Foundation pit support construction method and structure of underground fire pool

Abstract

The invention relates to the technical field of building construction, and particularly discloses a foundation pit support construction method and structure of an underground fire pool, the foundation pit support construction structure of the underground fire pool comprises a support area, a foundation pit area and a side slope area, the side slope area is arranged on the peripheral side of the foundation pit area and comprises a first side slope section and a second side slope section, the first side slope section is connected with the second side slope section, the supporting area is arranged on the peripheral side of the foundation pit area, the second side slope section comprises a first supporting section, a second supporting section and a third supporting section, the first supporting section, the second supporting section and the third supporting section are connected, and the first supporting section and the third supporting section are connected with the first side slope section and the second side slope section respectively. The underground fire pool foundation pit support structure has the effect of improving the problem that an existing underground fire pool foundation pit support structure is single.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a foundation pit enclosure construction method and structure for an underground fire water tank. Background Art

[0002] In the foundation pit retaining construction of underground fire water tanks, traditional foundation pit retaining technology usually relies on a single support structure, which is sufficient for shallow foundation pits or scenes with simple geological conditions, but has certain limitations in deep foundation pits or scenes with complex geological conditions.

[0003] Specifically, the existing foundation pit retaining walls cannot provide sufficient lateral support to resist the lateral loads generated by deep soil layers, groundwater pressure or adjacent buildings, which can lead to cracks, displacement and even collapse of the foundation pit walls, causing serious construction safety problems. Summary of the invention

[0004] In order to improve the problem of the single foundation pit enclosure structure of the existing underground fire water tank, the present application provides a foundation pit enclosure construction method and structure for an underground fire water tank.

[0005] In the first aspect, the present application provides a foundation pit enclosure construction method for an underground fire water pool, which adopts the following technical solution: A method for constructing a foundation pit enclosure for an underground fire water pool, comprising the following steps: Regional division: divided into support area, foundation pit area and slope area; Obtaining steel sheet piles, and setting the steel sheet piles in the support area; Obtaining prefabricated anchor rods, and placing the prefabricated anchor rods in the support area; Installing wooden board formwork in the support area, pouring concrete, and removing the wooden board formwork; Excavating the foundation pit area and the side slope area, wherein the excavation of the foundation pit area and the side slope area is performed in layers; The wooden board formwork is installed in the slope area, the guami stone mortar is poured in the slope area, and the wooden board formwork is removed.

[0006] By adopting the above technical solution, steel sheet piles are set in the support area, which not only provides lateral support, but also can effectively shorten the construction period due to its quick installation characteristics; pouring concrete in the support area can match the complex geology and further provide lateral support; pouring melon stone mortar in the slope area can enhance the stability of the slope.

[0007] Preferably, obtaining steel sheet piles and setting the steel sheet piles in the support area includes the following steps: excavating a first guide ditch in the support area, and installing a positioning steel guide beam at the first guide ditch; Obtain the steel sheet piles, drive the steel sheet piles at the first guide ditch, and use water-stopping materials to caulk the seams; The positioning steel guide beam is removed.

[0008] By adopting the above technical scheme, the first guide ditch is excavated in the support area and the positioning steel guide beam is installed to ensure the accurate position and verticality of the steel sheet piles, providing a stable foundation for subsequent construction; the continuous support structure formed after the steel sheet piles are injected provides a strong lateral support force, effectively resists soil pressure and water pressure, and enhances the stability of the foundation pit; the use of water-stopping materials to caulk the seams improves the waterproof performance of the steel sheet pile support structure, effectively prevents groundwater from seeping into the foundation pit, and ensures the dryness of the construction environment and the safety of construction operations.

[0009] Preferably, the step of obtaining the prefabricated anchor rods and placing the prefabricated anchor rods in the support area comprises the following steps: excavating a second guide trench in the support area; Obtain the prefabricated anchor rod and the metal mesh, and set the prefabricated anchor rod at the second guide groove; The prefabricated anchor rod is meshed by the metal mesh.

[0010] By adopting the above technical solution, a second guide trench is excavated in the support area, which provides a clear path and position for the setting of prefabricated anchor rods and ensures the layout accuracy of the prefabricated anchor rods; the prefabricated anchor rods are hung with metal mesh to form a composite support system, laying the foundation for subsequent construction.

[0011] Preferably, the steps of installing wooden formwork in the support area, pouring concrete, and removing wooden formwork include the following steps: Installing the wooden board template at the first guide groove and the second guide groove, wherein the wooden board template surrounds the prefabricated anchor rod and the metal mesh; pouring concrete into the wooden board formwork and curing the concrete; The wooden board formwork is removed and the first guide ditch is backfilled with earth.

[0012] By adopting the above technical solution, wooden board formworks are installed at the first guide ditch and the second guide ditch to ensure the continuity and integrity of the concrete structure. After the wooden board formworks are enclosed, the prefabricated anchor rods and metal mesh are effectively wrapped, thereby enhancing the integration performance of the structure. The use of wooden board formworks simplifies the construction process and speeds up the construction. After the concrete is poured, the steps of removing the formworks and backfilling the earth further shorten the construction period.

[0013] Preferably, installing a wooden board formwork in the slope area, pouring melon stone mortar in the slope area, and removing the wooden board formwork comprises the following steps: Obtain a steel mesh, place the steel mesh on the slope area, and fix the steel mesh; Install the wooden board formwork, the wooden board formwork surrounds the slope area, and fix the wooden board formwork; Obtaining the melon stone mortar, pouring the melon stone mortar in the slope area, and maintaining the melon stone mortar; The wooden board formwork is removed.

[0014] By adopting the above technical solution, steel mesh is placed and fixed in the slope area, which enhances the tensile and shear strength of the guami stone mortar and significantly improves the overall stability of the slope.

[0015] In the second aspect, the present application provides a foundation pit enclosure construction structure for an underground fire water pool, which adopts the following technical solution: Project area, including support area, foundation pit area and slope area; A side slope area is arranged on the periphery of the foundation pit area, and includes a first side slope section and a second side slope section, wherein the first side slope section and the second side slope section are connected; The support area is arranged on the surrounding side of the foundation pit area, and the second slope section includes a first support section, a second support section and a third support section. The first support section, the second support section and the third support section are connected, and the first support section and the third support section are respectively connected to the first support section and the second slope section.

[0016] By adopting the above technical scheme, the project area is divided into support area, foundation pit area and slope area, the construction structure is more orderly, and it is convenient to take different construction measures and safety protection in a targeted manner; the connection between the first slope section and the second slope section in the slope area, and the mutual connection between the first support section, the second support section and the third support section in the support area form a continuous support system, which improves the overall stability and anti-deformation ability; clear area division and continuous support structure design help to better control the risks of earth collapse, soil erosion and other risks that may occur during the construction process, and ensure construction safety.

[0017] Preferably, the first slope section and the second slope section are both set with secondary slope reduction, the top slope reduction coefficients of the first slope section and the second slope section are both 1:0.5, the pit bottom elevations of the first slope section and the second slope section are both -0.1m, and the pit top elevations of the first slope section and the second slope section are both -0.1m.

[0018] By adopting the above technical solution, the secondary slope reduction design effectively reduces the slope of the slope and reduces the soil pressure, thereby improving the stability of the support structure and reducing the risk of collapse.

[0019] Preferably, the first slope section and the second slope section are provided with steel meshes, and a plurality of the steel meshes are fixedly arranged on the surfaces of the first slope section and the second slope section through connectors, and the surfaces of the first slope section and the second slope section are sprayed with guami stone mortar.

[0020] By adopting the above technical solution, the combined use of steel mesh and melon stone mortar enhances the overall stability of the support structure and reduces the safety risks during the construction process.

[0021] Preferably, the connecting member includes a dowel, a sliding ring and a supporting rib, the dowel is vertically arranged, the sliding ring is slidably connected to the dowel, two supporting ribs are symmetrically welded to both sides of the sliding ring, and the two supporting ribs are abutted against the steel mesh.

[0022] By adopting the above technical solution, after spraying the guami stone mortar on the steel mesh, the connecting effect of the supporting bars makes the mortar layer more firmly attached to the steel bars, thereby improving the durability and erosion resistance of the first slope section and the second slope section.

[0023] Preferably, the first support segment, the second support segment and the third support segment each include a plurality of steel sheet piles, a plurality of prefabricated anchor rods and a metal mesh, a plurality of the steel sheet piles are vertically arranged, a plurality of the steel sheet piles are connected in sequence to form a semi-enclosed shape, a plurality of the prefabricated anchor rods are vertically arranged, a plurality of the prefabricated anchor rods are arranged on the side of the first support segment and the second support segment close to the foundation pit area, a plurality of the prefabricated anchor rods are provided with a mesh hook, a plurality of the mesh hooks are provided, and a plurality of the mesh hooks are arranged on the side of the prefabricated anchor rod close to the steel sheet piles, the metal mesh is arranged between the steel sheet piles and the prefabricated anchor rods, and the metal mesh is connected to a plurality of the mesh hooks.

[0024] By adopting the above technical solution, steel sheet piles are arranged vertically and connected in sequence to form a semi-enclosed structure, which provides solid lateral support and effectively resists soil pressure and water pressure; the metal mesh and anchor rods can significantly improve the tensile strength of the cement wall, especially when subjected to complex stress states, the metal mesh can effectively prevent the formation and expansion of cracks on the cement wall surface, and improve the durability of the structure; the anchor rods penetrate deep into the stable soil layer, and the bearing capacity of the cement wall is enhanced through the anchoring effect, which is suitable for bearing greater soil pressure or other loads.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Setting steel sheet piles in the support area not only provides lateral support, but also can effectively shorten the construction period due to its quick installation characteristics; pouring concrete in the support area can match the complex geology and further provide lateral support; pouring melon stone mortar in the slope area can enhance the stability of the slope; 2. By excavating the first guide ditch in the support area and installing the positioning steel guide beam, the accurate position and verticality of the steel sheet piles are ensured, providing a stable foundation for subsequent construction; the continuous support structure formed after the steel sheet piles are driven provides a strong lateral support force, effectively resists soil pressure and water pressure, and enhances the stability of the foundation pit; the use of water-stopping materials to caulk the seams improves the waterproof performance of the steel sheet pile support structure, effectively prevents groundwater from infiltrating the foundation pit, and ensures the dryness of the construction environment and the safety of construction operations; 3. The project area is divided into support area, foundation pit area and slope area, and the construction structure is more orderly, which is convenient for taking different construction measures and safety protection in a targeted manner; the connection between the first slope section and the second slope section in the slope area, and the mutual connection between the first support section, the second support section and the third support section in the support area form a continuous support system, which improves the overall stability and anti-deformation ability; clear area division and continuous support structure design help to better control the risks of earth collapse, soil erosion and other risks that may occur during the construction process, and ensure construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the foundation pit enclosure construction structure of the underground fire water pool in the embodiment of the present application; Figure 2 It is a top view of the foundation pit enclosure construction structure of the underground fire water tank in the embodiment of the present application.

[0027] Figure 3 is a schematic structural diagram of a connecting member in an embodiment of the present application; Figure 4 It is a schematic cross-sectional structure diagram of the foundation pit enclosure construction structure of the underground fire water pool in the embodiment of the present application; Figure 5 yes Figure 4 Schematic diagram of A in the figure.

[0028] Explanation of the reference numerals: 1. Slope area; 11. First slope section; 12. Second slope section; 13. Steel mesh; 14. Connector; 141. Inserted reinforcement; 142. Slip ring; 143. Support reinforcement; 2. Support area; 21. First support section; 22. Second support section; 23. Third support section; 24. Steel sheet pile; 25. Prefabricated anchor rod; 26. Net hook; 27. Metal mesh; 28. Support block; 3. Foundation pit area. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The embodiment of the present application discloses a foundation pit enclosure construction method for an underground fire water pool.

[0031] like Figure 1 and Figure 2 As shown, the foundation pit enclosure construction method of the underground fire water pool includes the following steps: S1, area division, divided into support area 2, foundation pit area 3 and slope area 1; When dividing the area, it is necessary to divide the location and range of the branch protection area 2, foundation pit area 3 and slope area 1 according to different geological conditions to match the corresponding geological conditions.

[0032] S2, obtain the steel sheet piles 24, and set the steel sheet piles 24 in the support area 2.

[0033] S3, obtaining the prefabricated anchor rod 25, and setting the prefabricated anchor rod 25 in the support area 2.

[0034] S4, install wooden formwork in support area 2, pour concrete, and remove the wooden formwork.

[0035] S5, excavating the foundation pit area 3 and the slope area 1, and the excavation of the foundation pit area 3 and the slope area 1 is carried out in layers.

[0036] S6, installing wooden formwork in slope area 1, pouring melon stone mortar in slope area 1, and removing the wooden formwork.

[0037] By adopting the above-mentioned foundation pit enclosure construction method for the underground fire water pool, the steel sheet piles 24 set in the support area 2 can provide relatively stable lateral support in soft soil layers or geologically unstable areas, and because of its rapid installation characteristics, it can effectively shorten the construction period; the pouring of concrete in the support area 2 can match the complex geology and further provide lateral support.

[0038] Pouring melon stone mortar in the slope area can enhance the stability of the slope and ensure the stability of slope area 1 in areas with complex layer changes, such as areas with uneven soil properties or multiple soil layers, thereby improving the problem of the single foundation pit retaining structure of the existing underground fire water tank, and through diversified support methods, improving the adaptability of the foundation pit retaining of the underground fire water tank to complex geological conditions.

[0039] In step S2, the following specific operation steps are also included: S21, excavating a first guide ditch in the support area 2, and installing a positioning steel guide beam at the first guide ditch.

[0040] S22, obtain the steel sheet piles 24, drive the steel sheet piles 24 at the first guide ditch, and use water-stopping material to caulk the seams.

[0041] S23, remove the positioning steel guide beam.

[0042] By excavating the first guide ditch in the support area 2 and installing the positioning steel guide beam, the accurate position and verticality of the steel sheet piles 24 are ensured, providing a stable foundation for subsequent construction; the continuous support structure formed after the steel sheet piles 24 are injected provides lateral support force, effectively resists soil pressure and water pressure, and enhances the stability of the foundation pit; the use of water-stopping materials to caulk the seams improves the waterproof performance of the steel sheet pile 24 support structure, effectively prevents groundwater from infiltrating the foundation pit, and ensures the dryness of the construction environment and the safe control of construction operations. In the embodiments of the present application, water-stopping materials include but are not limited to materials such as sealants, asphalt tapes, expansive cement and water-stop tapes, and the present application does not impose specific restrictions on the material of the water-stopping material.

[0043] In step S3, the following specific operation steps are also included: S31, excavating a second guide ditch in the support area 2.

[0044] S32, obtaining a prefabricated anchor rod 25 and a metal mesh 27, and setting the prefabricated anchor rod 25 at the second guide ditch.

[0045] S33, the prefabricated anchor rod 25 is meshed by the metal mesh 27.

[0046] A second guide trench is excavated in the support area 2, which provides a clear path and position for the setting of the precast anchor rods 25, ensuring the layout accuracy of the precast anchor rods 25; the metal mesh 27 is used to hang the precast anchor rods 25 to form a composite support system, laying the foundation for subsequent construction.

[0047] In step S4, the following specific operation steps are also included: S41, installing wooden board templates at the first guide groove and the second guide groove, and the wooden board templates surround the prefabricated anchor rods 25 and the metal mesh 27.

[0048] The wooden board formwork is installed at the first guide groove and the second guide groove to ensure the continuity and integrity of the concrete structure. After the wooden board formwork is enclosed, the prefabricated anchor rods 25 and the metal mesh 27 are effectively wrapped, thereby enhancing the integration performance of the structure.

[0049] S42, pouring concrete into the wooden formwork and curing the concrete.

[0050] Specifically, concrete wraps the precast anchor rods 25 and the metal mesh 27 to form a cement wall. The precast anchor rods 25 penetrate into the stable soil layer and enhance the bearing capacity of the cement wall through the anchoring effect, so that it can withstand greater soil pressure or other loads. The metal mesh 27 and the anchor rods can significantly improve the tensile strength of the cement wall, especially when it is subjected to complex stress states.

[0051] S43, remove the wooden formwork and backfill the first guide ditch.

[0052] In the embodiment of the present application, the earth backfill of the first guide ditch is to fill the first guide ditch on the side of the steel sheet pile 24 away from the foundation pit area 3, providing lateral support for the steel sheet pile 24 and preventing the steel sheet pile 24 from displacement or tilting due to soil pressure or water pressure.

[0053] In step S6, the following specific operation steps are also included: S61, obtaining a steel mesh 13, placing the steel mesh 13 on the slope area 1, and fixing the steel mesh 13.

[0054] Placing and fixing the steel mesh 13 in the slope area 1 enhances the tensile and shear strengths of the guami stone mortar, and can improve the overall stability of the slope area 1.

[0055] S62, installing a wooden board formwork, the wooden board formwork surrounds the slope area 1, and fixing the wooden board formwork.

[0056] S63, obtaining melon stone mortar, pouring the melon stone mortar in the slope area 1, and maintaining the melon stone mortar.

[0057] S64, remove the wooden formwork.

[0058] The present application also discloses a foundation pit enclosure construction structure for an underground fire water pool. Figure 1 and Figure 2 As shown, the foundation pit retaining construction structure of the underground fire water tank includes a project area, wherein the project area includes a support area 2, a foundation pit area 3 and a slope area 1, the support area 2 and the slope area 1 are both arranged on the surrounding side of the foundation pit area 3, and the support area 2 is connected to the slope area 1 to surround the foundation pit area 3.

[0059] The project area is divided into support area 2, foundation pit area 3 and slope area 1. The construction structure is more orderly, which is convenient for taking different construction measures and safety protection in a targeted manner. Clear area division and continuous support structure design help to better control the risks of earthwork collapse, soil erosion and other risks that may occur during the construction process, and ensure construction safety. like Figure 1 and Figure 2 As shown, the side slope region 1 includes a first side slope section 11 and a second side slope section 12, and the first side slope section 11 and the second side slope section 12 are connected.

[0060] The first slope section 11 and the second slope section 12 are both set with secondary slope reduction. The top slope reduction coefficients of the first slope section 11 and the second slope section 12 are both 1:0.5. The pit bottom elevations of the first slope section 11 and the second slope section 12 are both -0.1m, and the pit top elevations of the first slope section 11 and the second slope section 12 are both -0.1m. The design of secondary slope reduction effectively reduces the slope of the slope and reduces the soil pressure, thereby improving the stability of the support structure and reducing the risk of collapse.

[0061] The first slope section 11 and the second slope section 12 are provided with steel meshes 13, and a plurality of steel meshes 13 are fixed on the surfaces of the first slope section 11 and the second slope section 12 through connectors 14. The surfaces of the first slope section 11 and the second slope section 12 are sprayed with guami stone mortar. The combined use of the steel meshes 13 and the guami stone mortar enhances the overall stability of the support structure and reduces the safety risks during the construction process.

[0062] like Figure 3 As shown, the connecting member 14 includes an inserted rib 141, a slip ring 142 and a supporting rib 143. The inserted rib 141 is vertically arranged, the slip ring 142 is slidably connected to the inserted rib 141, and two supporting ribs 143 are symmetrically welded on both sides of the slip ring 142. The two supporting ribs 143 are in contact with the steel mesh 13. After the melon stone mortar is sprayed on the steel mesh 13, the connecting effect of the supporting rib 143 makes the mortar layer more firmly attached to the steel bar, thereby improving the durability and erosion resistance of the first slope section 11 and the second slope section 12.

[0063] like Figure 4 and Figure 5 As shown, the support area 2 includes a first support segment 21, a second support segment 22 and a third support segment 23, the first support segment 21, the second support segment 22 and the third support segment 23 are connected, and the first support segment 21 and the third support segment 23 are connected to the first support and the second slope segment 12 respectively.

[0064] The first supporting section 21, the second supporting section 22 and the third supporting section 23 all include a plurality of steel sheet piles 24, a plurality of prefabricated anchor rods 25 and a metal mesh 27. The plurality of steel sheet piles 24 are vertically arranged, and the plurality of steel sheet piles 24 are connected in sequence to form a semi-enclosed shape. The plurality of prefabricated anchor rods 25 are vertically arranged, and the plurality of prefabricated anchor rods 25 are arranged on the side of the first supporting section 21 and the second supporting section 22 close to the foundation pit area 3. The plurality of prefabricated anchor rods 25 are provided with mesh hooks 26, and a plurality of mesh hooks 26 are provided. The plurality of mesh hooks 26 are arranged on the side of the prefabricated anchor rods 25 close to the steel sheet piles 24. The metal mesh 27 is arranged between the steel sheet piles 24 and the prefabricated anchor rods 25, and the metal mesh 27 is connected to the plurality of mesh hooks 26.

[0065] In the embodiment of the present application, the steel sheet piles 24 are vertically arranged and connected in sequence to form a semi-enclosed structure, which provides solid lateral support and effectively resists soil pressure and water pressure; the metal mesh 27 and the anchor rods can significantly improve the tensile strength of the cement wall, especially when subjected to complex stress states, the metal mesh 27 can effectively prevent the formation and expansion of cracks on the surface of the cement wall, and improve the durability of the structure; the anchor rods penetrate deep into the stable soil layer, and the bearing capacity of the cement wall is enhanced through the anchoring effect, which is suitable for bearing greater soil pressure or other loads.

[0066] It should be noted that in the embodiments of the present application, Figure 1 and Figure 2 As shown, the support area 2 is further provided with two support blocks 28, which are respectively arranged on the side of the first support segment 21 and the third support segment 23 away from the foundation pit area 3, and the two support blocks 28 are respectively abutted against the first support segment 21 and the third support segment 23; the two support blocks 28 provide support points for the first support segment 21 and the third support segment 23, enhance the stability of the first support segment 21 and the third support segment 23, and limit the lateral displacement of the first support segment 21 and the third support segment 23, thereby improving the stiffness of the first support segment 21 and the third support segment 23.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for constructing a foundation pit for an underground fire water pool, characterized in that: The following steps are involved: The area is divided into support area (2), foundation pit area (3) and slope area (1); Obtaining steel sheet piles (24), and setting the steel sheet piles (24) in the support area (2); Obtaining a prefabricated anchor rod (25), and placing the prefabricated anchor rod (25) in the support area (2); Installing a wooden board formwork in the support area (2), pouring concrete, and removing the wooden board formwork; Excavating the foundation pit area (3) and the slope area (1), wherein the excavation of the foundation pit area (3) and the slope area (1) is performed in layers; The wooden board formwork is installed in the slope area (1), the guami stone mortar is poured in the slope area (1), and the wooden board formwork is removed.

2. The method for foundation pit protection of an underground fire water pool according to claim 1, characterized in that: The step of obtaining steel sheet piles and setting the steel sheet piles in the support area comprises the following steps: Excavating a first guide ditch in the support area (2), and installing a positioning steel guide beam at the first guide ditch; Obtain the steel sheet pile (24), drive the steel sheet pile (24) into the first guide ditch, and use a water-stop material to caulk the seams; The positioning steel guide beam is removed.

3. The method for construction of foundation pit enclosure of underground fire water pool according to claim 2, characterized in that: The method of obtaining the prefabricated anchor rods and placing the prefabricated anchor rods in the support area comprises the following steps: excavating a second guide trench in the support area (2); Obtaining the prefabricated anchor rod (25) and the metal mesh (27), and arranging the prefabricated anchor rod (25) at the second guide groove; The prefabricated anchor rod (25) is meshed by means of the metal mesh (27).

4. The method for construction of foundation pit enclosure for underground fire water pool according to claim 3, characterized in that: The steps of installing wooden board formwork in the support area, pouring concrete, and removing wooden board formwork include the following steps: The wooden board template is installed at the first guide groove and the second guide groove, and the wooden board template surrounds the prefabricated anchor rod (25) and the metal mesh (27) after being enclosed; pouring concrete into the wooden board formwork and curing the concrete; The wooden board formwork is removed and the first guide ditch is backfilled with earth.

5. The method for construction of foundation pit enclosure for underground fire water pool according to claim 1, characterized in that: Installing a wooden board formwork in the slope area, pouring guami stone mortar in the slope area, and removing the wooden board formwork include the following steps: Obtaining a steel mesh (13), placing the steel mesh (13) on the slope area (1), and fixing the steel mesh (13); Installing the wooden board formwork, the wooden board formwork surrounds the slope area (1), and fixing the wooden board formwork; Obtaining the guami stone mortar, pouring the guami stone mortar in the slope area (1), and maintaining the guami stone mortar; The wooden board formwork is removed.

6. A foundation pit enclosure construction structure for an underground fire water pool, obtained by the foundation pit enclosure construction method for an underground fire water pool as described in any one of claims 1 to 5, characterized in that: include: The project area includes the support area (2), the foundation pit area (3) and the slope area (1); The side slope area (1) is arranged on the peripheral side of the foundation pit area (3), and comprises a first side slope section (11) and a second side slope section (12), wherein the first side slope section (11) and the second side slope section (12) are connected; A support area (2) is arranged on the peripheral side of the foundation pit area (3), and comprises a first support segment (21), a second support segment (22) and a third support segment (23); the first support segment (21), the second support segment (22) and the third support segment (23) are connected; the first support segment (21) and the third support segment (23) are connected to the first side slope segment (11) and the second side slope segment (12), respectively.

7. The foundation pit enclosure construction structure of the underground fire water pool according to claim 6 is characterized by: The first side slope section (11) and the second side slope section (12) are both arranged with a secondary slope reduction, the top slope reduction coefficients of the first side slope section (11) and the second side slope section (12) are both 1:0.5, the pit bottom elevations of the first side slope section (11) and the second side slope section (12) are both -0.1 m, and the pit top elevations of the first side slope section (11) and the second side slope section (12) are both -0.1 m.

8. The foundation pit enclosure construction structure of the underground fire water pool according to claim 7 is characterized by: The first side slope section (11) and the second side slope section (12) are provided with steel mesh sheets (13), and a plurality of the steel mesh sheets (13) are fixedly arranged on the surfaces of the first side slope section (11) and the second side slope section (12) through connecting pieces (14), and the surfaces of the first side slope section (11) and the second side slope section (12) are sprayed with guami stone mortar.

9. The foundation pit enclosure construction structure of the underground fire water pool according to claim 8 is characterized in that: The connecting member (14) comprises an inserted rib (141), a sliding ring (142) and a supporting rib (143); the inserted rib (141) is vertically arranged; the sliding ring (142) is slidingly connected to the inserted rib (141); two supporting ribs (143) are symmetrically welded to two sides of the sliding ring (142); and the two supporting ribs (143) are in contact with the steel mesh (13).

10. The foundation pit enclosure construction structure of the underground fire water pool according to claim 6, characterized in that: The first supporting section (21), the second supporting section (22) and the third supporting section (23) all comprise a plurality of steel sheet piles (24), a plurality of prefabricated anchor rods (25) and a metal mesh (27), wherein the plurality of steel sheet piles (24) are vertically arranged, the plurality of steel sheet piles (24) are sequentially connected to form a semi-enclosed shape, the plurality of prefabricated anchor rods (25) are vertically arranged, and the plurality of prefabricated anchor rods (25) are arranged on the first supporting section (21) and the second supporting section ( 22) on a side close to the foundation pit area (3), a plurality of the prefabricated anchor rods (25) are provided with a mesh hook (26), a plurality of the mesh hooks (26) are provided, and a plurality of the mesh hooks (26) are provided on a side of the prefabricated anchor rod (25) close to the steel sheet pile (24), the metal mesh (27) is provided between the steel sheet pile (24) and the prefabricated anchor rod (25), and the metal mesh (27) is connected to a plurality of the mesh hooks (26).

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