Drainage port pipeline construction structure

Abstract

The utility model discloses a drainage port pipeline construction structure which comprises a retaining wall arranged in a river channel, a backfilling part and an original soil burying part adjacent to the backfilling part are arranged on the inner side of the retaining wall, a slope formed by excavation is arranged on the original soil burying part, and a current drainage pipeline is laid on the original soil burying part. The lower backfilling part arranged between the retaining wall and the original soil burying part is provided with a backfilling slope matched with the trend of the current drainage pipeline, the backfilling slope is provided with a cushion layer structure, a newly-arranged drainage pipeline in butt joint with the current drainage pipeline is laid on the cushion layer structure, and the end, away from the current drainage pipeline, of the newly-arranged drainage pipeline extends out of the retaining wall. The structure is convenient to construct, and the drainage operation cannot be affected by sedimentation after the river channel drainage port is connected with the existing drainage pipeline.

Description

Technical Field

[0001] The utility model relates to the field of municipal technology, in particular to a drainage outlet pipeline construction structure. Background Art

[0002] Common river regulation projects in the municipal field involve a wide range of areas, such as earth excavation, earth backfilling, new revetments, new flood control roads, pedestrian walkways, drainage outlet reconstruction, new guardrails, new greening, etc. The inventors found that the drainage outlet regulation involved in the river regulation project and the drainage outlet in the corresponding construction need to be connected (connected) with the existing (municipal) pipeline, and the location of the drainage outlet is also crucial to the drainage effect. If the regulation and construction of the drainage outlet are unreasonable, it will not only affect the quality of the drainage outlet and the drainage effect, but also easily cause negative impacts on the existing (municipal) pipeline. Utility Model Content

[0003] The purpose of the utility model is to provide a drainage outlet pipeline construction structure, which has high overall quality stability while meeting a good drainage effect and has no negative impact on existing municipal pipelines.

[0004] In order to solve the above technical problems, the implementation mode of the utility model provides a drainage outlet pipe construction structure, which includes a retaining wall arranged in the river channel, the inner side of the retaining wall is provided with a backfill part and an original buried part adjacent to the backfill part, the original buried part is provided with a slope formed by excavation, the original buried part is laid with an existing drainage pipe, the lower backfill part arranged between the retaining wall and the original buried part is provided with a backfill slope matching the direction of the existing drainage pipe, the backfill slope is provided with a cushion structure, the cushion structure is laid with a new drainage pipe connected with the existing drainage pipe, the new drainage pipe extends out of the retaining wall away from the end of the existing drainage pipe, and an upper backfill part is provided above the new drainage pipe.

[0005] Furthermore, the cushion structure is a concrete cushion.

[0006] Furthermore, the newly installed drainage pipe is a plastic pipe.

[0007] Furthermore, both sides of the new drainage pipe are backfilled with sand.

[0008] Furthermore, pads are provided on both sides of the new drainage pipe.

[0009] Furthermore, shock-proof sleeves are provided at the connection points between the existing drainage pipes and the newly installed drainage pipes.

[0010] Furthermore, the backfill part and the original buried part adjacent to the backfill part are connected by an inclined surface.

[0011] The utility model has the following beneficial effects: the structure is easy to construct, and no settlement will occur after the river drainage outlet is connected to the existing drainage pipe to affect the drainage operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the construction structure of the drainage outlet pipeline in the first embodiment of the utility model.

[0013] Figure 2 It is a partial cross-sectional view of an existing drainage pipe and a newly installed drainage pipe in the second embodiment of the utility model. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0015] The first embodiment of the utility model provides a drainage pipe construction structure, see Figure 1 , which includes a retaining wall 1 arranged in the river channel, the retaining wall is distributed at the edge of the river channel, and the inner side of the retaining wall ( Figure 1 The right side area of ​​the middle retaining wall) has a backfill part 2 and an original buried part 3 adjacent to the backfill part. The backfill part is a trench formed by excavation during the construction of the retaining wall and is formed by backfilling the soil. The original buried part is provided with a slope formed by excavation, which can ensure the stability of the excavated soil. The original buried part is paved with an existing drainage pipe 4. During the river channel engineering renovation process, the existing drainage pipe needs to be connected. At this time, the interface of the existing drainage pipe is generally located at the excavation slope. The lower backfill part arranged between the retaining wall and the original buried part is provided with a backfill slope matching the direction of the existing drainage pipe. The backfill slope can ensure the consistency and stability of the lower backfill soil structure. The backfill slope is provided with a cushion structure 5, such as a concrete cushion structure with a thickness of 5-20cm. The cushion structure is paved with a new drainage pipe 6 that is connected to the existing drainage pipe. The new drainage pipe is a plastic pipe. The new drainage pipe 6 extends out of the retaining wall away from the end of the existing drainage pipe, so that the outlet of the new drainage pipe can directly discharge water into the river.

[0016] It should be pointed out that the concrete cushion of the cushion structure can be a C20 concrete cushion, and the two sides of the new drainage pipe can be backfilled with sand to ensure stability, or, pads can be set on both sides of the new drainage pipe to ensure the stability of the new drainage pipe.

[0017] In addition, an upper backfill portion ( Figure 1The part above the newly installed drainage pipe is the upper backfill part, and the corresponding part below the newly installed drainage pipe is the lower backfill part). The lower backfill part and the upper backfill part here together constitute the backfill part 2. The use of inclined surface connection for the backfill part 2 and the original buried soil part 3 adjacent to the backfill part can not only avoid soil defects, but also arrange tie bars on such inclined surfaces, which can improve the stability between adjacent soils and avoid problems such as slippage.

[0018] The construction process of this utility model is as follows:

[0019] The pipeline trench has been excavated during the revetment construction, and the pipeline laying construction can be carried out directly.

[0020] (1) Construction of cushion foundation

[0021] The drainage pipes of this project are made of plastic pipes, and the cushion layer is constructed with concrete cushion layer.

[0022] (2) Pipeline laying and installation

[0023] Before installing the pipe joint, an appearance inspection should be carried out. If cracks, shedding of protective layer, hollowing, corner loss and other defects are found, they should be repaired and used only after being identified as qualified. The pipeline should be laid along the pipe axis line, laid straight, and the longitudinal gap of the pipe mouth should meet the regulations, and the inspection well should be left.

[0024] Pipe stabilization is to stabilize the pipeline on the foundation or base according to the designed elevation and plane position. The pipeline should be placed in the center of the trench, and the allowable deviation should not be greater than 100mm. The pipeline should be placed firmly in the trench, and there should be no hanging phenomenon under the pipe to prevent the pipeline from being subjected to additional stress.

[0025] The pipeline process, material and installation location should all meet the design requirements, and the material must pass the inspection.

[0026] The interface should be tight and strong, and the interface should not be forced to eliminate the additional stress of the interface. The strength test and tightness test are qualified.

[0027] When installing the pipeline, clean the inside of the pipeline and make sure the product mark of the pipeline is at the top of the pipeline. When installing, use the edge line or the center vertical line to control the center of the pipeline. The elevation of the cushion layer must be accurate to control the installation height of the pipeline and check it with a level.

[0028] The pipeline shall not be moved after installation. Sand and soil shall be evenly backfilled on both sides of the bottom of the pipe and compacted, or the pipeline shall be fixed with pads, etc. The connection method adopts rubber ring interface.

[0029] When connecting, the pipe should fit tightly and flush inside the inspection well.

[0030] The second embodiment of the present invention provides a drainage outlet pipeline construction structure, which is different from the first embodiment in that a shockproof sleeve 7 is provided at the connection position between the existing drainage pipeline 4 and the newly installed drainage pipeline 6.

[0031] See also Figure 2 The shockproof sleeve 7 is a rubber sleeve with a trapezoidal cross-section. Two reinforcing tie structures 8 are arranged in the rubber sleeve. Carbon fiber wire or steel wire can be selected according to the applicable scenario. After the rubber sleeve hugs the existing drainage pipe 4 and the newly installed drainage pipe 6, it can avoid the direct vibration influence of external vibration on the interface of the two pipelines (avoiding mutual separation and water seepage), and the shockproof sleeve can be used to protect the connection structure between the pipelines (for example, to prevent hard objects from squeezing). More importantly, the shockproof sleeve fits tightly with the pipeline, and can also play a role in plugging leaks in the event of unexpected trace water seepage, thereby preventing large amounts of water leakage from eroding the soil and causing safety accidents on site.

[0032] In addition, since this type of newly installed drainage pipe 6 is a pipe installed later, in order to avoid affecting the traditional municipal pipe, a 1.5% slope is used here to effectively avoid risks such as backflow, and a foreign body prevention net can be installed at the outlet of the newly installed drainage pipe. The outer ring of the foreign body prevention net is made of rubber sleeve, which can be effectively installed on the port of the newly installed drainage pipe. The foreign body prevention net can be installed when necessary. The foreign body prevention net can be manually removed during maintenance or when there is no need to prevent foreign objects from entering the newly installed drainage pipe. The foreign body prevention net is made of nylon wire or carbon fiber wire. Metal wires such as steel wire are prone to rust during long-term use, resulting in protection failure. During operation, a metal foreign body prevention net can also be used.

[0033] Since the newly installed drainage pipe is not installed until the lower backfill part is formed, a top fork structure can be arranged in the lower backfill part. The rod-shaped portion of the top fork structure is inserted into the lower backfill part, and the top of the top fork structure is flush with the cushion layer. In this way, multiple top fork structures arranged along the extension direction of the newly installed drainage pipe can be used to protect the newly installed pipe 6 from settlement, and the top of the top fork structure can be a flat plate or a straight horizontal rod / block to form a T-shaped top fork structure, which is suitable for the case where the line of the newly installed drainage pipe is longer.

[0034] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A drainage outlet pipeline construction structure, comprising a retaining wall arranged in a river channel, wherein the inner side of the retaining wall has a backfill portion and an original buried soil portion adjacent to the backfill portion, wherein the original buried soil portion is provided with a slope formed by excavation, and the original buried soil portion is provided with an existing drainage pipeline, characterized in that: The lower backfill part arranged between the retaining wall and the original buried part is provided with a backfill slope matching the direction of the existing drainage pipe. The backfill slope is provided with a cushion structure. The cushion structure is used to lay a new drainage pipe connected to the existing drainage pipe. The new drainage pipe extends out of the retaining wall away from the end of the existing drainage pipe. An upper backfill part is provided above the new drainage pipe.

2. The drainage outlet pipeline construction structure according to claim 1, characterized in that: The cushion structure is a concrete cushion.

3. The drainage outlet pipeline construction structure according to claim 1, characterized in that: The newly installed drainage pipe is a plastic pipe.

4. The drainage outlet pipeline construction structure according to claim 1, characterized in that: Both sides of the newly-installed drainage pipe are backfilled with sand.

5. The drainage outlet pipeline construction structure according to claim 1, characterized in that: Pads are arranged on both sides of the newly-installed drainage pipe.

6. The drainage outlet pipeline construction structure according to claim 1, characterized in that: The connection points of the existing drainage pipe and the newly installed drainage pipe are provided with shockproof sleeves.

7. The drainage outlet pipeline construction structure according to claim 1, characterized in that: The backfill part and the original buried soil part adjacent to the backfill part are connected by an inclined surface.

Images