Flexible surface protection structure for hydraulic protection of gas pipeline
The flexible protective structure solves the problem that traditional anti-buoyancy blocks cannot protect the soil covering the upper part of the gas pipeline, achieving a dual protection effect of anti-buoyancy and anti-erosion.
Patent Information
- Application Number
- CN202520546293.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Traditional anti-buoyancy blocks for gas pipelines in waterways cannot effectively protect the soil covering the pipeline from erosion, leading to soil loss.
A flexible facing structure is adopted, which is formed by multiple interlocking concrete slabs. The slabs are connected by steel reinforcement rings and connecting rings, and anchoring hooks are set on the concrete slabs to improve the erosion resistance.
It improves the buoyancy resistance of gas pipelines and the erosion resistance of the cover soil, protecting the stability of the cover soil above the pipeline.
Smart Images
Figure CN223709033U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of gas pipeline water conservancy protection, concretely relates to a flexible facing structure for gas pipeline water conservancy protection. BACKGROUND
[0002] The water conservancy protection of the gas pipeline is an important measure for preventing the pipeline from being washed bare by rain in the rainy season and flood season. In Shanxi Province, there is little rain in winter, the river dries up, there is much rain in summer, the river flow increases rapidly, and the soil covering the gas pipeline in the river is easily washed away. The reason is that the previous water conservancy protection measures mostly use rigid concrete paving blocks to increase the weight on the upper part of the pipeline to provide the anti-floating capacity of the pipeline in the river to ensure the operation of the pipeline in the river. In actual engineering, the counterweight blocks cannot improve the anti-washing capacity of the pipeline along the river longitudinally, and when strong rainfall or flood occurs, the soil covering the upper part of the pipeline is easily washed away by the river, thereby causing the loss of the soil covering the upper part of the pipeline. The counterweight blocks do not play a role in resisting the washing.
[0003] Therefore, it is particularly important to study a water conservation measure that can improve the anti-floating capacity of the pipeline and also protect the soil covering the upper part of the pipeline. SUMMARY
[0004] The utility model discloses to solve the problem that the traditional gas pipeline in the river adopts the anti-floating pressure block to carry out the water conservancy protection, cannot protect the soil covering the upper part of the pipeline and resist washing, provide a flexible facing structure for gas pipeline water conservancy protection.
[0005] To solve the above technical problem, the utility model adopts the technical scheme that a flexible facing structure for gas pipeline water conservancy protection, including a plurality of mutually spliced concrete board, a plurality of concrete board is arranged and forms flexible concrete board in multiple rows and multiple columns, the side surface of concrete board all is equipped with the notch, the steel ring is arranged in the body of concrete board, the steel ring part of the notch position is protruding the notch, and the adjacent steel ring between the adjacent concrete board is connected through the connecting ring cover and realizes the connection, the edge of the concrete board of one side of flexible concrete board is connected with the anchoring hook ring through the connecting ring cover, one side of anchoring hook ring is equipped with a hook, and the other side is equipped with two hooks.
[0006] Further, the upper and lower end faces of the concrete board are square, the area of the upper end face is greater than that of the lower end face, the notch is located at the midpoint of the square edge, and the steel ring is also square, and the four vertices of the steel ring are located at the notch.
[0007] Further, each row of the flexible concrete board includes 6 to 8 concrete boards, and each column includes 6 to 8 concrete boards.
[0008] Further, the size of the upper end surface of the concrete plate is 0.5 m*0.5 m, 0.75 m*0.75 m or 1.0 m*1.0 m, and the thickness of the concrete plate 1 is not less than 0.2 m.
[0009] Further, when the size of the upper end surface of the concrete plate is 0.5 m*0.5 m or 0.75 m*0.75 m, the steel ring is made of steel bars with a diameter of 14-18 mm, and when the size of the upper end surface of the concrete plate is 1.0 m*1.0 m, the steel ring is made of steel bars with a diameter of 18-22 mm, and the anchoring hook ring is made of steel bars with a diameter of 28-32 mm.
[0010] Further, when the size of the upper end surface of the concrete plate is 0.5 m*0.5 m, the size of the two rows of front edge end portions and the two columns of end portions in the water flow direction of the concrete plate is set to be 1050 mm in length of the upper end surface and 250 mm in thickness.
[0011] Further, the upper and lower end surfaces of the concrete plate are trapezoidal, and the area of the upper end surface is larger than that of the lower end surface; when the upper and lower end surfaces of the concrete plate are trapezoidal, the plurality of concrete plates are arranged and connected in a radial shape to form a flexible concrete plate.
[0012] Further, the groups of the flexible concrete plates arranged in a radial shape are connected in groups of 4-6 columns in each direction.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model discloses a flexible facing structure is laid on the gas pipeline, improves the anti-scouring ability of the upper earth of the pipeline, and plays the role of protecting the earth of the pipeline.
[0015] The utility model discloses a flexible facing structure's pressure weight improves the gas pipeline's floating ability.
[0016] The utility model discloses a flexible facing structure has good flexibility, and also improves the integrity of the facing through the hinge connection, and forms the protection measure that has rigidity and flexibility simultaneously on the upper portion of the pipeline. DRAWINGS
[0017] Figure 1 It is the plan view of the flexible facing structure for the hydraulic protection of gas pipeline.
[0018] Figure 2 It is the longitudinal section view of the flexible facing structure for the hydraulic protection of gas pipeline.
[0019] Figure 3 It is the plan view of the concrete plate.
[0020] Figure 4 It isFigure 3 longitudinal section view.
[0021] Figure 5 schematic view of anchoring shackle.
[0022] The figure is marked as follows:
[0023] 1-concrete slab, 2-steel ring, 3-connection ring sleeve, 4-anchoring shackle, 5-river bed, 6-gas pipeline, 7-pipeline peripheral backfill, 8-C30 concrete revetment. DETAILED DESCRIPTION
[0024] The utility model will be further described below in combination with specific embodiments. EMBODIMENT
[0025] As Figure 1 shown, a flexible facing structure for hydraulic protection of gas pipeline, comprising a plurality of concrete slabs 1 spliced together, a plurality of concrete slabs 1 are arranged in multiple rows and multiple columns to form a flexible concrete slab, the side surface of the concrete slab 1 is provided with a notch, a steel ring 2 is arranged in the body of the concrete slab 1, the part of the steel ring 2 located at the notch is protruded from the notch, and the adjacent steel rings 2 of adjacent concrete slabs 1 are connected through a connection ring sleeve 3 (i.e. a hinge); the edge of the concrete slab 1 at one side of the flexible concrete slab is connected with an anchoring shackle 4 through the connection ring sleeve 3, and the anchoring shackle 4 is provided with one hook at one side and two hooks at the other side. One side of one of the hooks is used for being connected with the concrete slab 1; one side of the two hooks is used for being anchored to a fixed pile.
[0026] The flexible facing structure is used for protecting the gas pipeline laid along the river bank, and the function is that with the deepening of the river bed scouring depth, the flexible facing can automatically sink into the scouring pit to cover the pit wall, so that the scouring angle is not developed backward, so as to protect the stability of the soil covering the pipeline periphery. In order to reduce the force acting on the facing by water flow, the flexible concrete slab should be laid at a position slightly lower than the dry water level elevation.
[0027] The flexible facing structure is most suitable to be laid on the medium-grained gravel river bed foundation, which is best in sinking uniformity and effect. For the river bed foundation of small-grained sand and cohesive soil, a cushion layer must be arranged, and hot pitch is filled in the joints with the reinforcing mesh, and the flexible facing structure is not suitable for the river bed with many big boulders.
[0028] Further, the upper and lower end surfaces of the concrete slab 1 are square, and the area of the upper end surface is greater than that of the lower end surface, and such a concrete slab 1 is suitable for pipeline laying as a straight line, the notch is located at the midpoint of the square edge, and the steel ring 2 is also square, and the four vertices of the steel ring 2 are located at the notches respectively.
[0029] Further, the flexible concrete slab comprises 6-8 concrete slabs 1 in each row and 6-8 concrete slabs 1 in each column.
[0030] Further, the size of the upper end surface of the concrete slab 1 is 0.5 m x 0.5 m, 0.75 m x 0.75 m or 1.0 m x 1.0 m, and the thickness of the concrete slab 1 is not less than 0.2 m.
[0031] Further, when the size of the upper end surface of the concrete slab 1 is 0.5 m x 0.5 m or 0.75 m x 0.75 m, the reinforcing ring 2 is made of reinforcing steel with a diameter of 14-18 mm, and when the size of the upper end surface of the concrete slab 1 is 1.0 m x 1.0 m, the reinforcing ring 2 is made of reinforcing steel with a diameter of 18-22 mm, and the anchoring hook ring 4 is made of reinforcing steel with a diameter of 28-32 mm.
[0032] Further, when the size of the upper end surface of the concrete slab 1 is 0.5 m x 0.5 m, the size of the two rows of front edge end portions and the two columns of end portions in the water flow direction of the concrete slab 1 is set to be 1050 mm in the length of the upper end surface and 250 mm in thickness.
[0033] Further, the upper and lower end surfaces of the concrete slab 1 are trapezoidal, and the area of the upper end surface is larger than that of the lower end surface. Such a concrete slab 1 is suitable for pipeline laying in a curve or with a bent pipe. When the upper and lower end surfaces of the concrete slab 1 are trapezoidal, a plurality of concrete slabs 1 are arranged and connected in a radial shape to form a flexible concrete slab.
[0034] Further, the flexible concrete slab arranged in a radial shape is grouped in 4-6 columns in each direction.
[0035] Working process and principle: According to the water flow condition, the flexible protective structure should be laid on the riverbed in the protection range in groups in a direction perpendicular to the pipeline laying. When the pipeline laying is in a straight line, square slabs (i.e. the upper and lower end surfaces of the concrete slab 1 are square) are arranged in a straight line, and it is appropriate that the laying is grouped in 6-8 columns in a group. When the pipeline laying is in a curve or with a bent pipe, trapezoidal slabs (i.e. the upper and lower end surfaces of the concrete slab 1 are trapezoidal) are arranged in a radial shape, and it is better that the laying is grouped in 4-6 columns in a group. The anchoring hook ring 4 can be anchored to a specially designed fixed pile at the end close to the riverbank.
[0036] The laying length should be such that the concrete slab can cover the entire pipeline trench, and the end portion should be connected to the riverbank in sequence.
[0037] When the size of the concrete slab used is large, the entire facing is usually made of one slab. When the size is small, in order to prevent displacement of the slab, the two rows of the front edge end and the two rows of the end in the direction of the water flow of the entire facing are replaced by slabs of increased and thickened size (1050mmx250mm). At the same time, in order to reduce the tension on the fixed end, the two rows of slabs near the fixed end are also replaced by slabs of increased and thickened size.
[0038] The concrete slab is prefabricated using C20 concrete, and the planar size is preferably 0.5mX0.5m, 0.75mX0.75m and 1.0mX1.0m. The thickness of the slab should not be less than 0.2m. Steel bars are arranged in the slab as connecting hooks, and the size of the steel bars is as follows: D(14~18)mm steel bars are used for smaller slabs; D(18~22)mm steel bars are used for larger slabs; and D(28~32)mm steel bars are used for the anchoring hooks of the fixed end. The outer part of the steel bars should be coated with rust-proof agent to prevent rusting.
[0039] Before the concrete is laid, large boulders should be removed, the riverbed is leveled, or a layer of gravel cushion is first laid, and a gentle slope is formed from the river bank to the river center according to the riverbed topography.
Claims
1. A flexible armouring structure for hydraulic protection of a gas pipeline, characterised in that, The utility model provides a flexible concrete slab, which comprises a plurality of concrete slabs (1) spliced together, the plurality of concrete slabs (1) are arranged in multiple rows and multiple columns to form the flexible concrete slab, the side surface of the concrete slab (1) is provided with a notch, a reinforcing ring (2) is arranged in the body of the concrete slab (1), part of the reinforcing ring (2) located at the notch extends out of the notch, and the adjacent reinforcing rings (2) of adjacent concrete slabs (1) are connected through a connecting ring sleeve (3); the edge of the concrete slab (1) on one side of the flexible concrete slab is connected with an anchoring hook ring (4) through the connecting ring sleeve (3), one side of the anchoring hook ring (4) is provided with one hook, and the other side is provided with two hooks.
2. A flexible armouring structure for hydraulic protection of a gas pipeline according to claim 1, characterised in that, The upper and lower end surfaces of the concrete slab (1) are square, and the area of the upper end surface is larger than that of the lower end surface, the notch is located at the midpoint of the square edge, and the reinforcing ring (2) is also square, and the four vertices of the reinforcing ring (2) are located at the notches.
3. A flexible armouring structure for hydraulic protection of a gas pipeline according to claim 2, characterised in that, Each row of the flexible concrete slab comprises 6-8 concrete slabs (1), and each column comprises 6-8 concrete slabs (1).
4. A flexible armouring structure for hydraulic protection of a gas pipeline according to claim 2, characterised in that, The size of the upper end surface of the concrete slab (1) is 0.5 m*0.5 m, 0.75 m*0.75 m or 1.0 m*1.0 m, and the thickness of the concrete slab (1) is not less than 0.2 m.
5. A flexible revetment structure for hydraulic protection of a gas pipeline according to claim 4, characterised in that, When the size of the upper end surface of the concrete slab (1) is 0.5 m*0.5 m or 0.75 m*0.75 m, the reinforcing ring (2) is made of reinforcing steel with a diameter of 14-18 mm, and when the size of the upper end surface of the concrete slab (1) is 1.0 m*1.0 m, the reinforcing ring (2) is made of reinforcing steel with a diameter of 18-22 mm, and the anchoring hook ring (4) is made of reinforcing steel with a diameter of 28-32 mm.
6. A flexible revetment structure for hydraulic protection of a gas pipeline according to claim 5, characterised in that, When the size of the upper end surface of the concrete slab (1) is 0.5 m*0.5 m, the size of the two rows of front edge end portions and the two columns of end portions in the water flow direction of the concrete slab (1) is set to 1050 mm in length and 250 mm in thickness.
7. A flexible facing structure for hydraulic protection of a gas pipeline according to claim 1, characterized in that, The upper and lower end surfaces of the concrete slab (1) are trapezoidal, and the area of the upper end surface is larger than that of the lower end surface; when the upper and lower end surfaces of the concrete slab (1) are trapezoidal, the plurality of concrete slabs (1) are arranged and connected in a radial shape to form the flexible concrete slab.
8. A flexible armouring structure for hydraulic protection of a gas pipeline according to claim 7, characterised in that, The grouping in each direction of the flexible concrete slab arranged in a radial shape is grouped into a group in 4-6 columns.