CN114594802A - Automatic dewatering and recharging operation system for deep foundation pit and control method - Google Patents
Automatic dewatering and recharging operation system for deep foundation pit and control method Download PDFInfo
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- CN114594802A CN114594802A CN202210201089.2A CN202210201089A CN114594802A CN 114594802 A CN114594802 A CN 114594802A CN 202210201089 A CN202210201089 A CN 202210201089A CN 114594802 A CN114594802 A CN 114594802A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
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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
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
- E03B3/34—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river of underground water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/406—Aquifer recharge
Abstract
The invention provides an automatic dewatering and recharging operation system and a control method for a deep foundation pit, belonging to the technical field of building construction, the system comprises a monitoring device, a field controller and a terminal controller, wherein the monitoring device comprises a dewatering well, an observation well, a recharging well, a sedimentation tank and a micro-motion level meter, the micro-motion level meter is arranged at the edge of the foundation pit, a first water level detector and a water pump are arranged inside the dewatering well, a second water level detector is arranged inside the observation well, a third water level detector is arranged inside the sedimentation tank, a recharging pump and a greening pump are arranged on one side of the sedimentation tank, the field controller is arranged on the firm ground outside the foundation pit, the field controller comprises a signal acquisition unit, an output control unit, a power management unit, a data communication unit and a safety monitoring unit, the terminal controller comprises a memory storage unit and an automatic alarm unit, the terminal controller is internally provided with a wireless transmission protocol and is in communication connection with the field controller.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to an automatic dewatering and recharging operation system for a deep foundation pit and a control method.
Background
Along with the continuous development of the society, the construction requirements of underground engineering are increasingly improved, effective, safe and controllable construction methods are increasingly emphasized, and the automatic control technology is increasingly applied to engineering construction along with the social development to realize informatization construction. Before the foundation pit construction, the pre-precipitation construction needs to be carried out in advance, the safety of earth excavation, basement structure construction and surrounding buildings is guaranteed, accurate underground water level monitoring and timely precipitation recharge operation are one of the main guarantees of the current deep foundation pit safety construction, and when the foundation pit water inflow, the pumping drainage water yield and the recharge water yield basically reach a balanced state, the underground water can be kept at a basically stable position.
At present, the foundation pit dewatering and recharging operation of most construction sites cannot be accurately controlled, the operation is mostly manual operation, a large amount of manpower and material resources are wasted, the phenomenon that the recharging is not timely or excessive is easily generated, the condition that the underground water level of the construction site is unstable is caused, and the construction safety problem is caused.
Disclosure of Invention
The embodiment of the invention provides an automatic dewatering and recharging operation system and a control method for a deep foundation pit.
In view of the above problems, the technical solution proposed by the present invention is:
the invention provides an automatic dewatering and recharging operation system for a deep foundation pit, which comprises a monitoring device, a field controller and a terminal controller, wherein the monitoring device is connected with the field controller;
the monitoring device comprises a precipitation well, an observation well, a recharging well, a sedimentation tank and a micro-motion level gauge, wherein the precipitation well is uniformly distributed in a foundation pit, the observation well and the recharging well are arranged outside the foundation pit and are uniformly distributed along the circumferential direction of the foundation pit, the observation well is arranged between the recharging well and the precipitation well, the micro-motion level gauge is arranged at the edge of the foundation pit and corresponds to the observation well and the recharging well in number and position, a first water level detector and a water suction pump are arranged in the precipitation well, a second water level detector is arranged in the observation well, a third water level detector is arranged in the sedimentation tank, and a recharging pump and a greening pump are arranged on one side of the sedimentation tank;
the field controller is arranged on the firm ground outside the foundation pit, and comprises a signal acquisition unit, an output control unit, a power management unit, a data communication unit and a safety monitoring unit;
the terminal controller comprises a memory storage unit and an automatic alarm unit, and a wireless transmission protocol is arranged in the terminal controller and is in communication connection with the field controller.
As a preferred technical scheme of the invention, the water suction pump is a submersible pump, a water outlet end of the water suction pump is connected with a downcomer, the other end of the downcomer is communicated with a water inlet end of the sedimentation tank, two groups of partition plates are arranged in the sedimentation tank, the sedimentation tank is divided into three stages by the partition plates, a water passing port is arranged at the top of each group of partition plates, the height of the water passing port is sequentially reduced, and the third water level detector is arranged in the third stage of the sedimentation tank.
As a preferred technical scheme of the invention, the inlet ends of the recharge pump and the greening pump are communicated with the water outlet end of the sedimentation tank, the water outlet end of the recharge pump is connected with a recharge main pipe, the recharge main pipe is connected with a plurality of groups of recharge branch pipes, each group of recharge branch pipes extends to the interior of one group of recharge wells, each group of recharge branch pipes is provided with an electric valve and a flowmeter, and the electric valve and the flowmeter are electrically connected with the field controller.
As a preferred technical scheme of the present invention, one side of the sedimentation tank is further provided with a water replenishing pipe, the water replenishing pipe is connected to a tap water supply pipe network, the water replenishing pipe is provided with a second electric valve, and the second electric valve is electrically connected to the field controller.
As a preferred technical solution of the present invention, the first water level detector, the second water level detector and the third water level detector are all drop-in level meters, and are respectively used for sensing water level elevations in the dewatering well, the recharge well and the sedimentation tank, and the first water level detector, the water pump, the second water level detector, the recharge pump, the third water level detector, the greening pump and the micro-level gauge are all electrically connected to the field controller.
As a preferable technical scheme of the invention, the signal acquisition unit is used for receiving data signals of the first water level detector, the second water level detector, the third water level detector and the micro level gauge, and monitoring the working state of the water pump, the irrigation pump and the greening pump, wherein the working state is divided into on-line, off-line or fault, the output control unit is used for outputting start-stop signals to the water pump, the irrigation pump and the greening pump so as to realize automatic precipitation and irrigation in the deep foundation pit construction process, the power supply management unit is used for monitoring a power supply and realizing automatic switching to a standby power supply when a mains supply is interrupted, the data communication unit adopts a GPRS wireless communication technology, the safety monitoring unit is used for monitoring the waterproof state, the working temperature, the illegal cabinet opening state and the opening state of the field controller.
As a preferred technical solution of the present invention, the memory storage unit is configured to record monitoring item data uploaded by the field controller and form a report form for display, and the automatic alarm unit is configured to monitor a push alarm of an abnormal condition of the item data.
On the other hand, the automatic dewatering and recharging operation control method for the deep foundation pit comprises the following steps:
s1, installing a device, surveying the original water level line elevation of underground water outside a foundation pit, installing a second water level detector in an observation well to a position 50cm below the original water level line, installing a first water level detector in a precipitation well to the position 50cm below a construction safety water level line, installing a water pump in the precipitation well to a position 50cm below the construction safety water level line, connecting a precipitation pipe to an inlet of a sedimentation tank, installing a third water level detector in the sedimentation tank, connecting a recharge pump and a greening pump, sequentially installing an electric valve and a flowmeter at the water outlet end of the recharge pump, introducing the electric valve and the flowmeter into the corresponding recharge well, connecting the water outlet end of the greening pump to a greening spraying water position, installing a micro-level gauge on the ground at the edge of the foundation pit, and connecting each equipment data line and each control line to a designated port of a field controller;
s2, automatically precipitating water, detecting whether the water level in the precipitation well meets the construction safety requirement or not by the first water level detector in real time, and returning to the initial condition to continue judging if the water level meets the construction safety requirement; if the water pump pressure does not meet the preset pressure, the field controller outputs a control signal to start the water pump to pump underground water in the precipitation well into the precipitation tank through the precipitation pipe;
s3, automatic recharging is carried out, after the water pump is started to work, the second water level detector detects whether the water level in the observation well drops to exceed an alarm threshold value, if not, the step S3 is returned to and continuously judged when the step S3 starts; if the water content exceeds the preset value, the field controller controls the recharge pump to start to work, and the water in the sedimentation tank is pumped into the recharge well;
s4, automatically adjusting, after the recharging pump is started to work, detecting whether the water level in the observation well is lifted by the second water level detector, if the water level is lifted to the original water level, controlling the recharging pump to stop working by the field controller, and returning to the step S3 to continue detecting and judging; if not, the working state of the recharging pump is kept to continue recharging.
As a preferred embodiment of the present invention, in the step S3 and the step S4, the water pump is started to operate, and when the recharge pump is not operating, the third water level detector detects the water level in the sedimentation tank, and when the water level exceeds the set maximum water level, the site controller controls the greening pump to start to operate, so as to pump the water in the sedimentation tank to the greening spraying water.
As a preferred technical solution of the present invention, in step S3, after the recharging pump is turned on, the flow meter transmits the recharging flow rate of each recharging well to the field controller, the micro level meter detects the change of the ground surface at the edge of the foundation pit, when the ground surface at the edge of the foundation pit rises, the field controller controls the electric valve on the recharging well at the corresponding position to be adjusted down by a proper amount to reduce the recharging flow rate at the corresponding position, when the ground surface at the edge of the foundation pit sinks, the electric valve is controlled to be adjusted up by a proper amount to increase the recharging flow rate at the corresponding position, and when the micro level meter detects that the amplitude of the ground surface change is greater than a set threshold value, the automatic alarm unit on the terminal controller sends an alarm signal to provide a solution on site by the manager.
Compared with the prior art, the invention has the beneficial effects that:
(1) the system realizes automatic detection of underground water levels inside and outside the foundation pit, controls precipitation and automatic recharging start and stop operation through water level change, has high automation degree, reduces manual intervention, saves labor and material cost, solves the problem of instability of manual operation, is convenient to manage and also ensures construction safety;
(2) the multi-stage sedimentation basin is used for settling precipitation and then recycling the precipitation to the recharging operation, and the excess water quantity can be used for greening spraying, so that water resources are greatly saved;
(3) the field controller collects data of each sensor and detects working state, the operation control of power parts such as a water pump is achieved, the terminal controller records system operation data in real time, remote monitoring and checking are facilitated, an automatic alarm function is achieved, and the working efficiency of managers is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic layout of an automatic precipitation and recharge operation system for a deep foundation pit according to the present invention;
FIG. 2 is a schematic view of a communication connection of an automatic precipitation and recharge operation system for a deep foundation pit according to the present invention;
FIG. 3 is a step diagram of an automatic precipitation and recharge operation control method for a deep foundation pit according to the present invention;
FIG. 4 is a schematic view of the working flow of the automatic control method for precipitation and recharge operation of the deep foundation pit according to the present invention;
description of the reference numerals: 100-a monitoring device; 101-dewatering well; 1011-a first water level detector; 1012-water pump; 1013-downcomer pipe; 102-an observation well; 1021-a second water level detector; 103-recharging the well; 104-a sedimentation tank; 1041-a separator; 1042-a back-filling pump; 1043-recharge main pipe; 1044-recharge branch pipes; 10441-electrically operated valve; 10442-a flow meter; 1045-a third water level detector; 1046-water replenishing pipe; 10461-second electrically operated valve; 1047-greening pump; 105-a micro-motion level; 200-a field controller; 201-a signal acquisition unit; 202-an output control unit; 203-a power management unit; 204-a data communication unit; 205-a safety monitoring unit; 300-a terminal control instrument; 301-a memory storage unit; 302-automatic alarm unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example one
Referring to the attached drawings 1-2, the invention provides a technical scheme: an automatic dewatering and recharging operation system for a deep foundation pit comprises a monitoring device 100, a field controller 200 and a terminal controller 300;
wherein, the monitoring device 100 comprises a precipitation well 101, an observation well 102, a recharging well 103, a sedimentation basin 104 and a micro-motion level gauge 105, the precipitation well 101 is uniformly distributed inside the foundation pit, the observation well 102 and the recharging well 103 are both arranged outside the foundation pit, the observation well 102 and the recharging well 103 are both uniformly distributed along the circumferential direction of the foundation pit, the observation well 102 is arranged between the recharging well 103 and the precipitation well 101, the micro-motion level gauge 105 is arranged at the edge of the foundation pit and corresponds to the number and the positions of the observation well 102 and the recharging well 103, the micro-motion level gauge 105 is used for monitoring the uplift or settlement phenomenon and the related amplitude of the ground surface at the edge of the foundation pit, and judging the balance of the precipitation and recharging water quantities, so as to keep the foundation around the foundation pit stable, a first water level detector 1011 and a water pump are arranged inside the precipitation well 101, a second water level detector 1021 is arranged inside the observation well 102, and a third water level detector 1045 is arranged inside the sedimentation basin 104, a recharging pump 1042 and a greening pump 1047 are arranged on one side of the sedimentation tank 104;
the field controller 200 is installed on the firm ground outside the foundation pit, the field controller 200 comprises a signal acquisition unit 201, an output control unit 202, a power management unit 203, a data communication unit 204 and a safety monitoring unit 205, the signal acquisition unit 201 is used for receiving data signals of a first water level detector 1011, a second water level detector 1021, a third water level detector 1045 and a micro level gauge 105 and monitoring the working states of the signals, the working states are divided into on-line, off-line or fault states to prevent impact in the starting and stopping processes of the water pump, the output control unit 202 is used for outputting starting and stopping signals to a water pump 1012, a recharge pump 1042 and a greening pump 1047 to realize automatic precipitation and recharge in the construction process of the deep foundation pit, realize on-site control of the water pump and emergency stop of loading of the equipment in emergency situations, the power management unit 203 is used for monitoring of a power supply to realize automatic switching to a standby power supply when the mains supply is interrupted, the data communication unit 204 adopts a GPRS wireless communication technology and is used for realizing communication transmission with a terminal controller, and the safety monitoring unit 205 is used for monitoring the waterproof state, the working temperature, the illegal cabinet opening state and the opening state of the field controller 200;
the terminal controller 300 comprises a memory storage unit 301 and an automatic alarm unit 302, a wireless transmission protocol is built in the terminal controller 300 and is in communication connection with the site controller 200, the memory storage unit 301 is used for recording monitoring item data uploaded by the site controller 200 and forming a report form for display, and the automatic alarm unit 302 is used for pushing and alarming for monitoring abnormal conditions of the item data.
The embodiment of the invention is also realized by the following technical scheme.
In the embodiment of the invention, the water pump 1012 is a submersible pump, the water outlet end of the water pump 1012 is connected with a downcomer 1013, the other end of the downcomer 1013 is communicated with the water inlet end of the sedimentation tank 104, two groups of partition boards 1041 are arranged inside the sedimentation tank 104, the partition boards 1041 divide the sedimentation tank 104 into three stages, the top of each group of partition boards 1041 is provided with a water passing port, the height of the water passing port is sequentially reduced, the third water level detector 1045 is arranged inside the third stage of the sedimentation tank 104, the sedimentation tank 104 adopts a three-stage sedimentation structure, the top is communicated with water, so that the sedimentation effect is better, the damage of sand carried in the precipitation operation to the recharging pump 1042 and the greening pump 1047 can be effectively prevented, the third water level detector 1045 detects the water level condition in the sedimentation tank 104, when the lowest water level is reached, a protection signal is output to the field controller 200, so that the recharging pump 1042 and the greening pump 1047 stop running, and the water pump is prevented from idling and being damaged.
In the embodiment of the present invention, the inlet ends of the recharging pump 1042 and the greening pump 1047 are both communicated with the water outlet end of the sedimentation tank 104, the water outlet end of the recharging pump 1042 is connected with a recharging main pipe 1043, the recharging main pipe 1043 is connected with a plurality of groups of recharging branch pipes 1044, each group of recharging branch pipes 1044 extends to the inside of one group of recharging wells 103, each group of recharging branch pipes 1044 is provided with an electric valve 10441 and a flow meter 10442, the electric valve 10441 and the flow meter 10442 are both electrically connected with the field controller 200, the field controller 200 controls the opening and closing size of the electric valve 10441 according to the flow data detected by the flow meter 10442, so as to control the recharging flow rate of each point, and stabilize the foundation at the edge of the foundation pit.
In the embodiment of the present invention, a water replenishing pipe 1046 is further disposed on one side of the sedimentation tank 104, the water replenishing pipe 1046 is connected to a tap water supply pipe network, a second electric valve 10461 is disposed on the water replenishing pipe 1046, the second electric valve 10461 is electrically connected to the site controller 200, when the water pump 1012 stops operating, and the water level in the observation well 102 still does not reach the original water level, the site controller 200 opens the second electric valve 10461, and the tap water is injected into the sedimentation tank 104 for recharging operation, so as to prevent recharging and water shortage.
In the embodiment of the present invention, the first water level detector 1011, the second water level detector 1021, and the third water level detector 1045 are all drop-in type liquid level meters, which are respectively used for sensing water level elevations in the dewatering well 101, the recharge well 103, and the sedimentation basin 104, the first water level detector 1011, the water pump 1012, the second water level detector 1021, the recharge pump 1042, the third water level detector 1045, the greening pump 1047, and the micro-level meter 105 are all electrically connected to the field controller 200, and the field controller 200 outputs corresponding control signals to each power component according to monitoring signals of the sensors, so as to implement automatic operation of the system.
Example two
Referring to fig. 3-4, another embodiment of the present invention provides a method for controlling automatic precipitation and recharge operations of a deep foundation pit, including the following steps:
s1, installing a device, surveying the elevation of the original water level line of underground water outside the foundation pit, installing a second water level detector 1021 in the observation well 102 to a position 50cm below the original water level line, installing a first water level detector 1011 in the precipitation well 101 to the elevation of a construction safety water level line, meanwhile installing a water pump 1012 in the precipitation well 101 to a position 50cm below the construction safety water level line, connecting a precipitation pipe 1013 to an inlet of the sedimentation tank 104, installing a third water level detector 1045 in the sedimentation tank 104, connecting a recharge pump 1042 and a greening pump 1047, sequentially installing an electric valve 10331 and a flowmeter 10442 at the water outlet end of the recharge pump 1042, introducing the water into the corresponding recharge well 103, connecting the water outlet end of the greening pump 1047 to a greening spraying water position, installing a level gauge 105 on the ground at the edge of the foundation pit, and connecting each equipment data line and control line to a designated port of the site controller 200;
s2, automatically lowering water, detecting whether the water level in the dewatering well 101 meets the construction safety requirement or not by the first water level detector 1011 in real time, and returning to the initial condition to continue judging if the water level meets the construction safety requirement; if not, the site controller 200 outputs a control signal to the water suction pump 1012 to start working, and the underground water in the dewatering well 101 is pumped into the sedimentation tank 104 through the dewatering pipe 1013;
s3, automatic recharging is carried out, after the water pump 1012 is started to work, the second water level detector 1021 detects whether the water level in the observation well 102 drops to exceed the alarm threshold value, and if the water level in the observation well 102 does not exceed the alarm threshold value, the step S3 is returned to and continuously judged when the step S3 starts; if the water flow exceeds the preset value, the field controller 200 controls the recharge pump 1042 to start to work, and pumps the water in the sedimentation tank 104 into the recharge well 103;
after the recharging pump 1042 is started to work, the flow meter 10442 transmits the recharging flow of each recharging well 103 to the field controller 200, the micro level meter 105 detects the change situation of the ground surface at the edge of the foundation pit, when the ground surface at the edge of the foundation pit rises, the field controller 200 controls the electric valve 10441 on the recharging well 103 at the corresponding position to be properly adjusted to be small, the recharging flow at the position is reduced, when the ground surface at the edge of the foundation pit sinks, the corresponding electric valve 10441 is controlled to be properly adjusted to be large, the recharging flow at the position is increased, when the micro level meter 105 detects that the ground surface change amplitude is larger than a set threshold value, the automatic alarm unit 302 on the terminal controller 300 sends out an alarm signal, and the manager provides a solution on site;
s4, automatically adjusting, after the recharging pump 1042 is started to work, detecting whether the water level in the observation well 102 is lifted by the second water level detector 1021, if the water level is lifted to the original water level, controlling the recharging pump 1042 to stop working by the field controller 200, and returning to the step S3 to continue detecting and judging; if not, the working state of the recharge pump 1042 is kept to continue recharging;
in step S3 and step S4, the water pump 1012 is turned on, and when the recharge pump 1042 is not operated, the third water level detector 1045 detects the water level in the sedimentation tank 104, and when the water level exceeds the set maximum water level, the site controller 200 controls the greening pump 1047 to be turned on, so as to pump the water in the sedimentation tank 104 to the greening spraying water.
According to the automatic precipitation and recharge operation control method for the deep foundation pit, the change of the underground water level inside and outside the foundation pit is monitored through the water level detector, the water level monitoring condition is judged through the field controller 200, different control signals are output to the power parts, the automatic precipitation and recharge functions of the foundation pit are achieved, and construction safety accidents caused by the fact that the ground surface is raised or settled are avoided.
It should be noted that the specific types and specifications of the first water level detector 1011, the water suction pump 1012, the second water level detector 1021, the recharge pump 1042, the electric valve 10441, the flowmeter 10442, the third water level detector 1045, the second electric valve 10461, the greening pump 1047, the micro-level 105, the field controller 200, and the terminal controller 300 need to be determined by type selection according to the actual specifications and the like of the device, and the specific type selection calculation method adopts the prior art in the field, and therefore, details are not described again.
It should be noted that the power supply and the principle of the first water level detector 1011, the water suction pump 1012, the second water level detector 1021, the recharge pump 1042, the electric valve 10441, the flowmeter 10442, the third water level detector 1045, the second electric valve 10461, the greening pump 1047, the micro-level 105, the field controller 200 and the terminal controller 300 are clear to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. An automatic precipitation and recharge operation system for a deep foundation pit is characterized by comprising a monitoring device (100), a field controller (200) and a terminal controller (300);
wherein the monitoring device (100) comprises a dewatering well (101), an observation well (102), a recharging well (103), a sedimentation tank (104) and a micro-motion level gauge (105), the dewatering well (101) is uniformly distributed in a foundation pit, the observation well (102) and the recharging well (103) are both arranged outside the foundation pit, the observation well (102) and the recharging well (103) are both uniformly distributed along the circumferential direction of the foundation pit, the observation well (102) is arranged between the recharging well (103) and the dewatering well (101), the micro-motion level gauge (105) is arranged at the edge of the foundation pit and corresponds to the observation well (102) and the recharging well (103) in number and position, a first water level detector (1011) and a water suction pump (1012) are arranged in the dewatering well (101), a second water level detector (1021) is arranged in the observation well (102), a third water level detector (1045) is arranged inside the sedimentation tank (104), and a recharge pump (1042) and a greening pump (1047) are arranged on one side of the sedimentation tank (104);
the field controller (200) is installed on the firm ground outside the foundation pit, and the field controller (200) comprises a signal acquisition unit (201), an output control unit (202), a power management unit (203), a data communication unit (204) and a safety monitoring unit (205);
the terminal controller (300) comprises a memory storage unit (301) and an automatic alarm unit (302), and a wireless transmission protocol is arranged in the terminal controller (300) and is in communication connection with the field controller (200).
2. The automatic precipitation and recharge operation system for the deep foundation pit according to claim 1, wherein the water suction pump (1012) is a submersible pump, a precipitation pipe (1013) is connected to a water outlet end of the water suction pump (1012), the other end of the precipitation pipe (1013) is communicated with a water inlet end of the sedimentation tank (104), two groups of partition plates (1041) are arranged inside the sedimentation tank (104), the sedimentation tank (104) is divided into three stages by the partition plates (1041), a water outlet is formed in the top of each group of partition plates (1041), heights of the water outlets are sequentially reduced, and the third water level detector (1045) is arranged inside the third stage of the sedimentation tank (104).
3. The automatic precipitation and recharge operation system for the deep foundation pit as claimed in claim 1, wherein inlet ends of the recharge pump (1042) and the greening pump (1047) are both communicated with a water outlet end of the sedimentation tank (104), a recharge main pipe (1043) is connected to the water outlet end of the recharge pump (1042), a plurality of recharge branch pipes (1044) are connected to the recharge main pipe (1043), each recharge branch pipe (1044) extends into one set of recharge wells (103), each recharge branch pipe (1044) is provided with an electric valve (10441) and a flow meter (10442), and the electric valve (10441) and the flow meter (10442) are both electrically connected with the field controller (200).
4. The automatic precipitation and recharge operation system for the deep foundation pit as claimed in claim 1, wherein a water replenishing pipe (1046) is further arranged on one side of the sedimentation tank (104), the water replenishing pipe (1046) is connected with a tap water supply pipe network, a second electric valve (10461) is arranged on the water replenishing pipe (1046), and the second electric valve (10461) is electrically connected with the site controller (200).
5. The automatic precipitation and recharge operation system for the deep foundation pit according to claim 1, wherein the first water level detector (1011), the second water level detector (1021) and the third water level detector (1045) are all drop-in level gauges respectively used for sensing water level elevations in the precipitation well (101), the recharge well (103) and the sedimentation basin (104), and the first water level detector (1011), the water suction pump (1012), the second water level detector (1021), the recharge pump (1042), the third water level detector (1045), the greening pump (1047) and the micro-motion level gauge (105) are all electrically connected with the field controller (200).
6. The automatic deep foundation pit precipitation and recharge operation system according to claim 1, wherein the signal acquisition unit (201) is configured to receive data signals of the first water level detector (1011), the second water level detector (1021), the third water level detector (1045) and the micro level meter (105), and monitor the working states thereof, which are online, offline or faulty, the output control unit (202) is configured to output start and stop signals to the suction pump (1012), the recharge pump (1042) and the greening pump (1047), so as to achieve automatic precipitation and recharge in the deep foundation pit construction process, the power management unit (203) is configured to monitor a power supply, and achieve automatic switching to a standby power supply when a mains supply is interrupted, the data communication unit (204) adopts a GPRS wireless communication technology, and is configured to achieve communication transmission with the terminal controller, and the safety monitoring unit (205) is used for monitoring the waterproof state, the working temperature, the illegal cabinet opening state and the opening state of the field controller (200).
7. The automatic precipitation and recharge operation system for the deep foundation pit as claimed in claim 1, wherein said memory storage unit (301) is used for recording monitoring project data uploaded by said site controller (200) and forming a report form display, and said automatic alarm unit (302) is used for pushing alarm of abnormal condition of monitoring project data.
8. An automatic deep foundation pit dewatering and recharging operation control method is applied to the automatic deep foundation pit dewatering and recharging operation system of any one of claims 1-7, and is characterized by comprising the following steps of:
s1, installing a device, surveying the original water level elevation of underground water outside a foundation pit, installing a second water level detector (1021) in an observation well (102) to a position 50cm below the original water level, installing a first water level detector (1011) in a precipitation well (101) to a position 50cm above a construction safety water level, installing a water suction pump (1012) in the precipitation well (101) to a position 50cm below the construction safety water level, connecting a precipitation pipe (1013) to an inlet of a sedimentation tank (104), installing a third water level detector (1045) in the sedimentation tank (104), connecting a recharge pump (1042) and a greening pump (1047), sequentially installing an electric valve (10331) and a flowmeter (10442) at the water outlet end of the recharge pump (1042) and then introducing into a corresponding recharge well (103), connecting the water outlet end of the greening pump (1047) to a greening spraying water position, and installing a micro-level gauge (105) at the edge of the foundation pit, connecting each device data and control line to a designated port of the field controller (200);
s2, automatically lowering water, detecting whether the water level in the dewatering well (101) meets the construction safety requirement or not by the first water level detector (1011) in real time, and returning to the initial condition to continue judging if the water level meets the construction safety requirement; if the water level does not meet the requirement, the field controller (200) outputs a control signal to the water suction pump (1012) to start working, and underground water in the dewatering well (101) is pumped into the sedimentation tank (104) through the dewatering pipe (1013);
s3, automatic recharging is carried out, after the water pump (1012) is started to work, the second water level detector (1021) detects whether the water level drop in the observation well (102) exceeds an alarm threshold value, and if the water level drop in the observation well does not exceed the alarm threshold value, the step S3 is returned to and continuously judged; if the water content exceeds the preset value, the field controller (200) controls the recharge pump (1042) to start to work, and water in the sedimentation tank (104) is pumped into the recharge well (103);
s4, automatic adjustment is carried out, after the recharge pump (1042) is started to work, the second water level detector (1021) detects whether the water level in the observation well (102) is lifted, if the water level is lifted to the original water level, the field controller (200) controls the recharge pump (1042) to stop working, and meanwhile, the step S3 is returned to continue detection and judgment; if not, the working state of the recharge pump (1042) is kept to continue recharging.
9. The method for controlling the automatic precipitation and recharge operations of the deep foundation pit according to claim 8, wherein in the step S3 and the step S4, the water pump (1012) is started to operate, when the recharge pump (1042) is not operated, the third water level detector (1045) detects the water level in the sedimentation tank (104), and when the water level exceeds a set maximum water level, the site controller (200) controls the greening pump (1047) to start to operate, so as to pump the water in the sedimentation tank (104) to the greening spraying water.
10. The method for controlling the automatic dewatering and recharging operation of the deep foundation pit according to claim 8, characterized in that in the step S3, after the recharge pump (1042) is started to work, the flow meter (10442) transmits the recharge flow of each recharge well (103) to the field controller (200), the micro-motion level meter (105) detects the change condition of the ground surface at the edge of the foundation pit, when the ground surface at the edge of the foundation pit rises, the field controller (200) controls the electric valve (10441) on the recharging well (103) at the corresponding position to be properly adjusted to be small, the recharging water quantity at the position is reduced, when the ground surface at the edge of the foundation pit is settled, the corresponding electric valve (10441) is controlled to be properly increased to increase the reinjection water quantity at the position, when the micro level meter (105) detects that the earth surface variation amplitude is larger than a set threshold value, an automatic alarm unit (302) on the terminal control instrument (300) sends out an alarm signal, and a manager provides a solution on site.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492142A (en) * | 2022-06-25 | 2022-12-20 | 中建五局土木工程有限公司 | Monitoring and control system for uneven dewatering and draining of large-scale deep foundation pit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492142A (en) * | 2022-06-25 | 2022-12-20 | 中建五局土木工程有限公司 | Monitoring and control system for uneven dewatering and draining of large-scale deep foundation pit |
| CN115492142B (en) * | 2022-06-25 | 2024-04-09 | 中建五局土木工程有限公司 | Monitoring and control system for non-uniform water lowering and draining of large deep foundation pit |
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