Self-priming siphonic slope drainage system and method

Abstract

The application discloses a self-starting side slope siphon drainage system and method, which adopts the self-starting side slope siphon drainage system to carry out drainage. The self-starting side slope siphon drainage system comprises a siphon pipeline, a water inlet end of the siphon pipeline is arranged in a grouting hole of a side slope, a water outlet end of the siphon pipeline is connected with a water inlet of a water tank through a check valve, a self-starting water inlet device is arranged at the water inlet end of the siphon pipeline, a piston is arranged at an orifice position of the grouting hole, the water outlet end of the siphon pipeline penetrates through the piston, an exhaust pipe is communicated with the siphon pipeline at one end, an exhaust valve is arranged on the exhaust pipe, a drainage pipe is connected with a water outlet of the water tank at one end, and a drainage valve is arranged on a pipeline of the drainage pipe. The self-starting water inlet device comprises an outer-inlet inner-resistance valve, the outer-inlet inner-resistance valve is arranged at the water inlet end of the siphon pipeline, and a filter cover is arranged at the water inlet end of the siphon pipeline and the outer-inlet inner-resistance valve. The self-starting water inlet device can automatically repeat siphon according to a groundwater level.

Description

Technical Field

[0001] This invention belongs to the field of slope drainage, and relates to a self-opening slope siphon drainage system and method. Background Technology

[0002] Landslides pose a significant threat to human life and production, and most landslides are primarily linked to changes in groundwater levels. Therefore, timely drainage of groundwater from slopes and maintaining stable groundwater levels are crucial for preventing and controlling landslides.

[0003] Siphoning is a physical phenomenon that utilizes the force of a difference in liquid level to propel liquid flow. The siphon flow process and velocity are automatically controlled by changes in liquid level, and these physical characteristics have been widely applied in slope drainage. Common siphon activation methods include outlet pumping, outlet reverse pressure pumping, and reverse injection. To fill the siphon pipe with water, a common method is to install pumping equipment at the outlet to activate the siphon, such as using a vacuum pump or high-pressure pump. However, this method is less efficient and incurs higher construction and material costs.

[0004] Furthermore, due to the intermittent, slow-flowing, and high-lift characteristics of slope siphon drainage, air is released during the siphoning process and during prolonged periods of stagnation, accumulating within the siphon pipe. Factors such as siphon pipe quality and construction techniques can cause some siphon pipes to interrupt siphoning due to air accumulation. In such cases, the siphon pipe needs to be restarted to resume siphoning, resulting in low drainage efficiency. Therefore, researching a rapid and efficient method for restarting slope siphon drainage is of great significance for ensuring its normal operation during the rainy season. Summary of the Invention

[0005] The purpose of this invention is to provide a self-opening slope siphon drainage system and method to solve the problem that existing slope siphon drainage systems require external force to achieve repeated siphoning and have low efficiency.

[0006] The technical solution adopted in this embodiment of the invention is: a self-opening slope siphon drainage system, comprising:

[0007] The siphon pipe has its inlet end set inside the grouting hole on the slope, and its outlet end connected to the inlet of the water tank via a check valve.

[0008] The self-starting water inlet device is installed at the water inlet end of the siphon pipe;

[0009] The piston is positioned at the orifice of the grouting hole, and the outlet end of the siphon pipe passes through the piston.

[0010] The exhaust pipe is connected to the siphon pipe at one end and has an exhaust valve installed on it.

[0011] A drain pipe is installed, with one end connected to the outlet of the water tank and a drain valve on the pipe.

[0012] Furthermore, the self-starting water inlet device includes:

[0013] An external inlet valve with internal resistance is installed at the inlet end of the siphon pipe.

[0014] The filter cover is installed on the inlet end of the siphon pipe and the external inlet internal resistance valve.

[0015] Furthermore, the external inlet internal resistance valve includes:

[0016] The rubber ring is installed inside the inlet end of the siphon pipe and is fixedly connected to the inner wall of the siphon pipe.

[0017] The cover plate is positioned above the rubber ring and is rotatably connected to the inner wall of the siphon pipe via a pivot point. The cover plate can rotate along the pivot point inside the water inlet end of the siphon pipe, thereby cooperating with the rubber ring to open / close the water inlet end of the siphon pipe.

[0018] Furthermore, the external inlet internal resistance valve includes:

[0019] The inlet pipe is covered with a filter cover at the inlet end, and the outlet end of the inlet pipe is connected to the inlet end of the siphon pipe. The diameter of the inlet pipe gradually increases from the inlet end to the outlet end.

[0020] The sliding plate is installed inside the water inlet pipe via a mounting bracket. The sliding plate is slidably sleeved on the connecting rod of the mounting bracket, allowing the sliding plate to move vertically along the connecting rod inside the water inlet pipe.

[0021] The diameter of the sliding vane is larger than the inlet diameter of the inlet pipe and smaller than the outlet diameter of the inlet pipe.

[0022] Furthermore, the mounting bracket also includes:

[0023] A cross-shaped fixing bracket is fixedly connected to the top of the connecting rod at its center. The cross-shaped fixing bracket is located inside the rubber ring and is fixedly connected to the inner wall of the siphon pipe.

[0024] The base is fixedly connected to the bottom of the connecting rod.

[0025] Furthermore, the siphon pipe includes:

[0026] The first siphon pipe has its inlet end set inside the grouting hole of the slope, and its outlet end passes through the piston.

[0027] The second siphon tube has its inlet end connected to the outlet end of the first siphon tube via an adapter.

[0028] The exhaust pipe is connected to the water outlet of the first siphon pipe via an adapter.

[0029] Furthermore, the grouting hole includes a steel perforated pipe located inside the borehole, with both ends of the steel perforated pipe forming a sealed grouting section through grouting.

[0030] Furthermore, a water-retaining wall is provided at the ungrouted section in the middle of the steel pipe.

[0031] The technical solution adopted in this embodiment of the invention is a self-reinforcing slope siphon drainage method, which uses the self-reinforcing slope siphon drainage system described above.

[0032] Furthermore, siphon drainage is performed according to the following process:

[0033] Initially, close the drain valve, then open the vent valve, and inject water into the siphon pipe through the vent pipe to expel the air from the siphon pipe. Stop injecting water, then open the drain valve again and close the vent valve. The siphon action will then start, and siphon drainage will begin.

[0034] When the siphon drainage reaches the point where the groundwater level inside the slope is lower than the inlet end of the siphon pipe, the siphon action stops and the self-starting inlet device automatically shuts off. When the groundwater level on the slope rises again and is higher than the inlet end of the siphon pipe, the self-starting inlet device automatically opens, the siphon action starts, and the siphon action is automatically repeated.

[0035] The beneficial effects of the embodiments of the present invention are:

[0036] 1. Only water needs to be injected in reverse from the exhaust pipe during the first start-up to expel the gas in the siphon pipe. Subsequently, it can automatically repeat siphoning according to the groundwater level. Compared with the existing technology, it can start siphon drainage quickly and efficiently. It will not cause air to be released due to the intermittent and slow flow characteristics of the slope siphon drainage process, which will prevent the siphoning function from being interrupted. At the same time, its cost and maintenance costs are low, which solves the problem that the existing slope siphon drainage system requires external force to achieve repeated siphoning and has low efficiency.

[0037] 2. Set the middle section of the steel pipe to be ungrouted, and set a water retaining wall in the ungrouted section to achieve both groundwater siphon drainage and seepage water siphon drainage of the slope soil. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a structural schematic diagram of a self-opening slope siphon drainage system.

[0040] Figure 2 This is a schematic diagram of the main structure of a self-opening water inlet device.

[0041] Figure 3 This is a partial structural diagram of the steel pipe near the lower slope soil.

[0042] In the diagram, 1. First siphon pipe, 2. Second siphon pipe, 3. Grouting hole, 4. Exhaust pipe, 5. Exhaust valve, 6. Drain pipe, 7. Sealed grouting section, 8. Drain valve, 9. Check valve, 10. Water tank, 11. Adapter, 12. Piston, 13. Ungrouted section, 15. Filter cover, 16. Leather ring, 17. Cover plate, 18. Rotation point, 19. Inlet pipe, 20. Sliding vane, 21. Connecting rod, 22. Base, 23. Steel perforated pipe, 24. Water retaining wall. Detailed Implementation

[0043] 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.

[0044] Example 1

[0045] This embodiment provides a self-opening slope siphon drainage system, such as Figure 1 As shown, it includes:

[0046] The siphon pipe has its inlet end set in the grouting hole 3 on the slope, and its outlet end connected to the inlet of the water tank 10 through a check valve 9.

[0047] Exhaust pipe 4, one end of exhaust pipe 4 is connected to siphon pipe, and exhaust valve 5 is installed on exhaust pipe 4;

[0048] Drain pipe 6, one end of which is connected to the outlet of water tank 10, and a drain valve 8 is installed on the drain pipe 6;

[0049] The self-starting water inlet device is installed at the water inlet end of the siphon pipe;

[0050] Piston 12 is located at the opening of grouting hole 3, and the outlet end of siphon pipe passes through piston 12.

[0051] In some embodiments, the self-starting water inlet device includes:

[0052] An external inlet valve with internal resistance is installed at the inlet end of the siphon pipe.

[0053] The filter cover 15 is installed over the inlet end of the siphon pipe and the external inlet internal resistance valve to filter the groundwater and prevent fine sand and impurities from entering and clogging the siphon pipe.

[0054] When the groundwater level on the slope is lower than the inlet of the siphon pipe, the siphon effect stops, and the water originally in the siphon pipe flows back under internal pressure, pushing the external inlet and internal resistance valve to close, preventing air from entering. When the groundwater level rises again above the inlet of the siphon pipe, the air pressure in the sealed environment formed by the grouting hole 3 and the piston 12 increases. Under the action of the air pressure in the grouting hole 3 and the water pressure of the groundwater, the groundwater pushes the external inlet and internal resistance valve to open, and the groundwater enters the siphon pipe, restarting the siphon effect.

[0055] In some embodiments, such as Figure 2 As shown, the external inlet internal resistance valve includes:

[0056] The rubber ring 16 is installed inside the water inlet end of the siphon pipe and is fixedly connected to the inner wall of the siphon pipe.

[0057] Cover plate 17 is disposed above the rubber ring 16 and is rotatably connected to the inner wall of the siphon pipe through the rotation point 18. Cover plate 17 can rotate inside the water inlet end of the siphon pipe along the rotation point 18, thereby cooperating with the rubber ring 16 to open / close the water inlet end of the siphon pipe.

[0058] When the groundwater level on the slope is lower than the inlet of the siphon pipe, the siphon effect stops, the water in the siphon pipe flows back, pushing the cover plate 17 to rotate around the rotation point 18 to close the inlet of the siphon pipe and prevent air from entering the siphon pipe. When the groundwater level rises, groundwater enters the inlet device under pressure and pushes the cover plate 17 to rotate around the rotation point 18 to open, allowing groundwater to enter and the siphon effect is activated.

[0059] In some embodiments, such as Figure 2 As shown, the external inlet internal resistance valve further includes:

[0060] The inlet pipe 19 is covered with a filter cover 15 at the inlet end. The outlet end of the inlet pipe 19 is connected to the inlet end of the siphon pipe. The diameter of the inlet pipe 19 gradually increases from the inlet end to the outlet end.

[0061] The sliding vane 20 is installed inside the inlet pipe 19 via a mounting bracket. The sliding vane 20 is slidably connected to the connecting rod 21 of the mounting bracket, allowing the sliding vane 20 to move vertically within the inlet pipe 19 along the connecting rod 21. The diameter of the sliding vane 20 is larger than the inlet diameter of the inlet pipe 19 and smaller than the outlet diameter of the inlet pipe 19. When the groundwater level rises, it pushes the sliding vane 20 to move into the inlet pipe 19, allowing groundwater to enter the inlet pipe 19. When the groundwater level drops, the water in the inlet pipe 19 flows back outward, pushing the sliding vane 20 towards the filter cover 15. When the sliding vane 20 abuts against the inner wall of the inlet pipe 19, it seals the inlet end of the inlet pipe 19, further preventing air from entering the siphon pipe after the siphon effect stops.

[0062] In some embodiments, the mounting bracket further includes:

[0063] A cross-shaped fixing bracket is fixedly connected to the top of the connecting rod 21 at its center. The cross-shaped fixing bracket is located inside the rubber ring 16 and fixedly connected to the inner wall of the siphon pipe. The cross-shaped fixing bracket is used to support the cover plate 17 and limit the top of the sliding plate 20.

[0064] The base 22 is fixedly connected to the bottom end of the connecting rod 21. The base 22 is used to limit the bottom of the slide plate 20.

[0065] In some embodiments, such as Figure 1 As shown, the siphon pipe includes:

[0066] The first siphon pipe 1 has its inlet end set inside the grouting hole 3 on the slope, and its outlet end passes through the piston 12.

[0067] The second siphon pipe 2 has its inlet end connected to the outlet end of the first siphon pipe 1 via an adapter 11, which facilitates quick maintenance and replacement of the first siphon pipe 1 or the second siphon pipe 2, saving time; the outlet end of the second siphon pipe 2 is connected to the inlet of the water tank 10 via a check valve 9.

[0068] The exhaust pipe 4 is connected to the water outlet of the first siphon pipe 1 via an adapter 11, which can be a three-way pipe.

[0069] In some embodiments, the check valve 9 is an S-type check valve to prevent backflow and to prevent air from entering the second siphon pipe 2 from the water outlet, thereby disrupting the siphon effect.

[0070] In some embodiments, such as Figure 1 and Figure 3 As shown, the grouting hole 3 includes a steel pipe 23 located inside the borehole. The top end of the steel pipe 23 is located at the borehole opening, and the two ends of the steel pipe 23 form a sealed grouting section 7 through grouting.

[0071] In some embodiments, a water-retaining wall 24 is provided at the ungrouted section 13 in the middle of the steel pipe 23. Water in the upper slope soil flows into the grouting hole 3 through the holes in the ungrouted section 13, thus achieving drainage of the upper slope. The water-retaining wall 24 prevents the water collected in the grouting hole 3 from flowing back through the ungrouted section 13 in the middle of the steel pipe 23. The position of the water-retaining wall 24 is determined according to the perennial groundwater level of the slope and is set above the highest perennial groundwater level of the slope.

[0072] In some embodiments, the water-blocking wall 24 is attached to the inner wall of the ungrouted section 13 of the steel pipe 23, and its length is less than the length of the ungrouted section 13 of the steel pipe 23.

[0073] In some embodiments, such as Figure 1 and 3 As shown, an annular mounting cavity is provided in the ungrouted section 13 in the middle of the steel pipe 23, and a water-blocking wall 24 is set in the mounting cavity.

[0074] Example 2

[0075] This embodiment provides a self-reinforcing slope siphon drainage method, which adopts a self-reinforcing slope siphon drainage system provided in Embodiment 1.

[0076] Initially, drain valve 8 needs to be closed, then vent valve 5 opened. Water is injected into the siphon pipe through vent pipe 4 to expel air from the siphon pipe. After this, water injection stops, drain valve 8 is opened again, and vent valve 5 is closed. The siphon action begins, initiating siphon drainage. When the groundwater level inside the slope is lower than the inlet end of the siphon pipe, the siphon action stops. As water is discharged from grouting hole 3, the air pressure in the sealed environment formed by grouting hole 3 and piston 12 decreases. Under the pressure of the water inside the siphon pipe, the self-starting water inlet device automatically closes to prevent air from entering the siphon pipe. When the groundwater level on the slope rises again and exceeds the inlet end of the siphon pipe, the air pressure in the sealed environment formed by grouting hole 3 and piston 12 increases. Under the pressure inside grouting hole 3 and the action of groundwater, the self-starting water inlet device automatically opens, initiating the siphon action and automatically repeating the siphon process.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A self-priming siphonic drainage system for a slope, characterized in that, The utility model relates to a self-starting water inlet device for a water tank, comprising: a siphon pipe, a water inlet end of the siphon pipe is arranged in a grouting hole (3) of a slope, and a water outlet end of the siphon pipe is connected with a water inlet of a water tank (10) through a check valve (9); the grouting hole (3) comprises a steel flower pipe (23) arranged in a borehole, both ends of the steel flower pipe (23) are sealed by grouting to form sealed grouting sections (7), and an ungrouted section (13) of the steel flower pipe (23) is provided with a water retaining wall (24) arranged on an inner wall of the ungrouted section (13) of the steel flower pipe (23), and the length of the water retaining wall (24) is less than that of the ungrouted section (13) of the steel flower pipe (23); the self-starting water inlet device comprises an outer-inlet inner-resistance valve arranged at the water inlet end of the siphon pipe; a filter cover (15) is arranged at the water inlet end of the siphon pipe and the outer-inlet inner-resistance valve; a piston (12) is arranged at a hole opening of the grouting hole (3), and the water outlet end of the siphon pipe penetrates the piston (12); an exhaust pipe (4) is in communication with the siphon pipe, and an exhaust valve (5) is arranged on the exhaust pipe (4); a drain pipe (6) is connected with a water outlet of the water tank (10), and a drain valve (8) is arranged on the drain pipe (6); the outer-inlet inner-resistance valve comprises: a leather ring (16) is arranged inside the water inlet end of the siphon pipe and is fixedly connected with an inner wall of the siphon pipe; a cover plate (17) is arranged above the leather ring (16) and is rotatably connected with the inner wall of the siphon pipe through a rotating point (18), and the cover plate (17) can rotate inside the water inlet end of the siphon pipe along the rotating point (18) to open / close the water inlet end of the siphon pipe in cooperation with the leather ring (16); the outer-inlet inner-resistance valve further comprises: a water inlet pipe (19) is arranged in the filter cover (15), and a water outlet end of the water inlet pipe (19) is connected with the water inlet end of the siphon pipe, and the diameter of the water inlet pipe (19) gradually increases from the water inlet end to the water outlet end; a sliding sheet (20) is arranged in the water inlet pipe (19) through a mounting bracket, and the sliding sheet (20) is slidably arranged on a connecting rod (21) of the mounting bracket, so that the sliding sheet (20) can vertically move in the water inlet pipe (19) along the connecting rod (21); the diameter of the sliding sheet (20) is greater than that of the water inlet end of the water inlet pipe (19) and smaller than that of the water outlet end of the water inlet pipe (19).

2. The self-priming slope siphoning drainage system of claim 1, wherein, the mounting bracket further comprises: a cross-shaped fixing frame is fixedly connected with a top end of the connecting rod (21) at the center, and is arranged in the leather ring (16) and fixedly connected with the inner wall of the siphon pipe; a base (22) is fixedly connected with a bottom end of the connecting rod (21).

3. The self-priming slope siphoning drainage system according to claim 1 or 2, characterized in that, the siphon pipe comprises: a first siphon pipe (1) is arranged in the grouting hole (3) of the slope, and a water outlet end of the first siphon pipe (1) penetrates the piston (12); a second siphon pipe (2) is connected with the water outlet end of the first siphon pipe (1) through an adapter (11). The exhaust pipe (4) is connected with the water outlet end of the first siphon pipe (1) through an adapter (11).

4. A self-priming method for siphonic drainage of a slope, characterized in that, The self-starting slope siphon drainage system as claimed in any one of claims 1-3 is adopted.

5. The self-priming slope siphoning drainage method according to claim 4, wherein, Siphon drainage is carried out according to the following process: At the beginning, the drainage valve (8) is closed, the exhaust valve (5) is opened, water is injected into the siphon pipe through the exhaust pipe (4), the water injection is stopped after the air in the siphon pipe is discharged, the drainage valve (8) is opened, and the exhaust valve (5) is closed, so that the siphon effect is started, and siphon drainage is carried out; When the siphon drainage is to the internal underground water level of the slope and the underground water level is lower than the water inlet end of the siphon pipe, the siphon effect is stopped, and the self-starting water inlet device is automatically closed; when the underground water level of the slope rises again and is higher than the water inlet end of the siphon pipe, the self-starting water inlet device is automatically opened, the siphon effect is started, and automatic repeated siphon is achieved.

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