Permanent plugging structure for end of HDPE (high-density polyethylene) drainage pipeline

Abstract

The permanent plugging structure for the end of the HDPE drainage pipeline comprises the HDPE pipeline, a steel bar is sleeved outside the HDPE pipeline, a cap type reinforced concrete plug is arranged at the front end of the HDPE pipeline, backfill cement soil is arranged at the rear end of the HDPE pipeline, and a reinforced concrete soil retaining ring is arranged on the periphery of the HDPE pipeline between the cap type reinforced concrete plug and the backfill cement soil. The gap of 20 mm is reserved between the cap type reinforced concrete plug and the end of the HDPE pipeline so as to adapt to extrusion of the HDPE pipeline under the action of lateral pressure after earthwork is backfilled on the plug side; the elastic sealing ring is used for water stop treatment between the side wall of the cap type reinforced concrete plug and the HDPE pipeline; the reinforced concrete soil retaining ring and 5% of cement soil backfill behind the soil retaining ring are used for balancing the side soil pressure effect after the plug side backfill earthwork.

Description

Technical Field

[0001] The utility model belongs to the field of construction, and in particular relates to a permanent blocking measure for an end of an HDPE drainage pipe. Background Art

[0002] Currently, during municipal road construction, HDPE pipelines often need to be permanently sealed after being temporarily cut off due to design changes. There is no permanent sealing structure designed specifically for this situation in the existing technology. Utility Model Content

[0003] The utility model aims to provide a permanent blocking structure for an end of a HDPE drainage pipe.

[0004] The technical solution of the utility model is specifically as follows:

[0005] A permanent sealing structure for the end of an HDPE drainage pipe comprises an HDPE pipe, wherein the HDPE pipe is sheathed with steel bars, a cap-type reinforced concrete plug is provided at the front end of the HDPE pipe, backfill cement soil is provided at the rear end of the HDPE pipe, and a reinforced concrete retaining ring is provided on the periphery of the HDPE pipe between the cap-type reinforced concrete plug and the backfill cement soil.

[0006] An elastic sealing ring is provided between the cap-type reinforced concrete plug and the front end of the HDPE pipe.

[0007] A gap is provided between the cap-type reinforced concrete plug and the HDPE pipe.

[0008] The beneficial effects of the present invention are as follows: the present invention adopts a cap-type reinforced concrete plug and leaves a 20mm gap between the end of the HDPE pipe to adapt to the squeezing of the HDPE pipe under the pressure of the backfill earth on the plug side; the elastic sealing ring is used for water-stopping treatment between the side wall of the cap-type reinforced concrete plug and the HDPE pipe; the reinforced concrete retaining ring and the 5% cement soil backfill behind the retaining ring are used to balance the soil pressure behind the backfill earth on the plug side. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a cross-sectional view of this embodiment;

[0010] Figure 2 It is a side view of this embodiment. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0012] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0013] As shown in Figure 1 , Figure 2 HDPE drainage pipeline end permanent plugging structure, including HDPE pipeline 7, the HDPE pipeline 7 is sleeved with steel bar 3, the front end of HDPE pipeline 7 is provided with cap type reinforced concrete plug 1, the rear end of HDPE pipeline 7 is provided with backfill cement soil 5, the periphery of HDPE pipeline 7 between cap type reinforced concrete plug 1 and backfill cement soil 5 is provided with reinforced concrete soil retaining ring 4, the reinforced concrete soil retaining ring 4 and backfill cement soil 5 are used for balancing the side soil pressure effect of backfill earthwork on the side of plug.

[0014] Further, an elastic sealing ring 2 is arranged between the cap type reinforced concrete plug 1 and the front end of the HDPE pipeline 7, and the elastic sealing ring 2 is used for water stop treatment between the side wall of the cap type reinforced concrete plug 1 and the HDPE pipeline.

[0015] Further, a gap 6 is arranged between the cap type reinforced concrete plug 1 and the HDPE pipeline 7, and the gap 6 is about 20mm, so as to adapt to extruding the HDPE pipeline 7 under the pressure effect of backfill earthwork on the side of plug.

[0016] The HDPE drainage pipeline end permanent plugging measure can be implemented according to the following steps:

[0017] Step one: two elastic sealing rings 2 are arranged at the end of HDPE pipeline, the HDPE pipeline 7 is sleeved with steel bar 3, and other temporary hole ring ribs are cleaned;

[0018] Step two: pouring the cap type reinforced concrete plug 1 and the reinforced concrete soil retaining ring 4, both of which are integrally poured; the cap type reinforced concrete plug 1 is left with a gap 6 of 20 mm from the end of the HDPE pipeline 7, so as to avoid extrusion of the HDPE pipeline 7 under the lateral pressure of the backfill soil on the side of the plug;

[0019] Step three: after the reinforced concrete of the cap type reinforced concrete plug 1 and the reinforced concrete soil retaining ring 4 reaches the design strength, backfilling the cement soil 5 along the pipeline axis;

[0020] Step four: backfilling the soil on the outside of the cap type reinforced concrete plug 1.

[0021] The above only describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the overall concept of the present application, a number of changes and improvements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A permanent sealing structure for the end of an HDPE drainage pipe, characterized by: The invention comprises an HDPE pipe (7), wherein the HDPE pipe (7) is covered with steel bars (3), a cap-type reinforced concrete plug (1) is provided at the front end of the HDPE pipe (7), backfill cement soil (5) is provided at the rear end of the HDPE pipe (7), and a reinforced concrete retaining ring (4) is provided on the periphery of the HDPE pipe (7) between the cap-type reinforced concrete plug (1) and the backfill cement soil (5).

2. The permanent sealing structure for the end of an HDPE drainage pipe according to claim 1, characterized in that: An elastic sealing ring (2) is provided between the cap-type reinforced concrete plug (1) and the front end of the HDPE pipe (7).

3. The permanent sealing structure for the end of an HDPE drainage pipe according to claim 1, characterized in that: A gap (6) is provided between the cap-type reinforced concrete plug (1) and the HDPE pipe (7).

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