Underground diaphragm wall guide wall and construction method thereof

Abstract

The invention provides an underground diaphragm wall guide wall and a construction method thereof, and the underground diaphragm wall guide wall comprises a first side guide wall, a second side guide wall, and a positioning assembly of a ground wall joint box or a lock catch pipe arranged between the first side guide wall and the second side guide wall, the first side guide wall and the second side guide wall each comprise a plurality of sub guide wall units spliced in the length direction of the guide wall and splicing seam inserting plates arranged in gaps of every two adjacent sub guide wall units. The underground diaphragm wall guide wall is designed to be modularized and assembled components, the requirements of underground diaphragm wall guide walls with different depths, widths and lengths are met through combination and assembly of different numbers of components, the assembly operation is simple and rapid, the underground diaphragm wall guide wall can be rapidly formed and used, and the underground diaphragm wall guide wall can be repeatedly used; and the construction period is greatly shortened, and a large amount of material and manpower cost investment is saved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an underground continuous wall guide wall and a construction method thereof. Background Art

[0002] Among the existing underground continuous wall guide wall construction technologies, cast-in-place reinforced concrete guide walls are often used. During the cast-in-place guide wall construction process, trench excavation, reinforcement construction, and the use of wooden squares or temporary steel bar welded support frames in the horizontal direction on both sides of the trench walls and both sides of the trench top in conjunction with formwork support and concrete pouring are required. The entire cast-in-place reinforced concrete guide wall has a complicated construction process, high requirements on soil quality, and a large demand for supporting material processing sites. It has the disadvantages of complicated construction procedures, slow molding speed, and long construction period.

[0003] In view of the shortcomings of the prior art in the construction of cast-in-place reinforced concrete guide walls, those skilled in the art have been looking for solutions. Summary of the invention

[0004] The purpose of the present invention is to provide an underground continuous wall guide wall and a construction method thereof, so as to solve the problems of complicated construction process, slow forming speed and long construction period in the construction of cast-in-place reinforced concrete guide wall.

[0005] In order to solve the above technical problems, the present invention provides an underground continuous wall guide wall, the underground continuous wall guide wall comprises: a first side guide wall, a second side guide wall and a positioning assembly of a ground wall joint box or a locking tube arranged between the first side guide wall and the second side guide wall, the first side guide wall and the second side guide wall both comprise: a plurality of sub-guide wall units spliced ​​along the length direction of the guide wall and a joint plug plate arranged in the gap between two adjacent sub-guide wall units; wherein each sub-guide wall unit comprises: a plurality of guide wall unit components, a pressing knife head, a horizontal pushing knife head and an angle connection limit clamp, some guide wall unit components are spliced ​​along the vertical direction to form a first guide wall of a designed depth, the pressing knife head is installed at the bottom of the first guide wall, and the horizontal pushing knife head is installed on the soil-facing side of the first guide wall as required; the remaining guide wall unit components are spliced ​​along the horizontal direction to form a second guide wall, and the first guide wall is connected to the second guide wall based on the angle connection limit clamp to form a first side guide wall or a second side guide wall.

[0006] Optionally, in the underground continuous wall guide wall, each guide wall unit component includes: a hollow cuboid with an open top and a plurality of partitions, the hollow cuboid includes: a pair of oppositely arranged first side faces, a pair of oppositely arranged second side faces and a bottom face; a plurality of partitions are arranged perpendicular to the bottom face of the hollow cuboid at predetermined intervals along the length direction of the hollow cuboid, each partition is parallel to the first side face of the hollow cuboid, and is perpendicular to the second side face of the hollow cuboid; the pressing tool head is installed on the bottom face of the lowest guide wall unit component in the first guide wall; the pushing tool head is installed on the first side face of the guide wall unit component closest to the surface in the first guide wall as needed.

[0007] Optionally, in the underground continuous wall guide wall, the hollow cuboid with an open top includes: two first plates, two second plates and a bottom plate, the two first plates are arranged opposite to each other to form two first side surfaces of the hollow cuboid; the two second plates are arranged opposite to each other and are spliced ​​with the two first plates located on both sides thereof to form two second side surfaces of the hollow cuboid; the bottom plate is spliced ​​with the two first plates and the two second plates to form the bottom surface of the hollow cuboid.

[0008] Optionally, in the underground continuous wall guide wall, the long side edge of each first plate has a protrusion and a depression; one short side edge of the first plate has a first protrusion, and the other short side edge has a first depression matching the first protrusion; based on the splicing of the first protrusion and the first depression, the splicing of the first side surfaces of the two guide wall unit components is achieved.

[0009] Optionally, in the underground continuous wall guide wall, the short side edge of each second plate has a depression and a protrusion that match the long side edge of the first plate; based on the plug-in of the short side of the second plate and the long side of the first plate, the splicing of the second plate and the first plate is achieved.

[0010] Optionally, in the underground continuous wall guide wall, the hollow rectangular body with an open top also includes: a connecting fixing plate and a horizontal pin, one end of the connecting fixing plate is fixed to the inside of a second plate, and the other end extends out of the top opening of the hollow rectangular body; the horizontal pin is arranged on the outer side of the second plate.

[0011] Optionally, in the underground continuous wall guide wall, the angle connection limit clamp includes: a main body, a groove and a convex strip arranged on the main body, the groove matches the first convex strip with the first convex strip with the first concave strip with the first plate.

[0012] Optionally, in the underground continuous wall guide wall, the positioning assembly includes: a positioning card and a wedge plug, and the positioning card is connected to the angle connection limit card.

[0013] The present invention also provides a construction method for an underground continuous wall guide wall, the construction method for an underground continuous wall guide wall comprising:

[0014] S1: Prepare the components of the underground continuous wall guide wall according to the design dimensions of the guide wall, and transport the components to the required construction location;

[0015] S2: constructing the first side guide wall. The process of constructing the first side guide wall includes the following steps:

[0016] S21: constructing sub-guide wall units in sequence along the length direction of the guide wall, and splicing the sub-guide wall units constructed later with the sub-guide wall units constructed earlier along the length direction of the guide wall until a first side guide wall of a designed length is formed; the cross section of the sub-guide wall units is in a “┌” shape;

[0017] S22: inserting a joint inserting plate into the gap between each two adjacent sub-guide wall units;

[0018] S23: Plant reinforcement bars at the horizontal edges of all sub-guide wall units laid flat on the ground, and pour concrete to form a hardened road surface while fixing all sub-guide wall units;

[0019] S3: Repeating steps S21 to S23 at a predetermined distance from the first side guide wall to construct a second side guide wall symmetrically distributed with the first side guide wall;

[0020] S4: placing a positioning assembly of a ground wall joint box or a locking tube between the first side guide wall and the second side guide wall according to the ground wall division conditions, so as to fix the first side guide wall and the second side guide wall together.

[0021] Optionally, in the construction method of the underground continuous wall guide wall, in S21, the construction process of each sub-guide wall unit includes the following steps:

[0022] S211: Determine whether the construction operation space of the sub-guide wall unit is limited. If so, install a pressing cutter head and a pushing cutter head at the bottom and the soil-facing side of the first section of the guide wall unit component in the sub-guide wall unit to form a development guide wall unit component. Otherwise, install a pressing cutter head only at the bottom of the first section of the guide wall unit component in the sub-guide wall unit to form a development guide wall unit component.

[0023] S212: Pressing the development guide wall unit component into the natural soil surface at the designated location to a preset depth by static pressure;

[0024] S213: lowering the guide wall unit components one by one, and splicing the guide wall unit components lowered each time with the guide wall unit components lowered previously in the vertical direction until a first guide wall of a designed depth is formed;

[0025] S214: Installing an angle connection limit clamp on the top surface of the first guide wall;

[0026] S215: splicing and installing a second guide wall laid flat on the ground on one side of the corner connection limit clamp, wherein the second guide wall includes at least one guide wall unit component.

[0027] In the underground continuous wall guide wall and the construction method thereof provided by the present invention, the underground continuous wall guide wall is designed as a modular and assembleable component. Through the combination of different numbers of components, the assembly structure meets the requirements of underground continuous wall guide walls of different depths, widths and lengths. The assembly operation is simple and rapid, and the system can be quickly formed and used, and can be repeatedly used, which greatly shortens the construction period and saves a lot of material and manpower costs.

[0028] In addition, the guide wall unit components are designed as hollow structures. During the process of inserting the components into the soil, the soil squeezing effect of non-hollow components of the same outer size on the surrounding soil can be greatly reduced, thereby reducing the impact on the surrounding environment and saving a lot of material input. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0030] Figure 1 It is a structural schematic diagram of a wall guide unit component in one embodiment of the present invention (focusing on showing the appearance);

[0031] Figure 2 It is a structural schematic diagram of another wall guide unit component in one embodiment of the present invention (focusing on showing the interior);

[0032] Figure 3 2 is a schematic diagram of the structure of a pressing cutter head in one embodiment of the present invention;

[0033] Figure 4 It is a schematic structural diagram of a flat push cutter head in one embodiment of the present invention;

[0034] Figure 5 This is a schematic structural diagram of an angle connection limit clamp in one embodiment of the present invention (focusing on showing the appearance);

[0035] Figure 6 It is a structural schematic diagram of another angle connection limit clamp in one embodiment of the present invention (focusing on showing the internal appearance);

[0036] Figure 7 is a schematic diagram of the structure of a positioning card in one embodiment of the present invention;

[0037] Figure 8 is a schematic diagram of the structure of a wedge-shaped plug in one embodiment of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of a spliced ​​insert plate in one embodiment of the present invention;

[0039] Fig.10 is a schematic structural diagram of a first side guide wall in one embodiment of the present invention;

[0040] Fig.11 It is a flow chart of a construction method of an underground continuous wall guide wall according to an embodiment of the present invention;

[0041] Figure 12a-12e is a schematic diagram of various steps of constructing a first side guide wall in one embodiment of the present invention;

[0042] In the figure:

[0043] 1-first side guide wall; 11-sub-guide wall unit; 111-guide wall unit component; 111_A-hollow cuboid; 111_a1-first plate; 1111-first protrusion; 1112-first depression; 111_a2-second plate; 111_a3-bottom plate; 111_a4-connecting and fixing plate; 111_a5-horizontal latch; 100-first side surface; 200-second side surface; 300-bottom surface; 111_B-partition plate; 112-pressing blade head; 113-pushing blade head; 114-angle connection and limiting card; 114_A-body; 114_B-groove; 114_C-convex strip; 12-jointing plug plate; 2-second side guide wall; 31-positioning card; 32-wedge plug. DETAILED DESCRIPTION

[0044] The underground continuous wall guide wall and the construction method thereof proposed by the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0045] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0046] In the description of the invention, it is necessary to understand that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to the specific circumstances.

[0049] Please refer to Figures 1 to 10The underground continuous wall guide wall comprises: a first side guide wall 1, a second side guide wall 2 and a positioning assembly of a ground wall joint box or a locking tube arranged between the first side guide wall 1 and the second side guide wall 2. The first side guide wall 1 and the second side guide wall 2 each comprise: a plurality of sub-guide wall units 11 spliced ​​along the length direction of the guide wall and a joint plug plate 12 arranged in the gap between two adjacent sub-guide wall units 11; wherein each sub-guide wall unit 11 comprises: a plurality of guide wall unit components 111, a downward pressing cutter head 112 , a flat push cutter head 113 and an angle connection limit clamp 114, part of the guide wall unit components 111 are spliced ​​in the vertical direction to form a first guide wall of the designed depth, the downward pressing cutter head 112 is installed at the bottom of the first guide wall, and the flat push cutter head 113 is installed on the soil-facing side of the first guide wall as required; the remaining guide wall unit components 111 are spliced ​​in the horizontal direction to form a second guide wall, and the first guide wall is connected to the second guide wall based on the angle connection limit clamp 114 to form a first side guide wall 1 or a second side guide wall 2. Specifically, the downward pressing cutter head plays the role of cutting the soil layer downward when the sub-guide wall unit is vertically inserted into the soil layer, so as to subsequently apply pressure to make it constructed to the specified elevation; the flat push cutter head only plays the role of cutting the soil layer when the sub-guide wall unit is pushed horizontally when the construction operation space is limited.

[0050] By designing the underground continuous wall guide wall as a modular and assembled component, and by combining different numbers of components, the assembled structure meets the requirements of underground continuous wall guide walls of different depths, widths and lengths. The assembly operation is simple and quick, and it can be quickly formed and used, and can be repeatedly used, which greatly shortens the construction period and saves a lot of material and manpower costs.

[0051] Please refer to Figure 1 and Figure 2 Each guide wall unit component 111 includes: a hollow cuboid 111_A with an open top and a plurality of partitions 111_B, wherein the hollow cuboid 111_A includes: a pair of oppositely arranged first side surfaces 100, a pair of oppositely arranged second side surfaces 200 and a bottom surface 300; a plurality of partitions 111_B are arranged perpendicular to the bottom surface 300 of the hollow cuboid 111_A at predetermined intervals along the length direction of the hollow cuboid 111_A, and each partition 111_B is parallel to the first side surface 100 of the hollow cuboid 111_A and perpendicular to the second side surface 200 of the hollow cuboid 111_A; the pressing cutter head 112 is installed on the bottom surface 300 of the lowest guide wall unit component 111 in the first guide wall; the pushing cutter head 113 is installed on the first side surface 100 of the guide wall unit component 111 closest to the surface in the first guide wall as required.

[0052] Specifically, the hollow cuboid 111_A with an open top includes: two first plates 111_a1, two second plates 111_a2 and a bottom plate 111_a3, wherein the two first plates 111_a1 are arranged opposite to each other to form two first side surfaces 100 of the hollow cuboid 111_A; the two second plates 111_a2 are arranged opposite to each other and are spliced ​​with the two first plates 111_a1 located on both sides thereof to form two second side surfaces 200 of the hollow cuboid 111_A; the bottom plate 111_a3 and the two first plates 111_a1 and two second plates 111_a2 are spliced ​​to form the bottom surface 300 of the hollow cuboid 111_A; wherein, the long side edge of each first plate 111_a1 has a protrusion and a depression; one short side edge of the first plate 111_a1 has a first protrusion 1111, and the other short side edge has a first depression 1112 matching the first protrusion 1111; based on the splicing of the first protrusion 1111 and the first depression 1112, the splicing of the first side surfaces 100 of the two wall guide unit components 111 is realized.

[0053] The short side edge of each second plate 111_a2 has a depression and a protrusion matching the long side edge of the first plate 111_a1; based on the plugging of the short side of the second plate 111_a2 with the long side of the first plate 111_a1, the second plate 111_a2 and the first plate 111_a1 are spliced. Furthermore, each first plate 111_a1 is provided with a bolt hole to fit a bolt to connect and fix the flat push cutter head.

[0054] The guide wall unit component 111 is designed as a hollow structure. During the process of inserting the component into the soil, the soil squeezing effect of non-hollow components of the same outer size on the surrounding soil can be greatly reduced, thereby reducing the impact on the surrounding environment and saving a lot of material input.

[0055] Better, such as Figure 1 and Figure 2 As shown, the hollow cuboid 111_A with an open top also includes: a connecting and fixing plate 111_a4 and a horizontal latch 111_a5, wherein one end of the connecting and fixing plate 111_a4 is fixed to the inside of a second plate 111_a2, and the other end extends out of the open top of the hollow cuboid 111_A; the horizontal latch 111_a5 is arranged on the outer side of the second plate 111_a2.

[0056] Please refer to Figure 1 , Figure 5 and Figure 6 The angle connection limit clamp 114 includes: a main body 114_A, a groove 114_B and a convex strip 114_C arranged on the main body 114_A, the groove 114_B matches the first protrusion 1111 of the first plate 111_a1, and the convex strip 114_C matches the first depression 1112 of the first plate 111_a1.

[0057] Please refer to Figure 7 and Figure 8 The positioning assembly for positioning the ground wall joint box or the locking tube includes: a positioning card 31 and a wedge plug 32, and the positioning card 31 is clamped on the angle connection limit clamp 114.

[0058] Accordingly, this embodiment also provides a construction method for an underground continuous wall guide wall. Figure 11 to Figure 12e The construction method of the underground continuous wall guide wall described in this embodiment is described in detail.

[0059] First, execute step S1, prepare various components of the underground continuous wall guide wall according to the design size of the guide wall (each component includes: a positioning component of a ground wall joint box or a locking tube, a sub-guide wall unit 11, and a joint plug plate 12), and transport each component to the required construction location;

[0060] Next, step S2 is executed to construct the first side guide wall 1. The process of constructing the first side guide wall 1 includes the following steps:

[0061] S21: constructing sub-guide wall units 11 in sequence along the length direction of the guide wall, splicing the sub-guide wall unit 11 constructed later with the sub-guide wall unit 11 constructed earlier along the length direction of the guide wall until a first side guide wall 1 of a designed length is formed; the cross section of the sub-guide wall unit 11 is in a “┌” shape; specifically, in S21, the construction process of each sub-guide wall unit 11 includes the following steps:

[0062] S211: Determine whether the construction operation space of the sub-guide wall unit 11 is limited. If limited, a pressing cutter head 112 and a pushing cutter head 113 are respectively installed at the bottom and the soil-facing side of the first section guide wall unit component 111 in the sub-guide wall unit to form a development guide wall unit component; otherwise, only the pressing cutter head 112 is installed at the bottom of the first section guide wall unit component 111 in the sub-guide wall unit 11 to form a development guide wall unit component; specifically, the pressing cutter head 112 and the pushing cutter head 113 are centered and assembled and fixed by matching bolts.

[0063] S212: Pressing the development guide wall unit component 111 into the natural soil surface at the designated location to a preset depth by static pressure;

[0064] S213: Lower the guide wall unit components 111 one by one, and splice the guide wall unit components 111 lowered each time with the guide wall unit components 111 lowered previously in the vertical direction until the first guide wall of the designed depth is formed; specifically, move the second section of the guide wall unit component 111 to the top of the constructed development guide wall unit component 111 and align it with it, and the second section of the guide wall unit component 111 and the development guide wall unit component 111 are fixed by connecting with the development guide wall unit component 111 using the horizontal pins 111_a5 on the outer side and the first protrusions 1111 and the first depressions 1112 on the first plates 111_a1 of both. During construction, an external level is used to control the verticality of the sub-guide wall unit 11 during the construction process, and the existing control lines at the construction site are used to control the horizontal position of the sub-guide wall unit 11.

[0065] S214: Installing an angle connection limit clamp 114 on the top surface of the first guide wall;

[0066] S215: A second guide wall laid flat on the ground is spliced ​​and installed on one side of the folded corner connection limit clamp 114 (i.e., the second guide wall changes the direction of setting the guide wall unit component 111 relative to the first guide wall, from longitudinal to flat, folded to a horizontal state and laid flat on the ground), the second guide wall includes at least one guide wall unit component 111, and the second guide wall is used as a temporary walkway board. Bolt holes are provided on the connecting and fixing plate 111_a4 of the guide wall standard structure in the second guide wall, and the second guide wall is fixed by inserting bolts into the bolt holes and driving them into the ground. In addition, in order to further improve the stability of the temporary walkway board, one end of all the second guide walls (i.e., one end of the connecting and fixing plate 111_a4 with bolts driven in) can also be connected with cast-in-place concrete pavement steel bar engineering and poured with pavement concrete to form an integrated temporary pavement. In order to facilitate the subsequent removal of the guide wall, a stop with a certain height difference is formed at the intersection of the concrete pavement and the connecting and fixing plate 111_a4 at the height of the lower surface of the connecting and fixing plate 111_a4, and gravel is laid throughout the stop range to form a protective belt.

[0067] Specifically, the groove 114_B on the main body 114_A of the angle connection limit card 114 is docked with the first protrusion 1111 on the first plate 111_a1 of the first section guide wall unit component 111 of the second guide wall, and the convex strip 114_C on the main body 114_A of the angle connection limit card 114 is docked with the first recess 1112 on the first plate 111_a1 of the last section guide wall unit component 111 of the first guide wall, so as to connect and fix the first guide wall and the second guide wall as a whole.

[0068] S22 : inserting a joint inserting plate 12 into the gap between each two adjacent sub-guide wall units 11 to seal and fill the joint between the adjacent sub-guide wall units 11 .

[0069] S23: Planting reinforcement bars at the horizontal edges of all the sub-guide wall units 11 laid flat on the ground, and pouring concrete to form a hardened road surface while fixing all the sub-guide wall units 11;

[0070] Next, step S3 is executed, and steps S21 to S23 are repeatedly executed at a predetermined distance (the predetermined distance is the ground wall size plus the design required external size) from the first side guide wall 1 to construct a second side guide wall 2 symmetrically distributed with the first side guide wall 1;

[0071] Next, step S4 is performed, and a positioning assembly of a ground wall joint box or a locking tube is placed between the first side guide wall 1 and the second side guide wall 2 according to the ground wall division, so as to fix the first side guide wall 1 with the second side guide wall 2. Specifically, a protruding structure is provided at the lower part of the positioning card 31 of the positioning assembly of the ground wall joint box or the locking tube, which is docked with the groove 114_B at the upper part of the angle connection limit card 114, and the matching wedge plug 32 is used to cooperate with the positioning card 31 to position and reinforce the ground wall joint box, so as to form a joint box positioning device of the concrete ground wall and also serve as a fixed connection between the guide walls on both sides.

[0072] The subsequent process of dismantling the underground continuous wall guide wall is as follows: after the construction of this section of the ground wall is completed, remove the positioning components of the ground wall joint box or the locking tube, remove the corner connection limit clamp 114, remove the joint plug 12, remove the matching fixing bolts, pull out the guide wall unit components 111 in sections and clean them up in preparation for subsequent use.

[0073] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0074] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An underground continuous wall guide wall, characterized in that: include: The first side guide wall, the second side guide wall and the positioning assembly of the ground wall joint box or the locking tube arranged between the first side guide wall and the second side guide wall, the first side guide wall and the second side guide wall both include: a plurality of sub-guide wall units spliced ​​along the length direction of the guide wall and a joint plug plate arranged in the gap between two adjacent sub-guide wall units; wherein each sub-guide wall unit includes: a plurality of guide wall unit components, a pressing knife head, a horizontal pushing knife head and an angle connection limit clamp, some guide wall unit components are spliced ​​along the vertical direction to form a first guide wall of designed depth, the pressing knife head is installed at the bottom of the first guide wall, and the horizontal pushing knife head is installed on the soil-facing side of the first guide wall as required; the remaining guide wall unit components are spliced ​​along the horizontal direction to form a second guide wall, and the first guide wall is connected to the second guide wall based on the angle connection limit clamp to form a first side guide wall or a second side guide wall.

2. The underground continuous wall guide wall according to claim 1, characterized in that: Each guide wall unit component includes: a hollow cuboid with an open top and a plurality of partitions, wherein the hollow cuboid includes: a pair of oppositely arranged first side surfaces, a pair of oppositely arranged second side surfaces and a bottom surface; the plurality of partitions are arranged perpendicular to the bottom surface of the hollow cuboid at predetermined intervals along the length direction of the hollow cuboid, each partition is parallel to the first side surface of the hollow cuboid, and is perpendicular to the second side surface of the hollow cuboid; the pressing tool head is installed on the bottom surface of the lowest guide wall unit component in the first guide wall; the pushing tool head is installed on the first side surface of the guide wall unit component closest to the surface in the first guide wall as needed.

3. The underground continuous wall guide wall according to claim 2, characterized in that: The hollow cuboid with an open top includes: two first plates, two second plates and a bottom plate, the two first plates are arranged opposite to each other to form two first side surfaces of the hollow cuboid; the two second plates are arranged opposite to each other and spliced ​​with the two first plates on both sides thereof to form two second side surfaces of the hollow cuboid; the bottom plate is spliced ​​with the two first plates and the two second plates to form the bottom surface of the hollow cuboid.

4. The underground continuous wall guide wall according to claim 1, characterized in that: The long side edge of each first plate has a protrusion and a recess; one short side edge of the first plate has a first protrusion, and the other short side edge has a first recess matching the first protrusion; based on the splicing of the first protrusion and the first recess, the splicing of the first side surfaces of the two wall guide unit components is achieved.

5. The underground continuous wall guide wall according to claim 4, characterized in that: The short side edge of each second board has a depression and a protrusion matching the long side edge of the first board; based on the plugging of the short side of the second board with the long side of the first board, the second board and the first board are spliced.

6. The underground continuous wall guide wall according to claim 3, characterized in that: The hollow cuboid with an open top also includes: a connecting and fixing plate and a horizontal latch, wherein one end of the connecting and fixing plate is fixed inside a second plate, and the other end extends out of the open top of the hollow cuboid; the horizontal latch is arranged on the outer side of the second plate.

7. The underground continuous wall guide wall according to claim 4, characterized in that: The angle connection limiting clamp comprises: a body, a groove and a convex strip arranged on the body, the groove matches with the first convexity of the first plate, and the convex strip matches with the first concaveness of the first plate.

8. The underground continuous wall guide wall according to any one of claims 1 to 7, characterized in that: The positioning assembly comprises: a positioning card and a wedge-shaped plug, and the positioning card is connected to the angle connection limit card.

9. A construction method for an underground continuous wall guide wall as claimed in any one of claims 1 to 8, characterized in that: include: S1: Prepare the components of the underground continuous wall guide wall according to the design dimensions of the guide wall, and transport the components to the required construction location; S2: constructing the first side guide wall. The process of constructing the first side guide wall includes the following steps: S21: constructing sub-guide wall units in sequence along the length direction of the guide wall, and splicing the sub-guide wall units constructed later with the sub-guide wall units constructed earlier along the length direction of the guide wall until a first side guide wall of a designed length is formed; the cross section of the sub-guide wall units is in a "┌" shape; S22: inserting a joint inserting plate into the gap between each two adjacent sub-guide wall units; S23: Plant reinforcement bars at the horizontal edges of all sub-guide wall units laid flat on the ground, and pour concrete to form a hardened road surface while fixing all sub-guide wall units; S3: Repeating steps S21 to S23 at a predetermined distance from the first side guide wall to construct a second side guide wall symmetrically distributed with the first side guide wall; S4: placing a positioning assembly of a ground wall joint box or a locking tube between the first side guide wall and the second side guide wall according to the ground wall division conditions, so as to fix the first side guide wall and the second side guide wall together.

10. The construction method of underground continuous wall guide wall according to claim 9, characterized in that: In S21, the construction process of each sub-guide wall unit includes the following steps: S211: Determine whether the construction operation space of the sub-guide wall unit is limited. If so, install a pressing cutter head and a pushing cutter head at the bottom and the soil-facing side of the first section of the guide wall unit component in the sub-guide wall unit to form a development guide wall unit component. Otherwise, install a pressing cutter head only at the bottom of the first section of the guide wall unit component in the sub-guide wall unit to form a development guide wall unit component. S212: Pressing the development guide wall unit component into the natural soil surface at the designated location to a preset depth by static pressure; S213: lowering the guide wall unit components one by one, and splicing the guide wall unit components lowered each time with the guide wall unit components lowered previously in the vertical direction until a first guide wall of a designed depth is formed; S214: Installing an angle connection limit clamp on the top surface of the first guide wall; S215: splicing and installing a second guide wall laid flat on the ground on one side of the corner connection limit clamp, wherein the second guide wall includes at least one guide wall unit component.

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