Slope double-layer groundwater drainage pipe

Abstract

The embodiment of the application provides a kind of side slope double-layer groundwater drain pipe, it is related to drain pipe field.A kind of side slope double-layer groundwater drain pipe, comprising: first inner tube is arranged in the inside of outer protection pipe, and tail cover is arranged at one end of outer protection pipe outer surface, the outer surface of its tail cover one side is provided with rotatable drain pipe, while second inner tube is arranged in the inside of first inner tube, and filter hole is opened in the outer surface of its second inner tube and is distributed at intervals, and rotating plate is arranged above filter hole, and one end of rotating plate is connected with one end of drain pipe, after the above-mentioned outer protection pipe is inserted into the inside of side slope, the increase of jam pressure in the inside of outer protection pipe, and the additional filtration of groundwater jammed can be realized through second inner tube, while jamming, the direction of drain pipe changes in turn and is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drainage pipes, in particular to a double-layer underground water drainage pipe for slope. BACKGROUND

[0002] In mountainous areas, a large number of high slopes are formed due to engineering excavation, and are long-term affected by underground water, etc. The long-term stability and disaster of the high slopes are prominent. The excavation of the slope changes the balance of the original natural slope and the runoff condition of the underground water. A large number of slopes cause an increase in the dynamic water pressure, seepage pressure or fissure water pressure due to the underground water to the excavation free face direction, resulting in slope landslide, collapse or dangerous rock collapse disaster, which seriously affects the safety of buildings, highways, railways and personnel. The conventional underground water drainage measures for the slope include drainage blind ditch, seepage ditch, drilling and embedding an upward inclined drainage pipe, water collecting well for pumping water, underground drainage gallery, etc. Among them, the drilling and embedding of the upward inclined drainage pipe is the most common, and almost all the slopes affected by underground water adopt the upward inclined drainage hole to embed the upward inclined drainage pipe for underground water drainage. In the prior art, when the upward inclined drainage pipe is used for slope underground water drainage, a hole is drilled on the slope surface, and then a drainage pipe is placed in the hole, and the deep underground water in the slope is drained through the drainage pipe. However, after the drainage pipe is used for 1-2 years, the permeable layer or drainage hole of the drainage pipe is blocked by the fine particles in the slope. The maintenance personnel cannot take out the drainage pipe for maintenance and flushing, which reduces the drainage function or even completely blocks the drainage pipe. After the blockage, the drainage pipe cannot be taken out, cleaned or replaced, and thus the underground drainage function is lost, and the structure durability is completely lost, which seriously affects the safety and stability of the slope and causes a large number of slopes to be damaged due to the failure of the underground drainage measures. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a double-layer underground water drainage pipe for slope. After the outer protection pipe is inserted into the slope, the outer protection pipe is blocked by the fine particles in the slope with the underground water, the blocking pressure in the outer protection pipe is increased, and the blocked underground water can be additionally filtered through the second inner pipe.

[0004] According to the double-layer underground water drainage pipe for slope provided by the embodiment of the present application, the outer protection pipe is composed of two sections of threaded pipes,

[0005] The first inner pipe is arranged in the outer protection pipe, a tail cover is arranged at one end of the outer surface of the outer protection pipe, a rotatable drainage pipe is arranged at one side of the outer surface of the tail cover, a second inner pipe is arranged in the first inner pipe, filter holes are arranged at the outer surface of the second inner pipe at intervals, a rotating plate is arranged above the filter holes, and one end of the rotating plate is connected to one end of the drainage pipe.

[0006] Further, the first inner tube is internally provided with a blocking ring at one side of the opening, and a blocking ring is oppositely arranged with the blocking ring, and the second inner tube is connected to one side of the outer surface of the blocking ring, and the blocking ring is internally provided with a second rotating groove.

[0007] Further, the second rotating groove is internally provided with a first rotating ring, and the rotating plate is internally provided with a top plate at one end, and the outer surface of the top plate is covered on one side of the opening of the second inner tube.

[0008] Further, the first inner tube is internally provided with a telescopic rod, the outer surface of the telescopic rod is provided with a spiral groove, and the second rotating ring is sleeved on the outer surface of the telescopic rod, the inner ring wall of the second rotating ring is provided with a clamping block, and the clamping block extends to the recessed part of the spiral groove at one end, and the second rotating ring is connected to the outer surface of the first rotating ring through the second connecting rod and the rotating plate.

[0009] Further, the first inner tube is internally provided with a telescopic rod, the outer surface of the telescopic rod is provided with a spiral groove, and the second rotating ring is sleeved on the outer surface of the telescopic rod, the inner ring wall of the second rotating ring is provided with a clamping block, and the clamping block extends to the recessed part of the spiral groove at one end, and the second rotating ring is connected to the outer surface of the first rotating ring through the second connecting rod and the rotating plate.

[0010] Further, the outer surface of the tail cover is internally provided with a first rotating groove on one side, and the drain pipe is arranged in the first rotating groove, and the first inner tube is arranged in the first rotating groove on one side of the opening, and the drain pipe is provided with a counterweight on the upper side of the outer surface.

[0011] Further, the outer surface of the rotating plate is provided with a third rotating ring at one end, and the third rotating ring is arranged in the drain pipe, and the magnetic block groove is arranged in the bottom of the third rotating ring, and the first magnetic block is arranged in the magnetic block groove.

[0012] Further, the inner ring wall of the drain pipe is internally provided with a clamping groove at the bottom, and the first magnetic block is arranged in the first rotating groove.

[0013] Further, the outer surface of the first inner tube is provided with a positioning hole near the end on both sides, and the push plate is arranged between the rotating plate and the first inner tube, and the push plate is provided with a positioning column corresponding to the positioning hole on both sides of the upper end, and the outer surface of the push plate is provided with a plug-in column.

[0014] Further, the rotating plate is provided with a first protrusion upwardly protruding on the surface, and the second protrusion is downwardly protruding on the inner ring wall of the push plate opposite to the first protrusion.

[0015] The beneficial effects of the present application are: when the outer protection pipe is inserted into the side slope, and the first inner pipe is blocked after long-term use, the underground water can push the baffle as the pressure in the outer protection pipe increases, and the second rotating ring can rotate after the baffle moves through the telescopic rod, the spiral groove and the clamping block, and the rotating plate covering the surface of the filter hole can rotate through the second connecting rod after the second rotating ring rotates, and the underground water entering the second inner pipe can be filtered again and discharged from the drain pipe, and the filter hole can be prevented from being blocked when the second inner pipe is not used through the rotating plate, and the drain pipe can be rotated by the first magnetic block arranged in the magnetic block groove after the rotating plate rotates, and the counterweight block can rotate from the upper end to the lower end under the action of gravity after the first magnetic block rotates, so that the personnel can maintain the key parts more conveniently and intuitively during the later maintenance, and the second protruding block can be lifted upward through the first protruding block after the rotating plate rotates, so that the insertion column can penetrate the hole on the surface of the first inner pipe, and the blockage of the surface of the first inner pipe can be slowed down, and the baffle can pull the cylinder after the baffle moves, and the flap can be turned upward through the push block and the connecting rod after the cylinder moves, so that the diameter of the water inlet opening on one side of the flap can be expanded, and the underground water inlet area can be increased to facilitate the filtration of the underground water.

[0016] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can be obtained by those skilled in the art without creative labor on the premise of not deviating from the concept of the present application.

[0018] Figure 1 is a three-dimensional structure schematic diagram of the whole of a side slope double-layer underground water drain pipe according to an embodiment of the present application;

[0019] Figure 2 is an explosion structure schematic diagram of an outer protection pipe according to an embodiment of the present application;

[0020] Figure 3 is a whole top view structure schematic diagram according to an embodiment of the present application;

[0021] Figure 4 is a A-A section view structure schematic diagram according to an embodiment of the present application; Figure 1 ​

[0022] Figure 5 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application; Figure 2 structure schematic diagram;

[0023] Figure 6 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application; Figure 4 structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0024] Figure 7 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0025] Figure 8 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application; Figure 5 structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0026] Figure 9 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0027] Figure 10 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0028] Figure 11 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0029] Figure 12 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0030] Figure 13 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application;

[0031] Figure 14 is a structure schematic diagram of the extension A-A section according to the embodiment of the present application.

[0032] Figure: 1-outer protection tube; 11-first connecting rod; 12-flap; 13- telescopic groove; 14-large hole filter screen; 15-connecting rod; 2-protection cone; 3-tail cover; 31-drain pipe; 311-counterweight; 32-first rotating groove; 33-second magnetic block; 34-clamping groove; 4-first inner tube; 41-barrier ring; 42-stop ring; 43-second rotating groove; 44-second inner tube; 45-filter hole; 46-positioning hole; 5-telescopic rod; 51-spiral groove; 52-spring; 53-baffle; 54-cylinder; 55-push block; 56-slotted; 6-first rotating ring; 61-rotating plate; 62-first protrusion; 63-second rotating ring; 64-second connecting rod; 65-clamping block; 66-top plate; 67-third rotating ring; 671-magnetic block groove; 672-first magnetic block; 7-push plate; 71-insertion column; 72-positioning column; 73-second protrusion. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0034] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0036] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0039] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" mean to be connected, either fixably or detachably, or to be integrated together, to be connected directly or indirectly through an intermediate medium, or to be the internal communication of two elements or the interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" mean to be connected, either fixably or detachably, or to be integrated together, to be connected directly or indirectly through an intermediate medium, or to be the internal communication of two elements or the interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] A kind of slope double-layer groundwater drainage pipe according to the embodiment of the present application is described below with reference to the drawings.

[0042] As Figures 1-2 As shown, a kind of slope double-layer groundwater drainage pipe according to the embodiment of the present application, including: two end threaded splicing outer protective pipe 1, while outer protective pipe 1 is two ends open hollow structure setting, and is provided with tail cover 3 at one side end of outer protective pipe 1, and the outer surface of tail cover 3 is provided with drainage pipe 31 by being arranged as a shaft along its axis at one end, and first inner tube 4 is arranged in outer protective pipe 1, which can filter the groundwater seeping inside the slope through first inner tube 4, and then can be discharged from drainage pipe 31. With the seepage maintenance of slope, it is necessary to drill a hole at the seepage place, and one end of outer protective pipe 1 is inserted into the hole, so as to achieve the effect of drainage.

[0043] As Figures 3-11 As shown, first rotating groove 32 is provided through one side of the outer surface of tail cover 3, and one end of drainage pipe 31 is arranged in first rotating groove 32, forming a rotatable structure, and one side end opening of first inner tube 4 is arranged concentrically opposite to one end opening of drainage pipe 31. Further, after outer protective pipe 1 is inserted into the inside of slope, the groundwater seeping out of it can be filtered through first inner tube 4, and then discharged through drainage pipe 31.

[0044] Meanwhile the first inner tube 4 is a hollow structure with both ends open, and a blocking ring 41 is arranged inside the opening of the first inner tube 4, and a baffle ring 42 is arranged opposite to the blocking ring 41, and a second inner tube 44 is arranged on one side of the outer surface of the baffle ring 42, and the outer surface of the second inner tube 44 is spaced apart and provided with filter holes 45, and a second rotating groove 43 is arranged inside the baffle ring 42, and a rotatable first rotating ring 6 is arranged inside the second rotating groove 43, and a rotating plate 61 is arranged above the filter holes 45, and a top plate 66 is arranged at one end inside the rotating plate 61, and the outer surface of the top plate 66 is covered at one side of the opening of the second inner tube 44.

[0045] A telescopic rod 5 is arranged coaxially with the second inner tube 44 inside the first inner tube 4, and a spiral groove 51 is arranged on the outer surface of the telescopic rod 5, and a second rotating ring 63 is sleeved on the outer surface of the telescopic rod 5, and a clamping block 65 is arranged on the inner ring wall of the second rotating ring 63, and one end of the clamping block 65 extends to the recessed part of the spiral groove 51, and the second rotating ring 63 is connected to the outer surface of the first rotating ring 6 through the second connecting rod 64 and the rotating plate 61.

[0046] A baffle plate 53 is arranged at the water inlet opening end of the first inner tube 4, and the outer surface of the baffle plate 53 is connected to one side of the end of the telescopic rod 5, and a spring 52 is arranged between the baffle plate 53 and the blocking ring 41. After the outer protection pipe 1 is inserted into the slope, the underground water enters the inside of the outer protection pipe 1, and then the underground water is filtered by the first inner tube 4, and after the first inner tube 4 is used for a long time, the surface of the first inner tube 4 is blocked, and the pressure in the outer protection pipe 1 increases, so that the underground water can push the baffle plate 53, and after the baffle plate 53 moves, the second rotating ring 63 can be rotated by the telescopic rod 5, the spiral groove 51 and the clamping block 65, and the rotating plate 61 covering the surface of the filter holes 45 can be rotated by the second connecting rod 64 after the second rotating ring 63 rotates, and then the underground water entering the second inner tube 44 can be filtered again and discharged from the drain pipe 31, and the filter holes 45 can be prevented from being blocked when the second inner tube 44 is not used by the rotating plate 61.

[0047] As Figure 4 and Figures 7-8As shown, the third rotating ring 67 is arranged at the opposite end of the outer surface of the rotating plate 61, and is located in the inner ring of the drain pipe 31. The counterweight 311 is arranged above the outer surface of the drain pipe 31. The magnetic block groove 671 is arranged upward at the lowest part of the bottom of the third rotating ring 67. The first magnetic block 672 is arranged inside the magnetic block groove 671 and can move in and out of the magnetic block groove 671. The clamping groove 34 is arranged downward at the bottom of the inner ring wall of the drain pipe 31. The second magnetic block 33 is arranged inside the first rotating groove 32 and is repulsive to the first magnetic block 672. Therefore, after the surface of the first inner pipe 4 is blocked after long-term use, the drain pipe 31 can be rotated by the first magnetic block 672 arranged inside the magnetic block groove 671. When the first magnetic block 672 rotates and is repulsive to the second magnetic block 33, the counterweight 311 of the drain pipe 31 can rotate from the upper end to the lower end under the action of gravity. Therefore, when personnel check and maintain later, it is more convenient and intuitive to perform key maintenance.

[0048] As shown, Figure 9 and Figure 11 As shown, the positioning hole 46 is arranged at the two sides of the outer surface of the first inner pipe 4 near the end. The push plate 7 is arranged between the rotating plate 61 and the first inner pipe 4. The positioning column 72 is arranged at the two sides of the upper end of the push plate 7 and corresponds to the positioning hole 46. The plug-in column 71 is arranged on the outer surface of the push plate 7. One end of the plug-in column 71 can be inserted into the hole inside the surface of the first inner pipe 4.

[0049] The first protrusion 62 is arranged upward on the surface of the rotating plate 61. The second protrusion 73 is arranged downward on the inner ring wall of the push plate 7. When the baffle 53 is moved by pressure and the rotating plate 61 rotates, the second protrusion 73 can be lifted upward by the first protrusion 62. The plug-in column 71 can penetrate the hole on the surface of the first inner pipe 4, so that the blockage of the surface of the first inner pipe 4 can be slowed down.

[0050] As shown, Figures 11-14 When the outer protection pipe 1 is inserted into the side slope, the outer protection pipe 1 at one end is easily blocked by the mud inside the hole when being inserted. The first connecting rod 11 is arranged at one end of the outer protection pipe 1. The protection cone head 2 is fixedly arranged at the end of the first connecting rod 11. The flip plate 12 that can be flipped is arranged at the water inlet opening of one side of the outer surface of the outer protection pipe 1. The telescopic groove 13 is arranged inward at one side of the end of the outer protection pipe 1. The large-hole filter screen 14 is arranged on the outer surface of the flip plate 12 and covers the telescopic groove 13.

[0051] And in the baffle 53 outer surface the other side is provided with a cylinder 54, its cylinder 54 one side end fixedly provided with push block 55, and push block 55 outer surface is provided with a sliding slot 56, while in the flap 12 bottom surface to push block 55 surface is provided with connecting rod 15. When the outer protection pipe 1 is inserted, the protection cone head 2 can prevent the mud from blocking the large hole filter screen 14, and after the baffle 53 moves, the baffle 53 pulls the cylinder 54, and after the cylinder 54 moves through the push block 55 and the connecting rod 15, the flap 12 can be turned up, and after the flap 12 is turned over, the water inlet opening diameter on one side of the flap 12 can be expanded, thereby increasing the groundwater inlet area and facilitating the filtration of groundwater.

[0052] Specifically, the working principle of the slope double-layer groundwater drainage pipe is as follows: after the outer protection pipe 1 is inserted into the slope, groundwater enters the inside of the outer protection pipe 1, and then the groundwater is filtered by the first inner pipe 4. After the first inner pipe 4 is used for a long time, the surface of the first inner pipe 4 is blocked, and the pressure in the outer protection pipe 1 increases, so that the baffle 53 is pushed by the groundwater. After the baffle 53 moves, the second rotating ring 63 is rotated through the telescopic rod 5, the spiral groove 51 and the clamping block 65. After the second rotating ring 63 rotates, the rotating plate 61 covering the filter hole 45 is rotated through the second connecting rod 64. Then the groundwater entering the second inner pipe 44 can be filtered again and discharged from the drainage pipe 31. At the same time, the rotating plate 61 can prevent the filter hole 45 from being blocked when the second inner pipe 44 is not in use.

[0053] After the first inner pipe 4 is used for a long time, the surface of the first inner pipe 4 is blocked, and after the rotating plate 61 rotates, the first magnetic block 672 in the magnetic block slot 671 can drive the drainage pipe 31 to rotate. After the first magnetic block 672 rotates, it repels the second magnetic block 33, so that the counterweight 311 of the drainage pipe 31 can rotate from the upper end to the lower end under the action of gravity. Therefore, it is more convenient and intuitive to maintain the key parts during the later maintenance.

[0054] When the baffle 53 is moved by pressure, and the rotating plate 61 rotates, the second protrusion 73 can be lifted up through the first protrusion 62, so that the insertion column 71 can penetrate the hole on the surface of the first inner pipe 4, thereby slowing down the blockage of the surface of the first inner pipe 4.

[0055] When the outer protection pipe 1 is inserted, the protection cone head 2 can prevent the mud from blocking the large hole filter screen 14, and after the baffle 53 moves, the baffle 53 pulls the cylinder 54, and after the cylinder 54 moves through the push block 55 and the connecting rod 15, the flap 12 can be turned up, and after the flap 12 is turned over, the water inlet opening diameter on one side of the flap 12 can be expanded, thereby increasing the groundwater inlet area and facilitating the filtration of groundwater.

[0056] It should be noted that the specific model and specifications of the outer protective tube 1, the first inner tube 4, the second inner tube 44 and the large-hole filter screen 14 need to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0057] The above is only an embodiment of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0058] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A double-layered slope groundwater drainage pipe comprising an outer protection pipe (1) which is formed by screwing two sections together, characterized in that, The utility model provides an outer protection pipe (1) inside first inner tube (4) is provided with the tail cover (3) of outer protection pipe (1) outer surface one end, its tail cover (3) outer surface one side is provided with rotatable drain pipe (31), simultaneously in first inner tube (4) inside second inner tube (44) is provided with, its second inner tube (44) outer surface interval distribution is provided with filter hole (45), and in filter hole (45) top covers rotatory plate (61), and rotatory plate (61) one end is connected with drain pipe (31) one end, and first inner tube (4) one side opening inside is provided with the barrier ring (41), and with barrier ring (41) interval opposite and is provided with the baffle ring (42), and second inner tube (44) one end is connected with baffle ring (42) outer surface one side, and baffle ring (42) inside is provided with second rotary groove (43), and second rotary groove (43) inside is provided with first rotary ring (6), and rotatory plate (61) inside one end is provided with top plate (66), simultaneously top plate (66) outer surface one side is covered in second inner tube (44) one end opening, and first inner tube (4) inside is provided with telescopic link (5), and telescopic link (5) outer surface is provided with spiral groove (51), and in telescopic link (5) outer surface sleeve has second rotary ring (63), its second rotary ring (63) inner ring wall is provided with the clamping block (65), and clamping block (65) one end extends to the recessed place of spiral groove (51), simultaneously second rotary ring (63) and rotatory plate (61) are connected with first rotary ring (6) outer surface through second connecting rod (64), and first inner tube (4) one side water inlet opening end is provided with baffle (53), and baffle (53) outer surface one side is connected with telescopic link (5) one side end, simultaneously between baffle (53) and barrier ring (41) is provided with spring (52). The tail cover (3) outer surface one side is provided with the first rotary groove (32) of through, and the one end of drain pipe (31) is arranged in the first rotary groove (32), and the one end opening of first inner tube (4) is arranged in the first rotary groove (32), and the outer surface of drain pipe (31) is provided with the counterweight (311) on the upper side.

2. The dual-layered slope groundwater drainage pipe according to claim 1, wherein, The outer surface of rotatory plate (61) is provided with the third rotary ring (67) opposite at one end, and the third rotary ring (67) is located in the inner ring of drain pipe (31), and the magnetic block groove (671) is arranged on the bottom of third rotary ring (67) upward, and the first magnetic block (672) is arranged in the magnetic block groove (671).

3. The dual-layered slope groundwater drainage pipe according to claim 2, wherein, The inner ring wall bottom of drain pipe (31) is provided with the clamping groove (34) downward, and the second magnetic block (33) that repels the first magnetic block (672) is arranged in the first rotary groove (32).

4. The dual-layered slope groundwater drainage pipe according to claim 3, wherein, The outer surface of first inner tube (4) is provided with the positioning hole (46) on both sides close to the end, and the push plate (7) is arranged between rotatory plate (61) and first inner tube (4), and the positioning column (72) corresponding to the positioning hole (46) is arranged on both sides of the upper end of push plate (7), and the outer surface of push plate (7) is provided with the plug-in column (71).

5. The dual-layered slope groundwater drainage pipe according to claim 4, wherein, ​ 6. The dual-layered slope groundwater drainage pipe according to claim 5, wherein, The rotating plate (61) is provided with a first protrusion (62) protruding upward, and the inner wall of the push plate (7) is provided with a second protrusion (73) protruding downward.

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