CN107576307B - Underwater fixed foundation fluid scouring real-time monitoring system and method - Google Patents
Underwater fixed foundation fluid scouring real-time monitoring system and method Download PDFInfo
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- CN107576307B CN107576307B CN201710765774.7A CN201710765774A CN107576307B CN 107576307 B CN107576307 B CN 107576307B CN 201710765774 A CN201710765774 A CN 201710765774A CN 107576307 B CN107576307 B CN 107576307B
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Abstract
The invention provides a real-time monitoring system and a real-time monitoring method for underwater fixed foundation fluid scouring settlement. As shown in the attached drawing, the core idea is to realize real-time monitoring of the fluid erosion settlement of the fixed foundation by using the tension sensor to monitor the position change of the settlement probe rod which is connected with the tension sensor and freely placed around the fixed foundation in the fluid erosion settlement forming and developing process. The system tension sensing and data acquisition module is arranged on a fixed foundation, one end of the traction part is connected with the tension sensing module in a sliding manner, and the other end of the traction part is connected with the settlement probe rod; the settlement probe rod is freely placed on the water bottom surface around the fixed foundation along the fixed sleeve; wherein, subside probe rod can subside along with the subsiding of bottom surface of water under self action of gravity to through the pulling force sensor of traction portion pulling, with the actual data of acquireing bottom surface subsidence, reduce the monitoring cost to bottom surface subsidence, realize the effective, real-time supervision of subsiding to fixed basic fluid scouring.
Description
Technical Field
The invention relates to fluid scouring settlement monitoring of fixed foundations in various fields of water conservancy, bridges, petroleum, natural gas, offshore wind power and the like, in particular to a real-time fluid scouring monitoring system and method for an underwater fixed foundation.
Background
Scouring is an inevitable natural phenomenon that occurs when water flows through an underwater fixed foundation. When water flows through the fixed foundation, the water flow erodes the riverbed around the fixed foundation and takes away sediment such as silt around the fixed foundation, so that a depression can be formed around the fixed foundation. And once a hollow occurs around the fixed base, the strength of the fixed base is reduced. In extreme climatic load conditions such as storms, tsunamis, etc., a low strength fixed foundation is very likely to collapse suddenly without warning. The scouring problem of the fixed foundation is concerned in the field of marine engineering such as water conservancy, bridges, ports and the like.
In the past, in marine engineering such as water conservancy, bridges and ports with serious fixed foundation scouring problems, understanding of foundation scouring is mainly completed by regularly carrying out underwater camera shooting and picture taking around a fixed foundation. When the water depth is deep or the underwater environment is severe (such as poor visibility), the method is very difficult to implement, and the formation and development conditions of the scouring settlement on the underwater surface cannot be monitored in real time through underwater shooting and photographing. The fixed foundation collapse accident caused by scouring often happens suddenly, so that the traditional methods based on underwater shooting and photographing are difficult to meet the requirement of ensuring the safety of the fixed foundation. Therefore, in order to realize the real-time monitoring of the phenomenon of the scouring and sedimentation of the water bottom surface around the fixed foundation, the industry develops a monitoring scheme by means of sonar, ultrasonic waves, optical fiber measurement and the like. Each of these solutions has advantages, but they have common disadvantages of being expensive, inconvenient to use, and the effectiveness and reliability of their monitoring can be affected by factors such as water depth and surface wave conditions. For example, in an offshore wind farm, hundreds of wind turbines may be operated simultaneously, and such complex and expensive monitoring techniques and equipment are expensive to use for the scouring monitoring of the fixed foundation of the wind turbines in the offshore wind farm.
Disclosure of Invention
The invention provides a real-time monitoring system and a real-time monitoring method for underwater fixed foundation fluid scouring, which are used for reducing the cost of underwater surface settlement monitoring and improving the monitoring reliability.
The invention provides a real-time monitoring system for underwater fixed base fluid scouring, which comprises: the device comprises a fixed foundation, a tension sensing module, a data acquisition and analysis processing module, a traction part and a settlement probe rod;
the fixed foundation is fixedly arranged under water, the tension sensing module and the data acquisition and analysis processing module are arranged on the fixed foundation, one end of the traction part is connected with the tension sensing module in a sliding manner, and the other end of the traction part is connected with the settlement probe rod; the sedimentation probe rod is sleeved in the fixed sleeve and freely placed on the water bottom surface around the fixed foundation along the sleeve;
the data acquisition and analysis processing module is connected with the tension sensor; the sedimentation probe rod can displace along with the sedimentation of the surface of the water bottom under the action of the gravity of the sedimentation probe rod;
the tension sensing module is used for acquiring motion data of underwater surface settlement through the settlement of the traction part along with the settlement probe rod.
The tension sensing module comprises at least one tension sensor and at least one spring; the tension sensor is connected with the first end of the spring; the second end of the spring is connected with the traction part.
The traction part includes: at least one hauling cable, at least one first bracket;
the first end of the traction rope is connected with the second end of the spring; the second end of the traction rope is connected with the sedimentation probe rod;
the support is fixed in on the fixed basis, first support includes: a first bracket body and at least one pulley; the pulley is used for sliding and guiding the traction rope.
The settlement probe module comprises: the second bracket, at least one sleeve and at least one probe rod;
the probe rod is sleeved in the sleeve, and the first end of the probe rod is connected with the second end of the traction rope; the second end of the probe rod is in contact with the pulley; the sleeve is fixedly connected with the second bracket; the second support is fixedly connected to the fixed foundation.
In a second aspect of the present invention, there is provided a real-time monitoring method for underwater fixed foundation fluid scour, the method being performed by the real-time monitoring system for underwater fixed foundation fluid scour according to the first aspect of the present invention, the method comprising:
when the underwater surface is settled, the settlement probe rod can move along with the settlement of the underwater surface under the action of the gravity of the settlement probe rod;
the traction part is used for drawing the tension sensing module along with the displacement of the settlement probe rod;
and the tension sensing module generates motion data of settlement on the water bottom surface according to the traction of the traction part.
When taking place to subside on the bottom surface, subside the probe rod along with the bottom surface subsides and carries out the displacement, specifically includes:
when the water bottom surface is settled, the second end of the probe rod can move along with the water bottom surface;
the traction part is accompanied with the displacement of subsiding the probe rod, and is right the pulling force sensing module pulls, specifically includes:
when the second end of the probe rod is displaced, the first end of the probe rod pulls the traction rope through the second end of the traction rope;
the pulling force sensing module is according to the traction generation of traction portion the motion data that the bottom surface subsides includes:
the first end of the traction rope passes through the second end of the spring to generate tension on the spring;
the tension sensor detects the tension;
and the data acquisition and analysis processing module acquires the pulling force, generates motion data of the underwater surface settlement, and performs analysis processing to form a monitoring conclusion.
The system and the method for monitoring the fluid scouring of the underwater fixed foundation in real time are provided by the embodiment of the invention, the fixed foundation is fixedly arranged underwater, the tension sensing module is arranged on the fixed foundation, one end of the traction part is connected with the tension sensing module in a sliding way, and the other end of the traction part is connected with the sedimentation probe rod; the sedimentation probe rod is sleeved in the fixed sleeve and freely placed on the water bottom surface around the fixed foundation along the sleeve; wherein, the sedimentation probe rod can displace along with the sedimentation of the surface of the water bottom under the action of the gravity of the sedimentation probe rod; the tension sensing module is used for sensing the settlement of the settlement probe rod through the traction part, and the data acquisition and analysis processing module is used for acquiring, analyzing and processing the settlement data on the water bottom surface sensed by the tension sensing module.
Drawings
Fig. 1 is a schematic structural diagram of an underwater fixed base fluid scouring real-time monitoring system provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of another real-time monitoring system for underwater fixed base fluid scouring provided by an embodiment of the invention;
FIG. 3 is a schematic structural diagram of another real-time monitoring system for underwater fixed base fluid scouring provided by an embodiment of the invention;
FIG. 4 is a flow diagram of a method for real-time monitoring of underwater fixed base fluid scour according to an embodiment of the present invention;
fig. 5 is a flow chart of another method for real-time monitoring of underwater fixed base fluid scouring according to an embodiment of the invention.
Detailed Description
Fig. 1 is a schematic structural diagram of a real-time monitoring system for underwater fixed base fluid scouring provided by an embodiment of the invention, and referring to fig. 1, the system includes: the device comprises a fixed foundation 10, a tension sensing module 11, a traction part 12, a settlement probe 13 and a data acquisition and analysis processing module 14;
the fixed foundation 10 is fixedly arranged under water, the tension sensing module 11 is arranged on the fixed foundation 10, one end of the traction part 12 is connected with the tension sensing module 11 in a sliding manner, and the other end of the traction part 12 is connected with the settlement probe rod 13; the settlement probe 13 is arranged on the underwater surface around the fixed foundation 10;
wherein the sedimentation probe 13 sediments with the surface of the water surface;
the tension sensing module 11 is configured to obtain motion data of the underwater surface settlement through the settlement of the traction part 12 along with the settlement probe 13;
the measured data will be analyzed and processed by the data acquisition and analysis processing module 14; wherein, the data acquisition and analysis processing module 14 is connected with the tension sensing module.
The underwater fixed foundation fluid scouring real-time monitoring system provided by the embodiment of the invention is fixedly arranged underwater through a fixed foundation, the tension sensing and data acquisition and analysis processing module is arranged on the fixed foundation, one end of the traction part is connected with the tension sensing module in a sliding manner, and the other end of the traction part is connected with the sedimentation probe rod; the sedimentation probe rod is sleeved in the fixed sleeve and freely placed on the water bottom surface around the fixed foundation along the sleeve; wherein, the sedimentation probe rod can generate displacement along with the sedimentation of the surface of the water bottom under the action of the self gravity; the tension sensing module is used for acquiring formation and development data of underwater surface settlement through the settlement of the traction part along with the settlement probe rod, so that the monitoring cost of the underwater surface settlement is reduced, and the monitoring reliability and the real-time performance are improved.
Based on the embodiment shown in fig. 1, fig. 2 is a schematic structural diagram of another real-time monitoring system for underwater fixed base fluid scouring provided by the embodiment of the invention, referring to fig. 2, wherein the tension sensing module 11 comprises at least one tension sensor 112 and at least one spring 113;
wherein, the data acquisition and analysis processing module 14 is electrically connected with the tension sensor 112; the tension sensor 112 is connected with a first end of the spring 113; a second end of the spring 113 is connected to the traction part 12.
Accordingly, with reference to fig. 2, the traction portion 12 comprises: at least one traction rope 121, at least one first bracket 122;
a first end of the pulling rope 121 is connected with a second end of the spring 113; the second end of the pulling rope 121 is connected with the sedimentation probe 13;
the bracket is fixed on the fixed base 10, and the first bracket 122 includes: a first bracket body 1220 and at least one pulley 1221; the pulley 1221 is used for slidably disposing the traction rope 121.
Further, referring to fig. 2, the sedimentation probe 13 includes: a second bracket 131, at least one sleeve 132, at least one probe 133;
the probe rod 133 is sleeved on the sleeve 132, and a first end of the probe rod 133 is connected with a second end of the traction rope 121; a second end of the probe 133 is in contact with the underwater surface; the sleeve 132 is fixedly connected with the second bracket 131; the second bracket 131 is fixedly connected to the fixed base 10.
According to the embodiment of the invention, the plurality of probe rods are arranged, and the motion data of the settlement of the water bottom position corresponding to each probe rod is respectively acquired through the corresponding tension sensors, so that the test precision is improved.
In the embodiment shown in fig. 1 and 2, fig. 3 is a schematic structural diagram of another underwater fixed base fluid scouring real-time monitoring system provided by the embodiment of the present invention, referring to fig. 3, the tension sensing module 11 of the system may further be additionally provided with a communication module 114 for sending motion data of settlement on the water bottom surface to the data processing system 15, so that the data processing system 15 analyzes the settlement condition on the water bottom surface based on the motion data.
Optionally, the communication module 114 may support wired and wireless communication for data transmission with the data processing system 15 via a communication link; further, the data processing system 15 may be disposed on the water vehicle, in a monitoring center near the water area, or may be disposed independently above the water surface of each fixed foundation 10, and the data processing system 15 is not particularly limited in this application.
Optionally, the communication module 114 may be directly connected to the tension sensor 112, and directly send data from the tension acquired by the tension sensor 112 to the data processing system 15; alternatively, the communication module may be connected to the data collection and analysis processing module 14 in fig. 1, that is, the analysis result processed by the data collection and analysis processing module 14 is transmitted to the data processing system 15 through the communication module 114.
It should be noted that, the number of the tension sensors in the above embodiments is three, and therefore the number of the related springs, the pulling ropes, the pulleys, the probe rods, and the sleeves are all matched with the number of the tension sensors, it is conceivable that the number of the devices in the above embodiments may be set correspondingly for different implementation scenarios, and the embodiments of the present invention are not limited.
In addition, the system provided by the embodiment of the invention can be applied to fixed foundation monitoring in various types of water areas such as oceans, rivers and the like, and has wide application scenes.
Based on the above embodiments, the system may perform the acquisition of motion data of a sediment on the water bottom surface, and a specific embodiment of the acquisition of the motion data is given below. Fig. 4 is a flowchart of a method for real-time monitoring of underwater fixed base fluid scouring, according to an embodiment of the present invention, and with reference to fig. 4, the method includes:
101, the traction part pulls the tension sensing module along with the displacement of the settlement probe rod;
and 102, generating motion data of settlement on the water bottom surface by the tension sensing module according to the traction of the traction part.
According to the underwater fixed foundation fluid scouring real-time monitoring method provided by the embodiment of the invention, when sedimentation occurs on the underwater surface, the sedimentation probe rod moves along with the underwater surface; the traction part is used for drawing the tension sensing module along with the displacement of the settlement probe rod; the pulling force sensing module is according to the traction of traction portion generates the motion data of subsiding on the bottom surface, reduces the monitoring cost to subsiding on the bottom surface, improves monitoring efficiency.
In conjunction with the schematic structural diagram of the system for monitoring the underwater fixed base fluid scouring in real time shown in fig. 2, the embodiment of the present invention provides a specific implementation manner for implementing the method shown in fig. 4. On the basis of fig. 4, fig. 5 is a flow diagram of another method for real-time monitoring of underwater fixed base fluid scouring provided by the embodiment of the invention, and referring to fig. 5, the method includes:
one possible implementation of step 100 is:
one possible implementation of step 101 is:
101a, when the second end of the probe rod moves, the first end of the probe rod pulls the traction rope through the second end of the traction rope;
one possible implementation of step 102 is:
102a, enabling a first end of the traction rope to pass through a second end of the spring to generate tension on the spring;
102b, detecting the tension by the tension sensor;
and 102c, the data acquisition unit acquires the pulling force to generate the motion data of the settlement on the water bottom surface.
And the data acquisition and analysis processing module acquires the pulling force, generates motion data of the underwater surface settlement, and performs analysis processing to form a monitoring conclusion.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. An underwater fixed base fluid scouring real-time monitoring system, comprising:
the device comprises a fixed foundation, a tension sensing module, a data acquisition and analysis processing module, a traction part, a settlement probe rod and a communication module;
the fixed foundation is fixedly arranged under water, the tension sensing module and the data acquisition and analysis processing module are arranged on the fixed foundation, one end of the traction part is connected with the tension sensing module in a sliding manner, and the other end of the traction part is connected with the settlement probe rod; the settlement probe rod is freely placed on the water bottom surface around the fixed foundation along the fixed sleeve;
wherein the fixed sleeve is fixed on the fixed foundation; the sedimentation probe rod can be sedimentated along with the sedimentation of the surface of the water bottom under the action of the gravity of the sedimentation probe rod;
the tension sensing module is used for acquiring real data of the settlement of the underwater surface through the settlement of the traction part along with the settlement probe rod, and the measured data is analyzed and processed by the data acquisition and analysis processing module; the data acquisition and analysis processing module is connected with the tension sensing module;
the communication module is used for sending the motion data of the settlement on the water bottom surface to the data processing system so that the data processing system can analyze the settlement on the water bottom surface based on the motion data;
the traction part includes: at least three pull ropes, at least one first bracket;
the support is fixed in on the fixed basis, first support includes: a first bracket body and at least three pulleys; the pulley is used for sliding and guiding the traction rope;
the tension sensing module comprises at least three tension sensors and at least three springs;
wherein the tension sensor is connected with the first end of the spring; the second end of the spring is connected with the traction part;
the first end of the traction rope is connected with the second end of the spring; the second end of the traction rope is connected with the sedimentation probe rod;
the settlement probe comprises: the device comprises at least one second bracket, at least three sleeves and at least three probe rods;
the probe rod is sleeved in the sleeve, and the first end of the probe rod is connected with the second end of the traction rope; the second end of the probe rod is freely contacted with the water bottom surface; the sleeve is fixedly connected to the second bracket;
the sleeves are sequentially arranged along the extending direction of the second support, so that radial arrangement with the fixed foundation as the center is realized;
the second support is fixedly connected to the fixed foundation;
the tension sensor, the spring, the traction rope, the pulley, the probe rod and the sleeve are mutually matched in number, and the connection relationship of the tension sensor, the spring, the traction rope, the pulley, the probe rod and the sleeve is in one-to-one correspondence with each other.
2. The system of claim 1, wherein the communication module is directly connected to the tension sensor and directly transmits data from the tension acquired by the tension sensor to the data processing system.
3. The system of claim 1, wherein the communication module is connected to the data collection and analysis processing module, so that the analysis result processed by the data collection and analysis processing module is transmitted to the data processing system through the communication module.
4. A method for real-time monitoring of underwater fixed base fluid scour, the method being performed by the underwater fixed base fluid scour real-time monitoring system of any one of claims 1 to 3, the method comprising:
when the water bottom surface around the fixed foundation is settled due to fluid scouring, the settlement probe rod moves along with the water bottom surface;
the traction part is used for drawing the tension sensing module along with the displacement of the settlement probe rod;
and the tension sensing module generates settlement displacement data of the water bottom surface according to the traction of the traction part.
5. The method of claim 4, wherein the displacement of the settlement probe under its own weight with the settlement of the water bottom surface when the water bottom surface is settled comprises:
when the water bottom surface is settled, the second end of the probe rod is displaced along with the water bottom surface;
the traction part is accompanied with the displacement of subsiding the probe rod, and is right the pulling force sensing module pulls, specifically includes:
when the second end of the probe rod is displaced, the first end of the probe rod pulls the traction rope through the second end of the traction rope;
the pulling force sensing module is according to the traction generation of traction portion subsides on the water bottom surface motion data, includes:
the first end of the traction rope passes through the second end of the spring to generate tension on the spring;
the tension sensor detects the tension;
and the data acquisition and analysis processing module acquires the pulling force, generates motion data of the underwater surface settlement, and performs analysis processing to form a monitoring conclusion.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765774.7A CN107576307B (en) | 2017-08-30 | 2017-08-30 | Underwater fixed foundation fluid scouring real-time monitoring system and method |
| PCT/CN2018/075125 WO2019019601A1 (en) | 2017-07-28 | 2018-02-02 | Self-powered real-time monitoring system for fluid flushing of underwater fixed foundation |
| JP2020517248A JP6905294B2 (en) | 2017-07-28 | 2018-02-02 | Real-time monitoring system for fluid scouring on self-powered underwater fixed foundations |
| US16/634,751 US11441531B2 (en) | 2017-07-28 | 2018-02-02 | Self-powered real-time monitoring system for fluid flushing of underwater fixed foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710765774.7A CN107576307B (en) | 2017-08-30 | 2017-08-30 | Underwater fixed foundation fluid scouring real-time monitoring system and method |
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| CN107576307A CN107576307A (en) | 2018-01-12 |
| CN107576307B true CN107576307B (en) | 2020-11-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11441531B2 (en) | 2017-07-28 | 2022-09-13 | Hunan Institute Of Engineering | Self-powered real-time monitoring system for fluid flushing of underwater fixed foundation |
| CN111980078B (en) * | 2020-07-29 | 2022-01-28 | 中铁十局集团第二工程有限公司 | Road and bridge that can rectify automatically subsides detection device for deformation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204854719U (en) * | 2015-08-07 | 2015-12-09 | 中铁西南科学研究院有限公司 | Pier erodees measuring apparatu |
| CN106052604A (en) * | 2016-05-30 | 2016-10-26 | 北京交通大学 | Device for measurement of local scour depth around bridge pier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201837364U (en) * | 2010-09-15 | 2011-05-18 | 宝鸡市赛索电子科技有限公司 | Pull-press strain-gauge-type sensor |
| CN106759543B (en) * | 2016-12-27 | 2018-08-10 | 丽水学院 | A kind of round-the-clock long-range bridge foundation washout monitoring and warning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204854719U (en) * | 2015-08-07 | 2015-12-09 | 中铁西南科学研究院有限公司 | Pier erodees measuring apparatu |
| CN106052604A (en) * | 2016-05-30 | 2016-10-26 | 北京交通大学 | Device for measurement of local scour depth around bridge pier |
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