CN217734076U - Underground water collecting structure of foundation pit - Google Patents
Underground water collecting structure of foundation pit Download PDFInfo
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- CN217734076U CN217734076U CN202221698097.4U CN202221698097U CN217734076U CN 217734076 U CN217734076 U CN 217734076U CN 202221698097 U CN202221698097 U CN 202221698097U CN 217734076 U CN217734076 U CN 217734076U
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- drain pipe
- groundwater
- well
- strainer
- foundation pit
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Abstract
The utility model provides a foundation ditch groundwater collects structure, including the french drain and the precipitation well that communicate each other, be arranged in with the groundwater drainage to precipitation well's drain pipe in the french drain, be equipped with the strainer in the precipitation well, still including the packing filter material of the water-permeable in the french drain, the drain pipe is buried underground in the packing filter material, it has to fill between the delivery port of drain pipe and the strainer fill the packing filter material, this technical scheme can realize filtering the groundwater that flows into the precipitation well from the drainage pipe, reduces foreign matter impurity and is brought into the precipitation well, reduces foreign matter impurity to extraction exhaust influence, improves extraction quality and efficiency.
Description
Technical Field
The utility model relates to a foundation ditch drainage field especially relates to a foundation ditch groundwater collects structure.
Background
In the process of foundation pit construction, a blind ditch and a dewatering well are arranged at the bottom of the foundation pit, the blind ditch extends transversely, the coverage range of the blind ditch in the horizontal direction is enlarged, more underground water enters the blind ditch, the blind ditch is communicated with the dewatering well, the underground water entering the blind ditch enters the dewatering well under the drainage of the blind ditch to be stored so as to be pumped and discharged.
The drainage mode of present french drain does, sets up the drain pipe in the french drain, and this drain pipe is called blind ditch pipe again, and its side is equipped with a plurality of infiltration holes to supply groundwater infiltration, the straight-through precipitation well of tip of drain pipe, groundwater and foreign matter impurity in the french drain get into the inside of drain pipe from the side of drain pipe, and groundwater flows towards the precipitation well along the inner wall of drain pipe, and drive in foreign matter impurity gets into the precipitation well, lead to the groundwater foreign matter impurity in the precipitation well more, are unfavorable for the extraction and discharge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a foundation ditch groundwater collects structure realizes filtering the groundwater that flows into precipitation well from the drainage pipe, reduces the foreign matter impurity and is brought into precipitation well, reduces the foreign matter impurity to extraction exhaust influence, improves extraction quality and efficiency.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a foundation ditch groundwater collects structure, includes mutual communicating french drain and precipitation well, is arranged in the drain pipe of groundwater drainage to precipitation well in the french drain, be equipped with the strainer in the precipitation well, still includes the filter media of the permeable of packing in the french drain, the drain pipe is buried underground in the filter media, it has to fill between the delivery port of drain pipe and the strainer fill the filter media.
Further setting: the drain pipe extends downwards towards the dewatering well.
Further setting: the blind ditch is obliquely arranged and is parallel to the drain pipe.
Further setting: the upper end surface of the strainer is higher than the drain pipe.
Further setting: the blind ditch further comprises an interlayer for preventing underground water from overflowing into the foundation pit, and the interlayer covers the upper side of the blind ditch.
Further setting: the interlayer comprises a protective layer, a waterproof layer and a concrete cushion layer which are sequentially arranged, and the blind ditch is positioned at the lower side of the concrete cushion layer.
Further setting: the dewatering well is internally provided with a well pipe communicated with the upper end of the strainer, the upper end surface of the well pipe is not lower than the upper surface of the interlayer, and the interlayer is arranged on the outer side of the well pipe in a surrounding mode to fix the well pipe.
Further setting: the diameter of the dewatering well is larger than that of the strainer.
Further setting: the filling filter material is filled between the dewatering well and the strainer.
Further setting: and the outer walls of the drain pipe and the water filtering pipe are sleeved with a filter screen.
Compared with the prior art, the utility model discloses a scheme has following advantage:
1. the utility model relates to a foundation ditch groundwater collects in the structure, the filler material is full of the french drain with filling up, the mode that the drain pipe buries through whole root is arranged in the filler material, groundwater constantly rises and infiltrates in the french drain in the downside of foundation ditch, groundwater in the french drain infiltrates earlier in the filler material, get into in the drain pipe from the side of drain pipe afterwards, the filler material carries out prefilter to the groundwater that gets into the drain pipe, because of groundwater is greater than the resistance along the inner wall flow direction delivery port of drain pipe relatively from the side of drain pipe flowing out, groundwater that gets into in the drain pipe flows toward the direction that the resistance is little, flow to the delivery port of drain pipe promptly, the groundwater that flows out of the delivery port of drain pipe filters the back through the filler material, get into in the precipitation well, groundwater in the precipitation well gets into the inboard of strainer from the side of strainer, groundwater through the inboard groundwater of extraction strainer reaches the purpose that reduces groundwater content, collect the in-process that flows at groundwater, the realization is filtered the groundwater that flows in the precipitation well from the drain pipe, it is brought into the foreign matter and is brought into the precipitation well to reduce the foreign matter, reduce the influence of foreign matter to reduce the foreign matter to the foreign matter extraction drainage, improve extraction quality and extraction efficiency.
2. The utility model relates to a during foundation ditch groundwater collects the structure, the drain pipe slope was arranged, made gravity to the groundwater work in the drain pipe on the axial direction of drain pipe, for groundwater along the axial from flowing of drain pipe provides power, improves the speed and the quality of drainage.
3. The utility model relates to a during foundation ditch groundwater collects the structure, the french drain slope just is parallel with the drain pipe, makes the bottom of french drain and the shortest interval between the bottom of drain pipe equal everywhere, and the packing is the same in the thickness of the packing filter material between the bottom of french drain and drain pipe promptly, avoids the primary filter effect of local position relatively poor, prevents to influence the filter effect of totality.
4. The utility model relates to a during foundation ditch groundwater collects the structure, the interlayer was laid in the bottom of foundation ditch, and groundwater too late discharges, overflows to the upside of drain pipe, under the effect of interlayer, in back pressure groundwater gets into the drain pipe, avoids in groundwater infiltration foundation ditch, prevents to influence the foundation ditch structure.
5. The utility model relates to a during foundation ditch groundwater collects the structure, the inner wall of precipitation well also has the water permeability, can supply groundwater infiltration, and the groundwater of the direct infiltration of lateral wall from precipitation well filters through the filler material between precipitation well and the strainer, gets into the inboard of strainer, avoids bringing foreign matter magazine into the inboard of precipitation well and strainer, increases the way that groundwater collected, improves the efficiency that groundwater collected.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic cross-sectional view of a blind trench of a foundation pit groundwater collection system according to an embodiment of the present invention;
fig. 2 is a partial enlarged view of a in fig. 1 according to the present invention;
fig. 3 is a schematic view illustrating the communication between the blind ditch and the dewatering well of the foundation pit groundwater collection system according to an embodiment of the present invention.
Reference numerals: 10. an interlayer; 101. a protective layer; 102. a waterproof layer; 103. a concrete cushion layer; 20. blind ditches; 30. filling a filter material; 40. a drain pipe; 401. a water seepage hole; 50. a filter screen; 60. dewatering wells; 601. a water filter pipe; 602. a well pipe; 603. and (4) a settling tube.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1-3, the utility model provides a foundation ditch groundwater collects structure, including mutually communicating french drain 20 and precipitation well 60, be arranged in drainage pipe 40 to precipitation well 60 with the groundwater drainage in french drain 20, be equipped with strainer 601 in the precipitation well 60, still including filling the filter material 30 of the water-permeable in french drain 20, the strainer 40 is buried underground in the filter material 30, it has to fill between the delivery port of strainer 40 and strainer 601 the filter material 30.
The implementation principle is that the filling filter material 30 fills the blind ditch 20, the drain pipe 40 is arranged in the filling filter material 30 in a whole burying mode, underground water continuously swells at the lower side of the foundation pit and permeates into the blind ditch 20, the underground water in the blind ditch 20 firstly permeates into the filling filter material 30 and then enters the drain pipe 40 from the side surface of the drain pipe 40, the filling filter material 30 primarily filters the underground water entering the drain pipe 40, the resistance of the underground water flowing out from the side surface of the drain pipe 40 is relatively larger than the resistance of the underground water flowing to the water outlet along the inner wall of the drain pipe 40, the underground water entering the drain pipe 40 flows in the direction with small resistance, namely flows to the water outlet of the drain pipe 40, the underground water flowing out from the water outlet of the drain pipe 40 is filtered by the filling filter material 30 and then enters the dewatering well 60, the underground water in the dewatering well 60 enters the inner side of the dewatering pipe 601 from the side surface of the dewatering pipe 601, the purpose of reducing the content of the underground water by pumping the underground water inside of the dewatering pipe 601 is achieved, and the effect on the extraction of foreign matters and the extraction of the foreign matters and the extraction efficiency and the extraction of the foreign matters are improved in the process of the underground water collection and the flow.
The strainer 601 is the common use part in this field, and the side of strainer 601 is equipped with the hole of permeating water that a plurality of encircleed the arrangement, and the hole of permeating water filters the great foreign matter impurity of volume through the size of self diameter, makes the impurity foreign matter reduction of the inboard groundwater of strainer 601, and the inboard groundwater of extraction strainer 601 is discharged, and the effect is better.
In a particular application, the drain pipe 40 extends downwardly towards the dewatering well 60.
The drain pipe 40 is obliquely arranged, so that the gravity acts on the underground water in the drain pipe 40 in the axial direction of the drain pipe 40, power is provided for the underground water to automatically flow along the axial direction of the drain pipe 40, and the drainage speed and quality are improved.
Preferably, the blind ditch 20 is arranged obliquely and parallel to the drain pipe 40.
The blind ditch 20 inclines and is parallel with the drain pipe 40, makes the shortest interval between the bottom of blind ditch 20 and the bottom of drain pipe 40 equal everywhere, and the packing filter material 30 that fills between the bottom of blind ditch 20 and drain pipe 40 is the same promptly, avoids the preliminary filter effect of local position relatively poor, prevents to influence holistic filter effect.
The specific structure of the drain pipe 40 is that a plurality of rows of water seepage holes 401 arranged in a surrounding manner are arranged on the drain pipe 40, and two adjacent rows of water seepage holes 401 are alternately arranged along the axial direction of the drain pipe 40.
The arrangement mode of the water seepage holes 401 enables the water drainage pipe 40 to increase the water inflow of the water drainage pipe 40 on the side surface under the condition that the strength of the water drainage pipe 40 is not influenced, and the drainage effect is improved.
Still preferably, the upper end surface of the drainpipe 601 is disposed higher than the drain pipe 40.
The upper end surface of the strainer 601 is higher than the drain pipe 40, the extending direction of the water outlet of the drain pipe 40 is opposite to the side wall of the strainer 601, all the groundwater discharged from the water outlet of the drain pipe 40 enters the inner side of the strainer 601 from the side wall of the strainer 601, and the side wall of the strainer 601 filters the groundwater further.
In a further improvement, the underground water-retaining blind ditch further comprises an interlayer 10 for blocking the underground water from entering the foundation ditch, and the interlayer 10 is covered right above the blind ditch 20.
The interlayer 10 is laid at the bottom of the foundation pit, covers the blind ditch 20 directly above, underground water is not ready to be discharged and overflows to the upper side of the drain pipe 40, and the underground water is reversely pressed into the drain pipe 40 under the action of the interlayer 10, so that the underground water is prevented from permeating into the foundation pit, and the structure of the foundation pit is prevented from being influenced.
The specific structure of the interlayer 10 is that the interlayer 10 comprises a protective layer 101, a waterproof layer 102 and a concrete cushion layer 103 which are sequentially arranged, and the blind ditch 20 is positioned at the lower side of the concrete cushion layer 103.
The arrangement structure of the protective layer 101, the waterproof layer 102 and the concrete cushion layer 103 not only enables the interlayer 10 to have good strength, but also has good waterproof performance.
The protective layer 101 is concrete, and the waterproof layer 102 is a waterproof roll, which is not limited to the above materials.
In the specific implementation, a well pipe 602 communicated with the upper end of the strainer 601 is arranged in the dewatering well 60, the upper end surface of the well pipe 602 is not lower than the upper surface of the barrier 10, and the barrier 10 is arranged around the outer side of the well pipe 602 to fix the well pipe 602.
The lower end face of the well pipe 602 is lower than the ground surface height, and the lower end of the well pipe 602 plays a role in supporting the wellhead of the dewatering well 60 to prevent the wellhead from collapsing; the lower end face of the well pipe 602 is higher than the drain pipe 40, so that the extending direction of the water outlet of the drain pipe 40 is opposite to the side wall of the strainer pipe 601, but the area for supporting the outer wall of the well pipe 602 is small, and the well pipe cannot be stably fixed at the well mouth of the dewatering well 60, by arranging the interlayer 10, the interlayer 10 is in contact and abutting with the side wall of the well pipe 602, and the strength, hardness and thickness of the interlayer 10 enable the well pipe 602 to be positioned and supported by the interlayer 10 in the radial direction, so that the well mouth of the dewatering well 60 is prevented from being damaged due to movement or toppling over of the well pipe 602.
The barrier 10, in addition to acting as a back pressure against the groundwater, also has the function of providing a locating support for the well pipe 602.
In practical application, the diameter of the dewatering well 60 is larger than that of the filter pipe 601.
In a further improvement of this embodiment, the filler material 30 is filled between the dewatering well 60 and the strainer 601.
The inner wall of the precipitation well 60 also has water permeability for groundwater to permeate, and the groundwater directly permeated from the side wall of the precipitation well 60 is filtered by the filling filter material 30 between the precipitation well 60 and the filter pipes 601 and enters the inner sides of the filter pipes 601, so that foreign matters and impurities are prevented from being brought into the inner sides of the precipitation well 60 and the filter pipes 601, the way for collecting the groundwater is increased, and the efficiency for collecting the groundwater is improved.
Preferably, the outer walls of the drain pipe 40 and the strainer pipe 601 are sleeved with a filter screen 50.
In construction application, a settling pipe 603 communicated with the lower end of the strainer 601 is further arranged in the dewatering well 60; the lower end of the settling tube 603 is arranged in a closed manner.
The settling tube 603 collects fine sand and debris flowing into the strainer 601, preventing the strainer 601 from being clogged with sediment.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a foundation ditch groundwater collects structure, includes mutual french drain and precipitation well that communicate, is arranged in the drain pipe of groundwater drainage to precipitation well in the french drain, be equipped with strainer, its characterized in that in the precipitation well: the blind ditch is characterized by further comprising a permeable filling filter material filled in the blind ditch, the drain pipe is buried in the filling filter material, and the filling filter material is filled between the water outlet of the drain pipe and the water filter pipe.
2. A foundation pit groundwater collection structure as claimed in claim 1, wherein: the drain pipe is inclined downwards towards the dewatering well and extends.
3. A foundation pit groundwater collection structure as claimed in claim 2, wherein: the blind ditches are obliquely arranged and are parallel to the drain pipe.
4. A foundation pit groundwater collection structure as claimed in claim 1, wherein: the upper end surface of the strainer is higher than the drain pipe.
5. A foundation pit groundwater collection structure as claimed in claim 1, wherein: the blind ditch also comprises an interlayer for preventing underground water from overflowing into the foundation pit, and the interlayer covers the blind ditch right above the blind ditch.
6. A foundation pit groundwater collection structure as claimed in claim 5, wherein: the interlayer comprises a protective layer, a waterproof layer and a concrete cushion layer which are sequentially arranged, and the blind ditch is positioned on the lower side of the concrete cushion layer.
7. A foundation pit groundwater collection structure as claimed in claim 5, wherein: be equipped with the well casing with the upper end intercommunication of strainer in the precipitation well, the up end of well casing is not less than the upper surface of interlayer, the interlayer encircles and arranges in the outside of well casing in order to fix the well casing.
8. A foundation pit groundwater collection structure as claimed in claim 1, wherein: the diameter of the dewatering well is larger than that of the strainer.
9. A foundation pit ground water collection structure according to claim 1, wherein: the filling filter material is filled between the dewatering well and the strainer.
10. A foundation pit ground water collection structure according to claim 1, wherein: and the outer walls of the drain pipe and the strainer pipe are sleeved with a filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221698097.4U CN217734076U (en) | 2022-07-01 | 2022-07-01 | Underground water collecting structure of foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221698097.4U CN217734076U (en) | 2022-07-01 | 2022-07-01 | Underground water collecting structure of foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217734076U true CN217734076U (en) | 2022-11-04 |
Family
ID=83844398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221698097.4U Active CN217734076U (en) | 2022-07-01 | 2022-07-01 | Underground water collecting structure of foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217734076U (en) |
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2022
- 2022-07-01 CN CN202221698097.4U patent/CN217734076U/en active Active
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