CN219732055U - Foundation pit finished product drainage system - Google Patents
Foundation pit finished product drainage system Download PDFInfo
- Publication number
- CN219732055U CN219732055U CN202320978495.XU CN202320978495U CN219732055U CN 219732055 U CN219732055 U CN 219732055U CN 202320978495 U CN202320978495 U CN 202320978495U CN 219732055 U CN219732055 U CN 219732055U
- Authority
- CN
- China
- Prior art keywords
- ditch
- drainage
- water collecting
- finished
- ditches
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000002689 soil Substances 0.000 claims abstract description 17
- 239000004575 stone Substances 0.000 claims description 15
- 239000004746 geotextile Substances 0.000 claims description 11
- 239000000047 product Substances 0.000 claims 7
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Sewage (AREA)
Abstract
The utility model relates to a foundation pit finished product drainage system which comprises a foundation pit, wherein two drainage ditches are arranged at the bottom of the foundation pit, a plurality of water collecting wells are uniformly arranged on the drainage ditches, and a plurality of blind ditches are uniformly arranged between the two drainage ditches; a finished product water collecting well is paved in the drainage ditch, a finished product water collecting well is arranged in the water collecting well, and an inner support plastic blind ditch is paved in the blind ditch. The drainage system is scientific in design, reasonable in structure, simple in construction and good in use effect, and the drainage system is formed by the internal support plastic blind ditch, the finished drainage ditch and the finished water collecting well, so that the difficulty that the soil is hard and the well cannot be sunk is overcome, the problem that the foundation pit is collapsed due to massive seepage of water caused by long-time exposure is avoided, the stability of a base side slope is ensured, the construction cost is reduced, and the construction period is shortened.
Description
Technical Field
The utility model belongs to the technical field of building construction, in particular to drainage construction of a foundation pit, and particularly relates to a foundation pit finished product drainage system.
Background
With the rapid development of economy in recent years, many residences and public buildings are commonplace in underground space construction, and the water content of foundation soil is increased in areas close to the river beach and with higher underground water levels, so that the shear strength and the soil pressure of the soil are changed, the stability of the side slope of a foundation pit is affected, and the safety of operators cannot be ensured.
For a foundation pit which is close to a river beach, has higher underground water level, longer exposure time and hard soil, a conventional well-point dewatering well cannot be adopted, the seepage flow of underground water is large, a slope toe brick masonry drainage ditch and a water collecting well are easy to collapse, and the construction difficulty is high.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a foundation pit finished product drainage system.
The utility model is realized by the following technical scheme:
a foundation pit finished product drainage system comprises a square foundation pit, wherein two drainage ditches are respectively formed along two opposite edges of the bottom of the foundation pit, and a plurality of water collecting wells are respectively and uniformly distributed on the two drainage ditches; a plurality of main blind ditches are uniformly distributed between the two drainage ditches, and two ends of each main blind ditch are respectively communicated with two water collecting wells corresponding to the positions on the two drainage ditches;
a concrete cushion layer is poured at the bottom of the ditch of the water collecting well, a finished product water collecting well is supported on the concrete cushion layer, a water suction pump is arranged in the finished product water collecting well, and plain soil is backfilled outside the finished product water collecting well;
a concrete cushion layer is poured at the bottom of the drainage ditch section between every two adjacent water collecting wells, a finished drainage ditch is supported on the concrete cushion layer, plain soil is backfilled outside the finished drainage ditch, a non-woven geotextile is paved on a cover plate of the finished drainage ditch, and graded broken stone is backfilled on the non-woven geotextile; the concrete cushion layer finds slopes from the middle point to the water collecting wells at two sides, and two ends of the finished drainage ditch are respectively connected with the finished water collecting wells in the water collecting wells at two sides of the finished drainage ditch;
the bottom of the main blind ditch is backfilled with a gravel layer, an inner supporting plastic blind ditch is supported on the gravel layer, and graded broken stone is backfilled outside the inner supporting plastic blind ditch; the gravel cushion layer is used for finding slopes from the middle points to the water collecting wells at the two sides, and the two ends of the inner support plastic blind ditch are respectively connected with the finished product water collecting wells in the water collecting wells at the two sides.
Further, a secondary blind ditch is arranged at the middle position between every two adjacent main blind ditches, and two ends of the secondary blind ditches are respectively communicated with drainage ditch sections on two sides of the secondary blind ditches; the bottom of the auxiliary blind ditch is backfilled with a gravel layer, an inner supporting plastic blind ditch is supported on the gravel layer, and graded broken stone is backfilled outside the inner supporting plastic blind ditch; the gravel cushion layer finds slopes from the middle point to the drainage ditch sections on the two sides, and the two ends of the inner support plastic blind ditch are respectively connected with the finished drainage ditches in the drainage ditch sections on the two sides.
Further, the outer side of the inner support plastic blind ditch is wrapped with nonwoven geotextile.
Further, the slope of the concrete pad and gravel pad was found to be 2%.
The drainage system of the utility model is to excavate drainage ditches on both sides of the pit bottom of the foundation pit, pre-embed finished drainage ditches in the drainage ditches, graded broken stone backfill the ditch; secondly, excavating a water collecting well ditch on each drainage ditch at a certain distance longitudinally, pre-burying finished water collecting wells in the water collecting well ditches, and backfilling the ditches with plain soil; thirdly, digging a blind ditch between the two drainage ditches at a certain distance transversely, paving an inner support plastic blind ditch wrapped with non-woven geotechnical cloth in the blind ditch, and backfilling the ditch with graded broken stone. The underground water is converged to a finished product drainage ditch through the internal support plastic blind ditch, and is drained to a finished product water collecting well through the finished product drainage ditch and finally discharged. The foundation pit finished product drainage system is not influenced by geological conditions, the underground water pressure can be reduced, the underground water affecting the operation range is eliminated, the safety of the underground space construction of operators is guaranteed, the internal support plastic blind ditch is made of plastic materials, the overall flexibility is good, the internal support plastic blind ditch is not extruded and deformed due to soil extrusion, overload or uneven settlement of a foundation and the like, meanwhile, the grooves are backfilled with graded broken stone, and the bearing capacity of the foundation is not influenced. The finished product escape canal, finished product sump pit, the finished product internal support plastic blind ditch are excavated and filled with the follow-up, can avoid the problem that the foundation pit collapses because of exposing for a long time and leading to a large amount of seepage water, have ensured the stability of foundation pit side slope.
The drainage system is scientific in design, reasonable in structure, simple in construction and good in use effect, and the drainage system is formed by the internal support plastic blind ditch, the finished drainage ditch and the finished water collecting well, so that the difficulty that the soil is hard and the well cannot be sunk is overcome, the problem that the foundation pit is collapsed due to massive seepage of water caused by long-time exposure is avoided, the stability of a base side slope is ensured, the construction cost is reduced, and the construction period is shortened.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
Fig. 1 is a plan view of a drainage system of the present utility model.
Fig. 2 is a schematic cross-sectional view of the drain.
FIG. 3 is a schematic cross-sectional view of a primary and secondary blind drain.
Fig. 4 is a schematic cross-sectional view of a water collection well.
In the figure: 1-foundation pit, 2-drainage ditch, 3-water collecting well, 4-main blind ditch, 5-auxiliary blind ditch, 6-concrete cushion layer, 7-finished product water collecting well, 8-plain soil, 9-finished product drainage ditch, 10-nonwoven geotechnical cloth, 11-graded broken stone, 12-gravel cushion layer and 13-internal support plastic blind ditch.
Detailed Description
For a better understanding of the present utility model, reference will be made to the following description of the utility model taken in conjunction with the accompanying drawings and examples. The features of the embodiments and examples of the present utility model may be combined with each other without any conflict.
The foundation pit finished product drainage system comprises a square foundation pit 1, wherein one drainage ditch 2 is respectively formed along two opposite edges of the bottom of the foundation pit 1, and a plurality of water collecting wells 3 are respectively uniformly distributed on the two drainage ditches 2; a plurality of main blind ditches 4 are uniformly distributed between the two drainage ditches 2, and two ends of each main blind ditch 4 are respectively communicated with two water collecting wells 3 corresponding to the positions on the two drainage ditches 2.
As shown in fig. 4, a concrete cushion layer 6 is poured at the bottom of the ditch of the water collecting well 3, a finished water collecting well 7 is supported on the concrete cushion layer 6, a water suction pump is arranged in the finished water collecting well 7, and plain soil 8 is backfilled outside the finished water collecting well 7.
As shown in fig. 3, a concrete cushion layer 6 is poured at the bottom of the drainage ditch 2 section between every two adjacent water collecting wells 3, a finished drainage ditch 9 is supported on the concrete cushion layer 6, plain soil 8 is backfilled outside the finished drainage ditch 9, a non-woven geotextile 10 is paved on a cover plate of the finished drainage ditch 9, and graded broken stone 11 is backfilled on the non-woven geotextile 10; the concrete cushion 6 is used for finding slopes from the middle point to the water collecting wells on two sides, the gradient is 2%, and two ends of the finished drainage ditch 9 are respectively connected with the finished water collecting wells 7 in the water collecting wells 3 on two sides.
As shown in fig. 2, the bottom of the main blind ditch 4 is backfilled with a gravel cushion layer 12, an inner supporting plastic blind ditch 13 is supported on the gravel cushion layer 12, a nonwoven geotextile 10 is wrapped outside the inner supporting plastic blind ditch 13, and graded broken stone 11 is backfilled outside the inner supporting plastic blind ditch 13; wherein the gravel cushion layer 12 finds a slope with a midpoint toward the water collecting wells 3 on two sides, the slope is 2%, and two ends of the inner support plastic blind ditch 13 are respectively connected with the finished water collecting wells 7 in the water collecting wells 3 on two sides.
A secondary blind ditch 5 is arranged at the middle position between every two adjacent main blind ditches 4, and two ends of the secondary blind ditches 5 are respectively communicated with drainage ditch 2 sections on two sides of the secondary blind ditches; as shown in fig. 2, the bottom of the auxiliary blind ditch 5 is backfilled with a gravel cushion layer 12, an inner supporting plastic blind ditch 13 is supported on the gravel cushion layer 12, a nonwoven geotextile 10 is wrapped outside the inner supporting plastic blind ditch 13, and graded broken stone 11 is backfilled outside the inner supporting plastic blind ditch 13; wherein, the gravel cushion 12 finds the slope from the middle point to the two sides of the drainage ditch 2 sections, the gradient is 2%, and the two ends of the internal support plastic blind ditch 13 are respectively connected with the finished drainage ditches 9 in the two sides of the drainage ditch 2 sections.
The construction method of the foundation pit 1 finished product drainage system comprises the following steps:
1. measuring pay-off
And discharging geometric dimensions of the drainage ditch 2, the main blind ditch 4 and the auxiliary blind ditch 5 at the bottom of the foundation pit 1, spraying a contour line on the ground by using lime, and rechecking the dimensions and elevation according to the actual conditions on site after the lofting is completed.
2. Trench excavation
After paying off, manually excavating the grooves of the drainage ditch 2, the grooves of the water collecting well 3, the grooves of the main blind ditch 4 and the grooves of the auxiliary blind ditch 5 by utilizing an excavator, wherein the cross section sizes of the main blind ditch 4 and the auxiliary blind ditch 5 are 300mm multiplied by 600mm, the cross section size of the drainage ditch 2 is 400mm multiplied by 800mm, the elevation of the bottom of each groove is checked, the inspection and acceptance are confirmed, and the next working procedure is carried out after the qualified products are qualified.
3. Construction of inner support plastic blind ditch 13
And backfilling gravel layers 12 with the thickness of 50mm at the bottoms of the grooves of the main blind ditch 4 and the auxiliary blind ditch 5, finding slopes from the central point to the two ends, manually backfilling and compacting, paving an inner support plastic blind ditch 13 with the diameter of 250mm, wrapping a non-woven geotextile 10 outside, backfilling graded broken stones 11 and compacting.
4. Construction of finished drainage ditch 9
Pouring a C15 concrete cushion layer 6 with the thickness of 100mm at the bottom of a ditch 2, finding a slope to water collecting wells 3 on two sides by using a central point, sequentially placing the slope of 2% into a finished product ditch 9, butting buckles at the joint, sealing the joints by using sealant, backfilling the ditch by using plain soil 8, covering a cover plate, paving a non-woven geotechnical cloth 10 above the cover plate, and backfilling graded broken stone 11 with the thickness of 50mm to serve as a reverse filtering layer of the ditch.
5. Construction of finished product water collecting well 7
C15 concrete cushion 6 with the thickness of 100mm is poured at the bottom of a ditch of the water collecting well 3, a finished water collecting well 7 is placed, the joint of a finished water drainage ditch 9 and the finished water collecting well 7 is sealed by sealant, then plain soil 8 is backfilled and compacted, and the finished water collecting well 7 is placed into a water suction pump so as to pump groundwater out of the ground.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (4)
1. The utility model provides a foundation ditch finished product drainage system, includes square foundation ditch, its characterized in that: two opposite edges along the bottom of the foundation pit are respectively provided with a drainage ditch, and a plurality of water collecting wells are respectively and uniformly distributed on the two drainage ditches; a plurality of main blind ditches are uniformly distributed between the two drainage ditches, and two ends of each main blind ditch are respectively communicated with two water collecting wells corresponding to the positions on the two drainage ditches;
a concrete cushion layer is poured at the bottom of the ditch of the water collecting well, a finished product water collecting well is supported on the concrete cushion layer, a water suction pump is arranged in the finished product water collecting well, and plain soil is backfilled outside the finished product water collecting well;
a concrete cushion layer is poured at the bottom of the drainage ditch section between every two adjacent water collecting wells, a finished drainage ditch is supported on the concrete cushion layer, plain soil is backfilled outside the finished drainage ditch, a non-woven geotextile is paved on a cover plate of the finished drainage ditch, and graded broken stone is backfilled on the non-woven geotextile; the concrete cushion layer finds slopes from the middle point to the water collecting wells at two sides, and two ends of the finished drainage ditch are respectively connected with the finished water collecting wells in the water collecting wells at two sides of the finished drainage ditch;
the bottom of the main blind ditch is backfilled with a gravel layer, an inner supporting plastic blind ditch is supported on the gravel layer, and graded broken stone is backfilled outside the inner supporting plastic blind ditch; the gravel cushion layer is used for finding slopes from the middle points to the water collecting wells at the two sides, and the two ends of the inner support plastic blind ditch are respectively connected with the finished product water collecting wells in the water collecting wells at the two sides.
2. The foundation pit finished product drainage system of claim 1, wherein: a secondary blind ditch is arranged at the middle position between every two adjacent main blind ditches, and two ends of the secondary blind ditches are respectively communicated with drainage ditch sections on two sides of the secondary blind ditches; the bottom of the auxiliary blind ditch is backfilled with a gravel layer, an inner supporting plastic blind ditch is supported on the gravel layer, and graded broken stone is backfilled outside the inner supporting plastic blind ditch; the gravel cushion layer finds slopes from the middle point to the drainage ditch sections on the two sides, and the two ends of the inner support plastic blind ditch are respectively connected with the finished drainage ditches in the drainage ditch sections on the two sides.
3. The foundation pit finished product drainage system of claim 1 or 2, wherein: the outer side of the inner support plastic blind ditch is wrapped with nonwoven geotextile.
4. A pit end product drainage system according to claim 3, wherein: the slope of the concrete pad and gravel pad was found to be 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320978495.XU CN219732055U (en) | 2023-04-26 | 2023-04-26 | Foundation pit finished product drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320978495.XU CN219732055U (en) | 2023-04-26 | 2023-04-26 | Foundation pit finished product drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219732055U true CN219732055U (en) | 2023-09-22 |
Family
ID=88061246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320978495.XU Active CN219732055U (en) | 2023-04-26 | 2023-04-26 | Foundation pit finished product drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219732055U (en) |
-
2023
- 2023-04-26 CN CN202320978495.XU patent/CN219732055U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109797769B (en) | Collapsible loess area underground comprehensive pipe gallery foundation structure and construction method thereof | |
| CN111677095A (en) | Construction method of drainage pipeline | |
| CN111236284A (en) | Basement bottom and periphery underground water drainage method and structure | |
| CN105804007A (en) | Reinforced soil bank wall structure based on beach soft foundation | |
| CN109826065B (en) | High-fill roadbed protection system and construction method thereof | |
| CN114875936A (en) | Construction method for drainage and protection of high cut slope side ditch | |
| CN111648383A (en) | Internal drainage method for loess high-fill side slope | |
| CN114215074A (en) | Ditch earthwork backfilling method | |
| CN112832288A (en) | Anti-floating structure of sloping field building basement and construction method thereof | |
| CN219732055U (en) | Foundation pit finished product drainage system | |
| CN115418908B (en) | Pavement sponge seepage and drainage system and construction method | |
| CN111424685A (en) | Deep water falling hole processing structure and method for backfilling foundation in large karst depression | |
| CN102561368B (en) | Flexible supporting construction of pre-compaction reinforced soil piece | |
| CN114703805A (en) | Combined seepage-proofing and sewage-intercepting system and method for adjusting plain reservoir | |
| CN209816896U (en) | Collapsible loess area utility tunnel foundation structure | |
| CN113279408A (en) | Method for carrying out engineering pile construction at bottom of deep soft soil foundation pit | |
| CN108487331B (en) | Underground structure anti-floating system integrating gallery drainage and fertilizer groove seepage prevention | |
| CN111851185A (en) | Self-compacting cement soil widening roadbed and construction method | |
| CN219909051U (en) | Assembled gravity retaining wall structure | |
| CN114508013B (en) | Granite residual soil half-filling half-excavation roadbed structure in rainy region and construction method thereof | |
| CN220035481U (en) | Recoverable reuse combined type drainage system of building foundation ditch | |
| CN212153647U (en) | Drainage facility suitable for water source area protection district excavation highway section | |
| CN221167881U (en) | Foundation pit hydrophobic structure suitable for under rich water stratum condition | |
| CN217480203U (en) | Roadbed slope drainage | |
| CN217174870U (en) | Foundation pit bottom drainage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |