CN210917423U

CN210917423U - Drainage structures falls in foundation ditch

Info

Publication number: CN210917423U
Application number: CN201921588749.7U
Authority: CN
Inventors: 邱桂标; 蒋文国; 唐广; 李强
Original assignee: Zhonghenghui Construction Co ltd
Current assignee: Junjiang Construction Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-07-03
Anticipated expiration: 2029-09-23

Abstract

The utility model relates to a drainage structures falls in foundation ditch belongs to foundation ditch drainage technology field, including deep basal pit, the immersible pump, the drinking-water pipe with set up in the sump pit bottom, the one end of drinking-water pipe and the output intercommunication of immersible pump, the other end and municipal drainage ditch intercommunication, the stone drainage layer has been laid to sump pit ground bottom, be provided with the mount in the sump pit, the mount includes many vertical outer tubes and connects the horizontal pole, slide in the outer tube and wear to be equipped with interior pole, the top fixedly connected with handle of interior pole, the lower extreme fixedly connected with mounting bracket of interior pole, set up on the outer wall of outer tube and supply interior pole and mounting bracket fixed connection and along the gliding expansion joint of vertical direction, immersible pump. Through fixing the mounting bracket at a certain distance from the outer tube bottom wall, after the sump pit is put into to the messenger mount, the immersible pump is higher than the sump pit bottom wall, effectively avoids the immersible pump to inhale the pump body with the mud impurity that the sump pit bottom wall deposits, guarantees that immersible pump work efficiency is stable.

Description

Drainage structures falls in foundation ditch

Technical Field

The utility model relates to a foundation ditch drainage technology field, in particular to drainage structures falls in foundation ditch.

Background

The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. When the depth of the foundation pit is below the natural underground water level, underground water can continuously infiltrate into the pit. In order to ensure that the foundation pit can be constructed under a dry condition and prevent the problems of slope instability, foundation sand running, pit bottom uplift and the like, drainage work needs to be done. The existing foundation pit dewatering and drainage method comprises the following steps: open drain and water collecting well precipitation, light well point water purification, jet well point precipitation and the like, wherein the open drain and water collecting well precipitation method is the most common.

Chinese patent with grant publication number CN207436078U discloses a deep basal pit drainage structure, including deep basal pit, drainage well and with the communicating underdrain of drainage well, drainage well sets up deep basal pit bottom surface, the underdrain is the slope setting, drainage well's lateral wall is equipped with the underdrain that is located the underdrain below, be equipped with the subassembly that draws water that is used for evacuation drainage well water-logging in the deep basal pit, the subassembly that draws water is including the water strainer that is located drainage well, the water strainer is inside cavity upper end open structure, the upper end of water strainer rotates and is connected with the end cover that is used for sealing the water strainer, be equipped with the immersible pump in the water strainer, the delivery port of immersible pump has cup jointed the drain cylinder, the other end of drain cylinder passes water strainer lateral wall and fixed connection on the lateral wall of water strainer, fixedly connected with water supply pipe on the drain. Through the protective action of the water filtering cover and the end cover, the problem that the submersible pump cannot smoothly drain water when being buried by foundation pit soil is solved.

However, because the drainage well in the deep foundation pit is usually deep, and the submersible pump generally needs to be installed at the bottom of the drainage well to pump out the underground water in the drainage well, but the underground water gathered at the bottom of the drainage well is usually turbid, and when the submersible pump pumps out the underground water, the submersible pump is easy to suck the stones and the precipitated mud at the bottom of the drainage well into the submersible pump, so that the submersible pump is blocked, and the pumping efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drainage structures falls in foundation ditch has the advantage that promotes foundation ditch and fall drainage efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a foundation pit drainage structure comprises a deep foundation pit, a submersible pump, a water pumping pipe and a water collecting well arranged at the bottom of the deep foundation pit, wherein one end of the water pumping pipe is communicated with the output end of the submersible pump, the other end of the water collecting well is communicated with a municipal drainage ditch, a stone drainage layer is paved at the bottom of the water collecting well, a fixed frame is arranged in the water collecting well and comprises a plurality of vertical outer sleeves and connecting cross rods, the vertical outer sleeves are uniformly arranged along the circumferential direction of the water collecting well at intervals, the bottom ends of the outer sleeves are arranged on the top surface of the stone drainage layer, an inner rod is slidably arranged in the outer sleeves, the top end of the inner rod penetrates out of the outer sleeves and is fixedly connected with a handle, the lower end of the inner rod is fixedly connected with a mounting frame, a movable opening for fixedly connecting the inner rod, and the outer sleeve is provided with a fixing piece for fixing the inner rod.

According to the technical scheme, after the water collecting well is formed, the submersible pump is fixedly connected to the mounting frame, then the handle at the top end of the inner rod on the mounting frame is pulled, the bottom wall of the mounting frame is higher than the bottom end of the outer sleeve rod by a certain distance, then the inner rod and the outer sleeve rod are fixedly connected together through the fixing piece, finally the fixing frame is hoisted together and placed at the top of the pebble water filtering layer in the water collecting well, the water pumping work can be started, mud impurities precipitated on the bottom wall of the water collecting well are effectively prevented from being sucked into a pump body by the submersible pump, and the; after groundwater in the sump pit is taken out completely, loosen the mounting to put down the mounting bracket and make the mounting bracket place on the stone drainage layer, the immersible pump of being convenient for carries out the drainage work of ending to the sump pit, makes sump pit fall drainage work high-efficient orderly, promotes the foundation ditch and falls drainage efficiency.

The utility model discloses further set up to: the mounting is the bolt, the perforation with bolt looks adaptation is seted up to the outer wall of outer tube, the outer wall of interior pole is seted up with the through-hole of perforation looks adaptation, the through-hole is provided with a plurality ofly along the length direction of inner rod, the bolt is worn to establish in the perforation to pass a through-hole.

Through above-mentioned technical scheme, hold the handle at the workman and carry the mounting bracket from a distance of mount bottom back, align the through-hole on the perforation on the outer tube and the interior pole with the bolt, then insert wherein, can fix mounting bracket and mount, convenient operation improves workman's dismouting efficiency.

The utility model discloses further set up to: a plurality of blind ditches are formed in the bottom of the deep foundation pit and are arranged in a criss-cross mode, geotechnical cloth is laid on the bottom wall of each blind ditch, and each blind ditch is connected with the corresponding water collecting well.

Through above-mentioned technical scheme, set up many vertically and horizontally staggered's french drains of arranging at the diapire of deep basal pit to finally communicate with the sump pit, lay geotechnological cloth simultaneously in the french drain, collect fast and lead rainwater and the construction water that the deep basal pit bottom assembles, and prevent effectively that during moisture infiltration soil of french drain below, accelerate the foundation ditch and fall drainage efficiency.

The utility model discloses further set up to: be provided with the filtration fill that is used for filtering the surface water that the sump pit opening part flows in on the mount, the filtration fill is located the top of immersible pump, the top fixedly connected with of filtration fill is used for pulling up the pull ring of filtration fill, the fixed board of accepting that is used for accepting the filtration fill that is provided with on the outer tube, the top surface level of filtration fill is not higher than the diapire level of french drain when filtration fill and accepting the board butt.

Through the technical scheme, place back in the sump pit at the mount hoist and mount, will filter by the workman and fight and put into the sump pit, make to filter to fight and place on the board is accepted on the outer sleeve pipe, make the filter fill can filter come from the sump pit opening and by the massive stone, disintegrating slag and wrapping bag etc. of the earth's surface aquatic that the french drain direction flowed into in the sump pit, effectively avoid the immersible pump to be smashed bad or by the wrapping bag, disintegrating slag jam by the stone, guarantee immersible pump normal operating, improve foundation ditch and fall drainage efficiency.

The utility model discloses further set up to: the top surface of filter hopper has laid the filter cloth, the top surface of filter cloth sets firmly the rubble layer.

Through above-mentioned technical scheme, lay filter cloth and rubble layer from bottom to top in proper order in filtering the fill, effectively filter the mud in the surface water to fix mud in the rubble layer, effectively avoid the sedimentation of drainage well bottom mud, guarantee the normal work operation of immersible pump.

The utility model discloses further set up to: and a guide pipe for the water pumping pipe to pass through is arranged on the side wall of the filter hopper.

Through above-mentioned technical scheme, when the workman put down the filter bowl, insert the drain pipe card of connecting on the immersible pump in the guide tube, effectively avoid the drain pipe because receive the filter bowl extrusion make cross sectional area reduce and cause the efficiency of drawing water to reduce, guarantee the normal efficiency of drawing water of immersible pump.

The utility model discloses further set up to: the lateral wall upper berth of sump pit is equipped with the brick layer of permeating water, be provided with the window on the lateral wall on the brick layer of permeating water, the window is provided with a plurality ofly along the circumference of sump pit, radially being provided with the aqueduct that inserts in earth along the sump pit in the window, set up the open-ended inlet opening on the outer wall of aqueduct, the inlet opening is provided with a plurality ofly along the length direction interval of aqueduct.

Through above-mentioned technical scheme, the one deck brick layer that permeates water is laid in the laminating on the inner wall of sump pit, can prevent effectively that sump pit lateral wall earth from collapsing, takes into account the infiltration effect simultaneously to a plurality of windows are seted up at the interval on the brick layer that permeates water, then establish the aqueduct in the window interpolation, and the accessible aqueduct leads and collects the moisture in the soil property around the sump pit, accelerates the infiltration efficiency of soil property around the sump pit, improves foundation ditch and falls drainage efficiency.

The utility model discloses further set up to: one end of the water guide pipe extending into the water collecting well is coated with non-woven fabrics.

Through above-mentioned technical scheme, stretch into the one end cladding one deck non-woven fabrics of sump pit at the aqueduct, can filter the groundwater that flows into in the sump pit in the aqueduct, effectively avoid during mud or stone flow in the sump pit, effectively avoid the sediment of mud of drainage well bottom, guarantee the immersible pump normal work operation.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

firstly, after the water collecting well is opened, fixedly connecting a submersible pump to an installation frame, then pulling a handle at the top end of an inner rod on the installation frame to enable the bottom wall of the installation frame to be higher than the bottom end of an outer sleeve rod by a certain distance, then fixedly connecting the inner rod and the outer sleeve rod together, and finally hoisting the installation frame together to be placed at the top of a pebble water filtering layer in the water collecting well to enable the submersible pump to be higher than the bottom wall of the water collecting well, so that slurry impurities precipitated on the bottom wall of the water collecting well are effectively prevented from being sucked into a pump body by the submersible;

the filter hopper can filter large blocks of stones, crushed slag, packaging bags and the like in surface water which comes from the opening of the water collecting well and is guided by the blind drain to flow into the water collecting well, so that the submersible pump is effectively prevented from being broken by the stones or being blocked by the packaging bags and the crushed slag, the normal working operation of the submersible pump is ensured, and the drainage efficiency of the foundation pit is improved;

thirdly, the one deck brick layer that permeates water is laid in the laminating on the inner wall of sump pit, can effectively prevent that sump pit lateral wall earth from collapsing, takes into account the infiltration effect simultaneously to a plurality of windows are seted up at the interval on the brick layer that permeates water, then insert the aqueduct in the window, and the accessible aqueduct leads and collects the moisture in the soil property around the sump pit, accelerates the infiltration efficiency of soil property around the sump pit, improves foundation ditch and falls drainage efficiency.

Drawings

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

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic view of the overall structure of the fixing frame of the present invention.

Reference numerals: 1. a deep foundation pit; 11. a submersible pump; 12. a water pumping pipe; 2. a water collecting well; 21. filtering the water layer with stones; 3. a fixed mount; 31. an outer sleeve; 311. a movable opening; 32. connecting the cross bars; 33. perforating; 4. a mounting frame; 41. an inner rod; 42. a handle; 43. a bolt; 44. a through hole; 5. blind ditches; 51. geotextile; 6. a filter hopper; 61. a pull ring; 62. a bearing plate; 63. filtering cloth; 64. a crushed stone layer; 65. a guide tube; 7. a permeable brick layer; 71. a window; 72. a water conduit; 73. a water inlet hole; 74. a nonwoven fabric.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the foundation pit drainage structure comprises a deep foundation pit 1, a submersible pump 11, a water pumping pipe 12 and a water collecting well 2. The sump pit 2 sets up in the bottom of deep basal pit 1, and immersible pump 11 sets up in sump pit 2, and the one end of drinking-water pipe 12 and the delivery port intercommunication of immersible pump 11, the other end stretch out in deep basal pit 1 and the parallel connection lets in the municipal drainage ditch. The bottom of deep basal pit 1 is seted up many vertically and horizontally staggered's french drains 5, and french drain 5 and sump pit 2 intercommunication are laid one deck geotechnological cloth 51 at the ditch bottom of french drain 5, can be fast with the leading-in sump pit 2 of rainwater and the construction water in the deep basal pit 1.

As shown in fig. 2 and 3, a stone water-filtering layer 21 is laid at the bottom of the water collecting well 2, a water-permeable brick layer 7 is laid on the side wall of the water collecting well 2, a window 71 is arranged on the side wall of the water-permeable brick layer 7, a plurality of windows 71 are arranged along the circumferential direction of the water collecting well 2, at least two groups of windows 71 are arranged along the depth direction of the water collecting well 2, and the two groups of windows 71 on adjacent horizontal heights are staggered in orientation. A water guide pipe 72 penetrates through the window 71, the water guide pipe 72 is arranged along the radial direction of the water collecting well 2, one end of the water guide pipe 72 is inserted into soil, a plurality of water inlet holes 73 with upward openings are formed in the pipe wall of the water guide pipe 72 inserted into the soil, and the water inlet holes 73 are distributed at intervals along the length direction of the water guide pipe 72. The other end of the water conduit 72 extends into the water collecting well 2, the nozzle of the water conduit is wrapped with non-woven fabrics 74, and the non-woven fabrics 74 are fixed with the water conduit 72 through a rubber ring.

As shown in fig. 2 and 3, the fixing frame 3 is placed on the stone water filtering layer 21, the fixing frame 3 includes an outer sleeve 31 and a connecting cross rod 32, a plurality of outer sleeves 31 are uniformly arranged along the circumferential direction of the water collecting well 2 at intervals, the outer sleeves 31 are vertically arranged, and two adjacent outer sleeves 31 are fixedly connected into a whole through the connecting cross rod 32. The bottom end of the outer sleeve 31 abuts against the top wall of the stone filter layer 21. Slide in the outer tube 31 and wear to be equipped with interior pole 41, the top of interior pole 41 stretches out outer tube 31 and enough handle 42 of fixed connection, and interior pole 41 bottom and mounting bracket 4 fixed connection are connected many simultaneously to interior pole 41, and the position that is close the bottom on the outer wall of outer tube 31 is seted up and is supplied interior pole 41 and mounting bracket 4 fixed connection and mounting bracket 4 gliding activity mouth 311 on the outer loop bar. The outer wall of outer tube 31 is equipped with the perforation 33 that runs through itself near the position of top, and the through-hole 44 that runs through itself is seted up near the position of self top on the outer wall of interior pole 41, and the through-hole 44 has seted up a plurality ofly on interior pole 41 along the length direction of interior pole 41, wears to be equipped with bolt 43 in the perforation 33, and a perforation 33 on interior pole 41 is passed simultaneously to bolt 43.

As shown in fig. 2 and 3, the submersible pump 11 is fixedly mounted on the mounting frame 4, and in combination with fig. 4, the outer wall of the outer sleeve 31 is fixedly provided with a receiving plate 62, the filter hopper 6 is placed on the receiving plate 62, and the filter cloth 63 and the gravel layer 64 are sequentially laid in the filter hopper 6 from bottom to top for filtering mud, garbage and the like. The side wall of the filter hopper 6 is provided with a guide pipe 65 for the water pumping pipe 12 to pass through, and the top of the filter hopper 6 is fixedly provided with a pull ring 61 for facilitating workers to lift the filter hopper 6.

The specific working process is as follows: after 2 seting up the completion at the sump pit, earlier with 11 fixed connection of immersible pump on mounting bracket 4, then the handle 42 on pole 41 top in the pulling mounting bracket 4, make the diapire of mounting bracket 4 be higher than one section distance of the bottom of mantle fiber, then align perforation 33 on the outer tube 31 of bolt 43 and a through-hole 44 on interior pole 41, insert wherein, can fix mounting bracket 4 and mount 3, at last put into 2 interior stone drainage layers 21's of sump pit top with mount 3 simultaneous hoisting, can begin the work of drawing water, effectively avoid immersible pump 11 to inhale the pump body with the mud impurity that 2 diapire of sump pit deposit, guarantee 11 work efficiency of immersible pump stable.

After groundwater in the sump pit 2 is completely taken out, the bolt 43 is taken out, and the mounting bracket 4 is put down to make the mounting bracket 4 place on the stone water filtering layer 21, so that the submersible pump 11 is convenient to carry out ending drainage work on the sump pit 2, the drainage work of the sump pit 2 is efficient and orderly, and the drainage efficiency of the foundation pit is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a drainage structures falls in foundation ditch, includes deep basal pit (1), immersible pump (11), drinking-water pipe (12) and sets up in sump pit (2) of deep basal pit (1) bottom, the one end of drinking-water pipe (12) and the output intercommunication of immersible pump (11), the other end and municipal drainage ditch intercommunication, its characterized in that: the stone water filtering layer (21) is laid at the bottom of the water collecting well (2), a fixing frame (3) is arranged in the water collecting well (2), the fixing frame (3) comprises a plurality of vertical outer sleeves (31) which are arranged along the circumferential direction of the water collecting well (2) at even intervals and a connecting cross rod (32) which is connected with the adjacent outer sleeves (31), the bottom end of each outer sleeve (31) is arranged on the top surface of the stone water filtering layer (21), an inner rod (41) is arranged in each outer sleeve (31) in a sliding mode, the top end of each inner rod (41) penetrates out of each outer sleeve (31) and is fixedly connected with a handle (42), a mounting frame (4) is fixedly connected with the lower end of each inner rod (41), a movable opening (311) which is fixedly connected with the inner rod (41) and the mounting frame (4) and slides along the vertical direction is formed in the outer wall of each outer sleeve (31, the outer sleeve (31) is provided with a fixing piece for fixing the inner rod (41).

2. A foundation pit dewatering and drainage structure as claimed in claim 1, wherein: the mounting is bolt (43), the outer wall of outer tube (31) is seted up and is perforated (33) with bolt (43) looks adaptation, the outer wall of interior pole (41) is seted up and is perforated through-hole (44) of (33) looks adaptation, through-hole (44) are provided with a plurality ofly along the length direction of interior pole (41), bolt (43) are worn to establish in perforation (33) to pass a through-hole (44).

3. A foundation pit dewatering and drainage structure as claimed in claim 2, wherein: many blind ditches (5) have been seted up to the bottom of deep basal pit (1), many blind ditches (5) vertically and horizontally staggered arranges, geotechnological cloth (51) have been laid to the diapire of blind ditch (5), blind ditch (5) link to each other with sump pit (2).

4. A foundation pit dewatering and drainage structure as claimed in claim 3, wherein: be provided with on mount (3) and be used for filtering sump (2) the surface water's that the opening part flows in filtration fill (6), filtration fill (6) are located the top of immersible pump (11), the top fixedly connected with of filtration fill (6) is used for pulling up pull ring (61) of filtration fill (6), fixed bearing plate (62) that are used for bearing filtration fill (6) that are provided with on outer tube (31), the top surface level of filtration fill (6) is not higher than the diapire level of french drain (5) when filtration fill (6) and bearing plate (62) butt.

5. A foundation pit dewatering and drainage structure as claimed in claim 4, wherein: and a filter cloth (63) is laid on the top surface of the filter hopper (6), and a gravel layer (64) is fixedly arranged on the top surface of the filter cloth (63).

6. A foundation pit dewatering and drainage structure as claimed in claim 5, wherein: and a guide pipe (65) for the water pumping pipe (12) to pass through is arranged on the side wall of the filter hopper (6).

7. A foundation pit dewatering and drainage structure as claimed in claim 1, wherein: the lateral wall upper berth of sump pit (2) is equipped with brick layer (7) of permeating water, it is provided with window (71) on the lateral wall of brick layer (7) to permeate water, window (71) are provided with a plurality ofly along the circumference of sump pit (2), radially being provided with along sump pit (2) in window (71) and inserting aqueduct (72) in the earth, open-ended inlet opening (73) have been seted up on the outer wall of aqueduct (72), the length direction interval of inlet opening (73) along aqueduct (72) is provided with a plurality ofly.

8. A foundation pit dewatering and drainage structure as claimed in claim 7, wherein: one end of the water guide pipe (72) extending into the water collecting well (2) is coated with non-woven fabrics (74).