Pressurizing circulating water bag water interception system and method for CT lock catch steel pipe pile cofferdam

Abstract

The invention relates to the technical field of water interception construction operation, in particular to a pressurized circulating water bag water interception system and method for a CT lock catch steel pipe pile cofferdam. The pressurized circulating water bag water interception system comprises a water interception system, a communication system and an automatic water pressure adjusting system; the water intercepting system is connected with the automatic water pressure adjusting system through the communicating system, and when the water intercepting capacity of the water intercepting system is reduced, the automatic water pressure adjusting system pressurizes the water intercepting system; according to the pressurized circulating water bag water interception system and method for the CT lock catch steel pipe pile cofferdam, the water interception effect of the single-layer steel pipe pile cofferdam can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of water cut-off construction operations, and in particular to a pressurized circulating water bag water cut-off system and method for a CT lock steel pipe pile cofferdam. Background Art

[0002] In the water interception operation of CT lock steel pipe pile cofferdam construction, the most commonly used method is to set up a double-layer steel pipe pile cofferdam to achieve a better water interception effect, but the cost of setting up a double-layer steel pipe pile cofferdam is high and the construction period is long. Another method is to set up a single-layer steel pipe pile cofferdam to intercept water. The common water interception measures of single-layer steel pipe pile cofferdams include adding sandbags between the two CT locks, so as to block the gaps between the CT locks with sandbags to achieve the purpose of water interception. However, due to the gaps in the sandbags themselves and the poor ductility of the sandbags, after the sandbags are put into the gaps of the CT locks, there are still certain gaps in the CT locks, resulting in poor water interception effect. In addition to sandbag water interception, a common method of water interception in CT lock steel pipe pile cofferdam construction is to seal the gaps between CT locks by pouring marine concrete, a filling material mixed with cementitious materials, sand and soil, into the CT locks, thereby achieving the effect of water interception. Although this method has a good water interception effect, after the marine concrete solidifies, it becomes more difficult to disassemble and pull out the CT locks, and may even cause the CT locks to be scrapped, increasing the burden on the construction unit in terms of construction cost and construction period. In addition to the above two methods, adding water bags into the gaps of CT lock buckles to seal the gaps in the CT lock buckles through the good ductility of the water bags to achieve the purpose of water interception of the steel pipe pile cofferdam is also a method. However, the disadvantage of this method is that in the construction of lock steel pipe pile cofferdams involving a water depth of more than 5m, due to the increase in the driving depth of the steel pipe piles, the pressure at the bottom of the cofferdam is too large, far exceeding the pressure of the water bag itself in the gap of the CT lock buckle, causing the water bag itself to deform, thereby causing water outside the cofferdam to enter the cofferdam through the gaps caused by the deformation of the water bag, which is also easy to affect the water interception effect of the steel pipe pile cofferdam. Summary of the invention

[0003] In order to solve the technical problems existing in the prior art and thus improve the water interception effect of a single-layer steel pipe pile cofferdam, the present application provides a pressurized circulating water bag water interception system and method for a CT lock steel pipe pile cofferdam.

[0004] In the first aspect, the present invention provides a pressurized circulating water bag water cut-off system for a CT lock steel pipe pile cofferdam, which adopts the following technical solution:

[0005] A pressurized circulating water bag water cut-off system for a CT lock steel pipe pile cofferdam comprises a water cut-off system, a connecting system and an automatic water pressure regulating system. The water cut-off system is arranged in a gap of the CT lock, and the water cut-off system and the automatic water pressure regulating system are connected through the connecting system. When the water cut-off capacity of the water cut-off system decreases, the automatic water pressure regulating system pressurizes the water cut-off system.

[0006] Preferably, the water cut-off system comprises a water cut-off water bag and a counterweight block, and the counterweight block is arranged at the bottom of the water cut-off water bag.

[0007] Preferably, the communication system includes a water bag communicating device, the water bag communicating device includes a main pipeline and multiple branch pipelines connected to the main pipeline, the main pipeline is connected to the automatic water pressure regulating system, and the multiple branch pipelines are respectively connected to multiple water-cutting water bags.

[0008] Preferably, the automatic water pressure regulating system includes a water pressure sensor, a pressure pump, a pressure pump pipe, an intelligent control system and a signal base station. The pressure pump, the intelligent control system and the signal base station are all arranged on a construction platform outside the cofferdam. The pressure pump, the pressure pump pipe and the water bag communicating vessel are connected in sequence. The water pressure sensor is used to sense the water pressure in the water-cutting water bag. The water pressure sensor, the intelligent control system and the signal base station are signal-connected.

[0009] Preferably, the booster pump is a D-type horizontal multi-stage centrifugal pump.

[0010] Preferably, a plurality of water pressure sensors are provided.

[0011] Preferably, the water pressure sensor includes a sensor body and a sensor element, the sensor body is connected to the sensor element by wire, the sensor body of the water pressure sensor is arranged on the top of the steel pipe pile, and the sensor element of the water pressure sensor is arranged in a water-cutting water bag.

[0012] In the second aspect, the present invention provides a pressurized circulating water bag water interception method for a CT lock steel pipe pile cofferdam, which adopts the following technical solution:

[0013] A method for cutting off water with a pressurized circulating water bag of a CT locking steel pipe pile cofferdam, using the pressurized circulating water bag water cutting system of the CT locking steel pipe pile cofferdam, comprises the following steps:

[0014] Step 1: Use high-pressure water to clean the mud and sand in the CT lock buckle to the depth where water needs to be cut off, then set a counterweight at the bottom of the water-cutting bag, lower the water-cutting bag to the bottom of the gap of the CT lock buckle, and arrange a water pressure sensor;

[0015] Step 2: Use a water bag communicating device to connect multiple water-cutting water bags, and connect the water bag communicating device to a D-type horizontal multi-stage centrifugal pump to fill the water-cutting water bags with water;

[0016] Step 3: Set up the intelligent control system, signal base station and D-type horizontal multistage centrifugal pump on the construction platform outside the cofferdam, connect the water pressure sensor, intelligent control system and D-type horizontal multistage centrifugal pump and debug them;

[0017] Step 4: Pressurize the entire pressurized circulating water bag water cut-off system and test the sealing performance;

[0018] Step 5: Debug the water pressure sensor to feedback the water pressure inside the water-blocking water bag, and feed back the sensing signal to the computer of the on-site manager through the signal base station to monitor the water pressure inside the water-blocking water bag;

[0019] Step 6: Pump water from the cofferdam and observe the water interception effect of the cofferdam;

[0020] Step 7: When the water interception effect of the cofferdam is insufficient, use the intelligent control system to control the D-type horizontal multi-stage centrifugal pump to pump water into the water interception bag to increase the internal pressure of the water interception bag and improve the water interception effect.

[0021] The beneficial effects of the present invention are:

[0022] The present invention not only saves the construction cost of the CT locking steel pipe pile cofferdam, improves the water interception effect of the CT locking steel pipe pile cofferdam, but also is easy to install and dismantle, reduces the construction difficulty of on-site workers in the construction of the CT locking steel pipe pile cofferdam, and can monitor the water pressure inside the water interception water bag in real time, so as to use the intelligent control system to automatically control the D-type horizontal multi-stage centrifugal pump according to the water pressure change inside the water interception water bag, and pressurize the water interception water bag, thereby ensuring the water interception effect of the CT locking steel pipe pile cofferdam. The present invention has good adaptability and is particularly suitable for water interception of deep-water cofferdams. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a top view schematic diagram of a cofferdam provided with a pressurized circulating water bag water interception system in an embodiment of the present application;

[0024] Figure 2 It is a partial schematic diagram of a cofferdam provided with a pressurized circulating water bag water interception system in an embodiment of the present application;

[0025] Figure 3 is a cross-sectional schematic diagram of a water interception system in an embodiment of the present application;

[0026] Figure 4 It is a partial cross-sectional view of a cofferdam provided with a pressurized circulating water bag water interception system in an embodiment of the present application.

[0027] Explanation of the reference numerals: 1. water-cutting water bag; 2. counterweight block; 3. water bag connecting vessel; 4. water pressure sensor. DETAILED DESCRIPTION

[0028] The following will be combined with the attached Figure 1 -Attached Figure 4 The present invention is further illustrated by the following embodiments.

[0029] This embodiment discloses a pressurized circulating water bag water cut-off system for a CT locking steel pipe pile cofferdam.

[0030] Reference Figures 1 to 4 The pressurized circulating water bag water cut-off system of the CT lock steel pipe pile cofferdam includes a water cut-off system, a connecting system and an automatic water pressure regulating system. The water cut-off system consists of a water cut-off water bag 1 and a counterweight block 2. The counterweight block 2 is arranged at the bottom of the water cut-off water bag 1. Under the action of the gravity of the counterweight block 2, the water cut-off water bag 1 is accelerated to the bottom of the gap of the CT lock and remains stable at the bottom.

[0031] Reference Figures 1 to 4 The connecting system is composed of a water bag communicating device 3, which includes a main pipeline and multiple branch pipelines connected to the main pipeline. The main pipeline is connected to the water pressure automatic regulating system, and the multiple branch pipelines are respectively connected to multiple water-cutting water bags 1. The setting of the water bag communicating device 3 facilitates the use of the water pressure automatic regulating system to synchronously adjust the water pressure of multiple water-cutting water bags 1.

[0032] Reference Figures 1 to 4 The water pressure automatic regulating system is composed of a water pressure sensor 4, a D-type horizontal multistage centrifugal pump, a pressure pump pipe, an intelligent control system and a signal base station. The D-type horizontal multistage centrifugal pump, the intelligent control system and the signal base station are all arranged on the construction platform outside the cofferdam. The D-type horizontal multistage centrifugal pump, the pressure pump pipe and the main pipeline of the water bag communicating device 3 are connected in sequence, so that the D-type horizontal multistage centrifugal pump can pump water into the water-cutting water bag 1 to achieve pressurization. There are multiple water pressure sensors 4, and the water pressure sensor 4 includes a sensor body and a sensor element. The sensor body is connected to the sensor element line. The sensor body of the water pressure sensor 4 is arranged on the top of the steel pipe pile, and the sensor element of the water pressure sensor 4 is arranged in the water-cutting water bag 1. The water pressure sensor 4 is used to sense the water pressure in the water-cutting water bag 1. In the remaining embodiments, the water pressure sensor 4 can also be directly installed in the water-cutting water bag 1, as long as the water pressure sensing inside the water-cutting water bag 1 can be achieved. The water pressure sensor 4, the intelligent control system and the signal base station are connected by signals. The water pressure sensor 4 in the water-blocking water bag 1 feeds back the water pressure change inside the water-blocking water bag 1 caused by the water level change in the water area where the cofferdam is located to the intelligent control system, and then feeds back to the on-site management personnel's computer through the signal base station, so as to monitor the water pressure inside the water-blocking water bag 1 in real time. If necessary, the on-site management personnel controls the D-type horizontal multi-stage centrifugal pump to pump water through the intelligent control system to increase the pressure inside the water-blocking water bag 1 and improve the water-blocking effect.

[0033] To sum up, the implementation principle of the present invention is: first, a water-cutting water bag 1 is added into the gap of the CT lock buckle, and the gap in the CT lock buckle is blocked by the good ductility of the water-cutting water bag 1, so as to achieve the purpose of water cutoff of the steel pipe pile cofferdam; secondly, if the construction of a CT lock buckle steel pipe pile cofferdam with a water depth exceeding 5m is involved, due to the increase in the driving depth of the steel pipe piles, the pressure at the bottom of the cofferdam is too large, far exceeding the pressure of the water-cutting water bag 1 itself, causing the water-cutting water bag 1 to deform. At this time, the water pressure sensor 4 can sense the water pressure change in the water-cutting water bag 1, and remind the staff to pressurize the water-cutting water bag 1 in time to improve the water cutoff effect. Therefore, compared with the prior art, the present invention not only saves the construction cost of the CT locking steel pipe pile cofferdam, improves the water interception effect of the CT locking steel pipe pile cofferdam, but also is easy to install and dismantle, reducing the construction difficulty of on-site workers in the construction of the CT locking steel pipe pile cofferdam, and can monitor the internal water pressure of the water interception water bag 1 in real time, so as to use the intelligent control system to automatically control the D-type horizontal multi-stage centrifugal pump according to the water pressure changes inside the water interception water bag 1, and pressurize the water interception water bag 1, thereby ensuring the water interception effect of the CT locking steel pipe pile cofferdam. The present invention has good adaptability and is particularly suitable for water interception of deepwater cofferdams.

[0034] This embodiment also discloses a method for intercepting water using a pressurized circulating water bag of a CT locking steel pipe pile cofferdam.

[0035] Reference Figures 1 to 4 The pressurized circulating water bag water interception method of the CT lock steel pipe pile cofferdam includes the following steps:

[0036] Step 1: Use high-pressure water to clean the mud and sand in the CT lock buckle to the depth where water needs to be cut off, then set a counterweight 2 at the bottom of the water-cutting water bag 1, lower the water-cutting water bag 1 to the bottom of the gap of the CT lock buckle, and arrange a water pressure sensor 4;

[0037] Step 2: Use the water bag communicating device 3 to connect multiple water-cutting water bags 1, and connect the water bag communicating device 3 with a D-type horizontal multi-stage centrifugal pump to fill the water-cutting water bags 1 with water;

[0038] Step 3: Set up the intelligent control system, signal base station and D-type horizontal multistage centrifugal pump on the construction platform outside the cofferdam, connect the water pressure sensor 4, intelligent control system and D-type horizontal multistage centrifugal pump and debug them;

[0039] Step 4: Pressurize the entire pressurized circulating water bag water cut-off system and test the sealing performance;

[0040] Step 5: Debug the feedback of the water pressure sensor 4 on the water pressure inside the water-blocking water bag 1, and feed back the sensing signal to the computer of the on-site manager through the signal base station to monitor the water pressure inside the water-blocking water bag 1;

[0041] Step 6: Pump water from the cofferdam and observe the water interception effect of the cofferdam;

[0042] Step 7: When the water interception effect of the cofferdam is insufficient, the intelligent control system is used to control the D-type horizontal multi-stage centrifugal pump to pump water into the water interception water bag 1 to increase the pressure inside the water interception water bag 1 and improve the water interception effect.

[0043] The above are all preferred embodiments of the present invention, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressurized circulating water bag water cut-off system for a CT lock steel pipe pile cofferdam, characterized in that: It includes a water cutoff system, a connecting system and an automatic water pressure regulating system. The water cutoff system is arranged in the gap of the CT lock buckle. The water cutoff system and the automatic water pressure regulating system are connected through the connecting system. When the water cutoff capacity of the water cutoff system decreases, the automatic water pressure regulating system pressurizes the water cutoff system.

2. According to claim 1, a pressurized circulating water bag water cut-off system for a CT locking steel pipe pile cofferdam is characterized in that: The water cut-off system comprises a water cut-off water bag (1) and a counterweight block (2), wherein the counterweight block (2) is arranged at the bottom of the water cut-off water bag (1).

3. According to claim 2, a pressurized circulating water bag water cut-off system for a CT locking steel pipe pile cofferdam is characterized in that: The communication system comprises a water bag communicating device (3), wherein the water bag communicating device (3) comprises a main pipeline and a plurality of branch pipelines connected to the main pipeline, the main pipeline is connected to the automatic water pressure regulating system, and the plurality of branch pipelines are respectively connected to a plurality of the water-blocking water bags (1).

4. The pressurized circulating water bag water cut-off system of the CT locking steel pipe pile cofferdam according to claim 3 is characterized in that: The water pressure automatic regulating system comprises a water pressure sensor (4), a pressure pump, a pressure pump pipe, an intelligent control system and a signal base station. The pressure pump, the intelligent control system and the signal base station are all arranged on a construction platform outside the cofferdam. The pressure pump and the pressure pump pipe are connected to the water bag connecting vessel (3) in sequence. The water pressure sensor (4) is used to sense the water pressure in the water-blocking water bag (1). The water pressure sensor (4), the intelligent control system and the signal base station are connected by signal.

5. The pressurized circulating water bag water cut-off system of the CT locking steel pipe pile cofferdam according to claim 4 is characterized in that: The booster pump is a D-type horizontal multistage centrifugal pump.

6. The pressurized circulating water bag water cut-off system of the CT locking steel pipe pile cofferdam according to claim 4 is characterized in that: A plurality of water pressure sensors (4) are provided.

7. The pressurized circulating water bag water cut-off system for the CT locking steel pipe pile cofferdam according to claim 4 is characterized by: The water pressure sensor (4) comprises a sensor body and a sensor element, the sensor body being connected to the sensor element by wire, the sensor body of the water pressure sensor (4) being arranged on the top of the steel pipe pile, and the sensor element of the water pressure sensor (4) being arranged in the water interception bag (1).

8. A method for cutting off water with a pressurized circulating water bag of a CT locking steel pipe pile cofferdam, using the pressurized circulating water bag water cutting system of a CT locking steel pipe pile cofferdam as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Use high-pressure water to clean the mud and sand in the CT lock buckle to the depth required for water cutoff, then set a counterweight (2) at the bottom of the water cutoff bag (1), lower the water cutoff bag (1) to the bottom of the gap of the CT lock buckle, and arrange a water pressure sensor (4); Step 2: using a water bag communicating device (3) to connect the plurality of water-blocking water bags (1), and connecting the water bag communicating device (3) to a D-type horizontal multi-stage centrifugal pump to inject water into the water-blocking water bags (1); Step 3: Install the intelligent control system, signal base station and D-type horizontal multistage centrifugal pump on the construction platform outside the cofferdam, connect the water pressure sensor (4), intelligent control system and D-type horizontal multistage centrifugal pump and debug them; Step 4: Pressurize the entire pressurized circulating water bag water cut-off system and test the sealing performance; Step 5: Debug the water pressure sensor (4) to feedback the water pressure inside the water-blocking water bag (1), and feed back the sensing signal to the computer of the on-site manager through the signal base station to monitor the water pressure inside the water-blocking water bag (1); Step 6: Pump water from the cofferdam and observe the water interception effect of the cofferdam; Step 7: When the water interception effect of the cofferdam is insufficient, the intelligent control system is used to control the D-type horizontal multi-stage centrifugal pump to pump water into the water interception bag (1), thereby increasing the pressure inside the water interception bag (1) and improving the water interception effect.

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