An assembled fish nest type ecological retaining wall structure

Abstract

An assembled fish-nest type ecological retaining wall structure disclosed by the present invention comprises: a base block layer located at the bottom of the retaining wall; a coping block layer located at the top of the retaining wall; and a plurality of intermediate wall layers stacked from bottom to top between the base block layer and the coping block layer. Each intermediate wall layer includes an upper wall layer and a lower wall layer arranged in an upper and lower stacked manner. The upper wall layer is composed of a plurality of upper longitudinal blocks and a plurality of transverse blocks arranged side by side along the length direction of the retaining wall. The lower wall layer is composed of a plurality of lower longitudinal blocks and a plurality of transverse blocks arranged side by side along the length direction of the retaining wall. A longitudinal fish-nest channel is formed by enclosing between adjacent upper longitudinal blocks and lower longitudinal blocks. A transverse fish-nest channel is formed by enclosing between adjacent transverse blocks and upper longitudinal blocks or lower longitudinal blocks. The present invention has high stability and good firmness. At the same time, it provides a habitat space for fish, planktonic animals and plants, and algae, playing a powerful ecological role.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological restoration engineering, and in particular to an assembled fish nest type ecological retaining wall structure. Background Art

[0002] With the improvement of people's understanding of the concept of harmony between man and nature and the river ecological system, the construction of ecological rivers has been comprehensively promoted in China. At present, a variety of ecological revetment forms have been applied in various river regulation projects, achieving good ecological and landscape effects. However, there are still some river sections where ecological rivers cannot be constructed, such as river sections with certain requirements for structural strength, such as docks, houses or buildings behind the bank, and waterfront platforms. The retaining walls in these sections are still mainly vertical rigid structures such as reinforced concrete structures or grouted rubble stone structures. Considering safety first, they cannot meet the needs of river ecological construction and the construction of the water ecological system.

[0003] In view of the above situation, the vertical rigid revetment has been ecologically transformed. For example, planting troughs are reserved at the top of the retaining wall for greening, and planting platforms are set at the front end of the retaining wall to plant aquatic plants, which are softened and greened at the landscape level. However, the problem of ecological barrier caused by the rigid structure has not been changed, and the space of the rigid structure itself has not been released and utilized. Therefore, how to improve the ecological function while ensuring the safety of the retaining wall structure and effectively exert the ecological benefits of the vertical retaining wall is also an urgent problem to be solved at the present stage.

[0004] Therefore, through beneficial exploration and research, the applicant has found a method to solve the above problems, and the technical solution to be introduced below is generated under this background. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide an assembled fish nest type ecological retaining wall structure in view of the deficiencies of the prior art, which can provide habitats for fish, planktonic animals and plants, benthic organisms, attached algae, etc., and improve the ecological function of the retaining wall while not affecting the stability of the retaining wall.

[0006] The technical problem to be solved by the present invention can be realized by adopting the following technical solutions:

[0007] An assembled fish nest type ecological retaining wall structure, comprising:

[0008] A base block layer located at the bottom of the retaining wall, the base block layer being composed of a plurality of base blocks arranged side by side along the length direction of the retaining wall;

[0009] A coping block layer located at the top of the retaining wall, the coping block layer being composed of a plurality of coping blocks arranged side by side along the length direction of the retaining wall; and

[0010] A number of intermediate wall layers are stacked from bottom to top between the base block layer and the coping block layer. Each intermediate wall layer includes an upper wall layer and a lower wall layer arranged in an upper and lower stacked manner. The upper wall layer is composed of a number of upper longitudinal blocks and a number of transverse blocks arranged side by side along the length direction of the retaining wall. The number of transverse blocks is arranged at intervals between the number of upper longitudinal blocks. The lower wall layer is composed of a number of lower longitudinal blocks and a number of transverse blocks arranged side by side along the length direction of the retaining wall. The number of transverse blocks is arranged at intervals between the number of lower longitudinal blocks. A longitudinal fish nest channel is formed by enclosing between adjacent upper longitudinal blocks and lower longitudinal blocks, and a transverse fish nest channel is formed by enclosing between adjacent transverse blocks and upper longitudinal blocks or lower longitudinal blocks.

[0011] In a preferred embodiment of the present invention, an upper U-shaped longitudinal diversion groove extending along the length direction and penetrating its left and right side surfaces is formed on the bottom surface of each upper longitudinal block, and a lower U-shaped longitudinal diversion groove extending along the length direction and penetrating its left and right side surfaces is formed on the top surface of each lower longitudinal block. The longitudinal fish nest channel is formed by enclosing between the upper U-shaped longitudinal diversion groove of the adjacent upper longitudinal block and the lower U-shaped longitudinal diversion groove of the lower longitudinal block.

[0012] In a preferred embodiment of the present invention, a U-shaped transverse diversion groove extending along the length direction and penetrating its left and right side surfaces is formed on the outer side surface of each transverse block. The transverse fish nest channel is formed by enclosing between the U-shaped transverse diversion groove of the adjacent transverse block and the upper U-shaped longitudinal diversion groove of the upper longitudinal block or the lower U-shaped longitudinal diversion groove of the lower longitudinal block.

[0013] In a preferred embodiment of the present invention, a bottom diversion channel extending along the length direction and penetrating its left and right side surfaces is formed in each base block, and the bottom diversion channels of several base blocks in the base block layer are spliced to form a transverse bottom fish nest channel.

[0014] In a preferred embodiment of the present invention, a U-shaped coping diversion groove extending along the length direction and penetrating its left and right side surfaces is formed on the bottom surface of each coping block, and the U-shaped coping diversion grooves of several coping blocks in the coping block layer are spliced to form a transverse top fish nest channel.

[0015] In a preferred embodiment of the present invention, positioning and matching are carried out through an uneven positioning structure between vertically adjacent base blocks and lower longitudinal blocks or transverse blocks, between vertically adjacent upper longitudinal blocks and lower longitudinal blocks, between vertically adjacent transverse blocks and upper longitudinal blocks or lower longitudinal blocks, and between vertically adjacent coping blocks and upper longitudinal blocks or transverse blocks.

[0016] In a preferred embodiment of the present invention, a base positioning protrusion extending along the length direction is formed on the top surface of each base block;

[0017] On the bottom surface of each upper longitudinal block, a first lower positioning groove extending along the length direction is formed, and on its top surface, a first upper positioning protrusion extending along the length direction is formed. The upper U-shaped longitudinal diversion groove penetrates through the first lower positioning groove;

[0018] On the bottom surface of each lower longitudinal block, a second lower positioning groove extending along the length direction is formed, and on its top surface, a second upper positioning protrusion extending along the length direction is formed. The lower U-shaped longitudinal diversion groove penetrates through the second upper positioning protrusion;

[0019] On the bottom surface of each transverse block, a third positioning groove extending along the length direction is formed, and on its top surface, a third upper positioning protrusion extending along the length direction is formed;

[0020] On the bottom surface of each coping block, a coping positioning groove extending along the length direction is formed. The U-shaped coping diversion groove penetrates through the coping positioning groove;

[0021] When the lower longitudinal block or the transverse block is stacked on the base block, an interlocking positioning is formed between the second lower positioning groove of the lower longitudinal block or the third lower positioning groove of the transverse block and the base positioning protrusion of the base block;

[0022] When the upper longitudinal block is stacked on the lower longitudinal block or the transverse block, an interlocking positioning is formed between the first lower positioning groove of the upper longitudinal block and the second upper positioning protrusion of the lower longitudinal block or the third upper positioning protrusion of the transverse block;

[0023] When the transverse block is stacked on the upper longitudinal block or the lower longitudinal block, an interlocking positioning is formed between the third lower positioning groove of the transverse block and the first upper positioning protrusion of the upper longitudinal block or the second positioning protrusion of the lower longitudinal block;

[0024] When the coping block is stacked on the upper longitudinal block or the transverse block, an interlocking positioning is formed between the coping positioning groove of the coping block and the first upper positioning protrusion of the upper longitudinal block or the third upper positioning protrusion of the transverse block.

[0025] In a preferred embodiment of the present invention, gaps are reserved between two vertically adjacent blocks or two horizontally adjacent blocks, and each gap is filled with mortar to bond the adjacent two blocks; wherein, the thickness of the foundation leveling mortar is controlled within 30 mm, the mortar between block layers is controlled within 15 mm, and the overall thickness shall not exceed 100 mm; the mortar strength is not lower than M15.

[0026] In a preferred embodiment of the present invention, the length and width dimensions of each block are the same, the heights of the upper longitudinal block, the lower longitudinal block and the transverse block are the same, and all are higher than the coping block, and the height of the coping block is higher than the height of the base block; at the same time, the dimensions between the positioning protrusions and the positioning grooves on each block are the same and can be fitted and positioned with each other; each block is made of ecological concrete material, and the aggregate particle size used is 10-20mm.

[0027] In a preferred embodiment of the present invention, the overall porosity of the ecological retaining wall structure is 25%-40%, and its structural strength is not less than C25; the rear side of the ecological retaining wall structure is connected to the rear support wall through mortar, and the mortar strength is not less than M15; the upper and lower thresholds of the ecological retaining wall structure are not less than 100mm.

[0028] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: The present invention utilizes the spatial structural characteristics of the vertical retaining wall and the artificial fish nest, and uses ecological concrete precast blocks to construct an assembled fish nest ecological retaining wall. During the superposition process of the base block, the upper longitudinal block, the lower longitudinal block, the transverse block and the coping block, the formed diversion channel becomes the swimming channel for fish, and the opening on the side of the transverse block becomes the communication hole with the water body. Swimming organisms such as fish can enter the fish nest channel inside the ecological wall through the communication hole. At the same time, the surface of the wall of the ecological retaining wall structure of the present invention is rough and permeable, providing opportunities for algae attachment. While having the advantages of high stability and good firmness, the present invention provides a habitat space for fish, planktonic animals and plants, and algae, and plays a powerful ecological role. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0031] Figure 2 is the front view of the present invention.

[0032] Figure 3 is the side view explosion diagram of the present invention.

[0033] Figure 4 is a three-dimensional structural schematic diagram of the base block of the present invention.

[0034] Figure 5 is a three-dimensional structural schematic diagram of the lower longitudinal block of the present invention.

[0035] Figure 6 It is a three - dimensional structure schematic diagram of the upper longitudinal block of the present invention.

[0036] Figure 7 It is a three - dimensional structure schematic diagram of the transverse block of the present invention.

[0037] Figure 8 It is a three - dimensional structure schematic diagram of the coping block of the present invention. Specific embodiments

[0038] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below with reference to specific drawings.

[0039] See Figure 1 and Figure 2 In the figures, an assembled fish - nest - type ecological retaining wall structure is shown, which includes a base block layer 100, a coping block layer 200 and two intermediate wall layers 300.

[0040] The base block layer 100 is located at the bottom of the retaining wall and is composed of a number of base blocks 110 arranged side by side along the length direction of the retaining wall. See Figure 4 and in combination with Figure 1 , each base block 110 adopts a hollow structure inside, and a bottom flow - guiding channel 111 extending along the length direction and penetrating its left and right side surfaces is formed therein. The bottom flow - guiding channels 111 of a number of base blocks 110 in the base block layer 100 are spliced to form a transverse bottom fish - nest channel 120 for fish activities.

[0041] The coping block layer 200 is located at the top of the retaining wall and is composed of a number of coping blocks 210 arranged side by side along the length direction of the retaining wall. See Figure 8 and in combination with Figure 1 , on the bottom surface of each coping block 210, a U - shaped coping flow - guiding groove 211 extending along the length direction and penetrating its left and right side surfaces is formed. The U - shaped coping flow - guiding grooves 211 of a number of coping blocks 210 in the coping block layer 200 are spliced to form a transverse top fish - nest channel 220 for fish activities.

[0042] The two-layer intermediate wall layer 300 is stacked from bottom to top between the base block layer 100 and the coping block layer 200. Of course, the number of layers of the intermediate wall layer 300 is not limited to the quantity in this embodiment, and it should be set according to the height of the ecological retaining wall. Each intermediate wall layer 300 includes an upper wall layer 310 and a lower wall layer 320 arranged in an upper and lower stacked manner. Among them, the upper wall layer 310 is composed of a number of upper longitudinal blocks 311 and a number of transverse blocks 301 arranged side by side along the length direction of the retaining wall, and the number of transverse blocks 301 are arranged at intervals between the number of upper longitudinal blocks 311; the lower wall layer 320 is composed of a number of lower longitudinal blocks 321 and a number of transverse blocks 301 arranged side by side along the length direction of the retaining wall, and the number of transverse blocks 301 are arranged at intervals between the number of lower longitudinal blocks 321. The transverse blocks 301 in the upper wall layer 310 and the transverse blocks 301 in the lower wall layer 310 are all blocks of the same shape and size.

[0043] See Figure 5 and Figure 6 and in combination with Figure 1 , on the bottom surface of each upper longitudinal block 311, there is formed an upper U-shaped longitudinal diversion groove 311a extending along the length direction and penetrating its left and right side surfaces. On the top surface of each lower longitudinal block 321, there is formed a lower U-shaped longitudinal diversion groove 321a extending along the length direction and penetrating its left and right side surfaces. A longitudinal fish nest channel 330 is enclosed between the upper U-shaped longitudinal diversion groove 311a of adjacent upper longitudinal blocks 311 and the lower U-shaped longitudinal diversion groove 321a of the lower longitudinal blocks 321.

[0044] See Figure 7 and in combination with Figure 1 , on the outer side surface of each transverse block 301, there is formed a U-shaped transverse diversion groove 301a extending along the length direction and penetrating its left and right side surfaces. A transverse fish nest channel 340 is enclosed between the U-shaped transverse diversion groove 301a of adjacent transverse blocks 301 and the upper U-shaped longitudinal diversion groove 311a of the upper longitudinal blocks 311 or the lower U-shaped longitudinal diversion groove 321a of the lower longitudinal blocks 321. The U-shaped transverse diversion groove 301a of the transverse block 301 serves as a communication hole with the water body, and swimming organisms such as fish can enter the ecological retaining wall through the U-shaped transverse diversion groove 301a to form the longitudinal fish nest channel 330 or the transverse fish nest channel 340, improving the water permeability and ecological functionality of the ecological retaining wall structure. At the same time, the wall surface of the ecological retaining wall structure of the present invention is rough and permeable, providing an opportunity for algae attachment.

[0045] To ensure the stable connection between each block, the vertical adjacent base block 110 and the lower longitudinal block 321 or the transverse block 301, the vertical adjacent upper longitudinal block 311 and the lower longitudinal block 321, the vertical adjacent transverse block 301 and the upper longitudinal block 311 or the lower longitudinal block 321, and the vertical adjacent coping block 210 and the upper longitudinal block 311 or the transverse block 301 are all positioned and fitted through the concave-convex positioning structure.

[0046] Specifically, refer to Figure 3 and combine with Figures 4 to 8 , on the top surface of each base block 110, a base positioning protrusion 112 extending along the length direction is formed, and its bottom surface is a plane.

[0047] On the bottom surface of each upper longitudinal block 311, a first lower positioning groove 311b extending along the length direction is formed, and on its top surface, a first upper positioning protrusion 311c extending along the length direction is formed. The upper U-shaped longitudinal diversion groove 311a penetrates through the first lower positioning groove 311b.

[0048] On the bottom surface of each lower longitudinal block 321, a second lower positioning groove 321b extending along the length direction is formed, and on its top surface, a second upper positioning protrusion 321c extending along the length direction is formed. The lower U-shaped longitudinal diversion groove 321a penetrates through the second upper positioning protrusion 321c.

[0049] On the bottom surface of each transverse block 301, a third lower positioning groove 301b extending along the length direction is formed, and on its top surface, a third upper positioning protrusion 301c extending along the length direction is formed.

[0050] On the bottom surface of each coping block 210, a coping positioning groove 212 extending along the length direction is formed, and its top surface is a plane. The U-shaped coping diversion groove 211 penetrates through the coping positioning groove 212.

[0051] When the lower longitudinal block 321 or the transverse block 301 is stacked on the base block 110, an interlocking positioning is formed between the second lower positioning groove 321b of the lower longitudinal block 321 or the third lower positioning groove 301b of the transverse block 301 and the base positioning protrusion 112 of the base block 110;

[0052] When the upper longitudinal block 311 is stacked on the lower longitudinal block 321 or the transverse block 301, an interlocking positioning is formed between the first lower positioning groove 311b of the upper longitudinal block 311 and the second upper positioning protrusion 321c of the lower longitudinal block 321 or the third upper positioning protrusion 301c of the transverse block 301;

[0053] When the horizontal block 301 is stacked on the upper longitudinal block 311 or the lower longitudinal block 321, an interlocking positioning is formed between the third lower positioning groove 301b of the horizontal block 301 and the first upper positioning protrusion 311c of the upper longitudinal block 311 or the second upper positioning protrusion 321c of the lower longitudinal block 321.

[0054] When the coping block 210 is stacked on the upper longitudinal block 311 or the horizontal block 301, an interlocking positioning is formed between the coping positioning groove 212 of the coping block 210 and the first upper positioning protrusion 311c of the upper longitudinal block 311 or the third upper positioning protrusion 301c of the horizontal block 301.

[0055] To improve the connection stability between each block, gaps are reserved between two vertically adjacent blocks or two horizontally adjacent blocks, and mortar is filled in each gap to bond the adjacent two blocks. Among them, the thickness of the foundation leveling mortar is controlled within 30 mm, the mortar between block layers is controlled within 15 mm, and the overall thickness shall not exceed 100 mm; the mortar strength is not less than M15.

[0056] The length and width dimensions of each block are the same, the heights of the upper longitudinal block 311, the lower longitudinal block 321 and the horizontal block 301 are the same, and they are all higher than the coping block 210, and the height of the coping block 210 is higher than the base block 110. At the same time, the dimensions between the positioning protrusions and positioning grooves on each block are the same and can be interlocked and positioned with each other. Each block is made of ecological concrete material, and the aggregate particle size used is 10 - 20 mm.

[0057] In addition, the overall porosity of the ecological retaining wall structure of the present invention is 25% - 40%, and its structural strength is not less than C25; the rear side of the ecological retaining wall structure is connected to the rear support wall through mortar, and the mortar strength is not less than M15; the upper and lower threshold heights of the ecological retaining wall structure are not less than 100 mm.

[0058] The following gives a specific application example of the assembled fish nest type ecological retaining wall structure of the present invention:

[0059] The implementation location is the internal water system of the second and third phases of commercial housing in Zizhu Peninsula, Minhang District, Shanghai. The assembled fish nest ecological retaining wall is arranged on the revetment of the cruise ship navigation channel. Among them, the width of the river channel in the second-phase commercial housing is 15 - 18 m, the width of the river channel in the third-phase commercial housing is 20 - 22 m, and the total application length is 2500 m.

[0060] At present, the ecological retaining wall has been arranged for about one year, and it is operating normally, with high stability, strong firmness, and good overall safety. For the revetment installed with the assembled fish nest ecological retaining wall, a micro-ecosystem mainly formed by epiphytic algae and benthic animals has been formed on the surface of the masonry, and the attachment area exceeds 60%, which is significantly higher than that of other vertical rigid revetments; in addition, a variety of fish inhabit in the holes of the fish nest, including Pseudorasbora parva, Rhodeus ocellatus, as well as larvae of multiple species such as Carassius auratus, Cyprinus carpio, and Misgurnus anguillicaudatus, significantly improving the biodiversity.

[0061] Therefore, it can be seen that using the structure of the assembled fish nest type ecological retaining wall of the present invention can improve the species diversity of water bodies, which is beneficial to the improvement of the overall water quality of water bodies; at the same time, the present invention has high stability, strong firmness, and good overall safety.

[0062] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled fish nest type ecological retaining wall structure, characterized in that, Comprising: A base block layer located at the bottom of the retaining wall, the base block layer being composed of a number of base blocks arranged side by side along the length direction of the retaining wall; A coping block layer located at the top of the retaining wall, the coping block layer being composed of a number of coping blocks arranged side by side along the length direction of the retaining wall; and A number of intermediate wall layers stacked from bottom to top between the base block layer and the coping block layer. Each intermediate wall layer includes an upper wall layer and a lower wall layer arranged in an upper and lower stacked manner. The upper wall layer is composed of a number of upper longitudinal blocks and a number of transverse blocks arranged side by side along the length direction of the retaining wall. The number of transverse blocks are arranged at intervals between the number of upper longitudinal blocks. The lower wall layer is composed of a number of lower longitudinal blocks and a number of transverse blocks arranged side by side along the length direction of the retaining wall. The number of transverse blocks are arranged at intervals between the number of lower longitudinal blocks. A longitudinal fish nest channel is formed by enclosing between adjacent upper longitudinal blocks and lower longitudinal blocks. A transverse fish nest channel is formed by enclosing between adjacent transverse blocks and upper longitudinal blocks or lower longitudinal blocks; On the bottom surface of each upper longitudinal block, there is formed an upper U-shaped longitudinal diversion groove extending along the length direction and penetrating its left and right side surfaces. On the top surface of each lower longitudinal block, there is formed a lower U-shaped longitudinal diversion groove extending along the length direction and penetrating its left and right side surfaces. The longitudinal fish nest channel is formed by enclosing between the upper U-shaped longitudinal diversion groove of the adjacent upper longitudinal block and the lower U-shaped longitudinal diversion groove of the lower longitudinal block; On the outer side surface of each transverse block, there is formed a U-shaped transverse diversion groove extending along the length direction and penetrating its left and right side surfaces. The transverse fish nest channel is formed by enclosing between the U-shaped transverse diversion groove of the adjacent transverse block and the upper U-shaped longitudinal diversion groove of the upper longitudinal block or the lower U-shaped longitudinal diversion groove of the lower longitudinal block; In each base block, there is formed a bottom diversion channel extending along the length direction and penetrating its left and right side surfaces. The bottom diversion channels of a number of base blocks in the base block layer are spliced to form a transverse bottom fish nest channel; On the bottom surface of each coping block, there is formed a U-shaped coping diversion groove extending along the length direction and penetrating its left and right side surfaces. The U-shaped coping diversion grooves of a number of coping blocks in the coping block layer are spliced to form a transverse top fish nest channel; Between the vertically adjacent base block and the lower longitudinal block or the transverse block, between the vertically adjacent upper longitudinal block and the lower longitudinal block, between the vertically adjacent transverse block and the upper longitudinal block or the lower longitudinal block, and between the vertically adjacent coping block and the upper longitudinal block or the transverse block, they are all in positioning cooperation through a concave-convex positioning structure.

2. The assembled fish nest type ecological retaining wall structure according to claim 1, characterized in that, On the top surface of each base block, there is formed a base positioning protrusion extending along the length direction; On the bottom surface of each upper longitudinal block, there is formed a first lower positioning groove extending along the length direction, and on its top surface, there is formed a first upper positioning protrusion extending along the length direction. The upper U-shaped longitudinal diversion groove penetrates the first lower positioning groove; On the bottom surface of each longitudinal block, a second lower positioning groove extending along the length direction is formed, and on its top surface, a second upper positioning protrusion extending along the length direction is formed. The lower U-shaped longitudinal diversion groove penetrates through the second upper positioning protrusion; On the bottom surface of each transverse block, a third positioning groove extending along the length direction is formed, and on its top surface, a third upper positioning protrusion extending along the length direction is formed; On the bottom surface of each coping block, a coping positioning groove extending along the length direction is formed. The U-shaped coping diversion groove penetrates through the coping positioning groove; When the lower longitudinal block or the transverse block is stacked on the base block, an interlocking positioning is formed between the second lower positioning groove of the lower longitudinal block or the third lower positioning groove of the transverse block and the base positioning protrusion of the base block; When the upper longitudinal block is stacked on the lower longitudinal block or the transverse block, an interlocking positioning is formed between the first lower positioning groove of the upper longitudinal block and the second upper positioning protrusion of the lower longitudinal block or the third upper positioning protrusion of the transverse block; When the transverse block is stacked on the upper longitudinal block or the lower longitudinal block, an interlocking positioning is formed between the third lower positioning groove of the transverse block and the first upper positioning protrusion of the upper longitudinal block or the second positioning protrusion of the lower longitudinal block; When the coping block is stacked on the upper longitudinal block or the transverse block, an interlocking positioning is formed between the coping positioning groove of the coping block and the first upper positioning protrusion of the upper longitudinal block or the third upper positioning protrusion of the transverse block.

3. The assembled fish nest type ecological retaining wall structure according to claim 1, characterized in that, A gap is reserved between two vertically adjacent blocks or two horizontally adjacent blocks, and each gap is filled with mortar to bond the adjacent two blocks. Among them, the thickness of the foundation leveling mortar is controlled within 30 mm, the mortar between block layers is controlled within 15 mm, and the overall thickness shall not exceed 100 mm; the mortar strength is not less than M15.

4. The assembled fish nest type ecological retaining wall structure according to claim 1, characterized in that The length and width dimensions of each block are the same. The heights of the upper longitudinal block, the lower longitudinal block, and the transverse block are the same, and they are all higher than the coping block. The height of the coping block is higher than the height of the base block; at the same time, the dimensions between the positioning protrusions and the positioning grooves on each block are the same and can be interlocked and positioned with each other; each block is made of ecological concrete material, and the aggregate particle size used is 10 - 20 mm.

5. The assembled fish nest type ecological retaining wall structure according to claim 1, characterized in that, The overall porosity of the ecological retaining wall structure is 25% - 40%, and its structural strength is not less than C25; the rear side of the ecological retaining wall structure is connected to the rear supporting wall through mortar, and the mortar strength is not less than M15; the upper and lower threshold heights of the ecological retaining wall structure are not less than 100 mm.

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