Conversion construction method for hot spring well below foundation bottom of newly-built building

Abstract

The invention relates to the field of house buildings, and discloses a transformation construction method for a hot spring well below the foundation bottom of a newly-built building, which comprises the following steps: S1, excavating earthwork in the range of the newly-built building to the bottom elevation of a foundation mattress layer in a large area, excavating earthwork around an old hot spring well to 0.8 m below the mattress layer, S2, dewatering hot spring water in the old hot spring well by adopting a deep water pump, and the water level is lowered to 0.8 m below the elevation of the foundation mattress layer and is maintained all the time, the well wall of the old hot spring well is broken to 0.5 m below the elevation of the foundation mattress layer, and a stainless steel pipe is arranged on the side face of the old hot spring well and is connected out of the building foundation range. The deep water pump is adopted for dewatering thermal spring water in the old hot spring well, the stainless steel pipe is arranged on the side face of the old hot spring well and connected to the outside of the building foundation range, so that drainage of the thermal spring water is achieved, the hot spring well within the building range can be effectively converted to the outside of a building, and the problem that building construction is affected by the hot spring well is solved; and normal water supply of the spring opening of the hot spring well is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of house construction, in particular to a construction method for converting a hot spring well below the bottom of a foundation of a newly built building. Background Art

[0002] Hot springs are a type of spring that naturally gushes out from underground. Their water temperature is 5°C higher than the annual average temperature of the environment, or 10°F higher than the Fahrenheit. As urban development accelerates and the scale of old city renovation continues to expand, the protection of hot spring resources during the construction process is particularly important.

[0003] During the construction of a new building, if there is a hot spring well within the area, the original hot spring well is usually sealed before the construction of the new building is carried out. However, this conventional method may not only lead to a waste of hot spring resources, but also bring many inconveniences to the construction. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a construction method for converting a hot spring well below the bottom of a newly built building foundation, which solves the problems of waste of hot spring resources and many inconveniences caused by construction.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A construction method for converting a hot spring well below the bottom of a newly built building foundation, comprising the following steps: S1. The earthwork of the new building area shall be excavated to the bottom elevation of the foundation cushion layer, and the earthwork around the old hot spring well shall be excavated to 0.8m below the cushion layer; S2. Use a deep water pump to lower the water level in the old hot spring well to 0.8m below the elevation of the foundation cushion layer and maintain the water level. Break the wall of the old hot spring well to 0.5m below the elevation of the foundation cushion layer. Install a stainless steel pipe on the side of the old hot spring well to connect it to the outside of the building foundation, and waterproof the joints. S3. Construct a conversion well outside the building, connect the drawn stainless steel pipe to the conversion well outside the building, and do waterproofing. After the construction of the drawn stainless steel pipe, use a concrete encapsulation layer to the bottom elevation of the foundation cushion layer. The bottom of the conversion well is 0.5m lower than the bottom elevation of the stainless steel pipe; S4. Place the submersible sewage pump at the bottom of the conversion well and open it, close and remove the deep water pump in the old hot spring well, install a reinforced concrete precast plate on the top of the old hot spring well, and do waterproof construction. Use a concrete encapsulation layer 7 to encapsulate and backfill the area around the hot spring well to the bottom elevation of the foundation cushion layer. After the concrete hardens, construct a graded sand and gravel cushion layer and a concrete cushion layer. Then, close the submersible sewage pump in the conversion well and carry out normal building structure construction.

[0006] Preferably, the old hot spring well is located in the earthwork, a reinforced concrete precast plate is installed on the top of the old hot spring well, and a waterproof layer is installed between the old hot spring well and the outside of the reinforced concrete precast plate.

[0007] Preferably, a concrete encapsulation layer is poured between the earthwork and the waterproof layer, a graded sand and gravel cushion layer is laid on top of the concrete encapsulation layer, a concrete cushion layer is laid on top of the graded sand and gravel cushion layer, and a building foundation is laid on top of the concrete cushion layer.

[0008] Preferably, the earthwork on the right side is provided with a conversion well, a deep water pump is installed inside the old hot spring well, and a submersible sewage pump is installed inside the conversion well.

[0009] Preferably, the stainless steel pipe is made of ND200.

[0010] Preferably, a stainless steel pipe is installed on the right side of the inner diameter of the old hot spring well, and the stainless steel pipe penetrates and extends into the interior of the conversion well.

[0011] Preferably, in said S2, in the process of breaking the wall of the old hot spring well, a segmented breaking method is adopted, and the length of each breaking should not exceed 0.5 meters.

[0012] Preferably, the verticality deviation of the well wall of the conversion well is 0.5%.

[0013] The present invention provides a construction method for converting a hot spring well below the bottom of a newly built building foundation. It has the following beneficial effects: The present invention excavates a large area of ​​earth within the scope of the new building to the bottom elevation of the foundation cushion layer, and excavates the earth around the old hot spring well to a specific depth, then uses a deep water pump to dewater the hot spring water in the old hot spring well, and arranges a stainless steel pipe on the side of the old hot spring well to connect it to the outside of the building foundation to achieve the drainage of the hot spring water, thereby effectively transferring the hot spring well within the building scope to the outside of the building, which not only solves the problem of the hot spring well affecting the construction of the building, but also ensures the normal water supply of the hot spring well.

[0014] 2. The present invention ensures the structural stability and waterproof performance of the well body by installing a reinforced concrete prefabricated plate on the top of the old hot spring well, and then installing a waterproof layer, a concrete encapsulation layer, a graded sand and gravel cushion layer and a concrete cushion layer in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an old hot spring well of a hot spring well conversion construction method below the bottom of a new building foundation according to the present invention; Figure 2 A schematic diagram of the reconstruction of an old hot spring well according to a construction method for converting a hot spring well below the bottom of a new building foundation according to the present invention; Figure 3A schematic diagram of the connection between an old hot spring well and a conversion well in a construction method for converting a hot spring well below the bottom of a foundation of a newly built building according to the present invention; Figure 4 It is a schematic diagram of the landfill of an old hot spring well according to a construction method for converting a hot spring well below the bottom of a foundation of a newly built building according to the present invention.

[0016] Among them, 1. earthwork; 2. deep water pump; 3. old hot spring well; 4. reinforced concrete precast slabs; 5. conversion well; 6. waterproof layer; 7. concrete encapsulation layer; 8. graded sand and gravel cushion layer; 9. concrete cushion layer; 10. building foundation; 11. stainless steel pipe; 12. submersible sewage pump; 13. cushion layer. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0018] Please see attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides a construction method for converting a hot spring well below the bottom of a newly built building foundation, comprising the following steps: S1. The earthwork 1 of the new building area is excavated to the bottom elevation of the foundation cushion layer 13, and the earthwork around the old hot spring well 3 is excavated to 0.8m below the foundation cushion layer 13; S2, using a deep water pump 2 to dewater the hot spring water in the old hot spring well 3, lowering the water level to 0.8m below the elevation of the foundation cushion layer 13 and maintaining the water level, breaking the well wall of the old hot spring well 3 to 0.5m below the elevation of the foundation cushion layer 13, setting a stainless steel pipe 11 on the side of the old hot spring well 3 to connect it outside the scope of the building foundation, and waterproofing the connection; S3, construct the conversion well 5 outside the building, connect the drawn stainless steel pipe 11 to the conversion well 5 outside the building, and do waterproofing. After the construction of the drawn stainless steel pipe 11, the concrete encapsulation layer 7 is used to the bottom elevation of the foundation cushion layer 13. The bottom of the conversion well 5 is 0.5m lower than the bottom elevation of the stainless steel pipe; S4. Place the submersible sewage pump 12 at the bottom of the conversion well 5 and open it, close and remove the deep water pump 2 in the old hot spring well 3, install the reinforced concrete prefabricated plate 4 on the top of the old hot spring well 3, and do waterproof construction. Use the concrete encapsulation layer 7 to encapsulate and backfill the area around the hot spring well to the bottom elevation of the foundation cushion layer 13. After the concrete hardens, construct the graded sand and gravel cushion layer 8 and the concrete cushion layer 9, then close the submersible sewage pump 12 in the conversion well 5 and carry out the building structure construction normally.

[0019] The large-scale excavation of earthwork within the scope of the new building to the bottom elevation of the foundation cushion layer and the specific depth of excavation of earthwork around the old hot spring well have created suitable spatial conditions for subsequent construction. Deep water pumps are used to dewater the hot spring water in the old hot spring well, lowering the water level and maintaining it below a specific elevation to ensure that the construction process is not disturbed by groundwater. Stainless steel pipes are installed on the side of the old hot spring well to connect to the outside of the building foundation, and waterproof treatment is done to achieve the drainage of hot spring water. A conversion well is constructed outside the building, and the led-out stainless steel pipe is connected to it to ensure the smooth transfer of hot spring water. Reinforced concrete precast panels are installed on the top of the old hot spring well, and waterproof construction treatment is done. Anti-seepage concrete is encapsulated and backfilled around the hot spring well to ensure the structural stability and waterproof performance of the well body, which not only solves the problem of the hot spring well affecting the construction of the building, but also ensures the normal water supply of the hot spring well.

[0020] Specific steps for waterproofing: Clean the connection: First, thoroughly clean the surface of the connection between the side of the old hot spring well 3 and the stainless steel pipe 11 to remove dust, debris, loose particles and rust to ensure that the surface is clean, flat and rough, which is conducive to the attachment of waterproof materials; Apply base treatment agent: Apply a layer of base treatment agent evenly on the cleaned connection surface to enhance the bonding force between the waterproof material and the base; Install waterstop: According to the shape and size of the joint, select a suitable waterstop such as rubber waterstop or metal waterstop, and install it at the joint, ensuring that the waterstop fits tightly to the joint surface without gaps or wrinkles; Apply waterproof coating: After the water stop is installed, apply multiple layers of waterproof coating on the joints. Polyurethane waterproof coating can be selected. Each layer of coating should be applied evenly, and the next layer should be applied after the previous layer is dry to ensure the waterproof effect. Additional waterproof layer: Add a layer of waterproof membrane as an additional waterproof layer at key locations such as corners and joints to enhance the reliability of waterproofing; Sealing treatment: seal the edge of the waterproof coating and the interface of the water stop strip, use sealant or waterproof sealant to fill the gap to ensure a tight seal and prevent water penetration; Inspection and acceptance: After the waterproofing treatment is completed, conduct a careful inspection to observe whether there are any defects such as missing coating, cracks, and bubbles.

[0021] The old hot spring well 3 is located in the earthwork 1 , a reinforced concrete prefabricated plate 4 is installed on the top of the old hot spring well 3 , and a waterproof layer 6 is installed between the old hot spring well 3 and the outside of the reinforced concrete prefabricated plate 4 .

[0022] A concrete encapsulation layer 7 is poured between the earthwork 1 and the waterproof layer 6, a graded gravel cushion layer 8 is laid on top of the concrete encapsulation layer 7, a concrete cushion layer 9 is laid on top of the graded gravel cushion layer 8, and a building foundation 10 is laid on top of the concrete cushion layer 9.

[0023] Concrete encapsulation layer 7 is impermeable concrete A conversion well 5 is provided in the right earthwork 1 , a deep water pump 2 is installed inside the old hot spring well 3 , and a submersible sewage pump 12 is installed inside the conversion well 5 .

[0024] The stainless steel pipe 11 is made of ND200.

[0025] A stainless steel pipe 11 is installed on the right side of the inner diameter of the old hot spring well 3 , and the stainless steel pipe 11 penetrates and extends to the inside of the conversion well 5 .

[0026] In S2, during the demolition of the wall of the old hot spring well 3, a segmented demolition method was adopted, and the length of each demolition should not exceed 0.5 meters.

[0027] The verticality deviation of the well wall of the conversion well 5 is 0.5%.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction method for converting a hot spring well below the bottom of a newly built building foundation, characterized in that: The following steps are involved: S1. The earthwork (1) of the new building area is excavated to the bottom elevation of the foundation cushion layer (13), and the earthwork around the old hot spring well (3) is excavated to 0.8m below the cushion layer (13); S2. Use a deep water pump (2) to dewater the hot spring water in the old hot spring well (3), lower the water level to 0.8 m below the elevation of the foundation cushion layer (13) and maintain the water level, break the wall of the old hot spring well (3) to 0.5 m below the elevation of the foundation cushion layer (13), install a stainless steel pipe (11) on the side of the old hot spring well (3) to connect it to the outside of the building foundation, and waterproof the connection; S3, constructing a conversion well (5) outside the building, connecting the drawn stainless steel pipe (11) to the conversion well (5) outside the building, and performing waterproofing. After the construction of the drawn stainless steel pipe (11), a concrete encapsulation layer (7) is used to the bottom elevation of the foundation cushion layer (13). The bottom of the conversion well (5) is 0.5 m lower than the bottom elevation of the stainless steel pipe; S4. Place the submersible sewage pump (12) at the bottom of the conversion well (5) and open it. Close and remove the deep water pump (2) in the old hot spring well (3). Install the reinforced concrete prefabricated plate (4) on the top of the old hot spring well (3). Perform waterproofing. Use the concrete encapsulation layer 7 to encapsulate the area around the hot spring well to the bottom elevation of the foundation cushion layer (13). After the concrete hardens, construct the graded sand and gravel cushion layer (8) and the concrete cushion layer (9). Then close the submersible sewage pump (12) in the conversion well (5) and carry out the building structure construction normally.

2. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: The old hot spring well (3) is located in the earthwork (1), a reinforced concrete prefabricated plate (4) is installed on the top of the old hot spring well (3), and a waterproof layer (6) is installed between the old hot spring well (3) and the outside of the reinforced concrete prefabricated plate (4).

3. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: A concrete encapsulation layer (7) is poured between the earthwork (1) and the waterproof layer (6), a graded gravel cushion layer (8) is laid on the top of the concrete encapsulation layer (7), a concrete cushion layer (9) is laid on the top of the graded gravel cushion layer (8), and a building foundation (10) is laid on the top of the concrete cushion layer (9).

4. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: The earthwork (1) on the right side is provided with a conversion well (5), a deep water pump (2) is installed inside the old hot spring well (3), and a submersible sewage pump (12) is installed inside the conversion well (5).

5. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: The stainless steel pipe (11) is made of ND200.

6. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: A stainless steel pipe (11) is installed on the right side of the inner diameter of the old hot spring well (3), and the stainless steel pipe (11) penetrates and extends into the interior of the conversion well (5).

7. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: In the above-mentioned S2, during the process of breaking the wall of the old hot spring well (3), the breaking is carried out in sections, and the length of each breaking should not exceed 0.5 meters.

8. A method for converting a hot spring well below the bottom of a newly built building foundation according to claim 1, characterized in that: The verticality deviation of the well wall of the conversion well (5) is 0.5%.

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