A deep water foundation deformation stability real-time monitoring device based on acoustic wave transmission

Abstract

A kind of deep water foundation deformation stability real-time monitoring equipment based on acoustic wave transmission, comprising the following steps: burying sensor measures the settlement of foundation, pore water pressure and horizontal displacement signal;The measured data of sensor is transmitted to automatic measurement and control system storage by signal cable;Automatic measurement and control system transmit data to underwater wireless transmission system storage by signal cable;Underwater wireless transmission system transmits data to underwater launch transducer by signal cable;Underwater launch transducer converts digital signal into acoustic wave signal and emits to water receiving transducer;Water receiving transducer converts acoustic wave signal into digital signal and transmits to computer terminal, battery is powered by cable respectively, automatic measurement and control system, wireless transmission system host and underwater launch transducer.This application can achieve the purpose of deep water 40 m foundation deformation automation measurement and real-time data transmission by combining deep water foundation automatic monitoring technology and underwater acoustic wave wireless transmission technology.

Description

Technical Field

[0001] This invention relates to the field of deep-water foundation deformation and stability monitoring, and particularly to a real-time monitoring device for deep-water foundation deformation and stability based on acoustic wave transmission. Background Technology

[0002] Breakwaters, as man-made hydraulic structures, are mainly used to resist the impact of natural forces such as waves, silt, and ice, protect the stability of ports, coastlines, or other waters, and provide a safe berthing and operating environment for ships. They are an important part of ports.

[0003] With the growth of my country's demand for foreign economic and trade exchanges and the advancement of shipping technology, the scale and standards of port construction are constantly improving, developing towards a pattern of large-scale and deep-water ports, which in turn raises the requirements for the construction of breakwaters.

[0004] Currently, due to limited monitoring research on deep-water breakwater projects, limited monitoring time, and imperfect monitoring technology, there is even less research on monitoring the deformation stability of breakwater foundations under the coupled action of deep water and soft soil foundations. Furthermore, there are differences between indoor tests and model tests and actual engineering projects, resulting in an insufficient and inaccurate understanding of the deformation development law of soft soil foundations in deep-water breakwaters.

[0005] Existing methods for monitoring the deformation of deep-water breakwaters typically combine traditional measurement techniques with synthetic aperture radar (SAR). While traditional measurement technologies, such as leveling and GPS, can obtain high-precision deformation results, they require significant manpower and technical personnel. SAR, a coherent imaging radar operating in the microwave band, can acquire data over large areas, 24 / 7, and in all weather conditions, theoretically achieving millimeter-level accuracy. However, SAR technology has limitations in monitoring the foundation, failing to accurately obtain changes in foundation deformation parameters and pore water pressure. Summary of the Invention

[0006] To address the problems in existing deep-water monitoring technologies, this invention proposes a real-time monitoring device for the deformation and stability of deep-water foundations based on acoustic wave transmission. By combining automatic monitoring technology for deep-water foundations with underwater wireless acoustic wave transmission technology, it can achieve automated measurement and real-time data transmission of foundation deformation at a depth of 40 m.

[0007] A real-time monitoring device for the deformation and stability of deep-water foundations based on acoustic wave transmission is proposed, comprising sensors, signal cables, a large sealed container, and a small sealed container.

[0008] The sensors include a sedimentation meter, a tilt meter, and a pore water pressure meter.

[0009] The large sealed container houses an underwater automatic monitoring and control system with a wireless transmission system inside, and has a wire frame on its surface. The automatic monitoring and control system connects data to the wireless transmission system of the underwater automatic monitoring and control system via wires.

[0010] The conductor frame is symmetrically equipped with an underwater wireless transmission system, which transmits data to the underwater transmitter transducer via a signal cable.

[0011] The sealed tank cover is sealed with a large flange and fixed with bolts and sealing strips. Two protective cylinders extend from the outside of the large flange. The top of the protective cylinders is sealed with a small flange. A watertight connector with a through-chamber design is used on the small flange to introduce the sensor wire into the protective cylinder. Two cable locks inside and outside the small flange lock the sensor wire. An armored cable is used on the outside, and a sealing box is set on the inside. The sealing box is filled with glue after the wire is introduced. After the wire end passes through the sealing box, it is welded to the aviation plug on the large flange. The aviation plug pins are solid. After welding, glue is applied.

[0012] Furthermore, the armored cable is provided with an inner core, a polyurethane inner sheath, a steel wire, and a polyurethane outer sheath in sequence from the inside to the outside.

[0013] Furthermore, the small sealed container is equipped with a battery and a configuration terminal inside, and a small sealed container wire frame is provided on the surface. The small sealed container wire frame is equipped with an underwater transmitting transducer.

[0014] Furthermore, the lead wire end includes a sleeve, and the sleeve is symmetrically provided on both sides with an O-ring, a steel washer, and an outer buckle.

[0015] Furthermore, the waterborne receiving transducer and computer terminal are fixed to the waterborne workboat. The waterborne receiving transducer is placed in the water and transmits the received sensor data to the computer terminal for display in real time via wires.

[0016] Compared with the prior art, this utility model provides a real-time monitoring device for the deformation stability of deep-water foundation based on acoustic wave transmission, which has the following advantages: (1) It can realize the automation of monitoring and the wireless and real-time data transmission, forming a complete automatic monitoring system technology, and can also reduce construction interference; (2) It has four layers of sealing protection inside and outside to prevent water seepage in different parts of the sealed tank, which can effectively prevent seawater seepage in the face of the complex environment of deep water; (3) It is divided into large and small sealed tanks. When it is necessary to change the configuration of the acquisition system or replace the battery, the small sealed tank can be retrieved for operation. This is not only conducive to data reading, but also reduces the risk of the entire system when the underwater wireless transmission system fails.

[0017] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the workflow of this utility model;

[0019] Figure 2 This is a schematic diagram of the large sealed container of this utility model;

[0020] Figure 3 This is a schematic diagram of the small sealed container of this utility model;

[0021] Figure 4 This is a detailed schematic diagram of the large sealed container of this utility model;

[0022] Figure 5 This is a detailed schematic diagram of the small sealed container of this utility model;

[0023] Figure 6 This is a schematic diagram of the explosion of the sleeve of this utility model.

[0024] 1-Large sealed container, 2-Small sealed container, 3-Large flange, 4-Bolt, 5-Sealing strip, 6-Cable lock head, 7-Armored cable, 8-Sealing box, 9-Protective sleeve, 10-Sleeve, 11-O-ring, 12-Steel washer, 13-External thread, 16-Battery, 17-Configuration terminal Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] Combination Figure 1-6 A real-time monitoring device for deep-water foundation deformation and stability based on acoustic wave transmission is proposed. By combining deep-water foundation automatic monitoring technology with underwater acoustic wireless transmission technology, it can achieve automated measurement and real-time data transmission of foundation deformation at a depth of 40 m. The device includes sensors, signal cables, a large sealed container 1, and a small sealed container 2.

[0027] The sensors include settlement gauges, inclinometers, and pore water pressure gauges. Underwater drilling is performed using a geological drilling vessel, and divers place the sensors. Cables are then arranged on the workboat to test the sensors' effectiveness. Subsequently, a layer of medium-coarse sand and gravel is placed perpendicular to the sensor's installation location along its axis to provide coverage and protection for the sensors and cables. The sensors measure ground settlement, pore water pressure, and horizontal displacement signals.

[0028] Signal cables and other wires are pre-bundled with nylon rope, one knot per meter, and marked with length. Since the rope is short and the wires are long, in case the bundled wires break, they can be reconnected one-to-one according to the length markings. High-pressure tubing with a four-layer steel wire lining is used to protect the wires, adapting to the unevenness of the trench bottom and slope surface and future ground settlement. Special wire ends are used to protect the wire connections, including a sleeve 10, an O-ring 11, a steel washer 12, and an outer clip 13. Sensor measurement data is transmitted to the automatic measurement and control system for storage via signal cables.

[0029] The automatic monitoring and control system and the wireless transmission system are fixed inside the large sealed tank 1 to solve the system's waterproofing problem. Four layers of sealing protection are installed inside and outside to address the possibility of water seepage in different areas. The tank cover is sealed with a large flange 3 and secured with bolts 4 and sealing strips 5. Bolts 4 are made of stainless steel, and sealing strips 5 are made of PTFE rubber. Two protective cylinders 9 extend from the outside of the large flange. The top of the protective cylinder 9 is sealed with a small flange. A watertight connector with a through-chamber design is used on the small flange to guide the sensor wires into the protective cylinder 9. Two cable locking heads 6 on the inside and outside of the small flange secure the sensor wires. An armored cable 7 is used on the outside, consisting of an inner core, a polyurethane inner sheath, steel wire, and a rolled paper outer sheath. A sealing box 8 is installed inside the protective cylinder 9. After the wires are introduced, the sealing box 8 is filled with adhesive to prevent seawater from seeping into the sealed tank due to damage to the wire sheath. After the wire ends pass through the sealing box, they are welded to an aviation connector on the large flange. The aviation connector pins are solid. After welding, adhesive is applied to prevent seawater from seeping into the sealed tank along the core wire. The dynamic monitoring and control system transmits data to the underwater wireless transmission system via signal cable for storage and preservation.

[0030] The automatic monitoring and control system configuration terminal 17 and battery 16 are housed in a small sealed container 2, sealed using the same methods as the large sealed container 1. Battery 16 supplies power to the sensor, automatic monitoring and control system, wireless transmission system host, and underwater transducer via cables. The underwater wireless transmission system transmits data to the underwater transducer via signal cables; the underwater transducer converts digital signals into acoustic signals and transmits them to the surface receiving transducer.

[0031] The placement of the large sealed container 1 and the small sealed container 2 is divided into three steps: First, the large sealed container 1 and the conductor frame are fixed on the concrete base, and the transmitting transducer is fixed on the top of the conductor frame to ensure signal transmission; Second, the power lines of the automatic measurement and control system and the configuration terminal, as well as the power lines of the underwater wireless transmission system, are led to the small sealed container 2 using armored cables 7; Third, after completing the connection of the cables to the system and the sealing of the sealed containers, the large and small sealed containers are hoisted and placed on the mud surface 50m outside the foot of the underwater breakwater using a workboat.

[0032] The waterborne receiving transducer and computer terminal are fixed to the workboat. The waterborne receiving transducer is placed in the water and transmits the received sensor data to the computer terminal for display in real time via wires. The waterborne receiving transducer converts the acoustic signals into digital signals and transmits them to the computer terminal.

[0033] The specific working method includes the following steps:

[0034] Step S100: Install sensors to measure the settlement, pore water pressure and horizontal displacement signals of the foundation;

[0035] In step S200, the sensor's measurement data is transmitted to the automatic measurement and control system via a signal cable for storage and preservation.

[0036] In step S300, the automatic monitoring and control system transmits the data to the underwater wireless transmission system via a signal cable for storage.

[0037] In step S400, the underwater wireless transmission system transmits data to the underwater transmitter transducer via a signal cable;

[0038] In step S500, the underwater transmitting transducer converts the digital signal into an acoustic signal and transmits it to the surface receiving transducer.

[0039] In step S600, the water-based receiving transducer converts the acoustic signal into a digital signal and transmits it to the computer terminal.

[0040] The scope of protection of this utility model is defined by the claims, including equivalent technical solutions. The description and drawings are merely examples and do not constitute a limitation. The reference numerals in the claims are also not limiting.

Claims

1. A real-time monitoring device for the deformation and stability of deep-water foundations based on acoustic wave transmission, characterized in that, Includes sensors, signal cables, a large sealed container (1), and a small sealed container (2). The sensors include a sedimentation meter, a tilt meter, and a pore water pressure meter. The large sealed container (1) is equipped with an underwater automatic measurement and control system wireless transmission system inside, and a large sealed container wire frame is provided on its surface. The automatic measurement and control system connects the data to the underwater automatic measurement and control system wireless transmission system. The conductor frame is symmetrically equipped with an underwater wireless transmission system, which transmits data to the underwater transmitter transducer via a signal cable. The sealing tank cover is sealed with a large flange (3) and fixed with bolts (4) and sealing strips (5). Two protective cylinders (9) are led out from the outside of the large flange. The top of the protective cylinder is sealed with a small flange. A watertight connector is used on the small flange to introduce the sensor wire into the protective cylinder. Two cable lock heads (6) inside and outside the small flange lock the sensor wire. An armored cable (7) is used on the outside and a sealing box (8) is set on the inside. The sealing box (8) is filled with glue after the wire is introduced. After the wire end passes through the sealing box, it is welded to the aviation plug on the large flange. The aviation plug pins are solid. After welding, glue is applied.

2. The real-time monitoring device for deep-water foundation deformation stability based on acoustic wave transmission according to claim 1, characterized in that, The armored cable (7) consists of an inner core, a polyurethane inner sheath, a steel wire, and a polyurethane outer sheath, arranged sequentially from the inside to the outside.

3. The real-time monitoring device for deep-water foundation deformation stability based on acoustic wave transmission according to claim 1, characterized in that, The small sealed container (2) is equipped with a battery (16) and a configuration end (17) inside, and a small sealed container wire frame is provided on the surface. The small sealed container wire frame is equipped with an underwater transmitting transducer.

4. The real-time monitoring device for deep-water foundation deformation stability based on acoustic wave transmission according to claim 1, characterized in that, The wire head includes a sleeve (10), and the sleeve is symmetrically provided on both sides with an O-ring (11), a steel washer (12), and an outer buckle (13).

5. The real-time monitoring device for deep-water foundation deformation stability based on acoustic wave transmission according to claim 1, characterized in that, The waterborne receiving transducer and computer terminal are fixed to the waterborne workboat. The waterborne receiving transducer is placed in the water and transmits the received sensor data to the computer terminal for display in real time via wires.

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