Slope drainage structure and method

Abstract

A slope drainage structure and method, including a slope, a borehole, a drainage trough and a drainage pipe, wherein the slope surface is provided with a drainage trough, a plurality of groups of boreholes are arranged inside the slope, the boreholes are divided into a filling section and a water-permeable hole section, the filling section is filled with a water-absorbing and swelling filler, a magnetic tube is fixedly installed at the bottom end of the water-permeable hole section, and a drainage pipe is arranged inside the borehole. The slope drainage structure adopts a double drainage pipe method, when there is less water in the cavity of the water-permeable hole section, the water is directly discharged through the water inlet of the drainage pipe, when the water content of the entire slope is large, the water-absorbing and swelling filler fully absorbs water and expands, driving the telescopic hose section to extend, and the water inlet of the drainage pipe extends to the magnetic tube docking interface, thereby increasing the diameter of the drainage pipe and increasing the height difference between the drainage port and the water-permeable cavity, thereby increasing the drainage flow rate, and after the water volume is fully drained and reduced, the water-absorbing and swelling filler is restored, and the telescopic hose section is restored under the action of the magnetic force, and the water inlet is separated from the docking interface.

Description

Technical Field

[0001] The present invention relates to the technical field of road engineering, and in particular to a slope drainage structure and method. Background Art

[0002] The rise of groundwater level in the slope caused by rainfall infiltration, which in turn triggers landslides, is also an important factor in the formation and evolution of landslides. The rise of groundwater level in the slope is an accumulation process of rainfall infiltration. Taking continuous and effective drainage measures to timely discharge groundwater infiltrating the slope is of great significance for the control and prevention of landslide disasters.

[0003] The main drainage measures for slopes at present include: surface drainage ditches and blind drainage ditches, water collection wells, horizontal drainage holes, underground drainage holes, etc. Surface drainage measures such as surface drainage ditches and blind drainage ditches have limited drainage capacity and can only drain the slope surface, but cannot drain groundwater that has infiltrated into the slope; water collection wells require power and regular management, consume a lot of energy, and have high cost; horizontal drainage holes are prone to blockage during natural drainage due to their small inclination, affecting the long-term effectiveness of drainage channels; underground drainage holes have a long construction period, complex processes, and high costs. Therefore, there is still a lack of methods for absorbing and draining groundwater from slopes, and exploring new economical and efficient slope drainage technologies is still a top priority. Summary of the invention

[0004] Based on the existing problems in the background technology, the present invention proposes a slope drainage structure and method.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slope drainage structure, comprising a slope, a borehole, a drainage trough and a drainage pipe, the slope surface of the slope is provided with a drainage trough, the interior of the slope is provided with a plurality of groups of boreholes, the boreholes are divided into a filling section and a water-permeable hole section, the interior of the filling section is filled with a water-absorbing and swelling filler, a magnetic tube is fixedly installed at the bottom end of the water-permeable hole section, a drainage pipe is provided inside the borehole, the drainage pipe extends through the drainage trough to the bottom of the slope, the water inlet of the drainage pipe is inserted into the water-permeable hole section, a telescopic hose section is provided near the water inlet of the drainage pipe, two groups of magnetic blocks are fixedly installed near the water inlet of the drainage pipe, a side ditch is provided at the bottom of the slope, and a grass planting pipe is buried at the top of the slope.

[0006] Preferably, the outer side of the drainage pipe section running through the drainage ditch is wrapped with geotextile.

[0007] Preferably, a cylinder is fixedly mounted on one end of the side ditch away from the slope, and a filter residue net is fixedly mounted on the output end of the cylinder.

[0008] Preferably, the opening of the magnetic tube is a trumpet-shaped opening, the top end of the magnetic tube is provided with a docking port for use with the water inlet, and a limiting ring is provided inside the docking port.

[0009] Preferably, the outer wall of the grass planting tube is provided with threads, and the side walls between the threads are evenly provided with through holes penetrating the grass planting tube.

[0010] Preferably, the water inlet of the drain pipe and the docking port of the magnetic pipe are in the same axis, and the diameter of the docking port is slightly larger than the diameter of the water inlet.

[0011] Preferably, a motor and a water pump are fixedly mounted on one side of the side ditch close to the slope through a base, and a water inlet of the water pump is connected to a water outlet of the drainage pipe through a suction pipe.

[0012] A slope drainage method, when there is less water in the cavity of the permeable hole section, the accumulated water in the permeable hole section is directly discharged through the water inlet of the drainage pipe under the action of siphon; when the water content of the entire slope is relatively high, the water-absorbing and swelling filler fully absorbs water and expands, driving the telescopic hose section to extend, and the water inlet of the drainage pipe extends to the magnetic pipe docking interface, so that water enters through the magnetic pipe water inlet. The magnetic pipe water inlet is set in a trumpet shape to increase the water inflow flow, increase the height difference between the cavity and the water outlet, and further accelerate the discharge of the cavity water. When the cavity water is reduced, , the water-swelling filler is gradually restored, and the magnetic tube and the magnetic block repel each other with the same polarity. Under the action of magnetic force, the dehydration and restoration of the water-swelling filler and the restoration of the telescopic hose section are accelerated, and the water inlet of the drainage pipe is separated from the magnetic tube docking interface; when the negative pressure of the water-permeable hole section of the slope is insufficient, or a large number of bubbles are generated in the drainage pipe, siphon drainage cannot be achieved. At this time, the water inlet of the water pump is connected with the water outlet of the drainage pipe through the suction pipe, and the passive pumping of groundwater inside the slope is achieved through the water pump. The water pump can also provide the initial conditions for siphon drainage.

[0013] The beneficial effects of the present invention are:

[0014] 1. The slope drainage structure adopts a double drainage pipe outlet. When there is less water in the cavity of the permeable hole section, the water is directly discharged through the water inlet of the drainage pipe under the action of siphon, and the slope water is discharged to the side ditch through the drainage pipe;

[0015] 2. When the water content of the entire slope is large and the water level is high, the water-absorbing and expanding filler fully absorbs water and expands, squeezing the magnetic block installed on the drainage pipe forward, thereby driving the telescopic hose section to extend, so that the water inlet of the drainage pipe extends to the magnetic pipe docking interface. At this time, water enters through the trumpet-shaped water inlet of the magnetic pipe, thereby increasing the diameter of the drainage pipe and increasing the height difference between the drainage port and the permeable cavity. The water-absorbing and expanding filler expands and squeezes the drainage pipe, exerting pressure on the drainage pipe to increase the drainage flow. After the water volume is fully drained and reduced, the water-absorbing and expanding filler is restored, and the telescopic hose section is restored under the action of the magnetic force, and the water inlet is separated from the docking interface;

[0016] 3. When the negative pressure of the permeable section of the slope is insufficient, or a large number of bubbles are generated in the drainage pipe, and the siphon drainage cannot work effectively, the water pump is connected to the external power device to realize the passive pumping of the groundwater inside the slope. The water pump can also provide the initial conditions for siphon drainage to ensure that the siphon negative pressure drainage can proceed normally;

[0017] 4. A grass planting tube is buried in the upper part of the slope. Grass seeds are grown inside the grass planting tube. The grass and the grass planting tube work together to ensure the stability of the upper part of the slope.

[0018] 5. A cylinder and a filter residue net are installed in the side ditch at the bottom of the slope. The collected garbage can be lifted out through the cylinder and the lifting filter residue net, which is convenient for cleaning the garbage in the side ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of drainage when the water level is high in the present invention;

[0021] Figure 3 This is a schematic diagram of the suction and drainage of the external power device when the present invention is activated during emergency response;

[0022] Figure 4 This is a schematic diagram of the structure of the magnetic tube 7 of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the grass planting tube 10 of the present invention;

[0024] In the figure, 1 is the slope; 2 is the filling section; 3 is the water-swelling filler; 4 is the water-permeable hole section; 5 is the magnetic block; 6 is the drill hole; 7 is the magnetic tube; 8 is the telescopic hose section; 9 is the drainage trough; 10 is the grass-planting tube; 11 is the geotextile; 12 is the drainage pipe; 13 is the ditch; 14 is the cylinder; 15 is the filter screen; 16 is the motor; 17 is the water suction pipe; 18 is the water pump; 19 is the base; 20 is the docking port; 21 is the limit ring; 22 is the through hole; 23 is the thread. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-5The present invention provides a technical solution: a slope drainage structure and method, including a slope 1, a borehole 6, a drainage groove 9 and a drainage pipe 12, characterized in that: the slope surface of the slope 1 is provided with a drainage groove 9, the drainage groove 9 is used to install the drainage pipe 12 of the drainage part, a plurality of groups of boreholes 6 are arranged inside the slope 1, the boreholes 6 are divided into a filling section 2 and a permeable hole section 4, the filling section 2 is filled with a water-absorbing expansion filler 3, groundwater can enter the cavity through the permeable hole section 4, a magnetic tube 7 is fixedly installed at the bottom end of the permeable hole section 4, and the borehole A drainage pipe 12 is arranged inside the drainage groove 9 to extend through the drainage groove 9 to the bottom of the slope 1. The water inlet of the drainage pipe 12 is inserted into the water permeable hole section 4. When the groundwater level inside the slope rises and causes the water level elevation of the drainage pipe 12 to be greater than the water outlet, the groundwater in the water permeable hole section 4 will flow out naturally from the siphon drainage pipe 12 under the action of the water level difference. The siphon effect forms a negative pressure in the cavity of the water permeable hole section 4, and the groundwater inside the slope will accelerate to flow to the cavity of the water permeable hole section 4 and be discharged to the side ditch 13 through the drainage pipe 12. 2 is provided with a telescopic hose section 8 near the water inlet, and two groups of magnetic blocks 5 are fixedly installed near the water inlet of the drain pipe 12. When the water in the cavity of the water-permeable hole section 4 is small, the water is directly discharged through the water inlet of the drain pipe 12. When the water content of the entire slope is large, the water-absorbing and swelling filler 3 fully absorbs water and expands, driving the telescopic hose section 8 to extend, and the water inlet of the drain pipe 12 extends to the interface 20 of the magnetic tube 7, so that water enters through the water inlet of the magnetic tube 7. The water inlet of the magnetic tube 7 is set in a trumpet shape to increase the water inflow and improve the cavity and water outflow. The height difference of the outlet further accelerates the discharge of water in the cavity. When the water in the cavity is reduced, the water-absorbing and expanding filler 3 is gradually restored. At the same time, the magnetic tube 7 and the magnetic block 5 repel each other with the same charge. Under the action of the magnetic force, the dehydration and restoration of the water-absorbing and expanding filler 3 and the restoration of the telescopic hose section 8 are accelerated. The water inlet of the drain pipe 12 is separated from the docking interface 20 of the magnetic tube 7. A ditch 13 is provided at the bottom of the slope 1. The ditch 13 is used to drain rainwater and underground water from the slope 1. A grass planting pipe 10 is buried at the top of the slope 1. The grass planting pipe 10 is used to reinforce the stability of the top of the slope 1.

[0027] In the present invention, the outer side of the drainage pipe 12 section running through the drainage ditch 9 is wrapped with a geotextile 11, and the geotextile 11 can extend the service life of the drainage pipe 12 and prevent corrosion and microbial damage.

[0028] In the present invention, a cylinder 14 is fixedly installed at one end of the ditch 13 away from the slope 1, and a filter residue net 15 is fixedly installed at the output end of the cylinder 14. The filter residue net 15 is used to collect garbage on the slope 1. The cylinder 14 can lift the filter residue net 15 to facilitate the cleaning of the ditch 13.

[0029] In the present invention, the opening of the magnetic tube 7 is a trumpet-shaped opening, and the trumpet shape can increase the water inlet flow rate. The top of the magnetic tube 7 is provided with a docking port 20 used in conjunction with the water inlet, and a limit ring 21 is provided inside the docking port 20. When the water inlet of the drain pipe 12 enters the docking port 20, the limit ring 21 can control the entry length of the drain pipe 12 to prevent the drain pipe 12 from entering too deep and affecting the drainage efficiency.

[0030] In the present invention, the outer wall of the grass planting tube 10 is provided with threads 23, and the side walls between the threads 23 are evenly provided with through holes 22 penetrating the grass planting tube 10. Grass seeds can be placed in the grass planting tube 10 in advance. After the grass seeds develop and grow, they can help reinforce the top stability of the slope 1 together with the grass planting tube 10.

[0031] In the present invention, the water inlet of the drain pipe 12 and the docking port 20 of the magnetic tube 7 are in the same axis, and the diameter of the docking port 20 is slightly larger than the diameter of the water inlet, so that the water inlet of the drain pipe 12 can smoothly enter the docking port 20 of the magnetic tube 7.

[0032] In the present invention, a motor 16 and a water pump 18 are fixedly installed on one side of the ditch 13 close to the slope 1 through a base 19, and the water inlet of the water pump is connected to the water outlet of the drainage pipe 12 through a suction pipe 17, so as to realize the passive discharge of groundwater inside the slope 1.

[0033] Embodiment 1: When there is less water in the cavity of the water-permeable hole section 4 and the negative pressure in the cavity of the water-permeable hole section 4 can meet the initial siphon condition, the accumulated water in the cavity of the water-permeable hole section 4 can be directly discharged to the side ditch 13 through the water inlet of the drainage pipe 12 naturally and actively under the action of siphon.

[0034] Embodiment 2: When the water content of the entire slope 1 is relatively high, the water-swellable filler 3 fully absorbs water and expands, driving the telescopic hose section 8 to extend, and the water inlet of the drainage pipe 12 extends to the docking interface 20 of the magnetic tube 7, thereby entering water through the water inlet of the magnetic tube 7. The water inlet of the magnetic tube 7 is configured to be trumpet-shaped, which increases the water inlet flow rate, increases the height difference between the cavity and the water outlet, and further accelerates the discharge of water accumulated in the cavity. When the water accumulated in the cavity decreases, the water-swellable filler 3 is gradually restored. At the same time, the magnetic tube 7 and the magnetic block 5 repel each other with the same polarity, and the dehydration and restoration of the water-swellable filler 3 and the restoration of the telescopic hose section 8 are accelerated under the action of the magnetic force.

[0035] Embodiment 3: When emergency drainage is required in extreme weather such as continuous heavy rainfall, if the negative pressure of the water-permeable hole section 4 of the slope 1 is insufficient to implement active siphon drainage, or a large number of bubbles are generated in the drainage pipe 12 to hinder siphon drainage, the water inlet of the water pump 18 is connected to the water outlet of the drainage pipe 12 through the suction pipe 17, the motor 16 and the water pump 18 are turned on, and passive pumping of groundwater inside the slope 1 is achieved through the water pump 18. The water pump 12 can also provide an initial negative pressure value for siphon drainage.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slope drainage structure, comprising a slope (1), a borehole (6), a drainage trough (9) and a drainage pipe (12), characterized in that: The slope surface of the slope (1) is provided with a drainage groove (9), and a plurality of groups of drill holes (6) are arranged inside the slope (1). The drill holes (6) are divided into a filling section (2) and a water-permeable hole section (4). The filling section (2) is filled with a water-absorbing and swelling filler (3). A magnetic tube (7) is fixedly installed at the bottom end of the water-permeable hole section (4). A drainage pipe (12) is provided inside the drill hole (6). The drainage pipe (12) extends through the drainage groove (9) to the bottom of the slope (1). The water inlet of the drainage pipe (12) is inserted into the water-permeable hole section (4). A telescopic hose section (8) is provided near the water inlet of the drainage pipe (12). Two groups of magnetic blocks (5) are fixedly installed near the water inlet of the drainage pipe (12). A side ditch (13) is provided at the bottom of the slope (1), and a grass planting pipe (10) is buried at the top of the slope (1); The opening of the magnetic tube (7) is a trumpet-shaped opening, and a docking port (20) for use with a water inlet is provided at the top end of the magnetic tube (7), and a limiting ring (21) is provided inside the docking port (20); A motor (16) and a water pump (18) are fixedly mounted on a side of the side ditch (13) close to the side slope (1) via a base (19); a water inlet of the water pump (18) is connected to a water outlet of the drainage pipe (12) via a water suction pipe (17); When the water in the cavity of the water-permeable hole section (4) is small, the accumulated water in the water-permeable hole section (4) is directly discharged through the water inlet of the drainage pipe (12) under the action of siphon. When the water content of the entire slope (1) is large, the water-absorbing and swelling filler (3) fully absorbs water and expands, driving the telescopic hose section (8) to extend. The water inlet of the drainage pipe (12) extends to the docking interface (20) of the magnetic tube (7), thereby entering water through the water inlet of the magnetic tube (7). The water inlet of the magnetic tube (7) is configured in a trumpet shape to increase the water inflow, increase the height difference between the cavity and the water outlet, and further accelerate the discharge of the accumulated water in the cavity. When the accumulated water in the cavity decreases, the water-absorbing and swelling filler (3) is gradually restored. At the same time, the magnetic tube (7) and the magnetic block (5) repel each other with the same polarity, and the dehydration and restoration of the water-absorbing and swelling filler (3) and the restoration of the telescopic hose section (8) are accelerated under the action of magnetic force, and the water inlet of the drainage pipe (12) is separated from the docking interface (20) of the magnetic tube (7); when the negative pressure of the water-permeable hole section (4) of the slope (1) is insufficient, or a large number of bubbles are generated in the drainage pipe (12), siphon drainage cannot be achieved. At this time, the water inlet of the water pump (18) is connected to the water outlet of the drainage pipe (12) through the water suction pipe (17), and the passive pumping of groundwater inside the slope (1) is achieved through the water pump (18). The water pump (18) can also provide the initial conditions for siphon drainage.

2. A slope drainage structure according to claim 1, characterized in that: The outer side of the pipe section of the drainage pipe (12) that passes through the drainage ditch (9) is wrapped with a geotextile (11).

3. A slope drainage structure according to claim 1, characterized in that: A cylinder (14) is fixedly mounted on the side of the side ditch (13) away from the side slope (1), and a filter residue net (15) is fixedly mounted on the output end of the cylinder (14).

4. A slope drainage structure according to claim 1, characterized in that: The outer wall of the grass planting tube (10) is provided with threads (23), and the side walls between the threads (23) are evenly provided with through holes (22) penetrating the grass planting tube (10).

5. A slope drainage structure according to claim 1, characterized in that: The water inlet of the drainage pipe (12) and the docking port (20) of the magnetic pipe (7) are in the same axis, and the diameter of the docking port (20) is slightly larger than the diameter of the water inlet.

6. A slope drainage structure according to claim 1, characterized in that: A motor (16) and a water pump (18) are fixedly mounted on a base (19) on one side of the side ditch (13) close to the side slope (1), and a water inlet of the water pump (18) is connected to a water outlet of the drainage pipe (12) through a water suction pipe (17).

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