Shaft pipeline communicating device of river-crossing section

Abstract

The utility model discloses a river-crossing section shaft pipeline communicating device which is characterized by comprising a water bottom pipeline and two end shaft bodies, the top of each end shaft body is provided with an opening, the bottom of each end shaft body is sealed, and the lower portion of the side wall of each end shaft body is provided with a pipeline connecting opening. The shape and the size of the pipeline connector are matched with those of an end opening of the underwater pipeline; the two ends of the underwater pipeline are connected with the pipeline connecting openings of the two end shaft bodies respectively. When the shaft pipeline communicating device is used for underwater pipeline construction, cofferdam construction is not needed, the construction speed is high, the cost is low, the safety is good, leakage is avoided, and the construction quality is better guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a well pipe connection device that spans a river section. Background Technology

[0002] In urban infrastructure construction, drainage pipelines crossing small spans of water (such as rivers) are a common engineering requirement. Currently, traditional underwater pipeline construction across rivers generally adopts steel cofferdams or earth-rock cofferdams. This construction method requires first building temporary cofferdams upstream and downstream of the construction area to block water flow and pump out the water accumulated inside the cofferdams, creating a dry working environment; then excavating the pipeline trench in the riverbed, laying the pipeline, and completing the connection; finally, backfilling the pipeline trench with sand and gravel to the bottom of the riverbed, dismantling the cofferdam, and cleaning up.

[0003] However, this construction method has many drawbacks. For example, when building a cofferdam, it is necessary to select a variety of materials such as sheet piles and sandbags according to the width of the river and the speed of the water flow. It also requires the investment of specialized equipment (such as pile drivers and pumps) and manpower. Moreover, the material loss rate of the cofferdam after dismantling is high, resulting in high costs. The processes of pile driving, cofferdam construction, drainage, and dismantling are time-consuming and labor-intensive, resulting in a long overall construction period. In areas with soft soil foundations or frequent water level fluctuations, the stability of the cofferdam is poor, and leakage or collapse is likely to occur, resulting in a high operational risk. The cofferdam blocks the flow of water in the river, which will directly affect the flood discharge capacity of the river during the flood season and increase the risk of flooding in the upstream and downstream areas.

[0004] Currently, some projects are also attempting to use pipe jacking or underwater welding techniques. Pipe jacking involves setting up working shafts on both sides of the river channel and using jacking equipment to push the pipe underground through the riverbed. However, it has stringent requirements for geological conditions (such as the tendency for deviations to occur in sand and gravel layers), and the pipe diameter is limited, making it unsuitable for large-diameter pipes or small-span rivers with complex terrain. Underwater welding, on the other hand, relies on manual operation by divers, is greatly affected by factors such as water flow and visibility, has lower construction safety, and the welding is unstable, making it difficult to guarantee construction quality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a well-pipeline connection device that crosses river sections. When constructing underwater pipelines, this well-pipeline connection device does not require cofferdam construction, and the construction speed is fast, the cost is low, the safety is good, there is no leakage, and the construction quality is more guaranteed.

[0006] To solve the above technical problems, the following technical solution is adopted:

[0007] A cross-river well-pipe connection device is characterized in that it includes an underwater pipe and two end wells, the top of the end wells is provided with an opening, the bottom of the end wells is sealed, and the lower part of the side wall of the end wells is provided with a pipe connection port, the shape and size of which match the end opening of the underwater pipe; the two ends of the underwater pipe are respectively connected to the pipe connection ports of the two end wells.

[0008] When using the aforementioned manhole-pipe connection device for pipeline construction across river sections, the process is simple: first, an excavator is used to dig a pipeline trench in the riverbed at the desired location, and then end manhole installation slots are dug on both banks where manholes will be installed. Next, the manhole-pipe connection device is lifted to the excavated location, aligning the underwater pipeline with the pipeline trench and the two end manholes with their respective installation slots. Water is then injected into the device through the top openings of the end manholes, causing the entire device to sink. Once the device is in place, prefabricated manholes are hoisted into the two end manholes. Finally, the underwater pipeline is backfilled, successfully completing the pipeline construction across the river section. Using this manhole-pipe connection device eliminates the need for cofferdams to create a construction surface when laying pipelines across river sections. The entire construction process is simpler, faster, lower in cost, safer, more integrated, and ensures higher construction quality.

[0009] In a preferred embodiment, the connection between the underwater pipe and the end well shaft sidewall is further provided with ribs, which are fixedly connected (usually by welding) to the outer walls of the underwater pipe and the end well shaft. The ribs strengthen the connection between the underwater pipe and the end well shaft, ensuring that the connection between the underwater pipe and the end well shaft will not deform or detach during the sinking process.

[0010] In a preferred embodiment, a lifting ring is provided along the upper edge of the end shaft. The lifting ring facilitates the hoisting of the device.

[0011] In the preferred embodiment, both the underwater pipe and the end well are made of steel, and the bottom of the end well is equipped with a bottom steel plate to seal its bottom opening. The steel construction of the well pipe connection device ensures good integrity and prevents leakage, further guaranteeing construction quality.

[0012] The beneficial effects of this utility model are as follows: when constructing underwater pipelines, this well pipe connection device eliminates the need for cofferdam construction, resulting in faster construction speed, better integrity, no leakage, and more guaranteed construction quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the well pipe connection device in an embodiment of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0015] like Figure 1 The device shown is a cross-river well pipe connection device, including an underwater pipe 1 and two end wells 2. The top of the end well 2 is provided with an opening 201, the bottom of the end well 2 is sealed, and the lower part of the side wall of the end well 2 is provided with a pipe connection port. The shape and size of the pipe connection port are matched with the end opening of the underwater pipe 1. The two ends of the underwater pipe 1 are respectively connected to the pipe connection ports of the two end wells 2.

[0016] When using the aforementioned well-pipe connection device for pipeline construction across river sections, the process is simple: first, a amphibious excavator is used to dig a pipeline trench in the riverbed at the location where the construction is needed, and installation slots for the end wells 2 are dug at the locations on both riverbanks where manholes need to be installed. Then, the well-pipe connection device is lifted to the excavated location, aligning the underwater pipe 1 with the pipeline trench and the two end wells 2 with their respective installation slots. Water is then injected into the device through the top opening 201 of the end wells 2, causing the entire device to sink. Once the device is in place, the prefabricated manholes are hoisted into the two end wells 2. Finally, the underwater pipe 1 is backfilled, successfully completing the pipeline construction across the river section. Using this well-pipe connection device eliminates the need for cofferdams to block the river and create a construction surface during pipeline laying across river sections. The entire construction process is simpler, faster, lower in cost, safer, more integrated, and ensures higher construction quality.

[0017] The connection between the underwater pipe 1 and the end well 2 is also provided with a rib plate 3. The rib plate 3 is fixedly connected (usually by welding) to the outer wall of the underwater pipe 1 and the outer wall of the end well 2. The rib plate 3 can strengthen the connection between the underwater pipe 1 and the end well 2, ensuring that the connection between the underwater pipe 1 and the end well 2 will not deform or detach during the sinking process.

[0018] A lifting ring 4 is provided on the upper edge of the end shaft 2. The lifting ring 4 facilitates the hoisting of the device.

[0019] Both the underwater pipe 1 and the end well 2 are made of steel. The bottom of the end well 2 is equipped with a bottom steel plate 202 to seal its bottom opening 201. The steel construction of the well pipe connection device ensures good integrity and prevents leakage, further guaranteeing the quality of construction.

Claims

1. A well-pipeline connection device spanning a river section, characterized in that: It includes an underwater pipe and two end wells. The top of the end wells is open and the bottom of the end wells is sealed. The lower part of the side wall of the end wells has pipe connection ports. The shape and size of the pipe connection ports match the end openings of the underwater pipe. The two ends of the underwater pipe are connected to the pipe connection ports of the two end wells respectively.

2. The wellbore pipeline connection device across a river section as described in claim 1, characterized in that: The connection between the underwater pipe and the end well wall is also provided with ribs, which are fixedly connected to the outer wall of the underwater pipe and the outer wall of the end well.

3. The wellbore pipeline connection device across a river section as described in claim 1, characterized in that: The upper edge of the end well casing is provided with a lifting ring.

4. A well-pipeline connection device spanning a river section as described in claim 1, characterized in that: Both the underwater pipe and the end well are made of steel, and the bottom of the end well is provided with a bottom steel plate to seal its bottom opening.

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