Composite overflow type hydraulic reclamation drain opening structure

Abstract

The utility model relates to a composite overflow type hydraulic reclamation drain opening structure which comprises an anti-seepage structure, an overflow structure and a supporting structure, the anti-seepage structure comprises Larsen steel sheet piles, an anti-seepage geomembrane A and a blanket, and the overflow structure comprises an overflow steel sheet, bagged gravel, an anti-seepage geomembrane B and a gravel hardcore. The supporting structure comprises homogeneous rolling soil located below the overflow structure. The overflow type drain opening structure is of a steel sheet pile and earth-rock composite structure, the safety and stability requirements are met, the hydraulic reclamation side is of a steel sheet pile geomembrane composite structure and can play a role in seepage prevention, the supporting structure is of an earth-rock structure, the hydraulic reclamation space can be enlarged, earth materials can be saved, and meanwhile the effects of inclination resistance and sliding resistance are achieved; meanwhile, according to the composite overflow type hydraulic reclamation drain opening structure provided by the utility model, the inverted U-shaped steel plate with the asymmetrical top part forms an overflow weir attached to water flow, the design is automatic flood discharge, frequent maintenance and operation are not needed, and the maintenance cost is lower.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dredging and hydraulic fill technology field especially relates to a composite overflow type hydraulic fill outlet structure. BACKGROUND

[0002] The dredging ship blows the mud in the mud pond, and the residual water after precipitation is discharged into the river and the canal through the outlet. Whether the outlet discharges water or not, the water level needs to be controlled artificially, and the discharge effect affects the quality and progress of the hydraulic fill project, so the form, layout position, cross section width and construction technology of the outlet become the key to the quality of the project. At present, there are two kinds of commonly used outlets, one is a buried pipe gate box type outlet, the upper part of the weir can be passed by vehicles and pedestrians, the construction is simple, the waste pipeline can be used, and manual operation is needed to control the discharge level at the gate, which is inconvenient for construction. One is a gate box type outlet, which has good structural stability and is widely used. The upper part of the weir can be passed by vehicles and pedestrians, and the construction is simple. The waste pipeline can be used, and the discharge level can be controlled by lifting the gate box plate. The cost is relatively high. Therefore, a composite overflow type hydraulic fill outlet structure is provided to solve the above problems. SUMMARY

[0003] The utility model solves the technical problems existing in the prior art, and provides a composite overflow type hydraulic fill outlet structure.

[0004] The utility model is implemented through the following technical solutions:

[0005] A composite overflow type hydraulic fill outlet structure, comprising a anti-seepage structure, an overflow structure and a supporting structure, the anti-seepage structure comprises a Larsen steel sheet pile, an anti-seepage geomembrane A and a paving, the overflow structure comprises an overflow steel plate, a bagged gravel, an anti-seepage geomembrane B and a gravel cushion, the overflow steel plate is fixedly connected with the top of the Larsen steel sheet pile, the bagged gravel is piled in front of the overflow port to form a uniform water distribution channel, the channel bottom of the uniform water distribution channel is paved with the anti-seepage geomembrane B and the gravel cushion, and the supporting structure comprises homogeneous rolled soil under the overflow structure.

[0006] According to the above technical scheme, preferably, the water side of the Larsen steel sheet pile and the waterproof geomembrane A are closely attached, the overflow steel plate presses the waterproof geomembrane A on the top of the Larsen steel sheet pile, and is welded with the Larsen steel sheet pile.

[0007] According to the above technical scheme, preferably, the overflow slope surface of the homogeneous rolled soil side is externally paved with the anti-seepage geomembrane B.

[0008] According to the above technical scheme, preferably, the supporting structure further comprises bagged soil, which is arranged outside the anti-seepage geomembrane B.

[0009] According to the technical scheme, preferably, the inner slope of the bagged gravel is 1:1, and the outer slope of the bagged gravel is consistent with the overflow slope surface of the supporting structure.

[0010] According to the technical scheme, preferably, the homogeneous compacted soil is made of clay soil with a clay content of 10-35%, a plasticity index of 7-20, and free of plant roots and brick and tile waste, a water content of the homogeneous compacted soil has an allowable deviation of ±3% from an optimal water content, a compaction degree of the homogeneous compacted soil is not less than 0.91, and a permeability coefficient of the homogeneous compacted soil is not greater than 1*10 -5 cm / s.

[0011] According to the technical scheme, preferably, the weight of the bagged soil is not greater than 50 kg, and the outer slope ratio of the overflow slope surface is 1:3-1:5.

[0012] According to the technical scheme, preferably, the side of the anti-seepage geomembrane B in the uniform water distribution channel is tightly attached to the Larsen steel sheet pile, and the anti-seepage geomembrane B is fixedly connected to the Larsen steel sheet pile through the fastener.

[0013] According to the technical scheme, preferably, the fastener comprises a bolt, a nut, a metal gasket, a steel plate and a non-woven fabric gasket, the bolt is fixedly connected to the Larsen steel sheet pile, and the bolt passes through the anti-seepage geomembrane B, the non-woven fabric gasket, the steel plate and the metal gasket in sequence and is fixedly connected to the nut.

[0014] The utility model discloses a beneficial effect is:

[0015] The overflow type water outlet meets the safety and stability requirements, the structure is a steel sheet pile and earth-rock composite structure, the reclamation side is a steel sheet pile geomembrane composite structure and can play a seepage prevention role, the supporting structure is an earth-rock structure, can increase the reclamation space, save soil material, and play a role of anti-inclination and anti-sliding at the same time.

[0016] At the same time, the utility model provides a kind of composite overflow type reclamation water outlet structure, item part asymmetric inverted U type steel sheet, form the overflow weir of sticking to water flow, design is automatic flood discharge, need not frequent maintenance and operation, maintenance cost is lower. DRAWINGS

[0017] Figure 1 It is the front structure section view of the utility model.

[0018] Figure 2 It is the top structure schematic diagram of the utility model.

[0019] Figure 3 It is the local structure schematic diagram of the utility model Figure 1 in C.

[0020] In the figure: 1, Larsen steel sheet pile; 2, impermeable geomembrane A; 3, paving; 4, overflow steel plate; 5, bagged gravel; 6, gravel cushion; 7, homogeneous compacted soil; 8, impermeable geomembrane B; 9, bagged soil; 10, bolt; 11, nut; 12, metal gasket; 13, steel plate; 14, non-woven fabric gasket. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below in combination with the drawings and the best embodiment. Based on the embodiment in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 limiting the present application.

[0023] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] As shown in the figure, the present application comprises an impermeable structure, an overflow structure and a supporting structure, the impermeable structure comprises Larsen steel sheet pile 1, impermeable geomembrane A 2 and paving 3, the overflow structure comprises overflow steel plate 4, bagged gravel 5, impermeable geomembrane B 8 and gravel cushion 6, the overflow steel plate 4 is fixedly connected with the top of the Larsen steel sheet pile 1, the bagged gravel 5 is stacked in front of the overflow port to form a uniform water distribution channel, the channel bottom of the uniform water distribution channel is paved with impermeable geomembrane B 8 and gravel cushion 6, the supporting structure comprises homogeneous compacted soil 7 located below the overflow structure.

[0025] The anti-seepage structure is composed of Larsen steel sheet pile 1 and anti-seepage geomembrane A2 to compensate for the water leakage of the old steel sheet pile, and is inserted into the foundation soil with a length meeting the relevant specification requirements to achieve the purpose of combining rigid water stop and flexible water stop, and to play the role of light structure and overall anti-seepage. Specifically, the water side of the Larsen steel sheet pile 1 is closely attached to the waterproof geomembrane A, the overflow steel plate 4 presses the waterproof geomembrane A on the top of the Larsen steel sheet pile 1, and is welded with the Larsen steel sheet pile 1. In this example, the waterproof geomembrane A is inserted into the soil by 50 cm, and is horizontally laid by 3-5 m, and is combined with the laid cover 3, the Larsen steel sheet pile 1 can select 1200 mm*1200 mm*20 mm steel plate, and the waterproof geomembrane can select 300 g / m2 specification to achieve the anti-seepage effect.

[0026] The overflow steel plate 4 in the overflow structure can select 4 mm thick steel plate, which is bent into an asymmetric inverted "U" shape, the overflow steel plate 4 internally presses the anti-seepage geomembrane A2, and is welded with the top of the Larsen steel sheet pile 1 (the welding seam width is not less than 8 mm to ensure firm connection), to form a weir top. Among them, the top of the overflow structure is 0.5-2 m lower than the design filling elevation, the bagged gravel 5 is piled up in front of the overflow port by 3-5 m to form a uniform water distribution channel, the inner slope of the bagged gravel 5 is 1:1, the outer slope is consistent with the supporting structure, the channel bottom is paved with anti-seepage geomembrane B8 and gravel cushion 6, the gravel can select D30 grading, the anti-seepage geomembrane B8 can select 300 g / m2 specification to prevent water infiltration and erosion and affect the safety of the structure.

[0027] The supporting structure is composed of homogeneous rolled soil 7 and bagged soil 9, both of which are earth-rock structures. The homogeneous rolled soil 7 should remove the surface soil layer of 300-500 mm before construction, uniformly spread, and each layer of soil is rolled to a thickness of 300 mm, layer by layer, and finally connected with the upper overflow structure, the overflow slope is paved with anti-seepage geomembrane B8, and the bagged soil 9 is paved on it to prevent the anti-seepage geomembrane B8 from being pierced. Specifically, in this example, the homogeneous rolled soil 7 preferably uses clay soil with a clay content of 10-35% and a plasticity index of 7-20, and does not contain plant roots, bricks, garbage and other impurities, the allowable deviation of its water content from the optimum water content is ±

[0028] 3%, the compaction degree is not less than 0.91, and the permeability coefficient is not greater than 1*10-5 cm / s. In addition, the weight of each bagged soil 9 is not more than 50 kg, and the flattened size of the bag body is 0.75 m*0.55 m, and the flattened size of the bag body can also be adjusted according to the actual situation on site. The outer slope ratio of the overflow slope is 1:3-1:5, the anti-seepage geomembrane B8 can select 300 g / m2 specification, and is paved on the outside of the homogeneous rolled soil 7, and the bagged soil 9 is paved on the top with a thickness of 300-500 mm.

[0029] Meanwhile, the overflow steel plate 4 in the overflow structure buckles the anti-seepage geomembrane A2 in the Larsen steel sheet pile, and the corners are welded. The side of the anti-seepage geomembrane B8 in the uniform water distribution channel is closely attached to the Larsen steel sheet pile 1, and is fixedly connected to the Larsen steel sheet pile 1 through a fastener. The fastener comprises a bolt 10, a nut 11, a metal gasket 12, a steel plate 13 and a non-woven fabric gasket 14. The bolt 10 is fixedly connected to the Larsen steel sheet pile 1, and sequentially penetrates through the anti-seepage geomembrane B8, the non-woven fabric gasket 14, the steel plate 13, the metal gasket 12 and is fixedly connected to the nut 11. Preferably, the non-woven fabric gasket 14 is 2mm thick and 150mm wide, the size of the steel plate 13 is not less than 4mm*100mm (thickness*width), the steel plate 13 is bent to be closely attached to the steel sheet pile, and the inner diameter DN20 and the outer diameter 55mm of the metal gasket 12.

[0030] In summary, the application provides a composite overflow type blow filling outlet structure. The anti-seepage structure is located on the blow filling water side, and is mainly composed of a Larsen steel sheet pile 1. The overflow structure is composed of an overflow steel plate 4, a bagged gravel 5 and a gravel cushion layer 6. The supporting structure is located at the bottom of the overflow structure, and is a soil and rock structure. The three structures together form a composite overflow type outlet structure. The composite structure mainly composed of the Larsen steel sheet pile 1 resists the water and soil side pressure on the blow filling side. The overflow steel plate 4 is attached to the water flow line to prevent water from seeping along the bottom side of the Larsen steel sheet pile 1 to the supporting structure, thereby ensuring the safety of the structure. The supporting structure is closely connected to the foundation and is rolled layer by layer to resist tilting and sliding.

[0031] The application has the following technical effects:

[0032] The overflow type outlet structure meets the safety and stability requirements. Since the structure is a composite structure of a steel sheet pile and soil and rock, the blow filling side is a composite structure of a steel sheet pile and geomembrane, which can play a role in preventing seepage. The supporting structure is a soil and rock structure, which can increase the blow filling space, save soil, and at the same time, play a role in resisting tilting and sliding. Meanwhile, the application provides a composite overflow type blow filling outlet structure. The asymmetric inverted U-shaped steel plate at the top forms an overflow weir that is attached to the water flow. The design is automatic flood discharge, which does not need frequent maintenance and operation, and the maintenance cost is low. In addition, the structure of the application is simple, the construction speed is fast, the occupied space is small, the wall has good anti-seepage performance, the building materials are easy to obtain, the construction has little impact on the surrounding environment, the maintenance and management are convenient, the engineering infrastructure and operation cost are low, and the application can be widely applied to the dredging and blow filling design of muddy sandy soil.

[0033] The preferred embodiments of the application are described above, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the application. These improvements and refinements should also be considered as the protection scope of the application.

Claims

1. A composite overflow type of hydraulic fill outlet structure, characterized in that It comprises a seepage-proof structure, an overflow structure and a supporting structure, The seepage-proof structure comprises a Larsen steel sheet pile (1), a seepage-proof geomembrane A (2) and a blanket (3), The overflow structure comprises an overflow steel sheet (4), a bagged gravel (5), a seepage-proof geomembrane B (8) and a gravel cushion (6), the overflow steel sheet (4) is fixedly connected with the top of the Larsen steel sheet pile (1), the bagged gravel (5) is filled in front of the overflow port to form a uniform water distribution channel, the seepage-proof geomembrane B (8) and the gravel cushion (6) are laid on the bottom of the uniform water distribution channel, The supporting structure comprises a homogeneous rolled soil (7) under the overflow structure.

2. The overflow type outlet structure according to claim 1, wherein The water-facing side of the Larsen steel sheet pile (1) is closely attached to the waterproof geomembrane A, The overflow steel sheet (4) presses the waterproof geomembrane A on the top of the Larsen steel sheet pile (1) and is welded with the Larsen steel sheet pile (1).

3. The overflow outlet structure according to claim 1 or 2, wherein The seepage-proof geomembrane B (8) is laid outside the overflow slope surface on the side of the homogeneous rolled soil (7).

4. The overflow type composite blow-off outlet structure according to claim 3, characterized in that, The supporting structure further comprises a bagged soil (9) arranged outside the seepage-proof geomembrane B (8).

5. The overflow type composite blow-off outlet structure according to claim 4, characterized in that, The inner slope of the bagged gravel (5) is 1:1, and the outer slope of the bagged gravel (5) is consistent with the overflow slope surface of the supporting structure.

6. The overflow type composite blow-off outlet structure according to claim 1, characterized in that The homogeneous rolled soil (7) is made of clay soil with a clay content of 10-35% and a plasticity index of 7-20, and does not contain plant roots, bricks and tiles and garbage, The allowable deviation of its water content from the optimal water content is ±3%, the compaction degree is not less than 0.91, and the permeability coefficient is not greater than 1×10 -5 cm / s.

7. The overflow outlet structure according to claim 5, wherein The weight of the bagged soil (9) is not more than 50 kg, and the outer slope ratio of the overflow slope surface is 1:3-1:

5.

8. The overflow outlet structure according to claim 1, wherein The seepage-proof geomembrane B (8) in the uniform water distribution channel is closely attached to the Larsen steel sheet pile (1) on the side and is fixedly connected to the Larsen steel sheet pile (1) through fasteners.

9. The overflow outlet structure according to claim 8, wherein The fasteners comprise a bolt (10), a nut (11), a metal gasket (12), a steel sheet (13) and a non-woven fabric gasket (14), the bolt (10) is fixedly connected with the Larsen steel sheet pile (1), the bolt (10) passes through the seepage-proof geomembrane B (8), the non-woven fabric gasket (14), the steel sheet (13) and the metal gasket (12) in sequence and is fixedly connected with the nut (11).

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