Water stop reverse ridge structure

Abstract

This utility model relates to the field of building construction technology and discloses a water-stopping retaining wall structure, including a floor slab and a first precast slab and a second precast slab connected sequentially on the base surface of the floor slab. The first precast slab and the second precast slab, the first precast slab and the base surface, and the second precast slab and the base surface are connected by an adhesive. At least one of the first precast slab and the second precast slab has a first positioning notch at one end, which is formed by two intersecting planes. The other of the first precast slab and the second precast slab has a positioning part that matches the shape of the first positioning notch. The first precast slab and the second precast slab intersect through the first positioning notch and the positioning part to form an included angle α. Beneficial effects: It can quickly locate the angle between the first precast slab and the second precast slab, which is beneficial to improving the construction efficiency and quality of the water-stopping retaining wall structure.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a water-stopping inverted retaining wall structure. Background Technology

[0002] In existing technologies, it is necessary to build water-stopping barriers in water-using environments such as bathrooms and kitchens. This usually involves multiple steps such as on-site formwork, steel reinforcement, and concrete pouring. It also typically requires 24 hours for the concrete to solidify, making the construction process not only complex but also time-consuming.

[0003] Later, a water-stopping inverted retaining wall structure emerged, which uses precast panels made of foamed ceramic. Multiple precast panels are connected with adhesive, and the precast panels are also connected to the base surface of the floor slab with adhesive, which can improve construction efficiency. However, the angle between adjacent precast panels is usually difficult to control, often requiring multiple measurements and adjustments, which still affects the construction progress. Utility Model Content

[0004] The main purpose of this utility model is to propose a water-stopping inverted retaining wall structure, which aims to solve the technical problem of low efficiency in adjusting the angle between adjacent precast slabs when building a water-stopping inverted retaining wall in the prior art.

[0005] To achieve the above objectives, this utility model proposes a water-stopping inverted retaining wall structure, including a floor slab and a first precast slab and a second precast slab connected sequentially on the base surface of the floor slab. The first precast slab and the second precast slab, the first precast slab and the base surface, and the second precast slab and the base surface are connected by an adhesive. At least one of the first precast slab and the second precast slab has a first positioning notch at one end, which is formed by two intersecting planes. The other of the first precast slab and the second precast slab has a positioning part that matches the shape of the first positioning notch. The first precast slab and the second precast slab are intersected by the first positioning notch and the positioning part to form an included angle α.

[0006] The beneficial effects of this utility model are as follows: In this utility model, a first positioning notch is provided on the first precast slab and / or the second precast slab, and the first positioning notch is formed by two intersecting planes. The first precast slab and the second precast slab can achieve rapid positioning of their relative angles through the first positioning notch. For example, assuming that only the first precast slab has the first positioning notch, and the angle formed by the two planes enclosing the first positioning notch is the same as the angle of the inner corner structure (i.e., the positioning part) of the second precast slab near the end of the first precast slab, then by matching the inner corner structure of the second precast slab near the end of the first precast slab with the first positioning notch, the angle between the first precast slab and the second precast slab can be quickly positioned, which is beneficial to improving the construction efficiency and quality of the water-stopping retaining wall structure.

[0007] Preferably, the first precast slab has a first positioning protrusion at one end near the second precast slab. The inner side of the first positioning protrusion is perpendicular to the end face of the first precast slab and forms a first positioning notch. The second precast slab has a second positioning protrusion at one end near the first precast slab. The inner side of the second positioning protrusion is perpendicular to the end face of the second precast slab and forms a first positioning notch. The second positioning protrusion and the inner corner structure of the first precast slab at one end near the second precast slab are both positioning parts. The second positioning protrusion is engaged with the first positioning notch of the first precast slab, and the inner corner structure of the first precast slab at one end near the second precast slab is engaged with the first positioning notch of the second precast slab. This makes the inner side of the second positioning protrusion face the end face of the first precast slab, and the inner side of the first precast slab face the end face of the second precast slab, making the first and second precast slabs perpendicular to each other, thus making the positional relationship between the first and second precast slabs more stable.

[0008] Preferably, both the end of the first precast slab away from the second precast slab and the end of the second precast slab away from the first precast slab are provided with a connecting plane for connecting to the wall.

[0009] Preferably, the water-stopping retaining wall structure also includes a third precast slab, the structure of which is the same as that of the second precast slab and is symmetrically arranged. Both ends of the first precast slab are provided with first positioning notches, and the two first positioning notches are used to connect the second precast slab and the third precast slab respectively.

[0010] Preferably, the end of the second precast slab away from the first precast slab and the end of the third precast slab away from the first precast slab are both provided with a connecting plane for connecting to the wall.

[0011] Preferably, the first precast slab includes a first main precast slab and a first secondary precast slab connected in sequence. The first main precast slab has a first positioning notch at both ends, the first secondary precast slab has a first positioning notch at the end furthest from the first main precast slab, and the first secondary precast slab has a second positioning notch at the end closest to the first main precast slab. The first secondary precast slab has a first secondary positioning protrusion at the end closest to the first main precast slab. The outer surface of the first secondary positioning protrusion is perpendicular to the end face of the first secondary precast slab and forms a second positioning notch. The first positioning protrusion at the end of the first main precast slab closest to the first secondary precast slab is located within the second positioning notch, and the first secondary positioning protrusion is located within the first positioning notch at the end of the first main precast slab closest to the first secondary precast slab. This arrangement allows the first main precast slab and the first secondary precast slab to extend along the same straight line, facilitating the construction of water-stopping structures of different sizes, expanding the applicable scope, and reducing construction costs.

[0012] Preferably, the water-stopping retaining wall structure also includes a fourth precast slab. The structure of the fourth precast slab is the same as that of the first precast slab and is symmetrically arranged. Both ends of the fourth precast slab are provided with a first positioning notch. The two first positioning notches are used to connect the second precast slab and the third precast slab, respectively, so that the first precast slab, the second precast slab, the third precast slab and the fourth precast slab form a rectangular waterproof ring. This can improve the versatility of the precast slab, thereby facilitating construction and reducing production costs.

[0013] Preferably, the second precast slab includes a second main precast slab and a second sub-precast slab connected in sequence. The second main precast slab has a first positioning notch at both ends, and the second sub-precast slab has a first positioning notch at the end furthest from the second main precast slab, and a second positioning notch at the end closest to the second main precast slab. The second sub-precast slab has a second positioning protrusion at the end closest to the second main precast slab. The outer surface of the second positioning protrusion is perpendicular to the end face of the second sub-precast slab and forms a second positioning notch. The second positioning protrusion at the end of the second main precast slab closest to the second sub-precast slab is located within the second positioning notch, and the second positioning protrusion is located within the first positioning notch at the end of the second main precast slab closest to the second sub-precast slab, so that the second main precast slab and the second sub-precast slab extend along the same straight line.

[0014] Preferably, the water-stopping retaining wall structure further includes a waterproof coating, which covers at least the inner surfaces of the first and second precast slabs, the junction of the inner surfaces of the first and second precast slabs, the junction of the inner surface of the first precast slab and the base surface, and the junction of the inner surface of the second precast slab and the base surface.

[0015] Preferably, the first and second precast slabs are made of foamed ceramic with a density p ≥ 400 kg / m³. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the water-stopping inverted retaining wall structure in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the first precast slab including a first main precast slab and a first auxiliary precast slab, and the second precast slab including a second main precast slab and a second auxiliary precast slab in an embodiment of the present utility model; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 for Figure 2 A magnified view of a section at point C; Figure 6 This is a schematic diagram of the structure of the water-stopping inverted retaining wall in the embodiment of this utility model when it is set at the corner of the wall; Figure 7 This is a schematic diagram of the structure of the water-stopping inverted retaining wall in an embodiment of this utility model. Figure 8 This is a schematic diagram of the structure of the first precast panel, the second precast panel, the adhesive, and the waterproof coating in this embodiment of the present invention.

[0018] In the attached drawings: 1-First precast slab, 11-First main precast slab, 111-First auxiliary positioning protrusion, 12-First auxiliary precast slab, 13-First positioning protrusion, 2-Second precast slab, 21-Second main precast slab, 211-Second auxiliary positioning protrusion, 22-Second auxiliary precast slab, 23-Second positioning protrusion, 3-Third precast slab, 4-Fourth precast slab, 5-Rectangular waterproof ring, 6-Positioning part, 7-First positioning notch, 8-Second positioning notch, 9-Connecting plane, 10-Floor slab, 101-Base surface, 20-Wall surface, 30-Adhesive, 40-Waterproof coating.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] like Figures 1 to 8 As shown, a water-stopping backsplash structure includes a floor slab 10 and a first precast slab 1 and a second precast slab 2 sequentially connected on a base surface 101 of the floor slab 10. The first precast slab 1 and the second precast slab 2, the first precast slab 1 and the base surface 101, and the second precast slab 2 and the base surface 101 are connected by an adhesive 30. At least one of the first precast slab 1 and the second precast slab 2 has a first positioning notch 7 at one end, which is formed by two intersecting planes. The other of the first precast slab 1 and the second precast slab 2 has a positioning part 6 that matches the shape of the first positioning notch 7. The first precast slab 1 and the second precast slab 2 are intersected by the first positioning notch 7 and the positioning part 6, forming an included angle α.

[0024] In this embodiment, the first precast slab 1 and / or the second precast slab 2 are provided with a first positioning notch 7, and the first positioning notch 7 is formed by two intersecting planes. The first precast slab 1 and the second precast slab 2 can achieve rapid positioning of their relative angle through the first positioning notch 7. For example, assuming that only the first precast slab 1 is provided with the first positioning notch 7, and the angle formed by the two planes enclosing the first positioning notch 7 is the same as the angle of the inner corner structure (i.e., the positioning part 6) of the second precast slab 2 near the end of the first precast slab 1, then by matching the inner corner structure of the second precast slab 2 near the end of the first precast slab 1 with the first positioning notch 7, the angle between the first precast slab 1 and the second precast slab 2 can be quickly positioned, which is beneficial to improving the construction efficiency and quality of the water-stopping retaining wall structure.

[0025] In some specific embodiments, reference is made to Figure 2 and Figure 3The first precast slab 1 has a first positioning protrusion 13 at one end near the second precast slab 2. The inner side of the first positioning protrusion 13 is perpendicular to the end face of the first precast slab 1 and forms a first positioning notch 7. The second precast slab 2 has a second positioning protrusion 23 at one end near the first precast slab 1. The inner side of the second positioning protrusion 23 is perpendicular to the end face of the second precast slab 2 and forms a first positioning notch 7. The inner corner structure of the second positioning protrusion 23 and the inner corner structure of the first precast slab 1 at the end near the second precast slab 2 are both positioning parts 6. The second positioning protrusion 23 is engaged with the first positioning notch 7 of the first precast slab 1, and the inner corner structure of the first precast slab 1 at the end near the second precast slab 2 is engaged with the first positioning notch 7 of the second precast slab 2, so that the inner side of the second positioning protrusion 23 is opposite to the end face of the first precast slab 1 and the inner side of the first precast slab 1 is opposite to the end face of the second precast slab 2, making the first precast slab 1 and the second precast slab 2 perpendicular to each other.

[0026] In this embodiment, both the first precast slab 1 and the second precast slab 2 are provided with a first positioning notch 7 and a positioning part 6. The first positioning notch 7 on the first precast slab 1 cooperates with the positioning part 6 on the second precast slab 2, and the first positioning notch 7 on the second precast slab 2 cooperates with the positioning part 6 on the first precast slab 1. This makes it easier to adjust the angle of the first precast slab 1 and the second precast slab 2 during installation, and the relative angle between the two is less likely to change after adjustment, making the positional relationship between the two more stable.

[0027] Furthermore, in existing technologies, the junctions between adjacent precast slabs are typically straight gaps. If the waterproofing structure inside the retaining wall fails, water inside the retaining wall can more easily leak out through these gaps. In this embodiment, however, the junction between adjacent precast slabs is a gap with multiple bends, making it less likely for water inside the retaining wall to leak out. Therefore, the retaining wall structure in this embodiment has a stronger leak-proof effect.

[0028] In this embodiment, based on the above structure, referring to Figure 2 , Figure 3 , Figure 6 , Figure 7 or Figure 8 The first precast slab 1 and the second precast slab 2 are perpendicular to each other, with an included angle α of 90°. However, in other embodiments, the included angle α can be less than 90° or greater than 90°. Depending on the specific structure of the water-stopping curb, the opening angle or opening orientation of the first positioning notch 7 can be adjusted to achieve a specific angle setting for the first precast slab 1 and the second precast slab 2.

[0029] In this embodiment, the inner side of the first positioning protrusion 13 refers to the side of the first positioning protrusion 13 facing the inner side of the water-stopping retaining wall structure. Similarly, the inner side of the second positioning protrusion 23 also refers to the side of the second positioning protrusion 23 facing the inner side of the water-stopping retaining wall structure.

[0030] In some specific embodiments, reference is made to Figure 6 Both the end of the first precast slab 1 away from the second precast slab 2 and the end of the second precast slab 2 away from the first precast slab 1 are provided with connecting planes 9 for connecting to the wall.

[0031] The water-stopping backsplash structure in this embodiment is suitable for installation at the corner of a wall formed by two wall surfaces 20. The end of the first precast slab 1 away from the second precast slab 2 and the end of the second precast slab 2 away from the first precast slab 1 are respectively connected to the two wall surfaces 20 through the connecting plane 9 and the adhesive 30.

[0032] In some specific embodiments, reference is made to Figure 1 and Figure 7 The water-stopping and anti-reverse structure also includes a third precast slab 3. The structure of the third precast slab 3 is the same as that of the second precast slab 2 and is symmetrically arranged. Both ends of the first precast slab 1 are provided with first positioning notches 7. The two first positioning notches 7 are used to connect the second precast slab 2 and the third precast slab 3 respectively.

[0033] In some specific embodiments, reference is made to Figure 7 The second precast slab 2, at the end away from the first precast slab 1, and the third precast slab 3, at the end away from the first precast slab 1, are both provided with connecting planes 9 for connecting to the wall.

[0034] The water-stopping retaining wall structure in this embodiment is suitable for installation near the individual wall 20. The end of the second precast slab 2 away from the first precast slab 1 and the end of the third precast slab 3 away from the first precast slab 1 are connected to the wall 20 via the connecting plane 9 and the adhesive 30.

[0035] In some specific embodiments, reference is made to Figures 2 to 4The first precast slab 1 includes a first main precast slab 11 and a first secondary precast slab 12 connected in sequence. The first main precast slab 11 has a first positioning notch 7 at both ends. The first secondary precast slab 12 has a first positioning notch 7 at the end away from the first main precast slab 11. The first secondary precast slab 12 has a second positioning notch 8 at the end near the first main precast slab 11. The first secondary precast slab 12 has a first secondary positioning protrusion 111 at the end near the first main precast slab 11. The outer side of the first secondary positioning protrusion 111 is perpendicular to the end face of the first secondary precast slab 12 and surrounds it to form the second positioning notch 8. The first positioning protrusion 13 at the end of the first main precast slab 11 near the first secondary precast slab 12 is located in the second positioning notch 8. The first secondary positioning protrusion 111 is located in the first positioning notch 7 at the end of the first main precast slab 11 near the first secondary precast slab 12, so that the first main precast slab 11 and the first secondary precast slab 12 extend along the same straight line.

[0036] In this embodiment, the first precast slab 1 includes a first main precast slab 11 and a first secondary precast slab 12. Normally, the first precast slab 1 includes only one main precast slab. However, when lengthening is required, the first main precast slab 11 can be connected to one or more first secondary precast slabs 12, resulting in a longer overall length for the first precast slab 1. It also maintains the shape with first positioning notches 7 at both ends, allowing it to still intersect and connect with the second precast slab 2 and the third precast slab 3. This arrangement facilitates the construction of water-stopping retaining structures of different sizes, expands the applicable range, and helps reduce construction costs.

[0037] In some specific embodiments, reference is made to Figure 1 The water-stopping and anti-reverse structure also includes a fourth precast slab 4. The structure of the fourth precast slab 4 is the same as that of the first precast slab 1 and is symmetrically arranged. Both ends of the fourth precast slab 4 are provided with first positioning notches 7. The two first positioning notches 7 are used to connect the second precast slab 2 and the third precast slab 3 respectively, so that the first precast slab 1, the second precast slab 2, the third precast slab 3 and the fourth precast slab 4 enclose to form a rectangular waterproof ring 5.

[0038] The water-stopping and anti-reverse slope structure in this embodiment is suitable for situations where the structure is not built against the wall 20. The first precast slab 1 and the fourth precast slab 4 have the same structure, the second precast slab 2 and the third precast slab 3 have the same structure, and even the four precast slabs have completely identical structures. This can improve the versatility of the precast slabs, thereby facilitating construction and reducing production costs.

[0039] In some specific embodiments, reference is made to Figure 2 and Figure 5The second precast slab 2 includes a second main precast slab 21 and a second sub-precast slab 22 connected in sequence. The second main precast slab 21 has a first positioning notch 7 at both ends. The second sub-precast slab 22 has a first positioning notch 7 at the end away from the second main precast slab 21 and a second positioning notch 8 at the end near the second main precast slab 21. The second sub-precast slab 22 has a second sub-positioning protrusion 211 at the end near the second main precast slab 21. The outer side of the second sub-positioning protrusion 211 is perpendicular to the end face of the second sub-precast slab 22 and surrounds it to form the second positioning notch 8. The second positioning protrusion 23 at the end of the second main precast slab 21 near the second sub-precast slab 22 is located in the second positioning notch 8. The second sub-positioning protrusion 211 is located in the first positioning notch 7 at the end of the second main precast slab 21 near the second sub-precast slab 22, so that the second main precast slab 21 and the second sub-precast slab 22 extend along the same straight line.

[0040] The structure is the same as that of the first precast slab 1, which includes the first main precast slab 11 and the first secondary precast slab 12. When it is necessary to lengthen the second precast slab 2, it can be achieved by connecting the second main precast slab 21 and the second secondary precast slab 22.

[0041] In some specific embodiments, reference is made to Figure 8 The water-stopping and anti-reverse structure also includes a waterproof coating 40, which covers at least the inner surfaces of the first precast slab 1 and the second precast slab 2, the junction of the inner surfaces of the first precast slab 1 and the second precast slab 2, the junction of the inner surface of the first precast slab 1 and the base surface 101, and the junction of the inner surface of the second precast slab 2 and the base surface 101.

[0042] To enhance waterproofing performance, a waterproof coating 40 is applied.

[0043] Furthermore, the waterproof coating 40 covers the outer surfaces of the first precast slab 1, the second precast slab 2, the third precast slab 3, and the fourth precast slab 4, as well as the junctions between adjacent precast slabs and between the precast slab and the base surface 101, which helps to further enhance the waterproof performance.

[0044] In some specific embodiments, the first precast slab 1 and the second precast slab 2 are made of foamed ceramic with a density p ≥ 400 kg / m³.

[0045] Specifically, the first precast slab 1, the second precast slab 2, the third precast slab 3, and the fourth precast slab 4 are all made of foamed ceramic with a density p ≥ 400 kg / m³. When the density p is controlled at 400 kg / m³, the foamed ceramic exhibits strong waterproof performance and is lightweight, making it ideal for constructing waterproof retaining walls.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A water-stopping inverted retaining wall structure, characterized in that: The system includes a floor slab (10) and a first precast slab (1) and a second precast slab (2) connected sequentially on the base surface (101) of the floor slab (10). The first precast slab (1) and the second precast slab (2), the first precast slab (1) and the base surface (101), and the second precast slab (2) and the base surface (101) are connected by an adhesive (30). At least one of the first precast slab (1) and the second precast slab (2) has a first positioning notch (7) at one end. The first positioning notch (7) is formed by two intersecting planes. The other of the first precast slab (1) and the second precast slab (2) has a positioning part (6) that matches the shape of the first positioning notch (7). The first precast slab (1) and the second precast slab (2) are intersected by the first positioning notch (7) and the positioning part (6) to form an included angle α.

2. The water-stopping retaining wall structure according to claim 1, characterized in that: The first precast plate (1) is provided with a first positioning protrusion (13) at one end near the second precast plate (2). The inner side of the first positioning protrusion (13) is perpendicular to the end face of the first precast plate (1) and surrounds it to form the first positioning notch (7). The second precast plate (2) is provided with a second positioning protrusion (23) at one end near the first precast plate (1). The inner side of the second positioning protrusion (23) is perpendicular to the end face of the second precast plate (2) and surrounds it to form the first positioning notch (7). The second positioning protrusion (23) and the inner corner structure of the first precast plate (1) near the second precast plate (2) are both the positioning part (6). The second positioning protrusion (23) is engaged on the first positioning notch (7) of the first precast plate (1). The inner corner structure of the first precast plate (1) near the second precast plate (2) is engaged on the first positioning notch (7) of the second precast plate (2). This makes the inner side of the second positioning protrusion (23) face the end face of the first precast plate (1) and the inner side of the first precast plate (1) face the end face of the second precast plate (2), making the first precast plate (1) and the second precast plate (2) perpendicular to each other.

3. The water-stopping inverted retaining wall structure according to claim 2, characterized in that: The first precast slab (1) at one end away from the second precast slab (2) and the second precast slab (2) at one end away from the first precast slab (1) are both provided with connecting planes (9) for connecting the wall.

4. The water-stopping inverted retaining wall structure according to claim 2, characterized in that: It also includes a third precast slab (3), the structure of which is the same as that of the second precast slab (2) and is symmetrically arranged. Both ends of the first precast slab (1) are provided with the first positioning notch (7), and the two first positioning notches (7) are used to connect the second precast slab (2) and the third precast slab (3) respectively.

5. The water-stopping retaining wall structure according to claim 4, characterized in that: The second precast slab (2) at one end away from the first precast slab (1) and the third precast slab (3) at one end away from the first precast slab (1) are both provided with a connecting plane (9) for connecting the wall.

6. The water-stopping inverted retaining wall structure according to claim 4, characterized in that: The first precast slab (1) includes a first main precast slab (11) and a first secondary precast slab (12) connected in sequence. The first main precast slab (11) has the first positioning notch (7) at both ends. The first secondary precast slab (12) has the first positioning notch (7) at the end away from the first main precast slab (11). The first secondary precast slab (12) has the second positioning notch (8) at the end close to the first main precast slab (11). The first secondary precast slab (12) is provided with a first secondary positioning protrusion (111) at one end near the first main precast slab (11). The outer side of the first secondary positioning protrusion (111) is perpendicular to the end face of the first secondary precast slab (12) and surrounds it to form the second positioning notch (8). The first positioning protrusion (13) at one end of the first main precast slab (11) near the first secondary precast slab (12) is located in the second positioning notch (8). The first secondary positioning protrusion (111) is located in the first positioning notch (7) at one end of the first main precast slab (11) near the first secondary precast slab (12), so that the first main precast slab (11) and the first secondary precast slab (12) extend along the same straight line.

7. The water-stopping inverted retaining wall structure according to claim 4, characterized in that: It also includes a fourth precast slab (4), the structure of which is the same as that of the first precast slab (1) and is symmetrically arranged. Both ends of the fourth precast slab (4) are provided with the first positioning notch (7). The two first positioning notches (7) are used to connect the second precast slab (2) and the third precast slab (3) respectively, so that the first precast slab (1), the second precast slab (2), the third precast slab (3) and the fourth precast slab (4) enclose to form a rectangular waterproof ring (5).

8. The water-stopping inverted retaining wall structure according to claim 7, characterized in that: The second precast slab (2) includes a second main precast slab (21) and a second sub-precast slab (22) connected in sequence. The first positioning notch (7) is provided at both ends of the second main precast slab (21). The first positioning notch (7) is provided at the end of the second sub-precast slab (22) away from the second main precast slab (21). The second positioning notch (8) is provided at the end of the second sub-precast slab (22) close to the second main precast slab (21). The second sub-precast slab (22) is provided with a second sub-positioning protrusion (211) at one end near the second main precast slab (21). The outer side of the second sub-positioning protrusion (211) is perpendicular to the end face of the second sub-precast slab (22) and surrounds it to form the second positioning notch (8). The second positioning protrusion (23) at one end of the second main precast slab (21) near the second sub-precast slab (22) is located in the second positioning notch (8). The second sub-positioning protrusion (211) is located in the first positioning notch (7) at one end of the second main precast slab (21) near the second sub-precast slab (22), so that the second main precast slab (21) and the second sub-precast slab (22) extend along the same straight line.

9. The water-stopping inverted retaining wall structure according to claim 1, characterized in that: It also includes a waterproof coating (40) that at least covers the inner surfaces of the first precast slab (1) and the second precast slab (2), the junction of the inner surfaces of the first precast slab (1) and the second precast slab (2), the junction of the inner surface of the first precast slab (1) and the base surface (101), and the junction of the inner surface of the second precast slab (2) and the base surface (101).

10. The water-stopping retaining wall structure according to claim 1, characterized in that: The first precast panel (1) and the second precast panel (2) are made of foamed ceramic. Its density p ≥ 400 kg / m³.

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