CN213358669U - Cast-in-place notch cuttype of exempting from to tear down mould is from irrigating ecological gravity type barricade - Google Patents

Abstract

The utility model relates to a cast-in-place stepped self-irrigation ecological gravity retaining wall without dismantling a mould, which consists of a block retaining wall, cast-in-place concrete, an irrigation system and green plants; the block retaining wall is formed by splicing prefabricated planting blocks and prefabricated retaining wall blocks at intervals; the cast-in-place concrete is positioned on the backwater side of the block retaining wall and is filled in the arc-shaped cavity of the prefabricated planting block and the cavity of the upright post of the prefabricated retaining wall block; the irrigation system comprises a water storage tank, a purification groove, an irrigation pipe, a water pumping pipe, a water pump and power generation equipment; the green plants include aquatic plants below the water level line, terrestrial plants above the water level line, and purifying plants in the purifying grooves. Adopting the prefabricated building blocks with the planting grooves to form an outer vertical surface of the retaining wall, and serving as a retaining wall pouring template; adjacent building blocks are spliced by dovetail grooves, and upper and lower layers of building blocks are spliced by splicing grooves and tenons; carry out green planting and plant formation ecological landscape retaining wall in planting the inslot, the person that falls into water accessible holds the planting groove lateral wall in hand, effectively accomplishes saving oneself and saving oneself each other.

Description

Cast-in-place notch cuttype of exempting from to tear down mould is from irrigating ecological gravity type barricade

Technical Field

The utility model relates to a steep bank cast in situ concrete gravity type barricade of height, concretely relates to cast-in-place notch cuttype of exempting from to tear open mould is from irrigating ecological gravity type barricade.

Background

Traditional river course barricade mainly has grout stone or dry masonry barricade, cast in situ concrete barricade and precast concrete block barricade etc. and traditional gravity type barricade is because of taking up an area of advantage such as few, technological maturity, safe and reliable, is widely used in engineering projects such as water conservancy, municipal administration, road. Through numerous engineering applications, the following problems have been found to remain: 1. the traditional retaining wall is mainly used for treating the side slope to meet the stability requirement, the ecological function is usually ignored, the growth and inhabitation environment of amphibians, aquatic plants, fishes, insects and microorganisms is destroyed, the biodiversity is reduced, the water purifying capacity of a river channel is greatly reduced, and the requirement is inconsistent with the ecological civilization construction requirement in China; 2. the outer vertical surface of the retaining wall is monotonous and dark, and the landscape effect is poor; 3. the high-steep gravity type retaining wall has no pedal hand-grasping part for unfortunate drowning people, is difficult to climb and self-rescue or mutual rescue, increases the difficulty for bank rescuers, and increases the legal risk of a management unit; 4. when the cast-in-place concrete retaining wall is constructed, a template needs to be erected, the steps of erecting and dismantling the template are increased, and the construction period is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at to the problem that exists in the construction of current cast in situ concrete gravity type barricade, proposed exempt from cast-in-place notch cuttype from irrigating ecological gravity type barricade, adopted following technical scheme.

The form-stripping-free cast-in-place stepped self-irrigation ecological gravity retaining wall consists of a block retaining wall, cast-in-place concrete, an irrigation system and green plants; the block retaining wall is formed by splicing prefabricated planting blocks and prefabricated retaining wall blocks at intervals; the top of the prefabricated planting block is provided with a through-length splicing tenon, the bottom of the prefabricated planting block is provided with a through-length splicing groove, two side edges are respectively provided with a splicing dovetail groove which can be spliced with each other, the side of the prefabricated planting block close to the water is provided with planting grooves, greening holes are uniformly arranged at intervals outside the planting grooves, and the side of the prefabricated planting block opposite to the water is provided with an arc-shaped cavity subjected to rough treatment; a macadam water storage layer and a soil planting layer are sequentially arranged in the planting groove from bottom to top, a waterproof layer is arranged at the contact part of the macadam water storage layer and the prefabricated planting block planting groove, and a reverse filtering layer is arranged at the contact part of the soil planting layer and the prefabricated planting block planting groove; the prefabricated retaining wall building blocks are provided with splicing tenons, splicing grooves and splicing dovetail grooves which are the same as the prefabricated planting building blocks in size and position; the water side of the prefabricated retaining wall building block is provided with a U-shaped planting groove, and the water side of the prefabricated retaining wall building block is provided with a stand column cavity; the cast-in-place concrete is positioned on the backwater side of the block retaining wall and is filled in the arc-shaped cavity of the prefabricated planting block and the cavity of the upright post of the prefabricated retaining wall block; the bottom of the cast-in-place concrete is provided with a foundation and a cushion layer; the irrigation system comprises a water storage tank, a purification groove, an irrigation pipe, a water pumping pipe, a water pump and power generation equipment; the water storage tank and the purification groove are arranged in soil filled at the top of the block retaining wall, the periphery of the water storage tank is provided with a waterproof layer, the top of the water storage tank is provided with an access cover, and two sides of the water storage tank body are respectively provided with an orifice connected with the purification groove and the irrigation pipe; the bottom of the purification groove is provided with a waterproof layer, a second filter layer and a first filter layer are respectively arranged on the waterproof layer, and the second filter layer is communicated with the water storage tank body through a water pipe; the irrigation pipe comprises a connecting pipe connected with the water storage tank body, a vertical irrigation main pipe arranged inside a layer of prefabricated retaining wall building block at the top of the building block retaining wall and irrigation branch pipes transversely connected with the prefabricated planting building block planting grooves on the two sides; the bottom of the water pumping pipe is arranged below a normal water level, and the water pumping pipe body is arranged inside the cavity of the upright post; the water pump is connected to the bottom of the water pumping pipe; the power generation equipment is arranged above the water level line; green planting including locate below normal water level system plant the building block plant inslot with prefabricated barricade building block U type plant the inslot aquatic plant, above the normal water level prefabricated plant the building block plant inslot with prefabricated barricade building block U type plant inslot land plants, purify the inslot purify the type plant, the lawn on the gentle slope.

Preferably, the block retaining wall is provided with a prefabricated retaining wall block with the same height as the prefabricated planting block at intervals of 4-10 m.

Preferably, adjacent prefabricated planting building blocks between, prefabricated planting building block and prefabricated barricade building block pass through the concatenation dovetail concatenation to adopt the mortar pointing to bond, vertically by prefabricated planting building block or the prefabricated barricade building block of the same type through concatenation recess and concatenation tenon connection.

Preferably, the end part of the prefabricated planting building block is provided with an end plate with a hole, when the length of the prefabricated planting building block exceeds 1m, a middle reinforcing plate is arranged in the middle of the prefabricated planting building block, and the size of the prefabricated planting building splicing groove is 5-10 mm larger than that of the splicing tenon.

Preferably, the top of the cast-in-place concrete foundation is provided with a tenon corresponding to the splicing groove of the prefabricated planting block and the prefabricated retaining wall block.

Preferably, the U-shaped planting groove is not arranged in the first layer of prefabricated retaining wall building block at the top of the building block retaining wall, a pipe groove with the diameter 5-10 mm larger than that of the connecting pipe is arranged in the center of the top of the building block, and a gap between the pipe groove and the connecting pipe is blocked by mortar; the position connected with the prefabricated planting block planting groove is provided with an irrigation branch pipe, and the vertical direction is provided with an irrigation main pipe connected with the horizontal direction irrigation branch pipe and the pipe groove.

Preferably, the purification groove is arranged at the top of the gravity type retaining wall in a through-length mode or at intervals, the water pumping pipe and the water pump are arranged at the upstream position of a river channel or at the upstream position of the purification groove, and the water storage tanks are arranged at the tops of the prefabricated retaining wall building blocks at intervals.

Preferably, irrigation system with the water in the river course through the drinking-water pipe take out purify the ditch inslot, through purifying to filter the back store inside the water storage box, the rethread irrigation pipe is used for planting the inslot plant and irrigates.

Preferably, the end parts of the irrigation pipe and the water pumping pipe are provided with filter screens.

Preferably, the first filter layer is a gravel filter layer with larger grain diameter, and the second filter layer is a gravel filter layer with smaller grain diameter.

The utility model relates to a technical scheme, the beneficial effect who compares with the conventional art is:

1. the utility model adopts the prefabricated planting blocks with planting grooves and the prefabricated retaining wall blocks to be piled up mutually to form the outer vertical surface of the retaining wall, and the gravity type retaining wall is formed by pouring concrete on the back side of the retaining wall, thus having the advantages of small occupied area, mature technology, safety, reliability and the like;

2. the arc-shaped cavity and the upright post cavity are respectively arranged at the back of the prefabricated planting block and the prefabricated retaining wall block, so that the prefabricated planting block and the prefabricated retaining wall block can be reliably connected with cast-in-place concrete at the back of the block, and the prefabricated block can be used as a cast-in-place concrete baffle plate, so that the support and the removal of a template in the concrete construction process are reduced, and the construction efficiency is improved;

4. the left and right adjacent prefabricated planting blocks are spliced with the prefabricated retaining wall blocks and the prefabricated planting blocks by dovetail grooves, and the upper and lower layers of blocks are spliced by splicing grooves and splicing tenons, so that the construction quality of the retaining wall of the block is guaranteed, and the construction efficiency of the retaining wall of the block is improved;

5. the prefabricated planting blocks are provided with the planting grooves, so that a good living environment can be provided for plants and river channel animals, and the water purifying capacity of the river channel is improved; the person falling into the water can grasp the side wall of the planting groove by hands and then climb up to the top of the bank slope step by step, so that self rescue and mutual rescue are effectively completed, and the life safety of the person falling into the water is ensured;

6. the water pumping pipe and the water pump are arranged at the upstream position, water in the river is pumped and discharged into the purification groove, and is purified for three times by the purification type green plant, the first filter layer and the second filter layer and then discharged into the water storage tank or the municipal pipe network, so that the quality of irrigation and municipal water is improved;

7. through setting up irrigation system, guarantee that ecological planting inslot plant moisture is sufficient, the barricade is close to the water side and is formed the beautiful view of the good ecological of growing trend, has fine view effect.

Drawings

FIG. 1 is a schematic view of a formwork-dismantling-free cast-in-place stepped self-irrigation ecological gravity retaining wall in elevation;

FIG. 2 is a side sectional view (section A-A in FIG. 1) of a prefabricated planting block of a demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall structure;

FIG. 3 is a middle section view (section B-B in FIG. 1) of a prefabricated planting block of a demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall structure;

FIG. 4 is a side sectional view (section C-C in FIG. 1) of a prefabricated retaining wall block of a demolition-free cast-in-place stepped self-irrigating ecological gravity retaining wall structure;

FIG. 5 is a sectional view of the middle of a prefabricated retaining wall block of a demolition-free cast-in-place stepped self-irrigating ecological gravity retaining wall structure (section D-D in FIG. 1);

FIG. 6 is a schematic sectional view (section E-E in FIG. 1) of the assembly of the prefabricated planting blocks with the prefabricated retaining wall;

FIG. 7 is a schematic sectional view (F-F section in FIG. 1) of the top precast planting blocks and precast retaining wall;

FIG. 8 is a schematic view of a prefabricated planting block construction;

FIG. 9 is a side cross-sectional view of a prefabricated planting block (section 1-1 in FIG. 8);

FIG. 10 is a cross-sectional view of the middle of a prefabricated planting block (section 2-2 in FIG. 8);

FIG. 11 is an elevation view of a prefabricated planting block (section view 3-3 in FIG. 10);

FIG. 12 is a vertical connecting view of adjacent prefabricated planting blocks (section 3-3 in FIG. 10);

FIG. 13 is an elevational view of a prefabricated planting block (section view 4-4 in FIG. 10);

FIG. 14 is a vertical connecting view of adjacent prefabricated planting blocks (section 4-4 in FIG. 10);

FIG. 15 is a schematic cross-sectional view of the middle of the prefabricated planting block after green planting is completed;

FIG. 16 is a three-dimensional schematic view of a middle section of a prefabricated planting block after green planting construction is completed;

fig. 17 is a schematic view of a prefabricated retaining wall block construction;

fig. 18 is a three-dimensional schematic view of a middle section of a prefabricated retaining wall block;

fig. 19 is a two-dimensional cross-sectional side view of a precast retaining wall block (section 5-5 in fig. 17);

fig. 20 is a two-dimensional schematic side cross-sectional view of a precast retaining wall block (section 6-6 in fig. 17);

FIG. 21 is a schematic view of a prefabricated retaining wall block structure with irrigation pipes;

FIG. 22 is a three-dimensional schematic view of a middle section of a prefabricated retaining wall block with irrigation tubes;

FIG. 23 is a two-dimensional cross-sectional side view of a prefabricated wall block with irrigation tubes (section 7-7 in FIG. 21);

figure 24 is a self-irrigation system and water flow diagram.

The figure is marked with: 1-river channel, 2-foundation, 3-bedding, 4-normal water level, 5-filling, 6-prefabricated planting block, 61-planting groove, 62-dovetail groove, 63-splicing groove, 64-splicing tenon, 65-middle reinforcing plate, 66-arc cavity, 67-greening hole, 68-rough treatment, 69-end plate, 7-green plant, 71-land plant, 72-aquatic plant, 73-purifying plant, 74-lawn, 8-gentle slope, 9-gravel water storage layer, 10-soil planting layer, 11-waterproof layer, 12-inverted filter layer, 13-prefabricated retaining wall block, 131-upright post cavity, 132-U planting groove, 14-water storage tank, 15-maintenance cover, 16-purifying groove, 161-first filter layer, 162-second filter layer, 17-irrigation pipe, 171-irrigation main pipe, 172-irrigation branch pipe, 173-connecting pipe, 18-water pumping pipe, 19-water pump, 20-power generation equipment, 21-electric wire, 22-cast-in-place concrete, 23-pipe groove, 24-mortar plugging and 25-mortar pointing.

Detailed Description

In order to deepen understanding of the present invention, the embodiments of the present invention will be described in detail below with reference to fig. 1 to 24, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments are given, but the scope of protection of the present invention is not limited to the following embodiments.

In this embodiment, the height of the block retaining wall is 8m, the length of the prefabricated planting block 6 is 1.8m, the width is 1.0m (upper side + lower side), the height is 0.8m, and the size of the planting groove 61 is 1.8 × 0.5 × 0.6m (length × width × height); the length of the prefabricated retaining wall building block 13 is 0.8m, the width is 1.0m (the upper side and the lower side), and the height is 0.8 m; and one prefabricated retaining wall building block 13 is placed in each 4 prefabricated planting building blocks 6 of the block retaining wall for connection.

Referring to the attached drawing 1, the demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall is characterized by comprising a block retaining wall, cast-in-place concrete 22, an irrigation system and green plants 7; each prefabricated planting block 6 of the block retaining wall with the interval of 7.2m is provided with a prefabricated retaining wall block 13 with the same height as the prefabricated planting block 6.

As shown in the attached drawings 2-5, the cast-in-place concrete 22 is positioned on the backwater side of the block retaining wall and is filled in the arc-shaped cavity 66 of the prefabricated planting block 6 and the upright post cavity 131 of the prefabricated retaining wall block 13; the bottom of the cast-in-place concrete 22 is provided with a foundation 2 and a cushion layer 3; the green plants 7 comprise aquatic plants 72 arranged in the planting grooves 61 of the prefabricated planting blocks 6 below a normal water level of 4 and in the U-shaped planting grooves 132 of the prefabricated retaining wall blocks 13, terrestrial plants 71 arranged in the planting grooves 61 of the prefabricated planting blocks 6 above the normal water level of 4 and in the U-shaped planting grooves 132 of the prefabricated retaining wall blocks 13, purifying plants 73 in the purifying grooves 16 and lawns 74 on the gentle slope 8; the top of the cast-in-place concrete foundation 2 is provided with a tenon corresponding to the splicing groove of the prefabricated planting block and the prefabricated retaining wall block.

Referring to fig. 4 and 5, the top layer of the prefabricated retaining wall block 13 of the block retaining wall is not provided with the U-shaped planting groove 132, and referring to fig. 21 to 23, a pipe groove 23 which is 5 to 10mm larger than the diameter of the connecting pipe 173 is arranged at the center of the top of the block retaining wall, and a gap between the pipe groove 23 and the connecting pipe 173 is sealed and blocked by mortar 24; an irrigation branch pipe 172 is arranged at the connection part of the prefabricated planting block 6 and the planting groove 61, and an irrigation main pipe 171 connected with the horizontal irrigation branch pipe 172 and the pipe groove 23 is vertically arranged.

Referring to fig. 7, the purification channels 16 are arranged at intervals or throughout the top of the gravity retaining wall, the pumping pipes 18 and the water pumps 19 are arranged at the upstream position of the river 1 or the upstream position of the purification channels 16, and the water storage tanks 14 are arranged at intervals at the top of each prefabricated retaining wall block 13.

With reference to fig. 8-10, the top of the prefabricated planting block 6 is provided with a through-length splicing tenon 64, the bottom of the prefabricated planting block is provided with a through-length splicing groove 63, two side edges are respectively provided with a splicing dovetail groove 62 which can be spliced with each other, the side of the prefabricated planting block 6 close to water is provided with planting grooves 61, greening holes 67 are uniformly arranged on the outer sides of the planting grooves 61 at intervals, and the side of the prefabricated planting block 6 opposite to water is provided with an arc-shaped cavity 66 which is subjected to rough treatment 68.

Referring to the attached drawings 8, 13 and 14, the end parts of the prefabricated planting blocks 6 are provided with end plates 69 with holes, when the length of the prefabricated planting blocks 6 exceeds 1m, a middle reinforcing plate 65 is arranged in the middle, and the size of the splicing grooves 63 of the prefabricated planting blocks 6 is 5-10 mm larger than that of the splicing tenons 64.

With reference to fig. 1, 6, 7, 11 and 12, adjacent prefabricated planting blocks 6 and prefabricated planting blocks 6 and prefabricated retaining wall blocks 13 are spliced through a splicing dovetail groove 62, and with reference to fig. 14, mortar jointing 25 is adopted at other contact parts except the splicing dovetail groove 62 for bonding; and as shown in the attached drawings 1-5, the same type of prefabricated planting blocks 6 or prefabricated retaining wall blocks 13 are vertically connected through splicing grooves 63 and splicing tenons 64.

With reference to the attached drawings 15-16, a macadam water storage layer 9 and a soil planting layer 10 are sequentially arranged in the planting groove 61 from bottom to top, a waterproof layer 11 is arranged at the contact position of the macadam water storage layer 9 and the planting groove 61 of the prefabricated planting block 6, and a reverse filtering layer 12 is arranged at the contact position of the soil planting layer 10 and the planting groove 61 of the prefabricated planting block 6.

As shown in the attached figures 17-20, the prefabricated retaining wall block 13 is provided with a splicing tenon 64, a splicing groove 63 and a splicing dovetail groove 62 which have the same size and position as the prefabricated planting block 6; the side of the prefabricated retaining wall building block 13 facing the water is provided with a U-shaped planting groove 132, and the side of the prefabricated retaining wall building block 13 facing the water is provided with a column cavity 131.

Referring to fig. 24, the irrigation system comprises a water storage tank 14, a purification trench 16, an irrigation pipe 17, a water pumping pipe 18, a water pump 19 and a power generation device 20; the bottom of the water pumping pipe 18 is arranged below the normal water level 4, and the pipe body of the water pumping pipe 18 is arranged in the cavity 131 of the upright post; the water pump 19 is connected to the bottom of the water pumping pipe 18; the power generation equipment 20 is arranged above the normal water level 4; the irrigation system pumps the water in the river channel 1 into the purification groove 16 through the water pumping pipe 18, the water is purified and filtered and then stored in the water storage tank 14, and the water is used for the green plants 7 in the planting groove 61 to irrigate through the irrigation pipe 17. The first filter 161 is a crushed stone filter having a large particle size, and the second filter 162 is a crushed stone filter having a small particle size.

Referring to fig. 5 and 24, the water storage tank 14 and the purification groove 16 are arranged in the block retaining wall top filling 5, the water storage tank 14 is provided with the waterproof layer 11 at the periphery, the top is provided with the access cover 15, and two sides of the water storage tank 14 are respectively provided with an orifice connected with the purification groove 16 and the irrigation pipe 17; the bottom of the purification groove 16 is provided with a waterproof layer 11, a second filter layer 162 and a first filter layer 161 are respectively arranged on the waterproof layer, and the second filter layer 162 is communicated with the water storage tank 14 through a water pipe; the end parts of the irrigation pipe 17 and the water pumping pipe 18 are provided with filter screens (not shown in the figure).

Referring to fig. 21 to 24, the irrigation pipe 17 includes a connecting pipe 173 connected to the body of the water storage tank 14, a main vertical irrigation pipe 171 disposed inside the first layer of prefabricated retaining wall blocks 13 on the top of the retaining wall, and an irrigation branch pipe 172 transversely connecting the planting grooves 61 of the prefabricated planting blocks 6 on both sides.

The above embodiments are only used for explaining the technical idea of the present invention, not for the limitation of the protection of the right of the present invention, and all the modifications that are insubstantial to the present invention are carried out by using this idea, all fall into the protection scope of the present invention.

Claims (10)

1. The form-removal-free cast-in-place stepped self-irrigation ecological gravity retaining wall is characterized by consisting of a block retaining wall, cast-in-place concrete (22), an irrigation system and green plants (7); the block retaining wall is formed by splicing prefabricated planting blocks (6) and prefabricated retaining wall blocks (13) at intervals; the top of the prefabricated planting block (6) is provided with a through-long splicing tenon (64), the bottom of the prefabricated planting block is provided with a through-long splicing groove (63), two side edges are respectively provided with a splicing dovetail groove (62) which can be spliced with each other, the waterside side of the prefabricated planting block (6) is provided with planting grooves (61), greening holes (67) are uniformly arranged at intervals on the outer side of the planting grooves (61), and the waterside side of the prefabricated planting block (6) is provided with an arc-shaped cavity (66) which is subjected to rough treatment (68); a macadam water storage layer (9) and a soil planting layer (10) are sequentially arranged in the planting groove (61) from bottom to top, a waterproof layer (11) is arranged at the contact part of the macadam water storage layer (9) and the planting groove (61) of the prefabricated planting block (6), and a reverse filtering layer (12) is arranged at the contact part of the soil planting layer (10) and the planting groove (61) of the prefabricated planting block (6); the prefabricated retaining wall building block (13) is provided with a splicing tenon (64), a splicing groove (63) and a splicing dovetail groove (62) which have the same size and position as the prefabricated planting building block (6); a U-shaped planting groove (132) is arranged on the water-facing side of the prefabricated retaining wall building block (13), and a column cavity (131) is arranged on the water-backing side of the prefabricated retaining wall building block (13); the cast-in-place concrete (22) is positioned on the backwater side of the block retaining wall and is filled in the arc-shaped cavity (66) of the prefabricated planting block (6) and the column cavity (131) of the prefabricated retaining wall block (13); the bottom of the cast-in-place concrete (22) is provided with a foundation (2) and a cushion layer (3); the irrigation system comprises a water storage tank (14), a purification groove (16), an irrigation pipe (17), a water pumping pipe (18), a water pump (19) and power generation equipment (20); the water storage tank (14) and the purification groove (16) are arranged in the block retaining wall top filling soil (5), the periphery of the water storage tank (14) is provided with a waterproof layer (11), the top of the water storage tank is provided with an access cover (15), and two sides of the tank body of the water storage tank (14) are respectively provided with an orifice connected with the purification groove (16) and the irrigation pipe (17); the bottom of the purification groove (16) is provided with a waterproof layer (11), a second filter layer (162) and a first filter layer (161) are respectively arranged on the waterproof layer, and the second filter layer (162) is provided with a drain pipe communicated with the water storage tank (14); the irrigation pipe (17) comprises a connecting pipe (173) connected with the box body of the water storage tank (14), a vertical irrigation main pipe (171) arranged inside one layer of prefabricated retaining wall building block (13) at the top of the building block retaining wall and irrigation branch pipes (172) transversely connected with planting grooves (61) of the prefabricated planting building blocks (6) at two sides; the bottom of the water pumping pipe (18) is arranged below a normal water level (4), and the pipe body of the water pumping pipe (18) is arranged inside the upright post cavity (131); the water pump (19) is connected to the bottom of the water pumping pipe (18); the power generation equipment (20) is arranged above a normal water level (4); green planting (7) including locate below normal water level (4) prefabricated planting block (6) plant groove (61) and prefabricated barricade block (13) U type plant aquatic plant (72) in groove (132), prefabricated planting block (6) plant groove (61) and prefabricated barricade block (13) U type plant inslot (132) land plant (71), purify in the slot (16) purification type plant (73), lawn (74) on gentle slope (8) above normal water level (4).

2. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall according to claim 1, wherein each prefabricated planting block (6) of the block retaining wall with a spacing of 4-10 m is provided with a prefabricated retaining wall block (13) with the same height as the prefabricated planting block (6).

3. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall according to claim 1, wherein the adjacent prefabricated planting blocks (6) are spliced by splicing dovetail grooves (62) and mortar jointing grooves (25) with the prefabricated retaining wall blocks (13) and vertically connected by the same type of prefabricated planting blocks (6) or prefabricated retaining wall blocks (13) through splicing grooves (63) and splicing tenons (64).

4. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall as claimed in claim 1, wherein the end of the prefabricated planting block is provided with an end plate (69) with a hole, when the length of the prefabricated planting block (6) exceeds 1m, a middle reinforcing plate (65) is arranged in the middle, and the size of the splicing groove (63) of the prefabricated planting block (6) is 5-10 mm larger than that of the splicing tenon (64).

5. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall as claimed in claim 1, wherein the top of the cast-in-place concrete foundation (2) is provided with tenons corresponding to the splicing grooves (63) of the prefabricated planting blocks (6) and the prefabricated retaining wall blocks (13).

6. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall according to claim 1, wherein the U-shaped planting groove (132) is not formed in the prefabricated retaining wall block (13) on the top layer of the retaining wall, a pipe groove (23) with a diameter 5-10 mm larger than that of the connecting pipe (173) is formed in the center of the top of the retaining wall block, and a gap between the pipe groove (23) and the connecting pipe (173) is blocked by mortar (24); an irrigation branch pipe (172) is arranged at the connection part of the planting groove (61) of the prefabricated planting building block (6), and an irrigation main pipe (171) connected with the horizontal irrigation branch pipe (172) and the pipe groove (23) is vertically arranged.

7. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall as claimed in claim 1, wherein the purification grooves (16) are arranged at the top of the gravity retaining wall at full length or at intervals, the water pumping pipes (18) and the water pumps (19) are arranged at the upstream position of the river (1) or at the upstream position of the purification grooves (16), and the water storage tanks (14) are arranged at the top of each prefabricated retaining wall block (13) at intervals.

8. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall as claimed in claim 1, wherein the irrigation system pumps water in the river (1) into the purification trench (16) through a water pumping pipe (18), the water is purified and filtered and then stored in the water storage tank (14), and the water is used for irrigation of green plants (7) in the planting groove (61) through an irrigation pipe (17).

9. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall as claimed in claim 1, wherein the ends of the irrigation pipe (17) and the water pumping pipe (18) are provided with filter screens.

10. The demolition-free cast-in-place stepped self-irrigation ecological gravity retaining wall as claimed in claim 1, wherein the first filter layer (161) is a gravel filter layer with a larger particle size, and the second filter layer (162) is a gravel filter layer with a smaller particle size.

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