Energy-saving type dewatering inclined shaft and construction method thereof

Abstract

The invention relates to the technical field of precipitation wells, and discloses an energy-saving type precipitation inclined shaft and a construction method thereof.The energy-saving type precipitation inclined shaft comprises a mounting hole, an inner shaft body, a water filter screen cylinder, an outer shaft body and a filter material, and the inner shaft body, the water filter screen cylinder and the outer shaft body are sequentially arranged in a sleeving mode from inside to outside; the outer well body is alternately provided with attaching parts and protruding parts in the circumferential direction of the outer well body, the attaching parts and the inner well body jointly clamp the water filter screen cylinder, the protruding parts protrude outwards relative to the water filter screen cylinder, the outer diameter of the protruding parts is consistent with the inner diameter of the installation hole, and the outer diameter of the protruding parts is consistent with the inner diameter of the installation hole. Water through holes are formed in the fitting part and the outer well body; and the filter material is filled between the outer wall of the fitting part and the inner wall of the mounting hole. The thickness uniformity of the filter material layer between the inclined shaft and the hole can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of dewatering wells, and in particular to an energy-saving dewatering inclined well and a construction method thereof. Background Art

[0002] In the fields of construction engineering, water conservancy construction, etc., groundwater needs to be controlled, so precipitation wells are used to extract groundwater.

[0003] When installing a precipitation well, a hole is usually dug on the ground first, then the precipitation well is coaxially placed in the hole, and filter material is filled between the outer wall of the precipitation well and the inner wall of the hole, and water holes are arranged in an array on the precipitation well.

[0004] Existing precipitation wells include vertical wells and inclined wells. Compared with vertical wells, it is more difficult to put the inclined well into the excavated hole during installation because the axis of the inclined well extends in an oblique direction. It is easy for the axis of the inclined well to be misaligned with the axis of the excavated hole, resulting in poor uniformity of the thickness of the filter material layer between the outer wall of the well body and the inner wall of the hole, making it easy for groundwater to carry more soil particles through the filter material in the thinner area and enter the inclined well. More soil particles are more likely to cause the water holes to be blocked, thereby affecting the pumping capacity of the inclined well. Summary of the invention

[0005] In order to improve the uniformity of the thickness of the filter material layer between the inclined well and the holes, the present application provides an energy-saving precipitation inclined well and a construction method thereof.

[0006] In the first aspect, the present application provides an energy-saving dewatering inclined well, which adopts the following technical solution: An energy-saving precipitation inclined well comprises: an installation hole, an inner well body, a water filter net cylinder, an outer well body and filter material, wherein the inner well body, the water filter net cylinder and the outer well body are sequentially arranged from the inside to the outside; the outer well body is alternately provided with fitting parts and protruding parts along its circumference, the fitting parts and the inner well body jointly clamp the water filter net cylinder, the protruding parts protrude outwardly relative to the water filter net cylinder, the outer diameter of the protruding parts is consistent with the inner diameter of the installation hole, and water holes are opened on the fitting parts and the outer well body; the filter material is filled between the outer wall of the fitting part and the inner wall of the installation hole.

[0007] By adopting the above technical scheme, the water filter net cylinder is clamped by the structure of the inner well body, the water filter net cylinder and the outer well body being arranged from the inside to the outside in sequence, and the fitting part and the protruding part arranged on the outer well body, and at the same time, the protruding part is fitted with the inner wall of the installation hole, which is beneficial to the guidance of the inclined well during the installation process, reduces the misalignment of the axis, and improves the uniformity of the thickness of the filter material layer.

[0008] Optionally, the dewatering inclined shaft also includes a filling frame, which is detachably connected between two adjacent protrusions, and the filling frame has an outer circumference with an outer diameter consistent with the inner diameter of the installation hole, and is used to connect the outer circumference of two adjacent protrusions.

[0009] By adopting the above technical solution, when the filling frame is installed between two adjacent protrusions, when the outer well body is lowered into the installation hole, the outer periphery of the filling frame can be abutted against the inner wall of the installation hole, thereby improving the stability of the outer well body when it is lowered into the installation hole.

[0010] Optionally, the filling frame includes a plurality of sub-frames, and the sub-frames are detachably spliced ​​in sequence along the axial direction of the inner well body.

[0011] By adopting the above technical solution, the sub-frames can be disassembled and spliced ​​in sequence along the axial direction of the inner well body, making the installation and disassembly of the filling frame more flexible and convenient, and adapting to the needs of dewatering inclined wells of different lengths.

[0012] Optionally, the sub-frame located at the bottom of the filling frame has a bottom plate, and a plurality of discharge holes for the filter material to pass through are arranged in an array on the bottom plate.

[0013] By adopting the above technical solution, the filter material can be poured onto the feeding holes through the array during the process of moving the outer well body out of the filling rack, and the filter material enters the installation hole through the feeding holes, thereby improving the uniformity of the filter material.

[0014] Optionally, the dewatering inclined well also includes a submersible pump lowered into the inner well body, and the submersible pump is used to pump out the accumulated water in the inner well body.

[0015] Optionally, the water filter screen is rotatably connected to the inner well body.

[0016] By adopting the above technical solution, the part of the water filter cylinder relative to the water hole can be changed by rotating the water filter cylinder, so that the blocked part of the water filter cylinder can be turned away from the water hole, thereby improving the water flow efficiency of the water filter cylinder.

[0017] Optionally, the bottom of the inner well body has a first sealing plate, the inner wall of the inner well body has a plurality of enclosure frames fixed on the first sealing plate, the enclosure frames, the inner wall of the inner well body and the first sealing plate together enclose a flushing cavity with an opening facing upward; the number and positions of the enclosure frames correspond one-to-one to the protruding portions, and the first sealing plate is provided with a water hole except for a portion other than the flushing cavity; The bottom of the outer well body has a second sealing plate for closing the outer well body, the second sealing plate is located below the first sealing plate and is connected to the first sealing plate through a connecting rod; a water storage chamber is formed between the inner wall of the protrusion and the water filter net cylinder, the water storage chamber and the flushing chamber are connected to the water filter net cylinder through the water through hole, and the water storage chamber is also connected to the inner cavity of the inner well body through the water through hole.

[0018] By adopting the above technical solution, the submersible pump can provide suction to the flushing chamber to flow toward the water storage chamber when absorbing water, thereby backwashing the water filter net cylinder between the flushing chamber and the water storage chamber to reduce blockage of the water filter net cylinder.

[0019] Optionally, a positioning member for positioning the water filter net cylinder is provided between the water filter net cylinder and the inner well body, and the positioning member includes a clamping rod hinged to the top of the water filter net cylinder, and the top of the inner well body is provided with a plurality of clamping grooves for the clamping rod to rotatably engage along its circumferential intervals.

[0020] By adopting the above technical solution, the clamping rod is clamped into the clamping groove to limit the water filter net cylinder from rotating relative to the inner well body, thereby improving the stability of the water filter net cylinder.

[0021] Optionally, the dewatering inclined well further comprises a protective net overlapped on the top of the inner well body, and the edge of the protective net has an extension portion that is snapped into the snap-in groove.

[0022] In the second aspect, the present application provides a construction method of an energy-saving dewatering inclined well. A construction method of an energy-saving dewatering inclined shaft comprises the following steps: S1, excavation of installation holes; S2, lowering the assembled inner well body, the water filter net cylinder and the outer well body into the installation hole, wherein the outer wall of the protruding part abuts against the inner wall of the installation hole for guidance during the lowering process; S3, filling the filter material between the outer wall of the fitting part and the installation hole.

[0023] In summary, the present application includes at least one of the following beneficial effects: 1. When the assembled outer well body, water filter net cylinder and inner well body are placed in the installation hole, the outer periphery of the protruding part and the outer periphery of the filling frame can abut against the outer wall of the installation hole, thereby guiding the lowering of the well body. After that, the filling frame is taken out and removed, and the outer well body is supported by the protruding part, so that the thickness of the outer well body from the fitting part along its own circumference to the inner wall of the installation hole is consistent, thereby making the filter material uniform in thickness when it is filled between the fitting part and the installation hole; 2. Through the relative arrangement of the flushing chamber and the water storage chamber, the submersible pump can simultaneously backwash the water filter screen while pumping water from the inner well body, so as to improve the water intake efficiency of the water filter inclined well. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a top view of the dewatering inclined well along its own axis in the embodiment of the present application; Figure 2 is a cross-sectional view of a dewatering inclined well according to an embodiment of the present application; Figure 3 It is a structural schematic diagram of a dewatering inclined well according to an embodiment of the present application; Figure 4 It is a schematic diagram of the explosion structure of the well body and the protection net in the embodiment of the present application; Figure 5 It is a structural schematic diagram of a dewatering inclined well with a filling frame according to an embodiment of the present application; Figure 6 It is a schematic diagram of the explosion structure between the two bottom sub-racks in the filling rack of the embodiment of the present application.

[0025] Explanation of the accompanying drawings: 1. Installation hole; 2. Inner well body; 3. Water filter net cylinder; 4. Outer well body; 5. Filter material; 6. Fitting part; 7. Protrusion; 8. Water hole; 9. Filling frame; 91. Sub-frame; 10. Chassis; 11. Feeding hole; 12. First sealing plate; 13. Enclosing frame; 14. Flushing chamber; 15. Water hole; 16. Second sealing plate; 17. Connecting rod; 18. Water storage chamber; 19. Positioning piece; 191. Snap-in rod; 20. Snap-in groove; 21. Protective net; 22. Extension part; 23. Plug socket. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-6 This application is described in further detail.

[0027] The present application embodiment discloses an energy-saving dewatering inclined well. Figure 1 The energy-saving dewatering inclined well includes an installation hole 1, an inner well body 2, a water filter net cylinder 3, an outer well body 4, filter material 5 and a submersible pump. The installation hole 1 is excavated obliquely relative to the ground, and the inner well body 2, the water filter net cylinder 3 and the outer well body 4 are sequentially installed from the inside to the outside and then placed in the installation hole 1 and coaxial with the installation hole 1. The filter material 5 is filled between the outer wall of the outer well body 4 and the inner wall of the installation hole 1. The submersible pump (not shown in the figure) is placed in the inner well body 2 to pump out the accumulated water in the inner well body 2.

[0028] Reference Figure 1 and Figure 2 , wherein the inner well body 2 is cylindrical and has a first sealing plate 12 fixed at the bottom, the top of the inner well body 2 is connected to the outside, and a protective net 21 is detachably installed on the top of the inner well body 2 to protect the top of the inner well body 2. The water filter net cylinder 3 is made of a corrosion-resistant metal net and is cylindrical with both ends penetrating. The water filter net cylinder 3 is coaxially sleeved on the outer wall of the inner well body 2 and coaxially rotated on the outer wall of the inner well body 2. For the convenience of display, the holes of the water filter net cylinder 3 are not shown in the attached figure.

[0029] Reference Figure 2 and Figure 3 The outer well body 4 is cylindrical and has a second sealing plate 16 fixed at the bottom. The second sealing plate 16 is located directly below the first sealing plate 12. The second sealing plate 16 and the first sealing plate 12 are fixed by a connecting rod 17 to fix the inner well body 2 and the outer well body 4 to each other. The outer well body 4 and the inner well body 2 are opposite to each other. The cylindrical body alternately forms a fitting part 6 and a protruding part 7 along the circumference of the inner well body 2. The fitting part 6 is in an arc shape with an inner diameter consistent with the outer diameter of the water filter net cylinder 3, and the fitting part 6 is coaxially fitted to the outer wall of the water filter net cylinder 3. The protrusion 7 protrudes outward relative to the fitting portion 6, and the cross-section of the protrusion 7 is a U-shaped structure with an opening toward the water filter net cylinder 3. The inner wall of the protrusion 7 and the outer wall of the water filter net cylinder 3 enclose a water storage chamber 18, and the side of the protrusion 7 opposite to the outer wall of the water filter net cylinder 3 is in an arc shape with an outer diameter consistent with the inner diameter of the installation hole 1, so that the outer wall of the protrusion 7 of the outer well body 4 located in the installation hole 1 fits into the inner wall of the installation hole 1.

[0030] Reference Figure 1 and Figure 2 Thus, when the assembled inner well body 2 and outer well body 4 are lowered into the installation hole 1, the lowering of the well body is guided by the contact between the protrusion 7 and the installation hole 1, and the thickness between the outer wall of each fitting part 6 and the inner wall of the installation hole 1 is made consistent, and the filter material 5 is filled between the outer wall of the fitting part 6 and the inner wall of the installation hole 1. It should be noted that the shape and size of the second sealing plate 16 are consistent with the shape enclosed by the protrusion 7 and the edge of the fitting part 6 along the outer periphery of the outer well body 4, and the second sealing plate 16 closes the bottom of the outer well body 4.

[0031] In order to allow groundwater in the soil layer to enter the inner well body 2 for collection after passing through the filter material 5, water holes 8 are arranged in an array on the fitting part 6 and the well wall of the inner well body 2, and the water holes 8 of the fitting part 6 are connected to the water holes 8 of the inner well body 2. The size of the water holes 8 is smaller than the gap between the filter materials 5 and larger than the pores of the water filter net cylinder 3. The water flow after passing through the filter material 5 enters the inner well body 2 through the water holes 8 and the water filter net cylinder 3 for collection.

[0032] Reference Figure 2 and Figure 4 Further, in some embodiments, enclosure frames 13 are evenly spaced and fixed on the inner wall of the inner well body 2, and the positions and numbers of the enclosure frames 13 correspond to the protrusions 7 one by one. The enclosure frame 13 is a U-shaped structure with its opening facing the inner wall of the inner well body 2, and the bottom of the enclosure frame 13 is fixed on the first sealing plate 12, and the top of the enclosure frame 13 is close to the top of the inner well body 2, so that a flushing cavity 14 is formed between the inner wall of the inner well body 2 and the enclosure frame 13. Since the enclosure frame 13 is opposite to the protrusion 7, the flushing cavity 14 is connected to the water storage cavity 18 through the water holes 8 on the inner well body 2 and the water filter net cylinder 3.

[0033] What's more, the first sealing plate 12 is provided with water holes 15 in an array except for the part opposite to the flushing chamber 14. The size of the water holes 15 is larger than the size of the water holes 8. The inner well body 2 and the water storage chamber 18 are connected by the water holes 15. When the submersible pump is pumping water, it can provide suction force to the water flow in the water storage chamber 18, and then provide suction force to the water flow in the flushing chamber 14 to flow to the water storage chamber 18, so that when the submersible pump is pumping water, the flushing chamber 14 can backwash the water filter net cylinder 3, so that the water filter net cylinder 3 can maintain good water permeability, so as to improve the energy saving effect of the inclined well. The water in the flushing chamber 14 enters the flushing chamber 14 from the water flow in the inner well body 2 through the water storage chamber 18 and the filter net cylinder, and can also be replenished by the staff.

[0034] Since the water filter net cylinder 3 can rotate relative to the inner well body 2 and the outer well body 4, the water filter net cylinder 3 is rotated at regular intervals to change the position of the water filter net cylinder 3 relative to the protrusion 7, so as to realize the cleaning of various parts of the water filter net cylinder 3, thereby improving the water filtering efficiency of the water filter net cylinder 3. At the same time, when the position of the water filter net cylinder 3 is rotated, the part of the water filter net cylinder 3 that was not opposite to the water through hole 8 can be moved to the position opposite to the water through hole 8, further improving the water filtering effect and service life of the water filter net cylinder 3.

[0035] Reference Figure 1 and Figure 4 In order to improve the stability of the water filter net cylinder 3, a positioning member 19 is provided between the water filter net cylinder 3 and the inner well body 2 for positioning the water filter net cylinder 3. Specifically, the positioning member 19 includes a clamping rod 191, one end of which is hinged to the top of the water filter net cylinder 3 through a pin shaft, and a plurality of clamping grooves 20 are evenly spaced along the circumference of the top of the inner well body 2. When the water filter net cylinder 3 rotates to the clamping rod 191 and the clamping groove 20, the clamping rod 191 rotates downward to be clamped into the clamping groove 20, thereby limiting the water filter net cylinder 3 from continuing to rotate. By clamping the clamping rod 191 into different clamping grooves 20, the position of the water filter net cylinder 3 can be changed.

[0036] Furthermore, the edge of the protective net 21 has a plurality of extension portions 22 extending outward at circumferential intervals. When the protective net 21 is coaxially covered onto the inner well body 2, the plurality of extension portions 22 can be respectively inserted into each clamping groove 20 to limit the position of the protective net 21. At the same time, the clamping rod 191 in the clamping groove 20 is pressed by the extension portion 22 to improve the stability of the clamping rod 191 when it is inserted into the clamping groove 20.

[0037] Reference Figure 5 and Figure 6Furthermore, in some embodiments, the dewatering inclined well further includes a filling frame 9, which corresponds to the fitting portion 6 one by one, and is detachably connected between two adjacent protrusions 7 and abuts against the corresponding fitting portion 6. Specifically, the filling frame 9 includes a sub-frame 91 and a chassis 10, and the sub-frame 91 has a plurality of sub-frames and is sequentially spliced ​​along the height direction of the well body, and the sub-frame 91 is a U-shaped structure with an opening facing the water filter net cylinder 3, and the outer diameter of the side of the sub-frame 91 opposite to the water filter net cylinder 3 is consistent with the outer diameter of the protrusion 7, and the chassis 10 is fixed to the bottom end of the sub-frame 91 located at the bottom end of the same filling frame 9.

[0038] When the filling frame 9 is installed, the sub-frame 91 is inserted and fitted between two adjacent protrusions 7 to fill the gap between the two adjacent protrusions 7, so that the outer well body 4 is cylindrical, so as to further guide the process of placing the outer well body 4 into the installation hole 1.

[0039] Among them, except for the sub-frame 91 located at the bottom, the bottom ends of the other sub-frames 91 are fixed with a socket 23, and the tops of all sub-frames 91 are provided with a socket slot for inserting the socket 23. After the socket 23 is inserted into the socket slot, the sub-frame 91 located below is penetrated by a countersunk bolt and threadedly connected to the socket 23, that is, the upper and lower adjacent sub-frames 91 can be connected.

[0040] In order to facilitate the removal of the filling frame 9 from the outer well body 4, the filling frame 9 is connected to the adjacent protrusion 7 through the topmost sub-frame 91 by bolts. When the filling frame 9 needs to be removed, the bolts and nuts between the sub-frame 91 and the protrusion 7 are removed to take the filling frame 9 upward. When the filling frame 9 moves up to the top sub-frame 91 and is completely removed, the connection between the sub-frame 91 and the lower sub-frame 91 is removed to reduce the space required for the filling frame 9 to move up and improve the convenience of disassembly and assembly of the filling frame 9. After the filling frame 9 is removed, it can be reused in the next inclined well when it is installed in the next inclined well, so as to save the amount of the filling frame 9.

[0041] Reference Figure 5 and Figure 6 In addition, the bottom plate 10 is provided with feeding holes 11 for the filter material 5 to pass through. When the filling frame 9 is moved upward, the filter material 5 can be poured into the filling frame 9 at the same time, so that the filter material 5 can be evenly dropped into the installation hole 1 through the feeding holes 11. In addition, during the upward movement of the filling frame 9, the filling frame 9 can be reciprocated upward and downward for multiple times at intervals, so that the filling frame 9 can press the filter material 5 downward through the bottom plate to improve the compactness of the filter material 5.

[0042] The implementation principle of an energy-saving dewatering inclined well in the embodiment of the present application is as follows: the dewatering inclined well is supported in the installation hole 1 by the protrusion 7 being fitted with the inner wall of the installation hole 1, and the filter material 5 distributed along the circumference of the outer well body 4 is isolated between each two adjacent protrusions 7. The groundwater in the soil layer enters the inner well body 2 through the filter material 5, the fitting part 6, the water filter net cylinder 3 and the inner well body 2 in sequence, and the water in the inner well body 2 overflows into the water storage chamber 18 and the flushing chamber 14. The water flow in the inner well body 2 is extracted by a submersible pump, and at the same time, the flushing chamber 14 is driven to flush water into the water storage chamber 18 to backwash the water filter net cylinder 3.

[0043] The present application also provides a method for constructing an energy-saving dewatering inclined shaft, comprising the following steps: S1, excavation of installation hole 1; S2, lowering the assembled inner well body 2, the water filter cylinder 3, the outer well body 4 and the filling frame 9 into the installation hole 1. During the lowering process, the outer wall of the protruding portion 7 and the outer wall of the filling frame 9 are both in contact with the inner wall of the installation hole 1 to guide the lowering; S3, pour the filter material 5 into the filling frame 9 in batches, and take the filling frame 9 upward, and the filter material 5 enters between the installation hole 1 and the fitting part 6 through the discharge hole 11.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An energy-saving dewatering inclined well, characterized in that: include: The invention relates to a mounting hole (1), an inner well body (2), a water filter net cylinder (3), an outer well body (4) and filter material (5), wherein the inner well body (2), the water filter net cylinder (3) and the outer well body (4) are arranged in sequence from the inside to the outside; the outer well body (4) is provided with a fitting portion (6) and a protruding portion (7) alternately along its circumference; the fitting portion (6) and the inner well body (2) jointly clamp the water filter net cylinder (3); the protruding portion (7) protrudes outward relative to the water filter net cylinder (3); the outer diameter of the protruding portion (7) is consistent with the inner diameter of the mounting hole (1); and water holes (8) are provided on the fitting portion (6) and the outer well body (4); and the filter material (5) is filled between the outer wall of the fitting portion (6) and the inner wall of the mounting hole (1).

2. The energy-saving dewatering inclined well according to claim 1 is characterized in that: The dewatering inclined shaft also includes a filling frame (9), which is detachably connected between two adjacent protrusions (7), and the filling frame (9) has an outer circumference whose outer diameter is consistent with the inner diameter of the installation hole (1), and is used to connect the outer circumferences of the two adjacent protrusions (7).

3. The energy-saving dewatering inclined well according to claim 2 is characterized in that: The filling frame (9) comprises a plurality of sub-frames (91), and the sub-frames (91) are detachably spliced ​​in sequence along the axial direction of the inner well body (2).

4. The energy-saving dewatering inclined shaft according to claim 3 is characterized in that: The sub-frame (91) located at the bottom end of the filling frame (9) is provided with a bottom plate (10), and the bottom plate (10) is provided with a plurality of discharge holes (11) in an array for the filter material (5) to pass through.

5. The energy-saving dewatering inclined well according to claim 1 is characterized in that: The dewatering inclined well also includes a submersible pump lowered into the inner well body (2), the submersible pump being used to pump out the accumulated water in the inner well body (2).

6. The energy-saving dewatering inclined shaft according to claim 5 is characterized by: The water filter screen cylinder (3) is rotatably connected to the inner well body (2).

7. The energy-saving dewatering inclined well according to claim 6 is characterized by: The bottom of the inner well body (2) is provided with a first sealing plate (12); the inner wall of the inner well body (2) is provided with a plurality of enclosure frames (13) fixed on the first sealing plate (12); the enclosure frames (13), the inner wall of the inner well body (2) and the first sealing plate (12) together enclose a flushing cavity (14) with an opening facing upward; the number and positions of the enclosure frames (13) correspond one-to-one to the protruding portions (7); the first sealing plate (12) is provided with water holes (15) except for the portion opposite to the flushing cavity (14); The bottom of the outer well body (4) has a second sealing plate (16) for sealing the outer well body (4), the second sealing plate (16) being located below the first sealing plate (12) and connected to the first sealing plate (12) via a connecting rod (17); a water storage chamber (18) is formed between the inner wall of the protruding portion (7) and the water filter net cylinder (3), the water storage chamber (18) and the flushing chamber (14) being connected to the water filter net cylinder (3) via the water through hole (8), and the water storage chamber (18) is also connected to the inner chamber of the inner well body (2) via the water through hole (15).

8. The energy-saving dewatering inclined well according to claim 6 is characterized by: A positioning member (19) for positioning the water filter net cylinder (3) is provided between the water filter net cylinder (3) and the inner well body (2); the positioning member (19) comprises a clamping rod (191) hinged to the top end of the water filter net cylinder (3); and a plurality of clamping grooves (20) for the clamping rod (191) to be rotatably clamped are provided at intervals along the circumference of the top end of the inner well body (2).

9. The energy-saving dewatering inclined well according to claim 8, characterized in that: The dewatering inclined well further comprises a protective net (21) overlapped on the top of the inner well body (2), and the edge of the protective net (21) has an extension portion (22) that is snapped into the snap-in groove (20).

10. A construction method for an energy-saving dewatering inclined shaft, applicable to any one of claims 1 to 9 above, characterized in that: The following steps are involved: S1, excavation of installation hole (1); S2, lowering the assembled inner well body (2), the water filter net cylinder (3), and the outer well body (4) into the installation hole (1), wherein during the lowering process, the outer wall of the protruding portion (7) abuts against the inner wall of the installation hole (1) for guidance; S3, filling the filter material (5) between the outer wall of the fitting portion (6) and the installation hole (1).

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