CN217782107U - Water-rich region groundwater falls arranges and recycle device - Google Patents

Abstract

The utility model discloses a device for descending, draining and recycling underground water in a water-rich area, which comprises an underground water collecting tank (2), a drainage blind ditch (4), a first filtering component, a second filtering component and a recycling component; the drainage blind ditches are arranged in the range of the raft area (3), the first filtering assemblies are arranged in the drainage blind ditches, the drainage blind ditches are arranged in a net shape and are mutually communicated to form a blind ditch system, and the blind ditch system is communicated with the underground water collecting pool; constructing a covering blind ditch system on the raft foundation bed course; the underground water collecting tank is arranged in the range of the fertilizer trough area (18), and the second filtering component is arranged at the communication part of the blind ditch system and the underground water collecting tank; the recycling assembly is arranged in the underground water collecting pool, and the water outlet end of the recycling assembly extends to the outside of the underground water collecting pool and is externally connected to a water using system or a water storage facility. The utility model discloses can improve the recycle rate of groundwater, effective control ground water level reduces the risk of basic raft board seepage, fracture.

Description

Water-rich region groundwater falls to arrange and recycle device

Technical Field

The utility model relates to an underground water treatment equipment especially relates to a regional groundwater of rich water falls to arrange and recycle device.

Background

In the construction process of building engineering, underground water is one of the first hidden dangers which must be solved. In the water-rich area, if the water quantity at the bottom of the foundation pit is sufficient and cannot be drained in time, the soil body at the bottom of the foundation pit is soaked by underground water for a long time, so that the bearing capacity of the foundation can be greatly reduced, the integral instability of the enclosure structure is easily caused, and the use safety of construction safety and engineering is greatly influenced. At present, many projects can reach the effect that the basement fell to arrange through setting up the open drain of drainage or blind ditch cooperation ordinary suction pump and drawing water in the fertile groove region of foundation ditch in the work progress to guarantee the safety of construction.

But the groundwater of raft regional within range can't effectively be acted on to the groundwater of prior art's groundwater drainage mode, and behind foundation ditch fat groove backfill soil, the escape canal will be buried, covered by backfilling, can't long-term effectual realization basement is fallen and is arranged, has increaseed the possibility of basic raft seepage. Meanwhile, if the pressure of the underground water is large, the underground water in the raft area range cannot be effectively guided, drained and dredged, the reverse buoyancy of the underground water continuously acts on the basic raft, the basic raft is cracked even, and serious adverse consequences are caused to the building engineering. In addition, at the present stage, china vigorously pushes the concept of comprehensive recycling of underground water, and if the underground water is simply drained without being recycled, the waste of underground water resources is increased, and the construction requirement of environmental protection is not met.

Disclosure of Invention

An object of the utility model is to provide a regional groundwater of rich water falls to arrange and recycle device can improve the recycle ratio of groundwater, and effective control ground water level reduces the risk of basic raft board seepage, fracture.

The utility model discloses a realize like this:

a device for descending, draining and recycling underground water in a water-rich area comprises an underground water collecting pool, a drainage blind ditch, a first filtering component, a second filtering component and a recycling component; the drainage blind ditches are arranged in the raft area range of the foundation pit, the first filtering assemblies are arranged in the drainage blind ditches, the drainage blind ditches are arranged in a net shape and are mutually communicated to form a blind ditch system, and the blind ditch system is communicated with the underground water collecting pool; the top elevation of the drainage blind ditch is consistent with the bottom elevation of the raft foundation bed course, so that the raft foundation bed course is constructed in a raft area and covers a blind ditch system; the underground water collecting tank is arranged in the range of a fertilizer groove area of the foundation pit, and the second filtering component is arranged at the communication part of the blind ditch system and the underground water collecting tank; the recycling assembly is arranged in the underground water collecting pool, and the water outlet end of the recycling assembly extends to the outside of the underground water collecting pool and is externally connected to a water using system or a water storage facility.

First filtering component include geotechnological cloth and first rubble layer, first rubble layer is filled in the drainage french drain, geotechnological cloth parcel is around first rubble layer, and the top overlap joint of the both ends at first rubble layer of geotechnological cloth.

Two layers of oil felt paper are laid on the top of the geotextile in a stacking mode, and the raft foundation bed course is constructed on the two layers of oil felt paper.

The width of the oil felt paper is larger than that of the drainage blind ditch, so that the oil felt paper can completely cover the drainage blind ditch.

The second filtering assembly comprises a second rubble layer and a rubble reinforcing steel net piece, the second rubble layer is filled in a section where the drainage blind ditch is communicated with the underground water collecting tank, and the rubble reinforcing steel net piece is wrapped around the second rubble layer.

The underground water collecting tank comprises a tank body cushion layer, a tank body and a cover plate; the pool body cushion layer is constructed in the fertilizer tank area, and the top elevation of the pool body cushion layer is lower than the bottom elevation of the drainage blind ditch; the pool body is constructed on the pool body cushion layer, and the blind ditch system is communicated with the upper part of the pool body through a second filtering component; the cover plate covers the opening at the top of the tank body, the recycling component is arranged in the tank body, and the water outlet end of the recycling component penetrates through the cover plate.

The width of the pool cushion layer is larger than that of the pool body, and the length of the pool cushion layer is larger than that of the pool body.

The recycling assembly comprises a liquid level controller and a drain pipe, the liquid level controller is arranged at the bottom of the tank body, and the water inlet end of the drain pipe is connected with the liquid level controller; a preformed hole is formed on the cover plate, and the water outlet end of the drain pipe penetrates through the cover plate through the preformed hole and is externally connected to a water using system or a water storage facility.

The outside cover of drain pipe be equipped with the protection tube, the aperture of preformed hole is not less than the external diameter of protection tube.

The underground water collecting pool is positioned on one side of the fertilizer tank area, which is far away from the building envelope.

Compared with the prior art, the utility model, following beneficial effect has:

1. the drainage blind ditches and the underground water collecting pool are arranged, so that the drainage blind ditches arranged in a net shape in the raft area can effectively collect the underground water in the foundation pit and drain the underground water into the underground water collecting pool, thereby facilitating the recovery and utilization of the underground water; simultaneously, drainage blind ditch construction can reach the purpose of control ground water level through converging in the below of raft foundation bed course to avoid basic raft seepage, the fracture risk that groundwater buoyancy leads to.

2. The utility model discloses owing to be equipped with the recycle subassembly, monitor the ground water level in the pond through liquid level controller to exceeding and predetermine the water level after with groundwater pump sending to ground water system or water storage facility, reach the purpose that ground water level monitoring and groundwater utilized, also reduced the waste of water resource, improved the recycle who groundwater, prolonged the precipitation cycle of groundwater, in order to guarantee underground building structure's construction safety.

3. The utility model discloses owing to be equipped with first filtering component and second filtering component, first filtering component can carry out the prefilter to the groundwater in the drainage french drain to carry out the secondary filter through the groundwater of second filtering component convection current income groundwater collecting pit, the drainage of the follow-up groundwater of being convenient for has also been guaranteed simultaneously and has been discharged unobstructed.

Drawings

FIG. 1 is a plan view of the arrangement of drainage blind ditches in the groundwater drainage and recycling device in the water-rich area of the utility model;

FIG. 2 is a vertical view of the drainage blind ditch and the groundwater collecting tank in the device for draining and recycling groundwater in the water-rich area of the utility model;

FIG. 3 is a sectional side view of the first filter assembly of the device for drainage and recycling of groundwater in the water-rich area;

FIG. 4 is a top view of the cover plate of the groundwater drainage and recycling device in the water-rich area of the present invention;

fig. 5 is a sectional view showing the arrangement of the drainage pipe and the protection pipe in the device for descending, draining and recycling groundwater in the water-rich area.

In the figure, 1 a building envelope, 2 a groundwater collecting tank, 3 a raft area, 4 drainage blind ditches, 5 geotextiles, 6 a first gravel layer, 7 felt paper, 8 a raft foundation cushion layer, 9 a second gravel layer, 10 steel mesh sheets, 11 a pool cushion layer, 12 a pool body, 13 a liquid level controller, 14 drainage pipes, 15 cover plates, 16 protection pipes, 17 reserved holes and 18 fertilizer groove areas.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1 and fig. 2, a device for descending, draining and recycling groundwater in a water-rich area comprises a groundwater collecting tank 2, a drainage blind ditch 4, a first filtering component, a second filtering component and a recycling component; the drainage blind ditches 4 are arranged in the raft area 3 of the foundation pit, the first filtering assemblies are arranged in the drainage blind ditches 4, the drainage blind ditches 4 are arranged in a net shape and are mutually communicated to form a blind ditch system, and the blind ditch system is communicated with the underground water collecting pool 2; the top elevation of the drainage blind ditch 4 is consistent with the bottom elevation of the raft foundation bed course 8, so that the raft foundation bed course 8 is constructed in the raft area 3 and covers the blind ditch system; the underground water collecting tank 2 is arranged in the range of a fertilizer groove area 18 of a foundation pit, and the second filtering component is arranged at the communication part of the blind ditch system and the underground water collecting tank 2; the recycling assembly is arranged in the underground water collecting pool 2, and the water outlet end of the recycling assembly extends to the outside of the underground water collecting pool 2 and is externally connected to a water using system or a water storage facility.

The drainage blind ditch 4 arranged in a net shape is arranged in the range of a raft plate area 3 of the whole foundation pit, the drainage blind ditch 4 is positioned below the bottom elevation of a raft plate foundation bed layer 8, and underground water is drained into the underground water collecting pool 2 which is arranged in a fertilizer groove area 18 of the foundation pit in advance. Water in the underground water collecting pool 2 is pumped to a water using system or a water storage facility outside the foundation pit through the recycling assembly, so that a stable water source can be provided for concrete maintenance and enclosure spraying dust fall and the like, and the emission and recycling of underground water are realized.

Referring to fig. 2 and 3, the first filter assembly includes a geotextile 5 and a first gravel layer 6, the first gravel layer 6 is filled in the drainage blind ditch 4, the geotextile 5 is wrapped around the first gravel layer 6, and two ends of the geotextile 5 are overlapped on the top of the first gravel layer 6.

The groundwater can be primarily filtered through the first gravel layer 6 and the geotextile 5. Preferably, the depth of the drainage blind ditch 4 is 800mm, and the width is 1200mm; 300g/m is adopted for the geotextile 5 ² The overlapping length of the two ends of the geotextile 5 is not less than 500mm; the diameter of the crushed stone in the first crushed stone layer 6 is 5-40mm.

Referring to fig. 3, two layers of oil felt paper 7 are layered on the top of the geotextile 5, and a raft foundation bed 8 is constructed on the two layers of oil felt paper 7. The oil felt paper 7 is used for isolating the geotextile 5 and the raft foundation bed course 8, and can prevent concrete slurry of the raft foundation bed course 8 from penetrating into the drainage blind ditch 4 through the first gravel layer 6 and the geotextile 5 when pouring to influence the drainage function of the drainage blind ditch 4.

The width of the felt paper 7 is larger than that of the drainage blind ditch 4, so that the felt paper 7 can completely cover the drainage blind ditch 4, and the felt paper 7 can ensure the isolation of the drainage blind ditch 4 from the raft foundation bed course 8.

Preferably, both sides of the oil felt paper 7 are 400mm wider than the drain gutters 4, and the oil felt paper 7 is laid in two layers along the length direction of the drain gutters 4.

Referring to fig. 2, the second filtering assembly comprises a second gravel layer 9 and a gravel reinforcing mesh 10, the second gravel layer 9 is filled in a section of the drainage blind ditch 4 communicated with the underground water collecting tank 2, and the gravel reinforcing mesh 10 is wrapped around the second gravel layer 9.

And the groundwater converged into the groundwater collecting tank 2 is subjected to secondary filtration through a second gravel layer 9 and gravel steel bar meshes 10. Preferably, the filling length of the second gravel layer 9 is 1000mm, and the diameter of the gravel in the second gravel layer 9 is not less than 30mm; the broken stone reinforcing steel bar net piece 10 adopts a reinforcing steel bar net piece of C10@150x150 mm, and plays a role in filtering sediment.

Referring to fig. 2, the groundwater collecting tank 2 includes a tank cushion layer 11, a tank 12 and a cover plate 15; the tank body cushion layer 11 is constructed in the fertilizer tank area 18, and the top elevation of the tank body cushion layer 11 is lower than the bottom elevation of the drainage blind ditch 4; the pool body 12 is constructed on the pool body cushion layer 11, and the blind ditch system is communicated with the upper part of the pool body 12 through a second filtering component; the cover plate 15 covers the opening at the top of the tank body 12, the recycling component is arranged in the tank body 12, and the water outlet end of the recycling component penetrates through the cover plate 15. The pool body 12 is used for collecting the underground water converged by the blind ditch system, and the underground water is pumped to a ground water using system or a water storage facility when needed, so that the underground water is convenient to recycle.

The width of the pool cushion layer 11 is larger than that of the pool body 12, and the length of the pool cushion layer 11 is larger than that of the pool body 12, so that stable support of the pool body 12 is ensured.

Preferably, the tank body cushion layer 11 can be formed by pouring C20 plain concrete, the thickness is 100mm, and the edge of the tank body cushion layer 11 extends to the outer side of the tank body 12 by 200mm; the tank body 12 can be constructed by C30 reinforced concrete, the thickness of the tank wall is 200mm, and the length and the width of the tank body 12 can be adjusted according to the underground water quantity in actual construction. The cover plate 15 can be prefabricated by reinforced concrete, the thickness is 100mm, the cover plate 15 can be manufactured and installed in a one-piece or split mode, the maintenance and the replacement of the recycling component are convenient, and the lap joint width of the cover plate 15 and the top of the pool body 12 is 200mm.

Referring to fig. 2 and 4, the recycling assembly includes a liquid level controller 13 and a water discharge pipe 14, the liquid level controller 13 is disposed at the bottom of the tank body 12, and a water inlet end of the water discharge pipe 14 is connected to the liquid level controller 13; a preformed hole 17 is formed on the cover plate 15, and the water outlet end of the drain pipe 14 penetrates through the cover plate 15 through the preformed hole 17 and is externally connected to a water using system or a water storage facility.

Preferably, the liquid level controller 13 may adopt a water pumping pump body with a liquid level monitoring function, and may adopt a mechanical or electronic mode to monitor the liquid level height in the tank body 12, so as to automatically start the water pumping mode in time when the water level exceeds a set height, otherwise, the water pumping mode is not started, and the monitoring of the underground water level is realized. The liquid level controller 13 pumps the groundwater in the tank body 12 to a water using system or a water storage facility through a drain pipe 14, so that the groundwater can be conveniently used.

Referring to fig. 5, a protection pipe 16 is coaxially sleeved outside the drain pipe 14, and the diameter of the prepared hole 17 is not smaller than the outer diameter of the protection pipe 16. The protective pipe 16 can prevent the drain pipe 14 from being damaged in the construction process, and meanwhile, when the fertilizer groove area 18 is backfilled, the protective pipe 16 can resist the lateral pressure of the backfilled soil, so that the drainage work of the foundation pit can be normally carried out.

Preferably, the drain pipe 14 can be a DN80 hose, the protection pipe 16 can be a DN100 steel pipe, and the aperture of the prepared hole 17 is 100mm.

Referring to fig. 1, the groundwater collecting pond 2 is located at a side of the fertilizer trough region 18 far away from the building envelope 1 to ensure the safety of the building envelope 1.

Referring to fig. 1 to 5, the construction process of the present invention is:

1. and determining the positions of the drainage blind ditch 4 and the underground water collecting tank 2.

(1) The drainage blind ditches 4 are arranged in a net shape in the range of the raft plate area 3 of the foundation pit according to the actual underground water condition of the engineering.

(2) The underground water collecting tank 2 is arranged in a fertilizer tank area 18 of the foundation pit and is far away from one side of the enclosure structure 1 of the foundation pit as far as possible.

2. And constructing a drainage blind ditch 4 and an underground water collecting tank 2.

(1) After the foundation earthwork is excavated to the designed elevation, the construction of the drainage blind ditch 4 can be started.

The top elevation of the drainage blind ditch 4 is consistent with the bottom elevation of the foundation mat layer, and the drainage blind ditch 4 is 800mm deep and 1200mm wide. The inner side of the drainage blind ditch 4 is backfilled by crushed stones with the diameter of 5-40mm to form a first crushed stone layer 6, and the periphery of the crushed stones is 300g/m ² The geotextile 5 is wrapped. The geotextile 5 is closed in an overlapping mode, an overlapping point is arranged at the top of the drainage blind ditch 4, and the overlapping width is 500mm.

In order to prevent concrete slurry of the raft foundation bed course 8 from permeating the first gravel layer 6 through the geotextile 5 and influencing the water permeation effect of the drainage blind ditch 4, after the geotextile 5 is used for taking the construction of the receiving head, two layers of felt paper 7 are laid on the top of the geotextile 5, and the two sides of the felt paper 7 are 400mm wider than the drainage blind ditch 4.

(2) The pool body 12 of the underground water collecting pool 2 is a C30 reinforced concrete retaining wall with the thickness of 200mm, a pool body cushion layer 11 of C20 plain concrete with the thickness of 100mm is arranged at the bottom of the pool body 12, and the two sides of the pool body cushion layer 11 are respectively wider than the pool body 12 200mm. A cover plate 15 made of prefabricated reinforced concrete with the thickness of 100mm is arranged at the top of the collecting tank 12, and the cover plate 15 is manufactured and installed in a slicing mode, so that the liquid level controller 13 is convenient to overhaul and replace; the overlapping width of the cover plate 15 and the tank body 12 is 200mm. The cover plate 15 is provided with a phi 100 preformed hole 17 according to actual conditions, and the preformed hole 17 can be freely passed through by the DN80 drainage pipe 14 and the DN100 protection pipe 16.

(3) Drainage french drain 4 is equipped with the long silt filter belt of 1000mm with 2 junctions of groundwater collecting pit, and silt filter belt inboard is equipped with C10@150X150 rubble reinforcing bar net piece 10 all around, fills the rubble that the diameter is greater than or equal to 30mm simultaneously, forms second rubble layer 9, plays the effect of filtering silt.

3. A liquid level controller 13 is arranged.

After the underground water collecting tank 2 is constructed, the liquid level controller 13 is directly placed at the bottom in the tank body 12. The liquid level controller 13 has a water pumping function in the prior art, and can control the water pump with the liquid level in a mechanical or electronic mode. When the ground water level exceeds a certain elevation, the liquid level controller 13 automatically starts the pumping mode, otherwise, the pumping mode does not work. According to the principle, the monitoring of the water level in the tank body 12 can be realized, and further, a certain monitoring effect on the underground water level is achieved.

In order to ensure the construction quality of the building structure, the water level of the basement is required to be below 500mm of the pit bottom in the construction process according to national relevant specifications and design, and the water level of the basement can be ensured to meet the construction requirements through the automatic drainage function of the liquid level controller 13.

4. Installation of the drain pipe 14.

The drain pipe 14 passes through the prepared hole 17 to be connected with the liquid level controller 13, and the outside of the drain pipe 14 is provided with a DN100 steel protection pipe 16 to prevent the drain pipe 14 from being damaged in the construction process. When the backfilling soil in the fertilizer groove area 18 is constructed, the lateral pressure of the backfilling soil can be resisted, and the normal operation of the drainage and drainage of the foundation pit can be ensured.

5. And (4) lowering, draining and recycling the basement.

After being collected by the blind ditch system, the underground water is filtered and precipitated by the first filtering component in the drainage blind ditch 4, is drained to the underground water collecting tank 2, and is further filtered by the second filtering component before entering the underground water collecting tank 2. The groundwater collected in the groundwater collecting tank 2 is pumped to a water using system or a water storage facility on the use site by the liquid level controller 13, and can be used for concrete structure maintenance or dust spraying and the like, so that the groundwater can be recycled.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. The utility model provides a regional groundwater of rich water falls arranges and recycle device which characterized by: comprises a groundwater collecting pool (2), a drainage blind ditch (4), a first filtering component, a second filtering component and a recycling component; the drainage blind ditches (4) are arranged in the range of a raft area (3) of the foundation pit, the first filtering assemblies are arranged in the drainage blind ditches (4), the drainage blind ditches (4) are arranged in a net shape and are mutually communicated to form a blind ditch system, and the blind ditch system is communicated with the underground water collecting pool (2); the top elevation of the drainage blind ditch (4) is consistent with the bottom elevation of the raft foundation bed course (8), so that the raft foundation bed course (8) is constructed in the raft area (3) and covers the blind ditch system; the underground water collecting tank (2) is arranged in the range of a fertilizer groove area (18) of a foundation pit, and the second filtering component is arranged at the communication part of the blind ditch system and the underground water collecting tank (2); the recycling component is arranged in the underground water collecting pool (2), and the water outlet end of the recycling component extends to the outside of the underground water collecting pool (2) and is externally connected to a water using system or a water storage facility.

2. The device for descending, draining and recycling groundwater in the water-rich area according to claim 1, wherein the device comprises: first filtering component include geotechnological cloth (5) and first rubble layer (6), first rubble layer (6) are filled in drainage french drain (4), geotechnological cloth (5) parcel is around first rubble layer (6), and the top overlap joint of both ends at first rubble layer (6) of geotechnological cloth (5).

3. The device for lowering, discharging and recycling groundwater in the water-rich area according to claim 2, wherein: two layers of oil felt paper (7) are laid on the top of the geotextile (5) in a stacking mode, and the raft foundation bed course (8) is constructed on the two layers of oil felt paper (7).

4. The device for descending, draining and recycling groundwater in the water-rich area according to claim 3, wherein the device comprises: the width of the oil felt paper (7) is larger than that of the drainage blind ditch (4), so that the oil felt paper (7) can completely cover the drainage blind ditch (4).

5. The device for lowering, discharging and recycling groundwater in the water-rich area according to claim 1, wherein: the second filtering component comprises a second rubble layer (9) and rubble steel bar net pieces (10), the second rubble layer (9) is filled in a section where the drainage blind ditch (4) is communicated with the underground water collecting pool (2), and the rubble steel bar net pieces (10) are wrapped around the second rubble layer (9).

6. The device for descending, draining and recycling groundwater in the water-rich area according to claim 1 or 5, wherein the device comprises: the underground water collecting tank (2) comprises a tank body cushion layer (11), a tank body (12) and a cover plate (15); the pool body cushion layer (11) is constructed in the fertilizer tank area (18), and the top elevation of the pool body cushion layer (11) is lower than the bottom elevation of the drainage blind ditch (4); the pool body (12) is constructed on the pool body cushion layer (11), and the blind ditch system is communicated with the upper part of the pool body (12) through a second filtering component; the cover plate (15) covers the opening at the top of the tank body (12), the recycling component is arranged in the tank body (12), and the water outlet end of the recycling component penetrates through the cover plate (15).

7. The device for lowering, discharging and recycling groundwater in the water-rich area according to claim 6, wherein: the width of the pool cushion layer (11) is larger than that of the pool body (12), and the length of the pool cushion layer (11) is larger than that of the pool body (12).

8. The device for lowering, discharging and recycling groundwater in the water-rich area according to claim 6, wherein: the recycling assembly comprises a liquid level controller (13) and a water drainage pipe (14), the liquid level controller (13) is arranged at the bottom of the tank body (12), and the water inlet end of the water drainage pipe (14) is connected with the liquid level controller (13); a preformed hole (17) is formed on the cover plate (15), and the water outlet end of the drain pipe (14) penetrates through the cover plate (15) through the preformed hole (17) and is externally connected to a water using system or a water storage facility.

9. The device for lowering, discharging and recycling groundwater in the water-rich area according to claim 8, wherein: the outside cover of drain pipe (14) be equipped with protection tube (16), the aperture of preformed hole (17) is not less than the external diameter of protection tube (16).

10. The device for descending, draining and recycling groundwater in the water-rich area according to claim 6, wherein the device comprises: the underground water collecting tank (2) is positioned on one side of the fertilizer trough area (18) far away from the building envelope (1).

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