Drainage conduit interface structure and conduit construction method

Abstract

The application discloses a drainage pipeline interface structure and a pipeline construction method. The drainage pipeline interface structure comprises a plug pipe body, a socket pipe body and a joint filling material layer. One end of the plug pipe body is provided with a plug, one end of the socket pipe body is provided with a socket, the plug is inserted into the socket, an insertion gap is formed between the plug and the socket, the joint filling material layer is filled in the insertion gap, the insertion gap comprises an outer radial zone, an axial zone and an inner radial zone which are sequentially distributed along an axial direction, a rubber ring and a steel wire double-twisted coil are arranged between the plug and the socket, the rubber ring and the steel wire double-twisted coil are both located in the axial zone of the insertion gap, the rubber ring and the steel wire double-twisted coil are axially staggered, and the rubber ring is subjected to a pre-pressing action. The steel wire double-twisted coil abuts against the outer peripheral wall of the plug and the inner peripheral wall of the socket. The double-twisted steel wire coil can bear the axial force between the adjacent pipelines, and is beneficial to the protection of the joint filling material layer and the rubber layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of municipal drainage pipeline construction, in particular to a drainage pipeline interface structure and a pipeline construction method. BACKGROUND

[0002] The reinforced concrete pipe is a common pipe material in municipal drainage pipeline engineering. At present, the conventional method for the interface construction of the reinforced concrete pipeline is rubber ring plus cement mortar caulking. Since the municipal drainage pipeline is mostly buried, different parts of the drainage pipeline are supported by the soil in different degrees during use, so that the radial force between adjacent pipelines is inevitable. The radial force between adjacent pipelines is transmitted through the rubber ring and the cement mortar caulking. Under the long-term action of the radial pressure, the rubber ring is prone to deformation and the cement mortar caulking is prone to damage under pressure, thereby adversely affecting the use function of the rubber ring and the cement mortar caulking. SUMMARY

[0003] In order to reduce the deformation of the rubber ring under pressure and the damage of the mortar caulking under pressure at the interface of the reinforced concrete pipeline, the present application provides a drainage pipeline interface structure and a pipeline construction method.

[0004] The drainage pipeline interface structure and the pipeline construction method provided by the present application adopt the following technical scheme:

[0005] The drainage pipeline interface structure comprises a plug pipe body, a socket pipe body and a joint filling material layer. One end of the plug pipe body is provided with a plug, one end of the socket pipe body is provided with a socket, the plug is inserted into the socket, an insertion gap is formed between the plug and the socket, the joint filling material layer fills the insertion gap, the insertion gap comprises an outer radial zone, an axial zone and an inner radial zone which are sequentially distributed along the axial direction, a rubber ring and a steel wire double coil are arranged between the plug and the socket, the rubber ring and the steel wire double coil are located in the axial zone of the insertion gap, the rubber ring and the steel wire double coil are arranged in axial displacement between each other along the axial zone, and the rubber ring is subjected to pre-pressure. The steel wire double coil abuts against the outer peripheral wall of the plug and the inner peripheral wall of the socket respectively, and the joint filling material layer wraps the rubber ring and the steel wire double coil at the same time.

[0006] By adopting the technical scheme, the plug pipe body and the socket pipe body are connected through the plug and the socket, the plug and the socket are sealed by the rubber ring and the gap filling material layer, the rubber ring is tightly attached to the inner wall of the gap by the pre-pressing, and the rubber ring seals the gap. The rubber ring and the steel wire double coil are located in the axial direction of the gap, and when the plug pipe body and the socket pipe body are displaced in the radial direction, the steel wire double coil bears the radial pressure from the plug pipe body and the socket pipe body, and the rubber ring and the gap filling material layer are protected, so that the rubber ring and the gap filling material layer are less likely to be deformed and damaged. On the other hand, the steel wire double coil has a spiral gap between the two inner walls of the gap, so that the gap filling material of the gap filling material layer can contact the end surface of the rubber ring after passing through the steel wire double coil, and the gap filling material is as dense as possible, so that the waterproof effect of the gap filling material layer is ensured.

[0007] Optionally, the steel wire double coil has two steel wires, the diameters of the two steel wires are equal, and one steel wire end at one end of the steel wire double coil and one steel wire end at the other end of the steel wire double coil are twisted to form a twisted connection part.

[0008] By adopting the technical scheme, the two ends of the steel wire double coil are connected by the two steel wire ends, the steel wire double coil can tightly hold the plug, and the steel wire double coil is less likely to be scraped by the socket during the plug and socket connection, so that the plug can be smoothly inserted into the socket.

[0009] Optionally, the two ends of the steel wire are bent to form a ring segment, and the center line direction of the ring segment is arranged in the radial direction of the plug.

[0010] By adopting the technical scheme, the two ends of the steel wire are bent to form a ring segment, and the ring segment at the end of the steel wire is less likely to be scraped by the inner wall of the socket when the plug is inserted into the socket, so that the plug can be smoothly inserted into the socket.

[0011] Optionally, two steel wire double coils are arranged, the two steel wire double coils are arranged on the two sides of the rubber ring respectively, and the two steel wire double coils abut against the rubber ring respectively.

[0012] By adopting the technical scheme, the two steel wire double coils are arranged on the two sides of the rubber ring respectively and abut against the rubber ring respectively, the two steel wire double coils jointly position the rubber ring in the axial direction, so that the rubber ring is less likely to be displaced and deformed in the axial direction under the friction of the socket during the plug and socket connection, and the rubber ring can be kept in the predetermined installation position.

[0013] Optionally, a joint inner sealing layer is further included, one side of the joint inner sealing layer overlaps the inner circumferential wall of the spigot pipe body, the other side of the joint inner sealing layer overlaps the inner circumferential wall of the socket pipe body, the joint inner sealing layer closes the opening of the joint gap inward, and the joint inner sealing layer comprises a polypropylene grid layer, a cement mortar layer and a cement-based capillary crystalline layer which are sequentially laid, and the polypropylene grid layer is bonded to the joint filling material layer.

[0014] By adopting the above technical scheme, the joint inner sealing layer covers the opening of the joint gap inward, and the joint inner sealing layer protects the joint filling material layer. The polypropylene grid layer can make the joint inner sealing layer have greater integrity and reduce the cracking of the joint inner sealing layer.

[0015] Optionally, the inner walls of the spigot pipe body and the socket pipe body are each provided with a slit which is opened along the circumferential direction of the inner wall, the edge of one side of the polypropylene grid layer extends into the slit of the spigot pipe body, the edge of the other side of the polypropylene grid layer extends into the slit of the socket pipe body, and the cement mortar layer covers the two slits.

[0016] By adopting the above technical scheme, the two opposite sides of the polypropylene grid layer are respectively embedded in the corresponding slits, so that the polypropylene grid layer is stably connected with the spigot pipe body and the socket pipe body, respectively.

[0017] Optionally, a water-swelling sealing strip is embedded in the slit, and the water-swelling sealing strip is used to force the edge part of the polypropylene grid layer to abut against the inner side wall of the slit.

[0018] By adopting the above technical scheme, the water-swelling sealing strip is embedded in the inner side of the slit, and the water-swelling sealing strip swells when it is immersed in water, so that the edge part of the polypropylene grid layer is pressed against the inner wall of the slit, and the connection between the polypropylene grid layer and the spigot pipe body or the socket pipe body is more stable, which is beneficial to reducing the situation that the water flow washes and peels off the polypropylene grid layer.

[0019] A pipeline construction method comprises the following steps:

[0020] Trench excavation;

[0021] Pipeline installation, the pipeline is hoisted into the trench by hoisting equipment, one end of each pipeline has a spigot, the other end has a socket, when two pipelines are connected, the spigot of the pipeline hoisted into the trench later is inserted into the socket of the pipeline hoisted into the trench earlier, and a pipeline joint structure is formed between the two adjacent pipelines, and the pipeline joint structure between the two pipelines is connected by using any of the above drainage pipeline joint structures.

[0022] By adopting the technical scheme, the steel wire double-twisted coil in the insertion gap between the socket and the plug supports the two pipelines, and the position of the socket and the plug along the radial direction is relatively stable.

[0023] Optionally, in the pipeline installation step, before connecting the two adjacent pipelines, the socket of the pipeline hoisted into the trench first and the plug of the pipeline hoisted into the trench later are cleaned and then wetted by using the wetting device; the wetting device comprises a flexible ring groove, an outer clamping member and an inner supporting member; the flexible ring groove is provided with a water inlet; the annular side wall with a smaller diameter of the flexible ring groove is defined as an inner annular wall, and the annular side wall with a larger diameter of the flexible ring groove is defined as an outer annular wall; the inner annular wall is used for abutting against the inner circumferential wall of the pipeline, and the outer annular wall is used for abutting against the outer circumferential wall of the pipeline; the outer clamping member is used for forcing the outer annular wall to abut against the outer circumferential wall of the pipeline; the inner supporting member comprises an annular air bag and an annular supporting plate; the wide surface of the annular supporting plate is arranged along the radial direction of the annular supporting plate; the annular air bag is sleeved on the annular supporting plate; the annular air bag is provided with a valve core; the annular air bag is used for forcing the outer annular wall to abut against the outer circumferential wall of the pipeline; the flexible ring groove is provided with a latex drain pipe; the latex drain pipe is provided with a closing rope; and the closing rope is used for binding the latex drain pipe.

[0024] By adopting the technical scheme, when the end of the pipeline to be inserted is wetted by using the wetting device, the inner annular wall of the flexible ring groove abuts against the inner circumferential wall of the pipeline, and the outer annular wall of the flexible ring groove abuts against the outer circumferential wall of the pipeline; then the outer clamping member is used to clamp the outer annular wall of the flexible ring groove, and the inner supporting member is used to force the inner annular wall of the flexible ring groove to abut against the inner circumferential wall of the pipeline; when the inner supporting member is used, compressed air is filled into the annular air bag through the valve core; after the annular air bag is inflated, the inner annular wall of the flexible ring groove is pressed against the inner wall of the pipeline; the annular air bag is sleeved on the annular supporting plate, so that the annular air bag is difficult to expand towards the center direction, so as to force the inflated annular air bag to expand outward and press the inner annular wall of the flexible ring groove. When the wetting device is installed, water is injected into the inner side of the flexible ring groove from the water inlet; the water inlet is arranged upward during the installation of the flexible ring groove; after the water enters the flexible ring groove, a water storage space is formed between the flexible ring groove and the end of the pipeline, so that the end of the pipeline is fully wetted. During the use of the wetting device, the closing rope is tied into the latex drain pipe; after the pipeline wetting work is completed, the closing rope is untied, the water in the flexible ring groove is concentrated and discharged and collected, and the water is prevented from wetting the soil in the trench, so as to prevent the trench bottom from being muddy.

[0025] Optionally, a sponge ring is arranged in the flexible ring groove; the sponge ring surrounds the inner annular wall of the flexible ring groove; the sponge ring is provided with a circular groove; the direction of the groove opening of the circular groove is consistent with the direction of the groove opening of the flexible ring groove; and the circular groove is used for inserting the end of the pipeline.

[0026] By adopting the technical scheme, when the wetting device is installed, the end of the pipeline is inserted into the annular groove, when water enters the flexible annular groove, the sponge ring absorbs the water in the flexible annular groove to wet the end of the pipeline. By arranging the sponge ring, the end of the pipeline can be wetted without filling the flexible annular groove with water, which is beneficial to reduce the water leakage of the flexible annular groove in use.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The rubber ring and the steel wire braid are located in the axial area of the insertion gap, when the displacement tendency along the radial direction occurs between the plug pipe body and the socket pipe body, the steel wire braid bears the main radial pressure from the plug pipe body and the socket pipe body, which is beneficial to protect the rubber ring and the joint filling material layer, thereby reducing the deformation and damage of the rubber ring and the joint filling material layer.

[0029] 2. The two steel wire braids are located on the two sides of the rubber ring respectively and abut against the rubber ring, so that the two steel wire braids jointly form the axial positioning effect on the rubber ring, thereby, during the insertion of the plug and the socket, the rubber ring is not easy to displace and deform along the axial direction under the friction of the socket, which is beneficial to keep the rubber ring in the predetermined installation position. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic view of the drainage pipeline interface structure of the embodiment.

[0031] Figure 2 is Figure 1 is a partial enlarged view of A in

[0032] Figure 3 is a schematic view of the two end connecting parts of the steel wire braid of the embodiment.

[0033] Figure 4 is a flowchart of the pipeline construction method of the embodiment.

[0034] Figure 5 is a schematic view of the outer joint tool of the embodiment.

[0035] Figure 6 is a schematic view of the inner joint tool of the embodiment.

[0036] Figure 7 is a schematic view of the wetting tool of the embodiment.

[0037] EXPLANATION OF REFERENCE NUMERALS:

[0038] 1, plug pipe body; 11, plug; 12, cut joint; 2, socket pipe body; 21, socket; 3, insertion gap; 31, outer radial area; 32, axial area; 33, inner radial area; 4, joint filling material layer; 41, inner joint filling material layer; 42, outer joint filling material layer; 5, outer joint sealing layer; 6, inner joint sealing layer; 61, polypropylene mesh layer; 62, cement mortar layer; 63, cement-based permeable crystalline layer; 64, water-swelling sealing strip; 7, rubber ring; 8, steel wire double-stranded coil; 81, steel wire; 811, circular ring segment; 82, torsion hinge connection part; 9, wetting device; 91, flexible ring groove; 911, water injection port; 912, latex drain pipe; 913, inner ring wall; 914, outer ring wall; 92, outer hoop fastener; 93, inner support; 931, annular air bag; 932, annular support plate; 933, valve core; 94, closing rope; 95, sponge ring; 951, circular ring groove; 10, outer troweling tool; 101, first plate body; 1011, inner concave arc surface; 102, first holding rod; 20, inner troweling tool; 201, second plate body; 2011, outer convex arc surface; 202, second holding rod. DETAILED DESCRIPTION

[0039] The following description will be made in conjunction with the accompanying drawings. Figures 1-7 The present application is further described in detail.

[0040] The present application discloses a drainage pipe interface structure. Referring to Figure 1 The drainage pipe interface structure comprises a plug pipe body 1, a socket pipe body 2, a joint filling material layer 4, an outer joint sealing layer 5, and an inner joint sealing layer 6. One end of the plug pipe body 1 is provided with a plug 11, and one end of the socket pipe body 2 is provided with a socket 21. The plug 11 is inserted into the socket 21, and an insertion gap 3 is formed between the plug 11 and the socket 21. The joint filling material layer 4 fills the insertion gap 3. The insertion gap 3 comprises an outer radial area 31, an axial area 32, and an inner radial area 33 arranged in sequence along the axial direction. The cross section of the insertion gap 3 is in a Z-shaped structure as a whole. The outer joint sealing layer 5 seals the opening of the insertion gap 3 outward, and the inner joint sealing layer 6 seals the opening of the insertion gap 3 inward.

[0041] The plug pipe body 1 and the socket pipe body 2 are connected through the insertion of the plug 11 into the socket 21. The insertion gap 3 between the plug 11 and the socket 21 is sealed by the joint filling material layer 4 and the rubber ring 7. The outer joint sealing layer 5 can protect the joint filling material layer 4 from the erosion of underground water from the outside of the drainage pipe interface structure, and the inner joint sealing layer 6 can protect the joint filling material layer 4 from the erosion of water in the drainage pipe from the inside of the drainage pipe interface structure.

[0042] Referring to Figure 1The plug 11 and the socket 21 are provided with a rubber ring 7 and a steel wire double-stranded coil 8, the rubber ring 7 and the steel wire double-stranded coil 8 are located in the axial area 32 of the plug-socket gap 3, the rubber ring 7 and the steel wire double-stranded coil 8 are axially staggered, two steel wire double-stranded coils 8 are located on the two sides of the rubber ring 7, the two steel wire double-stranded coils 8 abut the two annular end faces of the rubber ring 7, and the rubber ring 7 is subjected to pre-pressing.

[0043] When the plug pipe body 1 and the socket pipe body 2 have a radial dislocation tendency due to soil settlement and the like, the steel wire double-stranded coil 8 can hinder the radial dislocation between the plug pipe body 1 and the socket pipe body 2, so as to protect the rubber ring 7 and the joint filling material layer 4, and facilitate the sealing of the plug-socket gap 3 by the joint filling material layer 4 and the rubber ring 7.

[0044] Referring to Figure 1 , the joint filling material layer 4 includes an inner joint filling material layer 41 and an outer joint filling material layer 42, the inner joint filling material layer 41 and the outer joint filling material layer 42 are located on the two sides of the rubber ring 7, one steel wire double-stranded coil 8 is wrapped around the inner joint filling material layer 41, and the other is wrapped around the outer joint filling material layer 42.

[0045] Referring to Figure 1 and Figure 2 , the steel wire double-stranded coil 8 has two steel wires 81, the diameters of the two steel wires 81 are equal, one end of the steel wire double-stranded coil 8 is twisted with the other end to form a twisted connection part 82, so that the steel wire double-stranded coil 8 tightly holds the plug 11 of the plug pipe body 1, and the two steel wires 81 form an axial positioning effect between the rubber ring 7 and the plug 11, so that the rubber ring 7 is not easily deformed and axially displaced under the friction of the socket 21 when the plug 11 is inserted into the socket 21, and the rubber ring 7 is facilitated to be kept in a predetermined installation position, thereby facilitating the sealing of the rubber ring 7.

[0046] Referring to Figure 2 , the two ends of each steel wire 81 are bent to form a circular segment 811, and the center line of the circular segment 811 is arranged along the radial direction of the plug 11, so that the circular segment 811 at the end of the steel wire 81 is not easily scraped when it contacts the inner circumferential wall of the socket 21 during the insertion of the plug 11 into the socket 21, thereby facilitating the smooth insertion of the plug 11 into the socket 21.

[0047] Referring to Figure 1 , the material of the joint outer sealing layer 5 is a plastic film, one edge of the joint outer sealing layer 5 is adhered to the outer circumferential wall of the plug pipe body 1, and the other edge of the joint outer sealing layer 5 is adhered to the outer circumferential wall of the socket pipe body 2.

[0048] The inner sealing layer 6 of the joint comprises a polypropylene mesh layer 61, a cement mortar layer 62 and a cement-based permeable crystalline layer 63 laid in turn, and the polypropylene mesh layer 61 is bonded with the joint filling material layer 4. One side of the inner sealing layer 6 overlaps the inner circumferential wall of the spigot pipe body 1, and the other side of the inner sealing layer 6 overlaps the inner circumferential wall of the socket pipe body 2.

[0049] Referring to Figure 1 and Figure 2 , the inner walls of the spigot pipe body 1 and the socket pipe body 2 are each provided with a slit 12 formed along the circumferential direction of the inner wall, the edges of one side of the polypropylene mesh layer 61 extend into the slit 12 of the spigot pipe body 1, and the edges of the other side of the polypropylene mesh layer 61 extend into the slit 12 of the socket pipe body 2. A water-swelling sealing strip 64 is embedded in the slit 12, and the cement mortar layer 62 covers the two slits 12. The water-swelling sealing strip 64 can swell by absorbing water, so that the water-swelling sealing strip 64 can press the edge portions of the polypropylene mesh layer 61 against the inner side walls of the slits 12, thereby making the connection between the polypropylene mesh layer 61 and the spigot pipe body 1 and the socket pipe body 2 more stable.

[0050] The implementation principle of the drainage pipe interface structure of the embodiment is that the spigot pipe body 1 and the socket pipe body 2 are connected by the spigot 11 and the socket 21. When the spigot pipe body 1 and the socket pipe body 2 have a tendency to displace in the radial direction, the steel wire double coil 8 bears the main radial pressure from the spigot pipe body 1 and the socket pipe body 2, which is conducive to protecting the rubber ring 7 and the joint filling material layer 4, thereby reducing the deformation and damage of the rubber ring 7 and the joint filling material layer 4. On the other hand, since the steel wire double coil 8 has a spiral gap between the two inner walls of the spigot joint gap 3, the joint filling material of the joint filling material layer 4 can contact the end face of the rubber ring 7 after passing through the steel wire double coil 8, so that the joint filling material is as dense as possible, thereby being conducive to protecting the waterproof function of the joint filling material layer 4.

[0051] The embodiment also discloses a pipe construction method, referring to Figure 4 , comprising the following steps:

[0052] Step 1: construction of a line, the position of the starting point inspection well of the rainwater and sewage pipe is taken as the pipe position control point to determine the position of the pipeline;

[0053] Step 2: trench excavation, the trench excavation is performed in two layers, and the slope coefficient is 1:0.33;

[0054] Step 3: pipe installation, one end of each pipe to be installed has a spigot 11, and the other end has a socket 21, and the above drainage pipe interface structure is used to connect between two adjacent pipes;

[0055] Step 31: When the pipe is lowered, the rubber ring 7 and the steel wire braid ring 8 are pre-installed at the plug 11; the pipe is lifted into the trench by a crane, and among the two pipes to be connected, the pipe lifted into the trench first is defined as the socket pipe body 2, and the pipe lifted into the trench later is defined as the plug pipe body 1, the socket 21 of the socket pipe body 2 and the plug 11 of the plug pipe body 1 are cleaned;

[0056] Step 32: Interface processing of the socket 21 and the plug 11, before pipe connection, the socket 21 of the socket pipe body 2 and the plug 11 of the plug pipe body 1 are cleaned, the plug 11 and the socket 21 of the pipe are wetted by the wetting device 9, and then the 1:2.5 micro-expansion cement mortar mixed with 107 glue is applied to the lower half of the socket 21 and the upper half of the plug 11;

[0057] Step 33: Socket 21 and plug 11 insertion, when the two pipes are connected, the plug 11 of the pipe lifted into the trench later is inserted into the socket 21 of the pipe lifted into the trench first, and the insertion gap 3 is formed between the plug 11 and the socket 21;

[0058] Step 34: Find the outward opening and inward opening of the insertion gap 3, clean and brush the cement mortar for three times, and the weight ratio of cement to water of the cement mortar is 1:1;

[0059] Step 35: Configure the cement mortar joint filling material, use the inner trowel tool 20 to fill the joint filling material from the inside of the pipe into the insertion gap 3 in two layers to form the inner joint filling material layer 41;

[0060] Step 36: Construction of the joint inner sealing layer 6, when the joint inner sealing layer 6 is constructed, a layer of ring-shaped adhesive is first applied, then the polypropylene grid layer 61 is laid, and immediately after the polypropylene grid is laid, the cement mortar banding layer 62 is constructed; after the construction of the cement mortar banding layer 62 for 10 minutes, two coats of cement-based penetrating crystalline are applied on the surface of the banding layer, and the interval between the two coats is 5-10 hours;

[0061] Step S37: Construction of the joint outer sealing layer 5: use the outer trowel tool 10 to fill the joint filling material from the outside of the pipe into the insertion gap 3 in two layers to form the outer joint filling material layer 42, and finally lay the plastic film to form the joint outer sealing layer 5;

[0062] Step 4: Inspection well masonry;

[0063] Step 5: Pipe closed water test;

[0064] Step 6: Trench backfilling.

[0065] Reference Figure 5The outer caulking tool 10 used in the pipeline installation step includes a first plate body 101 and a first holding rod 102, the first holding rod 102 is vertically fixed to the thickness surface of one side of the first plate body 101, and the side of the first plate body 101 away from the first holding rod 102 is provided with an inner concave curved surface 1011 for extruding the caulking material of the outer caulking material layer 42. When the outer caulking tool 10 is used, the caulking material in the insertion gap 3 can be compacted by applying a knocking force or a pressure to the first plate body 101.

[0066] Referring to Figure 6 The inner caulking tool 20 includes a second plate body 201 and a second holding rod 202, the second holding rod 202 is vertically fixed to the thickness surface of one side of the second plate body 201, and the side of the second plate body 201 away from the second holding rod 202 is provided with an outer convex curved surface 2011 for extruding the caulking material of the inner caulking material layer 41.

[0067] Referring to Figure 7 The wetting device 9 used in the pipeline installation step includes a flexible ring groove 91, an outer clamping member 92 and an inner supporting member 93, the flexible ring groove 91 is provided with a water inlet 911, and the water inlet 911 faces upward when the flexible ring groove 91 is installed; the side of the flexible ring groove 91 away from the water inlet 911 is provided with a latex drain pipe 912, and the latex drain pipe 912 is provided with a closing rope 94 for binding the latex drain pipe 912. The material of the flexible ring groove 91 is a PVC transparent soft rubber plate, the smaller diameter annular side wall of the flexible ring groove 91 is defined as an inner annular wall 913, and the larger diameter annular side wall of the flexible ring groove 91 is defined as an outer annular wall 914, the inner annular wall 913 is used for abutting against the inner circumferential wall of the pipeline, and the outer annular wall 914 is used for abutting against the outer circumferential wall of the pipeline. The flexible ring groove 91 is provided with a sponge ring 95, the sponge ring 95 surrounds the inner annular wall 913 of the flexible ring groove 91, and the sponge ring 95 is provided with a circular ring groove 951, the groove direction of the circular ring groove 951 is consistent with the groove direction of the flexible ring groove 91, and the circular ring groove 951 is used for inserting the end of the pipeline.

[0068] The outer clamping member 92 can use nylon rope, steel wire 81 rope, elastic rope and the like, and the outer clamping member 92 tightly clamps the outer annular wall 914 to the outer circumferential wall of the pipeline in a binding manner.

[0069] The inner supporting member 93 includes an annular air bag 931 and an annular supporting plate 932, the direction of the wide surface of the annular supporting plate 932 is arranged along the radial direction of itself, and the annular air bag 931 is sleeved on the annular supporting plate 932. The cross section of the annular supporting plate 932 has two concentric circular arc long sides, and the centers of curvature of the two circular arc long sides are located on the outer side of the annular supporting plate 932. The cross section of the annular supporting plate 932 has two concentric circular arc long sides. The annular air bag 931 is provided with an air valve core 933, and the annular air bag 931 is used for forcing the outer annular wall 914 to abut tightly against the outer circumferential wall of the pipeline.

[0070] When the end of the pipe to be inserted is wetted by the wetting device 9, the inner ring wall 913 of the flexible ring groove 91 abuts against the inner peripheral wall of the pipe, and the outer ring wall 914 of the flexible ring groove 91 abuts against the outer peripheral wall of the pipe, then the outer hoop fastener 92 is used to hoop the outer ring wall 914 of the flexible ring groove 91, and the inner support 93 is used to force the inner ring wall 913 of the flexible ring groove 91 to abut tightly against the inner peripheral wall of the pipe; when the inner support 93 is used, compressed air is filled into the annular air bag 931 through the valve core 933, and the annular air bag 931 is expanded to press the inner ring wall 913 of the flexible ring groove 91 tightly against the inner wall of the pipe.

[0071] When the wetting device 9 is installed, water is injected from the water injection port 911 into the inner side of the flexible ring groove 91, and after the water enters the flexible ring groove 91, a water storage space is formed between the flexible ring groove 91 and the end of the pipe, and the sponge ring 95 absorbs the water in the flexible ring groove 91, and the water absorbed by the sponge ring 95 can wet the end of the pipe.

[0072] During the use of the wetting device 9, the closing rope 94 is tied into the latex drain pipe 912, and when the pipe wetting work is completed, the closing rope 94 is untied, the water in the flexible ring groove 91 is concentrated and discharged and collected, and the water wetting of the trench soil is reduced, and the muddy condition of the bottom of the trench is caused.

[0073] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A pipeline construction method, characterized by: Includes the following steps: Trench excavation; Pipe installation: The pipes are hoisted into the trench using hoisting equipment. Each pipe has a plug (11) at one end and a socket (21) at the other end. When two pipes are connected, the plug (11) of the pipe hoisted into the trench later is inserted into the socket (21) of the pipe hoisted into the trench earlier. A pipe interface structure is formed between two adjacent pipes. The pipe interface structure between the two pipes is connected using a drainage pipe interface structure. The drainage pipe interface structure includes a plug body (1), a socket body (2), and a sealant layer (4). One end of the plug body (1) has a plug (11), and one end of the socket body (2) has a socket (21). The plug (11) is inserted into the socket (21), and a joint gap (3) is formed between the plug (11) and the socket (21). The sealant layer (4) fills the joint gap (3). The joint gap (3) includes an outer radial region (31), an axial region (32), and an inner radial region (33) distributed sequentially along the axial direction. The plug body is characterized in that: (11) A rubber ring (7) and a steel wire twisted coil (8) are provided between the connector (21) and the connector. The rubber ring (7) and the steel wire twisted coil (8) are both located in the axial region (32) of the insertion gap (3). The rubber ring (7) and the steel wire twisted coil (8) are axially offset along the axial region (32). The rubber ring (7) is subjected to pre-compression. The steel wire twisted coil (8) abuts against the outer peripheral wall of the plug (11) and the inner peripheral wall of the connector (21) respectively. The sealant layer (4) simultaneously wraps the rubber ring (7) and the steel wire twisted coil (8). In the pipeline installation process, before connecting two adjacent pipelines, the connector (21) of the pipeline hoisted into the trench first and the connector (11) of the pipeline hoisted into the trench later are cleaned and then moistened using a wetting device (9); the wetting device (9) includes a flexible annular groove (91), an outer clamping member (92), and an inner support member (93). The flexible annular groove (91) is provided with a water inlet (911). The smaller diameter annular sidewall of the flexible annular groove (91) is defined as the inner annular wall (913), and the larger diameter annular sidewall of the flexible annular groove (91) is defined as the outer annular wall (914). The inner annular wall (913) is used to abut against the inner circumferential wall of the pipeline, and the outer annular wall (914) is used to abut against the outer circumferential wall of the pipeline; the outer clamping member (913) is used to abut against the inner circumferential wall of the pipeline. 92) Used to force the outer ring wall (914) to press against the outer peripheral wall of the pipe; the inner support (93) includes an annular air bag (931) and an annular support plate (932), the wide side of the annular support plate (932) is arranged radially, the annular air bag (931) is sleeved on the annular support plate (932), the annular air bag (931) is provided with a valve core (933), the annular air bag (931) is used to force the outer ring wall (914) to press against the outer peripheral wall of the pipe; the flexible annular groove (91) is provided with a latex drain pipe (912), the latex drain pipe (912) is provided with a drawstring (94), the drawstring (94) is used to tie the latex drain pipe (912).

2. The pipeline construction method according to claim 1, characterized in that: The flexible annular groove (91) is provided with a sponge ring (95), which surrounds the inner annular wall (913) of the flexible annular groove (91). The sponge ring (95) is provided with a circular groove (951), and the groove opening direction of the circular groove (951) is consistent with the groove opening direction of the flexible annular groove (91). The circular groove (951) is for the end of the pipe to be inserted.

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