CN112254864A - Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method - Google Patents
Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method Download PDFInfo
- Publication number
- CN112254864A CN112254864A CN202011107339.3A CN202011107339A CN112254864A CN 112254864 A CN112254864 A CN 112254864A CN 202011107339 A CN202011107339 A CN 202011107339A CN 112254864 A CN112254864 A CN 112254864A
- Authority
- CN
- China
- Prior art keywords
- real
- seabed
- time monitoring
- situ
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
Abstract
The invention provides a device for in-situ real-time monitoring of sediment pore pressure and seabed deformation and a laying method, wherein the device comprises an in-situ real-time monitoring device and a data acquisition system, the in-situ real-time monitoring device comprises steel pipes, the steel pipes are connected through metal corrugated pipes, and a three-axis acceleration sensor, a water hole, a pore pressure sensor, a temperature sensor and a microprocessor are arranged in each steel pipe; the data acquisition system comprises a sealed acquisition bin, data acquisition and transmission equipment and a lithium battery are arranged in the sealed acquisition bin, a communication interface of the data acquisition and transmission equipment is connected with a real-time communication cable through a watertight joint, and the other end of the real-time communication cable is connected with a communication floating ball. By the technical scheme, the problem that the hole pressure probe rod cannot be normally penetrated due to the hard seabed sediment and the like is solved, the distribution risk is reduced, the distribution position and depth can be more accurately determined, and the accuracy of observation data is improved. And the real-time acquisition and wireless transmission of hole pressure data and sediment slippage at different depths of the seabed are realized.
Description
Technical Field
The invention relates to the technical field of submarine observation and the technical field of ocean engineering geology, in particular to a device for monitoring sediment pore pressure and seabed deformation in real time in situ and a laying method.
Background
The seabed deformation sliding is the most intuitive index for reflecting the seabed stability, and the observation data on the aspect can help us to analyze the deformation characteristics of seabed early-stage geological disasters on one hand, provide powerful evidence for researching disaster mechanisms, and on the other hand can provide early warning for ocean engineering and guarantee the engineering and personnel safety. Due to the complex engineering dynamic geological action of the seabed, the implementation difficulty of in-situ observation is high, and the technical requirement on observation equipment is higher, so the research on the deformation sliding process of the seabed is in an exploration stage at home and abroad. Particularly, under the action of wave power or earthquake, the internal pore water pressure of the submarine sediment is continuously dynamically changed, and the effective normal stress of the submarine sediment is reduced due to the dynamic accumulation of the pore water pressure, so that the seabed liquefaction and the seabed lateral deformation are easily caused, and even the seabed landslide is induced. Pore water pressure in-situ observation can effectively reflect the submarine dynamic geological process, and has important significance for researching the dynamic response of seabed sediments under the action of hydrodynamic force such as waves and the like.
Aiming at a series of sliding instability damages induced by the liquefaction of sediments caused by the accumulation of pore water pressure, dynamic observation data of pore pressure and displacement need to be obtained simultaneously, displacement monitoring equipment and a pore water pressure probe rod need to be respectively arranged according to the existing in-situ observation technology, and the arrangement position, the acquisition frequency and the data correlation of the displacement monitoring equipment and the pore water pressure probe rod seriously influence the observation effect and the effective analysis of subsequent data. The invention skillfully integrates pore pressure observation and seabed deformation sliding observation into an in-situ observation device, and can effectively promote the research on seabed sliding instability damage mechanism and early warning scheme caused by seabed sediment liquefaction.
Disclosure of Invention
In order to make up the defects of the prior art, the in-situ observation of two parameters, namely the pore water pressure value and the deformation slippage, at different depths of the seabed is realized simultaneously, and data and technical support are provided for monitoring and early warning of seabed slippage instability damage caused by liquefaction. The observation device is laid in a marine drilling mode, the problem that a hole pressure probe rod (penetration type) cannot be normally penetrated due to the hard seabed sediment and other reasons is solved, the laying risk is reduced, meanwhile, the laying position and depth can be accurately determined, and the accuracy of observation data is improved. The real-time acquisition and wireless transmission of hole pressure data and sliding deformation of sediments at different depths of the seabed are realized. The invention provides a device for monitoring sediment pore pressure and seabed deformation in situ in real time and a distribution method.
The invention is realized by the following technical scheme: the device for in-situ real-time monitoring sediment pore pressure and seabed deformation comprises an in-situ real-time monitoring device and a data acquisition system, wherein the in-situ real-time monitoring device comprises 8 steel pipes which are connected in series, each two sections of steel pipes are connected through a metal corrugated pipe, a rubber waterproof pad is arranged in the joint of the steel pipes and the metal corrugated pipe, a triaxial acceleration sensor and a temperature sensor are arranged in each section of steel pipe, the steel pipes are connected in series through data wires in the steel pipes, water holes are processed in the first, the third and the fifth steel pipes from top to bottom, pore pressure sensors are arranged in the water holes, the bottom ends of the steel pipes at the bottom are processed through threads and are provided with conical counterweights through threads, a microprocessor is arranged in the steel pipes at the top, data transmission watertight cables are arranged at the top ends of the steel pipes at the top, and the triaxial, and the data line is connected to the data acquisition system through a data transmission watertight cable;
the data acquisition system is including sealed collection storehouse, sealed collection storehouse divide into about two-layer, data acquisition transmission equipment is installed on the upper strata, the lithium cell is installed to the lower floor, the top in sealed collection storehouse is equipped with the watertight joint, data acquisition transmission equipment's collection interface passes through the watertight joint and is connected with the one end of data transmission watertight cable, data acquisition transmission equipment's communication interface passes through the watertight articulate real-time communication cable, the communication floater is connected to the other end of real-time communication cable, the fixed L type support that is equipped with on the lower part outer wall in sealed collection storehouse, sealed collection storehouse passes through L type support fixed mounting and prevents subsiding in the base.
Preferably, the steel pipe is made of stainless steel and 500 mm in length, the steel pipe is of a tubular structure, two ends of the steel pipe are threaded, and every two steel pipes are connected through threads by using a metal corrugated pipe.
Furthermore, the metal corrugated pipe is made of stainless steel.
As preferred scheme, the data transmission watertight cable wraps up stainless steel wire net outward.
Preferably, the water holes are externally provided with permeable stones.
As preferred scheme, real-time communication cable selects armoured cable.
Preferably, the anti-settling base is made of stainless steel.
Preferably, the anti-settling base is in the shape of a cubic frame, and perforated discs are arranged at four corners of the bottom of the anti-settling base.
The working method of the device for in-situ real-time monitoring of sediment pore pressure and seabed deformation comprises the following specific steps:
s1: setting acquisition frequency and sending interval parameters, and then putting data acquisition and transmission equipment into a sealed acquisition bin;
s2: driving the ship to an observation point position by using a positioning system of the operation ship, and anchoring to keep the ship body in a stable state; drilling the seabed of the observation point position by using the offshore drilling rig device on the operation ship, simultaneously lowering the casing pipe in the drilling process, wherein the drilling depth is not less than the length of the in-situ real-time monitoring device, and taking out the drill pipe after completion;
s3: the in-situ real-time monitoring device is lowered into a seabed borehole along the casing pipe to keep the seabed borehole in a vertical state, and whether the data transmission watertight cable is in a stretched state or not can be judged;
s4: filling the drilled hole with engineering sand to ensure that the in-situ real-time monitoring device is fixed in the seabed in the casing pipe pulling-out process;
s5: sealing the tail end of a data transmission watertight cable of the in-situ real-time monitoring device by using a watertight plug, binding a small floating ball to enable the tail end of the transmission cable to float in water, and throwing the cable into the water along a sleeve after the completion;
s6: completely pulling out the sleeve, fishing out the data transmission watertight cable from the water, connecting the watertight cable with the sealed acquisition bin, and connecting the real-time communication cable connected with the communication floating ball with the watertight connector;
s7: mounting the sealed collection bin on an anti-settling base, and then lowering the anti-settling base to the surface of the seabed by using a lifting device;
s8: the in-situ real-time monitoring device starts to carry out data measurement, acquisition and transmission according to set parameters, and can carry out real-time data transmission and remote control of an acquisition system through upper computer software;
s9: after the in-situ observation period is finished, the operation ship is driven back to the observation point position, and the in-situ real-time monitoring device and the anti-settling base are recovered;
s10: the triaxial acceleration sensor of installation in the steel pipe for measure the inclination of relative gravity, because every section steel pipe length is fixed value 500 millimeters, according to length and three-directional angle variation, combine the cosine theorem can calculate the displacement size in three directions, use the distal end as calculating the reference point, can obtain the displacement size at different nodes through the mode of adding up, it is as follows to go out detailed formula:
wherein L is the length of the steel pipe 1,
、
、
respectively the change angles of the nth section of steel pipe 1 along the x, y and z direction axes,
、
、
is the magnitude of the displacement change.
As a preferable scheme, in step S7, when the wireless function of the real-time transmission of the data fails, the data acquisition and transmission device may be taken out for data reading, so as to obtain in-situ observation data of the pressure and slippage of the seabed pores at different depths, and perform corresponding analysis.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects: 1. the application material is improved, the pressure resistance is better, and the safety is higher; the whole part adopts high strength stainless steel material, compares in the design of the hollow pole outsourcing steel wire netting cover of high molecular polymer before, has better withstand voltage nature and higher intensity. The observation device is arranged in an offshore drilling mode, so that arrangement and recovery can be guaranteed to be completed under seabed with different substrate types, and the observation device has better safety. Compared with a probe rod type observation device, the drill hole arrangement mode can better control the arrangement position and the arrangement depth, so that the accuracy of observation data is improved. 2. The hole pressure and the slippage of the seabed can be observed simultaneously; the invention can simultaneously measure the pore water pressure of the seabed and the slippage of sediments at different depths of the seabed, and closely combines two important observation parameters in time and space, thereby avoiding the difficulties of field work and data analysis caused by the differences of various observation equipment in acquisition frequency, observation time, arrangement position and method, and the like. 3. The real-time acquisition and transmission of two kinds of observation data can be realized. The invention can not only finish the simultaneous observation of pore pressure data and slippage, but also realize the real-time collection and transmission of two kinds of data. The collection system can be connected to extend to the communication floater on the surface of seawater through the watertight connector, the two-way communication between the collection system and the upper computer is realized through 4G signals, and the real-time transmission of data and the remote control of collection frequency and mode can be carried out.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an in-situ real-time monitoring device;
FIG. 3 is a connection structure diagram of a steel pipe and a metal bellows;
FIG. 4 is a cross-sectional view of an in-situ real-time monitoring device;
figure 5 is a flow chart of a deployment method of the present invention,
wherein, the corresponding relationship between the reference numbers and the components in fig. 1 to fig. 4 is:
1 steel pipe, 2 metal corrugated pipes, 3 data transmission watertight cables, 4 data acquisition and transmission equipment, 5 lithium batteries, 6 anti-settling bases, 7 perforated disks, 8L-shaped supports, 9 sealed acquisition bins, 10 watertight joints, 11 real-time communication cables, 12 communication floating balls, 13 microprocessors, 14 triaxial acceleration sensors, 15 temperature sensors, 16 rubber waterproof pads, 17-hole pressure sensors, 18 water holes and 19 conical balance weights.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
The in-situ observation device for monitoring the pore pressure and the slippage of the seabed in real time according to the embodiment of the present invention will be specifically described with reference to fig. 1 to 4.
As shown in fig. 1 to 4, the invention provides a device for in-situ real-time monitoring of sediment pore pressure and seabed deformation, which comprises an in-situ real-time monitoring device and a data acquisition system, wherein the in-situ real-time monitoring device comprises 8 steel pipes 1 which are connected in series, the steel pipes 1 are made of stainless steel materials and have a length of 500 mm, the steel pipes 1 are tubular structures, two ends of each steel pipe are subjected to thread treatment, and every two steel pipes 1 are connected through a metal corrugated pipe 2 through threads. The metal corrugated pipe 2 is made of stainless steel materials, and can realize irregular turning, stretching and torsion resistance as a connecting element, so that each section of stainless steel pipe is allowed to bend 360 degrees around the metal corrugated pipe, and the metal corrugated pipe can be bent and deformed to a certain degree at the connecting position. A rubber waterproof pad 16 is arranged in the joint of the steel pipe 1 and the metal corrugated pipe 2, so that the water tightness of the structure is guaranteed. A triaxial acceleration sensor 14 and a temperature sensor 15 are arranged in each section of steel pipe 1, the three sections of steel pipes are connected in series through data lines in the steel pipe 1, the displacement, namely the slippage, of each node can be calculated through the change of the posture measured by the triaxial acceleration sensor 14, and the temperature sensor 15 is used for temperature compensation. The first, third and fifth steel pipes 1 from top to bottom are processed with water holes 18, a hole pressure sensor 17 is arranged in the water hole 18, and permeable stones are arranged outside the water hole 18 to prevent silt from blocking the water hole 18. The bottom end of the steel pipe 1 positioned at the bottom is processed by threads and is provided with a conical balance weight 19 through threads, and a microprocessor 13 is arranged in the steel pipe 1 positioned at the top and is used for acquiring temperature correction data and acquiring and resolving data of the triaxial acceleration sensor. The top end of the steel pipe 1 positioned at the top is provided with a data transmission watertight cable 3, and the data transmission watertight cable 3 is wrapped by a stainless steel wire mesh and is used for tension bearing when cloth is put back and recovered. The triaxial acceleration sensor 14, the temperature sensor 15 and the microprocessor 13 are in communication connection inside the steel pipe 1 through data lines, and the data lines are connected to a data acquisition system through a data transmission watertight cable 3.
The data acquisition system comprises a sealed acquisition bin 9, the sealed acquisition bin 9 is divided into an upper layer and a lower layer, the upper layer is provided with data acquisition and transmission equipment 4, and the lower layer is provided with a lithium battery 5, so that the high-capacity lithium battery can be supplied with power by all the components. The top end of the sealed collection bin 9 is provided with a watertight joint 10, and a collection interface of the data collection transmission equipment 4 is connected with one end of the data transmission watertight cable 3 through the watertight joint 10, so that the collection of pore pressure data and slippage data is realized. The communication interface of the data acquisition and transmission equipment 4 is connected with a real-time communication cable 11 through a watertight connector 10, and the real-time communication cable 11 is an armored cable, so that the communication cable is prevented from breaking. The other end of the real-time communication cable 11 is connected with the communication floating ball 12, so that real-time transmission of collected data is realized. An L-shaped bracket 8 is fixedly arranged on the outer wall of the lower part of the sealed collection bin 9, and the sealed collection bin 9 is fixedly arranged in the anti-sedimentation base 6 through the L-shaped bracket 8, so that the stability of the sealed collection bin in the distribution and recovery process is ensured. The anti-settling base 6 is made of stainless steel materials, the anti-settling base 6 is in a cubic frame shape, the perforated disc 7 is installed at the four corners of the bottom of the anti-settling base, water flow resistance in the lowering process can be reduced, meanwhile, the stress area is increased, and the anti-settling base is guaranteed to be stably distributed on the surface of a seabed and settlement is reduced.
As shown in fig. 5, the method for deploying the device for in-situ real-time monitoring of sediment pore pressure and seabed deformation comprises the following specific steps:
s1: setting acquisition frequency and sending interval parameters, and then putting the data acquisition and transmission equipment 4 into a sealed acquisition bin 9;
s2: driving the ship to an observation point position by using a positioning system of the operation ship, and anchoring to keep the ship body in a stable state; drilling the seabed of the observation point position by using the offshore drilling rig device on the operation ship, simultaneously lowering the casing pipe in the drilling process, wherein the drilling depth is not less than the length of the in-situ real-time monitoring device, and taking out the drill pipe after completion;
s3: the in-situ real-time monitoring device is lowered into a seabed borehole along the casing pipe to keep the seabed borehole in a vertical state, and whether the data transmission watertight cable 3 is in a stretched state can be judged;
s4: filling the drilled hole with engineering sand to ensure that the in-situ real-time monitoring device is fixed in the seabed in the casing pipe pulling-out process;
s5: sealing the tail end of a data transmission watertight cable 3 of the in-situ real-time monitoring device by using a watertight plug, binding a small floating ball to enable the tail end of the transmission cable to float in water, and throwing the cable into the water along a sleeve after the completion;
s6: completely pulling out the sleeve, fishing out the data transmission watertight cable 3 from the water, connecting the watertight cable with the sealed collection bin 9, and connecting the real-time communication cable 11 connected with the communication floating ball 12 with the watertight connector 10;
s7: installing the sealed collecting bin 9 on the anti-settling base 6, and then lowering the anti-settling base 6 to the surface of the seabed by using a hoisting device;
s8: the in-situ real-time monitoring device starts to carry out data measurement, acquisition and transmission according to set parameters, and can carry out real-time data transmission and remote control of an acquisition system through upper computer software;
s9: after the in-situ observation period is finished, the operation ship is driven back to the observation point position, and the in-situ real-time monitoring device and the anti-settling base 6 are recovered;
s10: the three-axis acceleration sensor 14 installed in the steel pipe 1 is used for measuring the inclination angle relative to gravity, because the length of each section of steel pipe 1 is a fixed value of 500 mm, according to the length and the angle change in three directions, the displacement in three directions can be calculated by combining the cosine theorem, the displacement at different nodes can be obtained by taking the far end as a calculation reference point in an accumulation mode, and a detailed formula is shown as follows:
wherein L is the length of the steel pipe 1,
、
、
respectively the change angles of the nth section of steel pipe 1 along the x, y and z direction axes,
、
、
is the magnitude of the displacement change.
If the wireless function of the real-time transmission of the data fails, the data acquisition and transmission equipment 4 can be taken out for data reading, so that in-situ observation data of the seabed pore pressure and slippage at different depths can be obtained, and corresponding analysis can be carried out.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The device for monitoring the sediment pore pressure and the seabed deformation in situ in real time comprises an in-situ real-time monitoring device and a data acquisition system, and is characterized in that the in-situ real-time monitoring device comprises 8 steel pipes (1) which are connected in series, every two sections of steel pipes (1) are connected through a metal corrugated pipe (2), a rubber waterproof pad (16) is arranged in the joint of the steel pipes (1) and the metal corrugated pipe (2), a triaxial acceleration sensor (14) and a temperature sensor (15) are arranged in each section of steel pipe (1), the steel pipes are connected in series through a data line in the steel pipes (1), water holes (18) are processed on the first, the third and the five steel pipes (1) from top to bottom, a pore pressure sensor (17) is arranged in each water hole (18), the bottom end of the steel pipe (1) at the bottom is processed through threads, a conical balance weight (19) is arranged through the threads, and a microprocessor (13), the top end of the steel pipe (1) positioned at the top is provided with a data transmission watertight cable (3), the interior of the steel pipe (1) is in communication connection with the triaxial acceleration sensor (14), the temperature sensor (15) and the microprocessor (13) through data lines, and the data lines are connected to a data acquisition system through the data transmission watertight cable (3);
the data acquisition system is including sealed collection storehouse (9), sealed collection storehouse (9) are two-layer about being divided into, data acquisition transmission equipment (4) are installed to the upper strata, lithium cell (5) are installed to the lower floor, the top of sealed collection storehouse (9) is equipped with watertight joint (10), the collection interface of data acquisition transmission equipment (4) passes through watertight joint (10) and is connected with the one end of data transmission watertight cable (3), the communication interface of data acquisition transmission equipment (4) passes through watertight joint (10) and connects real-time communication cable (11), communication floater (12) are connected to the other end of real-time communication cable (11), fixed L type support (8) of being equipped with on the lower part outer wall of sealed collection storehouse (9), sealed collection storehouse (9) are through L type support (8) fixed mounting in preventing subsiding base (6).
2. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation according to claim 1, wherein the steel pipe (1) is made of stainless steel material and has a length of 500 mm, the steel pipe (1) is of a tubular structure, the two ends of the steel pipe are threaded, and every two steel pipes (1) are connected through threads by using a metal corrugated pipe (2).
3. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claim 1 or 2, wherein the metal bellows (2) is made of stainless steel material.
4. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claim 1, wherein the data transmission watertight cable (3) is wrapped with a stainless steel wire mesh.
5. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claim 1, wherein the water pores (18) are externally provided with permeable stones.
6. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claim 1, wherein the real-time communication cable (11) is armored cable.
7. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claim 1, wherein the anti-settling base (6) is made of stainless steel.
8. The device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claim 1 or 6, wherein the anti-settling base (6) is in the shape of a cubic frame, and perforated discs (7) are arranged at the four corners of the bottom of the anti-settling base.
9. The deployment method of the device for in-situ real-time monitoring of sediment pore pressure and seabed deformation as claimed in claims 1 to 7, is characterized by comprising the following steps:
s1: setting acquisition frequency and sending interval parameters, and then putting the data acquisition and transmission equipment (4) into a sealed acquisition bin (9);
s2: driving the ship to an observation point position by using a positioning system of the operation ship, and anchoring to keep the ship body in a stable state; drilling the seabed of the observation point position by using the offshore drilling rig device on the operation ship, simultaneously lowering the casing pipe in the drilling process, wherein the drilling depth is not less than the length of the in-situ real-time monitoring device, and taking out the drill pipe after completion;
s3: the in-situ real-time monitoring device is lowered into a seabed borehole along the casing pipe to keep the seabed borehole in a vertical state, and whether the data transmission watertight cable (3) is in a stretched state can be judged;
s4: filling the drilled hole with engineering sand to ensure that the in-situ real-time monitoring device is fixed in the seabed in the casing pipe pulling-out process;
s5: sealing the tail end of a data transmission watertight cable (3) of the in-situ real-time monitoring device by using a watertight plug-in, binding a small floating ball to enable the tail end of the transmission cable to float in water, and then throwing the cable into the water along a sleeve;
s6: the sleeve is completely pulled out, the data transmission watertight cable (3) is fished out of the water, the watertight cable is connected with the sealed collection bin (9), and the real-time communication cable (11) connected with the communication floating ball (12) is connected with the watertight connector (10);
s7: installing the sealed collection bin (9) on the anti-sedimentation base (6), and then lowering the anti-sedimentation base (6) to the surface of the seabed by using a hoisting device;
s8: the in-situ real-time monitoring device starts to carry out data measurement, acquisition and transmission according to set parameters, and can carry out real-time data transmission and remote control of an acquisition system through upper computer software;
s9: after the in-situ observation period is finished, the operation ship is driven back to the observation point position, and the in-situ real-time monitoring device and the anti-settling base (6) are recovered;
s10: the three-axis acceleration sensor (14) installed in the steel pipe (1) is used for measuring the inclination angle relative to gravity, because the length of each section of the steel pipe (1) is 500 mm, the displacement in three directions can be calculated by combining the cosine law according to the length and the angle change in three directions, the displacement at different nodes can be obtained by taking the far end as a calculation reference point in an accumulation mode, and a detailed formula is shown as follows:
wherein L is the length of the steel pipe (1),
、
、
respectively the change angles of the nth section of steel pipe (1) along the x, y and z direction axes,
、
、
is the magnitude of the displacement change.
10. The deployment method of the device for in-situ real-time monitoring of pore pressure and seabed deformation of sediment according to claim 9, wherein in step S7, when the wireless function of real-time data transmission fails, the data acquisition and transmission equipment (4) can be taken out for data reading, so as to obtain in-situ observation data of pore pressure and slippage of seabed at different depths for analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011107339.3A CN112254864A (en) | 2020-10-16 | 2020-10-16 | Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011107339.3A CN112254864A (en) | 2020-10-16 | 2020-10-16 | Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112254864A true CN112254864A (en) | 2021-01-22 |
Family
ID=74244213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011107339.3A Pending CN112254864A (en) | 2020-10-16 | 2020-10-16 | Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112254864A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175951A (en) * | 2021-03-23 | 2021-07-27 | 浙江大学 | Deep sea hydrate in-situ three-dimensional monitoring system |
| CN113865777A (en) * | 2021-09-30 | 2021-12-31 | 中国海洋大学 | Hole pressure probe rod device capable of being automatically folded and working method thereof |
| CN114113682A (en) * | 2021-11-26 | 2022-03-01 | 中国电建集团成都勘测设计研究院有限公司 | Landslide deep displacement monitoring device |
| CN114323124A (en) * | 2021-12-14 | 2022-04-12 | 浙江大学 | Underwater superficial stratum information monitoring network system for seabed hydrate dune |
| CN114993380A (en) * | 2022-06-06 | 2022-09-02 | 中国海洋大学 | Multi-parameter monitoring sensing array and method for seabed shallow gas accumulation and overflow process |
| EP4053529A1 (en) * | 2021-03-03 | 2022-09-07 | Instytut Techniki Budowlanej | A device for measuring water pressure in soil pores comprising a pressure gauge |
| CN115127716A (en) * | 2022-09-01 | 2022-09-30 | 云南省交通投资建设集团有限公司 | Rock mass parameter in-situ test system and method by small local wall stress relief method |
| CN117288155A (en) * | 2023-10-11 | 2023-12-26 | 中国海洋大学 | Working method of in-situ observation equipment based on seabed sliding process |
| CN117288155B (en) * | 2023-10-11 | 2024-04-26 | 中国海洋大学 | Working method of in-situ observation equipment based on seabed sliding process |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1790016A (en) * | 2005-12-12 | 2006-06-21 | 中国石化集团胜利石油管理局钻井工艺研究院 | In-situ monitoring device for liquefaction of seabed soil |
| CN1940473A (en) * | 2004-01-17 | 2007-04-04 | 湖北清江水布垭工程建设公司 | Pipeline for monitoring dam panel deflection or internal deformation of dam-body |
| GB2474013A (en) * | 2009-09-18 | 2011-04-06 | Stuart Killbourn | Measuring chain tension between a riser and buoyant tank |
| CN201903348U (en) * | 2010-11-22 | 2011-07-20 | 同济大学 | Monitoring device for soil displacement and pore water pressure of seabed |
| WO2014054642A1 (en) * | 2012-10-04 | 2014-04-10 | 日鐵住金建材株式会社 | Steel pipe insertion work steel pipe strain detection structure |
| CN203785651U (en) * | 2014-03-26 | 2014-08-20 | 基康仪器股份有限公司 | Continuous displacement monitoring device and continuous displacement monitoring system |
| CN105091840A (en) * | 2015-05-04 | 2015-11-25 | 中国地质科学院探矿工艺研究所 | Guide-wheel-free inclinometer for measuring deep displacement of landslide and installation method thereof |
| CN105301193A (en) * | 2015-10-28 | 2016-02-03 | 中国海洋大学 | Seabed lateral deformation and sliding observation device and method |
| CN108571947A (en) * | 2018-04-19 | 2018-09-25 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of offshore embankment multi-point settlement monitoring system |
| KR102114980B1 (en) * | 2019-01-03 | 2020-05-26 | 부경대학교 산학협력단 | Dimensional Measuring Apparatus for Under Water Structure Having Attitude Control Unit |
| CN111351528A (en) * | 2019-12-24 | 2020-06-30 | 中国海洋大学 | Submarine boundary layer observation device and laying and recycling method thereof |
| CN111551309A (en) * | 2020-06-08 | 2020-08-18 | 中国海洋大学 | Counterweight separable assembled type pore water pressure monitoring system and laying method thereof |
-
2020
- 2020-10-16 CN CN202011107339.3A patent/CN112254864A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1940473A (en) * | 2004-01-17 | 2007-04-04 | 湖北清江水布垭工程建设公司 | Pipeline for monitoring dam panel deflection or internal deformation of dam-body |
| CN1790016A (en) * | 2005-12-12 | 2006-06-21 | 中国石化集团胜利石油管理局钻井工艺研究院 | In-situ monitoring device for liquefaction of seabed soil |
| GB2474013A (en) * | 2009-09-18 | 2011-04-06 | Stuart Killbourn | Measuring chain tension between a riser and buoyant tank |
| CN201903348U (en) * | 2010-11-22 | 2011-07-20 | 同济大学 | Monitoring device for soil displacement and pore water pressure of seabed |
| WO2014054642A1 (en) * | 2012-10-04 | 2014-04-10 | 日鐵住金建材株式会社 | Steel pipe insertion work steel pipe strain detection structure |
| CN203785651U (en) * | 2014-03-26 | 2014-08-20 | 基康仪器股份有限公司 | Continuous displacement monitoring device and continuous displacement monitoring system |
| CN105091840A (en) * | 2015-05-04 | 2015-11-25 | 中国地质科学院探矿工艺研究所 | Guide-wheel-free inclinometer for measuring deep displacement of landslide and installation method thereof |
| CN105301193A (en) * | 2015-10-28 | 2016-02-03 | 中国海洋大学 | Seabed lateral deformation and sliding observation device and method |
| CN108571947A (en) * | 2018-04-19 | 2018-09-25 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of offshore embankment multi-point settlement monitoring system |
| KR102114980B1 (en) * | 2019-01-03 | 2020-05-26 | 부경대학교 산학협력단 | Dimensional Measuring Apparatus for Under Water Structure Having Attitude Control Unit |
| CN111351528A (en) * | 2019-12-24 | 2020-06-30 | 中国海洋大学 | Submarine boundary layer observation device and laying and recycling method thereof |
| CN111551309A (en) * | 2020-06-08 | 2020-08-18 | 中国海洋大学 | Counterweight separable assembled type pore water pressure monitoring system and laying method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 契罗尼斯: "《机构和机械控制装置》", 31 January 1984 * |
| 纺织工业部纺织机械研究所: "《纺织机械常用材料选编》", 31 October 1980 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4053529A1 (en) * | 2021-03-03 | 2022-09-07 | Instytut Techniki Budowlanej | A device for measuring water pressure in soil pores comprising a pressure gauge |
| CN113175951A (en) * | 2021-03-23 | 2021-07-27 | 浙江大学 | Deep sea hydrate in-situ three-dimensional monitoring system |
| CN113175951B (en) * | 2021-03-23 | 2022-07-12 | 浙江大学 | Deep sea hydrate in-situ three-dimensional monitoring system |
| CN113865777A (en) * | 2021-09-30 | 2021-12-31 | 中国海洋大学 | Hole pressure probe rod device capable of being automatically folded and working method thereof |
| US11788409B2 (en) | 2021-09-30 | 2023-10-17 | Powerchina Huadong Engineering Corporation Limited | Auto-collapsible pore pressure probe device and operating method thereof |
| CN114113682A (en) * | 2021-11-26 | 2022-03-01 | 中国电建集团成都勘测设计研究院有限公司 | Landslide deep displacement monitoring device |
| CN114323124A (en) * | 2021-12-14 | 2022-04-12 | 浙江大学 | Underwater superficial stratum information monitoring network system for seabed hydrate dune |
| CN114993380A (en) * | 2022-06-06 | 2022-09-02 | 中国海洋大学 | Multi-parameter monitoring sensing array and method for seabed shallow gas accumulation and overflow process |
| CN115127716A (en) * | 2022-09-01 | 2022-09-30 | 云南省交通投资建设集团有限公司 | Rock mass parameter in-situ test system and method by small local wall stress relief method |
| CN117288155A (en) * | 2023-10-11 | 2023-12-26 | 中国海洋大学 | Working method of in-situ observation equipment based on seabed sliding process |
| CN117288155B (en) * | 2023-10-11 | 2024-04-26 | 中国海洋大学 | Working method of in-situ observation equipment based on seabed sliding process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112254864A (en) | Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method | |
| CN106802132B (en) | A kind of penetration type Multifunction fishing bottom sediment in-situ observation feeler lever | |
| CN105301193B (en) | Sea bed lateral deformation and slip observation device and method | |
| CN100564705C (en) | Packaged technology for underwater in situ automatically monitoring | |
| CN111348148B (en) | Separable full-profile subsurface buoy observation system and use method | |
| AU2019100321A4 (en) | A multistage penetrating in-situ device and method to observe sand waves on the seabed based on resistivity probe | |
| CN107631720A (en) | Seabed sand waves original position real-time observation device and method | |
| CN113432648B (en) | System and method for long-term observation of seabed soft clay deformation and sliding induced by deep-sea internal waves | |
| CN1790017A (en) | Multifunctional multi-channel detection rod for monitoring pore water pressure of seabed soil | |
| CN106437698A (en) | Underwater platform for exploration sampling or in-situ test and using method thereof | |
| CN110409399B (en) | Method for transversely and continuously measuring soil body parameters of soft soil field | |
| CN104792452B (en) | A kind of automatic lifting without cable formula deep-sea floor pore water pressure long-term observation device | |
| CN107807406A (en) | Abyssal floor rheology observation device based on differential pressure measurement | |
| CN203078741U (en) | In-situ detection device of strength of beach and shallow sea sediments | |
| CN115598217B (en) | Device and method for in-situ measurement of low-frequency acoustic characteristics of seabed sediment layer | |
| CN105911612B (en) | A kind of multifunctional in-situ long-term observation device | |
| CN110424363B (en) | Long-distance continuous measurement method for soil body strength parameters of soft soil field | |
| CN111551309B (en) | Counterweight separable assembled type pore water pressure monitoring system and laying method thereof | |
| CN106956758B (en) | Multisensor deep-sea shelter based on seabed geodesic control net | |
| CN107747306A (en) | A kind of cross with Yu Haiyang ultra-soft soil in-situ test flows feeler inspection probe entirely | |
| CN214883526U (en) | Building foundation settlement monitoring system | |
| CN114047316A (en) | Device and method for detecting slope stability | |
| CN105507225B (en) | One kind can stop formula goalpost shape pore pressure probe | |
| CN105806283A (en) | Landslide deep displacement real-time monitoring system and method based on stay wire posture interpreting | |
| CN105866251A (en) | Acoustic emission sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210122 |
|
| RJ01 | Rejection of invention patent application after publication |