Underground laying structure for pipeline crossing riverway

Abstract

The utility model discloses a buried laying structure for a pipeline crossing a river channel, and belongs to the technical field of pipeline construction. The utility model relates to an embedded pipe which is composed of a plurality of prefabricated pipeline underground units, adjacent pipeline underground units are spliced with each other, one pipeline underground unit comprises a hollow outer shell with two through ends, an embedded pipe is arranged in the outer shell, and the two ends of the embedded pipe are consistent with the outer shell in length. A concrete isolation layer is filled between the outer layer shell and the embedded pipe, a plurality of ground inserting rods are arranged on the lower surface of the outer layer shell, one end of each ground inserting rod is fixed to the outer layer shell, the other end of each ground inserting rod is inserted into a riverbed, and the outer layer shell of the pipeline buried unit is located in a riverbed soft layer. And the ground inserting rod is inserted into the riverbed hard layer. According to the technical scheme, by arranging the prefabricated parts, the installation space and area of the pipeline installation river in the river are constructed, and the construction efficiency of the pipeline penetrating through the river is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline construction, and in particular relates to an underground laying structure for a pipeline crossing a river. Background Art

[0002] Pipeline crossing a river refers to laying a pipeline under a river according to certain engineering design and construction methods to facilitate the transportation of liquids (such as water, oil, etc.) or gases (such as natural gas). This practice allows the pipeline to safely cross the water without interfering with the natural flow of the river and activities such as shipping.

[0003] In the prior art, there is a buried structure for laying a pipeline across a river channel, such as patent number CN201922487384.5, which is constructed in the river channel and includes: steel pipe piles, steel frames and pipelines; the silt in the river channel is solidified by a curing agent to form solidified soil, wherein a pipeline accommodating space is formed in the solidified soil, wherein the pipeline is placed in the pipeline accommodating space, at least one steel pipe pile is driven on both sides of the river channel and a steel frame is erected on the steel pipe pile, a steel sheet pile cofferdam is placed on both sides of the pipeline and inserted into the river channel, the top of which is raised by raising a water retaining plate, and bagged soil is arranged on the water-facing surface of the steel sheet pile cofferdam.

[0004] Although the above-mentioned existing technologies can realize the pipeline crossing the river, it requires cofferdam and excavation construction in the river, and the cofferdam and excavation construction process is relatively complicated, which leads to a long construction period of the pipeline and low construction efficiency. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an underground laying structure for pipelines crossing rivers, so as to solve the problem of low construction efficiency when the purpose of pipelines crossing rivers is achieved through the cofferdam and excavation process in the prior art.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] The utility model discloses a pipeline buried structure for crossing a river channel, which is composed of a plurality of prefabricated pipeline buried units. Adjacent pipeline buried units are spliced ​​with each other. One of the pipeline buried units comprises a hollow outer shell with two ends penetrated. A pre-buried pipe is arranged inside the outer shell. The two ends of the pre-buried pipe are consistent in length with the outer shell. A concrete isolation layer is filled between the outer shell and the pre-buried pipe. A plurality of ground plugs are arranged on the lower surface of the outer shell. One end of the ground plug is fixed to the outer shell, and the other end of the ground plug is inserted into the riverbed. The outer shell of the pipeline buried unit is located inside the soft layer of the riverbed, and the ground plug is inserted into the hard layer of the riverbed.

[0008] Furthermore, a traction rope is provided inside the pre-buried pipe of the pipeline pre-buried unit, and a hanging ring connected to the end of the installation pipeline is provided on one end of the traction rope.

[0009] Furthermore, a rubber piston block is provided between the traction rope and the hanging ring, and the outer side surface of the rubber piston block is in close contact with the inner side surface of the embedded pipe.

[0010] Furthermore, waterproof layers fixedly connected thereto are provided on both end surfaces of the outer shell, and a through hole matching the diameter of the embedded pipe is provided in the middle of the waterproof layer.

[0011] Furthermore, the plugging end of the ground plug rod is conical.

[0012] Furthermore, the adjacently arranged underground pipeline units are fixedly connected by welding, and the welding positions are the contact end surfaces of the two outer shells.

[0013] Furthermore, at least a portion of the two underground pipeline units located at the two ends are located on the river bank.

[0014] Furthermore, one end of the ground rod is fixed to the outer shell by welding.

[0015] Furthermore, the cross-sectional shape of the outer shell is a trapezoid that is narrow at the top and wide at the bottom.

[0016] The beneficial effects of the utility model are:

[0017] In this technical solution, prefabricated pipeline embedded units are assembled and then installed in the river channel by hoisting, so as to construct a space and area for installing pipelines. There is no need to carry out cofferdam construction and trenching on the riverbed, which can greatly improve the construction efficiency. At the same time, the setting of the concrete isolation layer can play the role of counterweight, and the setting of the ground plug rod can make the pipeline buried unit stably installed on the riverbed. This method of pipeline crossing the river channel greatly shortens the construction period and improves the construction efficiency.

[0018] Other advantages, objectives and features of the utility model will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model provides the following drawings for explanation:

[0020] Figure 1 It is a three-dimensional schematic diagram of the underground pipeline unit of the utility model;

[0021] Figure 2 It is a three-dimensional schematic diagram of splicing multiple underground pipeline units of the utility model;

[0022] Figure 3 It is a cross-sectional view schematic diagram of a traction rope arranged inside the underground pipeline unit of the utility model;

[0023] Figure 4 This is a schematic diagram of the underground pipeline unit of the utility model being installed in a river channel.

[0024] The following are marked in the accompanying drawings:

[0025] 1. Outer shell; 2. Concrete isolation layer; 3. Embedded pipes; 4. Ground plug rods; 5. Waterproof layer; 6. Towing rope; 7. Rubber piston block; 8. Hanging ring; 9. Soft layer of riverbed; 10. Hard layer of riverbed; 11. River channel. DETAILED DESCRIPTION

[0026] like Figures 1 to 4 As shown, the utility model is a structure for laying pipelines underground across a river, which is composed of a plurality of prefabricated pipeline underground units, the specific number of which can be determined according to the width of the river 11 to be crossed, and adjacent pipeline underground units are spliced ​​with each other, and one pipeline underground unit comprises a hollow outer shell 1 with two ends penetrated, and the material of the outer shell 1 is preferably corrosion-resistant and has a certain supporting capacity, such as stainless steel, and a pre-buried pipe 3 is arranged inside the outer shell 1, and the material of the pre-buried pipe 3 is preferably a plastic pipe, which can save costs to a certain extent, and the two ends of the pre-buried pipe 3 are consistent with the length of the outer shell, and a concrete isolation layer 2 is filled between the outer shell 1 and the pre-buried pipe 3, and a plurality of ground plug rods 4 are arranged on the lower surface of the outer shell 1, one end of the ground plug rod 4 is fixed on the outer shell 1, and the other end of the ground plug rod 4 is inserted into the riverbed, the outer shell 1 of the pipeline underground unit is located inside the soft layer 9 (silt layer and sediment layer) of the riverbed, and the ground plug rod 4 is inserted into the hard layer 10 (hard soil layer) of the riverbed.

[0027] The principle of the above technical solution is:

[0028] When the installation pipeline needs to pass through the river channel 11 and is to be concealed in the river channel 11, several spliced ​​pipeline buried units can be placed in the river channel 11 by hoisting, and then squeezed so that the ground insertion rod 4 can be firmly inserted into the hard layer of the river channel 11, so that the pipeline buried unit is firmly fixed on the riverbed, and then the installation pipeline to be laid is pulled out from the inside of the pre-buried pipe 3, thereby realizing the operation of the pipeline crossing the river channel 11.

[0029] By assembling prefabricated pipeline embedded units and then installing them in the river channel 11 by hoisting, a space and area for installing pipelines can be constructed. There is no need to carry out cofferdam construction and trenching on the riverbed, which can greatly improve the construction efficiency. At the same time, the setting of the concrete isolation layer 2 can play the role of counterweight, and the setting of the ground plug rod 4 can enable the pipeline embedded unit to be stably installed on the riverbed.

[0030] In one feasible manner, a traction rope 6 is provided inside the embedded pipe 3 of the pipeline embedded unit, and a hanging ring 8 connected to the end of the installation pipeline is provided at one end of the traction rope 6. The installation pipeline is dragged by means of the traction rope 6 to pass through the pipeline buried unit, and there is no need to install the traction rope 6 afterwards.

[0031] In one feasible manner, a rubber piston block 7 is provided between the traction rope 6 and the hanging ring 8, and the outer side surface of the rubber piston block 7 is in close contact with the inner side surface of the embedded pipe 3. When the rubber piston block 7 is dragged by the traction rope 6, the inside of the rubber piston block 7 can discharge the water that enters the embedded pipe 3 during lifting, thereby ensuring the safe use of the pipeline installed inside.

[0032] In one feasible manner, a waterproof layer 5 fixedly connected to the outer shell 1 is provided on both end surfaces thereof, and a through hole matching the diameter of the embedded pipe 3 is provided in the middle of the waterproof layer 5. The waterproof layer 5 is provided to prevent moisture in the river bank soil from entering the concrete isolation layer 2, causing the concrete isolation layer 2 to be soaked and fail.

[0033] In one practicable manner, the insertion end of the ground insertion rod 4 is conical in shape, and the conical shape is convenient for reducing the resistance of insertion into the riverbed.

[0034] In an practicable manner, adjacent underground pipeline units are fixedly connected by welding, and the welding parts are the contact end faces of the two outer shells 1. The welding fixation method is simple and can achieve sealing and waterproof operation to prevent water from entering the interior.

[0035] In an practicable manner, at least a portion of the two pipeline buried units at both ends are located on the river bank, which avoids the problem of water ingress at the ends and facilitates the traction work of the pipeline installation in the later stage. One end of the ground plug rod 4 is fixed to the outer shell 1 by welding. The cross-sectional shape of the outer shell 1 is a trapezoid with a narrow top and a wide bottom. This setting method has stronger installation stability and can better overcome the scouring of the river.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A pipeline buried structure crossing a river, characterized by: The invention is composed of a plurality of prefabricated pipeline underground units, wherein adjacent pipeline underground units are spliced ​​with each other, wherein one of the pipeline underground units comprises an outer shell (1) which is hollow and has two through-holes, wherein a pre-buried pipe (3) is arranged inside the outer shell (1), wherein the two ends of the pre-buried pipe (3) have the same length as the outer shell, and a concrete isolation layer (2) is filled between the outer shell (1) and the pre-buried pipe (3), wherein a plurality of ground insertion rods (4) are arranged on the lower surface of the outer shell (1), wherein one end of the ground insertion rod (4) is fixed to the outer shell (1), and the other end of the ground insertion rod (4) is inserted into the riverbed, wherein the outer shell (1) of the pipeline underground unit is located inside the soft layer (9) of the riverbed, and the ground insertion rod (4) is inserted into the hard layer (10) of the riverbed.

2. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: A traction rope (6) is provided inside the pre-buried pipe (3) of the pipeline pre-buried unit, and a hanging ring (8) connected to the end of the installation pipeline is provided at one end of the traction rope (6).

3. The underground laying structure for pipeline crossing a river according to claim 2 is characterized in that: A rubber piston block (7) is provided between the traction rope (6) and the hanging ring (8), and the outer side surface of the rubber piston block (7) is in close contact with the inner side surface of the embedded pipe (3).

4. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: Both end surfaces of the outer shell (1) are provided with waterproof layers (5) fixedly connected thereto, and the middle portion of the waterproof layer (5) is provided with a through hole matching the diameter of the embedded pipe (3).

5. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: The plugging end of the ground plug rod (4) is configured in a conical shape.

6. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: The adjacently arranged underground pipeline units are fixedly connected by welding, and the welding locations are the contact end surfaces of the two outer shells (1).

7. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: At least a part of the two underground pipeline units located at the two ends are located on the river bank.

8. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: One end of the ground rod (4) is fixed to the outer shell (1) by welding.

9. The underground laying structure for pipeline crossing a river according to claim 1 is characterized in that: The cross-sectional shape of the outer shell (1) is a trapezoid that is narrow at the top and wide at the bottom.

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