CN115627823B - Municipal road drainage pipeline buried construction method - Google Patents
Municipal road drainage pipeline buried construction method Download PDFInfo
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- CN115627823B CN115627823B CN202211251931.XA CN202211251931A CN115627823B CN 115627823 B CN115627823 B CN 115627823B CN 202211251931 A CN202211251931 A CN 202211251931A CN 115627823 B CN115627823 B CN 115627823B
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- pressure
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- bearing plate
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The application discloses municipal road drainage pipeline buries facility construction method, including the following steps: s1, excavating a pipe ditch; s2, installing an auxiliary splicing frame at the bottom of the pipe ditch, wherein the auxiliary splicing frame is positioned at the splicing position of two adjacent drain pipe joints and is used for splicing the auxiliary drain pipe joints; s3, splicing the drain pipe joints by using an auxiliary splicing frame; s4, performing sealing and reinforcing treatment on the spliced part of the drainage pipe joint; s5, building a pressure-bearing frame between two adjacent auxiliary splicing frames, wherein the pressure-bearing frame is used for supporting a soil layer above the drainage pipeline; s6, repeating the steps S2-S5 until the splicing of the drain pipe joint is completed and the pressure bearing frame is built; s7, backfilling the soil layer and compacting. The present application has the effect of reducing the possibility of the drain pipe cracking due to excessive pressure.
Description
Technical Field
The application relates to the technical field of drainage pipeline construction, in particular to a municipal road drainage pipeline buried construction method.
Background
In municipal engineering construction, drainage pipelines need to be laid underground. The existing drainage pipeline is formed by splicing a plurality of concrete drainage pipe joints or a plurality of HDPE double-wall corrugated pipe joints. When the drainage pipeline needs to pass through the municipal road area, the soil layer disturbance is easy to cause due to the fact that the flow channel of the municipal road vehicle is large, the drainage pipeline is easy to crack after being subjected to external shearing force, especially the situation that water leakage and even bursting occur easily at the two ends of the drainage pipeline is avoided, and therefore follow-up maintenance cost is high and large potential safety hazards exist.
Disclosure of Invention
In order to reduce the possibility of cracking of the drainage pipeline, the application provides a municipal road drainage pipeline burying construction method.
The utility model provides a municipal road drainage pipeline buries facility construction method adopts following technical scheme:
a municipal road drainage pipeline buried construction method comprises the following steps:
s1, excavating a pipe ditch;
s2, installing an auxiliary splicing frame at the bottom of the pipe ditch, wherein the auxiliary splicing frame is positioned at the splicing position of two adjacent drain pipe joints and is used for splicing the auxiliary drain pipe joints;
s3, splicing the drain pipe joints by using an auxiliary splicing frame;
s4, performing sealing and reinforcing treatment on the spliced part of the drainage pipe joint;
s5, building a pressure-bearing frame between two adjacent auxiliary splicing frames, wherein the pressure-bearing frame is used for supporting a soil layer above the drainage pipeline;
s6, repeating the steps S2-S5 until the splicing of the drain pipe joint is completed and the pressure bearing frame is built;
s7, backfilling the soil layer and compacting.
Through adopting above-mentioned technical scheme, this application is through setting up supplementary concatenation frame in the trench, plays centering effect to the drain pipe festival on one side to conveniently splice the drain pipe festival, simultaneously, can also be to the concatenation department of drain pipe festival sealing reinforcement processing through supplementary concatenation frame, thereby improved the compressive capacity of drain pipe festival junction. And after the sealing and reinforcing treatment is completed at the spliced position of the drainage pipe joint, a pressure bearing frame is built between two adjacent auxiliary spliced frames, so that after a subsequent backfill soil layer, most of the gravity of the soil layer and the pressure generated by soil layer disturbance act on the pressure bearing frame, the possibility of cracking of the drainage joint is reduced, the subsequent maintenance cost is further reduced, and the potential safety hazard is reduced.
Preferably, the auxiliary splicing frame comprises an annular frame, an annular groove is recessed in the inner annular surface of the annular frame, a grouting hole and an exhaust hole are formed in the outer annular surface of the annular frame, and the grouting hole and the exhaust hole are communicated with the annular groove; and S4, after the two drain pipe joints are spliced through the annular frame, pouring concrete into the annular groove through the grouting holes.
Through adopting above-mentioned technical scheme, form between annular frame and the drain pipe section and pour the chamber, consequently pour the intracavity through the slip casting hole and pour the concrete, strengthened the joint strength of two adjacent drain pipe sections promptly, also strengthened the compressive capacity and the leakproofness of drain pipe section concatenation department.
Preferably, the annular frame comprises an arc-shaped underframe, the arc-shaped underframe is arranged in a semicircular way, two ends of the arc-shaped underframe are hinged with arc-shaped brackets, the two arc-shaped brackets are in locking connection through a fastener, the grouting hole is formed in any arc-shaped bracket, and the exhaust hole is formed in the other arc-shaped bracket; and S5, after pouring of concrete is completed through the grouting holes and the concrete reaches demolding strength, unlocking the fastening pieces, then rotating the arc-shaped support until one end of the arc-shaped support, which is far away from the arc-shaped underframe, faces the side wall of the pipe trench, then fixing the arc-shaped support on the soil layer at the side part of the pipe trench by utilizing the anchor rods, and then installing the pressure-bearing frame between the arc-shaped supports positioned on the two adjacent annular frames.
Through adopting above-mentioned technical scheme, on the one hand convenient drawing of patterns, on the other hand makes arc support and drain pipe section separation, and the pressure-bearing frame is between the arc support that is located adjacent two annular frames for pressure-bearing frame and drain pipe section contactless, pressure-bearing frame and annular frame and stock constitute supporting member, thereby can bear most soil layer pressure, and then make the drain pipe section difficult fracture.
Preferably, the bottom of the annular groove is provided with a flexible sealing band.
By adopting the technical scheme, on one hand, the concrete slurry cannot overflow from the gap of the annular frame in the grouting process; on the other hand, the hinge shaft between the arc-shaped bracket and the arc-shaped underframe can not be fixedly connected under the action of concrete, so that the arc-shaped bracket can be conveniently rotated subsequently.
Preferably, one end of the arc-shaped support, which is far away from the arc-shaped underframe, is fixedly connected with a connecting plate, and the side part of the connecting plate is fixedly connected with a fixing ring; and S5, after the arc-shaped support rotates in place, the anchor rod penetrates through the fixing ring and then is driven into the soil layer at the side part of the pipe trench.
Through adopting above-mentioned technical scheme, conveniently utilize the stock to fix the annular frame in the lateral soil layer of trench.
Preferably, the pressure-bearing frame comprises a first pressure-bearing plate and a second pressure-bearing plate, the first pressure-bearing plate and the second pressure-bearing plate are both connected with the connecting plate in a rotating mode, the first pressure-bearing plate and the second pressure-bearing plate are oppositely arranged, a first abutting portion is arranged on the first pressure-bearing plate, a second abutting portion is arranged on the second pressure-bearing plate, the movement track of the first pressure-bearing plate is intersected with the second abutting portion, and the movement track of the second pressure-bearing plate is intersected with the first abutting portion.
Through adopting above-mentioned technical scheme, after first bearing plate, second bearing plate all install between two adjacent connecting plates that are located the same side of trench, rotate first bearing plate and second bearing plate, until first bearing plate and second butt portion butt, second bearing plate and first butt portion butt, later backfill layer. Because the first bearing plate is propped by the second propping part and the second bearing plate is propped by the first propping part, the first bearing plate and the second bearing plate cannot continuously rotate towards opposite directions, and the first bearing plate and the second bearing plate prop up the soil layer, so that the pressure born by the drain pipe joint is remarkably relieved, and the drain pipe joint is not easy to crack due to the pressure.
Preferably, the first bearing plate is provided with a plurality of first through grooves, and the second bearing plate is provided with a plurality of second through grooves.
Through adopting above-mentioned technical scheme, when can backfill soil layer in the pipe ditch, partial earth can get into in the space between first bearing plate, second bearing plate and the pipe joint and fill up with it through first logical groove and second logical groove, and then play the effect of supporting first bearing plate and second bearing plate for first bearing plate and second bearing plate are difficult for deformation.
Preferably, in step S2, before the auxiliary mounting frame is mounted, a mounting groove is excavated at the joint of the trench bottom corresponding to the pipe section of the trench, and then the auxiliary mounting frame is placed in the mounting groove.
Through adopting above-mentioned technical scheme, the mounting groove plays limiting displacement to auxiliary mounting frame for auxiliary mounting frame is difficult for empting after installing in the trench, thereby is convenient for splice drain pipe section.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the water draining pipe joint sealing and reinforcing device, the auxiliary splicing frame is arranged, so that the water draining pipe joint can be spliced conveniently, sealing and reinforcing treatment can be carried out at the splicing position of the water draining pipe joint, the auxiliary splicing frame can also serve as a supporting foundation of the pressure bearing frame, the soil layer above the water draining pipe joint is supported, the pressure born by the water draining pipe joint is obviously reduced, and the water draining pipe joint is not prone to cracking due to overlarge pressure;
2. through with first bearing plate, second bearing plate and arc support articulated setting to set up first butt portion on first bearing plate, set up second butt portion on the second bearing plate, make first bearing plate and second bearing plate possess the auto-lock function, be favorable to improving the efficiency of construction.
Drawings
FIG. 1 is a schematic illustration of the assembly of drain pipe joints using auxiliary splice holders in the present application;
FIG. 2 is a schematic structural view of an auxiliary splice rack in the present application;
FIG. 3 is a schematic structural view of a pressure-bearing frame built on an auxiliary splicing frame in the present application;
fig. 4 is an enlarged schematic view of a in fig. 3 in the present application.
Reference numerals illustrate:
1. a pipe trench; 2. a drain pipe section; 3. an annular frame; 31. an arc-shaped underframe; 32. an arc-shaped bracket; 33. grouting holes; 34. an exhaust hole; 35. a connecting plate; 36. a fixing ring; 4. an annular groove; 5. a flexible sealing tape; 6. a bolt; 7. a first pressure-bearing plate; 71. a first connection portion; 72. a first bending part; 73. a first fixing strip; 74. a first connection ring; 8. a second pressure-bearing plate; 81. a second connecting portion; 82. a second bending part; 83. a second fixing strip; 84. a second connecting ring; 9. a first through groove; 10. a second through slot; 11. and (5) connecting a screw rod.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a municipal road drainage pipeline buried construction method. The method comprises the following steps:
s1, excavating a pipe ditch 1: and measuring and paying off on the ground according to the arrangement line of the drainage pipeline, and then excavating the pipe ditch 1.
S2, referring to FIG. 1, an auxiliary splicing frame is installed: an installation groove (not shown in the figure) is excavated at the joint of the drain pipe section 2 corresponding to the bottom of the pipe ditch 1, and then an auxiliary joint frame is placed in the installation groove. The auxiliary splicing frame is used for assisting in splicing the drain pipe joint 2. Specific:
referring to fig. 2, the auxiliary splicing frame comprises an annular frame 3, an annular groove 4 is recessed in the inner annular surface of the annular frame 3, the cross section of the annular groove 4 is in a U-shaped arrangement, a flexible sealing belt 5 matched with the cross section of the annular groove 4 in shape is embedded in the annular groove 4, and the flexible sealing belt 5 is made of rubber materials in the embodiment of the application.
The annular frame 3 comprises an arc-shaped underframe 31, the arc-shaped underframe 31 is arranged in a semicircular shape, two ends of the arc-shaped underframe 31 are hinged with arc-shaped brackets 32, and the arc-shaped brackets 32 are arranged in a quarter circular shape. The outer wall of one end, far away from the arc-shaped underframe 31, of one arc-shaped bracket 32 is provided with a grouting hole 33, and the grouting hole 33 penetrates through the flexible sealing belt 5 and is communicated with the annular groove 4; the outer wall of the end of the other arc-shaped support 32 far away from the arc-shaped underframe 31 is provided with an exhaust hole 34, and the exhaust hole 34 penetrates through the flexible sealing band 5 and is communicated with the annular groove 4. The two arc supports 32 are all welded with connecting plate 35 away from the one end of arc chassis 31, and connecting plate 35 extends towards the direction that deviates from the annular frame 3 axis, and the width of connecting plate 35 is unanimous with the width of arc support 32. Both sides of the connecting plate 35 in the width direction are welded with fixing rings 36. The two connecting plates 35 are locked and connected by fasteners, and the fasteners adopt common bolts and nuts, which are not expanded herein.
And S3, splicing the drain pipe joint 2 by using an auxiliary splicing frame. Specific: referring to fig. 1 and 2, when the drain cock is placed in the trench 1, attention is paid to adjusting the position of the drain pipe section 2 so that the end of the drain pipe section 2 is located on the arc-shaped chassis 31, and the arc-shaped chassis 31 plays a role in centering the drain pipe section 2, thereby facilitating the splicing of the drain pipe section 2. After the joint of the drain pipe joint 2 is completed, the arc-shaped bracket 32 is rotated until the two connecting plates 35 are abutted against each other, and then the two connecting plates 35 are locked by using fasteners.
S4, sealing and reinforcing treatment is carried out on the spliced position of the drain pipe joint 2 by using an auxiliary splicing frame. Specific: pouring concrete into a pouring cavity surrounded by the annular frame 3 and the drain pipe joint 2 through the grouting holes 33 by using a grouting machine, observing the pouring condition through the exhaust holes 34, and stopping grouting when the concrete overflows from the exhaust holes 34.
And S5, a pressure-bearing frame is built between two adjacent auxiliary splicing frames and is used for supporting the soil layer above the drainage pipeline. Specific:
referring to fig. 3, after the concrete has set and reached the demolding strength, the fasteners between the connection plates 35 are removed, and then the arc-shaped brackets 32 are turned so that the connection plates 35 face the soil layer on the side of the trench 1, and then the anchor rods 6 are passed through the fixing rings 36, and the anchor rods 6 are driven into the soil layer on the side of the trench 1.
The bearing frame includes first bearing plate 7 and second bearing plate 8, and first bearing plate 7, second bearing plate 8 all are the obtuse angle setting of buckling, and the angle of buckling is 120-135, preferential 135 in this application embodiment.
Referring to fig. 3, the first bearing plate 7 includes a first connection portion 71 and a first bending portion 72, one side of the first connection portion 71 away from the first bending portion 72 is fixedly connected with two first connection rings 74, the two first connection rings 74 are respectively located at two ends of the first connection portion 71, the first connection rings 74 are rotatably connected with a connection screw 11, and a threaded hole matched with the connection screw 11 is formed in a side portion of the connection plate 35. The first connecting portion 71 and the first bending portion 72 are each provided with a plurality of first through grooves 9 along their own length direction. The inner side of the first bending portion 72 near one end of the first connecting portion 71 is fixedly connected with a first abutting portion, the first abutting portion is a first fixing strip 73, and the first fixing strip 73 extends along the length direction of the first bending portion 72.
Referring to fig. 3 and 4, the second bearing plate 8 includes a second connecting portion 81 and a second bending portion 82, one side of the second connecting portion 81 away from the second bending portion 82 is fixedly connected with two second connecting rings 84, the two second connecting rings 84 are respectively located at two sides of the length direction of the second connecting portion 81, and the connection manner of the second connecting rings 84 and the connecting plate 35 is consistent with that of the first connecting ring 74 and the connecting plate 35, which will not be repeated here. The second connecting portion 81 and the second bending portion 82 are provided with a plurality of second through grooves 10 along the length direction of the second connecting portion, and the second through grooves 10 are consistent with the first through grooves 9 in shape and opening size. The second abutting portion is fixedly connected to the outer side of the second bending portion 82, which is close to one end of the second connecting portion 81. The second abutting portion is a second fixing strip 83, and the second fixing strip 83 extends along the length direction of the second bending portion 82.
The movement locus of the first bending portion 72 intersects with the movement locus of the second fixing bar 83, and the movement locus of the second bending portion 82 intersects with the movement locus of the first fixing bar 73. When the first bending portion 72 rotates to abut against the second fixing strip 83 and the second bending portion 82 rotates to abut against the first fixing strip 73, the first through groove 9 on the first bending portion 72 is communicated with the second through groove 10 on the second bending portion.
When assembling the bearing frame, the first bearing plate 7 and the second bearing plate 8 are respectively installed between two adjacent connecting plates 35 positioned on the same side of the pipe ditch 1 by using connecting bolts, so that the first bearing plate 7 and the second bearing plate 8 can both rotate relative to the connecting plates 35. Then, the first bearing plate 7 and the second bearing plate 8 are rotated until the first bending portion 72 abuts against the second fixing bar 83, and the second bending portion 82 abuts against the first fixing bar 73.
S5, repeating the steps S2-S5 until the splicing of the drain pipe joint 2 and the construction of the pressure bearing frame are completed;
s7, backfilling the soil layer and compacting.
The implementation principle of the municipal road drainage pipeline buried construction method is as follows: this application is through setting up supplementary concatenation frame, not only conveniently splices drain pipe section 2 with the help of supplementary concatenation frame, can also be in the concatenation department of drain pipe section 2 sealing reinforcement handles, and supplementary concatenation frame can also be as the supporting foundation who holds the pressure frame to play the supporting role to drain pipe section 2 top soil layer, show the pressure that reduces drain pipe section 2 and receive, make drain pipe section 2 difficult fracture because of the pressure is too big, and then reduce follow-up cost of maintenance and reduce the potential safety hazard.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (6)
1. A municipal road drainage pipeline buries facility construction method which characterized in that: the method comprises the following steps:
s1, excavating a pipe ditch (1);
s2, installing an auxiliary splicing frame at the bottom of the pipe ditch (1), wherein the auxiliary splicing frame is positioned at the splicing position of two adjacent drain pipe joints (2);
s3, splicing the drain pipe joint (2) by using an auxiliary splicing frame;
s4, performing sealing and reinforcing treatment on the spliced part of the drain pipe joint (2) by using an auxiliary splicing frame;
s5, building a pressure-bearing frame between two adjacent auxiliary splicing frames, wherein the pressure-bearing frame is used for supporting a soil layer above the drainage pipeline;
s6, repeating the steps S2-S5 until the splicing of the drain pipe joint (2) and the construction of the pressure bearing frame are completed;
s7, backfilling the soil layer and compacting;
the auxiliary splicing frame comprises an annular frame (3), an annular groove (4) is recessed in the inner annular surface of the annular frame (3), a grouting hole (33) and an exhaust hole (34) are formed in the outer annular surface of the annular frame (3), and the grouting hole (33) and the exhaust hole (34) are communicated with the annular groove (4); in the step S4, after the two drain pipe joints (2) are spliced through the annular frame (3), concrete is poured into the annular groove (4) through the grouting holes (33);
the annular frame (3) comprises an arc-shaped underframe (31), the arc-shaped underframe (31) is arranged in a semicircular shape, two ends of the arc-shaped underframe (31) are hinged with arc-shaped brackets (32), the two arc-shaped brackets (32) are in locking connection through a fastener, the grouting hole (33) is formed in any arc-shaped bracket (32), and the exhaust hole (34) is formed in the other arc-shaped bracket (32); in the S5 step, after pouring of concrete is completed through the grouting holes (33) and the concrete reaches demolding strength, the fasteners are loosened, then the arc-shaped support (32) is rotated until one end of the arc-shaped support (32) away from the arc-shaped underframe (31) faces the side wall of the pipe trench (1), then the arc-shaped support (32) is fixed on the soil layer on the side part of the pipe trench (1) by the anchor rods (6), and then the pressure-bearing frame is installed between the arc-shaped supports (32) located on the two adjacent annular frames (3).
2. The municipal road drainage pipeline burying construction method according to claim 1, wherein: the bottom of the annular groove (4) is provided with a flexible sealing band (5).
3. The municipal road drainage pipeline burying construction method according to claim 1, wherein: one end of the arc-shaped support (32) far away from the arc-shaped underframe (31) is fixedly connected with a connecting plate (35), and the side part of the connecting plate (35) is fixedly connected with a fixing ring (36); and S5, after the arc-shaped bracket (32) rotates in place, the anchor rod (6) passes through the fixing ring (36) and then the anchor rod (6) is driven into the soil layer at the side part of the pipe ditch (1).
4. A municipal road drainage pipe burying construction method according to claim 3, wherein: the pressure-bearing frame comprises a first pressure-bearing plate (7) and a second pressure-bearing plate (8), the first pressure-bearing plate (7) and the second pressure-bearing plate (8) are both connected with a connecting plate (35) in a rotating mode, the first pressure-bearing plate (7) and the second pressure-bearing plate (8) are oppositely arranged, a first abutting portion is arranged on the first pressure-bearing plate (7), a second abutting portion is arranged on the second pressure-bearing plate (8), the movement track of the first pressure-bearing plate (7) is intersected with the second abutting portion, and the movement track of the second pressure-bearing plate (8) is intersected with the first abutting portion.
5. The municipal road drainage pipeline buried construction method according to claim 4, wherein: the first bearing plate (7) is provided with a plurality of first through grooves, and the second bearing plate (8) is provided with a plurality of second through grooves.
6. The municipal road drainage pipeline burying construction method according to claim 1, wherein: in the step S2, before the auxiliary installation frame is installed, an installation groove is excavated at the joint of the groove bottom of the pipe groove (1) corresponding to the pipe joint, and then the auxiliary installation frame is placed in the installation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211251931.XA CN115627823B (en) | 2022-10-13 | 2022-10-13 | Municipal road drainage pipeline buried construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211251931.XA CN115627823B (en) | 2022-10-13 | 2022-10-13 | Municipal road drainage pipeline buried construction method |
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| Publication Number | Publication Date |
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| CN115627823A CN115627823A (en) | 2023-01-20 |
| CN115627823B true CN115627823B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211251931.XA Active CN115627823B (en) | 2022-10-13 | 2022-10-13 | Municipal road drainage pipeline buried construction method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215669961U (en) * | 2021-08-24 | 2022-01-28 | 山西临汾市政工程集团股份有限公司 | Drainage pipe interface with antiseep structure |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014109799A1 (en) * | 2014-07-11 | 2016-01-14 | Hobas Engineering Gmbh | pipe coupling |
| CN212078174U (en) * | 2020-03-31 | 2020-12-04 | 聊城市科慧市政工程设计院 | Municipal drainage pipe of easily installing |
| CN112344110A (en) * | 2020-10-20 | 2021-02-09 | 中国一冶集团有限公司 | Socket type reinforced concrete pipe joint structure and construction method |
| CN213776697U (en) * | 2020-12-08 | 2021-07-23 | 韶关市住宅建筑工程有限公司 | Municipal construction water supply and drainage pipe connection fixed knot constructs |
| CN113028139B (en) * | 2021-03-05 | 2022-04-01 | 江苏欣昌建设工程有限公司 | Combined type connector of rain and sewage pipe and construction method |
| CN113074280B (en) * | 2021-03-24 | 2022-07-29 | 广东汇晟建设有限公司 | Highway drainage pipeline installation process |
| CN113339588A (en) * | 2021-04-13 | 2021-09-03 | 张家港市永茂建筑工程有限公司 | Pipeline frame and construction method for newly-built access well of drainage pipeline using pipeline frame |
| CN114439091A (en) * | 2021-12-24 | 2022-05-06 | 广东鹏裕建设有限公司 | Laying method of rain and sewage diversion pipeline |
| CN217030444U (en) * | 2022-04-22 | 2022-07-22 | 雷彬楠 | A damaged prosthetic devices for municipal administration sewage discharge pipeline |
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2022
- 2022-10-13 CN CN202211251931.XA patent/CN115627823B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215669961U (en) * | 2021-08-24 | 2022-01-28 | 山西临汾市政工程集团股份有限公司 | Drainage pipe interface with antiseep structure |
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