Shallow sea seabed environment effect in-situ detection device and detection method

Abstract

The invention relates to a shallow sea seabed environment effect in-situ detection device and a detection method. The detection device comprises a closed reaction kettle, a geochemical detection system, a data storage and transmission response system, a middle support plate, a detection probe rod and a plurality of support probe rods, the closed reaction kettle is arranged at the top of the middle supporting plate; the detection feeler lever and the supporting feeler lever are both vertically connected to the bottom of the middle supporting plate; the geochemical detection system is used for detecting the gas change of the near-seabed water body in the closed reaction kettle, the gas change in the stratum and the stratum characteristic change; and the data storage and transmission response system is used for storing and transmitting detection data of the geochemical detection system. The shallow sea seabed environment effect in-situ detection device provided by the invention can be arranged in a seabed insertion manner, performs in-situ detection on a near-seabed water body and a seabed shallow stratum by utilizing a geochemical detection method, and can provide early warning technical support for abnormal change of the seabed environment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean engineering and environmental geological detection, and more specifically, to an in-situ detection device and method for shallow sea seabed environmental effects. Background Art

[0002] In the current production of shallow sea oil and gas and the process of ocean engineering construction operations, more attention is paid to aspects such as site stability and geological safety of engineering operations. There is relatively little in-situ detection of environmental effects such as leakage of shallow gases (methane, sulfur dioxide, carbon dioxide), oil and gas leakage, and water pollution caused by offshore construction or oil and gas production, which is not conducive to timely evaluation of seabed and water body environmental effects caused by offshore construction and oil and gas production operations. Especially in shallow sea engineering processes such as oil and gas site construction and oil and gas production operations, when there are environmental effect changes such as shallow gas leakage, pore water pressure change, and permeability change in the shallow strata, real-time detection of abnormal methane (CH4), hydrogen sulfide (H2S), carbon dioxide (CO2) in the near-seabed water body of the site and changes in pore water pressure and permeability of the strata can effectively evaluate the safety and environmental protection of oil and gas sites, especially the environmental effects during the construction process and oil and gas production process, early warning of environmental risks, and support the safe, stable, green and environmental protection of oil and gas production and engineering operations. However, in existing shallow sea engineering, it mainly focuses on the detection of ocean water body movement or the detection of indoor water body composition, and mainly conducts water body observations using surface buoys, satellites, etc. The water body elements mainly include waves, tides, and currents. At the same time, after water body collection, the composition of the water body is detected in the laboratory, and it is difficult to achieve the technical effect of in-situ detection of the near-seabed water body and shallow strata. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an in-situ detection device and method for shallow sea seabed environmental effects, aiming to solve the problems existing in the prior art.

[0004] According to the first aspect of the present invention, an in-situ detection device for shallow sea seabed environmental effects is provided, which includes a sealed reaction kettle, a geochemical detection system, a data storage and transmission response system, a middle support plate, a detection probe rod, and a plurality of support probe rods; wherein, The sealed reaction kettle is arranged on the top of the middle support plate, and the sealed reaction kettle is used for collecting near-seabed water body and injecting the water body into the hollow cavity inside it; The detection probe rod and the plurality of support probe rods are both vertically connected to the bottom of the middle support plate. The detection probe rod is located at the center position of the middle support plate, and the plurality of support probe rods are located at the edge position of the support plate. The detection probe rod and the support probe rods are both used for inserting into the seabed strata; The geochemical detection system includes a geochemical detection probe, a formation detection sensor assembly, and a geochemical detection control terminal; the geochemical detection probe and the formation detection sensor assembly are both electrically connected to the geochemical detection control terminal; the geochemical detection probe is disposed in the sealed reaction kettle and is used for detecting the gas change in the near-seabed water body in the sealed reaction kettle; the formation detection sensor assembly is disposed on the detection rod and is used for detecting the gas change and the formation property change in the formation. The data storage and transmission response system is electrically connected to the geochemical detection system and is used for storing and transmitting the detection data of the geochemical detection system.

[0005] Preferably, a water body injection system is provided on the sealed reaction kettle, and the water body injection system is electrically connected to the data storage and transmission response system. The water body injection system includes a water body injection control terminal and a water body collector, and the water body collector is electrically connected to the water body injection control terminal.

[0006] Preferably, water flow nozzles are provided at the bottom ends of the support rod and the detection rod, and a water flow conduit communicating with the water flow nozzles is provided on the sealed reaction kettle. The water flow conduit is used for conveying the water body in the sealed reaction kettle to the water flow nozzles.

[0007] Preferably, the outside of the sealed reaction kettle is coated with a glass microsphere floating body frame.

[0008] Preferably, the formation detection sensor assembly includes a first formation detection sensor element and a second formation detection sensor element. The first formation detection sensor element is disposed on the outer wall of the detection rod and is used for detecting the gas change in the formation. The second formation detection sensor element is disposed at the bottom end of the detection rod and is used for detecting the formation property change.

[0009] Preferably, the outside of the detection rod is coated with a metal mesh sleeve, and the metal mesh sleeve is used for protecting the formation detection sensor assembly.

[0010] Preferably, the detection rod includes a plurality of detection rod units connected together, and adjacent two detection rod units are connected by a connection component.

[0011] Preferably, a battery compartment is provided on the sealed reaction kettle, a battery is provided in the battery compartment, and the geochemical detection system and the data storage and transmission response system are both electrically connected to the battery.

[0012] Preferably, the closed reactor, the middle support plate, the detection probe rod and the support probe rod are all made of stainless steel materials.

[0013] According to a second aspect of the present invention, there is provided an in-situ detection method for shallow sea seabed environmental effects, which is implemented by using the in-situ detection device for shallow sea seabed environmental effects as described above. The detection method includes: Lower the in-situ detection device for shallow sea seabed environmental effects to the seabed, and insert the support probe rod and the detection probe rod of the in-situ detection device for shallow sea seabed environmental effects into the shallow seabed formation; The closed reactor collects the near-seabed water body into the hollow cavity inside it; The geochemical detection system detects the near-seabed water body in the closed reactor and the formation into which the detection probe rod is inserted; The data storage and transmission response system stores the detection data of the geochemical detection system and transmits the detection data to the data receiving response terminal; After the detection is completed, lift the support probe rod and the detection probe rod of the in-situ detection device for shallow sea seabed environmental effects out of the shallow seabed formation to complete the recovery of the in-situ detection device for shallow sea seabed environmental effects.

[0014] The in-situ detection device and detection method for shallow sea seabed environmental effects provided by the present invention can be deployed in a subsea insertion manner, and use the geochemical detection method to perform in-situ detection on the near-seabed water body and the shallow seabed formation, which can provide early warning technical support for abnormal changes in seabed environmental effects. Description of the Drawings

[0015] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become clearer.

[0016] Figure 1 Shows a schematic structural diagram of an in-situ detection device for shallow sea seabed environmental effects according to an embodiment of the present invention.

[0017] Figure 2 Shows a schematic layout diagram of the detection probe rod and the support probe rod on the middle support plate in the in-situ detection device for shallow sea seabed environmental effects according to an embodiment of the present invention.

[0018] Figure 3 Shows a top view structural diagram of the closed reactor in the in-situ detection device for shallow sea seabed environmental effects according to an embodiment of the present invention.

[0019] Figure 4 Shows a top view structural diagram of the detection probe rod in the in-situ detection device for shallow sea seabed environmental effects according to an embodiment of the present invention.

[0020] In the figure: 1, airtight reaction kettle; 2, geochemical detection response and data storage terminal; 3, geochemical detection control terminal; 4, geochemical detection probe; 5, water injection response and data storage terminal; 6, water injection control terminal; 7, water injection port; 8, battery compartment; 9, tilt sensor; 10, middle support plate; 11, connecting sleeve; 12, water flow conduit; 13, support probe rod; 14, water flow nozzle; 15, detection probe rod; 16, connecting component; 17, first formation detection sensor element; 18, second formation detection sensor element; 19, metal mesh; 20, fixed pipe; 21, sealing plate. Detailed implementation mode

[0021] The various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. In each of the drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale.

[0022] The present invention provides an in-situ detection device for shallow sea seabed environmental effects. Refer to Figure 1 , the in-situ detection device for shallow sea seabed environmental effects includes an airtight reaction kettle 1, a geochemical detection system, a data storage and transmission response system, a middle support plate 10, a detection probe rod 15, and a plurality of support probe rods 13; wherein, the airtight reaction kettle 1 is arranged on the top of the middle support plate 10, and the airtight reaction kettle 1 is used for collecting near-seabed water and injecting the water into the hollow cavity inside it; the detection probe rod 15 and the plurality of support probe rods 13 are both vertically connected to the bottom of the middle support plate 10, the detection probe rod 15 is located at the center position of the middle support plate 10, and the plurality of support probe rods 13 are located at the edge position of the support plate. The detection probe rod 15 and the support probe rods 13 are both used for inserting into the seabed formation; the geochemical detection system includes a geochemical detection probe 4, a formation detection sensor assembly, and a geochemical detection control terminal 3; the geochemical detection probe 4 and the formation detection sensor assembly are both electrically connected to the geochemical detection control terminal 3; the geochemical detection probe 4 is arranged in the airtight reaction kettle 1 and is used for detecting the gas change of the near-seabed water in the airtight reaction kettle 1; the formation detection sensor assembly is arranged on the detection probe rod 15 and is used for detecting the gas change and the formation characteristic change in the formation; the data storage and transmission response system is electrically connected to the geochemical detection system and is used for storing and transmitting the detection data of the geochemical detection system.

[0023] Specifically, the middle support plate 10 is a circular plate-like structure. The airtight reaction kettle 1, the detection probe rod 15, and the support probe rod 13 are all connected to the middle support plate 10, which is the main support component of the whole device and provides structural support for the airtight reaction kettle 1. In this embodiment, a connecting sleeve 11 is arranged at the center of the top of the middle support plate 10, and the airtight reaction kettle 1 is connected to the top of the connecting sleeve 11. The airtight reaction kettle 1 has a cylindrical structure, and its interior is provided with a hollow cavity for accommodating water. The collected water enters the hollow cavity inside the airtight reaction kettle 1 for the geochemical detection probe 4 to detect. Both the detection probe rod 15 and the support probe rod 13 are slender round tube structures, and the bottom ends of the detection probe rod 15 and the support probe rod 13 are wedge-shaped, which facilitates easy insertion into the seabed formation. In this embodiment, the number of the support probe rods 13 is three, and the three support probe rods 13 are evenly distributed along the circumferential direction of the middle support plate 10, as Figure 2 shown, and the three support probe rods 13 are distributed at an angle of 120° to each other on the horizontal plane. In this embodiment, the airtight reaction kettle 1, the middle support plate 10, the detection probe rod 15, and the support probe rod 13 are all made of 316L stainless steel material to improve the corrosion resistance of the device, adapt to use in the marine environment, and at the same time make the detection device have higher structural strength.

[0024] In this embodiment, the geochemical detection probe 4 includes three gas geochemical detection probes 4 for methane (CH4), hydrogen sulfide (H2S), and carbon dioxide (CO2), and can detect the gas components of the near-seabed water collected in the airtight reaction kettle 1. Specifically, when implemented, the type of the geochemical detection probe 4 can be pre-installed into the cavity of the airtight reaction kettle 1 according to the types of gas parameters to be detected.

[0025] In this embodiment, the formation detection sensor assembly includes a first formation detection sensor element 17 and a second formation detection sensor element 18; the first formation detection sensor element 17 is arranged on the outer wall of the detection probe rod 15 for detecting gas changes in the formation; the second formation detection sensor element 18 is arranged at the bottom end of the detection probe rod 15 for detecting formation characteristic changes. Specifically, the first formation detection sensor element 17 is a gas detection sensor for detecting methane (CH4), hydrogen sulfide (H2S), and carbon dioxide (CO2) in the formation, and the second formation detection sensor element 18 is a detection sensor for detecting formation permeability and pore water pressure. In this embodiment, the outer part of the detection probe rod 15 is covered with a metal mesh 19, and the metal mesh 19 is used to protect the formation detection sensor assembly. The metal mesh 19 can allow the water body in the formation to penetrate while blocking the sediments in the formation from entering, and prevent damage to the formation detection sensor assembly during the process of inserting or removing the detection probe rod 15 from the formation.

[0026] A water injection system is provided on the closed reactor 1, and the water injection system is electrically connected to the data storage and transmission response system; the water injection system includes a water injection control terminal 6 and a water sampler, and the water sampler is electrically connected to the water injection control terminal 6. In this embodiment, the water sampler includes a water injection port 7 provided on the side wall of the closed reactor 1. An electromagnetic valve can be provided at the water injection port 7 for opening and closing the water injection port 7, and the water injection control terminal 6 is electrically connected to the electromagnetic valve to control the opening and closing of the electromagnetic valve.

[0027] In this embodiment, the data storage and transmission response system includes a geochemical detection response and data storage terminal 2 and a water injection response and data storage terminal 5. The geochemical detection control terminal is electrically connected to the geochemical detection response and data storage terminal 2, and the water injection control terminal 6 is electrically connected to the water injection response and data storage terminal 5. The data storage and transmission response system can issue a water sampling instruction to the closed reactor 1, a water detection instruction to the geochemical detection probe 4, and a formation detection instruction to the formation detection sensor assembly on the detection rod 15 respectively; at the same time, it can store the water detection data and formation detection data of the geochemical detection system, and can immediately transmit the data to the data receiving response terminal on the drilling ship, platform or other oil and gas production facilities, and can communicate with the drilling ship, platform or other oil and gas production facilities.

[0028] A battery compartment 8 is provided on the closed reactor 1, and a battery is provided in the battery compartment 8. The water injection system, the geochemical detection system and the data storage and transmission response system are all electrically connected to the battery. In this embodiment, the battery compartment 8 is provided at the top of the closed reactor 1, and the battery is a rechargeable battery. The battery is detachably connected to the battery compartment 8, and the battery can be charged or replaced and assembled according to the working duration and detection power to supply power for the operation of the entire detection device.

[0029] An inclination sensor 9 is further provided on the closed reactor 1. The inclination sensor 9 is used to detect the inclination of the detection device during deployment to ensure that the detection device can be deployed close to perpendicular to the seabed formation. In this embodiment, there are two inclination sensors 9, and both of the two inclination sensors 9 are provided on the top of the battery compartment 8.

[0030] The outside of the closed reactor 1 is further coated with a glass microsphere floating body frame. The glass microsphere floating body frame is made of glass microsphere buoyancy material and can provide a certain buoyancy for the detection device to facilitate the lifting out of the detection device. Specifically, during implementation, by controlling the volume of water injected into the closed reactor 1, the balance between the overall gravity of the detection device and the buoyancy of the glass microsphere floating body frame is adjusted to realize the easy insertion and lifting out of the detection device from the soil body.

[0031] In this detection device, water flow nozzles 14 are provided at the bottom ends of the support probe rod 13 and the detection probe rod 15. A water flow conduit 12 communicating with the water flow nozzle 14 is provided on the sealed reaction kettle 1, and the water flow conduit 12 is used to convey the water body in the sealed reaction kettle 1 to the water flow nozzle 14. After the detection work of the detection device is completed, the detected water body is ejected from the water flow nozzle 14, thereby destroying the soil around the detection probe rod 15 and the support probe rod 13 and reducing the adsorption force of the soil on the probe rod, so as to facilitate lifting the detection device out of the formation. Specifically, a booster pump or a high-pressure gas cylinder can be provided on the sealed reaction kettle 1, and by controlling the booster pump or the high-pressure gas cylinder to increase the pressure in the hollow cavity inside the sealed reaction kettle 1, the water body in the sealed reaction kettle 1 is conveyed to the water flow nozzle 14 and ejected. A check valve with a single-sided opening form is provided at the water flow nozzle 14, which can only be opened by the impact of the water flow channel inside the probe rod, preventing the external soil from blocking the water flow nozzle 14 during the process of inserting into the formation. In this embodiment, the top end of the support probe rod 13 is connected with a fixed pipe 20, the support probe rod 13 is connected to the middle support plate 10 through the fixed pipe 20, a sealing plate 21 is provided at the top end of the fixed pipe 20, a water flow channel communicating the water flow nozzle 14 and the inside of the fixed pipe 20 is provided inside the support probe rod 13, the water flow conduit 12 is communicated with the inside of the fixed pipe 20, and the water body in the sealed reaction kettle 1 is pressurized and enters the inside of the fixed pipe 20 through the water flow conduit 12, and is then conveyed to the water flow nozzle 14 and ejected through the connection channel between the fixed pipe 20 and the water flow nozzle 14.

[0032] In this embodiment, the detection probe rod 15 includes a plurality of detection probe rod units connected together, and adjacent two detection probe rod units are connected through a connection component 16. By increasing or decreasing the number of the detection probe rod units, the overall length of the detection probe rod 15 can be adjusted to realize the detection of different formation depths and improve the applicability of the detection device. Specifically, external threads are provided at the ends of the detection probe rod units, and internal threads matching the external threads are provided at both ends of the connection component 16, and the connection component 16 is threadedly connected with the adjacent two detection probe rod units to achieve connection and fixation. The connection component 16 can also be in other structural forms as long as it can achieve the connection and fixation between adjacent two detection probe rod units.

[0033] See Figure 3 and Figure 4 , in this embodiment, on the sealed reaction kettle 1, two each of the geochemical detection response and data storage end 2, the geochemical detection control end 3, the geochemical detection probe 4, the water body injection response and data storage end 5, the water body injection control end 6, and the water body injection port 7 are provided. On the detection probe rod 15, four formation detection sensor assemblies are distributed in a circumferential array, realizing at least "one for use and one for backup" of the key detection components, and improving the detection reliability and stability of the detection device.

[0034] The present invention also provides an in-situ detection method for shallow sea seabed environmental effects, which is implemented by using the in-situ detection device for shallow sea seabed environmental effects as described above. The detection method includes the following steps: S1. Lower the in-situ detection device for shallow sea seabed environmental effects to the seabed, and insert the support probe rod and the detection probe rod of the in-situ detection device for shallow sea seabed environmental effects into the shallow seabed formation.

[0035] Specifically, before lowering the in-situ detection device for shallow sea seabed environmental effects, connect all parts of the detection device to form a complete and workable detection device.

[0036] By means of manual, hoisting or ROV assistance, etc., insert the detection device into the shallow seabed formation in a near-seabed insertion manner to achieve precise placement of the detection device on the seabed.

[0037] S2. The sealed reaction kettle collects near-seabed water into the hollow cavity inside it.

[0038] Specifically, the water injection system on the sealed reaction kettle works to inject water into the hollow cavity inside the sealed reaction kettle.

[0039] S3. The geochemical detection system detects the near-seabed water in the sealed reaction kettle and the formation where the detection probe rod is inserted.

[0040] Specifically, the geochemical detection control terminal controls the geochemical detection probe to detect the content of methane (CH4), hydrogen sulfide (H2S), and carbon dioxide (CO2) gases in the collected near-seabed water, and controls the formation detection sensor assembly to detect the content parameters of methane (CH4), hydrogen sulfide (H2S), and carbon dioxide (CO2) gases in the formation and parameters such as pore water pressure and permeability change.

[0041] S4. The data storage and transmission response system stores the detection data of the geochemical detection system and transmits the detection data to the data receiving response terminal.

[0042] Specifically, after the detection is completed, the water detection data and formation detection data of the geochemical detection system are immediately stored in the geochemical detection response and data storage terminal, and can be immediately transmitted to a drilling ship, platform or other oil and gas production facilities for environmental effect analysis and evaluation.

[0043] S5. After the detection is completed, lift the support probe rod and the detection probe rod of the in-situ detection device for shallow sea seabed environmental effects out of the shallow seabed formation to complete the recovery of the in-situ detection device for shallow sea seabed environmental effects.

[0044] Specifically, the water injection response and the data storage end control the water pressure in the closed reaction kettle. The pressurized water is ejected from the water spray nozzles at the bottom of the detection probe and the support probe through the water flow conduit. The ejected water flow destroys the soil around the probe, reducing the adsorption force of the soil on the probe. Thus, under the action of manual, hoisting or ROV assistance, etc., the detection device can be more conveniently lifted out of the soil, completing the recovery of the detection device.

[0045] According to the characteristics of the water body environmental effect and the formation environmental effect continuously detected on the seabed, the water body collection frequency, the water body / formation detection frequency, the detection content and period of the sensor can be adjusted, providing sufficient and effective detection data support for offshore oil and gas operations or environmental assessment.

[0046] In summary, the in-situ detection device and detection method for the shallow sea seabed environmental effect provided by the present invention can be deployed by means of seabed insertion, and the in-situ detection of the near-seabed water body and the shallow seabed formation can be carried out by using the geochemical detection method, providing early warning technical support for abnormal changes in the seabed environmental effect.

[0047] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0048] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An in-situ detection device for shallow sea seabed environmental effects, characterized in that, It includes a sealed reaction kettle, a geochemical detection system, a data storage and transmission response system, a middle support plate, a detection probe rod and a plurality of support probe rods; among them, The sealed reaction kettle is arranged on the top of the middle support plate, and the sealed reaction kettle is used to collect near-seabed water and inject the water into the hollow cavity inside it; The detection probe rod and the plurality of support probe rods are both vertically connected to the bottom of the middle support plate. The detection probe rod is located at the center position of the middle support plate, and the plurality of support probe rods are located at the edge position of the support plate. The detection probe rod and the support probe rods are both used to insert into the seabed formation; The geochemical detection system includes a geochemical detection probe, a formation detection sensor assembly and a geochemical detection control terminal; the geochemical detection probe and the formation detection sensor assembly are both electrically connected to the geochemical detection control terminal; the geochemical detection probe is arranged in the sealed reaction kettle and is used to detect the gas change of the near-seabed water in the sealed reaction kettle; the formation detection sensor assembly is arranged on the detection probe rod and is used to detect the gas change and the formation characteristic change in the formation; The data storage and transmission response system is electrically connected to the geochemical detection system and is used to store and transmit the detection data of the geochemical detection system.

2. The in-situ detection device for shallow sea seabed environmental effects according to claim 1, wherein, A water injection system is arranged on the sealed reaction kettle, and the water injection system is electrically connected to the data storage and transmission response system; The water injection system includes a water injection control terminal and a water collector, and the water collector is electrically connected to the water injection control terminal.

3. The in-situ detection device for shallow sea seabed environmental effects according to claim 2, wherein, Water flow nozzles are arranged at the bottom ends of the support probe rods and the detection probe rod, and a water flow conduit communicating with the water flow nozzles is arranged on the sealed reaction kettle. The water flow conduit is used to transport the water in the sealed reaction kettle to the water flow nozzles.

4. The in-situ detection device for shallow sea seabed environmental effects according to claim 3, characterized in that The outside of the sealed reaction kettle is covered with a glass microsphere floating body frame.

5. The in-situ detection device for shallow sea seabed environmental effects according to claim 1, wherein The formation detection sensor assembly includes a first formation detection sensor element and a second formation detection sensor element; The first formation detection sensor element is arranged on the outer wall of the detection probe rod and is used to detect the gas change in the formation; The second formation detection sensor element is arranged at the bottom end of the detection probe rod and is used to detect the formation characteristic change.

6. The in-situ detection device for shallow sea seabed environmental effects according to claim 5, characterized in that, The outside of the detection probe rod is covered with a metal mesh sleeve, and the metal mesh sleeve is used to protect the formation detection sensor assembly.

7. The in-situ detection device for shallow sea seabed environmental effects according to claim 1, wherein, The detection probe rod includes a plurality of detection probe rod units connected together, and adjacent two detection probe rod units are connected by a connection component.

8. The in-situ detection device for shallow sea seabed environmental effects according to claim 1, characterized in that A battery compartment is arranged on the sealed reaction kettle, a battery is arranged in the battery compartment, and the geochemical detection system and the data storage and transmission response system are both electrically connected to the battery.

9. The in-situ detection device for shallow sea seabed environmental effects according to claim 1, characterized in that The sealed reaction kettle, the middle support plate, the detection probe rod and the support probe rods are all made of stainless steel materials.

10. An in-situ detection method for shallow sea seabed environmental effects, characterized in that, Implementing with the in-situ detection device for shallow sea seabed environmental effects described in any one of claims 1-9, including: Lower the in-situ detection device for shallow sea seabed environmental effects to the seabed, and insert the support probe rod and the detection probe rod of the in-situ detection device for shallow sea seabed environmental effects into the shallow seabed formation; The airtight reaction kettle collects the near-seabed water body into the hollow cavity inside it; The geochemical detection system detects the near-seabed water body in the airtight reaction kettle and the formation where the detection probe rod is inserted; The data storage and transmission response system stores the detection data of the geochemical detection system and transmits the detection data to the data receiving response terminal; After the detection is completed, lift the support probe rod and the detection probe rod of the in-situ detection device for shallow sea seabed environmental effects out of the shallow seabed formation to complete the recovery of the in-situ detection device for shallow sea seabed environmental effects.

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