopic sleeve (8), and the pile body (1) is vibrated and driven into the back slope of the dam, realizing the rapid construction of the dam emergency reinforcement.

[0052] Among them, the size of the filter body (6) should be smaller than that of the pile body (14) and the outer pipe (5) to ensure that the filter body (6) can be laid down smoothly.

[0053] The outer pipe (5) is a porous plastic round pipe made of rigid PP pipe. The diameter of the round pipe is the same as the outer diameter of the tapered pile end and it is firmly bonded with adhesive. The permeable holes (21) are round holes and are distributed in a plum blossom pattern on the pipe body as needed. By setting the perforated outer pipe (5), the pile body has greater strength and is connected to the external soil, reducing its pressure head and seepage pressure, and improving the stability of the dam.

[0054] The above-mentioned method for emergency reinforcement of detachable and washable intelligent drainage and pressure-reducing pine piles for preventing piping is characterized by the following steps:

[0055] Step 1: Prepare pine wood stakes (4), outer tubes (5) and filter bodies (6). The outer tubes (5) are provided with water-permeable holes (21). Water pressure sensors (11) and water level sensors (12) are installed on both sides of the pine wood stakes (4) at a longitudinal interval of 0.2 meters. The pine wood stakes (4) and the outer tubes (5) are firmly bonded together with adhesive.

[0056] Step 2: Based on the needs of on-site piping prevention and reinforcement, pine pile driving points are arranged at intervals of 1-2 meters from the piping outlet to the seepage area on the back slope, and equipment such as vacuum pump (16) and intelligent monitoring and early warning controller (15) are installed.

[0057] Step 3: After the equipment is prepared, start the vibratory hammer (22). The impact force will push the pile (1) into the soil and rock strata in the seepage failure area through the force transmission column (17).

[0058] Step 4: After the pile (1) is driven into the predetermined depth, the vacuum filter tube connector (10) is connected to the connecting box (7) and the vacuum pump (16). Check the sealing of the device, confirm that the signals of each sensor are received correctly, and turn on the vacuum pump (16).

[0059] Step 5: Continuously monitor the drainage of the pine wood piles during the flood season and conduct pumping tests to verify the decompression effect. If the set warning value is reached, clean and replace the filter body (6) in time. Slowly pull out the filter body (6) using a tripod and pulleys, rinse or replace the filter body (6), and then reinstall the filter body (6) to restore the drainage and decompression capacity of the pine wood piles.

[0060] More specifically, the water pressure sensor (11) and water level sensor (12) are evenly distributed on both sides of the pine pile (4) with a vertical spacing of 0.2 meters. The water pressure sensor (11), water level sensor (12), and flow meter (13) send signals to the intelligent monitoring and early warning controller (15) according to the set data acquisition frequency. The intelligent monitoring and early warning controller (15) summarizes the water pressure signal from the high-sensitivity water pressure sensor (11) and the flow signal from the flow meter (13), and respectively generates water level-water pressure relationship curves and water level-flow relationship curves. These curves are then transmitted wirelessly to the remote monitoring terminal to realize real-time online monitoring and early warning of the operation status of the drainage and pressure-reducing pine pile, quantitatively evaluate the siltation of the drainage and pressure-reducing pine pile, and analyze the change law of the dam seepage line.

[0061] Table 1: Corresponding Warning Levels for Degrees of Stagnation

[0062]

[0063] (Note: Drainage efficiency is derived from the change in drainage flow rate under 90kPa vacuum negative pressure. It is recommended to disassemble, clean or replace the drainage body in time when a level 3 warning occurs.)

[0064] The intelligent monitoring and early warning controller (15) can acquire and analyze the wireless signals of the water pressure sensor (11), water level sensor (12), and flow meter (13) in real time. When the water level in the wetting line reaches the warning water level or the pore water pressure exceeds the piping limit, the intelligent monitoring and early warning controller (15) controls the vacuum automatic control valve (14) to open, thereby achieving the purpose of intelligent control and early warning. When the early warning level reaches level four, staff should be dispatched to the site for inspection immediately.

[0065] Table 2: Corresponding Warning Levels for Water Level and Water Pressure

[0066] Water level (above) Water pressure (piping limit) Warning Level Control valve Safe water level line Less than one close Warning water level line Less than two open Warning water level line Greater than three open Dangerous water level Greater than Four open

[0067] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A detachable and washable intelligent drainage and pressure-reducing pine stake, characterized in that: The device includes a pile body (1), a connecting device (2), and an intelligent monitoring device (3). The pile body (1) includes a pine pile (4), an outer tube (5), and a filter body (6). The outer tube (5) is sleeved on the outside of the pine pile (4), and the filter body (6) is detachably placed in the spacer cavity (9) between the outer tube (5) and the pine pile (4). The filter body (6) consists of, from the inside to the outside, a first filter screen (6-1), a first reverse filter geotextile (6-2), a porous foam plastic filter body (6-3), a plastic core board (6-4), a second reverse filter geotextile (6-5), and a second filter screen (6-6). The connecting device (2) includes a connecting box (7), which is detachably connected to the outer tube (5); The intelligent monitoring device (3) includes a water pressure sensor (11) for monitoring the water pressure in the filter body (6), a water level sensor (12) for monitoring the water level in the filter body (6), a vacuum pump (16) for draining and reducing pressure, and an intelligent monitoring and early warning controller (15); the water pressure sensor (11), the water level sensor (12), and the vacuum pump are all signal-connected to the intelligent monitoring and early warning controller (15), and the vacuum pump is connected to the connection box (7) through the vacuum filter tube connector (10).

2. The detachable and washable intelligent drainage and pressure-reducing pine stake according to claim 1, characterized in that: The connecting device (2) also includes a spring telescopic sleeve (8), which is located inside the connecting box (7). The top of the pine pile (4) extends into the connecting box (7) and connects with the spring telescopic sleeve (8). A force transmission column (17) is provided between the top of the connecting box (7) and the spring telescopic sleeve (8).

3. The detachable and washable intelligent drainage and pressure-reducing pine stake according to claim 1, characterized in that: The intelligent monitoring device (3) includes a flow meter (13) and a control valve (14) installed in the drainage pressure reducing pipeline.

4. The detachable and washable intelligent drainage and pressure-reducing pine stake according to claim 1, characterized in that: The connecting box (7) is fixedly connected to the outer tube (5) by threads (18).

5. The detachable and washable intelligent drainage and pressure-reducing pine stake according to claim 1, characterized in that: The vibratory driver (22) transmits the excitation force to the pile body (1) through the connecting device (2), thereby bringing the pine pile (4) and the outer pipe (5) into the soil layer to the predetermined depth.

6. The detachable and washable intelligent drainage and pressure-reducing pine stake according to claim 1, characterized in that: The pine pile (4) consists of a cylindrical pile body (19) and an inverted conical pile end (20), with the lower end of the outer tube (5) fixedly connected to the inverted conical pile end (20).

7. The detachable and washable intelligent drainage and pressure-reducing pine stake according to claim 1, characterized in that: The outer tube (5) has a water-permeable hole (21).

8. The application of the detachable and washable intelligent drainage and pressure-reducing pine piles according to any one of claims 1-7 in the emergency reinforcement of dikes against piping.

9. A method for emergency reinforcement to prevent piping, characterized in that, The detachable and washable intelligent drainage and pressure-reducing pine stake according to any one of claims 1-7 includes the following steps: Step 1: Prepare pine wood stakes (4), outer tubes (5) and filter bodies (6). The outer tubes (5) are provided with water permeable holes (21). Water pressure sensors (11) and water level sensors (12) are installed on both sides of the pine wood stakes (4). The pine wood stakes (4) and the outer tubes (5) are fixedly connected. Step 2: Based on the needs of on-site piping prevention and reinforcement, arrange pine pile driving points from the piping outlet to the seepage area on the back slope, and install vacuum pumps and intelligent monitoring and early warning controllers (15). Step 3: Start the vibratory hammer (22), and the impact force will push the pile (1) into the soil layer of the piping seepage failure area through the force transmission column (17); Step 4: After the pile (1) is driven into the predetermined depth, the drainage pressure reduction pipeline system is connected to the connection box (7) and the vacuum pump (16) through the vacuum filter pipe joint (10), the device is checked for sealing, and the signals of each sensor are confirmed to be received correctly. The vacuum pump is then turned on. Step 5: Continuously monitor the drainage of the pine wood piles during the flood season and conduct pumping tests to verify the decompression effect. If the set warning value is reached, clean and replace the filter body in time (6).

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