A drainage layer for basement floor waterproofing

Abstract

This invention provides a drainage layer for preventing seepage in basement floors, comprising a foundation slab, a pebble filter layer on top of the foundation slab, a fine aggregate concrete surface layer on top of the pebble filter layer, and two concrete sills penetrating the pebble filter layer and the fine aggregate concrete surface layer on top of the foundation slab. A drainage ditch is provided between the two concrete sills, and a collection pit connected to the end of the drainage ditch is provided thereto. In use, the filter layer can filter groundwater seeping through the foundation slab, thereby preventing impurities such as silt and suspended solids carried in the groundwater from entering the pebble filter layer. This prevents the pebble filter layer from becoming clogged over long-term use. Simultaneously, the filter sleeve can further filter water entering the drainage mechanism, preventing clogging of the drainage mechanism and thus ensuring overall drainage capacity and preventing seepage from accumulating inside the pebble filter layer.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically, to a water-repellent layer for preventing leakage of basement floor slabs. Background Technology

[0002] Basement water seepage is a common problem, mainly caused by poor concrete quality, improper construction, failure of waterproofing layer, and excessive groundwater pressure. Traditional treatment methods often involve high-pressure grouting for local sealing or surface repair with waterproof coatings. However, under repeated high water pressure, the leakage points are very prone to recurrence.

[0003] A search revealed Chinese patent application number 202021274627.3, which discloses a method including a pebble filter layer. The pebble filter layer is laid on the upper surface of a foundation slab. A fine stone concrete surface layer is poured on the upper surface of the pebble filter layer through a colored strip isolation layer. A drainage ditch connected to a sump is provided on the upper surface of the foundation slab. A cast iron grate is installed on the top of the drainage ditch through angle steel supports. When the drainage ditch is adjacent to a concrete wall foundation, one side of the drainage ditch is connected to the concrete wall foundation through a brick support, and a concrete sill is provided on the other side. When the drainage ditch is not adjacent to a concrete wall foundation, concrete sills are provided on both sides of the drainage ditch, and steel reinforcement tie members are provided in the concrete sills, with one end of the steel reinforcement tie members extending out of the concrete sills. A drainage pipe is embedded in the concrete sills, with one end of the drainage pipe extending to the pebble filter layer and the other end extending to the drainage ditch. By setting up a hydrophobic layer, the problem of water seepage in the foundation slab is fundamentally solved, satisfying the functional requirements of the basement and reducing the cost of subsequent grouting and water-stopping measures in case of foundation slab seepage. However, the above-mentioned patent has the following shortcomings: during use, impurities such as silt and suspended solids carried by the underground seepage water will enter the pebble filter layer along with the seepage water. After long-term use, the pebble filter layer is easily blocked. Moreover, the inlet end of the drainage pipe directly exposes the pebble filter layer, and impurities such as silt can easily enter the pipe, leading to gradual blockage and reducing the overall drainage capacity. Therefore, this utility model proposes a new solution. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that, when the above-mentioned patent is used, impurities such as silt and suspended solids carried by underground seepage water will enter the pebble filter layer with the seepage water. After long-term use, the pebble filter layer is easily blocked. Moreover, the water inlet end of the drainage pipe directly exposes the pebble filter layer, and impurities such as silt can easily enter the pipe, which will gradually lead to blockage of the pipe and reduce the overall drainage capacity. Therefore, a water-draining layer for preventing seepage in basement floor slabs is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A drainage layer for preventing seepage in basement floor slabs includes a foundation slab, a pebble filter layer on top of the foundation slab, a fine aggregate concrete surface layer on top of the pebble filter layer, two concrete sills penetrating the pebble filter layer and the fine aggregate concrete surface layer on top of the foundation slab, a drainage ditch between the two concrete sills, a sump connected to the end of the drainage ditch, and a cover plate on top of the sump. The system also includes: A diversion mechanism is installed inside the pebble filter layer, and the outlet end of the diversion mechanism extends through the concrete sill and into the interior of the drainage ditch. A filter sleeve is installed at the water inlet end of the diversion mechanism, and the filter sleeve is located inside the pebble filter layer; A filter layer, disposed between the foundation slab and the pebble filter layer, is used to filter groundwater that passes through the foundation slab.

[0006] As a preferred technical solution of this utility model, a first water-blocking layer is provided between the pebble filter layer and the fine stone concrete surface layer, and a second water-blocking layer is provided between the foundation plate and the filter layer.

[0007] As a preferred embodiment of the present invention, both the first water-blocking layer and the second water-blocking layer include a leveling layer, and a waterproof layer is provided on the top of the leveling layer.

[0008] As a preferred technical solution of this utility model, a cast iron grate located between the two concrete embankments is detachably installed on the top of the drainage ditch, and a protective net is detachably installed on the bottom of the cast iron grate; As a preferred technical solution of this utility model, the diversion mechanism includes a main diversion pipe that runs through the concrete sill and the drainage ditch. Multiple branch pipes located inside the pebble filter layer are installed on both sides of the main diversion pipe. Multiple evenly distributed water inlet holes are opened on the branch pipes. The filter sleeve is installed on the outside of the branch pipes.

[0009] As a preferred technical solution of this utility model, both the filter layer and the filter sleeve are made of needle-punched nonwoven geotextile.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This drainage layer for preventing seepage in basement floor slabs filters groundwater that penetrates the foundation slab, preventing impurities such as silt and suspended solids from entering the pebble drainage layer. This prevents the pebble drainage layer from becoming clogged over long-term use. At the same time, the filter sleeve filters the water entering the drainage mechanism again, preventing the drainage mechanism from becoming clogged, thus ensuring the overall drainage capacity and preventing seepage from accumulating inside the pebble drainage layer. 2. The water-repellent layer used for basement floor slab seepage prevention, through the setting of a first water-blocking layer and a second water-blocking layer, can prevent water that cannot be discharged in time from the pebble filter layer from seeping through the fine stone concrete surface layer into the basement during use. The second water-blocking layer can prevent water from seeping through the foundation slab, blocking the seepage from the source. The first and second water-blocking layers can form a double-layer water-blocking protection, thereby further improving the seepage prevention capability. 3. This drainage layer for preventing seepage in basement floor slabs has multiple branch pipes that work in conjunction with the main drainage pipe to expand the water collection range and speed of the drainage mechanism, thereby avoiding the problem of untimely drainage. In addition, the setting of multiple water inlets can also increase the speed at which water in the pebble filter layer enters the branch pipes, preventing the filtration of the filter sleeve from affecting the speed of water discharge. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of the hydrophobic layer for preventing seepage in basement floor slabs provided by this utility model; Figure 2 A schematic diagram of the connection structure between the drainage ditch and the sump pit for the waterproof layer used in the basement floor slab for seepage prevention provided by this utility model; Figure 3 A schematic diagram of the main drainage pipe structure for the waterproof layer used for preventing seepage in basement floor slabs provided by this utility model; Figure 4 The present invention provides a hydrophobic layer for preventing leakage of basement floor slabs. Figure 1 Enlarged view of the structure at point A; Figure 5 The present invention provides a hydrophobic layer for preventing leakage of basement floor slabs. Figure 3 Enlarged view of the structure at point B.

[0012] The image shows: 1. Foundation slab; 2. Pebble filter layer; 3. Fine aggregate concrete surface layer; 4. Filter layer; 5. Drainage mechanism; 6. Concrete sill; 7. Cast iron grate; 8. Protective net; 9. First water-blocking layer; 10. Second water-blocking layer; 11. Filter sleeve; 12. Sump; 13. Cover plate; 14. Drainage ditch; 501. Main drainage pipe; 502. Branch pipe; 503. Inlet hole; 901. Leveling layer; 902. Waterproof layer. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0014] like Figures 1-5As shown, this embodiment proposes a drainage layer for preventing seepage in basement floor slabs, including a foundation slab 1, a pebble filter layer 2 on top of the foundation slab 1, a fine aggregate concrete surface layer 3 on top of the pebble filter layer 2, two concrete sills 6 penetrating the pebble filter layer 2 and the fine aggregate concrete surface layer 3 on top of the foundation slab 1, a drainage ditch 14 between the two concrete sills 6, a collection pit 12 connected to the end of the drainage ditch 14, and a cover plate 13 on top of the collection pit 12. The system also includes: a diversion mechanism 5, disposed inside the pebble filter layer 2, with its outlet extending through the concrete sills 6 into the drainage ditch 14; and a filter sleeve 11, installed at the inlet end of the diversion mechanism 5, and used for filtering. The filter sleeve 11 is located inside the pebble filter layer 2; the filter layer 4 is set between the foundation slab 1 and the pebble filter layer 2, and is used to filter the groundwater passing through the foundation slab 1. Both the filter layer 4 and the filter sleeve 11 are made of needle-punched non-woven geotextile. When in use, the filter layer 4 can filter the groundwater seepage that penetrates the foundation slab 1, thereby preventing impurities such as mud, sand and suspended solids carried in the groundwater from entering the pebble filter layer 2, and preventing the pebble filter layer 2 from becoming clogged during long-term use. At the same time, the filter sleeve 11 can filter the water entering the drainage mechanism 5 again, avoiding the drainage mechanism 5 from becoming clogged, thereby ensuring the overall drainage capacity and preventing seepage water from accumulating inside the pebble filter layer 2.

[0015] like Figure 1 As shown, in a preferred embodiment, based on the above method, a first water-blocking layer 9 is further provided between the pebble filter layer 2 and the fine stone concrete surface layer 3, and a second water-blocking layer 10 is provided between the foundation slab 1 and the filter layer 4. It should be noted that, through the provision of the first water-blocking layer 9 and the second water-blocking layer 10, during use, the first water-blocking layer 9 can prevent water that cannot be drained from the pebble filter layer 2 from seeping through the fine stone concrete surface layer 3 into the basement, and the second water-blocking layer 10 can prevent water seepage through the foundation slab 1, thus blocking water seepage at its source. The first water-blocking layer 9 and the second water-blocking layer 10 can form a double-layer water-blocking protection, thereby further improving the anti-leakage capability.

[0016] like Figure 1 and Figure 4 As shown, in a preferred embodiment, based on the above method, both the first water-blocking layer 9 and the second water-blocking layer 10 include a leveling layer 901, and a waterproof layer 902 is provided on top of the leveling layer 901. It should be noted that by setting the leveling layer 901, the surfaces of the foundation slab 1 and the pebble filter layer 2 can be leveled, thereby facilitating the laying of the waterproof layer 902. By setting the leveling layer 901, water seepage can be blocked.

[0017] like Figure 1As shown, in a preferred embodiment, based on the above method, a cast iron grate 7 is detachably installed on the top of the drainage ditch 14 between two concrete embankments 6, and a protective net 8 is detachably installed on the bottom of the cast iron grate 7. It should be noted that the combination of the cast iron grate 7 and the protective net 8 prevents foreign objects from falling into the drainage ditch 14, thereby avoiding blockages within the drainage ditch 14.

[0018] like Figures 1-3 As shown, in a preferred embodiment, the drainage mechanism 5 includes a main drainage pipe 501 that penetrates the concrete sill 6 and the drainage ditch 14. Multiple branch pipes 502 located inside the pebble filter layer 2 are installed on both sides of the main drainage pipe 501. Multiple evenly distributed water inlet holes 503 are provided on the branch pipes 502, and a filter sleeve 11 is installed on the outside of the branch pipes 502. It should be noted that in use, the multiple branch pipes 502 can cooperate with the main drainage pipe 501 to expand the water collection range and speed of the drainage mechanism 5, thereby avoiding the problem of untimely drainage. Furthermore, the multiple water inlet holes 503 can also increase the speed at which water in the pebble filter layer 2 enters the branch pipes 502, preventing the filtration by the filter sleeve 11 from affecting the speed of water discharge.

[0019] Specifically, the working principle of the drainage layer used for waterproofing basement floor slabs is as follows: During use, the second water-blocking layer 10 can block groundwater passing through the foundation slab 1. After the groundwater passes through the second water-blocking layer 10, it will be filtered by the filter layer 4 and enter the interior of the pebble filter layer 2. During the groundwater drainage process, the first water-blocking layer 9 will block the pebble filter layer 2 and the fine stone concrete surface layer 3, preventing the water in the pebble filter layer 2 from seeping out through the fine stone concrete surface layer 3. Then, after being filtered by the filter sleeve 11, it will enter the interior of the drainage ditch 14 along the diversion mechanism 5. The water entering the drainage ditch 14 will flow into the sump 12 for centralized collection. The water in the sump 12 can be pumped into the municipal sewage pipe outdoors.

[0020] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A waterproof layer for preventing seepage in basement floor slabs, comprising a foundation slab (1), characterized in that, The foundation slab (1) is provided with a pebble filter layer (2) on top, a fine stone concrete surface layer (3) on top of the pebble filter layer (2), and two concrete sills (6) penetrating the pebble filter layer (2) and the fine stone concrete surface layer (3) on top of the foundation slab (1). A drainage ditch (14) is provided between the two concrete sills (6), and a collection pit (12) connected to the end of the drainage ditch (14) is provided. A cover plate (13) is provided on the top of the collection pit (12). The foundation slab (1) also includes: A diversion mechanism (5) is installed inside the pebble filter layer (2), and the outlet end of the diversion mechanism (5) extends through the concrete sill (6) to the interior of the drainage ditch (14). A filter sleeve (11) is installed at the water inlet end of the diversion mechanism (5), and the filter sleeve (11) is located inside the pebble filter layer (2); A filter layer (4) is disposed between the foundation slab (1) and the pebble filter layer (2) for filtering groundwater passing through the foundation slab (1).

2. The hydrophobic layer for waterproofing basement floor slabs according to claim 1, characterized in that, A first water-blocking layer (9) is provided between the pebble filter layer (2) and the fine stone concrete surface layer (3), and a second water-blocking layer (10) is provided between the foundation plate (1) and the filter layer (4).

3. A water-repellent layer for preventing seepage in basement floor slabs according to claim 2, characterized in that, Both the first water-blocking layer (9) and the second water-blocking layer (10) include a leveling layer (901), and a waterproof layer (902) is provided on the top of the leveling layer (901).

4. A water-repellent layer for preventing leakage in basement floor slabs according to claim 1, characterized in that, The top of the drainage ditch (14) is detachably fitted with a cast iron grate (7) located between the two concrete embankments (6), and the bottom of the cast iron grate (7) is detachably fitted with a protective net (8).

5. A water-repellent layer for preventing leakage in basement floor slabs according to claim 1, characterized in that, The diversion mechanism (5) includes a main diversion pipe (501) that runs through the concrete sill (6) and the drainage ditch (14). Multiple branch pipes (502) located inside the pebble filter layer (2) are installed on both sides of the main diversion pipe (501). Multiple evenly distributed water inlet holes (503) are opened on the branch pipes (502). The filter sleeve (11) is installed on the outside of the branch pipes (502).

6. A water-repellent layer for preventing leakage in basement floor slabs according to claim 5, characterized in that, Both the filter layer (4) and the filter sleeve (11) are made of needle-punched nonwoven geotextile.

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