CN113789799B

CN113789799B - Drainage decompression anti-floating control device for large underground structure

Info

Publication number: CN113789799B
Application number: CN202110678794.7A
Authority: CN
Inventors: 王铁; 陆聪; 王浩杰; 沈林超; 朱佳超
Original assignee: Zhejiang Hongxiang Construction Group Co ltd
Current assignee: Zhejiang Hongxiang Construction Group Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-09-06
Anticipated expiration: 2041-06-18
Also published as: CN113789799A

Abstract

The invention provides a large underground structure drainage pressure reduction anti-floating control device. The large underground structure drainage, pressure reduction and anti-floating control device comprises a basement; a water collecting well; the side wall of the second filter screen is provided with the geotextile, and the geotextile abuts against the fine sand layer; the drainage mechanism is arranged inside the water collecting well; the cleaning mechanism comprises a connecting pipe, a fixing ring, a partition plate, a suction pipe, a flushing pipe, a bump, a spray head and a connecting ring; the bottom end of the fixing ring is provided with the suction pipe and the flushing pipe, the suction pipe is connected with the geotextile, the second filter screen and the side wall of the fixing plate in a sliding manner, and the flushing pipe is connected between the first filter screen and the second filter screen in a sliding manner; an adjustment mechanism; a sealing mechanism; a drive mechanism; a blocking mechanism. The large underground structure drainage pressure-reducing anti-floating control device provided by the invention has the advantages of being convenient for cleaning fine particles in geotextile and accelerating drainage efficiency.

Description

Large-scale underground structure drainage decompression anti-floating control device

Technical Field

The invention belongs to the technical field of construction pressure reduction and anti-floating, and particularly relates to a large underground structure drainage pressure reduction and anti-floating control device.

Background

With the rapid development of economy and the acceleration of urbanization process, the comprehensive development and utilization of urban underground space become a common choice for the development of cities in the world, and large underground structures are continuously developed, the self-weight load of the upper structures of the large underground structure projects is generally small, and the anti-floating problem is particularly prominent in areas with abundant underground water.

In order to effectively reduce and eliminate the buoyancy effect of underground water on a building, a permanent drainage and anti-floating mode is often adopted, wherein the permanent drainage and anti-floating mode is that the water level of a base of a foundation is always kept below a preset standard by using permanent drainage and drainage measures, and the drainage and drainage measures mainly comprise that a inverted filter layer and a water accumulation blind pipe are placed below a floor, so that the underground water can intensively flow into a water collecting well and be pumped away collectively, and the original buoyancy is greatly reduced; however, with the use of geotextiles, fine particles in the soil body enter pores of the geotextile along with water flow and stay in the pores, and the more fine particles stay and the less water permeability of the geotextile is.

Therefore, it is necessary to provide a new drainage pressure reduction anti-floating control device for large underground structure to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a large underground structure drainage, pressure reduction and anti-floating control device which is convenient for cleaning fine particles in geotextile and can accelerate drainage efficiency.

In order to solve the technical problem, the invention provides a large underground structure drainage water pressure reduction anti-floating control device, which comprises: a basement; the water collecting well is mounted at the bottom end of the basement; the filter comprises a reverse filtering mechanism, a first filter screen, a second filter screen and a fixing plate, wherein the reverse filtering mechanism comprises a steel wire mesh, a gravel layer, a fine sand layer, geotextile, a first filter screen, a second filter screen and the fixing plate; the first filter screen and the second filter screen are arranged between the gravel layer and the fine sand layer, and the fixing plates are respectively arranged on the side walls of the first filter screen and the second filter screen at equal intervals; the geotextile is arranged on the side wall of the second filter screen, two ends of the geotextile are respectively and fixedly connected with the side wall of the fixing plate, and the geotextile is abutted against the fine sand layer; the drainage mechanism is arranged inside the water collecting well; the cleaning mechanism comprises a connecting pipe, a fixing ring, a partition plate, a suction pipe, a flushing pipe, a bump, a spray head and a connecting ring, the fixing ring is rotatably connected with the inside of the water collecting well, and the partition plate is installed inside the fixing ring; the top end of the fixing ring is symmetrically and rotatably connected with the connecting ring, and the side wall of the connecting ring is fixedly connected with the connecting pipe; the bottom end of the fixing ring is provided with the suction pipe and the flushing pipe, the suction pipe is connected with the geotextile, the second filter screen and the side wall of the fixing plate in a sliding manner, and the flushing pipe is connected between the first filter screen and the second filter screen in a sliding manner; the spray head and the lug are respectively arranged at two ends of the flushing pipe, the spray head is connected with the side wall of the fixing plate in a sliding manner, and the lug is connected with the first filter screen and the side wall of the fixing plate in a sliding manner; the adjusting mechanism is rotatably connected with the inside of the fine sand layer; the sealing mechanism is in threaded connection with the adjusting mechanism and abuts against the top surface of the fine sand layer; the driving mechanism is connected with the adjusting mechanism and the fixing ring; and the blocking mechanism is arranged inside the bottom end of the adjusting mechanism.

Preferably, the drainage mechanism comprises a drainage pipe, a water pump and a fixed funnel; a water pump is arranged in the basement and is connected with the drain pipe and the connecting pipe; the inside installation of sump pit the drain pipe with fixed funnel, just fixed funnel install in the bottom of drain pipe.

Preferably, the adjusting mechanism comprises a fixed pipe, a fixed shaft, a blade, an extrusion block, a filter cylinder, a support rod and a support ring, the support ring is installed inside the bottom end of the water collecting well, and the fixed pipe is installed on the side wall of the support ring in an inclined manner; the inner part of the support ring is connected with the fixed shaft in an equidistant rotating manner, the side wall of the fixed shaft is provided with the spiral blade, and the blade and the fixed shaft are connected with the inner part of the fine sand layer in a rotating manner; the side wall of the fixed shaft is obliquely and symmetrically provided with the arc-shaped supporting rods, the top ends of the supporting rods are provided with the filter cylinders, and the two ends of each filter cylinder are respectively provided with the extrusion blocks.

Preferably, the squeezing block is of a spherical structure, the diameter of the squeezing block is larger than that of the filter cartridge, and the filter cartridge and the squeezing block are slidably connected with the inside of the fine sand layer.

Preferably, the closing mechanism comprises a piston, a screw rod and a slide rod, the slide rod is mounted at the top end of the fixed shaft, the screw rod is mounted on the side wall of the slide rod, and the side wall of the screw rod is in threaded connection with the piston; the inside sliding connection of piston the slide bar, piston sliding connection the inside of sump pit, just the piston contradicts the top surface of fine sand layer.

Preferably, the driving mechanism comprises a first gear, a second gear, a toothed plate, a variable frequency motor and a third gear, the variable frequency motor and the second gear are mounted inside the top end of the water collecting well, and the variable frequency motor is connected with the third gear; the toothed plates are equidistantly mounted on the side wall of the fixing ring; the second gear and the first gear are rotatably connected with the inside of the water collecting well, the second gear is meshed with the toothed plate and the first gear, the first gear is mounted at the top end of the sliding rod, and the diameter of the first gear is smaller than that of the second gear.

Preferably, the blocking mechanism comprises a floating ball and a limiting rod, the limiting rod is installed inside the support ring, the side wall of the limiting rod is connected with the floating ball in a sliding mode, and the floating ball is clamped inside the bottom end of the fixing shaft.

Preferably, the section of the suction pipe is in a U-shaped structure, the side walls of the suction pipe and the flushing pipe are in arc structures, and the widths of the suction pipe and the flushing pipe are smaller than the width of the fixing plate.

Compared with the related art, the large underground structure drainage decompression anti-floating control device provided by the invention has the following beneficial effects:

the invention provides a large underground structure drainage, pressure reduction and anti-floating control device, wherein in the using process, water in a soil body sequentially penetrates through a fine sand layer, geotechnical cloth and a gravel layer to enter the inside of a water collecting well, and a drainage mechanism is used for pumping accumulated water out of the inside of the water collecting well; reducing the efficiency of water penetrating through the geotextile after the fine particles block most of the geotextile; opening the driving mechanism, driving the adjusting mechanism to rotate inside the fine sand layer, simultaneously pushing the sealing mechanism to separate from the fine sand layer by the adjusting mechanism, driving the fine sand to continuously move upwards by the adjusting mechanism, loosening the fine sand layer, driving the fixing ring to rotate by the driving mechanism, driving the suction pipe and the flushing pipe to rotate by the fixing ring, loosening the fine sand layer, and facilitating the suction pipe to rotate inside the fine sand layer; the side walls of the two ends of the suction pipe are arc-shaped structures, so that the resistance of the suction pipe in the movement of the fine sand layer is reduced, the suction pipe can conveniently move along the side wall of the geotextile, the suction pipe can push away the fine sand on the side wall of the geotextile, and the water can rapidly move downwards in the flushing pipe, so that the water can be sprayed out through the spray heads on the side wall of the flushing pipe, and the water can penetrate through the geotextile and enter the fine sand layer to perform backflushing on the geotextile; the nozzle is aligned with the suction pipe with the U-shaped section, the contact area between the suction pipe and the geotextile is increased, water flushed from the geotextile is enabled to continuously enter the inside of the suction pipe along with fine sand in the geotextile, the suction pipe is connected with the water pump, the water pump enables the inside of the suction pipe to generate suction force, the water and the fine sand move upwards in the suction pipe and enter the inside of the fixing ring, the partition plate separates the suction pipe from the flushing pipe, the water is convenient to move in the fixing ring through one connecting pipe and enter the inside of the flushing pipe, and the water and the fine sand in the suction pipe move in the fixing ring and enter the inside of the other connecting pipe; with the continuous rotation of the fixing ring, the suction pipe and the flushing pipe, water continuously penetrates through the second filter screen to flush the geotextile, and fine sand in the geotextile is flushed; when the geotechnique's cloth washes clean back, solid fixed ring antiport makes the suction tube with the shower nozzle is hugged closely the lateral wall of fixed plate makes the fixed plate will the suction tube with the shower nozzle seals, prevents that fine sand from getting into the suction tube with the inside of shower nozzle is blockked up it.

Drawings

FIG. 1 is a schematic structural diagram of a large underground structure drainage water pressure reduction anti-floating control device provided by the invention;

FIG. 2 is an enlarged view of the structure at A shown in FIG. 1;

FIG. 3 is an enlarged view of the structure shown at B in FIG. 2;

fig. 4 is a top view of the inner structure of the sump well shown in fig. 1;

FIG. 5 is an enlarged view of the structure shown in FIG. 4 at D;

FIG. 6 is a top view of the internal structure of the fine sand layer shown in FIG. 2;

FIG. 7 is an enlarged view of the structure shown at E in FIG. 5;

fig. 8 is an enlarged view of the structure at C shown in fig. 2.

Reference numbers in the figures: 1. the water collecting well comprises a water collecting well, 2, a basement, 3, a drainage mechanism, 31, a drainage pipe, 32, a water pump, 33, a fixed funnel, 4, a reverse filtering mechanism, 41, a steel wire mesh, 42, a gravel layer, 43, a fine sand layer, 44, geotextile, 45, a first filter screen, 46, a second filter screen, 47, a fixed plate, 5, a cleaning mechanism, 51, a connecting pipe, 52, a fixed ring, 53, a partition plate, 54, a suction pipe, 55, a flushing pipe, 56, a bump, 57, a nozzle, 58, a connecting ring, 6, an adjusting mechanism, 61, a fixed pipe, 62, a fixed shaft, 63, a blade, 64, an extrusion block, 65, a filter cartridge, 66, a support rod, 67, a support ring, 7, a sealing mechanism, 71, a piston, 72, a screw rod, 73, a slide rod, 8, a driving mechanism, 81, a first gear, 82, a second gear, 83, a toothed plate, 84, a variable frequency motor, 85, a third gear, 9, a blocking mechanism, 91 and a water outlet, and a water outlet, Floater, 92, gag lever post.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8 in combination, wherein fig. 1 is a schematic structural diagram of a drainage, pressure reduction and anti-floating control device for a large underground structure according to the present invention; FIG. 2 is an enlarged view of the structure at A shown in FIG. 1; FIG. 3 is an enlarged view of the structure at B in FIG. 2;

FIG. 4 is a top view of the interior structure of the sump well shown in FIG. 1; FIG. 5 is an enlarged view of the structure shown in FIG. 4 at D; FIG. 6 is a top view of the internal structure of the fine sand layer shown in FIG. 2; FIG. 7 is an enlarged view of the structure shown at E in FIG. 5; fig. 8 is an enlarged view of the structure at C shown in fig. 2. Large-scale underground structure drainage decompression anti-floating control device includes: a basement 2; the water collecting well 1 is mounted at the bottom end of the basement 2; the reverse filtering mechanism 4 comprises a steel wire mesh 41, a gravel layer 42, a fine sand layer 43, geotextile 44, a first filter screen 45, a second filter screen 46 and a fixing plate 47, the fine sand layer 43 and the gravel layer 42 are sequentially paved in the water collecting well 1, and the steel wire mesh 41 is installed on the side wall of the gravel layer 42; the first filter screen 45 and the second filter screen 46 are arranged between the gravel layer 42 and the fine sand layer 43, and the fixing plates 47 are respectively arranged on the side walls of the first filter screen 45 and the second filter screen 46 at equal intervals; the geotextile 44 is installed on the side wall of the second filter screen 46, two ends of the geotextile 44 are respectively and fixedly connected with the side wall of the fixing plate 47, and the geotextile 44 abuts against the fine sand layer 43; the drainage mechanism 3 is arranged in the water collecting well 1; the cleaning mechanism 5 comprises a connecting pipe 51, a fixed ring 52, a partition plate 53, a suction pipe 54, a flushing pipe 55, a bump 56, a spray head 57 and a connecting ring 58, the fixed ring 52 is rotatably connected to the inside of the sump 1, and the partition plate 53 is mounted inside the fixed ring 52; the top end of the fixed ring 52 is symmetrically and rotatably connected with the connecting ring 58, and the side wall of the connecting ring 58 is fixedly connected with the connecting pipe 51; the bottom end of the fixing ring 52 is provided with the suction pipe 54 and the flushing pipe 55, the suction pipe 54 is slidably connected with the geotextile 44, the second filter screen 46 and the side wall of the fixing plate 47, and the flushing pipe 55 is slidably connected between the first filter screen 45 and the second filter screen 46; the spray head 57 and the projection 56 are respectively installed at two ends of the flushing pipe 55, the spray head 57 is slidably connected to the side wall of the fixing plate 47, and the projection 56 is slidably connected to the first filter screen 45 and the side wall of the fixing plate 47; the adjusting mechanism 6 is rotatably connected with the inside of the fine sand layer 43; the closing mechanism 7 is in threaded connection with the adjusting mechanism 6, and the closing mechanism 7 abuts against the top surface of the fine sand layer 43; a driving mechanism 8, wherein the driving mechanism 8 is connected with the adjusting mechanism 6 and the fixing ring 52; and the blocking mechanism 9, wherein the blocking mechanism 9 is installed inside the bottom end of the adjusting mechanism 6.

The drainage mechanism 3 comprises a drainage pipe 31, a water pump 32 and a fixed funnel 33; a water pump 32 is installed inside the basement 2, and the water pump 32 is connected with the water drainage pipe 31 and the connecting pipe 51; the internally mounted of sump well 1 drain pipe 31 with fixed funnel 33, just fixed funnel 33 install in the bottom of drain pipe 31, for convenient the water pump 32 functions, makes the inside suction that produces of drain pipe 31, it is convenient inside ponding and the impurity of sump well 1 pass through fixed funnel 33 with drain pipe 31 discharges, gets rid of the inside ponding of the soil body, and it is right to reduce groundwater the buoyancy of basement 2.

The adjusting mechanism 6 comprises a fixed pipe 61, a fixed shaft 62, a blade 63, an extrusion block 64, a filter cartridge 65, a support rod 66 and a support ring 67, wherein the support ring 67 is mounted inside the bottom end of the water collecting well 1, and the fixed pipe 61 is obliquely mounted on the side wall of the support ring 67; the inner part of the support ring 67 is connected with the fixed shaft 62 in an equidistant rotating way, the side wall of the fixed shaft 62 is provided with the spiral blade 63, and the blade 63 and the fixed shaft 62 are connected with the inner part of the fine sand layer 43 in a rotating way; the side wall of the fixed shaft 62 is obliquely and symmetrically provided with the arc-shaped support rod 66, the top end of the support rod 66 is provided with the filter cartridge 65, and two ends of the filter cartridge 65 are respectively provided with the squeezing block 64, so that when the geotextile 44 needs to be cleaned, the fixed shaft 62 rotates in the support ring 67, the fixed shaft 62 drives the spiral blade 63 to rotate in the fine sand layer 43, and the spiral blade 63 pushes the fine sand to move upwards, so that the compact fine sand layer 43 becomes soft, and the suction pipe 54 can conveniently move in the fine sand layer 43; after the geotextile 44 is cleaned, the fixed shaft 62 and the blade 63 rotate in opposite directions, so that the blade 63 drives the fine sand to move downwards, and the fine sand in the fine sand layer 43 is squeezed and changed tightly, so that the fine sand layer 43 is compacted; when the accumulated water in the soil body enters the gravel layer 43, part of the accumulated water in the gravel layer 43 enters the supporting rod 66 through the filter cylinder 65, so that the water penetrates through the fixing shaft 62, the supporting ring 67 and the fixing pipe 61 and enters the water collecting well 1, the hydraulic gradient in the gravel layer 43 is reduced, the probability that the accumulated water in the gravel layer 43 drives fine particles to contact the geotextile 44 is reduced, the service time of the geotextile 44 is prolonged, and the drainage efficiency is increased.

The extrusion block 64 is of a spherical configuration, and the filter cartridge 65 and the extrusion block 64 are slidably connected to the inside of the fine sand layer 43. When the fixing shaft 62 rotates inside the fine sand layer 43, the fixing shaft 62 drives the supporting rod 66, the filter cartridge 65 and the squeezing block 65 to rotate inside the fine sand layer 43, the squeezing block 65 is spherical, the side wall of the supporting rod 66 is arc-shaped, the squeezing force between the squeezing block 65 and the supporting rod 66 and the fine sand is reduced, the diameter of the squeezing block 64 is larger than that of the filter cartridge 65, the squeezing block 64 firstly discharges the fine sand, the squeezing block 64 protects the filter cartridge 65, and the probability that the filter cartridge 65 is blocked by the fine sand is reduced.

The closing mechanism 7 comprises a piston 71, a screw 72 and a sliding rod 73, the sliding rod 73 is mounted at the top end of the fixed shaft 62, the screw 72 is mounted on the side wall of the sliding rod 73, and the side wall of the screw 72 is in threaded connection with the piston 71; the inner part of the piston 71 is slidably connected with the sliding rod 73, the piston 71 is slidably connected with the inner part of the water collecting well 1, and the piston 71 abuts against the top surface of the fine sand layer 43, in order that when the fixed shaft 62 and the blade 63 rotate to drive the fine sand in the fine sand layer 43 to move upwards, the first gear 81 drives the sliding rod 73 and the screw 72 to rotate, the screw 72 is in threaded connection with the piston 71, and by using the principle of turbine screw, the screw 72 pushes the piston 71 to move upwards along the screw 72, so that the piston 71 moves to the connection part of the sliding rod 73 and the screw 72, and the screw 72 continues to rotate, so that the piston 71 is fixed at the connection part of the sliding rod 73 and the screw 72, and the fine sand layer 43 is convenient to loosen; and when geotechnical cloth 44 clears up the back, screw rod 72 with slide bar 73 antiport, the inside internal thread of piston 71 with the external screw thread contact of screw rod 72 lateral wall, along with screw rod 72's rotation makes piston 71 along the inside downstream extrusion of screw rod 72 thin sand bed 43, will the top of thin sand bed 43 compresses tightly, and prevents that the inside ponding of the soil body from following the top of thin sand bed 43 is discharged.

The driving mechanism 8 comprises a first gear 81, a second gear 82, a toothed plate 83, a variable frequency motor 84 and a third gear 85, the variable frequency motor 84 and the second gear 82 are mounted inside the top end of the water collecting well 1, and the variable frequency motor 84 is connected with the third gear 85; the side wall of the fixing ring 52 is equidistantly provided with the toothed plates 83; the second gear 82 and the first gear 81 are rotatably connected to the inside of the sump 1, the second gear 82 is engaged with the tooth plate 83 and the first gear 81, the first gear 81 is installed at the top end of the slide rod 73, in order to facilitate the operation of the variable frequency motor 84, the third gear 85 is driven to rotate, the third gear 85 pushes the toothed plate 83 and the fixed ring 52 to rotate, and the gear 83 pushes the second gear 82 to rotate, the second gear 82 pushes the first gear 81 and the sliding rod 73 and the fixed shaft 62 to rotate, and the diameter of the first gear 81 is smaller than that of the second gear 82, so that the rotating speed of the first gear 81 is greater than that of the second gear 82 when the second gear 82 pushes the first gear 81, and the rotating speed of the fixed shaft 62 in the fine sand layer 43 is increased.

Stop gear 9 includes floater 91 and gag lever post 92, the internally mounted of support ring 67 gag lever post 92, gag lever post 92's lateral wall sliding connection floater 91, just floater 91 block inside the bottom of fixed axle 62, in order to work as the inside ponding of sump pit 1 is too much to flow backwards through the dead lever 61 gets into the inside of support ring 67, water promotes the floater 91 along the inside upward movement of gag lever post 92 makes floater 91 upward movement will the bottom of fixed axle 62 is sealed, prevents the inside ponding refluence of sump pit 1 from getting into the inside of fixed axle 62.

The section of the suction pipe 54 is of a U-shaped structure, so that water and fine particles penetrating through the geotextile 44 can conveniently enter the suction pipe 54, and the side walls of the suction pipe 54 and the flushing pipe 55 are of arc structures; the widths of the suction pipe 54 and the flushing pipe 55 are smaller than the width of the fixing plate 47, and the partition plate 53 is located between the suction pipe 54 and the flushing pipe 55 to facilitate the fixing plate 47 to close the spray head 57 and the suction pipe 54 and prevent fine sand from entering the interior of the spray head 57 and the suction pipe 54.

The working principle of the large underground structure drainage decompression anti-floating control device provided by the invention is as follows: in the using process, moisture in the soil body sequentially penetrates through the fine sand layer 43, the geotextile 44 and the gravel layer 42 and enters the inside of the water collecting well 1, when water enters the inside of the sand layer 43, part of accumulated water in the sand layer 43 enters the inside of the supporting rod 66 through the filter cylinder 65, so that the water penetrates through the fixing shaft 62, the supporting ring 67 and the fixing pipe 61 and enters the inside of the water collecting well 1, the hydraulic gradient in the sand layer 43 is reduced, the probability that the accumulated water in the sand layer 43 drives fine particles to contact with the geotextile 44 is reduced, the service time of the geotextile 44 is prolonged, and the drainage efficiency is improved. When 1 inside ponding of sump pit is too much, will water pump 32 external power source opens water pump 32, water pump 32 functions, makes 31 inside productions suction of drain pipe, 1 inside ponding of sump pit and impurity pass through fixed funnel 33 with 31 discharges of drain pipe get rid of the inside ponding of the soil body, it is right to reduce groundwater the buoyancy of basement 2. When the geotextile 44 is cleaned, the variable frequency motor 84 is externally connected with a power supply, the connecting pipe 51 communicated with the flushing pipe 55 is communicated with a water source, the connecting pipe 51 is communicated with the suction pipe 54 and is connected with the water pump 32, the water pump 32 and the variable frequency motor 84 operate to drive the third gear 85 to rotate, the third gear 85 pushes the toothed plate 83 and the fixed ring 52 to rotate, and the gear 83 pushes the second gear 82 to rotate, the second gear 82 pushes the first gear 81 and the sliding rod 73 and the fixed shaft 62 to rotate, and the diameter of the first gear 81 is smaller than that of the second gear 82, so that the rotating speed of the first gear 81 is greater than that of the second gear 82 when the second gear 82 pushes the first gear 81, and the rotating speed of the fixed shaft 62 in the fine sand layer 43 is increased. The first gear 81 drives the sliding rod 73, the screw rod 72 and the fixed shaft 62 to rotate, the screw rod 72 and the piston 71 are in threaded connection, the screw rod 72 pushes the piston 71 to move upwards along the screw rod 72 by using the principle of a worm gear screw rod, so that the piston 71 moves to the joint of the sliding rod 73 and the screw rod 72, the screw rod 72 continues to rotate, the piston 71 is fixed at the joint of the sliding rod 73 and the screw rod 72, the fixed shaft 62 rotates inside the support ring 67, the fixed shaft 62 drives the spiral blade 63 to rotate inside the fine sand layer 43, and the spiral blade 63 pushes the fine sand to move upwards, so that the tight fine sand layer 43 becomes soft, and the suction pipe 54 is convenient to move inside the fine sand layer 43; the side walls of the two ends of the suction pipe 54 are arc-shaped structures, the suction pipe 54 moves along the side wall of the geotextile 44, so that the suction pipe 54 pushes away the fine sand on the side wall of the geotextile 44, and the wash pipe 55 rotates between the first sieve 45 and the second sieve 46, the first filter screen 45 and the second filter screen 46 separate the flushing pipe 55 from the gravel layer 42 and the fine sand layer 43, so that the flushing pipe 55 can rotate conveniently, but the hemispherical convex blocks 56 on the side wall of the flushing pipe 55 slide along the side wall of the first filter screen 55, so that the stability of the rotation of the flushing pipe 55 is improved, at the moment, water moves downwards rapidly in the flushing pipe 55, the water is sprayed out through the spray heads 57 on the side wall of the flushing pipe 55, the water penetrates through the geotextile 44 and enters the fine sand layer 43, and the geotextile 44 is backflushed; the nozzle 57 is aligned with the suction pipe 54 having a U-shaped cross section to increase a contact area between the suction pipe 54 and the geotextile 44, so that water flushed from the geotextile 44 continuously enters the interior of the suction pipe 54 along with fine sand in the geotextile 44, the suction pipe 54 is connected to the water pump 32, and the water pump 32 generates suction force in the interior of the suction pipe 54, so that the water and the fine sand move upward in the interior of the suction pipe 54 and enter the interior of the fixing ring 52. When the geotextile 44 is cleaned up, the variable frequency motor 84 drives the third gear 85 to rotate reversely, so that the fixing ring 52, the screw 72, the fixing shaft 62 and the blade 63 rotate reversely, the blade 63 drives the fine sand to move downwards, the fine sand in the fine sand layer 43 is pressed and changed tightly, so that the fine sand layer 43 becomes dense, the screw 72 and the slide rod 73 rotate reversely, the internal thread in the piston 71 is contacted with the external thread on the side wall of the screw 72, and along with the rotation of the screw 72, the piston 71 moves downwards along the inside of the screw 72 to press the fine sand layer 43, and the top end of the fine sand layer 43 is pressed continuously. When the suction pipe 54 and the flushing pipe 55 rotate to be aligned with the fixing plate 47, the suction pipe 54, the spray head 57 and the side wall structure of the fixing plate 47 stop the operation of the variable frequency motor 84, so that the fixing plate 47 completely seals the spray head 57 and the suction pipe 54, and fine sand is prevented from entering the spray head 57 and the suction pipe 54.

the invention provides a large-scale underground structure drainage decompression anti-floating control device, in the using process, the moisture in the soil body sequentially penetrates through the fine sand layer 43, the geotextile 44 and the rubble layer 42 and enters the inside of the water collecting well 1, and the drainage mechanism 3 pumps the accumulated water out of the inside of the water collecting well 1; after the fine particles have clogged up most of the geotextile 44, reducing the efficiency of water penetration through the geotextile 44; opening the driving mechanism 8, the driving mechanism 8 driving the adjusting mechanism 6 to rotate inside the fine sand layer 43, meanwhile, the adjusting mechanism 6 pushing the closing mechanism 7 to separate from the fine sand layer 43, the adjusting mechanism 8 driving the fine sand to move upward continuously, so that the fine sand layer 43 becomes loose, and the driving mechanism 8 driving the fixing ring 52 to rotate, the fixing ring 52 driving the suction pipe 54 and the flushing pipe 55 to rotate, the fine sand layer 43 becoming loose, so that the suction pipe 54 can rotate inside the fine sand layer 43 conveniently; the side walls of the two ends of the suction pipe 54 are arc-shaped structures, so that the resistance of the suction pipe 54 to the movement of the fine sand layer 43 is reduced, the suction pipe 54 can conveniently move along the side wall of the geotextile 44, the suction pipe 54 can push away the fine sand on the side wall of the geotextile 44, and at the moment, water quickly moves downwards in the flushing pipe 55, so that the water is sprayed out through the spray heads 57 on the side wall of the flushing pipe 55, and the water penetrates through the geotextile 44 to enter the fine sand layer 43 to perform backflushing on the geotextile 44; the spray head 57 is aligned with the suction pipe 54 with the cross section being "U" shape, so as to increase the contact area between the suction pipe 54 and the geotextile 44, so that the water flushed from the geotextile 44 is carried by the fine sand in the geotextile 44 and continuously enters the inside of the suction pipe 54, the suction pipe 54 is connected with the water pump 32, the water pump 32 generates suction force inside the suction pipe 54, so that the water and the fine sand move upwards inside the suction pipe 54 and enter the inside of the fixing ring 52, the partition plate 53 separates the suction pipe 54 from the flushing pipe 55, so as to facilitate the water to move inside the fixing ring 52 through one connecting pipe 51 and enter the inside of the flushing pipe 55, and the water and the fine sand inside the suction pipe 54 move inside the fixing ring 52 and enter the inside of the other connecting pipe 51; with the continuous rotation of the fixing ring 52, the suction pipe 54 and the flushing pipe 55, water continuously penetrates through the second filter screen 46 to flush the geotextile 44, so as to flush the fine sand inside the geotextile 44; after the geotextile 44 is washed clean, the fixing ring 52 rotates reversely, so that the suction pipe 54 and the spray head 57 are tightly attached to the side wall of the fixing plate 47, the fixing plate 47 seals the suction pipe 54 and the spray head 57, and fine sand is prevented from entering the suction pipe 54 and the spray head 57 to block the suction pipe 54 and the spray head 57.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a large-scale underground structure drainage decompression anti-floating control device which characterized in that includes:

a basement (2);

the water collecting well (1), the water collecting well (1) is installed at the bottom end of the basement (2);

the reverse filtering mechanism (4) comprises a steel wire mesh (41), a gravel layer (42), a fine sand layer (43), geotextile (44), a first filter screen (45), a second filter screen (46) and a fixing plate (47), the fine sand layer (43) and the gravel layer (42) are sequentially laid in the water collecting well (1), and the steel wire mesh (41) is installed on the side wall of the gravel layer (42); the first filter screen (45) and the second filter screen (46) are arranged between the gravel layer (42) and the fine sand layer (43), and the fixing plates (47) are respectively arranged on the side walls of the first filter screen (45) and the second filter screen (46) at equal intervals; the geotextile (44) is arranged on the side wall of the second filter screen (46), two ends of the geotextile (44) are respectively and fixedly connected with the side wall of the fixing plate (47), and the geotextile (44) props against the fine sand layer (43);

the drainage mechanism (3), the drainage mechanism (3) is installed inside the water collecting well (1);

the cleaning mechanism (5) comprises a connecting pipe (51), a fixing ring (52), a partition plate (53), a suction pipe (54), a flushing pipe (55), a bump (56), a spray head (57) and a connecting ring (58), the fixing ring (52) is rotatably connected to the inside of the sump (1), and the partition plate (53) is installed inside the fixing ring (52); the top end of the fixed ring (52) is symmetrically and rotatably connected with the connecting ring (58), and the side wall of the connecting ring (58) is fixedly connected with the connecting pipe (51); the bottom end of the fixing ring (52) is provided with the suction pipe (54) and the flushing pipe (55), the suction pipe (54) is connected with the geotextile (44), the second filter screen (46) and the side wall of the fixing plate (47) in a sliding manner, and the flushing pipe (55) is connected between the first filter screen (45) and the second filter screen (46) in a sliding manner; the spray head (57) and the projection (56) are respectively installed at two ends of the flushing pipe (55), the spray head (57) is slidably connected with the side wall of the fixing plate (47), and the projection (56) is slidably connected with the first filter screen (45) and the side wall of the fixing plate (47);

the adjusting mechanism (6) is rotatably connected with the inside of the fine sand layer (43); the adjusting mechanism (6) comprises a fixed pipe (61), a fixed shaft (62), a blade (63), an extrusion block (64), a filter cartridge (65), a support rod (66) and a support ring (67), the support ring (67) is installed inside the bottom end of the water collecting well (1), and the fixed pipe (61) is installed on the side wall of the support ring (67) in an inclined mode; the inner part of the support ring (67) is connected with the fixed shaft (62) in an equidistant rotating way, the side wall of the fixed shaft (62) is provided with the spiral blade (63), and the blade (63) and the fixed shaft (62) are connected with the inner part of the fine sand layer (43) in a rotating way; the side wall of the fixed shaft (62) is obliquely and symmetrically provided with the support rods (66) with arc-shaped side walls, the top ends of the support rods (66) are provided with the filter cartridges (65), and two ends of each filter cartridge (65) are respectively provided with the extrusion blocks (64);

the sealing mechanism (7) is in threaded connection with the adjusting mechanism (6), and the sealing mechanism (7) abuts against the top surface of the fine sand layer (43); the sealing mechanism (7) comprises a piston (71), a screw rod (72) and a sliding rod (73), the sliding rod (73) is installed at the top end of the fixed shaft (62), the screw rod (72) is installed on the side wall of the sliding rod (73), and the side wall of the screw rod (72) is in threaded connection with the piston (71); the inner part of the piston (71) is slidably connected with the sliding rod (73), the piston (71) is slidably connected with the inner part of the water collecting well (1), and the piston (71) is abutted against the top surface of the fine sand layer (43);

a drive mechanism (8), the drive mechanism (8) connecting the adjustment mechanism (6) and the fixed ring (52); the driving mechanism (8) comprises a first gear (81), a second gear (82), a toothed plate (83), a variable frequency motor (84) and a third gear (85), the variable frequency motor (84) and the second gear (82) are installed inside the top end of the water collecting well (1), and the variable frequency motor (84) is connected with the third gear (85); the side wall of the fixing ring (52) is equidistantly provided with the toothed plate (83); the second gear (82) and the first gear (81) are rotatably connected with the inside of the water collecting well (1), the second gear (82) is meshed with the toothed plate (83) and the first gear (81), the first gear (81) is installed at the top end of the sliding rod (73), and the diameter of the first gear (81) is smaller than that of the second gear (82);

the blocking mechanism (9), the blocking mechanism (9) is installed inside the bottom end of the adjusting mechanism (6).

2. A large underground structure drainage, pressure reduction and anti-floating control device according to claim 1, characterized in that the drainage mechanism (3) comprises a drainage pipe (31), a water pump (32) and a fixed funnel (33); a water pump (32) is arranged in the basement (2), and the water pump (32) is connected with the drain pipe (31) and the connecting pipe (51); the inside installation of sump pit (1) drain pipe (31) with fixed funnel (33), just fixed funnel (33) install in the bottom of drain pipe (31).

3. A large underground structure drainage, pressure reduction and anti-floating control device according to claim 2, characterized in that the squeeze block (64) is a spherical structure, the diameter of the squeeze block (64) is larger than that of the filter cartridge (65), and the filter cartridge (65) and the squeeze block (64) are slidably connected with the inside of the fine sand layer (43).

4. The large underground structure drainage, pressure reduction and anti-floating control device according to claim 1, wherein the blocking mechanism (9) comprises a floating ball (91) and a limiting rod (92), the limiting rod (92) is installed inside the support ring (67), the side wall of the limiting rod (92) is slidably connected with the floating ball (91), and the floating ball (91) is clamped inside the bottom end of the fixed shaft (62).

5. The large underground structure water drainage, pressure reduction and anti-floating control device according to claim 1, wherein the cross section of the suction pipe (54) is a U-shaped structure, and the side walls of the suction pipe (54) and the flushing pipe (55) are arc structures; the width of the suction pipe (54) and the width of the flushing pipe (55) are smaller than the width of the fixing plate (47), and the partition plate (53) is positioned between the suction pipe (54) and the flushing pipe (55).