CN209842423U - Excavation canal lining plate lower pressure bearing water fine regulation and control device - Google Patents
Excavation canal lining plate lower pressure bearing water fine regulation and control device Download PDFInfo
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- CN209842423U CN209842423U CN201921072302.4U CN201921072302U CN209842423U CN 209842423 U CN209842423 U CN 209842423U CN 201921072302 U CN201921072302 U CN 201921072302U CN 209842423 U CN209842423 U CN 209842423U
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Abstract
The utility model provides a dig meticulous regulation and control device of confined water under channel lining cutting board, including the immersible pump, hydraulic sensor, the water pump inlet tube, the water pump outlet pipe, the sealing plug, a controller, monitor terminal, the immersible pump is located below the surface of water in the cofferdam, water pump inlet tube and water pump outlet pipe are connected with the immersible pump, channel lining cutting board bottom is equipped with the wash port, the water pump inlet tube is connected and forms sealedly with the wash port of channel lining cutting board bottom through the sealing plug parcel with hydraulic sensor, the immersible pump passes through first cable and is connected with the controller, hydraulic sensor passes through the second cable and is connected with the controller, the controller passes through the third cable and is connected. The utility model discloses small movable, the simple installation arranges in the cofferdam when having the pressure-bearing water channel to overhaul under the cutting lining, can realize the meticulous regulation and control of water pressure under the lining board to guarantee the safety and stability of maintenance phase lining board.
Description
Technical Field
The utility model relates to a south water transfers excavation canal sections such as central line engineering to north and overhauls the field, specifically is a meticulous regulation and control device of confined water under excavation canal lining board.
Background
The confined water seepage control is an important guarantee for the stability and safety of the lining plates of the excavation canal sections such as the central line of the north-south water diversion, and is one of the key safety engineering measures for the stability and safety of the canal lining plates and the canal slopes in the construction, operation and maintenance periods of the excavation canal sections. Under the normal condition, a digging channel section of underground confined water is provided, a longitudinal and transverse permeable plastic pipe network is laid in a sand cushion layer under a lining plate of the channel, a check valve is arranged at the cross part of the pipe network at the slope toe or the middle of a channel bottom plate, and the automatic drainage and pressure reduction of the underground confined water are realized through the check valve, so that the lining plate is ensured not to have the anti-floating stability problem; in the engineering operation, if the pressure of canal base confined water is suddenly increased and the check valve can not effectively drain water and reduce pressure in time, the anti-floating instability damage of the lining plate can be generated, and the damage phenomenon found in the current south-water north-adjustment central line engineering mostly belongs to the problem.
Current water delivery channel maintenance typically utilizes cofferdams or check gates to drain the canal water creating a wide area dry-land maintenance environment requiring the channel to interrupt water delivery. Along with the operation of the central line engineering in the north-south water transfer, the overhauling and maintenance requirements of the channels are increased day by day; the central line engineering of the south-to-north water regulation is an important water source along the line and in cities such as Beijing, and the central line engineering of the south-to-north water regulation cannot be maintained without water interruption, which is also a special requirement for the operation and maintenance of the central line of the south-to-north water regulation. The water depth of the central line channel of the south-to-north water diversion is usually 5 m-8 m, and the maintenance of the lining plate for the damaged channel slope and the channel bottom can only adopt underwater maintenance at present, and the method has the defects of high underwater maintenance construction difficulty and high cost. In addition, cofferdam water retaining is adopted but water in the cofferdam is not pumped, a still water cofferdam is formed and then underwater maintenance is carried out, and the mode has the defects that the method can only be used for maintaining the lining plate of the canal slope with shallow part and cannot be used for maintaining the water level at the bottom of the canal deeply. If the local dry land cofferdam is formed under the condition that the water is not cut off from the channel to maintain the channel slope and the lining plate at the bottom of the channel, the channel section with the excavated channel section and possibly bearing pressure water is bound to face the lining anti-floating stability problem. In the excavation canal section where confined water possibly exists, the existing seepage control technology is to automatically drain and reduce pressure by adopting a check valve, or to arrange deep wells at intervals outside the canal, and during maintenance, the water can be pumped by the deep wells to reduce the water drainage pressure of the lining plate of the excavation section. The disadvantage of this method is that the check valve is usually out of order at the canal section needing to be repaired, and the cofferdam pumping will cause the instability of the lining plate due to the excessive pressure difference between the upper and lower water. In addition, if a deep well on the outer side of the channel is used for pumping water and reducing pressure, a large amount of water needs to be pumped for a long time before and during maintenance, and a reliable monitoring means needs to be adopted to monitor the water pressure change of the lining plate, which is difficult to realize in practice. To sum up, the problems of the existing confined water seepage control device are mainly as follows:
1. the conventional check valve is generally failed in a channel section needing to be repaired, and a lining plate is unstable in the cofferdam pumping process.
2. The deep well outside the conventional channel pumps water and reduces pressure, and is time-consuming and difficult to monitor the change of the water pressure of the lining plate.
3. When the lining plates are maintained underwater in the cofferdam, the construction difficulty is high, the cost is high, and the construction of the canal bottom cannot be realized at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fine regulating and controlling device for the lower confined water of the cutting channel lining plate, which solves the problem of the anti-floating instability of the lining plate which possibly occurs in the dry land maintenance construction process of the cofferdam under the condition of uninterrupted water transmission of the cutting channel section of south-to-north water; the water pump is controlled to start and stop according to the safety threshold of the confined water below the lining plate, the water pressure sensor can realize the precision control of the water pressure at the level of 1mm, the automatic real-time dynamic drainage and pressure reduction can be realized, and the safety and the stability of the lining plate during maintenance are ensured; the utility model discloses also for solving the special fortune dimension environment that south water north transfer central line can not cut off the water supply maintenance and propose for the first time, filled domestic and foreign blank.
The utility model provides a dig meticulous regulation and control device of confined water under channel lining board, including the immersible pump, a water pressure sensor, the water pump inlet tube, the water pump outlet pipe, the sealing plug, a controller, monitor terminal, the immersible pump is located below the surface of water in the cofferdam, water pump inlet tube and water pump outlet pipe are connected with the immersible pump, channel lining board bottom is equipped with the wash port, the water pump inlet tube is connected and forms sealedly with the wash port of channel lining board bottom through the sealing plug parcel with water pressure sensor, the immersible pump is connected with the controller through first cable, water pressure sensor passes through the second cable and is connected with the controller, the controller passes through the third cable.
Furthermore, the submersible pump is powered by a first cable connected with the controller, and the controller controls the submersible pump to start and stop according to a water pressure signal monitored by the water pressure sensor and a preset water pressure threshold value.
Furthermore, the sealing plug is a silica gel sleeve with a diameter slightly larger than a drain hole at the bottom of the canal lining plate, and can be completely embedded with the drain hole when being completely compressed.
The utility model discloses the device is small, and the simple installation for under the bushing block water pressure in the inside and outside certain limit of cofferdam obtains effective regulation and control, guarantees the bushing block safety and stability, makes under the uninterrupted water delivery condition cofferdam dry land maintenance canal bottom the bushing block become reality, and improves the work efficiency of the uninterrupted water maintenance of excavation canal section greatly.
Drawings
FIG. 1 is a schematic structural view of the device for finely regulating and controlling the confined water under the cutting canal lining plate of the utility model.
In the figure: 1-canal lining panels; 2-a submersible pump; 3-a water pressure sensor; 4-water inlet pipe of water pump; 5-sealing plug; 6-water outlet pipe of water pump; 7-cofferdam; 8-a first cable; 9-a second cable; 10-a third cable; 11-a controller; 12-monitoring terminal.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Please refer to fig. 1, the embodiment of the utility model provides a meticulous regulation and control device of confined water under excavation channel lining board, including immersible pump 2, hydraulic pressure sensor 3, water pump inlet tube 4, water pump outlet pipe 6, sealing plug 5, controller 11, monitor terminal 12, immersible pump 2 is located below the water level in cofferdam 7, water pump inlet tube 4 and water pump outlet pipe 6 are connected with immersible pump 2, channel lining board 1 bottom is equipped with the wash port, water pump inlet tube 4 is connected and forms sealedly with the wash port of channel lining board 1 bottom through sealing plug 5 parcel with hydraulic pressure sensor 3, immersible pump 2 is connected with controller 11 through first cable 8, hydraulic pressure sensor 3 is connected with controller 11 through second cable 9, controller 11 is connected with monitor terminal 12 through third cable 10. The sealing plug 3 is a silica gel sleeve with a diameter slightly larger than a drain hole at the bottom of the canal lining plate 1, and can be completely embedded with the drain hole when being completely compressed, and a water inlet of a water pump and a water pressure sensor 3 are arranged below the canal lining plate 1.
The submersible pump 2 is powered by a first cable 8 connected with a controller 11, the controller 11 controls the start and stop of the submersible pump 2 according to a water pressure signal monitored by a water pressure sensor 3 and a preset water pressure threshold value, operation data (operation time, current and voltage) of the submersible pump 2 are transmitted to the controller 11 through the first cable 8, the water pressure signal monitored in real time by the water pressure sensor 4 can be transmitted to the controller 11 through a second cable 9, and then the controller 11 transmits the water pump and sensor signals to a monitoring terminal 12 through a third cable 10; the monitoring terminal 12 can monitor and record the running state of the submersible pump 2 and the water pressure value at the bottom of the canal lining plate 1 in real time, and realize the precise automatic intelligent regulation and control of the confined water.
In one embodiment, the diameter of the submersible pump 2 is 3.5cm, the height is 10cm, the bottom of the pump is provided with a water inlet pipe orifice, the top water outlet pipe orifice is 2cm in diameter, the rated flow is 0.3L/s, and the submersible pump 2 is a main part for finely regulating and controlling the pressure-bearing water.
The accuracy of the water pressure sensed by the water pressure sensor 3 is 1mm level, the water supply and drainage of the canal lining plate 1 are isolated by the sealing plug 5, the water pressure sensor 3 below the canal lining plate 1 monitors the water pressure of the canal bottom plate, and when the water pressure is increased to the upper water pressure limit threshold set by the controller 11, the submersible pump 2 is automatically started to pump water until the water pressure of the water pressure sensor 3 is reduced to the lower water pressure limit threshold set by the controller 11 and is automatically stopped.
The controller 11 can be composed of an RTU and other control integrated circuits, receives a water pressure signal sent by the water pressure sensor 3, realizes automatic start and stop of the submersible pump 2 by a power supply of the RTU according to a preset water pressure threshold value, monitors the running states of the water pressure sensor 3 and the submersible pump 2 in real time in the whole process of the monitoring terminal 12, can remotely set the water pressure threshold value of the controller 11, and realizes high-precision automatic intelligent regulation and control of the confined water under the lining plate.
The utility model discloses the theory of operation does: when the water pressure of the canal lining plate 1 is increased or the cofferdam lining plate is maintained, the water pressure sensor 3 detects that the water pressure is greater than a preset water pressure threshold value, the controller 11 issues a submersible pump 2 starting command, the submersible pump 2 starts pumping water, and along with the reduction of the water pressure of the canal lining plate 1 in the pumping process, the water pressure sensor 3 continues to detect until the water pressure is lower than the preset water pressure threshold value, and the controller 11 issues a submersible pump 2 stopping command. When the water pressure of the canal lining plate 1 is increased to the upper limit threshold value, the process is repeated, the submersible pump 2 is started and stopped automatically in a reciprocating mode, and the process is also a process for finely regulating and controlling the confined water. In the automatic fine regulation and control process of the water pressure of the lining plate, the monitoring terminal 12 always monitors and records the working states of the submersible pump 2 and the water pressure sensor 3.
The utility model discloses make full use of seepage flow control principle, the accurate meticulous regulation and control device to 1mm level of flood peak pressure that can provide. The water pressure can be finely regulated and controlled within a certain variation range by setting different threshold values, and water pumps with different powers can be replaced to regulate and control the pressure-bearing water of channel bases of different channel sections. Compared with the prior art, the device has obvious advantages, and the device has small volume and simple and convenient installation, so that the water discharge pressure of the lining plate in a certain range inside and outside the cofferdam is effectively regulated, the safety and stability of the lining plate are ensured, the dry maintenance of the lining plate at the bottom of the cofferdam under the condition of uninterrupted water delivery becomes practical, and the working efficiency of uninterrupted water maintenance of the excavation ditch section is greatly improved; the pressure-bearing water fine regulation and control device is supplied with power by direct current low voltage, can be supplied with power by connecting a storage battery with a solar cell panel, is energy-saving and environment-friendly and is not influenced by power failure. The utility model discloses can solve the meticulous regulation and control problem of similar groundwater pressure, the whole period monitoring groundwater pressure changes to realize the meticulous regulation and control of groundwater pressure, application prospect is wide.
The above description is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a dig meticulous regulation and control device of confined water under canal lining board which characterized in that: including immersible pump (2), water pressure sensor (3), water pump inlet tube (4), water pump outlet pipe (6), sealing plug (5), controller (11), monitor terminal (12), immersible pump (2) are located below the water level in cofferdam (7), water pump inlet tube (4) and water pump outlet pipe (6) are connected with immersible pump (2), channel lining board (1) bottom is equipped with the wash port, water pump inlet tube (4) are connected and form sealedly with the wash port of channel lining board (1) bottom through sealing plug (5) parcel, immersible pump (2) are connected with controller (11) through first cable (8), water pressure sensor (3) are connected with controller (11) through second cable (9), controller (11) are connected with monitor terminal (12) through third cable (10).
2. The excavation channel lining plate lower confined water fine regulation and control device of claim 1, characterized in that: the submersible pump (2) is powered by a first cable (8) connected with the controller (11), and the controller (11) controls the submersible pump (2) to start and stop according to a water pressure signal monitored by the water pressure sensor (3) and a preset water pressure threshold value.
3. The excavation channel lining plate lower confined water fine regulation and control device of claim 1, characterized in that: the sealing plug (5) is a silica gel sleeve with a diameter slightly larger than a drain hole at the bottom of the canal lining plate (1), and can be completely embedded with the drain hole when being completely compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072302.4U CN209842423U (en) | 2019-07-10 | 2019-07-10 | Excavation canal lining plate lower pressure bearing water fine regulation and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072302.4U CN209842423U (en) | 2019-07-10 | 2019-07-10 | Excavation canal lining plate lower pressure bearing water fine regulation and control device |
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| CN209842423U true CN209842423U (en) | 2019-12-24 |
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| CN201921072302.4U Active CN209842423U (en) | 2019-07-10 | 2019-07-10 | Excavation canal lining plate lower pressure bearing water fine regulation and control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244790A (en) * | 2019-07-10 | 2019-09-17 | 长江水利委员会长江科学院 | Artesian water finely regulating device and method under a kind of excavation canal liner plate |
-
2019
- 2019-07-10 CN CN201921072302.4U patent/CN209842423U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244790A (en) * | 2019-07-10 | 2019-09-17 | 长江水利委员会长江科学院 | Artesian water finely regulating device and method under a kind of excavation canal liner plate |
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