CN210621730U - Precipitation well structure and automatic precipitation water level monitoring device of foundation pit - Google Patents
Precipitation well structure and automatic precipitation water level monitoring device of foundation pit Download PDFInfo
- Publication number
- CN210621730U CN210621730U CN201921309860.8U CN201921309860U CN210621730U CN 210621730 U CN210621730 U CN 210621730U CN 201921309860 U CN201921309860 U CN 201921309860U CN 210621730 U CN210621730 U CN 210621730U
- Authority
- CN
- China
- Prior art keywords
- filter screen
- sand
- filter
- precipitation
- water level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a precipitation well structure and a foundation pit automatic precipitation water level monitoring device, wherein the precipitation well structure comprises a well body and a sand-free pipe which is arranged along the depth direction of the well body and is provided with a plurality of water permeable holes, and a filter layer is arranged between the sand-free pipe and the side wall of the well body; the floating type sand-free pipeline filter is characterized by further comprising a submersible pump suspended at the bottom of the sand-free pipeline, a filtering mechanism is arranged in the sand-free pipeline below the submersible pump, and the filtering mechanism is provided with a filter screen capable of ascending or descending due to the change of buoyancy. Precipitation well structure, through set up the hole of permeating water on no sand pipe, and then can guarantee that groundwater is arranged no sand pipe via the hole of permeating water, and through setting up filter layer and filter screen, and then can filter the water of well body lateral wall and diapire, and set up the filter screen into the liftable because of the buoyancy change that receives, and then can make the part attached to the impurity on the filter screen drop because of inertial action in sliding repeatedly.
Description
Technical Field
The utility model relates to a foundation ditch precipitation construction field technical field, in particular to precipitation well structure. The utility model discloses still relate to an automatic precipitation water level monitoring devices of foundation ditch that is applied to this precipitation well structure.
Background
Along with the rising of public facilities such as underground pipelines and the like of high-rise buildings and road bridges and culverts and the new construction of a plurality of large-city subway projects, foundation pit engineering is continuously developed, and during foundation pit excavation, underground water level is higher than the excavation bottom surface, and underground water can continuously permeate into pits, so that the foundation pit can be constructed under a dry condition, the problems of slope instability, basic quicksand, pit bottom uplift and the like are prevented, and foundation pit dewatering operation is required.
The foundation pit dewatering generally needs drilling a dewatering well, after the foundation pit is excavated, because a permeable layer is cut off, underground water can continuously seep into the dewatering well, in the seepage process, the underground water carries a large amount of impurities and silt, the filtering performance of a filtering system in the existing dewatering well is poor, the submersible pump is often blocked, the dewatering process is influenced, meanwhile, in the foundation pit dewatering, the water level needs to be controlled within a certain range, if the dewatering is too slow, the underground water level is too high, the bottom and the pit wall of the foundation pit can be soaked, the strength of the foundation pit is reduced, the damage such as slope instability and quicksand can be caused to the foundation pit excavated by slope placement, a maintenance structure foundation pit is used for vertical excavation, the strength and the rigidity of soil body in an inner passive area can be reduced, and the strength, the deformation and the stability of a; if precipitation is too fast, groundwater level crosses lowly, can lead to ground and building around the foundation ditch to subside too fast, causes destruction to peripheral building, and precipitation too fast simultaneously can make the foundation ditch inside and outside produce great flood peak poor, and infiltration volumetric capacity can lead to the fact certain negative effect to the stability of foundation ditch retaining structure this moment. After the water level is lower than the water suction port of the submersible pump in the dewatering well, the submersible pump is possibly burnt dry, and dewatering operation is influenced. Therefore, the foundation pit water level is monitored, the precipitation speed is adjusted in real time, and the foundation pit structure safety is particularly important, but at present, the foundation pit water level monitoring is mainly carried out manually, after the manual monitoring data is extracted and analyzed, the precipitation speed is adjusted, and the defects of low monitoring efficiency, untimely feedback, poor reliability and the like exist.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a dewatering well structure, which can filter the groundwater and has a better effect.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a dewatering well structure comprises a well body and a sand-free pipe which is arranged along the depth direction of the well body and is provided with a plurality of water permeable holes, wherein a filter layer is arranged between the sand-free pipe and the side wall of the well body; the floating type sand-free pipeline filter is characterized by further comprising a submersible pump suspended at the bottom of the sand-free pipeline, a filter mechanism is arranged in the sand-free pipeline below the submersible pump, and the filter mechanism is provided with a filter screen capable of ascending or descending due to the change of buoyancy.
Furthermore, the filtering mechanism further comprises two guide frames fixedly arranged on the inner wall of the sand-free pipe, and the filter screen is arranged between the two guide frames in a sliding manner and can be lifted.
Further, the filter screen includes the edge no sand pipe direction of height interval sets up first filter screen and second filter screen, the second filter screen is located the below of first filter screen, just but because of being provided with the connecting rod and go up and down in step between first filter screen and the second filter screen.
Further, the mesh diameter of the second filter is larger than that of the first filter.
Furthermore, a buoyancy block is fixed on the second filter screen, and a spring is arranged between the second filter screen and one of the guide frame bottom walls.
Further, the leading truck includes roof and the bottom plate of following direction of height interval arrangement, and locates arc between roof and the bottom plate, the bottom of spring links firmly on the bottom plate, the filter screen slip clamp is arranged in between two arcs.
Furthermore, the filter layer comprises a geotextile filter layer and a coarse sand layer which are sequentially arranged from the sand-free pipe to the outside.
Furthermore, the geotextile filter layers are two layers.
Compared with the prior art, the utility model discloses following advantage has:
(1) precipitation well structure, through set up the hole of permeating water on no sand pipe, and then can guarantee that groundwater is arranged to no sand pipe via the hole of permeating water, and through setting up filter layer and filter screen, and then can filter the water of well body lateral wall and diapire, reduce the influence of impurity to the immersible pump, and set up the filter screen into the buoyancy change liftable that receives because of receiving, and then can make the part drop owing to inertial action in sliding repeatedly, the jam of impurity to the filter screen has been slowed down when avoiding impurity to get into the immersible pump, good working property has been guaranteed, and service life is prolonged.
(2) The guide frame is arranged to ensure the sliding stability of the filter screen.
(3) Set up first filter screen and second filter screen simultaneously and can realize twice filtration, the filter effect is better.
(4) The aperture of the second filter screen is larger than that of the first filter screen, so that large particle impurities and small particle impurities can be sequentially filtered.
(5) The buoyancy block has good buoyancy, and is simple, reliable and convenient to design and manufacture.
(6) The leading truck is through setting up roof and bottom plate, can be convenient for arrange of spring on the one hand, and on the other hand can realize spacing to the filter screen lift.
(7) The geotextile filter layer and the coarse sand layer are adopted for filtering simultaneously, so that the water purification effect can be improved.
The utility model also provides an automatic precipitation water level monitoring devices of foundation ditch, it includes that a plurality of lays foundation ditch water level detection well all around and as above precipitation well to and the pressure liquid level transmitter that has display end and probe, affiliated display end is fixed in the top of water level detection well, the probe is located the water level monitoring well, pressure liquid level transmitter and HART manual operator intercommunication, still include with display end electric connection is steerable the controller that the immersible pump opened and shut.
The automatic precipitation water level monitoring device of foundation ditch, through setting up the water level monitoring well, and pressure liquid level transmitter, this pressure liquid level transmitter can predetermine high low water level threshold value, and pressure liquid level transmitter and HART manual operator intercommunication show ground water level in real time, when probe monitoring ground water level is higher than high water level threshold value, the display end of pressure liquid level transmitter sends the signal to the controller, the controller begins work through the immersible pump and draws water in order to reduce ground water level, improves soil body bearing capacity and guarantees supporting structure intensity; when the probe monitors that the water level in the water level monitoring well is lower than a preset low water level threshold value, the display end of the pressure liquid level transmitter sends a signal to the controller, and the controller controls the submersible pump to stop working, so that dry burning of the submersible pump caused by the fact that the water level in the dewatering well is lower than a water suction port of the submersible pump is avoided.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a dewatering well structure according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a sand-free pipe and a filter layer according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a filtering mechanism according to an embodiment of the present invention;
fig. 4 is a schematic view of an automatic precipitation water level monitoring device for a foundation pit according to a second embodiment of the present invention;
description of reference numerals:
1-well body, 2-water permeable hole, 3-sand-free pipe, 4-submersible pump, 5-geotextile filter layer, 6-coarse sand layer, 7-clay layer, 8-first filter screen, 9-second filter screen, 10-first annular frame, 11-second annular frame, 12-connecting rod, 13-buoyancy block, 14-spring, 15-top plate, 16-bottom plate, 17-arc plate, 18-water level detection well, 19-display end, 20-probe, 21-flange, 22-controller, 23-signal line, 24-cable line and 25-lead.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
The embodiment relates to a dewatering well structure, which comprises a well body 1 and a sand-free pipe 3 which is arranged along the depth direction of the well body 1 and is provided with a plurality of water permeable holes 2, wherein a filter layer is arranged between the sand-free pipe 3 and the side wall of the well body 1, as shown in figures 1 and 2. The dewatering well structure also comprises a submersible pump 4 suspended at the bottom of the sand-free pipe 3, a filtering mechanism is arranged in the sand-free pipe 3 below the submersible pump 4, and the filtering mechanism is provided with a filter screen which can ascend or descend due to the change of buoyancy. Through set up hole 2 of permeating water on no sand pipe 3 in this embodiment, and then can guarantee that groundwater is arranged to no sand pipe 3 via hole 2 of permeating water, and through setting up filter layer and filter screen, and then can filter the water of 1 lateral wall of well body and diapire, reduce impurity to immersible pump 4's influence, and set up the filter screen into the buoyancy change that receives and liftable, and then can be in sliding repeatedly because of inertial action, can make the part adhere to the impurity on the filter screen and drop, the jam of impurity to the filter screen has been slowed down when avoiding impurity to get into the immersible pump, good working property has been guaranteed, service life is prolonged.
In the structure, the submersible pump 4 discharges underground water in the precipitation well to the outside of the well through the delivery pipe which is not shown in the figure, the filter layer comprises the geotextile filter layer 5 and the coarse sand layer 6 which are sequentially arranged outwards through the sand-free pipe 3, the geotextile filter layer 5 is two layers, and the top of the coarse sand layer 6 is sealed by the clay layer 7 at the top end of the sand-free pipe 3. The specific structure of the filtering mechanism in this embodiment can be as shown in fig. 3, where the filtering net includes a first filtering net 8 and a second filtering net 9 that are arranged at intervals along the height direction of the sand-free pipe 3, and a first annular frame 10 is fixed around the edge of the first filtering net 8, and a second annular frame 11 is fixed around the edge of the second filtering net 9. Second filter screen 9 is located first filter screen 8's below in this embodiment, and the mesh diameter of second filter screen 9 is greater than first filter screen 8's mesh diameter to realize filtering in proper order to large granule impurity and tiny particle impurity respectively. In addition, in order to ensure the synchronism of the lifting of the first filter screen 8 and the second filter screen 9, a connecting rod 12 is fixed between the first annular frame 10 and the second annular frame 11 in the present embodiment.
In order to lift the first filter screen and the second filter screen, a buoyancy block 13 is fixed on the upper surface of the second annular frame 11 in this embodiment, and a spring 14 for pulling the second annular frame 11 downward is provided between the second annular frame 11 and a bottom plate described below. When the water level reaches the buoyancy block at the upper end of the second annular frame 11, the buoyancy block 13 drives the second annular frame 11 under the action of buoyancy, the second annular frame 11 slides upwards together with the first annular frame 10 through the connecting rod 12, at the moment, the spring 14 is in a stretching state, when the tension of the spring 14 is greater than the buoyancy of the buoyancy block 13, the first annular frame 10 slides downwards with the second annular frame 11, and when the buoyancy is greater than the tension, the first annular frame slides upwards again, the first filter screen and the second filter screen slide repeatedly in such a way, so that the first filter screen and the second filter screen continuously block impurities, and in the repeated sliding process, due to the inertia effect, part of the impurities attached to the filter screens can fall off, so that the blockage of the impurities to the filter screens is relieved while the impurities enter the submersible pump, good working performance is.
Can go up and down with the direct and no sand pipe 3 inner wall slip of first filter screen 8 and second filter screen 9 in this embodiment, nevertheless in order to guarantee the stability of going up and down, filter mechanism still includes two leading truck of setting firmly on no sand pipe 3 inner wall in this embodiment, and these two leading truck counterpositions arrange, and first annular frame 10 and second annular frame 11 are located between two leading trucks and are liftable because of sliding. In the concrete structure, this leading truck includes roof 15 and bottom plate 16 along 3 direction of height interval arrangements of sand-free pipe to and locate the arc 17 between roof 15 and bottom plate 16, and this arc 17 internal surface sets up with first annular frame 10 and second annular frame 11 looks adaptation promptly, foretell first annular frame 10 and second annular frame 11 then slip clamp arrange in between two arc 17 and realize going up and down, and set up roof 15 still can realize spacing the lift of filter screen.
Example two
The embodiment relates to an automatic precipitation water level monitoring device for a foundation pit, which comprises a plurality of water level detection wells 18 arranged around the foundation pit, a precipitation well as a pressure liquid level transmitter with a display end 19 and a probe 20, wherein the display end 19 is fixed at the top end of the water level detection well 18, and the probe 20 is positioned in the water level detection well 18, as shown in fig. 4. Wherein the pressure liquid level transmitter communicates with the HART manual operator. This automatic precipitation water level monitoring devices of foundation ditch still includes and holds the electric connection and steerable immersible pump 4 opens controller 22 that stops with the demonstration. In the above structure, the display end 19 is fixed at the top end of the water level monitoring well 18 through the flange 21, the probe 20 is electrically connected with the display end 19 through the signal wire 23, the display end 19 is electrically connected with the input end of the controller through the lead 25, and the submersible pump 4 is electrically connected with the output end of the controller 22 through the cable 24.
According to the automatic precipitation water level monitoring device for the foundation pit, the water level monitoring well and the pressure liquid level transmitter are arranged, the pressure liquid level transmitter can preset a high water level threshold value and a low water level threshold value, the pressure liquid level transmitter is communicated with the HART manual operator to display the underground water level in real time, when the probe monitors that the underground water level is higher than the high water level threshold value, the display end of the pressure liquid level transmitter sends a signal to the controller, the controller starts to pump water through the submersible pump to reduce the underground water level, and the bearing capacity of a soil body is improved to ensure the strength of a supporting structure; when the probe monitors that the water level in the water level monitoring well is lower than a preset low water level threshold value, the display end of the pressure liquid level transmitter sends a signal to the controller, and the controller controls the submersible pump to stop working, so that dry burning of the submersible pump caused by the fact that the water level in the dewatering well is lower than a water suction port of the submersible pump is avoided.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A dewatering well structure is characterized by comprising: the sand-free pipe is arranged along the depth direction of the well body and provided with a plurality of water permeable holes, and a filter layer is arranged between the sand-free pipe and the side wall of the well body; the floating type sand-free pipeline filter is characterized by further comprising a submersible pump suspended at the bottom of the sand-free pipeline, a filter mechanism is arranged in the sand-free pipeline below the submersible pump, and the filter mechanism is provided with a filter screen capable of ascending or descending due to the change of buoyancy.
2. Precipitation well structure according to claim 1, characterized in that: the filtering mechanism further comprises two guide frames fixedly arranged on the inner wall of the sand-free pipe, and the filter screen is arranged between the two guide frames in a sliding manner and can be lifted.
3. Precipitation well structure according to claim 2, characterized in that: the filter screen includes the edge no sand pipe direction of height interval sets up first filter screen and second filter screen, the second filter screen is located the below of first filter screen, just but because of being provided with the connecting rod and go up and down in step between first filter screen and the second filter screen.
4. Precipitation well structure according to claim 3, wherein: the diameter of the meshes of the second filter screen is larger than that of the meshes of the first filter screen.
5. Precipitation well structure according to claim 3, wherein: a buoyancy block is fixed on the second filter screen, and a spring is arranged between the second filter screen and one of the guide frame bottom walls.
6. Precipitation well structure according to claim 5, characterized in that: the leading truck includes roof and the bottom plate along direction of height interval arrangement, and locates arc between roof and the bottom plate, the bottom of spring links firmly on the bottom plate, the filter screen slip clamp is arranged in between two arcs.
7. Precipitation well structure according to any one of claims 1 to 6, wherein: the filter layer comprises a geotextile filter layer and a coarse sand layer which are sequentially arranged from the sand-free pipe to the outside.
8. Precipitation well structure according to claim 7, wherein: the geotextile filter layers are two layers.
9. The utility model provides an automatic precipitation water level monitoring devices of foundation ditch which characterized in that: the underground water well comprises a plurality of water level detection wells arranged around a foundation pit, the dewatering well according to any one of claims 1 to 8, and a pressure liquid level transmitter with a display end and a probe, wherein the display end is fixed at the top end of the water level detection well, the probe is positioned in the water level detection well, the pressure liquid level transmitter is in mutual communication with an HART manual operator, and the underground water well further comprises a controller which is electrically connected with the display end and can control the starting and stopping of the submersible pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921309860.8U CN210621730U (en) | 2019-08-13 | 2019-08-13 | Precipitation well structure and automatic precipitation water level monitoring device of foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921309860.8U CN210621730U (en) | 2019-08-13 | 2019-08-13 | Precipitation well structure and automatic precipitation water level monitoring device of foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210621730U true CN210621730U (en) | 2020-05-26 |
Family
ID=70762807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921309860.8U Active CN210621730U (en) | 2019-08-13 | 2019-08-13 | Precipitation well structure and automatic precipitation water level monitoring device of foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210621730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094929A (en) * | 2022-07-07 | 2022-09-23 | 中煤长江基础建设有限公司 | Pipe well dewatering and drainage equipment and drainage method thereof |
-
2019
- 2019-08-13 CN CN201921309860.8U patent/CN210621730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094929A (en) * | 2022-07-07 | 2022-09-23 | 中煤长江基础建设有限公司 | Pipe well dewatering and drainage equipment and drainage method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210621730U (en) | Precipitation well structure and automatic precipitation water level monitoring device of foundation pit | |
| CN110439015B (en) | Precipitation well structure with clear hole function | |
| WO2023066325A1 (en) | Sunken frame foundation and ground prefabricating equipment and sinking device thereof | |
| CN109083177B (en) | Precipitation process of integrated directional vacuum well point pipe | |
| CN210031870U (en) | Automatic change tube well precipitation control system | |
| CN213114166U (en) | Road drainage device for civil engineering | |
| CN110925018B (en) | Pump room construction method and pump room construction dewatering system in tunnel connection channel | |
| CN112252346A (en) | Construction method of dewatering well | |
| CN108708385B (en) | Integrated directional vacuum well point pipe | |
| CN207512815U (en) | A kind of efficiently row's silt device | |
| CN108286259A (en) | A kind of soft soil foundation base pit dewatering device | |
| CN114687378A (en) | Novel rigid landfill | |
| CN208088322U (en) | A kind of control engineering dewatering device | |
| KR101910617B1 (en) | Floating waste removal machine | |
| CN208328962U (en) | A kind of drainage of foundation pit device under the head positioned at low pressure water | |
| KR101888135B1 (en) | dust removing machine | |
| CN108396756B (en) | Quick sewage discharging and dewatering device and method for quick arrangement and recovery | |
| CN206800354U (en) | A kind of large-scale water channel sewage disposal facility | |
| CN217078824U (en) | Well point dewatering and water filtering device | |
| CN218970051U (en) | Pipe well structure under full operating mode condition | |
| CN214763923U (en) | Movable type drilling bored concrete pile mud filtering and circulating system | |
| CN211948807U (en) | Building water recovery system | |
| CN219909022U (en) | Local automatic precipitation device of foundation ditch | |
| CN218263951U (en) | Local drainage structures of large-scale high building deep basal pit for construction | |
| CN215329975U (en) | Sump pit consolidates prevents structure that runs off |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |