A multifunctional high-precision combined in-situ test probe

Abstract

The present invention discloses a multifunctional high-precision combined in-situ test probe, comprising: a static data acquisition functional section, which is detachably connected from bottom to top, comprising: a first cylinder, a tapered contact probe being screwed onto the inner thread of the lower end of the first cylinder, and a friction cylinder being sleeved on the outer wall of the first cylinder; a resistivity data acquisition functional section, which comprises a second cylinder, one end of which is detachably connected to the static data acquisition functional section, and an electrode ring group being provided on the outer wall of the second cylinder; a seismic wave data acquisition functional section, which comprises a third cylinder, one end of which is detachably connected to the resistivity data acquisition functional section, and a triaxial geophone being provided in the third cylinder; a soil sample collector, which is a cylindrical structure with a conical bottom, the third cylinder being detachably inserted into the soil sample collector, and a plurality of collection holes being provided at the bottom of the soil sample collector. The multifunctional high-precision combined in-situ test probe has a compact structure, can collect multiple groups of parameters and has an in-situ soil sampling function.

Description

Technical Field

[0001] The present invention relates to the field of static penetration of marine soil layers, and more particularly to a multifunctional high-precision combined in-situ testing probe. Background Art

[0002] With the development and progress of society, the research on geotechnical disciplines is also constantly developing. In the 1940s, the Dutch first carried out static penetration testing of soil layers. Static penetration testing uses mechanical or hydraulic means to press a metal probe into the soil layer, record the feedback from the probe, such as penetration resistance and side wall friction, and analyze the composition of the soil layer based on the data. In the subsequent development of static penetration testing, countries have gradually improved the metal probes to meet various needs, such as adding hydrostatic pressure sensors, inclination sensors, and temperature sensors to the metal probes to obtain more static data, making special resistivity probes to further obtain detailed soil parameters by detecting soil conductivity, and making probes with detectors to collect shear wave velocity of the soil. For example, Geotech and vandenberg in Europe have a series of modular products, which add additional resistivity modules and seismic wave detection modules based on static penetration probes to meet various application environments.

[0003] With the gradual development of offshore resources, seabed soil layer detection is crucial to the safety of projects such as oil and gas platforms and submarine pipelines. The mechanical properties, liquefaction characteristics, and shear waves of the seabed soil layer need to be clarified, and soil samples need to be collected to cooperate with data collection. However, due to the environmental constraints of seabed detection, if you want to fully obtain seabed soil layer information using existing technical means, you need to replace the probe many times. This process has low on-site exploration efficiency and has certain difficulties in efficiency and accuracy in subsequent data processing. The patent with authorization number CN203160221U discloses a static penetration probe with multiple functions such as static penetration, soil resistivity detection, and soil shear wave velocity detection. However, its internal composition and probe structure are not disclosed, and there is no collection function for seabed soil. Therefore, it is necessary to invent a probe suitable for seabed soil layer survey, with multiple data collection functions and capable of collecting soil samples. Summary of the Invention

[0004] An object of the present invention is to provide a multifunctional high-precision combined in-situ test probe, which meets the requirements of in-situ collection of multiple sets of data such as conventional static penetration data, soil resistivity data, and soil shear wave velocity data, and is a multifunctional probe with in-situ soil sample collection function.

[0005] To achieve these objectives and other advantages according to the present invention, according to one aspect of the present invention, a multifunctional high-precision combined in-situ test probe is provided, which includes:

[0006] The static data acquisition functional section includes a first cylinder, a conical contact probe is screwed into the internal thread of the lower end of the first cylinder, an inclination sensor and a water pressure sensor are respectively installed at the upper and lower ends of the inner cylinder of the first cylinder, a cone pressure sensor and a friction sensor are attached to the outer wall of the first cylinder, and a friction cylinder is sleeved on the outer side of the friction sensor. The water pressure sensor, cone pressure sensor, friction sensor, and inclination sensor are electrically connected to the static data transmitter;

[0007] The resistivity data acquisition functional section includes a second cylinder, one end of which is detachably connected to the static data acquisition functional section, an insulating outer cylinder being sheathed on the outer wall of the second cylinder, an electrode ring group being electrically connected to the resistivity data transmitter;

[0008] The seismic wave data acquisition functional section includes a third cylinder, one end of which is detachably connected to the resistivity data acquisition functional section, and a triaxial geophone is disposed in the third cylinder, the triaxial geophone being electrically connected to the seismic wave data transmitter;

[0009] The soil sample collector is a cylindrical structure with a conical bottom. The third cylinder can be detachably inserted into the soil sample collector. The diameter of the soil sample collector is larger than that of the third cylinder. A plurality of collection holes are provided at the bottom of the soil sample collector.

[0010] Preferably, threads are provided on both the inner and outer sides of the upper end of the first cylinder, a sealing ring and a first adapter cylinder are screwed in sequence on the outer thread of the upper end of the first cylinder, a first fixed cylinder is connected to the inner thread of the upper end of the first cylinder, the static data transmitter and the inclination sensor are fixed in the first fixed cylinder, and the inner wall of the friction cylinder is connected to the first cylinder through the friction sensor.

[0011] Preferably, a porous water channel is provided in the conical probe, the porous water channel has a side water channel opening on the side of the conical probe, the side water channel opening is fixedly sealed with a permeable stone, the porous water channel has an upper water channel opening at the center of the top surface of the conical probe, and the upper surface of the conical probe is in close contact with the lower surface of the water pressure sensor.

[0012] Preferably, a plurality of spaced grooves are provided on the insulating outer cylinder, and an electrode ring group is embedded in the ring grooves. The electrode ring group consists of an M electrode ring, an N electrode ring, and an A electrode ring that are spaced from top to bottom. The outer edge of the electrode ring group is flush with the outer wall of the insulating outer cylinder.

[0013] Preferably, both ends of the third cylinder are provided with external threads, the lower end of the third cylinder is threadedly connected to the second adapter sleeve, the upper end of the third cylinder is threadedly connected to the soil sample collector, and the outer wall of the barrel of the third cylinder is tightly wrapped by the inner wall of the second adapter sleeve and the inner wall of the soil sample collector.

[0014] Preferably, the three-axis geophone consists of an X-axis geophone, a Y-axis geophone, and a Z-axis geophone, and the inner wall of the third cylinder is concave with a reserved groove so that the X-axis geophone, Y-axis geophone, Z-axis geophone, and seismic wave data transmitter are embedded and fixed in the reserved groove.

[0015] Preferably, the soil sample collector includes a cluster sampling tube, the upper half of the cluster sampling tube is a central tube, the lower half of the cluster sampling tube is a conical cluster tube, the upper and middle part of the conical cluster tube is cylindrical, the lower part of the conical cluster tube is conical, and the conical surface of the lower end of the conical cluster tube is provided with a plurality of collection holes around its own axis, and the collection holes pass through the upper surface of the conical cluster tube.

[0016] Preferably, a plurality of electromagnet devices are installed on the upper surface of the conical clustering tube, the electromagnet devices are in a circular ring shape and correspond one-to-one to each collection hole, each collection hole is equipped with a sampling rod, the sampling rod includes a sampling rod body, the sampling rod body is arranged throughout the collection hole and the upper part passes through the electromagnet device, the lower end of the sampling rod body is a sampling rod cone head, the sampling rod cone head is in a cone shape and the bottom surface matches the size of the collection hole, the upper end of the sampling rod body is a sampling rod end buckle, the sampling rod end buckle is cylindrical and has a diameter larger than the collection hole.

[0017] Preferably, a protective shell is installed on the cluster sampling tube, the outer diameter of the protective shell is equivalent to that of the conical cluster tube, the upper part of the protective shell is detachably connected to the upper part of the center tube, the lower part of the protective shell is detachably connected to the upper surface of the conical cluster tube, the upper end of the center tube is connected to an end sealing ring, and a cable reserved hole is reserved in the center of the end sealing ring.

[0018] Preferably, the axes of the first cylinder, the second cylinder, the third cylinder and the cluster sampling cylinder are the same, and a probe cable is electrically connected to the static data transmitter, the resistivity data transmitter and the seismic wave data transmitter from bottom to top, and passes through the cable reserved hole.

[0019] The present invention has at least the following beneficial effects:

[0020] First, the static data acquisition function section, resistivity data acquisition function section, seismic wave data acquisition function section, and soil sample collector of the present invention can be quickly assembled or disassembled, are simple and stable, and facilitate replacement and maintenance of internal components.

[0021] Second, the resistivity data acquisition function section and the seismic wave data acquisition function section of the present invention can collect soil resistivity and soil shear wave velocity data while performing in-situ static penetration, simplifying the steps of in-situ penetration of seabed soil layers and improving experimental efficiency.

[0022] Third, the soil sample collector of the present invention can be lowered with the probe to collect soil samples of the in-situ soil layer when needed. Combined with the in-situ soil samples, the structure of the in-situ soil layer can be more accurately analyzed and confirmed, which has a great auxiliary effect on the accuracy of data processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the assembly of the functional sections of a multifunctional high-precision combined in-situ test probe in a technical solution of the present invention;

[0024] Figure 2 This is a cross-sectional view of the tapered contact probe of the multifunctional high-precision combined in-situ test probe after installation in one technical solution of the present invention;

[0025] Figure 3 This is a schematic diagram of the static data acquisition function section of a multifunctional high-precision combined in-situ test probe in a technical solution of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal components of the static data acquisition functional section of a multifunctional high-precision combined in-situ test probe in one technical solution of the present invention;

[0027] Figure 5 This is a schematic diagram of the assembly of a resistivity data acquisition section of a multifunctional high-precision combined in-situ test probe in one technical solution of the present invention;

[0028] Figure 6 This is a schematic diagram of the installation of the resistivity data acquisition section of the multifunctional high-precision combined in-situ test probe in one technical solution of the present invention;

[0029] Figure 7 This is a schematic diagram of the internal components and installation of the shear wave velocity data acquisition section of a multifunctional high-precision combined in-situ test probe in one technical solution of the present invention;

[0030] Figure 8 This is a schematic diagram showing the connection between the soil sample collection function section and the shear wave velocity collection section of a multifunctional high-precision combined in-situ test probe in a technical solution of the present invention;

[0031] Figure 9 This is a schematic diagram of the internal components of the soil sample collection functional section of a multifunctional high-precision combined in-situ testing probe in one technical solution of the present invention;

[0032] Figure 10This is a working schematic diagram of the sampling rod of a multifunctional high-precision combined in-situ test probe in a technical solution of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can implement the invention with reference to the description.

[0034] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0035] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] like Figures 1 to 10 As shown, the present invention provides a multifunctional high-precision combined in-situ test probe, including:

[0037] The static data acquisition functional section 1 includes a first cylinder 11. A conical probe 10 is screwed onto the internal thread of the lower end of the first cylinder 11. The upper and lower ends of the inner cylinder of the first cylinder 11 are respectively installed with an inclination sensor 54 and a water pressure sensor 51. The outer wall of the first cylinder 11 is affixed with a cone pressure sensor 52 and a friction sensor 53. The outer side of the friction sensor 53 is sheathed with a friction cylinder 12. The water pressure sensor 51, cone pressure sensor 52, friction sensor 53, and inclination sensor 54 are electrically connected to a static data transmitter 55.

[0038] The resistivity data acquisition functional section 2 includes a second cylinder 21, one end of which is detachably connected to the static data acquisition functional section 1. The outer wall of the second cylinder 21 is sheathed with an insulating outer cylinder 22, and the outer wall of the insulating outer cylinder 22 is provided with an electrode ring group 56, which is electrically connected to the resistivity data transmitter 560.

[0039] The seismic wave data acquisition functional section 3 includes a third cylinder 31 , one end of which is detachably connected to the resistivity data acquisition functional section 2 . A triaxial geophone 57 is disposed within the third cylinder 31 , and the triaxial geophone 57 is electrically connected to a seismic wave data transmitter 570 .

[0040] The soil sample collector 4 is a cylindrical structure with a conical bottom. The third cylinder 31 can be detachably inserted into the soil sample collector 4. The diameter of the soil sample collector 4 is larger than that of the third cylinder 31. A plurality of collection holes 40 are provided at the bottom of the soil sample collector 31.

[0041] In the above technical solution, all functional sections are threadedly connected to the functional sections connected thereto, and the central axis of each functional section forms a continuous middle cylinder to accommodate various sensors and digital transmitters and pass through the probe cable 50. The static data acquisition functional section 1 is the part that directly contacts the soil layer at its end, and its conical contact probe 10 is affected by the soil penetration resistance and transmits the penetration resistance upward in sequence along the first cylinder 11, the second cylinder 21, the third cylinder 31 and the soil sample collector 4. The first cylinder 11 is axially compressed and causes the cone pressure sensor 52 to deform slightly. After the friction outer cylinder 12 is subjected to the friction force of the soil, the friction sensor 5 3. The compressive strain and friction strain of the first cylinder 11 are received simultaneously, and the sleeve friction data can be subsequently calculated. The conical probe 10 has a porous water channel 101. A through hole is provided on the upper surface of the conical probe 10 to abut against the water pressure sensor 51. The inclination sensor 54 is used to measure the inclination angle of the probe in real time when it is penetrated underground to prevent damage to the probe rod due to excessive inclination. All sensors in the static data acquisition functional section 1 are electrically connected to the static data transmitter 55. The static data transmitter 55 can power each sensor in the static data acquisition functional section 1 and collect the electrical signals of each sensor in real time through wires.

[0042] In the above technical solution, the electrode coil group 56 is composed of multiple single electrode coils arranged at intervals. When the resistivity of the soil layer under the seabed needs to be measured, the resistivity of the soil section is obtained by discharging some single resistance coils and collecting resistance by other single electrode coils. The resistivity data transmitter 560 is responsible for power supply and real-time collection of resistivity data generated by the electrode coils. The insulating outer cylinder 22 separates the electrode coils between the electrode coil groups 56 to prevent short circuits. When seismic wave testing is required at a certain depth, the multifunctional probe is stopped at the specified depth, and then the seismic wave is excited by hitting the seabed with a heavy hammer, etc. The three-axis geophone 57 receives the longitudinal wave and two shear wave components and The data is transmitted to the seismic wave data transmitter 570 in real time through the signal line. The diameter of the soil sample collector 4 is larger than all the cylindrical components below it. The lower surface of the soil sample collector 4 also squeezes the soil while the probe is continuously moved downward under force. The collection hole 40 remains closed under normal working conditions. When it is determined that the soil layer has changed or there is a need for sampling, the collection hole 40 is turned to the open state. The soil sample collector 4 squeezes the soil along the way into the collection hole 40 as it descends. The soil sample 400 in the collection hole 40 can be taken out and used as important data processing for previous static data, resistivity data and seismic wave data and as a basis for important soil layer analysis.

[0043] In this technical solution, during the same static penetration test, the four modules can each perform their own data collection and sample collection functions in situ at a probe point according to actual needs, which greatly simplifies the tedious operation of multiple replacement of functional probes in underwater in-situ penetration tests, shortens the time of in-situ penetration tests, and in addition to collecting statics, soil resistivity, soil shear wave velocity and other functions, it can also collect soil samples in situ, so that the data for subsequent processing is supported by physical in-situ soil samples.

[0044] In another technical solution, threads are provided on both the inner and outer sides of the upper end of the first cylinder 11. The outer threads on the upper end of the first cylinder 11 are screwed with a sealing ring 13 and a first adapter cylinder 60 in sequence. The inner threads on the upper end of the first cylinder 11 are connected to a first fixed cylinder 14. The static data transmitter 55 and the inclination sensor 54 are fixed in the first fixed cylinder 14. The inner wall of the friction cylinder 12 is connected to the first cylinder 11 through the friction sensor 53. The first adapter cylinder 60 is a cylinder component with inner threads on both sides. Its maximum outer diameter is equal to the outer diameter of the friction cylinder 12. The purpose of providing the first adapter cylinder 60 is As a connecting transition section to facilitate the overall disassembly and maintenance of the multi-function probe, the first adapter tube 60's own tube wall thickness and material strength can meet the requirements of the first cylinder 11 transmitting the cone tip resistance to the upper component, and the first adapter tube 60 can accommodate the first fixed tube 14. The first fixed tube 14 is used to ensure that the axis of the inclination sensor 54 always coincides with the axis of the first cylinder 11, thereby ensuring the data accuracy of the inclination sensor 54. The side circumference of the sealing ring 13 is provided with a sealing rubber ring or other sealing measures to ensure the watertightness between the first cylinder 11 and the friction outer cylinder 12 and the first adapter tube 60.

[0045] In another technical solution, a porous water channel 101 is provided in the conical probe 10, and the porous water channel has a side water channel opening 1011 on the side of the conical probe 10. A permeable stone 102 is fixedly sealed in the side water channel opening 1011. The porous water channel 101 has an upper water channel opening 1012 at the center of the top surface of the conical probe. The upper surface of the conical probe 10 is in close contact with the lower surface of the water pressure sensor 51. The water pressure sensor 51 is embedded in the first cylinder 11 by a circular holder 510 and has good water tightness with the circular holder 510. The water around the conical probe 10 enters the porous water channel 101 through the permeable stone 102 and acts on the surface of the water pressure sensor 51. The water pressure sensor 51 converts the pressure signal into an electrical signal and transmits it to the static data transmitter 55 through a signal line.

[0046] In another technical solution, the insulating outer cylinder 22 is provided with a plurality of spaced grooves 23, and an electrode ring group 56 is matched and embedded in the grooves 23. The electrode ring group 56 consists of an M electrode ring 561, an N electrode ring 562, and an A electrode ring 563 spaced from top to bottom. The outer edge of the electrode ring group 56 is flush with the outer wall of the insulating outer cylinder 22. The electrode ring group 56 is electrically connected to a resistivity data transmitter 560. The maximum outer diameter of the insulating outer cylinder 22 is slightly larger than the first adapter cylinder 60, thereby achieving a certain soil squeezing effect during the downward movement, ensuring that the electrode ring group 56 is in full contact with the surrounding soil, and avoiding the inability to accurately collect data due to the evacuation of the surrounding soil. When the resistivity data acquisition functional section 2 is in the soil layer, a certain voltage of direct current is input through the A electrode 563 and the M electrode 562 respectively. The N electrode ring 562 serves as the only receiving electrode to form a measurement circuit with the A electrode 563 and the M electrode 562 respectively, and transmits its power-on signal to the resistivity data transmitter 560.

[0047] In another technical solution, both ends of the third barrel 31 are provided with external threads, one end of the third barrel 31 is threadedly connected to the second adapter sleeve 62, and the other end is threadedly connected to the soil sample collector 4. The outer wall of the barrel of the third barrel 31 is tightly wrapped by the inner wall of the second adapter sleeve 62 and the inner wall of the soil sample collector 4. A plurality of barrel sealing rubber rings 30 are arranged at intervals on the outer side wall of the barrel of the third sleeve 31. When installing the third sleeve 31, the outer thread of its lower end is first matched with the inner thread of the second adapter sleeve 62 and screwed. During the screwing process, the inner wall of the second adapter sleeve 62 gradually squeezes the inner barrel sealing rubber ring 30. Similarly, When the third cylinder 31 is matched with the internal thread at the lower end of the soil sample collector 4 and screwed, the inner wall of the lower end of the soil sample collector 4 is matched with the outer wall of the third cylinder 31 and the upper cylinder body sealing rubber ring 30 is squeezed tightly. The second adapter sleeve 62 and the second cylinder 21 are connected through the third adapter sleeve 61. The forced compression of the cylinder body sealing rubber ring 30 can not only serve as a waterproof measure for the third sleeve 31 to prevent water seepage in the cylinder, but also the cylinder body sealing rubber ring 30 can better make the third cylinder 31 tightly combined with the cylinder component that wraps it on the outside, so that the three-axis detector 57 in the third cylinder 31 is less affected by the gap between the parts assembly, resulting in additional errors in the collected seismic wave data.

[0048] In another technical solution, the three-axis geophone 57 is composed of an X-axis geophone 571, a Y-axis geophone 573, and a Z-axis geophone 572. The inner wall of the third cylinder 3 is recessed with a reserved groove so that the X-axis geophone 571, the Y-axis geophone 573, the Z-axis geophone 572 and the seismic wave data transmitter 570 are each embedded and fixed in the reserved groove. In this technical solution, in order to shorten the length of the multi-function probe, after the third cylinder 3 and the second adapter sleeve 62 are tightly screwed, there is a certain gap between the two to accommodate the resistivity data transmitter 560. The X-axis geophone 571, the Y-axis geophone 573, and the Z-axis geophone 572 respectively receive the shear waves and longitudinal waves of the artificial earthquake created on the seabed and transmit the data to the seismic wave data transmitter 570 through the signal line.

[0049] In another technical solution, the soil sample collector 4 includes a cluster sampling tube 41, the upper half of the cluster sampling tube 41 is a central tube 410, the lower half of the cluster sampling tube 41 is a conical cluster tube 411, the upper and middle part of the conical cluster tube 411 is cylindrical, the lower part of the conical cluster tube 411 is conical, and the conical surface of the lower end of the conical cluster tube 411 is provided with a plurality of collection holes 40 around its own axis, the collection holes 40 pass through the upper surface of the conical cluster tube 411, and the cluster sampling tube 41 as a whole is microphone-shaped. The lower section of the cluster sampling tube 41 is concave and has an internal thread to match the shape of the third cylinder 3. 4-6 collection holes 40 are arranged in a circle around the lower conical surface of the conical cluster tube 411. The orifices of the collection holes 40 have opening and closing measures, so that the collection holes 40 do not enter the soil during the downward movement of the soil sample collector 4. When sampling is required, the two opposite collection holes 40 are opened at the same time. The squeezed soil is cut by the edge formed by the collection holes 40 and the bottom edge of the conical cluster tube 411, and is squeezed into the collection holes 40 in strips to become strip samples 400.

[0050] In another technical solution, a plurality of electromagnet devices 43 are installed on the upper surface of the conical clustering tube 411. The electromagnet devices 43 are annular and correspond to each collection hole 40 one by one. There is a sampling rod 42 in each collection hole 40. The sampling rod includes a sampling rod shaft 421. The sampling rod shaft 421 is arranged throughout the collection hole 40 and passes through the electromagnet device 43 at the upper part. The lower end of the sampling rod shaft 421 is a sampling rod cone head 423. The sampling rod cone head 423 is in the shape of a cone and the bottom surface matches the size of the collection hole 40. The upper end of the sampling rod shaft 421 is a sampling rod end. Buckle 422, the sampling rod end buckle 422 is cylindrical and has a diameter larger than the collection hole 40. The sampling rod end buckle 422 and the sampling rod cone head 423 are both made of magnetic alloy. When the sampling operation is not performed, all electromagnet devices 43 are energized and adsorb the sampling rod end buckle 422. At this time, the sampling rod cone head 423 completely blocks the front end of the collection hole 40 and plays a certain role in loosening and squeezing the soil. When the sampling operation is performed, the power supply of any electromagnet device 43 is canceled, so that the sampling rod 42 is recovered along with the soil sample entering the collection hole 40 under the total use of squeezing soil at the front end until the sampling rod cone head 423 touches the bottom.

[0051] In another technical solution, a protective shell 44 is installed on the cluster sampling tube 41. The outer diameter of the protective shell 44 is equivalent to that of the conical cluster tube 411. The upper part of the protective shell 44 is detachably connected to the upper part of the center tube 410, and the lower part of the protective shell 44 is detachably connected to the upper surface of the conical cluster tube 411. The upper end of the center tube 410 is connected to an end sealing ring 413, and a cable reserved hole 4130 is reserved in the center. The connection between the protective shell 44 and other components is not sealed. When underwater, the protective shell 44 is filled with water to avoid damage under pressure. The function of the protective shell 44 is to prevent the sampling rod end buckle 422 from being affected by sediment when the probe is pulled up after the sampling work is completed, so that the sampling rod 42 is displaced in the collection hole 40 to push out the strip sample 400.

[0052] In another technical solution, the axes of the first cylinder 11, the second cylinder 21, the third cylinder 31, and the cluster sampling cylinder 41 are the same, and a probe cable 50 is electrically connected to the static data transmitter 55, the resistivity data transmitter 560, and the seismic wave data transmitter 570 from bottom to top, and passes through the cable reserved hole 4130. The probe cable 50 is enclosed with electrical wires and signal lines for power supply and data transmission.

[0053] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Multifunctional high-precision combined in-situ test probe, characterized by: Including detachable connections from bottom to top: The static data acquisition functional section includes a first cylinder, a conical contact probe is screwed into the internal thread of the lower end of the first cylinder, an inclination sensor and a water pressure sensor are respectively installed at the upper and lower ends of the inner cylinder of the first cylinder, a cone pressure sensor and a friction sensor are attached to the outer wall of the first cylinder, and a friction cylinder is sleeved on the outer side of the friction sensor. The water pressure sensor, cone pressure sensor, friction sensor, and inclination sensor are electrically connected to the static data transmitter; The resistivity data acquisition functional section includes a second cylinder, one end of which is detachably connected to the static data acquisition functional section, an insulating outer cylinder being sheathed on the outer wall of the second cylinder, an electrode ring group being electrically connected to the resistivity data transmitter; The seismic wave data acquisition functional section includes a third cylinder, one end of which is detachably connected to the resistivity data acquisition functional section, and a triaxial geophone is disposed in the third cylinder, the triaxial geophone being electrically connected to the seismic wave data transmitter; A soil sample collector having a cylindrical structure with a conical bottom, wherein the third cylinder is detachably inserted into the soil sample collector, the diameter of the soil sample collector is larger than that of the third cylinder, and a plurality of collection holes are provided at the bottom of the soil sample collector; The upper end of the first cylinder is provided with threads on both the inner and outer sides. The outer threads on the upper end of the first cylinder are screwed with a sealing ring and a first adapter cylinder in sequence. The inner threads on the upper end of the first cylinder are connected to a first fixed cylinder. The static data transmitter and the inclination sensor are fixed in the first fixed cylinder. The inner wall of the friction cylinder is connected to the first cylinder via the friction sensor. The soil sample collector includes a cluster sampling tube, the upper half of the cluster sampling tube is a central tube, the lower half of the cluster sampling tube is a conical cluster tube, the upper and middle part of the conical cluster tube is cylindrical, the lower part of the conical cluster tube is conical, the conical surface of the lower end of the conical cluster tube is provided with a plurality of collection holes around its own axis, the collection holes pass through the upper surface of the conical cluster tube, a plurality of electromagnet devices are installed on the upper surface of the conical cluster tube, the electromagnet devices are annular and correspond to each collection hole one by one, and there is a sampling rod in each collection hole, the sampling rod includes a sampling rod rod body, the sampling rod rod body is arranged in the collection hole through the length and the upper part passes through the electromagnet device, the lower end of the sampling rod rod body is a sampling rod cone head, the sampling rod cone head is cone-shaped and the bottom surface matches the size of the collection hole, the upper end of the sampling rod rod body is a sampling rod end buckle, the sampling rod end buckle is cylindrical and has a diameter larger than the collection hole.

2. The multifunctional high-precision combined in-situ test probe according to claim 1, characterized in that: A pore water channel is provided in the conical probe, and the pore water channel has a side water channel opening on the side of the conical probe. The side water channel opening is fixedly blocked with a permeable stone. The pore water channel has an upper water channel opening at the center of the top surface of the conical probe, and the upper surface of the conical probe is in close contact with the lower surface of the water pressure sensor.

3. The multifunctional high-precision combined in-situ test probe according to claim 1, characterized in that: The insulating outer cylinder is provided with a plurality of ring grooves arranged at intervals, and an electrode ring group is matched and embedded in the ring grooves. The electrode ring group consists of an M electrode ring, an N electrode ring, and an A electrode ring arranged at intervals from top to bottom. The outer edge of the electrode ring group is flush with the outer wall of the insulating outer cylinder.

4. The multifunctional high-precision combined in-situ test probe according to claim 1, characterized in that: Both ends of the third cylinder are provided with external threads, the lower end of the third cylinder is threadedly connected to the second adapter sleeve, the upper end of the third cylinder is threadedly connected to the soil sample collector, and the outer wall of the cylinder body of the third cylinder is tightly wrapped by the inner wall of the second adapter sleeve and the inner wall of the soil sample collector.

5. The multifunctional high-precision combined in-situ test probe according to claim 4, characterized in that: The three-axis geophone consists of an X-axis geophone, a Y-axis geophone, and a Z-axis geophone. The inner wall of the third cylinder is concave with a reserved groove so that the X-axis geophone, Y-axis geophone, Z-axis geophone, and seismic wave data transmitter are fixed in the reserved groove.

6. The multifunctional high-precision combined in-situ test probe according to claim 1, characterized in that: A protective shell is installed on the cluster sampling tube, the outer diameter of the protective shell is equal to the outer diameter of the conical cluster tube, the upper part of the protective shell is detachably connected to the upper part of the center tube, and the lower part of the protective shell is detachably connected to the upper surface of the conical cluster tube. The upper end of the center tube is connected to an end sealing ring, and a cable reserved hole is reserved in the center of the end sealing ring.

7. The multifunctional high-precision combined in-situ test probe according to claim 6, characterized in that: The axes of the first cylinder, the second cylinder, the third cylinder and the cluster sampling cylinder are the same, and probe cables are electrically connected to the static data transmitter, the resistivity data transmitter and the seismic wave data transmitter from bottom to top, and pass through the cable reserved hole.

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