CN218580680U - Foundation pit drainage device - Google Patents

Abstract

The utility model discloses a foundation ditch drainage device, its technical scheme main points are: including the foundation ditch body, foundation ditch body bottom is equipped with the pre-buried bar groove of a plurality of, a plurality of pre-buried bar inslot is equipped with cavity bar and arranges water stand, be equipped with drainage component in the cavity bar arranges water stand, drainage component bottom joint drain pipe, the drain pipe up end is equipped with a plurality of holes of permeating water, the drain pipe is responsible for the intercommunication through pipe connection spare and water conservancy diversion, the water conservancy diversion is responsible for and switches on to in the sump pit, be equipped with the water pump that is used for drawing water in the sump pit.

Description

Foundation pit drainage device

Technical Field

The utility model relates to a foundation ditch drainage field especially relates to a foundation ditch drainage device.

Background

At present, drainage/precipitation is often needed when a foundation pit is excavated, the existing common technology is open water collection ditch or light well point precipitation aiming at the foundation pit with small area and low water level reduction, and the two precipitation modes have some defects in the aspects of construction process or cost.

1. Open ditch catchments

1) Occupying a construction operation surface: the foundation pit bottom area needs to be increased due to the fact that drainage ditches are excavated on the surface of the substrate, originally, the small foundation pits are mostly limited by excavation sites, and slope supporting measures are possibly required to be added due to the arrangement of the drainage ditches, so that the amount of earthwork excavation and backfilling engineering is increased, and the construction period is prolonged and the cost is increased due to the earthwork excavation and the slope supporting;

2) And (3) flushing the surface with water flow to form a soft mud layer: the open ditch principle of catchmenting is that the basement is following and the side slope seeps water to the basement surface, and the slope goes into the escape canal back along the escape canal to the sump pit, takes away through the water pump again, and the basement surface seepage water is along flowing water when the slope goes into the escape canal and erodees, causes the basement surface soil layer to float soft, has reduced the foundation bearing capacity, is unfavorable for the escape canal protection: the surface of the drainage ditch is exposed, the surface of the drainage ditch is easy to collide and trample during construction operation to cause the collapse of the ditch wall, the maintenance cost is increased, the slope toe of the foundation pit side slope collapses, the drainage ditch is generally arranged around the outer edge of the foundation (at the slope toe of the foundation pit side slope), and the slope toe earthwork is easy to collapse due to long-term water soaking at the position to form potential safety hazards.

2. Light well point

1) The operation is inconvenient: the light well point dewatering pipe is arranged to be close to a drilling machine, a ramp is needed to be made on the side slope of the foundation pit for the drilling machine to pass up and down, and meanwhile, enough mechanical operation space needs to be arranged in the foundation pit. Therefore, at least one side of the foundation pit needs to be provided with a ramp condition during excavation, and the foundation pit can disturb the original soil close to the foundation. The ramp arrangement increases the engineering quantity of earth excavation and backfilling;

2) The occupied construction period is long: reserving a soil layer for mechanical construction during foundation earthwork excavation, and excavating and cleaning the foundation for the second time after the dewatering machine exits from the foundation pit;

3) The cost performance is not high: often, a project, namely a small foundation pit needing precipitation is few, and construction time intervals are not connected, so that the cost is relatively high in each implementation;

therefore, the defects of the two schemes are improved, and a novel foundation pit drainage device is very necessary to be designed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the invention aims to provide the foundation pit drainage device which has the characteristics of simplicity and convenience in operation, short construction period, convenience in protection, lower cost, capability of ensuring foundation quality and the like.

In order to realize the purpose, the utility model adopts the following technical scheme:

this kind of foundation ditch drainage device, including the foundation ditch body, foundation ditch body bottom is equipped with a plurality of embedded bar groove, a plurality of embedded bar inslot is equipped with cavity bar and arranges water stand, be equipped with drainage component in the cavity bar arranges water stand, drainage component bottom run-on water pipe, the drain pipe up end is equipped with a plurality of holes of permeating water, the drain pipe is responsible for the intercommunication through pipe connection spare and water conservancy diversion, the water conservancy diversion is responsible for and switches on to the sump pit in, be equipped with the water pump that is used for drawing water in the sump pit.

Further, the drainage assembly comprises a coarse sand water filtering layer and a gravel water filtering layer, the coarse sand water filtering layer is located on the upper portion of the interior of the hollow strip-shaped drainage seat, the gravel water filtering layer is located in the middle of the hollow strip-shaped drainage seat, a convex water collecting groove is arranged at the bottom of the hollow strip-shaped drainage seat, and a drainage pipe is connected to the bottom of the convex water collecting groove.

Furthermore, drain pipe upper end is equipped with a plurality of quincunx hole of permeating water, the outer end parcel of drain pipe has nylon geotechnological cloth.

Furthermore, a plurality of through holes are formed in the side wall of the hollow strip-shaped drainage seat on the two sides of the coarse sand water filtering layer and the gravel water filtering layer.

Furthermore, the coarse sand water filtering layer adopts coarse sand with the diameter of 5-10mm, and the broken stone water filtering layer adopts broken stones with the diameter of 10-20 mm.

Furthermore, the diameter of the quincunx water permeable holes is 5-8mm.

Furthermore, the drain pipe is a pvc pipe.

Furthermore, the front end of the drain pipe far away from the flow guide main pipe is higher than the rear end close to the flow guide main pipe, and the drain pipe is obliquely arranged downwards to automatically collect the seepage water permeating into the drain pipe and flow into the flow guide main pipe.

The utility model has the advantages that:

1. the drain pipe is provided with holes in advance and is wrapped with nylon geotextile, and a pipe ditch is dug out along the belt when the foundation pit is dug, and the drain pipe is placed into the drain pipe and is connected with the flow guide main pipe. The upper half pipe trench of the drainage pipe is filled with a coarse sand water filtering layer and a broken stone water filtering layer in sequence from the bottom surface of the foundation pit, so that the operation of drainage work is simple and convenient, the operation surface is not occupied, the process interval is not considered, and the continuous operation of earth excavation and foundation construction is ensured;

2. the drainage pipe is buried underground, and an open ditch and a horizontal pipe for well point dewatering which are arranged openly are not arranged, so that foundation construction and maintenance of the drainage pipeline are facilitated;

3. the earth excavation of the part of the drainage ditch outside the working surface and the maintenance of the water ditch during the drainage are saved;

4. the foundation quality is guaranteed, the drain pipe is arranged below the foundation, the excavated pipe ditch part is used for replacing and filling broken stones and a coarse sand water filtering layer, the relative area is small, the water scouring on the surface of the foundation of an open ditch is avoided, and the up-and-down ramp of the drilling machine close to foundation soil disturbance of the foundation is avoided being influenced.

Drawings

Fig. 1 is a schematic plan view of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of the hollow strip-shaped drain socket of FIG. 2;

FIG. 4 is an enlarged view of the drain pipe of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

reference numerals: 1. a foundation pit body; 2. a water collecting well; 20. a water pump; 3. a flow guide main pipe; 30. a pipe connection; 4. coarse sand water filtering layer; 5. a water filtering layer for breaking stones; 6. a hollow strip-shaped drainage seat; 60. a through hole; 61. a convex water collecting tank; 7. a drain pipe; 70. water permeable holes; 71. nylon geotextile.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or point connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the working principle of the present embodiment is as follows: the drainage pipe 7 is perforated and wrapped with nylon geotextile 71 in advance, a pipe ditch is dug out along the belt when a foundation pit is dug, the drainage pipe 7 is placed into and connected with the flow guide main pipe 3, the upper half pipe ditch of the drainage pipe 7 is filled with a coarse sand water filtering layer 4 and a gravel water filtering layer 5 from the bottom surface of the foundation pit in sequence, the drainage pipe 7 is obliquely arranged to be connected with the flow guide main pipe 3 and connected with the flow guide main pipe 3 through a pipeline connecting piece 30, the water seepage in the drainage pipe 7 automatically flows into the flow guide main pipe 3, the open end of the flow guide main pipe 3 extends to the corner water collecting well 2 of the foundation pit, and the collected water seepage is discharged out of the foundation pit through a water pump 20 in the water collecting well 2.

This kind of foundation ditch drainage device, including foundation ditch body 1, 1 bottom of foundation ditch body is equipped with a plurality of embedded bar groove, a plurality of embedded bar inslot is equipped with cavity bar drainage seat 6, be equipped with drainage assembly in the cavity bar drainage seat 6, drainage assembly bottom run-on water pipe 7, 7 up end of drain pipe is equipped with a plurality of holes 70 of permeating water, 3 intercommunications are responsible for with the water conservancy diversion through pipe connection spare 30 to drain pipe 7, the water conservancy diversion is responsible for 3 and is switched on to the sump pit 2 in, be equipped with the water pump 20 that is used for drawing water in the sump pit 2.

Water in the foundation pit is guided through the drainage assembly, flows into the guide main pipe 3 through the drain pipe 7, flows into the water collecting well 2, and is discharged from the water collecting well 2 through the water pump 20, so that the water in the foundation pit is prevented from being discharged in a guide mode.

As a modified specific implementation mode, the drainage assembly comprises a coarse sand water filtering layer 4 and a gravel water filtering layer 5, the coarse sand water filtering layer 4 is located on the upper portion inside the hollow strip-shaped drainage seat 6, the gravel water filtering layer 5 is located in the middle of the hollow strip-shaped drainage seat 6, a convex water collecting groove 61 is arranged at the bottom of the hollow strip-shaped drainage seat 6, and the bottom of the convex water collecting groove 61 is connected with the drainage pipe 7.

The water seepage after filtration of the coarse sand water filtering layer 4 and the broken stone water filtering layer 5 can be gathered in the convex water collecting tank 61, so that the water seepage of the water permeating holes 70 of the water draining pipe 7 is facilitated.

Through the setting of coarse sand water filtering layer 4 and rubble water filtering layer 5, can not influence the support intensity at foundation ditch top promptly, can filter the grit of infiltration again, can directly not get into the hole 70 of permeating water, prevent to cause the hole 70 of permeating water to block up.

As a modified specific implementation mode, a plurality of quincunx water permeable holes 70 are formed in the upper end of the drain pipe 7, and the outer end of the drain pipe 7 is wrapped with nylon geotextile 71.

Through the setting in the hole 70 of permeating water, will filter in can getting into drain pipe 7, leading-in to the water conservancy diversion is responsible for 3 through drain pipe 7 in, and the setting of nylon geotechnological cloth 71 can be responsible for 3 the hole 70 of permeating water of water conservancy diversion and protect, prevents that the grit from blockking up the bleeder vent.

As a modified specific implementation mode, a plurality of through holes 60 are arranged on the side wall of the hollow strip-shaped drainage seat 6 at two sides of the coarse sand water filtering layer 4 and the crushed stone water filtering layer 5.

Through the through-hole 60 that both sides set up, can be with moisture all around to the inside infiltration of cavity bar drainage seat 6, carry out the water conservancy diversion to the moisture around the drainage seat.

As a specific embodiment of improvement, coarse sand with the diameter of 5-10mm is adopted in the coarse sand water filtering layer 4, and 10-20mm of broken stones are adopted in the broken stone water filtering layer 5.

The filtering effect is achieved through the arrangement of coarse sand and broken stones.

As a modified specific embodiment, the diameter of the quincunx water-permeable holes 70 is 5-8mm.

As a modified specific embodiment, the drain pipe 7 adopts a pvc pipe.

As a modified specific embodiment, the front end of the drain pipe 7 far away from the flow guide main pipe 3 is higher than the rear end of the flow guide main pipe 3, and the drain pipe 7 is obliquely arranged downwards to automatically collect the seepage water seeping into the drain pipe 7 and flow into the flow guide main pipe 3.

Through the inclined arrangement, the drain pipe 7 can automatically flow downwards and automatically converge in the diversion main pipe 3, and the effect of automatic diversion is formed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (8)

1. The utility model provides a foundation ditch drainage device, includes foundation ditch body (1), its characterized in that: foundation ditch body (1) bottom is equipped with the pre-buried bar groove of a plurality of, a plurality of be equipped with cavity bar in the pre-buried bar inslot and drain bar seat (6), be equipped with drainage component in cavity bar drainage seat (6), drainage pipe (7) are connected to drainage component bottom, drain pipe (7) up end is equipped with a plurality of holes (70) of permeating water, drain pipe (7) are responsible for (3) intercommunication through pipe connection spare (30) and water conservancy diversion, the water conservancy diversion is responsible for (3) and switches on to sump pit (2) in, be equipped with in sump pit (2) and be used for the water pump (20) that draw water.

2. A foundation pit drainage device according to claim 1, wherein: the drainage assembly comprises a coarse sand water filtering layer (4) and a gravel water filtering layer (5), the coarse sand water filtering layer (4) is located on the upper portion of the interior of the hollow strip-shaped drainage seat (6), the gravel water filtering layer (5) is located in the middle of the hollow strip-shaped drainage seat (6), a convex water collecting groove (61) is arranged at the bottom of the hollow strip-shaped drainage seat (6), and a drainage pipe (7) is connected to the bottom of the convex water collecting groove (61).

3. A foundation pit drainage device according to claim 1 or 2, wherein: the upper end of the drain pipe (7) is provided with a plurality of quincunx water permeable holes (70), and the outer end of the drain pipe (7) is wrapped with nylon geotextile (71).

4. A foundation pit drainage device according to claim 2, wherein: and a plurality of through holes (60) are arranged on the side walls of the hollow strip-shaped drainage seats (6) at the two sides of the coarse sand water filtering layer (4) and the gravel water filtering layer (5).

5. A foundation pit drainage device according to claim 2, wherein: the coarse sand water filtering layer (4) adopts coarse sand with the diameter of 5-10mm, and the gravel water filtering layer (5) adopts 10-20mm of gravel.

6. A foundation pit drainage device according to claim 3, characterized in that: the diameter of the quincuncial water permeable holes (70) is 5-8mm.

7. A foundation pit drainage device according to claim 3, wherein: the drain pipe (7) adopts a pvc pipe.

8. A foundation pit drainage arrangement according to claim 1, characterized in that: the front end of the drain pipe (7) far away from the flow guide main pipe (3) is higher than the rear end close to the flow guide main pipe (3), and the drain pipe (7) is obliquely arranged downwards to automatically collect the seepage water permeating into the drain pipe (7) and flow into the flow guide main pipe (3).

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