Novel prefabricated inspection well drainage pipeline system

Abstract

The utility model belongs to the technical field of municipal drainage construction, and particularly relates to a novel prefabricated inspection well pipeline system. Preformed holes of inspection wells are designed to be rectangular, pipelines are also designed to be rectangular pipelines, the inspection wells and the pipelines are connected through mortise and tenon joint structures, the pipelines are connected through mortise and tenon joint structures, pipe cavities of the pipelines are designed to be oval, and the pipelines are connected through mortise and tenon joint structures; the upper surface of the chute in the inspection well is lower than the bottom end of the pipeline, so that the problem of leakage between the inspection well and the pipeline and between the pipelines is solved, the construction efficiency and quality are improved, and meanwhile, the problem of siltation in a well chamber of the inspection well is relieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of municipal drainage construction, and particularly relates to a new type of precast inspection well pipeline system. Background Art

[0002] The municipal rain and sewage drainage system is one of the important facilities for other engineering facilities to be used normally, and is an infrastructure closely related to people's lives. The perfection of its use function involves the vital interests of thousands of households. At present, rain and sewage drainage inspection wells and drainage pipelines are mostly prefabricated in factories. To achieve the interconnection between pipelines, connection holes for drainage pipelines are reserved when prefabricating inspection wells and assembled and connected at the construction site. When connecting drainage pipelines to inspection wells and between drainage pipelines, water seepage and leakage caused by loose connection will induce a series of quality problems. Even if secondary reinforcement measures are added at the connection part, this problem cannot be completely solved, and at the same time, the construction cost of the project is increased.

[0003] The main problems existing in the current construction of inspection wells and drainage pipelines are as follows:

[0004] (1) Most rain and sewage pipelines are circular pipelines. During construction, when compacting the backfill below the half-pipe of the circular pipeline, due to the circular structure of the pipeline, common compaction tools cannot directly act on the arc part below the half-pipe, resulting in the compaction degree of the backfill material in this part often not meeting the design requirements. Poor pipeline foundation conditions will lead to uneven settlement of the pipeline and the foundation, resulting in cracks and water leakage at the pipeline interface. Once a ground settlement quality accident occurs, the later maintenance is difficult and costly;

[0005] (2) At present, socket or plain-end connections are mostly used between pipelines. Affected by the trench operation surface, when using mortar to reinforce the pipeline interface, it is very difficult for workers to smear and flatten the interface at the bottom of the pipeline. There are often problems such as the strength of the smear mortar at the connection not meeting the design requirements, cracks and voids, cracking, insufficient insertion depth into the pipe socket, lack of tightness at the joint between the pipe band and the pipe socket, and the smear mortar not being integrated with the pipe socket concrete, resulting in cracks and water leakage;

[0006] (3) Whether it is excavating a trench to install a drainage pipeline or jacking a pipe to install a drainage pipeline, the connection between the pipeline and the inspection well is basically a rigid socket connection. Relatively speaking, for sewage pipelines, rainwater pipelines do not need to undergo a closed water test according to the construction specifications, and leakage is inevitable during use. Over time, it will cause pipeline foundation settlement, cracks at the connection between the pipeline and the well chamber, accelerate the sinking of the pipeline, and ultimately lead to deformation of the backfill material around the well chamber, posing a safety hazard to pedestrians and vehicles in serious cases;

[0007] (4) When the pipeline extends too far into the inspection well chamber and the flow velocity in the chamber is not high, laminar flow often occurs instead of turbulent flow or transitional flow, resulting in sedimentation at the bottom of the well. In the case of long-term operation and maintenance, sedimentation will occur in the pipeline. During the dredging of the pipeline and inspection well in the later stage, the maintenance cost is high.

[0008] (5) Since the current precast pipelines do not fully consider the connection between the pipeline and the circular well wall of the well chamber, after the pipeline is connected to the inspection well chamber, the pipeline will extend a certain distance in the inspection well chamber. This not only occupies the net volume of the well chamber and affects the usable space of the well chamber, but also makes it difficult for workers to fill the mortar tightly, especially at the lower part of the pipeline. This is also a quality defect that cannot be completely solved in the existing technology.

[0009] (6) The sedimentation in the inspection well chamber caused by the irregular masonry of the chute in the inspection well chamber. Due to the different lengths of the pipeline extending into the inspection well chamber, it is difficult to prefabricate and install the chute in the well chamber in a standardized manner, and it can only be manually masonry. This not only increases the construction cost and prolongs the construction period, but also makes it difficult to ensure the construction quality. Summary of the Invention

[0010] The problem to be solved by the present invention is to overcome the deficiencies of the background technology and provide a new type of precast inspection well pipeline system.

[0011] The present invention is realized by the following technical solutions:

[0012] A new type of prefabricated inspection well pipeline system includes an inspection well and several sections of pipelines. The upper end of the inspection well is provided with a well ring, and a manhole cover is arranged on the well ring. A chute is arranged at the bottom of the inspection well. The inspection well is provided with several reserved holes, and the overall shape of the reserved holes is rectangular. The reserved holes penetrate the inspection well upward, and a rubber strip limiting groove A is arranged around the reserved holes. Arc-shaped mortise grooves A are arranged on the inner walls of the inspection well on both sides of the reserved holes, and the bottom surface of the arc-shaped mortise groove A is on the same horizontal plane as the bottom surface of the reserved hole. The pipeline is a rectangular pipe, and the pipe cavity of the pipeline is an elliptical cavity, and the major axis of the pipe cavity is in the vertical direction. The pipeline is divided into pipeline A and pipeline B. Pipeline A is connected to the inspection well. Both end faces of pipeline A are concave arc surfaces, and arc-shaped tenon columns A that match the arc-shaped mortise grooves A are integrally arranged on both sides of the concave arc surface. A rubber strip limiting groove B that matches the rubber strip limiting groove A is arranged on the outer wall of one end of pipeline A. The end of pipeline A with the rubber strip limiting groove B is placed at the reserved hole. Pipeline A is connected to the inspection well by inserting the arc-shaped tenon column A into the arc-shaped mortise groove A. A water-stop rubber strip A is arranged between the rubber strip limiting groove A and the rubber strip limiting groove B. The concave arc surface of pipeline A conforms to the arc surface of the inner wall of the inspection well at the reserved hole. One end of pipeline B is a concave arc surface, and the other end is a convex arc surface that matches the concave arc surface. Arc-shaped tenon columns B are arranged on both sides of the concave arc surface of pipeline B. Blocks are arranged outward on both sides of the convex arc surface of pipeline B, and arc-shaped mortise grooves B that match both the arc-shaped tenon column A and the arc-shaped tenon column B are arranged on the blocks. Pipeline A and pipeline B are connected together through the arc-shaped tenon column A and the arc-shaped mortise groove B. Adjacent pipeline Bs are connected together through the arc-shaped tenon column B and the arc-shaped mortise groove B. Rubber strip limiting grooves C are symmetrically arranged up and down on the convex arc surface of pipeline B, and the two rubber strip limiting grooves C are respectively located above and below the pipe cavity. A water-stop rubber strip C is arranged in the rubber strip limiting groove C.

[0013] Further, several clamping grooves are arranged around the upper part of the outer wall of the inspection well, and the upper end surface of the clamping grooves is on the same horizontal plane as the upper end surface of the inspection well. Several clamping blocks that match the clamping grooves are arranged downward around the edge of the well ring. The well ring is connected to the inspection well by clamping the clamping blocks into the clamping grooves.

[0014] Further, hoisting rings A are symmetrically arranged at the lower part of the outer wall of the inspection well, and the hoisting rings A are located below the reserved holes.

[0015] Further, the hoisting rings A are embedded in the inspection well.

[0016] Further, there are two hoisting rings A.

[0017] Further, several hoisting rings B are arranged on the upper end surface of the pipeline along the length direction of the pipeline.

[0018] Further, the hoisting rings B are embedded in the pipeline.

[0019] Further, the chute is a prefabricated chute, and the upper surface of the chute is 20 - 30 cm lower than the bottom surface of the reserved hole.

[0020] Further, the gap between the chute and the inner wall of the inspection well is filled tightly with waterproof mortar.

[0021] Further, the pipe is square.

[0022] Advantages of the present invention:

[0023] (1) In the present invention, the circular reserved hole reserved in the well wall of the traditional precast inspection well is designed into a rectangular reserved hole, and the pipe and the inspection well are connected by a mortise and tenon structure, and a sealing rubber strip A is added for secondary anti-leakage, solving the leakage problem at the connection part between the pipe and the inspection well, and there is no need to perform secondary reinforcement treatment on the pipe part outside the inspection well, saving the process of secondary encapsulation and reinforcement between the pipe and the inspection well;

[0024] (2) Optimize the socket and spigot connection and flat joint connection between the traditional pipes into a mortise and tenon structure connection. The pipes are connected by a mortise and tenon structure, solving the leakage problem at the connection part between the existing pipes. At the same time, after the adjacent two pipes are connected by a mortise and tenon, there is no need to perform secondary internal tension between the pipes, improving the construction efficiency;

[0025] (3) The pipe A and the inspection well are connected by a mortise and tenon structure, and an inner concave arc surface is designed at the end, solving the problem that the lengths of the pipes extending into the inspection well chamber are different, and the problem that the pipes occupy the space in the inspection well chamber; (4) Optimize the pipe shape into a rectangle, solving the problem that the compaction around the pipe is not dense. Both sides of the rectangular pipe can meet the operation space and operation compaction surface of ramming tools such as steam rammers and plate rammers;

[0026] (5) The pipe cavity is designed into an oval cross-section. When the water flow in the pipe is small, relying on the height difference of the self-slope of the pipe can increase the flow velocity of the water flow in the pipe cavity, thus avoiding the sedimentation problem caused by the slow flow velocity of the water flow in the pipe. The oval pipe cavity not only improves the external pressure-bearing capacity of the entire pipe, but also increases the flowing water cross-sectional area in the pipe cavity;

[0027] (6) The chute adopts a precast chute, solving the problem of non-standard manual masonry of the chute in the well chamber, and can save the construction period and construction cost; at the same time, there is a certain elevation difference between the chute and the pipe A, and through the water erosion effect brought by the elevation difference, the sedimentation degree in the inspection well chamber is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the inspection well of this embodiment;

[0029] Figure 2 It is a schematic structural diagram of the well ring of this embodiment;

[0030] Figure 3 It is a schematic structural diagram of the chute of this embodiment;

[0031] Figure 4 Schematic diagram of the structure of pipeline A in this embodiment;

[0032] Figure 5 Schematic diagram of the structure of pipeline B in this embodiment;

[0033] Figure 6 Schematic diagram of the connection structure of pipeline A and pipeline B in this embodiment;

[0034] Figure 7 Schematic diagram of the connection structure between the inspection well and pipeline A in this embodiment;

[0035] Figure 8 Schematic diagram of the exploded decomposition of each part in this embodiment;

[0036] Figure 9 Schematic diagram of the sectional structure of the inspection well in this embodiment;

[0037] Figure 10 Schematic diagram of the two-way well structure in this embodiment;

[0038] Figure 11 Schematic diagram of the three-way well structure in this embodiment;

[0039] Figure 12 Schematic diagram of the four-way well structure in this embodiment.

[0040] In the figure, 1 is the inspection well, 2 is the well ring, 3 is the well cover, 4 is the chute, 5 is the reserved hole, 6 is the rubber strip limiting groove A, 7 is the arc-shaped mortise groove A, 8 is the pipe cavity, 9 is pipeline A, 10 is the arc-shaped tenon column A, 11 is the rubber strip limiting groove B, 12 is the water stop rubber strip A, 13 is pipeline B, 14 is the arc-shaped tenon column B, 15 is the stop block, 16 is the arc-shaped mortise groove B, 17 is the rubber strip limiting groove C, 18 is the clamping groove, 19 is the clamping block, 20 is the lifting ring A, and 21 is the lifting ring B. Specific implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0042] The novel prefabricated inspection well pipe system of this embodiment includes an inspection well 1, and several sections of pipes that are connected to the inspection well 1 and to each other. A well ring 2 is provided at the upper end of the inspection well 1, and a manhole cover 3 is provided on the well ring 2. A chute 4 is provided at the bottom of the inspection well 1. Different from the existing inspection well and pipe system, several reserved holes 5 for connecting pipes on the inspection well 1 are not of the conventional circular shape, but are rectangular as a whole. The reserved holes 5 penetrate the inspection well 1 upward, and a rubber strip limiting groove A6 is provided around the reserved holes 5. Arc-shaped mortises A7 are symmetrically provided on the inner walls of the inspection well 1 on both sides of the reserved holes 5, and the bottom surface of the arc-shaped mortises A7 is on the same horizontal plane as the bottom surface of the reserved holes 5. Hoisting rings A20 are symmetrically provided at the lower part of the outer wall of the inspection well 1. Preferably, there are two hoisting rings A20, and the hoisting rings A20 are located below the reserved holes 5. The hoisting rings A20 are fixed on the outer wall of the inspection well 1 by an inlay method, that is, a groove is provided on the outer wall of the inspection well 1, and the hoisting rings A20 are fixed in the groove.

[0043] The shape of the pipe used in this embodiment is also different from the conventional shape. The pipe in this embodiment is a rectangular pipe, and the rectangular shape of the reserved holes 5 on the inspection well 1 conforms to the rectangular shape of the pipe. Preferably, the pipe in this embodiment is square. In addition, different from the conventional pipe, the pipe cavity 8 of the pipe in this embodiment is no longer of the conventional circular shape, but is oval, and the long axis of the pipe cavity 8 is in the vertical direction. The pipe cavity 8 adopts an oval cross-section design, so that the circular cross-section at the bottom of the pipe cavity 8 is smaller. When the water flow in the pipe is small, relying on the height difference of the self-slope of the pipe can increase the flow velocity of the water flow in the pipe cavity 8, thereby avoiding the sedimentation problem caused by the slow flow velocity of the water flow in the pipe. At the same time, the pipe cavity 8 is designed to be oval, which not only improves the external pressure-bearing capacity of the entire pipe, but also increases the cross-sectional area of the water flow in the pipe cavity 8.

[0044] The pipelines in this embodiment are divided into two structural forms: pipeline A9 and pipeline B13. Pipeline A9 is connected to the inspection well 1, and one end of pipeline A9 is connected to the inspection well 1 at the reserved hole 5. The end faces at both ends of pipeline A9 are concave arc surfaces, and arc-shaped tenons A10 that match the arc-shaped mortises A7 are integrally provided on both sides of the concave arc surface. A rubber strip limiting groove B11 that matches the rubber strip limiting groove A6 is provided on the outer wall of one end of pipeline A9. When pipeline A9 is connected to the inspection well 1, the end of pipeline A9 with the rubber strip limiting groove B11 is placed at the reserved hole 5. When placing, the arc-shaped tenons A10 of pipeline A9 are respectively inserted into the arc-shaped mortises A7 to be plugged together with the inspection well 1. At this time, the rubber strip limiting groove A6 and the rubber strip limiting groove B11 are just aligned. A rectangular water-stop rubber strip A12 is provided between the rubber strip limiting groove A6 and the rubber strip limiting groove B11. The concave arc surface of pipeline A9 conforms to the arc surface of the inner wall of the inspection well 1 at the reserved hole 5. After pipeline A9 is plugged into the reserved hole 5 of the inspection well 1, due to the matching of the radian of the end face of pipeline A9 and the radian of the inner wall of the reserved hole 5 of the inspection well 1, pipeline A9 is flush with the inner wall of the inspection well 1 after being embedded in the well wall of the inspection well 1, and pipeline A9 no longer occupies the space inside the inspection well 1, solving the problem that the lengths of pipeline A9 extending into the inner wall of the inspection well 1 are inconsistent.

[0045] The above-mentioned pipeline B13 is another structural form of the pipeline. Pipeline B13 is used to connect to pipeline A9, and several sections of pipeline B13 are connected together to form different pipeline lengths. The structure of pipeline B13 is different from that of pipeline A9. One end of pipeline B13 is a concave arc surface, which is the same as the concave arc surface of pipeline A9, while the other end of pipeline B13 is a convex arc surface that matches the concave arc surface. Arc-shaped tenons B14 are provided on both sides of the concave arc surface of pipeline B13. Blocks 15 are provided outward on both sides of the convex arc surface of pipeline B13, and arc-shaped mortises B16 that match both the arc-shaped tenons B14 and the arc-shaped tenons A10 are symmetrically provided on the two side blocks 15. The arc-shaped tenons B14 and the arc-shaped tenons A10 are arc-shaped tenons of the same size and shape. Pipeline A9 and pipeline B13 are plugged and connected together through the arc-shaped tenons A10 and the arc-shaped mortises B16, and adjacent pipeline B13s are plugged and connected together through the arc-shaped tenons B14 and the arc-shaped mortises B16. After the arc-shaped tenons A10 and the arc-shaped mortises B16 are plugged or the arc-shaped tenons B14 and the arc-shaped mortises B16 are plugged, a closed rectangular block protruding outward on both sides is formed at the connection. To ensure the sealing performance of the connection, rubber strip limiting grooves C17 are symmetrically provided up and down on the convex arc surface of pipeline B13, and the two rubber strip limiting grooves C17 are respectively located above and below the pipe cavity 8. A water-stop rubber strip C is provided in the rubber strip limiting groove C17. In this embodiment, both the water-stop rubber strip A12 and the water-stop rubber strip C are made of water-swellable water-stop rubber strips.

[0046] In this embodiment, the chute 4 is not constructed by manually building it inside the inspection well 1, but instead a precast chute is used. The precast chute can be integrally cast with the inspection well 1 in the factory, or the chute 4 can be precast separately in advance and then hoisted and installed into the inspection well 1 later. After the chute 4 is hoisted into the inspection well 1, the gap between the chute 4 and the inner wall of the inspection well 1 is filled tightly with waterproof mortar. The chute 4 in this embodiment is 20 - 30 cm lower than the bottom surface of the reserved hole 5, that is, the height of the upper surface of the chute 4 is 20 - 30 cm lower than the bottom elevation of the pipeline A9 inside the inspection well 1, so that there is a certain elevation difference between the pipe cavity 8 of the pipeline A9 and the bottom surface of the chute 4 inside the inspection well 1 of the inspection well 1. When the water in the pipeline A9 enters the inspection well 1, through the water flushing effect brought by the elevation difference, the silt in the inspection well 1 is flushed, reducing the degree of siltation inside the inspection well 1 of the inspection well 1.

[0047] In this embodiment, a number of lifting rings B21 are provided along the length direction of the upper end face of the pipeline. That is, a number of lifting rings B21 are provided on each section of the pipeline A9 and the pipeline B13. Similarly, the lifting rings B21 are also installed in an embedded manner. Grooves are provided on the upper end faces of the pipeline A9 and the pipeline B13, and the lifting rings B21 are fixed in the grooves.

[0048] In this embodiment, the well ring 2 and the inspection well 1 are connected by a clamping method. A number of clamping grooves 18 are provided on the upper part of the outer wall of the inspection well 1 in a circumferential manner. The upper end face of the clamping groove 18 is on the same horizontal plane as the upper end face of the inspection well 1. A number of clamping blocks 19 that match the clamping grooves 18 are provided downward along the edge of the well ring 2. The well ring 2 is lowered to snap the clamping blocks 19 into the clamping grooves 18 of the inspection well 1 to be clamped together with the inspection well 1.

[0049] In this embodiment, the reserved hole 5 in the inspection well 1 can be single or multiple. If there are two reserved holes 5, a two-way well is formed, as shown in the appendix Figure 10 ; if there are three reserved holes 5, a three-way well is formed, as shown in the appendix Figure 11 ; if there are four reserved holes 5, a four-way well is formed, as shown in the appendix Figure 12 ;

[0050] During construction, first conduct trench excavation, lay a sand cushion layer at the bottom, and then hoist inspection well 1 for installation. Connect pipeline A9 at the reserved hole 5 of inspection well 1. During installation, install water-stop rubber strip A12 in the rubber strip limiting groove A6. Hoist pipeline A9 so that the arc-shaped tenon column A10 is inserted into the arc-shaped mortise groove A7. After the installation of pipeline A9 at each reserved hole 5 is completed, hoist pipeline B13 to connect pipeline A9. During installation, install water-stop rubber strip C in the rubber strip limiting groove C17. Align the arc-shaped mortise groove B16 of pipeline B13 with the arc-shaped tenon column A10 of pipeline A9 and slowly lower it. Then, successively install and connect pipeline B13. After the installation and acceptance of inspection well 1, pipeline A9, and pipeline B13 are completed in sequence, if a precast chute separated from inspection well 1 is adopted, it is necessary to use a hoisting tool to hoist chute 4 into the inspection well chamber of inspection well 1 to ensure that the groove in the middle of chute 4 is consistent with the water flow direction of the pipeline. After correct installation, fill the gap between chute 4 and the inner wall of inspection well 1 with 1:2 waterproof mortar for compaction; if the adopted chute 4 is a precast chute integrated with inspection well 1, this construction step is not required. Then, install manhole cover 2, and then backfill the trench, backfill and compact in sections. Finally, install manhole cover 3.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; those of ordinary skill in the art should understand that they can still modify the technical solutions described in the above embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A novel prefabricated inspection well drainage pipe system, comprising an inspection well (1) and a plurality of pipe sections, wherein a well ring (2) is provided at the upper end of the inspection well (1), a well cover (3) is provided on the well ring (2), and a chute (4) is provided at the bottom of the inspection well (1), characterized in that: The inspection well (1) is provided with a plurality of reserved holes (5), the reserved holes (5) are rectangular in shape as a whole, the reserved holes (5) penetrate the inspection well (1) upwardly, a rubber strip limiting groove A (6) is provided around the reserved holes (5), arc-shaped mortise grooves A (7) are provided on the inner wall of the inspection well (1) on both sides of the reserved holes (5), and the bottom surface of the arc-shaped mortise groove A (7) is on the same horizontal plane as the bottom surface of the reserved holes (5); the pipeline is a rectangular pipe, the lumen (8) of the pipeline is an elliptical lumen, and the long axis of the lumen (8) is 90°. In the vertical direction, the pipeline is divided into a pipeline A (9) and a pipeline B (13). The pipeline A (9) is connected to the inspection well (1). Both end faces of the pipeline A (9) are concave arc surfaces. Both sides of the concave arc surfaces are integrally provided with arc-shaped tenon columns A (10) matching the arc-shaped mortise groove A (7). The outer wall of one end of the pipeline A (9) is provided with a rubber strip limiting groove B (11) matching the rubber strip limiting groove A (6). The pipeline A (9) is provided with a rubber strip limiting groove B (11). One end of the pipe A (9) is placed at the reserved hole (5), the pipe A (9) is inserted into the arc-shaped mortise A (7) through the arc-shaped tenon column A (10) and connected to the inspection well (1), a water-stop rubber strip A (12) is provided between the rubber strip limiting groove A (6) and the rubber strip limiting groove B (11), and the concave arc surface of the pipe A (9) matches the inner wall arc surface of the inspection well (1) at the reserved hole (5); one end of the pipe B (13) is an inner concave arc surface and the other end is an outer convex arc surface matching the inner concave arc surface, arc-shaped tenon columns B (14) are provided on both sides of the inner concave arc surface of the pipe B (13), and blocks (14) are provided on both sides of the outer convex arc surface of the pipe B (13) to the outside. 5), the stopper (15) is provided with an arc-shaped mortise B (16) matching with the arc-shaped tenon column A (10) and the arc-shaped tenon column B (14); the pipe A (9) and the pipe B (13) are connected together through the arc-shaped tenon column A (10) and the arc-shaped tenon groove B (16); adjacent pipes B (13) are connected together through the arc-shaped tenon column B (14) and the arc-shaped tenon groove B (16); rubber strip limiting grooves C (17) are symmetrically provided on the outer convex curved surface of the pipe B (13) in the upper and lower parts, and the two rubber strip limiting grooves C (17) are respectively located above and below the tube cavity (8), and a water-stop rubber strip C is provided in the rubber strip limiting groove C (17).

2. The novel prefabricated inspection well drainage pipe system according to claim 1 is characterized in that: A plurality of slots (18) are provided around the upper part of the outer wall of the inspection well (1), and the upper end surface of the slots (18) is on the same horizontal plane as the upper end surface of the inspection well (1). A plurality of blocks (19) matching the slots (18) are provided around the edge of the well ring (2), and the well ring (2) is connected to the inspection well (1) by plugging the blocks (19) into the slots (18).

3. The novel prefabricated inspection well drainage pipe system according to claim 1 is characterized in that: A lifting ring A (20) is symmetrically provided at the lower part of the outer wall of the inspection well (1), and the lifting ring A (20) is located below the reserved hole (5).

4. The novel prefabricated inspection well drainage pipe system according to claim 3 is characterized in that: The lifting ring A (20) is embedded in the inspection well (1).

5. The novel prefabricated inspection well drainage pipe system according to claim 3 is characterized in that: There are two lifting rings A (20).

6. The novel prefabricated inspection well drainage pipe system according to claim 1 is characterized in that: The upper end surface of the pipeline is provided with a plurality of lifting rings B (21) along the length direction of the pipeline.

7. The novel prefabricated inspection well drainage pipe system according to claim 6 is characterized in that: The lifting ring B (21) is embedded in the pipeline.

8. The novel prefabricated inspection well drainage pipe system according to claim 1 is characterized in that: The chute (4) is a prefabricated chute, and the upper surface of the chute (4) is 20-30 cm lower than the bottom surface of the reserved hole (5).

9. The novel prefabricated inspection well drainage pipe system according to claim 8 is characterized in that: The gap between the chute (4) and the inner wall of the inspection well (1) is filled and compacted with waterproof mortar.

10. The novel prefabricated inspection well drainage pipe system according to claim 8 is characterized in that: The pipeline is square.

Images