CN220013546U - Concrete lattice slope protection for downstream dam slope of earth-rock dam - Google Patents

Abstract

The utility model discloses a concrete lattice slope protection for a downstream dam slope of a soil-rock dam, which comprises a concrete lattice beam formed by sequentially arranging and splicing a plurality of splicing units, and a humus soil grass planting layer paved in each lattice of the concrete lattice beam; each splicing unit is of a cross structure formed by a longitudinal beam and a cross beam, the upper end of the longitudinal beam is provided with a longitudinal splicing groove, the lower end of the longitudinal beam is provided with a longitudinal splicing bulge, the left end of the cross beam is provided with a transverse splicing groove, and the right end of the cross beam is provided with a transverse splicing bulge; the cross beam is provided with a pair of drain holes respectively positioned at the left side and the right side of the longitudinal beam, the pore canal direction of the drain holes is consistent with the length direction of the longitudinal beam, and the water facing surfaces of the cross beam positioned at the left side and the right side of the drain holes are inclined slope surfaces for water collection towards the orifice. The utility model has the advantages that the erosion resistance and the landscape effect of the revetment are maintained, the factory prefabrication processing is realized, the laying difficulty is reduced, and the construction efficiency is improved; in addition, water can be effectively drained, and accumulated water in the frame lattice of the concrete frame lattice beam is avoided.

Description

Concrete lattice slope protection for downstream dam slope of earth-rock dam

Technical Field

The utility model relates to the technical field of hydraulic engineering, in particular to a concrete lattice slope protection for a downstream dam slope of a earth-rock dam.

Background

At present, the downstream dam slope of the earth-rock dam in the hydraulic engineering is usually in the forms of ecological turf slope protection, concrete slope protection, dry masonry block stone slope protection, turf slope protection in concrete frame and the like, and the slope protection forms have advantages and disadvantages.

Although ecological turf slope protection has better ecology and landscape, the erosion resistance is poor, and after rainfall, a gully, a deluge groove and the like are easily formed on the surface of the turf slope protection, so that the attractiveness is affected, and the slope protection needs to be maintained continuously.

Although the concrete slope protection has good scouring resistance and high construction speed, the concrete slope protection has poor ecology and landscape property.

Although the dry masonry block revetment has good scouring resistance, the dry masonry block revetment is limited by local stones, and along with the continuous improvement of the environmental protection and treatment requirements, the difficulty of block stone exploitation is also increased.

The grass-planted slope protection in the concrete lattice is to pour the lattice beam by using concrete, and plant grass is planted in the lattice beam, which has certain scouring resistance and also gives attention to the landscape effect, but because the lattice beam is flush with the top surface of the grass, the slope rainwater can not be effectively blocked if heavy rain is encountered, and a gully and a rain gully can still be formed on the surface of the slope protection; in addition, the current concrete frame grid beam is an integrated frame grid beam directly cast on a dam slope, so that water is easy to accumulate on the lower edge of each frame grid of the concrete frame grid beam to cause the rotten planted turf, the whole concrete frame grid beam cannot realize factory prefabrication processing, meanwhile, due to the slope surface structure of the dam slope, the casting difficulty of the cast-in-place concrete frame grid beam directly on the slope protection is relatively large, the construction efficiency is low, the variability of the whole concrete frame grid beam is poor, and the matching performance of the whole concrete frame grid beam to dam slopes in different forms is poor.

Disclosure of Invention

The utility model aims to provide a concrete lattice slope protection for a downstream dam slope of a earth-rock dam.

In order to achieve the above purpose, the present utility model may adopt the following technical scheme:

the utility model discloses a concrete lattice slope protection for a downstream dam slope of a concrete-stone dam, which comprises a concrete lattice beam formed by sequentially arranging and splicing a plurality of splicing units, and a humus soil grass planting layer paved in each lattice of the concrete lattice beam; each splicing unit is of a cross structure formed by a longitudinal beam and a cross beam which are vertically and crosswise arranged, a longitudinal splicing groove is formed in the upper end of each longitudinal beam, a longitudinal splicing protrusion matched and butted with the longitudinal splicing groove is formed in the lower end of each longitudinal beam, a transverse splicing groove is formed in the left end of each cross beam, and a transverse splicing protrusion matched and butted with the transverse splicing groove is formed in the right end of each cross beam; the cross beam is provided with a pair of drain holes respectively positioned at the left side and the right side of the longitudinal beam, the pore canal direction of the drain holes is consistent with the length direction of the longitudinal beam, and the water facing surfaces of the cross beams positioned at the left side and the right side of the drain holes are inclined slope surfaces for water collection to the orifice.

Further, the thickness of the humus soil grass planting layer is lower than the depth of each sash of the concrete frame lattice beam, so that the humus soil grass planting layer is effectively prevented from forming a gully or a deluge gully on the surface of the rainfall scouring surface, and at the moment, the drain hole is positioned above the surface of the humus soil grass planting layer, so that rainwater accumulated on the upstream surface of the cross beam can be effectively discharged.

Further, the drain hole is a PVC drain pipe buried in the cross beam, the PVC drain pipe is convenient to obtain materials, and the drain hole can be directly buried when a spliced unit is poured and processed, so that the processing process of the drain hole on the cross beam is simplified.

The utility model has the advantages that the concrete frame beams on the dam slope are formed by arranging the spliced units in turn, and the humus soil grass planting layer is paved in each frame of the concrete frame beams, so that the concrete frame slope with turf planted therein is formed, the erosion resistance and the landscape effect of the slope are maintained, the factory prefabrication processing can be realized, the paving difficulty of the concrete frame beams on the dam slope surface is reduced, the construction efficiency of the concrete frame slope is improved, and the adaptability to different forms of dam slopes is enhanced; in addition, the drainage hole arranged on the cross beam of each splicing unit is matched with the inclined slope surface of the inclined water accumulation on the upstream surface of the cross beam, so that water accumulation in the frame lattice of the concrete frame lattice beam can be effectively avoided, dam safety is prevented from being influenced by water accumulation and seepage, and the service lives of a dam slope and a concrete frame lattice slope protection are prolonged.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an enlarged view of the splice unit of fig. 1.

Fig. 3 is an enlarged sectional view of A-A in fig. 1.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

As shown in FIG. 1, the concrete lattice slope protection of the downstream dam slope of the earth-rock dam comprises concrete lattice beams paved on the downstream dam slope of the earth-rock dam, and particularly, the concrete lattice beams are formed by sequentially arranging and splicing a plurality of splicing units 1 along the gradient direction and the length direction of the dam slope, as shown in FIG. 2, each splicing unit 1 is of a cross structure formed by a longitudinal beam 1.1 and a transverse beam 1.2 which are vertically and alternately arranged, the longitudinal beam 1.1 and the transverse beam 1.2 are integrally cast, so that the factory prefabrication processing of the splicing units 1 is realized, and the splicing units 1 are directly conveyed to a construction site for splicing and paving when the concrete lattice slope protection is paved. Of course, in order to enable the splicing units 1 to be sequentially arranged and spliced along the gradient direction and the length direction of a dam slope, a longitudinal splicing groove 1.3 is arranged at the central position of the upper end of the longitudinal beam 1.1, and a longitudinal splicing protrusion 1.4 matched and butted with the longitudinal splicing groove 1.3 is arranged at the central position of the lower end of the longitudinal beam 1.1, so that two groups of splicing units 1 adjacent to each other up and down can be butted and fixedly connected together; the transverse splicing groove 1.5 is arranged at the center of the left end of the cross beam 1.2, and the transverse splicing bulge 1.6 which is matched and butted with the transverse splicing groove 1.5 is arranged at the center of the right end of the cross beam 1.2, so that two groups of splicing units 1 adjacent left and right can be butted and fixedly connected together.

The humus soil grass planting layer 2 is paved in each frame of the concrete frame grid beam, specifically, as shown in fig. 3, the humus soil grass planting layer 2 is formed by backfilling humus soil at the lower part and grass planting at the upper part, and the thickness of the humus soil grass planting layer 2 is lower than the depth of each frame of the concrete frame grid beam, so that the humus soil grass planting layer 2 can be effectively prevented from being subjected to rainfall erosion to form a gully or a rain gully.

In addition, as the splicing units 1 are tiled on the slope surface of the dam, the formed concrete frame grid beams also have an inclination angle consistent with the slope surface of the dam, and water can be easily accumulated at the lower edge of each frame of the concrete frame grid beams; in order to effectively remove accumulated water, a pair of drain holes 1.7 respectively positioned at the left side and the right side of the longitudinal beam 1.1 are arranged on the cross beam 1.2, the drain holes 1.7 can be PVC drain pipes, and the drain holes 1.7 can be directly pre-buried in the cross beam 1.2 when the splicing unit 1 is prefabricated, so that the channel direction of the drain holes 1.7 is only required to be consistent with the length direction of the longitudinal beam 1.1, and the drain holes 1.7 are ensured to be positioned above the surface of the humus grass planting layer 2 to be paved; of course, since the splicing unit 1 can be prefabricated, the height position of the drain hole 1.7 can be directly limited when the splicing unit 1 is prefabricated, and the thickness of the humus grass planting layer 2 can be paved according to the position of the drain hole 1.7 when the humus grass planting layer 2 is paved in construction. In addition, the upstream surface of the cross beam 1.2 positioned at the left side and the right side of the drain hole 1.7 can be processed into a slope surface 1.8 for water accumulation at the position of the orifice, so that accumulated water can be effectively drained.

When the splicing unit 1 is specifically processed, the longitudinal beam 1.1 and the transverse beam 1.2 can be integrally cast and formed by adopting reinforced concrete, so that the width of the cross section of the longitudinal beam 1.1 is 0.3m, the height of the cross section is 0.5m, the width of the end face of the transverse beam 1.2 is 0.3m, the height of the end face of the transverse beam is 0.5m, and the size of a rectangular frame lattice surrounded by the four groups of splicing units 1 is 3 x 3m, thereby improving the anti-scouring effect of the concrete frame lattice beam surrounded by the splicing units 1. When the splicing unit 1 is poured, the PVC drain pipe with the length of 0.3m and phi of 75mm can be directly pre-buried in the cross beam 1.2, and the pre-buried height of the PVC drain pipe is limited to be positioned at the position 0.3m above the bottom surface of the cross beam 1.2, so that the drain hole 1.7 on the cross beam 1.2 is formed.

When the dam slope of the downstream of the earth-rock dam is constructed on site, firstly, the splicing units 1 are paved according to the slope surface size of the dam slope, the splicing units 1 form concrete frame beams positioned on the slope surface, then, the humus soil grass planting layer 2 is paved into each frame of the concrete frame beams, the paving thickness of the humus soil grass planting layer 2 is 0.3m, the thickness of the humus soil grass planting layer 2 is ensured to be lower than the frame depth of the concrete frame beams, and meanwhile, the drain holes 1.7 are tightly attached to the upper part of the surface of the humus soil grass planting layer 2, so that the paving of the concrete frame slope of the dam slope of the downstream of the earth-rock dam is completed.

Claims (3)

1. The utility model provides a concrete sash bank protection of earth-rock dam low reaches dam slope which characterized in that: the device comprises a concrete frame grid beam formed by sequentially arranging and splicing a plurality of splicing units, and a humus soil grass planting layer paved in each frame of the concrete frame grid beam; each splicing unit is of a cross structure formed by a longitudinal beam and a cross beam which are vertically and crosswise arranged, a longitudinal splicing groove is formed in the upper end of each longitudinal beam, a longitudinal splicing protrusion matched and butted with the longitudinal splicing groove is formed in the lower end of each longitudinal beam, a transverse splicing groove is formed in the left end of each cross beam, and a transverse splicing protrusion matched and butted with the transverse splicing groove is formed in the right end of each cross beam; the cross beam is provided with a pair of drain holes respectively positioned at the left side and the right side of the longitudinal beam, the pore canal direction of the drain holes is consistent with the length direction of the longitudinal beam, and the water facing surfaces of the cross beams positioned at the left side and the right side of the drain holes are inclined slope surfaces for water collection to the orifice.

2. The earth-rock dam downstream dam slope concrete lattice slope protection of claim 1, wherein: the thickness of the humus soil grass planting layer is lower than the depth of each frame lattice of the concrete frame lattice beam, and the drain hole is positioned above the surface of the humus soil grass planting layer.

3. The earth-rock dam downstream dam slope concrete lattice slope protection of claim 1, wherein: the drain hole is a PVC drain pipe buried in the cross beam.