CN109083096B - Step-shaped ecological slope protection structure of reservoir hydro-fluctuation belt and implementation method thereof - Google Patents

Step-shaped ecological slope protection structure of reservoir hydro-fluctuation belt and implementation method thereof Download PDF

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CN109083096B
CN109083096B CN201810897511.6A CN201810897511A CN109083096B CN 109083096 B CN109083096 B CN 109083096B CN 201810897511 A CN201810897511 A CN 201810897511A CN 109083096 B CN109083096 B CN 109083096B
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slope
concrete
vegetation
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hydro
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CN109083096A (en
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刘汉龙
陈志雄
丁选明
杨鹏
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Chongqing University Industrial Technology Research Institute
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Chongqing University Industrial Technology Research Institute
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/14Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Revetment (AREA)

Abstract

The invention provides a step-shaped ecological slope protection structure of a reservoir hydro-fluctuation belt and an implementation method thereof. The vegetation slope protection technology and the engineering slope protection technology are combined, and the advantages of the vegetation slope protection technology and the engineering slope protection technology are played. On one hand, along with the growth of plants, small cracks generated by rigid reinforcement measures can be covered to a certain extent, and the phenomenon that the small cracks are eroded by waves to form larger and larger holes is prevented. On the other hand, the erosion resistance of the hard measures can also provide protection for the substrate on which the vegetation is grown. The invention not only ensures the stability of the rock-soil body of the hydro-fluctuation belt, but also realizes the recovery of vegetation of the hydro-fluctuation belt, and achieves the harmonious unification of human activities and natural environment.

Description

Step-shaped ecological slope protection structure of reservoir hydro-fluctuation belt and implementation method thereof
Technical Field
The invention relates to the technical field of rock-soil slope protection, in particular to a step-shaped ecological slope protection of a reservoir area hydro-fluctuation belt and an implementation method thereof.
Background
With the successful water storage and operation of the hydro-junction such as the three gorges dam and the like, the reservoir water level fluctuates in a range of more than ten meters or even dozens of meters due to natural factors or reservoir scheduling and other reasons, and an area where the reservoir area is periodically submerged and exposed out of the water surface is formed and is called as a reservoir area hydro-fluctuation belt. In some areas with large gradient, rapid water flow and serious wave scouring, vegetation in the hydro-fluctuation belt is easy to damage to form bald areas, and the deterioration of rock and soil properties of the hydro-fluctuation belt and the slope collapse are accelerated.
The traditional treatment measures for bank slopes of riverways, lakes, reservoirs and the like are 'hard' engineering slope protection measures such as plain-sprayed concrete layers or grouted rubbles and the like, but the measures have great limitation in the ecological management of watersheds. Although the sprayed or grouted rubble side slope has strong anti-water flow scouring capability, once the surface is tiny and damaged, the surge directly contacts with the bank slope soil body, the impact pressure generated when the surge impacts the slope surface to be broken is added, the soil body is soaked by water for a long time and is in a saturated state, so that the soil body is low in strength, the impact pressure can cause soil body particles to move, the soil body particles gradually migrate outwards, and in addition, partial substances of the soil are dissolved in the water body, and the interior of the bank slope for a long time is hollowed out to form huge holes, so that the slope stability is not facilitated. In addition, the plain-sprayed concrete layer or the grouted rubble cannot be coordinated with the surrounding landscape and does not conform to the principle of ecological tourism construction in a drainage basin, so that the plain-sprayed concrete layer or the grouted rubble is not suitable for large-area application in a reservoir area.
With the increasing attention of human beings to the problem of ecological environment in recent years, some 'soft' slope ecological management measures and ecological riparian zone construction technologies are developed by carrying out ecological transformation on the traditional riparian zone slope protection technology. However, for high and steep or rock slopes, the plant growth substrate is difficult to attach to the slope, or the growth substrate is easy to be washed away by waves and is difficult to grow. The construction technology of ecological river bank zones such as a gabion bank protection, a mesh bag type soil-covered bank protection and the like is only suitable for bank slopes in still water flow areas or bank slopes with small flow rate and small flow.
Disclosure of Invention
The invention aims to provide a step-shaped ecological slope protection structure of a falling belt in a reservoir area, which is characterized in that a plurality of horizontal steps poured with dry concrete are arranged on a slope on the falling belt. And a primary slope is arranged between the adjacent horizontal steps.
And the lower end of each grade of slope is provided with a concrete prefabricated straining beam. And the lower part of the concrete precast tie beam is contacted with the horizontal step. The precast concrete straining beam is provided with a plurality of anchor holes for anchor rods to pass through. And the concrete prefabricated tie beam is fixed by inserting the anchor hole and driving the anchor rod in the slope.
And a plurality of vegetation form porous concrete prefabricated modules are paved above the concrete prefabricated tie beam. The vegetation form porous concrete prefabricated module is a hollow concrete block with an open upper end. And after planting substrates are filled into the cavity of the plant growth type porous concrete prefabricated module and plants resistant submerged plants are planted, a layer of sandstone is paved.
Furthermore, the vertical height difference between two adjacent horizontal steps is 2-3 m, and the width of each horizontal step is 0.7-1.0 m.
Furthermore, the upper end face of the vegetation type porous concrete prefabricated module is provided with a stilling ridge. The flood-resistant plant is selected from Bermuda grass.
Furthermore, the vegetation form porous concrete precast modules are paved in a staggered mode, so that staggered joints are formed between the upper layer and the lower layer.
The invention also provides an implementation method of the step-shaped ecological slope protection structure of the hydro-fluctuation belt in the reservoir area, which is characterized by comprising the following steps of:
it is worth explaining that the invention combines the vegetation slope protection technology and the engineering slope protection technology to play the advantages of the vegetation slope protection technology and the engineering slope protection technology. On one hand, along with the growth of plants, small cracks generated by rigid reinforcement measures can be covered to a certain extent, and the phenomenon that the small cracks are eroded by waves to form larger and larger holes is prevented. On the other hand, the erosion resistance of the hard measures can also provide protection for the substrate on which the vegetation is grown. The invention not only ensures the stability of the rock-soil body of the hydro-fluctuation belt, but also realizes the recovery of vegetation of the hydro-fluctuation belt, and achieves the harmonious unification of human activities and natural environment.
S1, clearing the side slope of the hydro-fluctuation belt: and (4) carrying out slope cutting and cleaning on the crushed rock-soil mass on the slope surface of the hydro-fluctuation belt in the reservoir area.
And S2, prefabricating a plurality of sections of concrete beams. And (4) prefabricating a vegetation type porous concrete prefabricating module.
S3, construction of horizontal steps: and constructing horizontal steps on the rock-soil body slope at certain intervals, wherein rock-soil slopes are arranged between every two adjacent horizontal steps. The horizontal step is formed by pouring cement on the rock-soil slope.
S4, construction of the slope concrete anchor rod tie beam: and laying prefabricated concrete beams on each horizontal step, wherein the concrete beams are connected end to form a concrete prefabricated straining beam on the horizontal step.
An anchor rod is arranged on the slope, and a horizontal concrete anchor rod straining beam is fixed at the lower end of each grade of slope.
S5, construction of the concrete precast modules on the slope: and paving a layer of sand stone as a cushion layer on each level of slope.
S6: and (3) paving prefabricated vegetation type porous concrete prefabricated modules from bottom to top in sequence from the position of a concrete anchor rod tie beam at the bottom of the slope.
Furthermore, the vegetation form porous concrete precast modules are arranged in a staggered manner, so that vertical through seams are avoided.
The advantages and effects of the invention are:
(1) the prefabricated vegetation type concrete module is laid on the slope surface of the slope protection, the water-logging-resistant plant bermuda grass is planted in the module cavity, the module cavity can protect plant production matrix from being washed away during the water logging period, water can be effectively stored and rainfall can be collected in the rainfall period, the plant growth is guaranteed, and the ecological protection of the slope protection and the beautiful effect of environmental coordination are achieved.
(2) The building blocks are distributed in a staggered manner, so that the building blocks cannot form vertical through seams, and the overall stability can be enhanced; when the surge impacts the slope, the water flow direction needs to be changed for many times to pass through the building block, so that the surge kinetic energy can be weakened to a greater extent;
(3) due to the action of the graded aggregate covered on the surface of the plant growing matrix, the wave kinetic energy is further reduced, and the scouring force on the plant growing matrix is correspondingly reduced;
(4) the force eliminating ridges arranged on the building blocks can shorten the runoff path of water flow on the slope surface, and further reduce the destructive power of surge on the bank slope.
(5) The horizontal steps are favorable for the requirements of slope and plant maintenance, pedestrians and the like.
(6) The slope protection module can be prefabricated, does not need large-scale machinery during construction, uses less material, and the construction is more simple and convenient, has reduced the cost.
Drawings
FIG. 1 is an elevational view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
fig. 3 is an elevation view of an ecological slope protection module of the present invention;
in the figure: the method comprises the following steps of 1-slope, 2-horizontal step, 3-vegetation type porous concrete prefabricated module, 4-module cavity, 5-reinforced concrete tie beam, 6-anchor rod, 7-submergence-resistant plant, 8-gravel, 9-plant planting matrix and 10-stillness ridge.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the utility model provides an ecological slope protection structure of reservoir area hydro-fluctuation belt step form which characterized in that:
on the slope on the falling zone, be provided with horizontal step 2 that a plurality of dry concrete were pour. Between adjacent horizontal steps 2 is a one-step slope 1. The vertical height difference between two adjacent horizontal steps 2 is 2-3 m, and the width (depth from a position far away from the side slope to a position close to the side slope) of each horizontal step 2 is 0.7-1.0 m.
The lower end of each stage of slope 1 is provided with a reinforced concrete tie beam 5. The lower part of the reinforced concrete tie beam 5 is in contact with the horizontal step 2. The reinforced concrete tie beam 5 has a plurality of anchor holes through which anchor rods 6 pass. The reinforced concrete tie beam 5 is fixed by inserting the anchor hole and driving the anchor rod 6 inside the slope 1.
And a plurality of vegetation form porous concrete prefabricated modules 3 are paved above the reinforced concrete tie beams 5.
Referring to fig. 3, the vegetation form porous concrete precast module 3 is a hollow concrete block with open upper and lower ends, a length of 0.5 to 1.0m, a width of 0.25 to 0.5m, a height of 0.25 to 0.5m, and a wall thickness of 0.08 to 0.1 m. Further, the upper edge (upper edge) of the upper end surface of the vegetation type porous concrete prefabricated module 3 is provided with a stilling ridge 10. The absorption sill 10 is a rectangular corrugated tooth and is arranged at two opposite upper edges (upper edges) of the vegetation type porous concrete prefabricated module 3. The two upper edges are parallel to the reinforced concrete tie beam 5. The two rectangular wave-like teeth on the upper edge are offset as shown in fig. 3.
And after the plant growing type porous concrete prefabricated module 3 is filled with a plant growing matrix 9 and plants resistant submerged plants 7, a layer of sand 8 is paved. The flood-resistant plant 7 is selected from bermuda grass and the like.
The vegetation form porous concrete prefabricated modules 3 are paved in a staggered mode, so that staggered joints are formed between the upper layer and the lower layer.
Example 2:
the embodiment is directed to the implementation method of the step-like ecological slope protection structure of the hydro-fluctuation belt in the reservoir area in embodiment 1, and is characterized by comprising the following steps:
s1, clearing the side slope of the hydro-fluctuation belt: and (4) carrying out slope cutting and cleaning on the crushed rock-soil mass on the slope surface of the hydro-fluctuation belt in the reservoir area.
And S2, prefabricating a plurality of sections of concrete beams, wherein each section is 5 meters long. And prefabricating a vegetation type porous concrete prefabricating module 3. The section of the concrete beam is rectangular, the height is 0.2-0.25 m, and the width is 0.2-0.25 m.
S3, construction of the horizontal step 2: horizontal steps 2 are constructed on the rock-soil body slope at certain intervals, and slopes 1 are arranged between every two adjacent horizontal steps. The horizontal step 2 is formed by pouring cement on the rock slope.
S4, construction of the slope concrete anchor rod tie beam: and laying prefabricated concrete beams on each horizontal step 2, wherein the concrete beams are connected end to form a reinforced concrete tie beam 5 on the horizontal step 2.
An anchor rod 6 is arranged on the slope, and a horizontal reinforced concrete tie beam 5 is fixed at the lower end of each grade of slope 1. The anchor rod length is 5 ~ 10 m.
S5, construction of the concrete precast modules on the slope: and a layer of graded sand stone is paved on each grade of slope 1 as a cushion layer, and the thickness is 5 cm.
S6: and (3) paving the prefabricated vegetation type porous concrete prefabricated modules 3 from bottom to top in sequence from the position of the concrete reinforced concrete tie beam 5 at the bottom of the slope 1. The vegetation form porous concrete precast modules 3 are arranged in a staggered manner, so that vertical through seams are avoided.

Claims (1)

1. The utility model provides an implementation method of ecological slope protection structure of reservoir area hydro-fluctuation belt step form which characterized in that:
a plurality of horizontal steps (2) for pouring dry concrete are arranged on the slope on the hydro-fluctuation belt; a slope (1) is arranged between the adjacent horizontal steps (2);
laying prefabricated concrete beams on each horizontal step (2), wherein the concrete beams are connected end to form a concrete prefabricated straining beam (5) on the horizontal step (2); the lower end of each grade of slope (1) is provided with a concrete prefabricated straining beam (5); the lower part of the concrete precast tension beam (5) is contacted with the horizontal step (2); the concrete prefabricated tie beam (5) is provided with a plurality of anchor holes for anchor rods (6) to pass through; the concrete prefabricated tie beam (5) is fixed by inserting the anchor hole and driving the anchor rod (6) in the slope (1);
a plurality of vegetation form porous concrete prefabricated modules (3) are paved above the concrete prefabricated tie beam (5); the vegetation form porous concrete prefabricated module (3) is a hollow concrete block with an opening at the upper end and the lower end; a planting substrate (9) is filled in a cavity of the plant-growing type porous concrete prefabricated module (3), and a layer of sandstone (8) is paved after flooding-resistant plants (7) are planted;
the vertical height difference between two adjacent horizontal steps (2) is 2-3 m;
the upper end surface of the vegetation form porous concrete prefabricated module (3) is provided with a stilling ridge (10); said submergence-resistant plant (7) is selected from the group consisting of bermuda grass;
the vegetation form porous concrete prefabricated modules (3) are paved in a staggered manner, so that staggered joints are formed between the upper layer and the lower layer;
during construction, the method comprises the following steps:
s1, clearing the side slope of the hydro-fluctuation belt: carrying out slope cutting and cleaning on the crushed rock-soil mass on the slope surface of the hydro-fluctuation belt in the reservoir area;
s2, prefabricating a plurality of sections of concrete beams; prefabricating a vegetation type porous concrete prefabricating module (3);
s3, construction of the horizontal step (2): constructing a horizontal step (2) on the rock-soil body slope at a certain height interval, wherein a slope (1) is arranged between every two adjacent horizontal steps; the horizontal step (2) is formed by pouring cement on a rock slope;
s4, construction of the slope concrete anchor rod tie beam: laying prefabricated concrete beams on each horizontal step (2), wherein the concrete beams are connected end to form a concrete prefabricated straining beam (5) on the horizontal step (2);
an anchor rod (6) is arranged on the slope, and a horizontal concrete prefabricated tie beam (5) is fixed at the lower end of each grade of slope (1);
s5, construction of the concrete precast modules on the slope: a layer of sand stone is paved on each level of slope (1) as a cushion layer;
s6: and (3) sequentially laying the prefabricated vegetation type porous concrete prefabricated modules (3) from bottom to top from the position of the concrete prefabricated tie beam (5) at the bottom of the slope (1).
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CN110042799A (en) * 2019-04-28 2019-07-23 徐盼 A kind of protection slope structure
CN110093899A (en) * 2019-05-15 2019-08-06 中水淮河规划设计研究有限公司 A kind of Seawall safeguard structure of efficient joint energy dissipating
CN110438940A (en) * 2019-07-09 2019-11-12 重庆大学产业技术研究院 A kind of floatation type ecology TGXG and its method for administering falling zone
CN112970469A (en) * 2021-04-15 2021-06-18 长江水利委员会长江科学院 Ecological restoration structure for hydro-fluctuation belt in reservoir area
CN115262469A (en) * 2022-08-08 2022-11-01 广东岭秀科技有限公司 Ecological restoration method for reservoir hydro-fluctuation belt

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CN102409637B (en) * 2011-08-16 2013-06-05 中国科学院武汉植物园 Ecological restoration method of hydro-fluctuation belt
CN106149734A (en) * 2016-06-21 2016-11-23 西安科技大学 A kind of ground protective slope structure and construction method thereof
CN106223350B (en) * 2016-09-29 2018-11-27 福州大学 A kind of concrete frame ecological slope protection module, slope protection and its installation method
CN106351238B (en) * 2016-10-17 2019-02-01 三峡大学 Plant cover concrete Double-protection selvage slope ecology greening system and the method for carrying out slope ecological greening using the system

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