CN210315417U - River bottom anti-scour structure of river channel water storage area - Google Patents

Abstract

The utility model discloses a river bottom scour protection structure of a river channel water storage area, which comprises frame-type locking blocks built in the middle of the river bottom and concrete prefabricated blocks laid in the frame-type locking blocks, wherein steel stranded wires are arranged between the adjacent concrete prefabricated blocks and between the concrete prefabricated blocks and the adjacent frame-type locking blocks in a penetrating way, the steel stranded wires are used for connecting the frame-type locking blocks and the concrete prefabricated blocks in series into a grid structure, and the steel stranded wires pass through four through holes crossed in a groined shape in the concrete prefabricated blocks; the river bottom anti-seepage structure adopts a structure combining the concrete precast block and the frame type locking block, so that the water impact resistance of the river bottom is effectively improved, the river bottom is prevented from being washed by water flow, the concrete precast block is of a groined structure, and the latticed structure formed after splicing can keep certain water seepage performance, can also keep the stability of a bentonite waterproof blanket and a reversed filter geotextile, prolongs the service life of the anti-seepage structure and ensures the use performance of the anti-seepage structure.

Description

River bottom anti-scour structure of river channel water storage area

Technical Field

The utility model relates to an environmental management technical field especially relates to a river course water storage area river bottom scour protection structure.

Background

With the attention of people to the natural environment, river treatment becomes a mode for preventing water and soil loss, and conventional river treatment forms a mature treatment system, but for river channels around some northern cities, due to the limitation of geographical conditions and the influence of human intervention, no ecological base flow exists at ordinary times, the river channels mainly contain medium fine sand, have strong permeability and large evaporation capacity, so that the river channels around many northern cities are almost dry all the year round, and proper artificial seepage prevention measures must be taken to ensure the water storage surface in the river channels to reduce water and soil loss.

Conventional artificial anti-seepage measures generally include:

concrete seepage prevention: the anti-seepage measure is more suitable for the concrete anti-seepage main type of the artificial lake engineering with regular water body and smaller water surface area, and can be assembled by cast-in-place concrete and concrete precast blocks, and the service life can generally reach 30-50 years. The concrete seepage-proofing has the advantages of better seepage-proofing and impact-proofing properties and stronger durability, but has the defects of high construction cost, poor ecological effect and the like.

Clay seepage control: the clay seepage prevention belongs to a traditional seepage prevention method, has the characteristics of low investment and simple and convenient process for areas with high-quality clay, is favorable for ecological exchange, and has the service life of about 25 years generally. The thickness required by the clay seepage prevention is larger, so the total engineering quantity is large, and the clay seepage prevention method is more suitable for the situation of locally using materials. The Hutuo river is relatively short of the soil source along the shore region, so the cost for obtaining high-quality clay meeting the anti-seepage is high. Besides the two traditional engineering seepage-proofing types, masonry stone, asphalt concrete and the like can be used as seepage-proofing materials, but the application range and the effect of the material are generally not suitable for large-range river and lake seepage prevention, but for river channels of clay seepage prevention or other non-concrete seepage-proofing types, the river channels are easy to damage after river water is washed for a period of time, and therefore, an anti-impact structure needs to be developed and designed for the existing environment-friendly non-concrete seepage-proofing structure.

Disclosure of Invention

The utility model aims to solve the technical problem that a river course water storage area river bottom scour protection structure is provided, the anti-scouring performance of non-concrete river course can be effectively improved, seepage prevention structure's result of use is kept, increase of service life.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides a river bottom scour protection structure in river course water storage area, includes that the frame-type locking piece of building by laying bricks or stones at river bottom middle part and the concrete prefabricated section of spreading in the frame-type locking piece, wear to establish the steel strand wires between the adjacent concrete prefabricated section and between concrete prefabricated section and the adjacent frame-type locking piece, the steel strand wires are used for establishing ties into grid structure with frame-type locking piece and concrete prefabricated section, all have the steel strand wires to pass in four through-holes that the concrete prefabricated section is inside to be groined type cross.

The frame-type locking block is a reinforced concrete structure built in the middle of the river bottom and comprises cross beams and longitudinal beams, the cross beams and the longitudinal beams form a grid structure at the river bottom, the concrete prefabricated blocks are distributed in grids, and steel strands penetrate through the cross beams or the longitudinal beams.

The concrete precast block is of a groined concrete structure, four through holes crossed in a groined shape are formed in the concrete precast block, and the four through holes are used for penetrating through steel strands.

And the steel strand penetrating through the frame type locking block is bound with a steel reinforcement cage of the frame type locking block.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the structure that the concrete precast block and the frame type locking block are combined is adopted on the upper portion of the river bottom anti-seepage structure, the river bottom anti-seepage performance is effectively improved, water flow is prevented from washing the river bottom, the concrete precast block is of a # -shaped structure, and the latticed structure formed after splicing can keep certain water seepage performance, can also keep the stability of a bentonite waterproof blanket and the anti-filtration geotextile, prolongs the service life of the anti-seepage structure, and ensures the service performance of the anti-seepage structure.

Drawings

FIG. 1 is a schematic view of a partial structure of the present invention

FIG. 2 is a schematic structural view of a concrete precast block;

wherein: 1. a frame-type locking block; 2. concrete precast blocks; 3. steel strand wires; 4. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1, the utility model discloses a river bottom scour protection structure of a river channel water storage area, which comprises frame-type locking blocks 1 built in the middle of the river bottom and concrete precast blocks 2 laid in the frame-type locking blocks 1, wherein steel stranded wires 3 are arranged between the adjacent concrete precast blocks 2 and between the concrete precast block 2 and the adjacent frame-type locking block 1 in a penetrating way, the steel stranded wires 3 are used for connecting the frame-type locking blocks 1 and the concrete precast blocks 2 in series into a grid-shaped structure, and the steel stranded wires 3 are arranged in four through holes 4 crossed in a groined shape in the concrete precast blocks 2; the frame type locking block 1 is a reinforced concrete structure built in the middle of a river bottom and comprises cross beams and longitudinal beams, the cross beams and the longitudinal beams form a grid structure at the river bottom, the concrete prefabricated blocks 2 are distributed in a grid in a staggered mode, and steel stranded wires 3 penetrate through the cross beams or the longitudinal beams; the concrete precast block 2 (see attached figure 2) is of a groined concrete structure, four through holes which are crossed in a groined shape are formed in the concrete precast block, and the four through holes 4 are used for penetrating through the steel strand 3; the steel strand 3 penetrating through the frame type locking block 1 is bound with the steel reinforcement cage of the frame type locking block 1

The utility model discloses a river bottom seepage prevention structure is located the river course middle part, river bottom seepage prevention structure includes backfill basic unit, clay bed course, the waterproof blanket of bentonite, clay protective layer, anti-geotechnological cloth, bed course, scour protection structure and the excavation material backfill layer that sets up from bottom to top, backfill basic unit, clay bed course, clay protective layer and bed course all are compaction after the pavement.

The clay bed course 8 thickness among the river bottom seepage prevention structure is 20-30cm, and clay protective layer 7 thickness is 30-40cm, and 3 thicknesses on bed course are 20-30cm, and the frame-type locking piece is reinforced concrete structure, and its thickness is 40-50cm, and the waterproof blanket of bentonite 9 overlap joint width of laying among the river bottom seepage prevention structure is 50cm, the utility model discloses an scour protection structure is located the bed course top, and scour protection structure construction finishes the back, fills the excavation material in it, and the scour protection structure's aim at prevents that rivers from excessively erodeing backfill material and the seepage prevention structure of below.

The concrete precast block selects the groined type structure for use in the structure, C20 concrete precast block thickness 15cm, and the precast block design structure is shown in figure 2, and hinge type concrete precast block is connected with the steel strand wires to in frame-type locking piece connection, mainly used river bottom region, hinge type concrete precast block top after the connection covers the material backfill layer of digging of 0.5m thick.

In the concrete construction process, after finishing the construction of the bentonite waterproof blanket, the inverse filter geotextile and the cushion layer, placing a concrete precast block above the cushion layer, reserving the positions of a cross beam and a longitudinal beam in the process of placing the concrete precast block, simultaneously, penetrating a steel strand through a through hole of the concrete precast block, penetrating the steel strand in the transverse direction and the longitudinal direction, connecting the ends of the steel strand by adopting a rope clamp, ensuring the continuity of the steel strand, enabling the concrete precast block to form an integral grid structure under the action of the steel strand, when in the construction of the cross beam and the longitudinal beam, firstly not binding a main reinforcement at the bottom layer of the steel reinforcement cage, placing the steel reinforcement cage without the main reinforcement at the bottom layer in place, ensuring the steel strand to penetrate the steel reinforcement cage, binding the main reinforcement at the bottom layer of the steel reinforcement cage after finishing the placement of the concrete precast block and the penetration of the steel strand, binding the steel strand with the main reinforcement at the bottom layer, finally, and, in order to adapt to the characteristic of expansion caused by heat and contraction caused by cold of concrete, expansion joints are arranged in stages on the beams and the longitudinal beams of the frame type locking block, plastic foam plates are filled in the expansion joints, and the expansion joints of two adjacent beams or longitudinal beams are arranged in a staggered joint mode, so that the integral mechanical property of the frame type locking block is ensured.

In a word, the utility model discloses an adopt the structure that concrete prefabricated section and frame-type locking piece combined together on river bottom seepage prevention structure upper portion, effectively improve the river bottom and prevent the water fluke ability, avoid rivers to erode the river bottom, the concrete prefabricated section is groined type structure, and the latticed structure that forms after the concatenation can keep certain infiltration performance, can also keep the stability of bentonite waterproof blanket and anti-geotechnological cloth of straining, prolongs seepage prevention structure's life, ensures its performance.

Claims (4)

1. The utility model provides a river bottom scour protection structure of river course water storage area which characterized in that: including building by laying bricks or stones at frame-type locking piece (1) of river bottom middle part and concrete prefabricated section (2) of spreading in frame-type locking piece (1), wear to establish steel strand wires (3) between adjacent concrete prefabricated section (2) and between concrete prefabricated section (2) and adjacent frame-type locking piece (1), steel strand wires (3) are used for establishing ties frame-type locking piece (1) and concrete prefabricated section (2) into latticed structure, all have steel strand wires (3) to pass in concrete prefabricated section (2) inside four through-holes (4) that are groined type cross.

2. The river bottom erosion prevention structure of the river channel water storage area according to claim 1, characterized in that: the frame type locking block (1) is a reinforced concrete structure built in the middle of a river bottom and comprises cross beams and longitudinal beams, the cross beams and the longitudinal beams form a grid structure at the river bottom, the concrete precast blocks (2) are distributed in a grid, and the steel stranded wires (3) penetrate through the cross beams or the longitudinal beams.

3. The river bottom erosion prevention structure of the river channel water storage area according to claim 2, characterized in that: the concrete precast block (2) is of a groined concrete structure, four through holes which are crossed in a groined shape are formed in the concrete precast block, and the four through holes (4) are used for penetrating through the steel strand (3).

4. The river bottom erosion prevention structure of the river channel water storage area according to claim 3, characterized in that: and the steel strand (3) penetrating through the cross beam and the longitudinal beam is bound with a steel reinforcement cage of the frame type locking block (1).

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