CN116818043A - Groundwater level monitoring device and application method thereof - Google Patents
Groundwater level monitoring device and application method thereof Download PDFInfo
- Publication number
- CN116818043A CN116818043A CN202310901794.8A CN202310901794A CN116818043A CN 116818043 A CN116818043 A CN 116818043A CN 202310901794 A CN202310901794 A CN 202310901794A CN 116818043 A CN116818043 A CN 116818043A
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- China
- Prior art keywords
- lifting rope
- rope
- driving device
- buoyancy frame
- buoyancy
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- 239000003673 groundwater Substances 0.000 title claims abstract description 34
- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000004804 winding Methods 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
- G01F23/20—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 by measurement of weight, e.g. to determine the level of stored liquefied gas
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a groundwater level monitoring device and an application method thereof. In the process that the monitoring device is lowered from the wellhead/orifice, when the buoyancy frame is not contacted with the water surface, the data fed back by the force sensor is the sum of the weights of the counterweight box and the buoyancy frame, and when the buoyancy frame is contacted with the water surface, the data fed back by the force sensor is the weight of the counterweight box, so that the lifting rope driving device can start to work and stop working according to the data fed back by the force sensor, the buoyancy frame can automatically follow the water surface of the groundwater, and the real-time water level of the groundwater can be fed back through the scale value of the lifting rope at the wellhead/orifice.
Description
Technical Field
The invention belongs to the field of prevention and treatment water engineering, and particularly relates to a groundwater level monitoring device and an application method.
Background
Groundwater is one of the main threats for destroying geotechnical engineering stability, and is also a main cause for various engineering disaster accidents. In order to enhance the self-stabilization capability of geotechnical engineering and prevent collapse, landslide, piping and other damages caused by engineering instability, generally, drainage measures must be taken to eliminate potential safety hazards before the engineering reaches a certain height or a certain area. In the precipitation process, water level monitoring is often used for guiding precipitation work, evaluating precipitation effect and is of great importance to water hazard control.
At present, many methods for measuring the underground water level in engineering practice are available, but almost all the methods are in a single manual operation mode, namely, a tool is placed once at intervals for measuring the water level once, the measuring tool is retracted after the water level is measured, and the measuring tool is carried for measuring when the water level is measured next time. The water measuring method is stiff and inconvenient to operate. Especially when the water-reducing and draining strength is high and the water level is fast, the method can not grasp the underground water level in time and can not meet the water-measuring requirement. Moreover, the labor intensity of water measurement is high, time and labor are wasted, the efficiency is low, the requirement of geotechnical engineering precipitation is difficult to be satisfied, and even the water measurement can become an obstacle for engineering construction.
Disclosure of Invention
The invention aims to provide a groundwater level monitoring device capable of feeding back real-time groundwater level and an application method thereof.
The invention provides a groundwater level monitoring device, which adopts the following technical scheme: the device comprises a counterweight box, a buoyancy frame, a lifting rope and a lifting rope driving device, wherein the buoyancy frame slidably penetrates through the counterweight box, the upper end of the counterweight box extends out of at least one pair of brackets capable of supporting the buoyancy frame, the lifting rope is provided with scales, the lower end of the lifting rope is fixed on the brackets, the upper end of the lifting rope is fixed on the lifting rope driving device, and a force sensor is arranged on the lifting rope driving device.
When the technical scheme is implemented, the counterweight box is a cuboid box body, a vertical sleeve is arranged at the center of the counterweight box body, or a mounting groove is formed in the center of the counterweight box body in the length direction.
When the technical scheme is implemented, the buoyancy frame is of an I-shaped structure, and the height of the web member/web plate is larger than that of the counterweight box.
When the technical scheme is implemented, the bracket is an inverted L-shaped frame and is arranged towards the inner cavity of the counterweight box through the horizontal arm.
When the technical scheme is implemented, the web members/webs of the buoyancy frame penetrate through the counterweight box, and the upper wing plate can be supported by the horizontal arm of the bracket.
When the technical scheme is implemented, the lifting rope driving device is a miniature winch or a belt transmission device or a chain transmission device, and the belt rotation device and a driven wheel of the chain transmission device are coaxially connected with a rope winding wheel.
When the technical scheme is implemented, the hanging rope comprises a hanging rope and at least two connecting ropes at the lower ends of the hanging rope, the scales are arranged on the hanging rope, the middle part of the connecting rope is connected with the supporting rod, and the connecting rope part below the supporting rod is kept in a vertical state.
When the technical scheme is implemented, the tail ends of the connecting ropes are respectively fixed with the hanging rings on the horizontal arms of the brackets, and the upper ends of the hanging ropes are wound on the winding drum of the miniature winding machine or the rope winding wheel.
When the technical scheme is implemented, the force sensor is arranged on the winding drum and the rope winding wheel.
The method for judging the groundwater level by using the groundwater level monitoring device provided by the invention comprises the following steps:
(1) Installing a lifting rope driving device at a wellhead/orifice, and installing a force sensor on the lifting rope driving device;
(2) Placing a balancing weight into the balance weight box after the buoyancy frame and the balance weight box are assembled;
(3) Fixing two ends of the lifting rope;
(4) The lifting rope driving device works to release the rope, the balance weight box is released from the wellhead/orifice, and the force sensor feeds back the sum of the gravity of the balance weight box and the buoyancy frame;
(5) Observing feedback data of the force sensor, stopping the operation of the lifting rope driving device when the feedback data is reduced and a stable value is maintained, stopping the lowering of the lifting rope, enabling the lower wing plate of the buoyancy frame to be in contact with the surface of groundwater at the moment, enabling the upper wing plate of the buoyancy frame to be lifted away from the bracket under the buoyancy action of water, and enabling the stable value fed back by the force sensor to be the gravity of the counterweight box at the moment;
(6) Recording the scale value at the highest position of the suspension rope at the moment, and calculating the water level of the initial groundwater according to the scale value;
(7) When the water level descends, the buoyancy frame loses the buoyancy of water and falls onto the bracket under the action of gravity of the buoyancy frame, at the moment, the force sensor transmits an electric signal to the lifting rope driving device, the lifting rope driving device works to enable the lifting rope to descend until the lower wing plate of the buoyancy frame contacts the water surface after descending, and the lifting rope driving device automatically stops working;
(8) And (3) recording a scale value at the highest position of the suspension rope, wherein the difference between the scale value and the scale value recorded in the step (6) is the water level descending height, so that the water level of the underground water at the moment can be known.
In the process of the monitoring device descending from the wellhead/orifice, when the buoyancy frame is not contacted with the water surface, the data fed back by the force sensor is the sum of the weights of the counterweight box and the buoyancy frame, and when the buoyancy frame is contacted with the water surface, the data fed back by the force sensor is the weight of the counterweight box, so that the lifting rope driving device can start to work and stop working according to the data fed back by the force sensor, the buoyancy frame can automatically follow the water surface of the groundwater, and the real-time water level of the groundwater can be fed back through the scale value of the lifting rope at the wellhead/orifice.
Drawings
Fig. 1 is a schematic view illustrating a state of a weight box and a buoyancy frame during a lowering process according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a schematic view showing a state where the measuring device is lowered to contact with the initial water surface in the present embodiment.
Fig. 4 is an enlarged schematic view of a portion B in fig. 3.
Detailed Description
As shown in fig. 1, the groundwater level monitoring device disclosed in this embodiment includes a weight box, a buoyancy frame, a lifting rope and a lifting rope driving device.
The counterweight box 1 is a cuboid box body, the top plate is a movable plate, and the tops of two ends of the box body in the length direction are symmetrically connected with a pair of brackets 2.
The bracket 2 is of an L-shaped structure, the vertical arm is welded and fixed with the side wall of the weight box 1, and the horizontal arm faces the inner cavity of the weight box.
The bracket 2 is used for supporting the buoyancy frame 3 and fixing the lower end of the lifting rope.
The buoyancy frame 3 is of an I-shaped structure, the width of a lower wing plate is larger than that of an upper wing plate, the width of the upper wing plate is smaller than that of the counterweight box 1, and a web member structure or a web plate structure is adopted between the upper wing plate and the lower wing plate.
When the buoyancy frame 3 adopts a web member structure, a vertical sleeve is arranged at the central position of the counterweight box 1 to serve as a web member mounting structure.
When the buoyancy frame 3 adopts a web plate structure, the central surface of the upper wing plate and the lower wing plate of the counterweight box in the length direction is provided with a mounting groove, and the two sides of the box body corresponding to the mounting groove are provided with a baffle plate.
The distance between the upper wing plate and the lower wing plate of the buoyancy frame 3 is larger than the height of the counterweight box 1, and after the buoyancy frame is installed with the counterweight box, the upper wing plate and the lower wing plate are positioned outside the counterweight box, and the upper position and the lower position can be changed.
Under the gravity action of the buoyancy frame 3, the upper wing plate is supported by the horizontal arm of the bracket 2.
The hoist rope driving means 4 may employ a miniature hoist of the outsource type or employ a miniature belt transmission/chain transmission.
The hoist rope driving means 4 in this embodiment adopts a micro belt transmission device, the driven wheel of which is coaxially connected to the sheave 41.
A force sensor (not shown in the figure) is arranged on the rope winding wheel, and the force sensor feeds back the detected force data to the main control terminal.
The suspension string comprises a suspension string 5 and at least two connecting strings 6 at its lower end.
The suspension rope 5 is provided with scales which can reflect the descending length of the suspension rope, the middle part of the connection rope is connected with a stay bar 7, and the connection rope part below the stay bar is kept in a vertical state.
The horizontal arm of the bracket 2 is provided with a hanging ring for fixedly connecting the lower end of the rope 6.
The upper end of the suspension rope 5 is wound around the rope reel 41 after being fixed to the rope reel 41.
When the device is installed, the lifting rope driving device is installed at the wellhead/orifice, the balancing weight is placed in the balancing weight box, two ends of the lifting rope are respectively fixed, and at the moment, the buoyancy frame is hung on the bracket under the action of gravity of the buoyancy frame. After that, the assembly of the weight box and the buoyancy frame can be lowered.
When the rope is put down, the motor of the belt transmission device works, so that the rope winding wheel rotates anticlockwise to put down the rope, the counterweight box and the buoyancy frame are lowered, and in the lowering process, the data fed back by the force sensor are the sum of the weights of the counterweight box and the buoyancy frame.
When the feedback data of the force sensor is reduced and a stable value is maintained, the motor stops working to stop the lifting rope from being lowered, and at the moment, the lower wing plate of the buoyancy frame is in contact with the surface of the groundwater.
Under the buoyancy action of water, the upper wing plate of the buoyancy frame rises to leave the bracket, so that the stable value fed back by the force sensor is the gravity of the counterweight box.
Because the lower wing plate of the buoyancy frame is contacted with the water surface of the groundwater, the water is firstly lowered into place, and the scale value at the highest position of the suspension rope at the moment is recorded, so that the water level of the initial groundwater can be calculated. A camera may be installed at the wellhead/port to record the scale value at the highest position of the hanging rope.
When the water level descends, the buoyancy frame loses buoyancy of water and falls onto the bracket under the action of gravity of the buoyancy frame, at the moment, the force sensor transmits an electric signal to the motor of the belt transmission device, the motor starts to work, the rope is wound around the rope pulley to unwind until the lower wing plate of the buoyancy frame contacts the water surface after the buoyancy frame descends, and the motor stops working.
From the structure of the device and the process of monitoring the groundwater level, the following steps are known:
the belt driving device works and is associated with the weight change of the suspended object monitored by the force sensor, namely, when the data monitored by the force sensor is the sum of the weights of the counterweight box and the buoyancy frame, the belt driving device works and releases ropes, and the belt driving device stops working until the data monitored by the force sensor is the weight of the counterweight box, and at the moment, the lower wing plate of the buoyancy frame is in contact with the water surface. In short, the device can automatically follow and measure the water surface of the underground water, so that the real-time water level of the underground water can be fed back.
Claims (10)
1. Groundwater level monitoring devices, its characterized in that: the device comprises a counterweight box, a buoyancy frame, a lifting rope and a lifting rope driving device, wherein the buoyancy frame slidably penetrates through the counterweight box, the upper end of the counterweight box extends out of at least one pair of brackets capable of supporting the buoyancy frame, the lifting rope is provided with scales, the lower end of the lifting rope is fixed on the brackets, the upper end of the lifting rope is fixed on the lifting rope driving device, and a force sensor is arranged on the lifting rope driving device.
2. The groundwater level monitoring device of claim 1 wherein: the counterweight box is a cuboid box body, a vertical sleeve is arranged at the center of the counterweight box body, or a mounting groove is formed in the center surface of the counterweight box body in the length direction.
3. The groundwater level monitoring device of claim 1 wherein: the buoyancy frame is of an I-shaped structure, and the height of web members/webs of the buoyancy frame is larger than that of the counterweight box.
4. A groundwater level monitoring device according to claim 3, wherein: the bracket is an inverted L-shaped frame and is arranged towards the inner cavity of the counterweight box through a horizontal arm.
5. The groundwater level monitoring device of claim 4, wherein: the web members/webs of the buoyancy frame pass through the weight boxes and upper wings can be supported by the horizontal arms of the brackets.
6. The groundwater level monitoring device of claim 4, wherein: the lifting rope driving device is a miniature winch, a belt driving device or a chain driving device, and the belt rotating device and a driven wheel of the chain driving device are coaxially connected with a rope winding wheel.
7. The groundwater level monitoring device of claim 6 wherein: the lifting rope comprises a hanging rope and at least two connecting ropes at the lower end of the hanging rope, the scales are arranged on the hanging rope, the middle part of the connecting rope is connected with a supporting rod, and the connecting rope part below the supporting rod is kept in a vertical state.
8. The groundwater level monitoring device of claim 7 wherein: the tail ends of the connecting ropes are respectively fixed with hanging rings on the horizontal arms of the brackets, and the upper ends of the hanging ropes are wound on a winding drum of the miniature winding machine or on the rope winding wheel.
9. The groundwater level monitoring device of claim 8 wherein: the force sensor is arranged on the winding drum and the rope winding wheel.
10. A method for feeding back real-time groundwater level using the groundwater level monitoring device according to claim 1, comprising the steps of:
(1) Installing a lifting rope driving device at a wellhead/orifice, and installing a force sensor on the lifting rope driving device;
(2) Placing a balancing weight into the balance weight box after the buoyancy frame and the balance weight box are assembled;
(3) Fixing two ends of the lifting rope;
(4) The lifting rope driving device works to release the rope, the balance weight box is released from the wellhead/orifice, and the force sensor feeds back the sum of the gravity of the balance weight box and the buoyancy frame;
(5) Observing feedback data of the force sensor, stopping the operation of the lifting rope driving device when the feedback data is reduced and a stable value is maintained, stopping the lowering of the lifting rope, enabling the lower wing plate of the buoyancy frame to be in contact with the surface of groundwater at the moment, enabling the upper wing plate of the buoyancy frame to be lifted away from the bracket under the buoyancy action of water, and enabling the stable value fed back by the force sensor to be the gravity of the counterweight box at the moment;
(6) Recording the scale value at the highest position of the suspension rope at the moment, and calculating the water level of the initial groundwater according to the scale value;
(7) When the water level descends, the buoyancy frame loses the buoyancy of water and falls onto the bracket under the action of gravity of the buoyancy frame, at the moment, the force sensor transmits an electric signal to the lifting rope driving device, the lifting rope driving device works to enable the lifting rope to descend until the lower wing plate of the buoyancy frame contacts the water surface after descending, and the lifting rope driving device automatically stops working;
(8) And (3) recording a scale value at the highest position of the suspension rope, wherein the difference between the scale value and the scale value recorded in the step (6) is the water level descending height, so that the water level of the underground water at the moment can be known.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901794.8A CN116818043A (en) | 2023-07-21 | 2023-07-21 | Groundwater level monitoring device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901794.8A CN116818043A (en) | 2023-07-21 | 2023-07-21 | Groundwater level monitoring device and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116818043A true CN116818043A (en) | 2023-09-29 |
Family
ID=88114502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310901794.8A Pending CN116818043A (en) | 2023-07-21 | 2023-07-21 | Groundwater level monitoring device and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116818043A (en) |
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2023
- 2023-07-21 CN CN202310901794.8A patent/CN116818043A/en active Pending
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