CN110306491A - A kind of river channel ecology bank protection construction technique - Google Patents

Abstract

The invention discloses a river channel ecological bank revetment construction process, which is divided into the A section of the main stream, the B section of the main stream, the C section of the tributary, the D section of the tributary, and the E section of the tributary. During the construction of section A of the main stream, the first construction method adopts the composite form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the form of tiled ecological frame slope protection. During the construction of the B section of the main stream, the first construction method also adopts the composite form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the composite form of building gabion gabion retaining wall + ecological block slope protection form, the third construction method adopts the form of building a secondary retaining wall. During the construction of the C section of the tributary, the form of dry block stone retaining wall shall be constructed. During the construction of the D river section of the tributary, a composite form of planting stepped ecological frame retaining wall + turf slope protection is adopted. During the construction of the E section of the tributary, a low retaining wall with buried stone concrete is adopted. The invention ensures a wide variety of ecological forms.

Description

A construction technology for river ecological bank protection

technical field

The invention relates to a construction technology for river channel ecological revetment.

Background technique

In recent years, under the pressure of economic development and population growth, the water consumption of Chinese residents has increased sharply. Discharging into the river will cause the ecological environment of the water body to be unbalanced and the environmental problems will be prominent. Therefore, improving the quality of water environment is an urgent and arduous task.

The main method of river course management is ecological revetment. However, there are many factors to be considered for ecological revetment, such as:

(1) Under the conditions of the land use, combined with the terrain of the river bank, the slope can be as gentle as possible, and the vertical hard retaining wall is not built in principle;

(2) Provide animals and plants with food, habitat, spawning and shelters according to local conditions and taking into account ecology;

(3) Combined with the water level characteristics of the specific river section, factors such as environmental landscape, project cost, construction conditions, wind and wave characteristics, etc. shall be considered as a whole;

(4) The principle of combining with the overall planning of cities and towns should be followed, and local embankments should be arranged in combination with the overall planning.

To sum up, adopting a structural form that is in harmony with the surrounding natural landscape and ensuring a variety of ecological forms on the premise of satisfying project safety has always been a problem that people in the industry are committed to researching.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art and provide a river ecological revetment construction process, which adopts a structural form coordinated with the surrounding natural landscape, and ensures various ecological forms on the premise of satisfying engineering safety.

The purpose of the present invention is achieved like this: a kind of river course ecological revetment construction technology, divides main stream A river section, main stream B river section, tributary C river section, tributary D river section, tributary E river section to carry out construction;

When carrying out the construction of the A section of the main stream, two construction methods are adopted. The first construction method adopts the composite form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the form of tiled ecological frame slope protection ;

When constructing the low retaining wall with buried stone concrete, first use C20 cast-in-place concrete to build the foundation of the low retaining wall, and then use C20 concrete buried stone to build the low wall on the foundation of the low retaining wall; The front part of the wall foundation is provided with a wall toe and a tooth wall; the slope of the facing surface of the low wall is 1:0.3, and the slope of the back surface is 1:0.1; The top surface of the body is provided with a dramatic stone-pressed roof: an expansion joint with a width of 0.2m is set every 15m between the low wall body and the low retaining wall foundation, and the joint is filled with asphalt slurry; a drainage joint is installed every 2m in the low wall body. Each drainage pipe is covered with a layer of geotextile, and the outlet of the drainage pipe is 0.75m away from the foundation;

When carrying out ecological block slope protection, first build a slope with a slope of 1:1.5 on both sides of the river, then lay a layer of geotextile on the slope, then lay ecological blocks, and then fill in the ecological holes of the ecological blocks Plant soil and plant turf, and finally use roadside stones to press the top of the slope protection;

When carrying out the slope protection of the tiled ecological frame, first build a slope with a slope of 1:2 on both sides of the river, then lay a layer of geotextile and a layer of gravel on the slope, and then pave the tiled ecological frame; Each tiled ecological frame is filled with gravel and planting soil from bottom to top, and mixed grass seeds are sown in the planting soil; the foot protection of the slope protection is made of C20 cast-in-place concrete, the foot protection is buried at a depth of 1m, and the foot protection is set every 15m An expansion joint with a width of 0.2m is filled with asphalt slurry; the top of the slope protection is topped with curb stones;

When carrying out the construction of the B section of the main stream, three construction methods are adopted. The first construction method also adopts the compound form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the construction of gabion gabion retaining wall +The composite form of ecological block slope protection, the third construction method adopts the form of building a secondary retaining wall;

When constructing the gabion retaining wall, first use C20 cast-in-place concrete to build the foundation of the retaining wall, and then build the gabion retaining wall on the top surface of the foundation; And the tooth wall; the gabion gabion retaining wall is composed of the lower gabion gabion and the upper gabion gabion; the width of the lower gabion is 1.67 times the width of the upper gabion, and the lower gabion The pore size of the upper gabion is the same as that of the upper gabion; the lower gabion and the upper gabion are filled with block stones with a particle size of 1.5 to 2 times the pore size, and the exposed side uses block stones with a particle size not less than 2 times the pore size. Placement; use galvanized steel wire wrapped by PVC to bind the lower gabion gabion and the upper gabion gabion into a whole; set a layer of geotextile on the back of the gabion gabion retaining wall; The top surface is covered with a layer of planting soil for planting climbing vines;

When constructing the second-level retaining wall, first use C20 cast-in-place concrete to build the first-level retaining wall foundation, and then use C20 concrete buried stones to build the first-level retaining wall body on the first-level retaining wall foundation; the first-level retaining wall foundation The burial depth is 0.5m, and the front part of the first-level retaining wall foundation is provided with wall toes and tooth walls; the slope of the first-level retaining wall is 1:0.3 on the water-facing surface, and the slope on the back-water surface is 1:0.1; the first-level retaining wall The surface layer of the wall is built with M10 mortar masonry stones, the top surface of the first-level retaining wall is provided with a C20 concrete roof plate, and the first-level retaining wall and the first-level retaining wall foundation are provided with a width of 0.2m every 15m The expansion joints are filled with asphalt slurry; a drainage pipe is installed every 2m in the first-level retaining wall, and each drainage pipe is covered with a layer of geotextile, and the outlet of the drainage pipe is 0.75m away from the foundation;

The second-level retaining wall is located 2m behind the front end of the top plate of the first-level retaining wall; the foundation of the second-level retaining wall is first built with C20 cast-in-place concrete, and then the foundation of the second-level retaining wall is built with dry block stones The second-level retaining wall body; the second-level retaining wall foundation is buried at a depth of 0.5m, and the front part of the second-level retaining wall foundation is provided with a wall toe; the second-level retaining wall body is made of dry block stone, and the second-level retaining wall body The slope of the facing surface is 1:0.3, and the slope of the back surface is 1:0.1; the top surface of the second-level retaining wall is provided with a C20 concrete roof plate: the second-level retaining wall and the foundation of the second-level retaining wall are installed every 15m An expansion joint with a width of 0.2m is filled with asphalt slurry; a layer of geotextile is arranged on the back of the second-level retaining wall; imitation wood guardrails are also set on the top surface of the top plate of the second-level retaining wall;

When carrying out the construction of the C section of the tributary, adopt the form of constructing the dry block stone retaining wall, first use C20 cast-in-place concrete to build the wall foundation, and then use the dry block stone to build the wall body on the wall foundation; the buried depth of the wall body foundation 0.5m, set the wall toe and tooth wall at the front of the wall foundation; the slope of the facing water slope of the wall is 1:0.3, and the slope of the backwater slope is 1:0.1; the top surface of the wall is set with C20 concrete pressure roof: wall Set an expansion joint with a width of 0.2m every 15m between the body and the wall foundation, and fill the joint with asphalt slurry; a layer of geotextile is arranged on the back of the wall; and imitation wood guardrails are also set on the top surface of the top plate of the wall ;

When carrying out the construction of the D river section of the tributary, the composite form of building a plant-type stepped ecological frame retaining wall + turf slope protection is adopted;

When constructing the planting-type stepped ecological frame retaining wall, first use C20 cast-in-place concrete to build the retaining wall foundation, and then use the stepped ecological frame to construct the retaining wall body on the retaining wall foundation; the retaining wall foundation is buried at a depth of 0.75m, and the retaining wall foundation The front part of the wall is provided with a wall toe and a tooth wall; the slope of the retaining wall facing the water is 1:0.3, and the slope of the back surface is 1:0.3; each stepped ecological frame is filled with stones and planting soil in sequence from bottom to top, Emergent plants are planted in the planting soil; a layer of gravel and a layer of geotextile are laid in sequence behind the retaining wall;

When carrying out turf slope protection, first build a slope with a slope of 1:2 on both sides of the river, and then lay planting soil on the slope and plant turf;

When carrying out the construction of the E section of the tributary, a low retaining wall of buried stone concrete is adopted.

The above-mentioned river channel ecological revetment construction technology, wherein, when performing the ecological block slope protection, the ecological block is a prefabricated reinforced concrete structure and the strength level is not lower than C25; Half of the lower ecological blocks are poured together with the pressure roof, and half of the uppermost ecological blocks are poured together with the curbstone; when adjacent ecological blocks are connected, the convex strip of one ecological block is stuck into the adjacent ecological block in the groove.

The above-mentioned river channel ecological revetment construction technology, wherein, when carrying out the construction of the main stream A river channel, the tiled ecological frame is a prefabricated reinforced concrete structure and the strength level is not lower than C30, and the tiled ecological frames are set at corners part of the screw connection.

The above-mentioned river channel ecological revetment construction technology, wherein, when carrying out tributary D river channel construction, the said stepped ecological frame is a prefabricated reinforced concrete structure and the strength level is not lower than C30; the block stones filled in each stepped ecological frame are 150~ For river pebbles with a particle size of 200mm, bolt connection holes are provided on both sides of each stepped ecological frame, so that adjacent stepped ecological frames are connected by screws.

The river channel ecological revetment construction process of the present invention has the following characteristics: different types of revetment methods are adopted for different river flow rates, slope bank substrates and landscape requirements, and segmental treatment is carried out, which not only reduces the cost and reduces the impact on the environment, Make full use of the site's original river network system, mountain torrent channel, pit pond, wetland, etc. to integrate and connect, improve the regional flood control and drainage system, enrich biodiversity, play the function of wetland conservation and purification, create a good habitat space, and build an urban rainwater corridor , give full play to the role of rivers in regulating and storing rain and floods, and embody the ecological wisdom of being friends with floods. At the same time, it provides a comfortable environment for residents, improves the image of surrounding villages, and promotes the sustainable development of the ecological environment on both sides of the river.

Description of drawings

Fig. 1 is the sectional view of the composite form of building buried stone concrete low retaining wall+ecological block slope protection when carrying out the construction of main stream A river section in the river channel ecological bank protection construction technology of the present invention;

Fig. 2 is the laying schematic diagram of ecological block;

Fig. 3 is the sectional view of the form of adopting the form of tiling ecological frame slope protection when carrying out the construction of main stream A river section in the river channel ecological bank protection construction technology of the present invention;

Fig. 4 is a splicing schematic diagram of a tiled ecological frame;

Fig. 5 is the sectional view of the composite form of building gabion gabion retaining wall+ecological block slope protection when carrying out the construction of main stream B river section in the river channel ecological revetment construction technology of the present invention;

Fig. 6 is the sectional view that adopts the form of building secondary retaining wall when carrying out the construction of main stream B river section in the river course ecological revetment construction technology of the present invention;

Fig. 7 is the sectional view of the form of building a dry block stone retaining wall when carrying out tributary C river section construction in the river channel ecological revetment construction technology of the present invention;

Fig. 8 is the sectional view of the composite form of constructing the vegetation type stepped ecological frame retaining wall+turf slope protection when carrying out tributary D river section construction in the river channel ecological revetment construction technology of the present invention;

Fig. 9 is a structural schematic diagram of a stepped ecological frame;

Fig. 10 is a cross-sectional view of building a low retaining wall with buried stone concrete when carrying out the construction of the tributary E river section in the river channel ecological bank revetment construction technology of the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

The river channel involved in the river channel ecological revetment construction process of the present invention includes an upstream river section A and a downstream main stream B river section, and the main stream A river section has a tributary C river section, a tributary D river section and a tributary E river section from top to bottom.

The river channel ecological revetment construction technology of the present invention is divided into main stream A section, main stream B section, tributary C section, tributary D section, and tributary E section for construction.

When carrying out the construction of the A section of the main stream, two construction methods are adopted. The first construction method adopts the composite form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the form of tiled ecological frame slope protection ;

When constructing the low retaining wall with buried stone concrete, first use C20 cast-in-place concrete to build the low retaining wall foundation 10, and then use C20 concrete buried stones to build the low retaining wall body 11 on the low retaining wall foundation 10; the low retaining wall foundation 10 is buried at a depth of 0.5 m, the front part of the low retaining wall foundation 10 is provided with a wall toe with a width of 0.5m and a tooth wall with a width of 0.5m; The slope is 1:0.1; the surface layer of the low wall 11 is made of M10 mortar with a thickness of 0.25m to build block stones, and the top surface of the low wall 11 is set with a 0.2m-thick dramatic stone top plate 12: the low wall 11 Set an expansion joint with a width of 0.2m every 15m with the low retaining wall foundation 10, and use asphalt slurry to fill the joint; set a drainage pipe 13 every 2m in the low wall body 11, and each drainage pipe 13 is covered with a layer of geotechnical Cloth, the water outlet of the drain pipe 13 is 0.75m away from the low retaining wall foundation 10.

When carrying out ecological block slope protection, first use backfill soil to build a slope with a slope of 1:1.5 on both sides of the river, and then lay a layer of 400g/ ^m2 geotextile 14 on the slope as a reverse filter layer. The connection length is not less than 300mm, and then pave the ecological block 16, then fill the planting soil 15 in the ecological hole 160 of the ecological block 16, and plant turf, and finally use the curb stone to press the top 17 on the top of the slope protection, and the curb stone 17 Thickness × width = 0.2m × 0.35m (see Figure 1); the ecological block 16 is a prefabricated reinforced concrete structure and the strength grade is not lower than C25; Half of the block is poured together with the top plate, and half of the uppermost ecological block is poured together with the curbstone; when adjacent ecological blocks are connected, the convex strip 161 of an ecological block 16 is stuck into the adjacent ecological block. In the groove 162 (see Figure 2).

When carrying out flat ecological frame slope protection, first build a slope with a slope of 1:2 on both sides of the river, and then lay a layer of 400g/ ^m2 geotextile 21 and a layer of gravel with a thickness of 200mm on the slope. 22 as an anti-filter layer, the lap length of the geotextile 21 is not less than 300mm, and then the tiled ecological frame 23 (seeing figure 3) is paved; the thickness of the tiled ecological frame 23 is 0.3m, and each tiled ecological frame Frame 23 is filled with crushed stones with a thickness of 100mm and planting soil with a thickness of 200mm from bottom to top in order, and mixed grass seeds are sown in the planting soil; the foot protection 20 of the slope protection adopts C20 cast-in-situ concrete, and the foot protection 20 is buried at a depth of 1m. Set an expansion joint with a width of 0.2m every 15m at the foot 20, and use asphalt slurry to fill the joint; use curb stone 24 to press the top of the slope protection, and the thickness of the curb stone 24 × width = 0.2m × 0.35m. The tiled ecological frame 23 is a reinforced concrete structure with a strength grade not lower than C30, and each tiled ecological frame 23 is connected by a screw 230 at a corner (see FIG. 4 ).

When carrying out the construction of the B section of the main stream, three construction methods are adopted. The first construction method also adopts the compound form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the construction of gabion gabion retaining wall +The composite form of ecological block slope protection, the third construction method adopts the form of building a secondary retaining wall;

When building the gabion retaining wall, first use C20 cast-in-place concrete to build the foundation 30 of the retaining wall, and then build the gabion retaining wall 31 on the top surface of the foundation 30; A wall toe with a width of 0.5m and a tooth wall with a width of 0.5m are set at the front; the gabion retaining wall 31 is placed on the top surface of the foundation 30; the gabion retaining wall 31 is placed on the top surface of the foundation 30 The upper lower gabion gabion 311 and the upper gabion gabion 312 placed on the top rear portion of the lower gabion gabion 311 constitute; the length × width × height of the lower gabion gabion 311=4m × 1.25m × 0.75m; the length × width × height of the upper gabion gabion 312=4m × 0.75m × 0.75m, the aperture of the lower gabion gabion 311 and the upper gabion gabion 312 is 10cm × 12cm; the aquatic animals can wear into the gabion; the lower gabion gabion 311 and the upper gabion gabion 312 are filled with block stones with a particle size of 1.5 to 2 times the aperture, and placed on the exposed side with a particle size not less than 2 times the aperture; The lower gabion gabion 311 and the upper gabion gabion 312 are bound together by galvanized steel wire wrapped in PVC; a layer of 400g/ ^m2 geotextile 32 is set on the back of the gabion gabion retaining wall 31 as a reverse filter, The overlapping length of the geotextile 32 is not less than 300 mm; the top surface of the gabion gabion retaining wall 31 is covered with a layer of 10 cm thick planting soil 33 for planting climbing vines.

Gabion gabion retaining wall has strong erosion resistance, high porosity, good permeability and good ecology.

When performing ecological block slope protection, first build a slope with a slope of 1:1.5 on both sides of the river, and then lay a layer of 400g/ ^m2 geotextile 34 on the slope as a filter layer. The lap length of geotextile 34 No less than 300mm, then pave the ecological block 36; fill the holes of the ecological block 36 with planting soil, and plant turf; use curb stone 37 to press the top of the slope protection, and the thickness of the curb stone 37 × width = 0.2m × 0.35m (see Figure 5).

When constructing the secondary retaining wall, first use C20 cast-in-place concrete to build the first-level retaining wall foundation 40a, and then use C20 concrete to bury stones on the first-level retaining wall foundation 40a to build the first-level retaining wall body 41a; the first-level The retaining wall foundation 40a has a buried depth of 0.5m, and the front part of the first-stage retaining wall foundation 40a is provided with a wall toe with a width of 0.5m and a tooth wall with a width of 0.5m; the height of the first-stage retaining wall body 41a is 1.5m, and the top The width is 0.7m, the slope of the upstream surface is 1:0.3, and the slope of the back surface is 1:0.1; the surface layer of the first-stage retaining wall 41a is made of M10 mortar with a thickness of 0.25m. The top surface of the wall 41a is provided with a C20 concrete roof plate 42a with a thickness of 0.2m: the first-stage retaining wall body 41a and the first-stage retaining wall foundation 40a are provided with an expansion joint with a width of 0.2m every 15m, and asphalt slurry is used Filling: a drainage pipe 43 is set every 2m in the first-level retaining wall body 41a, each drainage pipe 43 is covered with a layer of geotextile, and the water outlet of the drainage pipe 43 is 0.75m away from the first-level retaining wall foundation 40a.

The second-level retaining wall is set 2m behind the front end of the top plate of the first-level retaining wall, and the foundation 40b of the second-level retaining wall is first built with C20 cast-in-place concrete, and then dry blocks are used on the foundation 40b of the second-level retaining wall Build the second-level retaining wall body 41b with stone; the second-level retaining wall foundation 40b is buried at a depth of 0.5m, and the front part of the second-level retaining wall foundation 40b is provided with a wall toe with a width of 0.3m; The width is 0.7m, the slope of the upstream surface is 1:0.3, and the slope of the back surface is 1:0.1; the top surface of the second-level retaining wall body 41b is provided with a C20 concrete roof plate 42b with a thickness of 0.2m: the second-level retaining wall The body 41b and the second-level retaining wall foundation 40b are provided with an expansion joint with a width of 0.2m every 15m, and the joints are filled with asphalt slurry; a layer of geotextile 44 is arranged on the back of the second-level retaining wall body 41b; the second-level An imitation wood guardrail 45 (see FIG. 6 ) is also arranged on the top surface of the top plate 42b of the retaining wall body 41b.

When carrying out the construction of the river section C of the tributary, adopt the form of constructing the dry block stone retaining wall, first adopt C20 cast-in-place concrete to build the body of wall foundation 50, then adopt dry block stone to build the body of wall 51 on the body of wall foundation 50; The foundation 50 is buried at a depth of 0.5m, and the front part of the wall foundation 50 is provided with a wall toe with a width of 0.5m and a tooth wall with a width of 0.5m; the top width of the wall 51 is 0.7m, and the slope of the facing surface is 1:0.3. The slope of the backside is 1:0.1; the top surface of the wall 51 is provided with a C20 concrete roof plate with a thickness of 0.2m: the wall 51 and the wall foundation 50 are provided with an expansion joint with a width of 0.2m every 15m, and asphalt Grout caulking; the back side of body of wall 51 also arranges one deck geotextile 53; The imitation wood guardrail 54 (seeing Fig. 7) is also set on the top surface of the top plate 52 of body of wall 51.

When carrying out the construction of the D river section of the tributary, the composite form of building a plant-type stepped ecological frame retaining wall + turf slope protection is adopted;

When constructing the planting-type stepped ecological frame retaining wall, first use C20 cast-in-place concrete to build the retaining wall foundation 60, and then adopt the stepped ecological frame structure 62 to build the retaining wall body 61 on the retaining wall foundation 60; the retaining wall foundation 60 is buried 0.75m deep, the front portion of the retaining wall foundation 60 is provided with a wall toe with a width of 0.5m and a tooth wall with a width of 0.5m; 0.3, the slope of the backside is 1:0.3; the stepped ecological frame 62 is filled with 0.3m thick rocks and 0.2m thick planting soil 65 from bottom to top, and emergent plants are planted in the planting soil; the retaining wall 61 A layer of gravel 64 with a thickness of 300mm and a layer of 400g/m ² geotextile 63 are successively laid on the back as the reverse filter layer, and the lap length of the geotextile 63 is not less than 300mm (see Figure 8). The stepped ecological frame 62 is a prefabricated reinforced concrete structure and its strength level is not lower than C30. The stones filled in each stepped ecological frame 62 are river pebbles with a particle size of 150-200mm. The two sides of each stepped ecological frame 62 Bolt connection holes 620 (see FIG. 9 ) are all provided, so that adjacent stepped ecological frames 62 are connected by screws.

The vegetation-type stepped ecological frame retaining wall has good structural integrity, good permeability, and strong impact resistance. Plants can grow in the ecological frame, and the greening rate can reach more than 25%. The ecological landscape effect is good, and it is convenient for construction. , fast and other characteristics.

When carrying out turf slope protection, first build a slope with a slope of 1:2 on both sides of the river, then lay planting soil on the slope, and plant turf66.

When carrying out the construction of the E section of the tributary, adopt the form of building a low retaining wall with buried stone concrete; first use C20 cast-in-place concrete to build the low retaining wall foundation 70, and then use C20 concrete buried stone to build the low wall body 71 on the low retaining wall foundation; The low retaining wall foundation 70 has a buried depth of 0.5m, and the front part of the low retaining wall foundation 70 is provided with a wall toe with a width of 0.5m and a tooth wall with a width of 0.5m; The slope of the back surface is 1:0.1; the surface layer of the low wall 71 is made of M10 mortar with a thickness of 0.25m to build block stones, and the top surface of the low wall 71 is set with C20 concrete with a thickness of 0.2m. Board 72: set an expansion joint with a width of 0.2m every 15m between the low wall body 71 and the low retaining wall foundation 70, and fill the joint with asphalt slurry; set a drainage pipe 73 every 2m in the low wall body 71, each The drainage pipe 73 is covered with a layer of geotextile, and the water outlet of the drainage pipe 73 is 0.75m away from the low retaining wall foundation 70 (see Figure 10).

The above embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent The technical solutions should also belong to the category of the present invention and should be defined by each claim.

Claims (4)

1. a kind of river course ecological revetment construction technology, divides main stream A river section, main stream B river section, tributary C river section, tributary D river section, tributary E river section to carry out construction, is characterized in that, When carrying out the construction of the A section of the main stream, two construction methods are adopted. The first construction method adopts the composite form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the form of tiled ecological frame slope protection ; When constructing the low retaining wall with buried stone concrete, first use C20 cast-in-place concrete to build the foundation of the low retaining wall, and then use C20 concrete buried stone to build the low wall on the foundation of the low retaining wall; The front part of the wall foundation is provided with a wall toe and a tooth wall; the slope of the facing surface of the low wall is 1:0.3, and the slope of the back surface is 1:0.1; The top surface of the body is provided with a dramatic stone-pressed roof: an expansion joint with a width of 0.2m is set every 15m between the low wall body and the low retaining wall foundation, and the joint is filled with asphalt slurry; a drainage joint is installed every 2m in the low wall body. Each drainage pipe is covered with a layer of geotextile, and the outlet of the drainage pipe is 0.75m away from the foundation; When carrying out ecological block slope protection, first build a slope with a slope of 1:1.5 on both sides of the river, then lay a layer of geotextile on the slope, then lay ecological blocks, and then fill in the ecological holes of the ecological blocks Plant soil and plant turf, and finally use roadside stones to press the top of the slope protection; When carrying out the slope protection of the tiled ecological frame, first build a slope with a slope of 1:2 on both sides of the river, then lay a layer of geotextile and a layer of gravel on the slope, and then pave the tiled ecological frame; Each tiled ecological frame is filled with gravel and planting soil from bottom to top, and mixed grass seeds are sown in the planting soil; the foot protection of the slope protection is made of C20 cast-in-place concrete, the foot protection is buried at a depth of 1m, and the foot protection is set every 15m An expansion joint with a width of 0.2m is filled with asphalt slurry; the top of the slope protection is topped with curb stones; When carrying out the construction of the B section of the main stream, three construction methods are adopted. The first construction method also adopts the compound form of building buried stone concrete low retaining wall + ecological block slope protection, and the second construction method adopts the construction of gabion gabion retaining wall +The composite form of ecological block slope protection, the third construction method adopts the form of building a secondary retaining wall; When constructing the gabion retaining wall, first use C20 cast-in-place concrete to build the foundation of the retaining wall, and then build the gabion retaining wall on the top surface of the foundation; And the tooth wall; the gabion gabion retaining wall is composed of the lower gabion gabion and the upper gabion gabion; the width of the lower gabion is 1.67 times the width of the upper gabion, and the lower gabion The pore size of the upper gabion is the same as that of the upper gabion; the lower gabion and the upper gabion are filled with block stones with a particle size of 1.5 to 2 times the pore size, and the exposed side uses block stones with a particle size not less than 2 times the pore size. Placement; use galvanized steel wire wrapped by PVC to bind the lower gabion gabion and the upper gabion gabion into a whole; set a layer of geotextile on the back of the gabion gabion retaining wall; The top surface is covered with a layer of planting soil for planting climbing vines; When constructing the second-level retaining wall, first use C20 cast-in-place concrete to build the first-level retaining wall foundation, and then use C20 concrete buried stones to build the first-level retaining wall body on the first-level retaining wall foundation; the first-level retaining wall foundation The burial depth is 0.5m, and the front part of the first-level retaining wall foundation is provided with wall toes and tooth walls; the slope of the first-level retaining wall is 1:0.3 on the water-facing surface, and the slope on the back-water surface is 1:0.1; the first-level retaining wall The surface layer of the wall is built with M10 mortar masonry stones, the top surface of the first-level retaining wall is provided with a C20 concrete roof plate, and the first-level retaining wall and the first-level retaining wall foundation are provided with a width of 0.2m every 15m The expansion joints are filled with asphalt slurry; a drainage pipe is installed every 2m in the first-level retaining wall, and each drainage pipe is covered with a layer of geotextile, and the outlet of the drainage pipe is 0.75m away from the foundation; The second-level retaining wall is located 2m behind the front end of the top plate of the first-level retaining wall; the foundation of the second-level retaining wall is first built with C20 cast-in-place concrete, and then the foundation of the second-level retaining wall is built with dry block stones The second-level retaining wall body; the second-level retaining wall foundation is buried at a depth of 0.5m, and the front part of the second-level retaining wall foundation is provided with a wall toe; the second-level retaining wall body is made of dry block stone, and the second-level retaining wall body The slope of the facing surface is 1:0.3, and the slope of the back surface is 1:0.1; the top surface of the second-level retaining wall is provided with a C20 concrete roof plate: the second-level retaining wall and the foundation of the second-level retaining wall are installed every 15m An expansion joint with a width of 0.2m is filled with asphalt slurry; a layer of geotextile is arranged on the back of the second-level retaining wall; imitation wood guardrails are also set on the top surface of the top plate of the second-level retaining wall; When carrying out the construction of the C section of the tributary, adopt the form of constructing the dry block stone retaining wall, first use C20 cast-in-place concrete to build the wall foundation, and then use the dry block stone to build the wall body on the wall foundation; the buried depth of the wall body foundation 0.5m, set the wall toe and tooth wall at the front of the wall foundation; the slope of the facing water slope of the wall is 1:0.3, and the slope of the backwater slope is 1:0.1; the top surface of the wall is set with C20 concrete pressure roof: wall Set an expansion joint with a width of 0.2m every 15m between the body and the wall foundation, and fill the joint with asphalt slurry; a layer of geotextile is arranged on the back of the wall; and imitation wood guardrails are also set on the top surface of the top plate of the wall ; When carrying out the construction of the D river section of the tributary, the composite form of building a plant-type stepped ecological frame retaining wall + turf slope protection is adopted; When constructing the planting-type stepped ecological frame retaining wall, first use C20 cast-in-place concrete to build the retaining wall foundation, and then use the stepped ecological frame to construct the retaining wall body on the retaining wall foundation; the retaining wall foundation is buried at a depth of 0.75m, and the retaining wall foundation The front part of the wall is provided with a wall toe and a tooth wall; the slope of the retaining wall facing the water is 1:0.3, and the slope of the back surface is 1:0.3; each stepped ecological frame is filled with stones and planting soil in sequence from bottom to top, Emergent plants are planted in the planting soil; a layer of gravel and a layer of geotextile are laid in sequence behind the retaining wall; When carrying out turf slope protection, first build a slope with a slope of 1:2 on both sides of the river, and then lay planting soil on the slope and plant turf; When carrying out the construction of the E section of the tributary, a low retaining wall of buried stone concrete is adopted. 2. The river channel ecological revetment construction process according to claim 1, characterized in that, when carrying out the slope protection of the ecological block, the ecological block is a prefabricated reinforced concrete structure and the strength grade is not lower than C25; During construction, dry laying is adopted layer by layer. Half of the ecological blocks on the bottom layer are poured together with the top plate, and half of the ecological blocks on the top layer are poured together with the curbstones; when adjacent ecological blocks are connected, the The ribs snap into the grooves of adjacent eco-blocks. 3. The river channel ecological revetment construction process according to claim 1, characterized in that, when carrying out the main stream A river channel construction, the tiled ecological frame is a prefabricated reinforced concrete structure and the strength grade is not lower than C30, and each block is tiled The type ecological frames are connected by screws arranged at the corners. 4. The river channel ecological revetment construction technique according to claim 1, wherein, when carrying out tributary D river channel construction, the stepped ecological frame is a prefabricated reinforced concrete structure and the strength grade is not less than C30; each stepped ecological frame The stones filled in the frame are river pebbles with a particle size of 150-200mm. Bolt connection holes are provided on both sides of each stepped ecological frame, so that adjacent stepped ecological frames are connected by screws.