CN111980041A - Precipitation tank and foundation pit operation surface precipitation system - Google Patents
Precipitation tank and foundation pit operation surface precipitation system Download PDFInfo
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- CN111980041A CN111980041A CN202010879586.9A CN202010879586A CN111980041A CN 111980041 A CN111980041 A CN 111980041A CN 202010879586 A CN202010879586 A CN 202010879586A CN 111980041 A CN111980041 A CN 111980041A
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- 238000001556 precipitation Methods 0.000 title claims description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 429
- 238000001914 filtration Methods 0.000 claims abstract description 83
- 238000005192 partition Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000002689 soil Substances 0.000 claims description 24
- 239000012466 permeate Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 16
- 230000006872 improvement Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
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- 230000003631 expected effect Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Abstract
The invention relates to a dewatering tank and a foundation pit operation surface dewatering system, wherein the dewatering tank comprises: a box body, the bottom of which forms a tip; the inner partition plate separates a water filtering cavity and a water collecting cavity in the inner cavity of the box body; the water filtering cavity is used for filling water filtering materials, and water inlet holes are distributed in the upper part of the side wall of the box body corresponding to the water filtering cavity; the internal communicating channel is arranged at the bottom of the inner partition plate, communicates the water filtering cavity and the water collecting cavity and allows water filtered by the water filtering cavity to flow into the water collecting cavity; the water collecting cavity is communicated with the water collecting cavity and is used for being communicated with a water pump on the ground to suck collected water in the water collecting cavity, and the controller is fixedly arranged in the water collecting cavity and is integrated with a pressure sensor which is used for detecting the water pressure of the position where the controller is located. The water-reducing tank can be repeatedly used for water-reducing operation, a pit groove does not need to be excavated, and the field construction operation cannot be influenced. The controller detects the water level pressure in the water reducing tank, so that the water pump does not need to work continuously, the water pump is prevented from being burnt out, and the energy consumption is reduced.
Description
Technical Field
The invention belongs to the technical field of foundation pit dewatering construction, and particularly relates to a reusable dewatering tank and a foundation pit working surface dewatering system.
Background
When a building is built, a foundation pit needs to be excavated, underground water often meets the excavation process of the foundation pit, and in order to prevent water seepage of the foundation pit base and keep the foundation pit bottom dry, construction is facilitated, foundation pit dewatering operation needs to be carried out to reduce the underground water level or drain the underground water.
When the depth of the underground water is deep, a dewatering well is usually adopted as a concrete dewatering measure, and dewatering of the dewatering well is suitable for soil with large aquifer thickness and large permeability coefficient. For the groundwater with shallow depth, the process of pumping the precipitation well is complex, the requirement on the technical level is high, the construction period is long, the treatment cost can be greatly increased when the precipitation well is used for treating the shallow groundwater, and for the soil layers with small thickness of the aquifer, such as cohesive soil, loess with cracks, collapsible loess and the like, the permeability coefficient is small, the economic benefit is poor when the precipitation well is used, the water yield of the well is low, the shallow water cannot be rapidly discharged, and the expected effect cannot be achieved.
However, the water collecting pit or the water collecting tank is dug at the edge of the foundation pit, water collection in the middle of the foundation pit cannot be discharged, too many water collecting pits can also lead to the situation that construction operation and mechanical walking are not facilitated, potential safety hazards are easy to cause, and in addition, silt also easily falls into the water collecting pit in the construction process, the drainage effect is influenced.
Disclosure of Invention
The invention aims to provide a dewatering tank, which aims to solve the technical problem that construction operation is influenced due to the fact that a sump is dug at the edge of a foundation pit in the prior art; meanwhile, the invention also provides a foundation pit working surface dewatering system, which utilizes the dewatering tank to solve the problem that a sump needs to be dug at the edge of the foundation pit to solve the foundation pit dewatering in the prior art.
In order to achieve the purpose, the technical scheme of the water reducing tank provided by the invention is as follows: a precipitation tank, comprising:
the size of the left length direction and the right length direction is larger than that of the front width direction and the rear width direction, and the front width dimension and the rear width dimension of the bottom of the box body are gradually reduced from top to bottom so as to form a tip at the bottom of the box body and be used for extruding into a soil layer when the box body is pressed to descend;
the inner partition plate is arranged in the box body so as to separate a water filtering cavity and a water collecting cavity in an inner cavity of the box body;
the water filtering cavity is used for filling water filtering materials, and water inlet holes are distributed in the upper part of the box body corresponding to the side wall of the water filtering cavity and used for allowing underground water to permeate into the water filtering cavity;
the internal communicating channel is arranged at the bottom of the inner partition plate, communicates the water filtering cavity and the water collecting cavity and allows water filtered by the water filtering cavity to flow into the water collecting cavity;
the water outlet pipe is fixedly arranged on the outer side of the box body, one end of the water outlet pipe is provided with a water inlet which is communicated with the water collecting cavity, and the other end of the water outlet pipe is communicated with a water collecting main pipe on the ground;
the controller is fixedly arranged in the water collecting cavity, and is integrated with a pressure sensor which is used for detecting the water pressure at the position of the controller;
when the water pressure detected by the pressure sensor rises to a set high water level pressure value, the controller sends a signal to the ground to indicate that the water pressure in the water reducing tank is high, and a water pump communicated with the water collecting main pipe works to realize water drainage;
when the water pressure detected by the pressure sensor is reduced to a set low water level pressure value, the controller sends a signal to the ground to indicate that the water pressure in the water reducing tank is low, and the water pump communicated with the water collecting main pipe is stopped.
The beneficial effects are that: when the water reducing tank provided by the invention is used and pressed into a foundation pit soil layer, water in the soil layer can permeate into the water filtering cavity under the action of water level pressure difference, is deposited at the bottom of the water filtering cavity after being filtered, then enters the water collecting cavity through the internal communicating channel, and when a water pump on the ground works, the water in the water collecting cavity is sucked away through the drain pipe, so that the operation of sucking and reducing water is realized. The precipitation tank provided by the invention can be repeatedly used for precipitation operation, a pit and a groove do not need to be excavated, the field construction operation is not affected, and the safety performance is good. And moreover, by separating the water filtering cavity and the water collecting cavity, water which permeates into the water collecting cavity can be filtered through the water filtering cavity, and when the liquid level in the water collecting cavity reaches a set water level, the corresponding water pump is controlled to be started, so that the suction operation is realized, and the working efficiency of the water pump is effectively improved. In addition, the water level pressure in the water collecting cavity is detected through the controller, the water pump can be controlled to work and stop when, the water pump does not need to work all the time, the working efficiency is high, and the service life of the water pump is long.
As a further improvement, the internal communication channel is a through hole arranged on the inner baffle plate, or a through hole enclosed by the inner baffle plate and the box body.
The beneficial effects are that: the internal communicating channel is a through hole, and the processing and forming are convenient.
As a further improvement, a grate is fixedly arranged at the through hole and used for passing water and blocking filtered water from flowing into the water collecting cavity.
The beneficial effects are that: the strainer is adopted for filtering, so that the water filtering material can be blocked under the condition of ensuring smooth water flow.
As a further improvement, the box body comprises a lower box body and a top cover plate, and the lower box body and the top cover plate are detachably or openably connected.
The beneficial effects are that: the top cover plate adopts the detachable connection or the opening and closing connection, and the top cover plate is convenient to open.
As a further improvement, the inner partition extends in the front-rear direction, and the water filtering cavities and the water collecting cavities are correspondingly distributed on the left side and the right side of the inner partition.
The beneficial effects are that: the water collecting cavity and the water filtering cavity are separated in the length direction, so that the water filtering cavity with a larger size can be obtained, and the arrangement of the water inlet holes is convenient to guarantee.
As a further improvement, the water filtering cavity is filled with the water filtering material.
The beneficial effects are that: the water filtering material can be filled in advance when the precipitation box is prefabricated in a factory.
As a further improvement, the controller is at the same height as the water inlet.
The beneficial effects are that: the water level pressure value set by the water inlet is convenient to determine by taking the water inlet as a reference, and the control is convenient.
As further improvement, the controller includes the box body, and the box body is inside to be equipped with pressure sensor, still be equipped with signal lamp controller, signal lamp controller is used for controlling the signal lamp on ground, and when pressure sensor detected the high water level pressure value, signal lamp controller controlled ground's signal lamp was in the first state, and the suggestion is opened the water pump and is realized the drainage, and when pressure sensor detected the low water level pressure value, signal lamp controller controlled ground's signal lamp was in the second state, and the suggestion is closed the water pump.
The beneficial effects are that: the signal lamp controller is arranged for controlling the signal lamps on the ground to be in different states, so that the observation is convenient, and whether the water pump works is controlled according to the states.
The technical scheme of the foundation pit working surface dewatering system provided by the invention is as follows: the foundation pit operation surface dewatering method comprises the following steps:
the plurality of water reducing tanks are pressed into the soil layer of the foundation pit operation surface;
the precipitation tank comprises a tank body, the size of the left length direction and the right length direction is larger than that of the front width direction and the rear width direction, and the front width dimension and the rear width dimension of the bottom of the tank body are gradually reduced from top to bottom so as to form a tip at the bottom of the tank body and be used for extruding into a soil layer when the tank body is pressed to descend;
the inner partition plate is arranged in the box body so as to separate a water filtering cavity and a water collecting cavity in an inner cavity of the box body;
the water filtering cavity is used for filling water filtering materials, and water inlet holes are distributed in the upper part of the box body corresponding to the side wall of the water filtering cavity and used for allowing underground water to permeate into the water filtering cavity;
the internal communicating channel is arranged at the bottom of the inner partition plate, communicates the water filtering cavity and the water collecting cavity and allows water filtered by the water filtering cavity to flow into the water collecting cavity;
the water outlet pipe is fixedly arranged on the outer side of the box body, one end of the water outlet pipe is provided with a water inlet which is communicated with the water collecting cavity, and the other end of the water outlet pipe is communicated with a water collecting main pipe on the ground;
the controller is fixedly arranged in the water collecting cavity, and is integrated with a pressure sensor which is used for detecting the water pressure at the position of the controller;
the water collecting main pipe is positioned on the ground and is communicated with the drainage pipes of the precipitation tanks;
the signal receiving device is used for receiving a signal sent by a controller in the precipitation tank;
the water pump is communicated with the water collecting main pipe;
when the water pressure detected by the pressure sensor rises to a set high water level pressure value, the controller sends a signal to the signal receiving device, the water pressure in the water tank rises to the set high water level pressure value, the water pump works, and water in the water collecting cavity of the water reducing tank is sucked through the water collecting main pipe and the water discharging pipe;
when the water pressure detected by the pressure sensor is reduced to a set low water level pressure value, the controller sends a signal to the signal receiving device, the water pressure in the water tank is reduced to the set low water level pressure value, and the water pump is stopped.
The beneficial effects are that: when the foundation pit operation surface dewatering system provided by the invention is used, the plurality of dewatering tanks are pressed into the soil layer of the foundation pit, water in the soil layer can permeate into the water filtering cavity, is deposited at the bottom of the water filtering cavity after being filtered, then enters the water collecting cavity through the internal communicating channel, and when a water pump on the ground works, the water in the water collecting cavity is pumped away through the drain pipe, so that the pumping dewatering operation is realized. The precipitation tank provided by the invention can be repeatedly used for precipitation operation, a pit and a groove do not need to be excavated, the field construction operation is not affected, and the safety performance is good. And moreover, by separating the water filtering cavity and the water collecting cavity, water which permeates into the water collecting cavity can be filtered through the water filtering cavity, and when the liquid level in the water collecting cavity reaches a set water level, the corresponding water pump is controlled to be started, so that the suction operation is realized, and the working efficiency of the water pump is effectively improved. In addition, the water level pressure in the water collecting cavity is detected through the controller, the water pump can be controlled to work and stop when, the water pump does not need to work all the time, the working efficiency is high, and the service life of the water pump is long.
As a further improvement, the internal communication channel is a through hole arranged on the inner baffle plate, or a through hole enclosed by the inner baffle plate and the box body.
The beneficial effects are that: the internal communicating channel is a through hole, and the processing and forming are convenient.
As a further improvement, a grate is fixedly arranged at the through hole and used for passing water and blocking filtered water from flowing into the water collecting cavity.
The beneficial effects are that: the strainer is adopted for filtering, so that the water filtering material can be blocked under the condition of ensuring smooth water flow.
As a further improvement, the box body comprises a lower box body and a top cover plate, and the lower box body and the top cover plate are detachably or openably connected.
The beneficial effects are that: the top cover plate adopts the detachable connection or the opening and closing connection, and the top cover plate is convenient to open.
As a further improvement, the inner partition extends in the front-rear direction, and the water filtering cavities and the water collecting cavities are correspondingly distributed on the left side and the right side of the inner partition.
The beneficial effects are that: the water collecting cavity and the water filtering cavity are separated in the length direction, so that the water filtering cavity with a larger size can be obtained, and the arrangement of the water inlet holes is convenient to guarantee.
As a further improvement, the water filtering cavity is filled with the water filtering material.
The beneficial effects are that: the water filtering material can be filled in advance when the precipitation box is prefabricated in a factory.
As a further improvement, the controller is at the same height as the water inlet.
The beneficial effects are that: the water level pressure value set by the water inlet is convenient to determine by taking the water inlet as a reference, and the control is convenient.
As a further improvement, the signal receiving device is a signal lamp, each signal lamp is arranged corresponding to each precipitation tank, a signal lamp controller is integrated in a controller of the precipitation tank and is in control connection with the corresponding signal lamp, and when a pressure sensor in the controller of the precipitation tank detects a high water level pressure value, the signal lamp controller controls the signal lamp on the ground to be in a first state and prompts the water pump to be started to drain; when the pressure sensor detects the low water level pressure value, the signal lamp controller controls the signal lamp on the ground to be in the second state, and the water pump is prompted to be turned off.
The beneficial effects are that: the signal lamp controller is arranged for controlling the signal lamps on the ground to be in different states, so that the observation is convenient, and whether the water pump works is controlled according to the states.
Drawings
Fig. 1 is a schematic structural view of a precipitation tank according to an embodiment 1 of the present invention;
FIG. 2 is a right side schematic view of the left endplate of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 5 is a schematic structural diagram of an embodiment of a foundation pit working surface precipitation system provided by the invention.
Description of reference numerals:
1-box body, 101-opening, 102-boundary, 103-water inlet hole, 2-top cover plate, 3-water outlet pipe, 4-transmission line, 5-left end plate, 6-controller, 10-signal lamp, 11-inner partition plate, 111-grate, 12-water filtering material, 13-water reducing tank, 14-water pump, 15-water collecting main pipe, 16-foundation pit to-be-excavated area, 100-water filtering cavity, 200-water collecting cavity, 300-in-box water level line and 400-external water level surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The specific embodiment 1 of the downcomer provided by the invention:
as shown in fig. 1 to 4, the precipitation tank in this embodiment is used for pressing into the foundation pit area needing drainage, specifically, wheels or a bucket or manpower can be used for pressing the precipitation tank into the soil layer, and an engineering vehicle can be used for pressing in. After the soil layer is pressed in, the water content in the soil layer is higher, the water level outside the box is higher, through the high-low water level difference, water in the foundation pit can slowly permeate into the precipitation box through the corresponding water inlet hole, is collected into the water collecting cavity after being filtered, and is pumped out by the water pump through the corresponding pipeline system so as to realize precipitation operation.
The water-reducing tank comprises a tank body 1, the tank body 1 is of a closed structure, the size of the left length direction and the right length direction of the water-reducing tank is larger than that of the front width direction and the rear width direction of the water-reducing tank, the vertical cross section of the tank body 1 is triangular for facilitating pressing of a soil layer, the front width dimension and the rear width dimension of the bottom of the tank body are gradually reduced from top to bottom, and a tip structure is formed at.
Specifically, the box 1 includes box and top surface cover plate 2 down, and the box includes preceding lateral wall, back lateral wall, left end board 5 and right end board down, and preceding lateral wall and back lateral wall are the V-arrangement, and it is corresponding, and left end board 5 and right end board are the triangle-shaped structure then, and top surface cover plate 2 specifically can articulate with box down and be connected to make top surface cover plate can open and shut and arrange, conveniently pack into corresponding spare part or drainage material in the box down, also conveniently change the maintenance.
An inner partition plate 11 is fixedly arranged in the box body 1, the inner partition plate 11 separates a water filtering cavity 100 and a water collecting cavity 200 in the inner cavity of the box body 1, and the inner partition plate 11 extends in the front-back direction, so that the water filtering cavity 100 and the water collecting cavity 200 are correspondingly distributed on the left side and the right side of the inner partition plate 11. Because the water filtering cavity 100 is mainly used for collection and filtration, the water filtering cavity has a large volume and the water collecting cavity has a relatively small volume in order to meet the output water quantity. In addition, the water filtering chamber 100 is filled with a water filtering material 12, and the water filtering material 12 is a light filtering material such as palm, hemp, non-woven fabric, and the like, and is used for filtering water entering through the water inlet hole, so as to prevent the pipeline from being blocked when pumping and draining rainfall. Of course, in other embodiments, the water filtering material may be sand or the like.
The front side wall and the rear side wall are respectively provided with a water filtering cavity side wall section, the water filtering cavity side wall section corresponds to the water filtering cavity, the water filtering cavity side wall sections, the inner partition plate, the top cover plate and the corresponding right end plate on the two sides are matched to form a water filtering cavity 100, a plurality of water inlet holes 103 are uniformly distributed in the upper part of the water filtering cavity side wall section, and the water inlet holes 103 are used for water in a soil layer to permeate into the water filtering cavity. The water entering the water filtering cavity slowly sinks under the influence of gravity and gradually deposits on the lower part of the water filtering cavity.
The upper part of the side wall section of the water filtering cavity is provided with a plurality of water inlet holes 103 so as to realize permeation water inlet, and the lower part is used for preventing water from overflowing, so that the sinking water can be collected at the bottom of the water filtering cavity. Here the water inlet 103 is located above the boundary 102. In order to improve the water inlet efficiency, the area of the water inlet hole is larger than one half of the area of the corresponding side wall section, and the specific occupied area can be selected and arranged according to actual needs.
It should be noted that, according to the principle of the communicating vessels, the liquid level heights are the same when the liquid level pressures of the connected open containers are equal, and are different if a pressure difference exists. When the precipitation tank provided by the embodiment is applied to the scene of underground water in a shallow aquifer or local water accumulation after rainfall in the excavation process of the cohesive soil foundation pit, as shown in fig. 1, because the external water level 400 is higher than the water level 300 in the tank, external water can continuously permeate into the cavity, and finally the tank body is filled with water or is at the same height with the external water level finally, the precipitation tank is suitable for quickly removing the underground water in the shallow aquifer or the local water accumulation after rainfall in the excavation process of the cohesive soil foundation pit, so that a waterless working surface is provided for construction in the pit.
The bottom of the inner partition 11 and the box 1 form a through hole, the through hole serves as an internal communication channel to communicate the water filtering chamber 100 with the bottom of the water collecting chamber 200, and a perforated strainer 111 is further arranged at the through hole, and the perforated strainer 111 is used for passing water and blocking the passage of the water filtering material.
The water deposited at the bottom of the water filtering cavity 100 enters the water collecting cavity 200 through the internal communicating channel, the water in the water filtering cavity 100 is more and more along with the longer time that the precipitation tank is sunk into the soil layer, and the liquid level in the water collecting cavity 200 is gradually increased.
In this embodiment, the water collecting cavity 200 is located on the left side of the water filtering cavity 100, the water collecting cavity 200 is surrounded by the front and rear side walls of the box body, the left end plate and the inner partition plate, the left end plate is provided with the opening 101, the drain pipe 3 is installed at the opening 101, one end of the drain pipe 3 is a water inlet, the water inlet is communicated with the water collecting cavity, and the other end of the drain pipe 3 is communicated with the water collecting main pipe on the ground so as to be used for pumping out water collected in the water collecting cavity 200 through the drain pipe 3 when the water.
It should be noted that, a controller 6 is fixedly installed on the inner side of the left end plate 5, the controller 6 is located at the side of the opening 101, the controller 6 and the water inlet of the water discharge pipe 3 are arranged at the same height, the box body of the controller is sealed and waterproof, a pressure sensor and a signal lamp controller are integrated in the box, the transmission line 4 is led out from the controller 6 and the left end plate 5 and connected with a signal lamp 10, and the signal lamp 10 is connected with the transmission line 4 and then fixed on the water collection header pipe 15.
When the pressure sensor of the controller 6 detects that the water pressure rises to a set high water level pressure value, for example, P = ρ gh, where ρ is the density of water, g is the acceleration of gravity, and h is the height from the bottom of the opening 101 on the precipitation tank to the lowest row of water inlet holes, the controller 6 sends a signal to the signal lamp 10, the signal lamp 10 turns green and is in a first state, which indicates that the water pressure inside the precipitation tank rises to the set high water level pressure value, and the water pump 14 operates to pump the water in the water collecting chamber 200 through the water collecting main pipe 15 and the water outlet pipe 3.
When the pressure sensor of the controller 6 detects that the water pressure is reduced to the set low water level pressure value, for example, P = ρ gd, ρ is the density of water, g is the acceleration of gravity, and d is the diameter of the opening 101 in the precipitation tank, the controller 6 sends a signal to the signal lamp 10, the signal lamp 10 turns red and flashes, and the second state indicates that the water pressure in the precipitation tank is reduced to the set low water level pressure value, and the water pump 14 is stopped.
The precipitation case that this embodiment provided can impress in the soil layer when using, after slowly catchmenting, is taken away ponding by the water pump. When the water reducing tank is pressed into a soil layer for water collection, no depression is formed on the operation surface of the foundation pit, the construction is slightly affected, the safety performance is good, and the water reducing tank is suitable for being applied to the shallow foundation pit water reducing operation.
In other embodiments, the drainage chamber of the dewatering tank may be directly filled with the drainage material at the time of shipment, and in other embodiments, the drainage chamber may not be filled with the drainage material at the time of shipment, but the corresponding drainage material may be refilled at the construction site.
The specific embodiment 2 of the downcomer provided by the invention:
the difference between the water reducing tank in the embodiment and the water reducing tank in the embodiment 1 is mainly that: in example 1, the signal lamp is used as a signal receiving device, and the two states of the signal lamp are red and green. In this embodiment, the signal lamp may also be in a light state and a light-off state to prompt the water pump to start or stop.
Of course, in other embodiments, the signal receiving device may also use a computer to receive the signal and determine whether to start the water pump according to the water level displayed on the display screen.
Correspondingly, the signal sent by the controller can send out a wired signal through the transmission line and also can send out a wireless signal, and the signal can be normally received as long as the signal is not interfered by the construction environment.
The specific embodiment 3 of the downcomer provided by the invention:
the difference between the water reducing tank in the embodiment and the water reducing tank in the embodiment 1 is mainly that: the precipitation tank in embodiment 1 is the triangle-shaped box, and in this embodiment, the bottom of precipitation tank is triangle-shaped, and upper portion is the rectangle design, and the bottom of front and back both sides wall is inside buckling promptly, and upper portion then extends along upper and lower direction, can form most advanced in the bottom of precipitation tank equally to conveniently be impressed the soil layer.
Of course, compared with a rectangular box body, the upper parts of the front side wall and the rear side wall can also be arc-shaped extending inwards, and sinking resistance can be effectively reduced.
The specific embodiment 4 of the downcomer provided by the invention:
the difference between the water reducing tank in the embodiment and the water reducing tank in the embodiment 1 is mainly that: in example 1, the bottom of the inner partition plate and the tank body form a through hole, and the through hole serves as an internal communication channel to communicate the water filtering chamber and the water collecting chamber. In this embodiment, the bottom of inner baffle directly extends to bottom of the case end, directly sets up the through-hole on the inner baffle in order to form corresponding inside intercommunication passageway to intercommunication drainage chamber and water collecting chamber.
The specific embodiment 5 of the downcomer provided by the invention:
the difference between the water reducing tank in the embodiment and the water reducing tank in the embodiment 1 is mainly that: the top cover panel in embodiment 1 is hinged to the lower case in an openable and closable arrangement. In this embodiment, the top surface cover plate is directly installed on the top end of the lower box body in a screw detachable connection mode, and the top surface cover plate can be directly detached when the water filtering material is filled.
Of course, in other embodiments, the top cover plate may be detachably mounted on the top end of the lower box body by means of a snap connection.
The embodiment 6 of the downcomer provided by the invention:
the difference between the water reducing tank in the embodiment and the water reducing tank in the embodiment 1 is mainly that: in embodiment 1, a pressure sensor and a signal lamp controller are integrated in the controller to correspondingly control a signal lamp on the water collecting main pipe to switch states according to the pressure inside the water reducing tank. In this embodiment, a signal lamp controller may also be omitted, and the signal detected by the pressure sensor is directly transmitted to the ground, and the computer serving as the signal receiving device receives the information detected by the pressure sensor, and then determines whether to send a prompt to inform an operator of controlling the water pump to be turned on, or inform the operator of stopping the water pump.
The embodiment of the foundation pit working surface dewatering system provided by the invention comprises the following steps:
the structure of the foundation pit operation surface precipitation system in this embodiment is as shown in fig. 5, and includes a plurality of precipitation tanks 13, and the structure of the precipitation tank 13 here is the same as that of the precipitation tank in the above-mentioned precipitation tank embodiment 1, and details are not repeated here specifically.
After the plurality of water reducing tanks 13 are pressed into corresponding soil layers, the water discharge pipes of the plurality of water reducing tanks 13 are communicated with a water collecting main pipe 15, the water collecting main pipe 15 is positioned on the ground, and a water pump 14 is connected to the water collecting main pipe 15.
When the water level in the water collection chamber of each precipitation tank rises to a set water level, the water pump 14 starts to operate as a water pump to achieve suction precipitation.
In fact, for more reasonable utilization precipitation device, test in order to confirm the on-time of vacuum pump when setting for the water level before using better, treat that the water level descends to a certain position, the vacuum pump is closed, avoids precipitation case to seal not tight or when the water yield is less in the collecting main, and the low efficiency, the high energy consumption that the vacuum pump continuous operation brought are avoided.
When the water level reducing device is used specifically, the water reducing tanks 13 are pressed into a foundation pit area to be excavated 16, the specific pressing positions of the water reducing tanks can be uniformly distributed according to the water content of all parts of the foundation pit, the water drainage pipes exposed out of the water level are communicated with the water collecting main pipe 15, and when the water amount in the water reducing tanks 13 reaches a set water level, the water pump 14 works to pump and drain water.
In other embodiments, the precipitation tank may also adopt the precipitation tank structure in any one of the precipitation tanks 2 to 6.
Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A precipitation tank, comprising:
the size of the left length direction and the right length direction is larger than that of the front width direction and the rear width direction, and the front width dimension and the rear width dimension of the bottom of the box body are gradually reduced from top to bottom so as to form a tip at the bottom of the box body and be used for extruding into a soil layer when the box body is pressed to descend;
the inner partition plate is arranged in the box body so as to separate a water filtering cavity and a water collecting cavity in an inner cavity of the box body;
the water filtering cavity is used for filling water filtering materials, and water inlet holes are distributed in the upper part of the box body corresponding to the side wall of the water filtering cavity and used for allowing underground water to permeate into the water filtering cavity;
the internal communicating channel is arranged at the bottom of the inner partition plate, communicates the water filtering cavity and the water collecting cavity and allows water filtered by the water filtering cavity to flow into the water collecting cavity;
the water outlet pipe is fixedly arranged on the outer side of the box body, one end of the water outlet pipe is provided with a water inlet which is communicated with the water collecting cavity, and the other end of the water outlet pipe is communicated with a water collecting main pipe on the ground;
the controller is fixedly arranged in the water collecting cavity, and is integrated with a pressure sensor which is used for detecting the water pressure at the position of the controller;
when the water pressure detected by the pressure sensor rises to a set high water level pressure value, the controller sends a signal to the ground to indicate that the water pressure in the water reducing tank is high, and a water pump communicated with the water collecting main pipe works to realize water drainage;
when the water pressure detected by the pressure sensor is reduced to a set low water level pressure value, the controller sends a signal to the ground to indicate that the water pressure in the water reducing tank is low, and the water pump communicated with the water collecting main pipe is stopped.
2. The precipitation tank of claim 1, wherein the internal communication channel is a through hole formed in the inner partition plate or a through hole formed by the inner partition plate and the tank body.
3. The precipitation tank of claim 2, wherein a grate is fixedly arranged at the through hole and used for passing water and blocking the filtered water from flowing into the water collecting cavity.
4. The precipitation tank of claim 1, 2 or 3, wherein the tank body comprises a lower tank body and a top cover plate, and the lower tank body and the top cover plate are detachably or openably connected.
5. The downcast tank of claim 1, 2 or 3, wherein the inner partition extends in a front-rear direction, and the water filtering chambers and the water collecting chambers are correspondingly distributed on left and right sides of the inner partition.
6. A precipitation tank according to claim 1, 2 or 3, wherein said drainage chamber is filled with said drainage material.
7. A precipitation tank according to claim 1, 2 or 3, wherein said controller is level with said water inlet.
8. The water reducing tank is characterized in that the controller comprises a box body, the pressure sensor is arranged in the box body, a signal lamp controller is further arranged, the signal lamp controller is used for controlling a signal lamp on the ground, when the pressure sensor detects a high water level pressure value, the signal lamp controller controls the signal lamp on the ground to be in a first state, the water pump is prompted to be started to realize water drainage, and when the pressure sensor detects a low water level pressure value, the signal lamp controller controls the signal lamp on the ground to be in a second state, the water pump is prompted to be turned off.
9. A foundation pit working surface dewatering system, comprising:
a plurality of precipitation tanks, wherein the precipitation tanks are used as claimed in any one of claims 1 to 7 and are used for being pressed into the soil layer of the foundation pit operation surface;
the water collecting main pipe is positioned on the ground and is communicated with the drainage pipes of the precipitation tanks;
the signal receiving device is used for receiving a signal sent by a controller in the precipitation tank;
the water pump is communicated with the water collecting main pipe;
when the water pressure detected by a pressure sensor in a controller of the water dropping tank rises to a set high water level pressure value, the controller sends a signal to a signal receiving device to indicate that the water pressure in the water tank rises to the set high water level pressure value, a water pump works, and water in a water collecting cavity of the water dropping tank is sucked through a water collecting main pipe and a water discharging pipe;
when the water pressure detected by a pressure sensor in a controller of the water reducing tank is reduced to a set low water level pressure value, the controller sends a signal to a signal receiving device, the signal receiving device indicates that the water pressure in the water tank is reduced to the set low water level pressure value, and the water pump is stopped.
10. The foundation pit operation surface dewatering system according to claim 9, wherein the signal receiving device is a signal lamp, each signal lamp is arranged corresponding to each dewatering tank, a signal lamp controller is integrated in a controller of the dewatering tank and is in control connection with the corresponding signal lamp, and when a pressure sensor in the controller of the dewatering tank detects a high water level pressure value, the signal lamp controller controls a signal lamp on the ground to be in a first state to prompt the water pump to be started to drain; when the pressure sensor detects the low water level pressure value, the signal lamp controller controls the signal lamp on the ground to be in the second state, and the water pump is prompted to be turned off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879586.9A CN111980041A (en) | 2020-08-27 | 2020-08-27 | Precipitation tank and foundation pit operation surface precipitation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879586.9A CN111980041A (en) | 2020-08-27 | 2020-08-27 | Precipitation tank and foundation pit operation surface precipitation system |
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| CN113152492A (en) * | 2021-04-27 | 2021-07-23 | 西南交通大学 | Active drainage method and device for side slope |
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Application publication date: 20201124 |