An internal anti-seepage structure of a foundation pit of a house construction

Abstract

The utility model discloses a kind of seepage-prevention structures inside foundation pit of house construction, it is related to house construction technical field.The utility model includes construction foundation pit, the construction foundation pit inner chamber bottom is provided with anti-seepage component, the construction foundation pit top side is provided with drainage component, the anti-seepage component includes anti-seepage board, it is equidistantly arranged between the anti-seepage board.The utility model is with anti-seepage board as core anti-seepage carrier, adjacent anti-seepage board is pasted through sealing rubber strip, form continuous bottom anti-seepage barrier without gap, solve the problem that the anti-seepage water structure of prior art is insufficient to construction foundation pit bottom anti-seepage cover, simultaneously, the fixed plate of anti-seepage board top side sliding connection, cooperate with the fixed bolt extending to the construction foundation pit bottom of penetrating fixed plate, firmly anchor anti-seepage board in base soil, effectively resist the displacement of anti-seepage board caused by soil body settlement or construction disturbance, avoid spliced joint to open, guarantee bottom anti-seepage reliability.

Description

Technical Field

[0001] This utility model belongs to the field of housing construction technology, and in particular relates to a seepage-proof structure inside the foundation pit of a housing construction project. Background Technology

[0002] As the pre-construction work space for underground structures, the internal seepage prevention performance of the foundation pit determines the construction safety and the long-term stability of the subsequent building structure. This is a core requirement that cannot be ignored in housing construction. After the foundation pit is excavated, the original water pressure balance of the soil will be broken. The rise of the groundwater level and the infiltration of soil pore water can easily lead to water accumulation inside the foundation pit. This will not only delay key processes such as steel bar binding and concrete pouring, but also cause safety accidents such as the collapse of the foundation pit sidewall and the heave of the foundation base.

[0003] Chinese patent application CN221956765U discloses a seepage-proof structure for interlocking piles in foundation pit engineering, relating to the field of interlocking pile technology. The seepage-proof structure includes multiple interlocking piles, each with a matching groove on both sides. After installation, seepage-proof strip one and seepage-proof strip two adhere to each other, effectively preventing water infiltration. Simultaneously, seepage-proof strip one is designed with multiple waterproof strips, which adhere to seepage-proof strip two. This design provides multiple seepage-proof measures, preventing water infiltration due to the failure of any one measure.

[0004] The above solutions address the leakage problem at the joints between the interlocking piles on the sidewalls of the foundation pit. However, existing waterproofing structures do not have a reasonable design for the bottom of the foundation pit, a high-risk area for seepage. Since the bottom of the foundation pit is in direct contact with the groundwater level, seepage water can easily penetrate through the pores of the foundation soil into the construction area, resulting in the inability to form a continuous and reliable waterproofing barrier. This ultimately leads to water accumulation at the bottom of the foundation pit, affecting construction progress and foundation stability. Furthermore, existing waterproofing structures do not have a matching active drainage system designed to work in conjunction with the waterproofing structure. As water accumulates inside the foundation pit and forms high pressure, it continuously squeezes the waterproofing structure, accelerating the expansion of the leakage range.

[0005] To address these issues, we provide a waterproofing structure for the interior of a building foundation pit. Utility Model Content

[0006] The purpose of this utility model is to provide a seepage-proof structure inside the foundation pit for building construction. By combining seepage-proof components and drainage components, it solves the problem in the prior art that the bottom of the foundation pit is in direct contact with the groundwater level, which easily leads to water accumulation at the bottom of the foundation pit. The lack of an active drainage system designed in conjunction with the seepage-proof structure can easily expand the leakage range.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a seepage-proof structure for the interior of a foundation pit in building construction. It includes a foundation pit, with a seepage-proof component installed at the bottom of the pit's interior cavity and a drainage component installed on one side of the top of the pit. The seepage-proof component includes seepage-proof plates, which are equidistantly spaced. The bottom of each seepage-proof plate is fixedly connected to the foundation pit. A sealing strip is fixedly connected to one side of each seepage-proof plate, and these sealing strips are also equidistantly spaced. A fixing plate is slidably connected to the top of each seepage-proof plate via a slide rail, and these fixing plates are also equidistantly spaced. The seepage-proof plates are horizontally laid on the leveled and compacted soil surface at the bottom of the foundation pit's interior cavity. The edges of adjacent seepage-proof plates are flush, and the seepage-proof plates face towards the adjacent seepage-proof plate. Each side of the seepage barrier has a rectangular groove of uniform depth. The sealing strip is fixed in the groove. When multiple seepage barriers are spliced ​​together, the seepage barrier and the sealing strip are pressed together. A long strip-shaped convex rail is integrally formed on the top of the seepage barrier near the edge. The bottom of the fixing plate has a long strip-shaped groove that matches the shape of the convex rail. The fixing plate is fitted onto the convex rail through the bottom groove and slides along the length of the convex rail. When the fixing plate slides to the preset position, the seepage barrier is firmly connected to the soil at the bottom of the construction pit by fastening bolts. This not only prevents the seepage barrier from shifting due to external disturbance or slight soil settlement during construction, but also ensures that the seepage barrier and the sealing strip are in a close fit, maintaining a continuous and stable seepage prevention effect.

[0009] The present invention is further configured such that a first drainage channel is provided on one side of the construction pit, the first drainage channels are equidistant from each other, a water collection well is connected to one side of the first drainage channel, and a cover plate is fixedly connected to the top of the water collection well. The first drainage channel can cover the seepage area inside the construction pit, collect the small amount of seepage water that has broken through the anti-seepage component at the bottom of the construction pit, and prevent the seepage water from accumulating locally at the bottom of the construction pit and forming high pressure, thereby protecting the sealing structure of the anti-seepage component from being damaged by water pressure. The water collection well can centrally store the collected seepage water for convenient subsequent unified treatment, and prevent the seepage water from flowing disorderly in the construction pit and affecting construction. The cover plate can effectively block the mud, sand, gravel and other debris generated during construction from falling into the water collection well, and prevent debris from clogging the first drainage channel or the water collection well.

[0010] The present invention is further configured such that the drainage component includes two mounting plates. The bottom of the mounting plate is fixedly connected to the construction pit, and a water pump is fixedly connected to the top of the mounting plate. One side of the water pump is connected to an inlet pipe, and the inlet pipe passes through the cover plate to the inner cavity of the sump and is fixedly connected to a filter pipe. The mounting plate provides installation support for the water pump. The water pump is a ZX15-30-2.2 water pump. As an active drainage power source, the water pump can extract the seepage water stored in the sump and reduce the water level inside the construction pit in a timely manner. The filter pipe can filter the seepage water, preventing mud, sand and impurities in the water from entering the water pump, avoiding wear or blockage of the water pump impeller, and extending the service life of the water pump.

[0011] The present invention is further provided that fixing bolts are provided on both sides of the top of the fixing plate, and the bottom of the fixing bolts penetrates the seepage barrier from the top of the fixing plate and extends to the bottom of the construction pit. The fixing bolts can firmly connect the fixing plate, the seepage barrier and the soil at the bottom of the construction pit into a whole, which can prevent the seepage barrier from shifting or warping, and avoid the splice joint from opening due to the shift of the seepage barrier.

[0012] The present invention is further configured such that a second drainage channel is provided at the top of the construction pit, and the second drainage channels are equidistant from each other. The second drainage channel is used to intercept the water around the construction pit and prevent it from flowing into the construction pit along the side wall of the construction pit, thereby reducing the source of water seepage in the construction pit from the source and reducing the drainage pressure of the first drainage channel.

[0013] The present invention is further configured such that a water baffle is provided on one side of the second drainage ditch, and a water storage tank is connected to one side of the second drainage ditch. The water baffle can guide the surface rainwater, prevent rainwater from flowing randomly on the top of the construction pit, ensure that the rainwater flows accurately into the second drainage ditch, and improve the rainwater collection efficiency. The second drainage ditch stores the collected rainwater through the water storage tank, avoiding the disorderly discharge of collected rainwater and its impact on the surrounding environment.

[0014] The present invention is further configured such that the top of the water pump is connected to a water outlet pipe, one side of which is connected to a water storage tank. The water outlet pipe can directionally transport the seepage water pumped from the water collection well to the water storage tank, thereby preventing the seepage water from being directly discharged to the perimeter of the construction area, reducing the soaking of the surrounding soil by the seepage water discharge, protecting the stability of the soil around the construction pit, and reducing the risk of collapse of the sidewall of the construction pit.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model uses a seepage-proof board as the core seepage-proof carrier, and adjacent seepage-proof boards are bonded together with sealing strips to form a continuous and gapless bottom seepage-proof barrier. This solves the problem of insufficient seepage-proof coverage of the bottom of the construction pit by existing seepage-proof structures. At the same time, a fixing plate slidably connected to one side of the top of the seepage-proof board, together with fixing bolts extending through the fixing plate to the bottom of the construction pit, firmly anchors the seepage-proof board to the base soil, effectively resisting the displacement of the seepage-proof board caused by soil settlement or construction disturbance, avoiding the opening of splice seams, and ensuring the reliability of bottom seepage prevention.

[0017] 2. This utility model uses a first drainage channel to collect a small amount of seepage water that has broken through the impermeable layer at the bottom of the construction pit into a collection well. Then, a water pump pumps out the accumulated water through an inlet pipe with a filter pipe, thus preventing the accumulation of water from forming high pressure. The second drainage channel at the top of the construction pit can actively intercept surface rainwater, preventing a large amount of rainwater from entering the construction pit and increasing the impermeable pressure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional diagram of a waterproof structure inside the foundation pit for building construction.

[0020] Figure 2 For a type of seepage-proof structure inside the foundation pit of a house construction Figure 1 A magnified structural diagram of part A in the middle.

[0021] Figure 3 For a type of seepage-proof structure inside the foundation pit of a house construction Figure 1 A magnified structural diagram of section B in the middle.

[0022] Figure 4 For a type of seepage-proof structure inside the foundation pit of a house construction Figure 1 A magnified structural diagram of part C in the middle.

[0023] Figure 5 This is a three-dimensional cross-sectional view of a water collection well in a seepage-proof structure inside the foundation pit of a building construction project.

[0024] In the attached diagram: 1. Construction pit; 2. Anti-seepage component; 21. Anti-seepage board; 22. Sealing strip; 23. Fixing plate; 3. Drainage component; 31. Mounting plate; 32. Water pump; 33. Inlet pipe; 34. Filter pipe; 4. First drainage channel; 5. Collection well; 6. Fixing bolts; 7. Second drainage channel; 8. Water baffle; 9. Outlet pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figure 1-5 This utility model is a seepage-proof structure for the foundation pit of a building construction, including a construction pit 1, a seepage-proof component 2 installed at the bottom of the inner cavity of the construction pit 1, and a drainage component 3 installed on one side of the top of the construction pit 1. The seepage-proof component 2 includes a seepage-proof plate 21, which is equidistantly arranged. The bottom of the seepage-proof plate 21 is fixedly connected to the construction pit 1. A sealing strip 22 is fixedly connected to one side of the seepage-proof plate 21, which is equidistantly arranged. A fixing plate 23 is slidably connected to the top side of the seepage-proof plate 21 through a slide rail, and the fixing plates 23 are equidistantly arranged.

[0027] Specifically: the impermeable boards 21 are laid horizontally on the leveled and compacted soil surface at the bottom of the construction pit 1. The edges of adjacent impermeable boards 21 are kept flush. Each side of the impermeable board 21 facing the adjacent impermeable board 21 has a rectangular groove of the same depth. The sealing strip 22 is fixed in the groove. When multiple impermeable boards 21 are spliced, the impermeable boards 21 and the sealing strip 22 are pressed and adhered to each other. The top of the impermeable board 21 near the edge has an integrally formed long strip-shaped convex rail. The bottom of the fixing plate 23 has a long strip-shaped groove that matches the shape of the convex rail. The fixing plate 23 is fitted onto the convex rail through the bottom groove and slides along the length of the convex rail. When the fixing plate 23 slides to the preset position, the impermeable board 21 is firmly connected to the bottom soil of the construction pit 1 by fastening bolts. This not only prevents the impermeable board 21 from shifting due to external disturbance or slight soil settlement during construction, but also ensures that the impermeable board 21 and the sealing strip 22 are in a close fit, maintaining a continuous and stable impermeability effect.

[0028] A first drainage ditch 4 is provided on one side of the construction pit 1. The first drainage ditches 4 are equidistant from each other. A water collection well 5 is connected to one side of the first drainage ditch 4. A cover plate is fixedly connected to the top of the water collection well 5. The drainage component 3 includes two mounting plates 31. The bottom of the mounting plates 31 is fixedly connected to the construction pit 1. A water pump 32 is fixedly connected to the top of the mounting plates 31. A water inlet pipe 33 is connected to one side of the water pump 32. The water inlet pipe 33 passes through the cover plate to the inner cavity of the water collection well 5 and is fixedly connected to a filter pipe 34. Fixing bolts 6 are provided on both sides of the top of the fixing plate 23. The bottom of the fixing bolts 6 passes through the anti-seepage plate 21 from the top of the fixing plate 23 and extends to the bottom of the construction pit 1. A second drainage ditch 7 is provided on the top of the construction pit 1. The second drainage ditches 7 are equidistant from each other. A water baffle 8 is provided on one side of the second drainage ditch 7. A water storage tank is connected to one side of the second drainage ditch 7. A water outlet pipe 9 is connected to one side of the water pump 32. The water outlet pipe 9 is connected to the water storage tank on one side.

[0029] Specifically: the first drainage ditch 4 can cover the seepage area inside the construction pit 1, collecting the small amount of seepage water that has broken through the anti-seepage component 2 at the bottom of the construction pit 1, preventing the seepage water from accumulating locally at the bottom of the construction pit 1 and forming high pressure, thereby protecting the sealing structure of the anti-seepage component 2 from being damaged by water pressure. The collection well 5 can centrally store the collected seepage water for convenient subsequent unified treatment, preventing the seepage water from flowing disorderly in the construction pit 1 and affecting construction. The cover plate can effectively prevent mud, sand, gravel and other debris generated during construction from falling into the collection well. Inside the water well 5, to prevent debris from clogging the first drainage channel 4 or the collection well 5, the mounting plate 31 provides installation support for the water pump 32. The water pump 32 is a ZX15-30-2.2 water pump. As an active drainage power source, the water pump 32 can pump out the seepage water stored in the collection well 5, and promptly lower the water level inside the construction pit 1. The filter pipe 34 can filter the seepage water, preventing mud, sand, and impurities in the water from entering the water pump 32, avoiding wear or blockage of the water pump 32 impeller, and extending the service life of the water pump 32. The fixing bolt 6 can... The fixing plate 23 and the seepage-proof plate 21 are firmly connected to the bottom soil of the construction pit 1 as a whole, which can prevent the seepage-proof plate 21 from shifting or warping, and avoid the joints from opening due to the displacement of the seepage-proof plate 21. The second drainage channel 7 is used to intercept the water around the construction pit 1, preventing it from flowing into the construction pit 1 along the side wall of the construction pit 1, reducing the source of seepage in the construction pit 1 from the source, and reducing the drainage pressure of the first drainage channel 4. The water-retaining plate 8 can guide the surface rainwater and prevent rainwater from entering the construction pit 1. The top can freely flow, ensuring that rainwater accurately flows into the second drainage ditch 7, improving rainwater collection efficiency. The second drainage ditch 7 stores the collected rainwater through a storage tank, avoiding the disorderly discharge of collected rainwater and its impact on the surrounding environment. The outlet pipe 9 can directionally transport the seepage water pumped by the water pump 32 from the water collection well 5 to the storage tank, avoiding direct discharge of seepage water to the construction area, reducing the soaking of the surrounding soil by seepage water discharge, protecting the stability of the soil around the construction pit 1, and reducing the risk of collapse of the sidewall of the construction pit 1.

[0030] The working principle of this utility model is as follows: First, the anti-seepage board 21 is laid horizontally on the leveled and compacted soil surface at the bottom of the construction pit 1. Adjacent anti-seepage boards 21 are pressed together by the sealing strips 22 in the rectangular grooves on the sides to form a continuous and gapless bottom anti-seepage barrier, blocking the path of groundwater level rise or soil pore water seeping into the construction pit 1. At the same time, the fixing plate 23 slides with the convex rail of the anti-seepage board 21 through the bottom groove. After being adjusted to the preset fixed position, the fixing bolts 6 extending from the top of the fixing plate 23 through the anti-seepage board 21 to the bottom of the construction pit 1 are used to firmly anchor the fixing plate 23, the anti-seepage board 21 and the bottom soil of the construction pit 1 into one, so as to avoid the anti-seepage board 21 shifting or the splicing joint opening due to construction machinery disturbance or slight soil settlement, and ensure that the bottom anti-seepage barrier remains sealed.

[0031] If a small amount of seepage water breaks through the bottom anti-seepage component 2, the first drainage channel 4 can receive and guide the seepage water, and evenly collect the seepage water into the connected collection well 5 through the channel body, so as to avoid the seepage water from accumulating locally at the bottom of the construction pit 1 and forming high pressure. The cover plate blocks construction debris from falling in, ensuring that the drainage channel is unobstructed. The water pump 32 is started, the water inlet pipe 33 is inserted into the inner cavity of the collection well 5, and the filter pipe 34 can filter the impurities in the seepage water. Then the water pump 32 transports the filtered seepage water to the water storage tank through the water outlet pipe 9, completing the active discharge of seepage water inside the construction pit 1 and timely reducing the water level inside the construction pit 1.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A seepage-proof structure for the foundation pit of a building construction, comprising a construction foundation pit (1), characterized in that: The bottom of the inner cavity of the construction pit (1) is provided with an anti-seepage component (2), and a drainage component (3) is provided on one side of the top of the construction pit (1); The seepage prevention component (2) includes seepage prevention plates (21), which are equidistant from each other. The bottom of the seepage prevention plate (21) is fixedly connected to the construction pit (1). A sealing strip (22) is fixedly connected to one side of the seepage prevention plate (21), which is equidistant from each other. A fixing plate (23) is slidably connected to one side of the top of the seepage prevention plate (21) via a slide rail, which is equidistant from each other.

2. The seepage-proof structure inside the foundation pit for house construction according to claim 1, characterized in that: The construction pit (1) has a first drainage channel (4) on one side, and the first drainage channels (4) are equidistant from each other. A water collection well (5) is connected to one side of the first drainage channel (4), and a cover plate is fixedly connected to the top of the water collection well (5).

3. The seepage-proof structure inside the foundation pit for house construction according to claim 1, characterized in that: The drainage component (3) includes an installation plate (31), and there are two installation plates (31). The bottom of the installation plate (31) is fixedly connected to the construction pit (1), and a water pump (32) is fixedly connected to the top of the installation plate (31). A water inlet pipe (33) is connected to one side of the water pump (32), and a filter pipe (34) is fixedly connected to one side of the water inlet pipe (33) through the cover plate to the inner cavity of the water collection well (5).

4. The seepage-proof structure inside the foundation pit for house construction according to claim 1, characterized in that: Fixing bolts (6) are provided on both sides of the top of the fixing plate (23). The bottom of the fixing bolts (6) penetrates the seepage-proof plate (21) from the top of the fixing plate (23) and extends to the bottom of the construction pit (1).

5. The seepage-proof structure inside the foundation pit for house construction according to claim 1, characterized in that: The top of the construction pit (1) is provided with a second drainage channel (7), and the second drainage channels (7) are equidistant from each other.

6. The seepage-proof structure inside the foundation pit for house construction according to claim 5, characterized in that: A water baffle (8) is provided on one side of the second drainage ditch (7), and a water storage tank is connected to one side of the second drainage ditch (7).

7. The seepage-proof structure inside the foundation pit for house construction according to claim 3, characterized in that: The top of the water pump (32) is connected to a water outlet pipe (9), and one side of the water outlet pipe (9) is connected to a water storage tank.

Images