CN110952521A - A kind of marine static probe detection equipment and method - Google Patents
A kind of marine static probe detection equipment and method Download PDFInfo
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- CN110952521A CN110952521A CN201911389577.5A CN201911389577A CN110952521A CN 110952521 A CN110952521 A CN 110952521A CN 201911389577 A CN201911389577 A CN 201911389577A CN 110952521 A CN110952521 A CN 110952521A
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Abstract
本发明涉及海洋地质勘测的计量/检测技术领域，公开了一种海洋静力触探仪检测设备，包括壳体、压力罐、测力仪、温度调节系统以及压力调节系统，壳体内设有温度调节腔，温度调节系统和压力罐设于温度调节腔内，压力罐设有压力腔，海洋静力触探仪安装于压力腔内，承压底座设有圆锥凹槽和圆柱凹槽，罐盖设有往压力腔内施加环境压力的第一导管，压力调节系统和测力仪设于承压底座上。通过温度调节系统为压力罐提供温度稳定且均匀的液体介质，保证测量结果的准确性，并实现对孔隙水压力、锥尖阻力和侧壁摩阻力的计量/检测，在计量/检测全过程中提供了满足标准的恒稳态海洋模拟温度和压力环境。本发明还提供一种海洋静力触探仪检测方法。
The invention relates to the technical field of measurement/detection of marine geological survey, and discloses a marine static penetrometer detection device, comprising a shell, a pressure tank, a force measuring instrument, a temperature adjustment system and a pressure adjustment system. The shell is provided with a temperature The regulating chamber, the temperature regulating system and the pressure tank are arranged in the temperature regulating chamber. The pressure tank is provided with a pressure chamber. The marine static probe is installed in the pressure chamber. A first conduit for applying ambient pressure into the pressure chamber is provided, and the pressure regulating system and the force measuring instrument are arranged on the pressure-bearing base. Provide a stable and uniform liquid medium for the pressure tank through the temperature adjustment system to ensure the accuracy of the measurement results, and realize the measurement/detection of pore water pressure, cone tip resistance and sidewall friction resistance, in the whole process of measurement/detection Provides a steady-state ocean simulation temperature and pressure environment that meets the criteria. The invention also provides a detection method of the marine static probe.
Description
Technical Field
The invention relates to the technical field of measurement/detection of marine geological survey, in particular to a device and a method for detecting a marine static penetrometer.
Background
Marine geological survey is increasingly gaining attention as a necessary link for marine resource development, marine engineering construction and marine ecological environment protection. The ocean static sounding is used as an important means of ocean geological survey, the high-efficiency equipment is used for carrying out quantity value tracing/detection on related products, the survey data quality is guaranteed, and the method has very important significance.
The ocean static sounding utilizes the principle of quasi-static effect, obtains data such as cone tip resistance, side wall friction resistance, pore water pressure and the like through measurement, further calculates soil property parameters such as shear strength of cohesive soil, relative density of granular soil, compression modulus of soil and the like, and realizes the purposes of carrying out investigation such as division and soil type discrimination on a seabed soil layer. Therefore, the product quantity value tracing/detection of the ocean static penetrometer needs to measure/detect the cone tip resistance, the side wall friction resistance and the pore water pressure, but the existing measuring/detecting equipment cannot use a single device to carry out full measurement/detection on three parameters, the influence of temperature and pressure on the data acquired by the ocean static penetrometer is not considered, particularly, the influence of the temperature on the measurement result of the ocean static penetrometer, particularly the measurement result of the pore water pressure is large, and the efficiency and the accuracy of the measuring/detecting work are reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to realize the quantity value tracing/detection of three parameters of the ocean static penetrometer and ensure the accuracy of the measuring result.
In order to solve the technical problems, the invention provides a metering/detecting device of an ocean static penetrometer, which comprises a shell, a pressure tank, a dynamometer, a temperature regulating system and a pressure regulating system, wherein a temperature regulating cavity is arranged in the shell, the temperature regulating system and the pressure tank are both arranged in the temperature regulating cavity, the pressure tank is provided with a pressure cavity for accommodating the ocean static penetrometer, the top of the pressure tank is provided with a tank cover for fixing the ocean static penetrometer, a pressure-bearing base is arranged in the pressure cavity, the pressure-bearing base is provided with a conical groove and a cylindrical groove which are matched and abutted with the bottom of the ocean static penetrometer, the tank cover is provided with a first guide pipe, one end of the first guide pipe is communicated with the pressure cavity, and the other end of the first guide pipe is used for being connected with a first pressure controller, the pressure regulating system and the dynamometer are arranged on the pressure-bearing base.
As an optimal scheme, the cylindrical groove is formed in the top surface of the pressure-bearing base, the conical groove is formed in the bottom wall of the cylindrical groove, and the pressure adjusting system is arranged at the bottom of the pressure-bearing base.
Preferably, the pressure regulating system comprises a piston and an elastic element, the piston is connected with the pressure-bearing base through the elastic element, the pressure tank is provided with a second guide pipe, one end of the second guide pipe is communicated with the pressure chamber, the other end of the second guide pipe is used for being connected with a second pressure controller, and the second guide pipe is located below the piston.
Preferably, a bottom plate of the housing is provided with a positioning ring and a sealing element, the positioning ring is sleeved outside the bottom end of the pressure tank, and the sealing element is mounted at the bottom end of the pressure chamber.
Preferably, the top plate of the housing is provided with an opening, and the tank cover is arranged on the opening in a penetrating manner.
As the preferred scheme, temperature regulation system includes refrigerator, refrigeration return circuit, heater and thermometer, be equipped with the baffle in the casing, the baffle will the temperature regulation chamber is separated into from last liquid circulation district and the installing zone that distributes down, the refrigerator with refrigeration return circuit is connected, the refrigerator is located in the installing zone, refrigeration return circuit with the heater install in the liquid circulation district, the thermometer is located on the baffle.
As a preferred scheme, the installation structure further comprises a first circulating pump arranged in the installation area, a first water inlet pipe and a first water outlet pipe of the first circulating pump are arranged on the partition plate, the first water inlet pipe and the first water outlet pipe are communicated with the liquid circulation area, and the first water outlet pipe is provided with an elbow with a horizontal water outlet direction.
Preferably, the pressure chamber further comprises a second circulating pump arranged in the mounting area, a second water inlet pipe of the second circulating pump is arranged on the partition plate, the second water inlet pipe is communicated with the liquid circulating area, a second water outlet pipe of the second circulating pump is arranged on the pressure tank, and the second water outlet pipe is communicated with the inside of the pressure chamber.
The invention also provides a detection method of the detection equipment of the ocean static penetrometer, which comprises the following steps:
adding a liquid medium into the shell, setting a preset temperature value of the liquid, and starting a temperature adjusting system until the actual temperature value of the liquid reaches the preset temperature value;
the method comprises the following steps that a marine static penetrometer is installed in a pressure cavity of a pressure tank through a tank cover, standard environmental pressure is applied to the pressure cavity through a first guide pipe, a pore water pressure value is obtained through the marine static penetrometer, and the standard environmental pressure value and the pore water pressure value are compared, detected and subjected to value tracing;
applying a first environmental pressure to the pressure cavity through the first conduit, applying a first driving force to the pressure-bearing base through the pressure adjusting system, acquiring a numerical value of the first driving force by using a dynamometer, acquiring a numerical value of cone tip resistance by using the marine static penetrometer, and comparing, detecting and tracing the numerical value of the first driving force and the numerical value of the cone tip resistance;
the cone tip of the ocean static penetrometer is taken out, second ambient pressure is applied to the pressure cavity through the first guide pipe, second driving force is applied to the pressure bearing base through the pressure adjusting system, the force measuring instrument is used for obtaining numerical values of the second driving force, the ocean static penetrometer is used for obtaining numerical values of side wall friction force, and the numerical values of the second driving force and the numerical values of the side wall friction force are compared, detected and traced to the source.
As a preferred scheme, the step of adding a liquid medium in the shell, setting a preset temperature value of the liquid, and starting the temperature regulation system until the actual temperature value of the liquid reaches the preset temperature value further comprises:
starting a first circulating pump to drive the liquid to circularly flow in the temperature adjusting cavity along the horizontal direction;
and starting the second circulating pump to drive the liquid to circularly flow between the temperature adjusting cavity and the pressure cavity.
Compared with the prior art, the detection equipment of the ocean static penetrometer has the beneficial effects that:
the pressure tank is arranged in the shell, a stable and uniform liquid medium is provided for the pressure tank through the temperature regulating system, the accuracy of a measuring result is ensured, the marine static sounding instrument is arranged in the pressure cavity by utilizing the tank cover and the pressure-bearing base, and standard environmental pressure is applied to the pressure cavity through the first guide pipe, so that the measurement/detection of pore water pressure is realized; placing the cone tip of the ocean static penetrometer in the cone groove, applying a driving force to a pressure-bearing base through the pressure adjusting system, and comparing the cone tip resistance value of the ocean static penetrometer by using the driving force value measured by the dynamometer so as to realize measurement/detection of the cone tip resistance; unloading the conical tip of the ocean static penetrometer, placing the ocean static penetrometer in the cylindrical groove, applying driving force to the pressure-bearing base through the pressure adjusting system, and comparing the side wall friction resistance value of the ocean static penetrometer by using the driving force value measured by the dynamometer to realize the measurement/detection of the side wall friction resistance. The device can complete high-precision measurement/detection of three parameters of the ocean static penetrometer, fully considers the influence of environmental temperature and pressure on measurement/detection data of the ocean static penetrometer, provides a steady ocean simulation temperature and pressure environment meeting the standard in the whole measurement/detection process, and has the advantages of compact structure, convenience in maintenance and debugging and the like.
Drawings
FIG. 1 is a schematic diagram of the internal structure of the detection device of the marine static penetrometer according to the preferred embodiment of the invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
FIG. 3 is a schematic diagram of a partition installation structure in the detection equipment of the marine static penetrometer according to the preferred embodiment of the invention.
FIG. 4 is an exploded view of a pressure-bearing base, a fixing ring and a force measuring device in the detection device of the marine static penetrometer according to the preferred embodiment of the invention.
In the figure: 1. a housing; 2. a pressure tank; 3. a force measuring instrument; 4. an ocean static penetrometer; 5. a can lid; 6. a pressure-bearing base; 7. a conical recess; 8. a cylindrical groove; 9. a first conduit; 10. a piston; 11. an elastic member; 12. a second conduit; 13. a fixing ring; 14. a positioning ring; 15. a seal member; 16. lifting the handle; 17. a refrigerator; 18. a refrigeration circuit; 19. a heater; 20. a thermometer; 21. a partition plate; 22. a first circulation pump; 23. a first water inlet pipe; 24. a first water outlet pipe; 25. bending the pipe; 26. a second circulation pump; 27. a second water inlet pipe; 28. a second water outlet pipe; 29. a universal wheel.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used in a broad sense, and for example, the terms "connected," "connected," and "fixed" may be fixed, detachable, or integrated; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, a preferred embodiment of the present invention provides an ocean static penetrometer detection device, which includes a housing 1, a pressure tank 2, a force measuring instrument 3, a temperature adjusting system and a pressure adjusting system, wherein a temperature adjusting cavity is arranged in the housing 1, the temperature adjusting system and the pressure tank 2 are arranged in the temperature adjusting cavity, the pressure tank 2 is provided with a pressure cavity for accommodating the ocean static penetrometer 4, a tank cover 5 for fixing the ocean static penetrometer 4 is arranged on the top of the pressure tank 2, a pressure-bearing base 6 is arranged in the pressure cavity, a conical groove 7 and a cylindrical groove 8 are arranged on the pressure-bearing base 6 for being in fit abutment with the bottom of the ocean static penetrometer 4, the tank cover 5 is provided with a first conduit 9, one end of the first conduit 9 is communicated with the pressure cavity, and the other end of the first conduit 9 is used for being connected with a first pressure controller, the pressure regulating system and the dynamometer 3 are arranged on the pressure-bearing base 6.
The ocean static penetrometer detection equipment based on the technical characteristics is characterized in that the pressure tank 2 is arranged in the shell 1, a stable and uniform liquid medium with stable temperature is provided for the pressure tank 2 through the temperature regulating system, the accuracy of a measurement result is ensured, the ocean static penetrometer 4 is arranged in the pressure cavity by utilizing the tank cover 5 and the pressure bearing base 6, and standard environmental pressure is applied to the pressure cavity through the first guide pipe 9, so that the measurement/detection of pore water pressure is realized; placing the cone tip of the ocean static penetrometer 4 in the cone groove 7, applying a driving force to the pressure-bearing base 6 through the pressure adjusting system, and comparing the cone tip resistance value of the ocean static penetrometer 4 by using the driving force value measured by the dynamometer 3 to realize the measurement/detection of the cone tip resistance; unloading the conical tip of the ocean static penetrometer 4, placing the ocean static penetrometer 4 in the cylindrical groove 8, applying driving force to the pressure-bearing base 6 through the pressure adjusting system, and comparing the side wall friction resistance value of the ocean static penetrometer 4 by using the driving force value measured by the dynamometer 3 to realize the measurement/detection of the side wall friction resistance. The device can complete high-precision measurement/detection of three parameters of the ocean static penetrometer 4, fully considers the influence of environmental temperature and pressure on the measurement/detection data of the ocean static penetrometer 4, provides a steady ocean simulation temperature and pressure environment meeting the standard in the whole measurement/detection process, and has the advantages of compact structure, convenience in maintenance and debugging and the like.
The first line 9 is used for connecting a first pressure controller of an external device, by means of which a standard or corresponding ambient pressure is provided for the pressure chamber. Even stable temperature environment can be built to casing 1, pressure tank 2 can provide the pressure environment of permanent steady state, under the combined action of temperature and pressure, satisfies the measurement/the detection requirement of 4 parameters of ocean static penetrometer.
As shown in fig. 2, in this embodiment, the cylindrical groove 8 is provided on the top surface of the pressure-bearing base 6, the conical groove 7 is provided on the bottom wall of the cylindrical groove 8, the conical groove 7 is embedded in the cylindrical groove 8, and the axis of the conical groove 7 and the axis of the cylindrical groove 8 are on the same straight line, so that the conical tip of the marine static sounding instrument 4 can be directly installed on the cylindrical groove 8 at the same position after the conical tip is detached, the installation and detachment are more flexible, and the conical groove 7 and the conical tip of the marine static sounding instrument 4 have the same specification. The conical groove 7 is used for wrapping the conical tip to measure/detect the resistance of the conical tip, the conical tip of the ocean static penetrometer 4 is detached when the side wall friction force is measured, and the side wall of the ocean static penetrometer 4 abuts against the side wall of the cylindrical groove 8. The dynamometer 3 is fixed in on the cylinder recess 8 to obtain the numerical value of the corresponding drive power of applying, can regard as the calibrator that the awl point resistance of ocean static penetrometer 4, lateral wall frictional resistance value traced to the source, dynamometer 3's wire along the inner wall of overhead tank 2 is arranged and is worn out from the end to the top casing 1 connects outside display instrument to be equipped with sealing rubber, pressure governing system locates the bottom of pressure-bearing base 6 is convenient for do pressure-bearing base 6 applies stable ascending drive power.
Further, as shown in fig. 4, a fixing ring 13 is disposed on the pressure-bearing base 6, and the fixing ring 13 is disposed above the force measuring instrument 3 to fix the force measuring instrument 3.
Further, the pressure regulating system comprises a piston 10 and an elastic member 11, the piston 10 is connected with the pressure-bearing base 6 through the elastic member 11, the pressure tank 2 is provided with a second conduit 12 for applying a driving pressure acting on the piston 10 into the pressure chamber, one end of the second conduit 12 is communicated with the pressure cavity, the other end of the second conduit 12 is used for being connected with a second pressure controller, the second conduit 12 is located below the piston 10, the second conduit 12 passes through a side plate of the housing 1, a second pressure controller for connecting with external equipment, which is used to provide driving pressure for the pressure chamber, and drives the piston 10 to move upwards, the elastic piece 11 is a spring, plays a role in stabilizing and buffering, and achieves the purpose of providing upward stable force for the pressure-bearing base 6.
Further, the first conduit 9 and the second conduit 12 are provided with check valves to prevent leakage of the liquid medium.
As shown in fig. 1, in this embodiment, the bottom plate of the housing 1 is provided with a positioning ring 14 and a sealing member 15 for installing the pressure tank 2, the positioning ring 14 is sleeved outside the bottom end of the pressure tank 2, the sealing member 15 is installed at the bottom end of the pressure chamber, the positioning ring 14 is annular, the positioning ring 14 is used for limiting the position of the pressure tank 2, the sealing member 15 is detachably connected to the pressure tank 2 and screwed into the bottom of the pressure tank 2 in a threaded manner, so that the pressure tank 2 can be conveniently maintained without damaging the sealing performance of the pressure tank 2 by using a hexagon wrench, and the sealing member 15 and the tank cover 5 are matched to form a sealed cavity of the pressure chamber.
In this embodiment, the top plate of the housing 1 is provided with an opening leading to the pressure chamber, the tank cover 5 is arranged on the opening in a penetrating manner, and the tank cover 5 is connected between the opening and the pressure tank 2 through sealing rubber, so that the tank cover 5 is convenient to detach and mount.
Furthermore, the center of the tank cover 5 is provided with a fixed groove with the same specification as that of the ocean static penetrometer 4, and the groove is internally provided with threads, so that the ocean static penetrometer 4 can be detachably mounted. The top of the can cover 5 is provided with a lifting handle 16, the lifting handle 16 is used for lifting the can cover 5, and when the can cover 5 is used, the can cover 5 can be fixed on the top plate of the shell 1 through screws. Furthermore, the pressure tank 2 is also screwed to the base plate of the housing 1.
In this embodiment, the temperature adjusting system includes a refrigerator 17, a refrigeration loop 18, a heater 19 and a thermometer 20, the housing 1 is provided with a partition plate 21 for dividing the temperature adjusting cavity into a liquid circulation region and an installation region for installing components, the refrigerator 17 is connected to the refrigeration loop 18, the refrigerator 17 is located in the installation region, the refrigeration loop 18 and the heater 19 are installed in the liquid circulation region, and the thermometer 20 is located on the partition plate 21. The baffle 21 will the installing zone is kept apart out to the temperature regulation chamber, and the installation of the components and parts of part that can not direct contact liquid of being convenient for, refrigerator 17 passes through refrigerating circuit 18 cools down for liquid medium, heater 19 directly heats at liquid medium, realizes the cooling heating function to liquid medium to control liquid medium's temperature stability, thermometer 20 is platinum resistance thermometer 20 for temperature control's feedback makes the actual temperature numerical value of liquid reaches preset temperature numerical value.
Further, casing 1 is still including locating the first circulating pump 22 of installing zone, first inlet tube 23 and first outlet pipe 24 of first circulating pump 22 are located on the baffle 21, just first inlet tube 23 with first outlet pipe 24 accesss to the liquid circulation district, first outlet pipe 24 is equipped with the elbow 25 that has the horizontal water direction of going out, as the elbow 25 that fig. 3 shows for the flow circulation of control liquid medium, the homogeneity of control temperature, wherein, through elbow 25 realizes that the water direction is clockwise or anticlockwise for the level, realizes that liquid medium stirs more evenly.
Further, casing 1 is still including locating the second circulating pump 26 of installing zone, second circulating pump 26's second inlet tube 27 is located on the baffle 21, just second inlet tube 27 leads to the liquid circulation district, second circulating pump 26's second outlet pipe 28 is located on the overhead tank 2, just second outlet pipe 28 accesss to the inside of pressure chamber for the change speed of the liquid temperature in the pressure chamber of overhead tank 2, and guarantee the liquid temperature homogeneity in the pressure chamber. Grooves for fixing the second water outlet pipe 28 are formed in the outer wall and the inner wall of the pressure tank 2, so that the influence of a path through which the second water outlet pipe 28 passes on the sealing performance of the pressure tank 2 is avoided.
In this embodiment, four corners of the bottom plate of the housing 1 are further provided with universal wheels 29 and brake devices, and the brake devices are arranged on the universal wheels 29 to realize the overall movement and stop of the device.
In the present embodiment, the pressure tank 2 is made of a high-strength wear-resistant metal material, preferably aluminum bronze, and the liquid medium in the housing 1 is made of alcohol or antifreeze. According to actual requirements, the temperature control range of liquid in the shell 1 is (-10-40) DEG C, and the pressure bearing range of the pressure tank 2 is (0-30) MPa.
The invention also provides a metering/detecting method of the ocean static penetrometer, which comprises the following steps:
adding a liquid medium into the shell 1, setting a preset temperature value of the liquid, and starting a temperature adjusting system until the actual temperature value of the liquid reaches the preset temperature value;
the method comprises the following steps of installing a marine static penetrometer 4 in a pressure cavity of a pressure tank 2 through a tank cover 5, applying standard environmental pressure into the pressure cavity through a first guide pipe 9, acquiring a pore water pressure value by using the marine static penetrometer 4, and comparing and detecting/tracing the value of the standard environmental pressure with the value of the pore water pressure;
applying a first environmental pressure to the pressure cavity through the first conduit 9, applying a first driving force to the pressure-bearing base 6 through the pressure adjusting system, acquiring a numerical value of the first driving force by using the dynamometer 3, acquiring a numerical value of cone tip resistance by using the marine static penetrometer 4, and comparing, detecting/tracing the numerical value of the first driving force with the numerical value of the cone tip resistance;
will ocean static penetrometer 4's awl point takes out, through first pipe 9 toward apply second ambient pressure in the pressure chamber, do through pressure governing system pressure-bearing base 6 applys the second drive power, utilize dynamometer 3 acquires the numerical value of second drive power, utilizes ocean static penetrometer 4 acquires the numerical value of lateral wall frictional resistance, will the numerical value of second drive power with the numerical value of lateral wall frictional resistance carries out the comparison and detects/the quantity value is traced to the source.
According to the ocean static penetrometer measuring/detecting method based on the technical characteristics, the temperature of the liquid medium is controlled, so that the influence of the temperature on the measuring/detecting data of the ocean static penetrometer 4 is avoided, the accuracy of the measuring/detecting work is ensured, meanwhile, the temperature of the liquid medium can be controlled, and the measuring/detecting of the pore water pressure under different temperature conditions is realized by applying the standard environmental pressure in the pressure cavity; the measurement/detection of cone tip resistance under different temperature and pressure environmental conditions is realized by applying a first environmental pressure to the pressure cavity and applying a first driving force acting on the cone tip of the marine static penetrometer 4 to the pressure-bearing base 6; after the conical tip of the marine static penetrometer 4 is detached, a second environmental pressure is applied to the pressure cavity and a second driving force acting on the marine static penetrometer 4 is applied to the pressure-bearing base 6, so that the measurement/detection of the frictional resistance of the side wall under different temperature and pressure environmental conditions is realized. The measuring/detecting method is simple and quick in process, can realize measuring/detecting of three parameters in a short time, and ensures the accuracy of results.
Further, adding a liquid medium into the shell 1, setting a preset temperature value of the liquid, and starting the temperature adjusting system until the actual temperature value of the liquid reaches the preset temperature value, the method further comprises the following steps: starting the first circulating pump 22 to drive the liquid to circularly flow in the horizontal direction in the temperature adjusting cavity; and starting the second circulating pump 26 to drive the liquid to circularly flow between the temperature adjusting cavity and the pressure cavity, so that the circulating stirring of the liquid medium is realized, and the change speed of the liquid temperature in the pressure cavity of the pressure tank 2 is accelerated.
Further, after the step of the actual temperature value of the liquid reaching the preset temperature value, the method further includes: the second circulation pump 26 is switched off.
It can be clearly understood by those skilled in the art that, for a more convenient and concise description, the specific working process of the processing method may refer to the corresponding working process of the foregoing device, and is not described herein again.
To sum up, the embodiment of the present invention provides a measurement/detection device and a measurement/detection method for an ocean static penetrometer, including the following advantages: (1) the high-precision metering/detection of three parameters (pore water pressure, cone tip resistance and side wall friction resistance) of the ocean static penetrometer 4 can be completed by using one device; (2) stable and uniform temperature and pressure are provided for a liquid medium, particularly, the influence of the temperature on the metering/detecting data of the marine static penetrometer 4 is avoided, and a steady-state marine simulated temperature and pressure environment meeting the standard is provided in the whole metering/detecting process; (3) the liquid circulation of the temperature adjusting cavity and the pressure cavity is realized, and the liquid temperature change speed in the pressure cavity is accelerated; (4) the overall structure layout of the equipment is compact, part of components can be flexibly installed and disassembled, and the maintenance and debugging are convenient.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An ocean static penetrometer detection device is characterized by comprising a shell, a pressure tank, a dynamometer, a temperature adjusting system and a pressure adjusting system, a temperature adjusting cavity is arranged in the shell, the temperature adjusting system and the pressure tank are both arranged in the temperature adjusting cavity, the pressure tank is provided with a pressure cavity for accommodating the ocean static penetrometer, the top of the pressure tank is provided with a tank cover for fixing the ocean static penetrometer, a pressure-bearing base is arranged in the pressure cavity, a conical groove and a cylindrical groove which are matched and abutted with the bottom of the ocean static penetrometer are arranged on the pressure-bearing base, the tank cover is provided with a first guide pipe, one end of the first guide pipe is communicated with the pressure cavity, the other end of the first guide pipe is used for being connected with a first pressure controller, and the pressure regulating system and the dynamometer are arranged on the pressure-bearing base.
2. The ocean static penetrometer detection device of claim 1, wherein the cylindrical groove is formed in a top surface of the pressure-bearing base, the conical groove is formed in a bottom wall of the cylindrical groove, and the pressure regulating system is arranged at a bottom of the pressure-bearing base.
3. The ocean static penetrometer detection device according to claim 2, wherein the pressure regulating system comprises a piston and an elastic member, the piston is connected with the pressure-bearing base through the elastic member, the pressure tank is provided with a second conduit, one end of the second conduit is communicated with the pressure cavity, the other end of the second conduit is used for being connected with a second pressure controller, and the second conduit is located below the piston.
4. The marine static penetrometer detection device according to claim 1, wherein the bottom plate of the housing is provided with a positioning ring and a sealing member, the positioning ring is sleeved outside the bottom end of the pressure tank, and the sealing member is mounted at the bottom end of the pressure chamber.
5. The ocean static penetrometer detection device of claim 1, wherein the top plate of the housing is provided with an opening, and the tank cover is arranged on the opening in a penetrating manner.
6. The ocean static penetrometer detection device according to claim 1, wherein the temperature adjustment system comprises a refrigerator, a refrigeration loop, a heater and a thermometer, a partition board is arranged in the shell, the partition board divides the temperature adjustment cavity into a liquid circulation area and an installation area which are distributed from top to bottom, the refrigerator is connected with the refrigeration loop, the refrigerator is located in the installation area, the refrigeration loop and the heater are installed in the liquid circulation area, and the thermometer is arranged on the partition board.
7. The ocean static penetrometer detection device of claim 6, further comprising a first circulating pump disposed in the mounting area, wherein a first water inlet pipe and a first water outlet pipe of the first circulating pump are disposed on the partition plate, the first water inlet pipe and the first water outlet pipe lead to the liquid circulation area, and the first water outlet pipe is provided with an elbow having a horizontal water outlet direction.
8. The ocean static penetrometer detection device of claim 6, further comprising a second circulation pump disposed in the mounting area, wherein a second water inlet pipe of the second circulation pump is disposed on the partition plate, the second water inlet pipe leads to the liquid circulation area, a second water outlet pipe of the second circulation pump is disposed on the pressure tank, and the second water outlet pipe leads to the inside of the pressure chamber.
9. A detection method based on the detection equipment of the ocean static penetrometer as claimed in any one of the claims 1 to 8, characterized by comprising the following steps:
adding a liquid medium into the shell, setting a preset temperature value of the liquid, and starting a temperature adjusting system until the actual temperature value of the liquid reaches the preset temperature value;
the method comprises the following steps that a marine static penetrometer is installed in a pressure cavity of a pressure tank through a tank cover, standard environmental pressure is applied to the pressure cavity through a first guide pipe, a pore water pressure value is obtained through the marine static penetrometer, and the standard environmental pressure value and the pore water pressure value are compared, detected and subjected to value tracing;
applying a first environmental pressure to the pressure cavity through the first conduit, applying a first driving force to the pressure-bearing base through the pressure adjusting system, acquiring a numerical value of the first driving force by using a dynamometer, acquiring a numerical value of cone tip resistance by using the marine static penetrometer, and comparing, detecting and tracing the numerical value of the first driving force and the numerical value of the cone tip resistance;
the cone tip of the ocean static penetrometer is taken out, second ambient pressure is applied to the pressure cavity through the first guide pipe, second driving force is applied to the pressure bearing base through the pressure adjusting system, the force measuring instrument is used for obtaining numerical values of the second driving force, the ocean static penetrometer is used for obtaining numerical values of side wall friction force, and the numerical values of the second driving force and the numerical values of the side wall friction force are compared, detected and traced to the source.
10. The method according to claim 9, wherein the steps of adding a liquid medium into the housing, setting a preset temperature value of the liquid, and starting the temperature regulating system until the actual temperature value of the liquid reaches the preset temperature value further comprise:
starting a first circulating pump to drive the liquid to circularly flow in the temperature adjusting cavity along the horizontal direction;
and starting the second circulating pump to drive the liquid to circularly flow between the temperature adjusting cavity and the pressure cavity.
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| CN113552007A (en) * | 2021-07-15 | 2021-10-26 | 大连理工大学 | Deep-sea soft soil shear strength and pore pressure factor testing system and testing method |
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