Concrete prefabricated inspection well and construction method of corrugated drainage pipe network

Abstract

The invention discloses a concrete prefabricated inspection well and a construction method of a corrugated drainage pipe network, the prefabricated inspection well comprises a well body, a pipe connector integrated with the well body is arranged on the well body, and an auxiliary supporting mechanism for assisting the pipe connector to bend in a non-fracture mode is arranged at the joint of the well body and the pipe connector. According to the integrally-formed well body, the well body and the pipe connector have good integrity and sealing performance, and the problem that at present, high leakage exists after sealing connection of the pipe connector and a pipeline connecting opening of the well body is conducted on site is solved; the problems that large pipe orifice dislocation deviation exists between a pipe connector and a pipeline connector of a well body due to the fact that the earth surface is uneven, and in the later construction landfill process, the landfill effect causes external force influence on the connection sealing performance between the pipe connector and the well body again are solved, and therefore the sealing performance of a pipe network can be improved, and the service life of the pipe network is prolonged. And the operation convenience of pipeline connection in the construction process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of municipal pipe network construction, and in particular to a construction method of a prefabricated concrete inspection well and a corrugated drainage pipe network. Background Art

[0002] The municipal road drainage network is an important part of urban infrastructure and plays a vital role in ensuring urban environmental sanitation and public safety. It is mainly used for collecting, transporting and treating rainwater, domestic sewage, industrial wastewater and other wastewater facilities, including drainage pipes, drainage ditches, drainage pumping stations, discharge outlets, etc., to discharge wastewater into natural water bodies or sewage treatment plants. The discharge outlets need to be strictly monitored and managed to ensure that the discharged wastewater meets environmental protection standards.

[0003] With the development of my country's economy and society, the continuous improvement of urbanization, and the construction of various new municipal road projects, the requirements for construction quality have been raised to a higher level. Municipal road drainage pipe network engineering is an important basic component of municipal road construction and development. In recent years, the use of prefabricated concrete inspection wells has saved the construction period of the pipe network compared with traditional cast-in-place inspection wells. However, there are often great risks of leakage at the joints between prefabricated concrete inspection wells and pipelines, which is a weak link in construction. Quality problems will occur later, and even cause pipeline subsidence and leakage, which will eventually lead to road subsidence. The construction quality of all prefabricated concrete inspection wells is particularly important in outdoor projects. Summary of the invention

[0004] In response to the above-mentioned problems, the present invention aims to provide a prefabricated concrete inspection well and a construction method for a corrugated drainage pipe network, which effectively solves the problem of high leakage after the current on-site sealing connection between the pipe connector and the pipe connection port of the well body, improves the sealing of the pipe network, and reduces the problems of water accumulation in the pipe, leakage and foundation collapse in the later stage.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a prefabricated concrete inspection well, including a well body, on which a pipe connector with an integral structure is arranged, and at the connection position between the well body and the pipe connector, an auxiliary support mechanism is arranged to assist the pipe connector to bend in a non-breaking manner.

[0006] Preferably, the pipe connector is prefabricated as a whole when the well body is formed.

[0007] Preferably, the pipe connector extends symmetrically from both side walls of the well body, and the pipe connector is an integral pipe structure that penetrates the well body, and an opening that penetrates the well body is provided on the upper side of the part of the pipe connector located inside the well body.

[0008] Preferably, the auxiliary support mechanism covers the overlapping portion between the pipe connector and the side wall of the well body, and the covering width is greater than the thickness of the side wall of the well body.

[0009] Preferably, the auxiliary support mechanism includes an auxiliary pipe body wrapped around the outer wall of the pipe connector and integrally formed with the well body, the auxiliary pipe body having a fixed section that is larger than the width of the well body side wall and wraps the pipe connector, and a deformable bending section extending from the outer end of the fixed section.

[0010] A method for constructing a prefabricated concrete inspection well and a corrugated drainage pipe network comprises the following steps:

[0011] S1. Hoist the well body with the integrally formed pipe connector to the designed position in the construction ditch;

[0012] S2, sealingly connecting the finished pipe to the pipe connectors on both sides of the well body;

[0013] S3, connecting several finished pipes in sequence at the outer end of the finished pipe;

[0014] S4. After the well body, pipe connectors and several finished pipes have passed the water-tightness test, the ditch is backfilled.

[0015] Preferably, in the process of connecting the finished pipes to the pipe connectors and the finished pipes to the finished pipes in steps S2-S3, an adjusting and fixing component for adjusting the position of the finished pipes is provided.

[0016] Preferably, the adjusting and fixing member comprises a support block which is supported at a distance and fits the bottom of the finished pipe.

[0017] Preferably, the adjusting and fixing component also includes a π-shaped frame that limits the upward movement of the horizontal tube.

[0018] The beneficial effects of the present invention are as follows: the integrally formed well body of the present invention has better integrity and sealing with the pipe connector, solving the problem of high leakage after the pipe connector and the pipe connecting port of the well body are sealed and connected on site, as well as the problem of large pipe port misalignment deviation between the pipe connector and the pipe connecting port of the well body due to the uneven surface during the connection process, and the problem of external force affecting the connection sealing between the pipe connector and the well body again due to the landfill effect during the later construction and landfill process, thereby improving the sealing of the pipeline network and the convenience of pipeline connection operation during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural diagram of the well body of the present invention.

[0020] Figure 2 This is a cross-sectional structural diagram of the well body of the present invention.

[0021] Figure 3 For the present invention Figure 2 Side view of the structure.

[0022] Figure 4 For the present invention Figure 2 Top view of the structure.

[0023] Figure 5 It is a top view showing the connection between the finished pipe and the pipe connector of the present invention.

[0024] Figure 6 This is a diagram showing that the pipe opening of the finished pipe of the present invention and the pipe opening of the pipe connector are misaligned.

[0025] Figure 7 For the present invention Figure 6 Illustration of the effect of the finished pipe driving the pipe connector downward.

[0026] Figure 8 For the present invention Figure 7 Illustration of the middle pipe connector being broken (fractured) during the downward movement.

[0027] Fig. 9 This is a cross-sectional structural diagram of the auxiliary tube body of the present invention.

[0028] Fig.10 This is a diagram showing the bending of the deformed bending section of the auxiliary pipe body of the present invention under external force.

[0029] Fig.11 This is a diagram showing the deformation and bending section of the auxiliary pipe body of the present invention along with the bending of the pipe connector.

[0030] Fig.12 The figure is a diagram showing the bending amplitude of the pipe connector limited by the deformed bending section driven by the misalignment of the finished pipe according to the present invention.

[0031] Fig.13 The fixed section of the present invention is provided with a limiting protrusion which is positioned relative to the well body.

[0032] Fig.14 The figure shows that a plurality of finished pipes and pipe connectors of the present invention are sequentially spliced ​​together.

[0033] Fig.15 This is a diagram showing the support block of the present invention receiving the finished pipe.

[0034] Fig.16 This is a front view of the support block of the present invention receiving the finished pipe.

[0035] Fig.17 This is a diagram showing the tilting or tipping of the support block during the axial displacement of the finished pipe of the present invention.

[0036] Fig.18 For the present invention Fig.17 Illustration of the height reduction of the finished pipe supported on the foundation.

[0037] Fig.19 This is a diagram showing the arrangement of arc-shaped support bars in a support block according to the present invention.

[0038] Fig. 20 For the present invention Fig.19 A-section view.

[0039] Fig.21 This is a diagram showing the deflection of the arc-shaped support strip during the axial movement of the finished tube of the present invention.

[0040] Fig. 22 According to the present invention, the inner bottom surface of the arc-shaped support strip is set as a circular arc convex surface connected to the finished pipe as shown in the figure.

[0041] Fig.23 This is a diagram of a support pointed column inserted into the ground surface at the bottom of the support block according to the present invention.

[0042] Fig.24 It is a diagram of the π-type frame structure of the present invention.

[0043] Fig.25 This is an enlarged diagram of the π-shaped frame of the present invention pressing down on the finished pipe.

[0044] Fig.26 The present invention sets the circumference of the pressure rod as a gradual structural diagram.

[0045] Fig. 27 This is a diagram showing the effect of rotating the pressure rod and pressing it against the circumference of the finished pipe.

[0046] Fig.28 It is a physical illustration of the well body of the present invention.

[0047] Fig.29 It is a physical illustration of the adjustment and limiting of the finished pipes spliced ​​by the support block and the frame of the present invention.

[0048] In the figure: 1-well body; 2-pipe connector; 3-finished pipe; 4-auxiliary pipe body; 41-fixed section; 42-deformed bending section; 43-limiting protrusion; 5-support block; 5a-arc-shaped recess; 51-supporting pointed column; 6-arc-shaped support bar; 7-insertion rod; 71-sleeve; 8-pressure rod; 9-locking screw. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0050] See attached Figures 1 to 29 A prefabricated concrete inspection well shown in FIG. 1 includes a well body 1. The well body 1 is as shown in FIG. Figure 2As shown in the partial figure, it is usually a blind well structure with an opening at the top. At present, when the pipeline connection construction of the inspection well is carried out, the pipeline connection openings are symmetrically reserved on the outer wall of the inspection well. Later, by connecting the pipeline (such as a corrugated pipe) to the pipeline connection openings, the construction of the underground drainage network is realized. In order to solve the problem that the current construction method has a large potential leakage risk at the connection between the pipeline connection opening of the well body 1 and the connected pipeline in the later stage, as shown in the figure, the pipeline connection openings are symmetrically reserved on the outer wall of the inspection well. Figure 1-5 As shown, the present invention is provided with a pipe connector 2 as an integral structure with the well body 1. When the pipe connector 2 and the well body 1 are cast and formed, they are pre-buried in the casting mold of the well body 1 (and preferably a sealing ring is provided on the outer wall of the pipe connector 2 to have better sealing after casting and forming with the well body 1), so that the well body 1 can form an integral structure with the pipe connector 2 after molding. Through the integral molding, the well body 1 can fit on the pipe connector 2 with better sealing, thereby solving the problem that when the pipe connector 2 and the pipe connection port of the well body 1 are currently sealed on site, there is a large misalignment deviation between the pipe connector 2 and the pipe connection port of the well body 1 due to the unevenness of the ground, and the landfill effect causes external force to affect the connection sealing between the pipe connector 2 and the well body 1 again during the later construction and landfill process.

[0051] In order to facilitate the transportation of the prefabricated well body 1 and pipe connector 2, the pipe connector 2 adopts a finished pipe 3 (such as a corrugated pipe), and the length extending outside the well body 1 is less than the length of the entire finished single pipe, avoiding the problem of the pipe connector 2 extending too far from the well body 1 and affecting the overall transportation.

[0052] Although the pipe connector 2 and the well body 1 are integrally cast and prefabricated, the sealing connection of multiple finished pipes 3 on the pipe connector 2 is performed later, and the backfill impact on the pipe connector 2 during the later backfilling process affects the sealing of the connection between the pipe connector 2 and the well body 1. Figure 6 As shown, during the connection process between the finished pipe 3 and the pipe connector 2, due to the uneven surface of the excavated ditch, there is a vertical height difference between the pipe opening of the finished pipe 3 and the pipe opening of the pipe connector 2, such as Figure 7-8 As shown by the middle arrow, after the finished pipe 3 is sealed and connected to the pipe connector 2, the surface supporting the finished pipe 3 is lower than the surface supporting the pipe connector 2, so the end of the pipe connector 2 will be driven downward by the gravity of the finished pipe 3. Although the pipe connector 2 and the well body 1 are prefabricated as an integrated structure, the side wall of the well body 1 is still formed with a pipe connection port through the shaping of the pipe connector 2. Fig. 9 The middle oval circle has a port corner structure, so when the finished pipe 3 drives the pipe connector 2 downward due to the uneven surface, the pipe connector 2 is easily broken (such as Fig. 9The state shown in the figure) may easily cause the water in the pipeline to leak into the ground in the later stage, and finally cause the road surface to sink. Therefore, in order to solve this problem, an auxiliary support mechanism for assisting the pipe connector 2 to bend in a non-breaking manner is provided at the connection position between the well body 1 and the pipe connector 2, that is, the pipe connector 2 is auxiliary supported by the auxiliary support mechanism. Under the auxiliary support, the auxiliary pipe connector 2 avoids the non-breaking bending of the pipe connector 2 under the driving action of the finished pipe 3, thereby effectively solving the problem that the finished pipe 3 is easily broken by the driving of the finished pipe 3.

[0053] Further, if Figure 2-4 As shown, the pipe connector 2 symmetrically extends from the two side walls of the well body 1. The pipe connector 2 is an integral pipe structure that penetrates the well body 1. An opening that penetrates the well body 1 is opened on the upper side of the pipe connector 2 located in the well body 1. That is, when the well body 1 is formed, it is preferred to open the middle part of the finished pipe 3 that is equal to the inner diameter of the well body 1 (preferably cut off the upper half of the middle part of the finished pipe 3). The pipe connector 2, as shown in FIG. Figure 2 As shown, the upper opening is used to communicate with the well body 1, so that water entering from the top of the well body 1 can smoothly enter the pipe body through the opening. The two sides of the pipe body extend to the outside of the well body 1 to form pipe connectors 2 on both sides of the well body 1. The pipe connectors 2 on both sides of the well body 1 are still an integrated structure through the open part in the well body 1, that is, the pipe connectors 2 on both sides of the well body 1 are an integrated structure. When the well body 1 is prefabricated, the coaxiality of the pipe connectors 2 on both sides can be guaranteed, and the pipe connectors 2 on both sides are "pulled" and restricted to each other. Compared with prefabricating pipe joints separately on the two side walls of the well body 1, the pipe openings of the pipe connectors 2 located in the well body 1 can be extended inwardly, so that the inner and outer sides of the side walls of the well body 1 are balanced (by gravity) with each other, and then when the pipe connectors 2 carry water in the subsequent pipe connectors 2, the gravity of the water body can be effectively overcome to drive the downward force of the pipe connectors 2 located on the outside of the well body 1, that is, under the gravity of the water body, the verticality, connection tightness and sealing of the pipe connectors 2 and the side walls of the well body 1 can still be guaranteed.

[0054] In order to overcome the problem that the pipe connector 2 is broken at the joint with the well body 1 and under the support of the pipe connector 2 due to the misalignment of the finished pipe 3, as shown in FIG. Figure 9-11As shown, the auxiliary support mechanism covers the overlapping part of the pipe connector 2 and the side wall of the well body 1, and the covering width is greater than the thickness of the side wall of the well body 1, that is, the auxiliary support device covers the overlapping position of the pipe connector 2 and the side wall of the well body 1 to enhance the connection strength between the pipe connector 2 and the well body 1, and the auxiliary support device further extends the covering width of the pipe connector 2 to the outside of the well body 1, that is, the connection between the pipe connector 2 and the well body 1 is isolated and supported by the auxiliary support device, so that when the pipe connector 2 is driven by the misalignment of the finished pipe 3 and the weight of the water body, it will not directly contact the side of the pipeline connection port of the well body 1 to cause fracture (breakage), thereby effectively protecting the pipe connector 2.

[0055] Specifically, Fig.12 As shown, the auxiliary support mechanism includes an auxiliary pipe body 4 wrapped around the outer wall of the pipe connector 2 and formed integrally with the well body 1, and the auxiliary pipe body 4 has a fixed section 41 that is larger than the width of the side wall of the well body 1 and wraps the pipe joint, and a deformable bending section 42 extending from the outer end of the fixed section 41. The fixed section 41 is preferably a hard structure and extends to the outside of the well body 1, so that the corners at the junction of the pipe connector 2 and the well body 1 can be effectively isolated, thereby avoiding the problem that the pipe connector 2 is easily broken due to the support of the corners on the pipe connector 2. However, the misalignment driving effect between the finished pipe 3 and the pipe connector 2 still exists in practice, as well as the gravity effect of the water body on the pipe connector 2, that is, the pipe structure will still have a certain degree of bending. Under the effect of bending, there is still a further problem of supporting and breaking the pipe connector 2 through the end of the fixed section 41. Therefore, the auxiliary support device also extends a deformable bending section 42 at the tail end of the fixed section 41, which is preferably made of a flexible material (such as rubber with a certain strength). Therefore, when the pipe connector 2 is driven by the misalignment of the finished pipe 3 and the gravity of the water body and bends, as shown in FIG. Fig.12 In the state shown, the deformable bending section 42 bends along with the pipe connector 2, and the bending amplitude of the pipe connector 2 is reduced by the bending strength of the deformable bending section 42, and the deformable bending section 42 is smoothly connected with the fixed section 41, so that there is no hard contact corner structure on the pipe connector 2, and thus the problem of the pipe connector 2 being broken can be effectively avoided when the pipe connector 2 is bent by misalignment and the gravity of water.

[0056] In order to improve the relative stability of the auxiliary pipe body 4 and the well body 1, it is preferred that Fig.13 As shown, a limiting protrusion 43 which can be embedded in the well body 1 is provided on the outer peripheral surface of the fixing section 41 of the auxiliary pipe body 4. The limiting protrusion 43 can form an embedding recess in the side wall of the well body 1 during the casting process of the well body 1, such as Fig.13As shown, after the well body 1 is formed, the relative position of the auxiliary pipe body 4 and the well body 1 is limited by the embedding of the limiting protrusion 43, so as to avoid displacement of the auxiliary pipe body 4 and the well body 1, thereby better protecting the pipe connector 2. Seal rings are provided on the inside and outside of the auxiliary pipe body 4, between the well body 1 and the pipe connector 2, to improve the sealing performance between them.

[0057] Based on the above-mentioned well body 1 structure, the present invention also provides a construction method of a prefabricated concrete inspection well and a corrugated drainage pipe network, comprising the following steps:

[0058] S1. Hoist the well body 1 with the integrally formed pipe connector 2 to the designed position in the construction ditch. A 300mm thick 3:7 lime soil cushion layer is set in the ditch for the placement of the well body 1. After completion, a 100mm concrete cushion layer is set, so that the well body 1 can be placed to stabilize the well body 1. After the well body 1 is hoisted, the reserved hole position and elevation are fine-tuned to ensure that there is no reverse slope after the subsequent finished pipe 3 is connected, ensuring smooth drainage.

[0059] S2, sealingly connecting the finished pipe 3 to the pipe connectors 2 on both sides of the well body 1. During the connection process, a sealing and waterproof heat shrink sleeve and two sealing rings (not shown in the figure) are inserted into the finished pipe 3 in advance, and then the sealing rings are installed at the sockets of the pipe connector 2 at a spacing of 150-200mm. Finally, after the sealing rings are installed, the sealing and waterproof heat shrink sleeves are used to seal the sockets to reduce the risk of pipeline leakage.

[0060] S3, connecting several finished pipes 3 in sequence at the outer ends of the finished pipes 3, and the connection process is the same as the connection method between the pipe connector 2 and the finished pipes 3 in the above step S2.

[0061] In order to ensure that the finished pipe 3 does not undergo a large displacement during the construction process, an adjustment and fixing component for adjusting the position of the finished pipe 3 is provided during the process of connecting the finished pipe 3 with the pipe connector 2 and the finished pipe 3 with the finished pipe 3 in steps S2-S3. Figure 15-16 As shown, the adjusting and fixing member includes a support block 5 that is supported at a distance and fits the bottom of the finished pipe 3. The support block 5 is prefabricated (preferably the support block 5 is prefabricated with concrete) with an arc-shaped recess 5a that fits the finished pipe 3. Before the finished pipe 3 is connected, the support block 5 is first placed on the surface of the ditch and leveled, and then the finished pipe 3 is embedded in the arc-shaped recess 5a of the support block 5 to support the finished pipe 3 and limit the radial displacement of the finished pipe 3, thereby avoiding the problem of water accumulation in the pipe due to the non-straight pipeline laying. Fig.16 As shown, the support blocks 5 are arranged at intervals along the laying length of the pipeline.

[0062] During the pipe docking process, there will be deviations in the axial docking length, such as the overlapping widths of the adjacent pipe bodies are inconsistent. Therefore, in the process of moving the pipe body left and right, the pre-placed support block 5 is easily tilted and tipped over by contact friction. Fig.17 As shown, when the support block 5 is tilted, the arc-shaped recess 5a has a greater tilt drop in the support height of the pipeline, such as Fig.18 As shown by the dotted line in the middle, it affects the smooth laying and docking operation of the pipeline. Therefore, in order to solve this problem, Figure 19-20 As shown, an arc-shaped support bar 6 is rotatably arranged in the arc-shaped recess 5a. Fig.21 As shown in the figure, when the pipeline needs to be moved axially to adjust the docking width, the arc support bar 6 swings left and right under the driving action of the pipeline to cooperate with the axial adjustment of the pipeline, while the support block 5 is in a static state, thereby effectively solving the problem of tilting and tipping of the support block 5 caused by the axial adjustment of the pipeline. And under the swing support of the arc support bar 6, the convenience of axial adjustment of the pipeline is improved. The upper surface of the arc support bar 6 that contacts the pipeline is preferably an arc surface, such as Fig. 22 As shown, the pipeline can be smoothly deflected on the arc surface, and at the same time, the pipeline is in contact with different positions (in cross-section) on the arc surface during the deflection process, thereby ensuring that the change in the supporting height of the pipeline is reduced, avoiding a large vertical drop in the pipeline and increasing the misalignment error with the adjacent pipeline.

[0063] Since the ground surface at the trench excavation site is usually not hardened but relatively soft, in order to further improve the stability of the contact between the support block 5 and the ground surface, it is preferred that Fig.23 As shown, at the bottom of the support block 5, support pointed columns 51 that can be inserted into the ground by external force are obliquely arranged on both sides of the axial direction of the pipeline. During the placement of the support block 5, the support pointed columns 51 are driven into the ground by external force, thereby effectively improving the stability of the support block 5 in supporting the pipeline.

[0064] The pipe used in the present invention is preferably a corrugated pipe, which is deformed to bend upward during the docking process, which leads to the pipe being not straight and water accumulation is likely to form in the pipe later. Therefore, in order to solve this problem, the adjusting and fixing member also includes a π-shaped frame for limiting the upward movement of the horizontal pipe. The specific structure is as follows: Figure 24-25 As shown, it includes a plug rod 7 vertically inserted into the ground from both sides of the pipeline, a sleeve 71 is horizontally arranged at the top of each plug rod 7, and a pressure rod 8 is inserted into the horizontal sleeve 71. During operation, the plug rod 7 is inserted into both sides of the upwardly bent part of the finished pipe 3, and then the pressure rod 8 is horizontally inserted into the symmetrical sleeves, and then the plug rods 7 on both sides are further inserted into the ground through the pressure rod 8, so that the pressure rod 8 is pressed against the upper surface of the pipeline and keeps the pipeline surface in a horizontal state, thereby avoiding the problem of water accumulation in the pipeline caused by the upward bending of the pipeline after subsequent landfill.

[0065] In the process of pressing the pressure rod 8 to drive the pipeline to a horizontal straight line, when the pressure rod 8 is pressed down and contacts the pipeline surface, the pressure rod 8 may be pressed down excessively due to the soft ground surface, causing downward squeezing of the pipeline surface, which may easily cause pits on the top surface of the pipeline or squeeze damage. Therefore, in order to solve this problem, Figure 26-27 As shown, the middle part of the pressure rod 8 is provided with a gradual surface structure. After the pressure rod 8 is inserted into the symmetrical sleeve 71, the thickness (radius) of the gradual surface structure at the contact position with the pipe surface is gradually increased by rotating the pressure rod 8, and then Fig. 27 The vertical arrow shown in the figure presses the pipeline downward and drives the pipeline downward to gradually become a horizontal straight line state, and further preferably as shown in the figure Figure 24-25 As shown, a locking screw 9 is provided on the sleeve 71. When the pressure rod 8 is rotated and the pipe is pressed to a horizontal state, the locking screw 9 is rotated to contact the surface of the pressure rod 8, thereby limiting the self-rotation of the pressure rod 8 and ensuring that the pressure on the pipe is in a stable state. Combined with the above-mentioned limitation of the horizontal radial deflection of the pipe by the support block 5, the pipe is adjusted to a horizontal and straight state to avoid the problem of water accumulation in the pipe caused by the bottom of the pipe.

[0066] S4. After the well body 1, pipe connector 2 and multiple finished pipes 3 have passed the water-tightness test, the ditch is backfilled. During the water-tightness test of the pipeline, an appearance inspection should be carried out. There should be no water leakage. When it meets the relevant regulations, the water-tightness test of the pipeline is qualified and backfilling is carried out. When backfilling, medium sand is used for backfilling. The sides of the pipeline and the top of the pipe are manually layered below 500mm. The above is mechanically backfilled to the roadbed. The thickness of each layer of backfill meets the requirements of the specification. When manually backfilling, the support block 5 and the π-shaped frame are promptly removed for reuse.

[0067] The principle of the present invention is: to construct an inspection well and a pipe network through the well body 1 disclosed in the present invention, during the specific operation, first hoist the well body 1 to the designed position in the construction ditch, and for the placement of the well body 1, a 300mm thick 3:7 ash soil cushion layer is set in the ditch, and after completion, a 100mm concrete cushion layer is set, and after the well body 1 is hoisted, the reserved hole position and elevation are fine-tuned to the well body 1 to ensure that there is no reverse slope after the subsequent finished pipe 3 is connected, so as to ensure smooth drainage.

[0068] Then the finished pipe 3 is sealed and connected to the pipe connectors 2 on both sides of the well body 1. During the connection process, a sealing and waterproof heat shrink sleeve and two sealing rings are put into the finished pipe 3 in advance, and then the sealing rings are installed at the sockets of the pipe connector 2 at a spacing of 150-200mm. Finally, after the sealing rings are installed, the sealing and waterproof heat shrink sleeves are used to seal the sockets.

[0069] Then, several finished pipes 3 are connected in sequence to the outer ends of the finished pipes 3, and at the same time, the support blocks 5 and the π-shaped frame are used to adjust and limit the pipes to ensure the straightness of the pipes.

[0070] After the well body 1, the pipe connector 2 and the plurality of finished pipes 3 have passed the water-tightness test, the ditch is backfilled, and during the backfilling, the support blocks 5 and the π-shaped frame are promptly taken out for reuse.

[0071] The above shows and describes the basic principle, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention claimed.

Claims

1. A prefabricated concrete inspection well, comprising a well body, characterized in that: A pipe connector which is an integral structure with the well body is arranged on the well body, and an auxiliary support mechanism which assists the pipe connector to bend in a non-breaking manner is arranged at the connection position between the well body and the pipe connector.

2. The prefabricated inspection well according to claim 1 is characterized in that: The pipe connector is prefabricated as a whole when the well body is formed.

3. The prefabricated inspection well according to claim 2 is characterized in that: The pipe connector symmetrically extends from both side walls of the well body. The pipe connector is an integral pipe structure that penetrates the well body. An opening that penetrates the well body is provided on the upper side of the pipe connector located inside the well body.

4. The prefabricated inspection well according to claim 3 is characterized in that: The auxiliary support mechanism covers the overlapping portion between the pipe connector and the side wall of the well body, and the covering width is greater than the thickness of the side wall of the well body.

5. The prefabricated inspection well according to claim 4 is characterized in that: The auxiliary support mechanism includes an auxiliary pipe body wrapped around the outer wall of the pipe connector and integrally formed with the well body, the auxiliary pipe body having a fixed section that is wider than the well body side wall and wraps the pipe connector, and a deformable bending section extending from the outer end of the fixed section.

6. A method for constructing a prefabricated concrete inspection well and a corrugated drainage network, characterized in that: The following steps are involved: S1. Hoist the well body with the integrally formed pipe connector to the designed position in the construction ditch; S2, sealingly connecting the finished pipe to the pipe connectors on both sides of the well body; S3, connecting several finished pipes in sequence at the outer end of the finished pipe; S4. After the well body, pipe connectors and several finished pipes have passed the water-tightness test, the ditch is backfilled.

7. The construction method according to claim 6, characterized in that: In the process of connecting the finished pipes to the pipe connectors and the finished pipes to the finished pipes in steps S2-S3, an adjusting and fixing component for adjusting the positions of the finished pipes is provided.

8. The construction method according to claim 7, characterized in that: The adjusting and fixing component comprises a support block which is supported at a distance and fits the bottom of the finished pipe.

9. The construction method according to claim 8, characterized in that: The adjusting and fixing component also includes a π-shaped frame body for limiting the upward movement of the horizontal tube.

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