CN102879829A - Large-polar-distance submarine electric field meter for shallow sea - Google Patents
Large-polar-distance submarine electric field meter for shallow sea Download PDFInfo
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- CN102879829A CN102879829A CN2012103615386A CN201210361538A CN102879829A CN 102879829 A CN102879829 A CN 102879829A CN 2012103615386 A CN2012103615386 A CN 2012103615386A CN 201210361538 A CN201210361538 A CN 201210361538A CN 102879829 A CN102879829 A CN 102879829A
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Abstract
The invention discloses a large-polar-distance submarine electric field meter for shallow sea. The large-polar-distance submarine electric field meter comprises an unhooking mechanism, an instrument cabin, a base, two measurement electrodes, a releaser and a balance weight mechanism, wherein a data acquirer and a power supply device are arranged in the instrument cabin; the two measurement electrodes are respectively fixed on the instrument cabin and the balance weight mechanism and are connected to the data acquirer through underwater cables; and the measurement electrodes have measurement polar distances of 500 meters. By the technical scheme, under the same noise level, due to the adoption of the large polar distance, an effective signal can be enhanced by dozens of times; the detection sensitivity is improved; and the large-polar-distance submarine electric field meter can be used for submarine electric field observation for the shallow sea (the water depth is less than 200 meters).
Description
Technical field
The invention belongs to the geophysical survey field, specifically belong to the marine surveys field, it relates to a kind of shallow sea with large pole span submarine electric field instrument.
Background technology
The ocean EM exploration technology is one of the important means in research seabed, and by gathering the seabed electric field signal, the regularity of distribution of seabed rock frame is inferred in inverting, has become one of main method of geologic prospecting.The measurement of seabed electric field signal adopts the electrode pair that keeps at a certain distance away to carry out usually, and electrode is connected in the Acquisition Circuit by gage beam.Seabed electric field measurement equipment need to be rendered to the specified point position with ship, because the restriction of deck on the ship area and lifting appliance span, large spread of electrodes can't be realized.At present, domestic and international several typical seabeds electric field measurement device, such as the seabed electromagnetic-field detector of China University of Geosciences's development, the seabed electromagnetism receiving trap of U.S. Scripps institute of oceanography development and the seabed electromagnetic field instrument of Japan's development, the spread of electrodes that uses is 10m, than by land cloth utmost point length little an order of magnitude.Theoretical and experiment shows that all the seabed natural electric field is a kind of faint, wideband random signal, is subject to easily noise jamming, signal pickup assembly is required very harsh.Particularly in the shallow sea or coastal region, the noise that various artificial sources produce is serious, and short pole span can't obtain useful signal.The receiving sensitivity that how to improve shallow sea electric field measurement device is a difficult problem always.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide a kind of volume little and light, can expand and measure pole span, the shallow sea that is fit to the neritic area one-point measurement is with large pole span submarine electric field instrument.
For achieving the above object, provide a kind of shallow sea with large pole span submarine electric field instrument, it comprises uncoupling rigging, instrument room, base, underwater cable, two potential electrode, release and balance weight mechanisms; Wherein instrument room inside is fixed with glass cabin ball, and uncoupling rigging is positioned at the instrument room top, and base is positioned at the instrument room bottom; Affixed with taut wire between uncoupling rigging and base, instrument room to be fixed in the base, the instrument room middle part is equipped with the safety loop of a ring-type; First potential electrode is fixedly mounted on the safety loop, and second potential electrode is installed on the balance weight mechanism, and potential electrode is connected by the data acquisition unit of underwater cable with ball inside, glass cabin, and the measurement pole span of potential electrode reaches 500m; Release is fixedly connected on the balance weight mechanism; Wherein uncoupling rigging 1, separates with base 6 when being used for instrument room 2 recovery; Instrument room 2 is used to uncoupling rigging 1 that fixed pivot is provided, and provides protection for glass cabin ball 16 simultaneously; Safety loop 3 is used for the instrument room structural defence, is the plastic hoop of external diameter 55cm, internal diameter 45cm, thick 0.6cm; Taut wire 4 is used for fixedly uncoupling rigging and base, and material is model 316 stainless steels (316 are the stainless steel model); Locking Luo bolt 5 is used for fastening taut wire and base, and material is 316 stainless steels; Base 6 is used for providing gravity traction and the protection of instrument room 2, adopts glass-reinforced plastic material; Potential electrode 7, the electric field signal that is used for neritic province domain to be measured is measured; Underwater cable 8, for the data acquisition unit that connects two potential electrode and ball inside, glass cabin, and the conduct electricity field signal; Release 9, the buoyancy character that is used for balance weight mechanism 10 changes and recovery; Balance weight mechanism 10 is used for 7 tractions of second potential electrode are sunk down into the seabed; Connection cable 11 is used for being connected of release 9 and balance weight mechanism 10; Set collar 12 is used for hawser is fixed on balance weight mechanism 10; Annular buckle 13 is used for potential electrode 7 fixing; Fixing-line device 14 for the pulling force buffer of underwater cable 8 with potential electrode 7 junctions, prevents that stress from acting directly on the watertight connector 32 of potential electrode.
Wherein, ball top in glass cabin is fixed with underwater sound sensor.Fixed support is equipped with in ball inside, glass cabin, and data acquisition unit and electric supply installation are fixedly mounted on the fixed support.Described fixed support is the double-ring structure; Described potential electrode is solid-state silver-silver chloride electrode, and totally 2 formation electrode pairs outsidely encapsulate with sponge plastics; First potential electrode is installed in instrument room, is connected to glass cabin ball by underwater cable; Second potential electrode is packed on the balance weight mechanism, is connected to glass cabin ball by underwater cable.Described glass cabin ball is 13 inches withstand voltage hollow glass ball.
Preferably, set firmly a disk in the groined type upper surface middle part of described base, the diameter of disk and instrument room bottom cylindrical are suitable; The base bottom is evenly distributed with a plurality of clamping screws, and each clamping screw and every taut wire lower end are dismountable affixed, closely link to each other with uncoupling rigging by corrosion-resistant taut wire.
Preferably, described two potential electrode 7 are solid-state silver-silver chloride electrode, and first potential electrode is packed on the instrument room 2, second potential electrode is packed on the balance weight mechanism 10, be connected to the digital collection parts by underwater cable 8, according to actual needs, the potential electrode spacing can be 100-500m.
Preferably, utilize water that the buoyancy of glass cabin ball 16 is reclaimed described measuring deck 2, described balance weight mechanism 10 reclaims by acoustic releaser 9.
In another aspect of this invention, provide a kind of shallow sea of using to carry out the method for seabed electric field detecting with large pole span submarine electric field instrument, comprise step:
(1) the delivery ship navigates by water to setting measurement point position A by GPS navigation, carries out GPS to clock, will be transferred to from the time reference signal that satellite obtains the shallow sea with large pole span submarine electric field instrument, then sets acquisition time and parameter;
(2) instrument room and base are thrown in into the sea, instrument room is subjected to the base gravity traction after the entry, and free subsidence is to the seabed;
(3) the delivery ship is constantly thrown in underwater cable in the seawater in the stroke according to setting the orientation to measurement point position B navigation;
(4) the delivery ship after arriving and establishing measurement point position B is thrown in balance weight mechanism and release into the sea;
(5) shallow sea is carried out shallow sea electric field signal collection with large pole span submarine electric field instrument according to time and the parameter set;
(6) after measurement finished, waited in the original place, seabed with large pole span submarine electric field instrument in the shallow sea;
(7) send the acoustics release signal on the sea to instrument room, instrument room will separate with base and float to the sea;
(8) disconnect the underwater cable that is attached thereto behind the collection apparatus cabin, and the release on balance weight mechanism sends the acoustics release signal;
(9) the delivery ship navigates by water to measurement point position B recovery balance weight mechanism and underwater cable;
(10) extract with the data of large pole span submarine electric field instrument instrument internal being stored in the shallow sea, and Treatment Analysis.
Use is from technique scheme, and the present invention has following beneficial effect:
1, this shallow sea provided by the invention is with large pole span submarine electric field instrument, and measuring pole span has geometric series to increase than conventional seabed electric field measurement device, and can adjust according to the actual requirements, Effective Raise receiving sensitivity.
2, this shallow sea provided by the invention is with large pole span submarine electric field instrument, installs lightly, and overall power is low, and small boat can be carried out offshore operation, is suitable for electric field measurement at the bottom of the shallow sea.
Description of drawings
Fig. 1 is with large pole span submarine electric field instrument three-dimensional structure diagram according to shallow sea of the present invention;
Fig. 2 is with large pole span submarine electric field instrument longitudinal section synoptic diagram according to shallow sea of the present invention;
Fig. 3 is with large pole span submarine electric field instrument uncoupling rigging structural drawing according to shallow sea of the present invention;
Fig. 4 is with large pole span submarine electric field instrument understructure synoptic diagram according to shallow sea of the present invention;
Fig. 5 is according to the electrode structural chart of shallow sea of the present invention with large pole span submarine electric field instrument.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.Below in conjunction with accompanying drawing the present invention is described in further detail:
As shown in Figure 1, for shallow sea of the present invention with large pole span submarine electric field instrument structural representation, mainly contain uncoupling rigging 1, instrument room 2, base 6, potential electrode 7, underwater cable 8, release 9, balance weight mechanism 10 7 parts and form.Base 6 is positioned at the instrument bottom, instrument room 2 is placed base 6, and uncoupling rigging 1 places instrument room 2 tops, be wound in fixed interface on the uncoupling rigging 1 with many taut wires 4 after, with many taut wires 4 of a plurality of clamping screw 5 tensions, instrument room 2 and base 6 are fixed together.One of potential electrode 7 is fixed on the safety loop 3 with annular buckle 13, and two of potential electrode 7 is fixed on the balance weight mechanism 10, is connected respectively to collector by underwater cable 8.Release 9 is connected on the balance weight mechanism 10 by connection cable 11 and set collar 12.
That underwater cable 8 adopts is wear-resisting, tensile strength large (4900N), and density is the watertight cable of light (weight 0.12kg/m in the air, weight 0.0225kg/m in the seawater), and its sheath material is for reinforcing dacron.The conduction of electric field signal realizes that by underwater cable 8 length of spread of electrodes is decided by desired signal/noise ratio, can be according to the actual requirements 100m to 500m.Known seabed electric field detecting device adopts and measures pole span is 10m, easily is disturbed, and often can't obtain useful signal in the neritic area.But adopt the mode Effective Raise desired signal of large pole span/noise ratio, improved detection sensitivity.
The amplitude of electric field signal and distance dependent, in same tested zone, the span between the every pair of potential electrode is larger, and the signal amplitude of then surveying is larger.Therefore, in order to guarantee to measure the intensity of electric field signal, increasing spread of electrodes is an effective way, can improve to receive signal to the signal to noise ratio (S/N ratio) of potential electrode, thereby improve receiving sensitivity.Survey these problems face for the shallow sea electric field signal, the shallow sea that the present invention proposes is with large pole span submarine electric field instrument, and spread of electrodes is 500m, has increased by 50 times than present measurement mechanism, is applicable to the electric field signal detection of neritic area.
Release 9 adopts the self-floating acoustic releaser, and concrete model is: FiobuoyAC200 is made of operating depth 200m, buoyancy 8kg underwater portion and deck unit.Set collar 12 is made for high-strength engineering plastic, is bolted on the balance weight mechanism 10, and the underwater portion of this release joins with it by hawser 11, with balance weight mechanism 10 sinks to seabed when throwing at sea.Send signal by deck unit behind the end-of-job, the underwater portion obtaining information is also decoded, is fed back and realize the buoy come-up, thereby reclaims balance weight mechanism 10, potential electrode 7 and underwater cable 8.
Balance weight mechanism 10 adopts glass steel material to make, and is shaped as cube, and effect is to provide the stable fulcrum of potential electrode 7 in the seabed, and set collar 12 and fixing-line device 14 are bolted on the balance weight mechanism 10.When throwing in the sea, bring electrode 7 and release 9 into seabed by the self gravitation draw, reclaim by release 9 behind the end-of-job.
As shown in Figure 2, instrument room 2 is divided into second cabin, and placing glass cabin ball 16 in the cabin is fixed glass cabin ball 16 by spiral compression.Safety loop 3 is a circular ring plastic plate, by spiral compression upper second junction, cabin at instrument room 2, is used for instrument room 2 structural defences.Glass cabin ball 16 is divided into upper and lower hemispheres, and seam crossing seals by clay and adhesive tape.Underwater sound sensor 15 is installed in glass cabin ball 16 episphere outer tip end, is used for depth of water communication signal and receives and reply.Watertight card i/f 17 is installed in glass cabin ball 16 episphere outer walls, is connected with underwater cable 8.Data acquisition unit 18 and electric supply installation 20 are installed in ball 16 inside, glass cabin by fixed support 19, and data acquisition unit 18 is fixed by screws in the top of fixed support 19, and electric supply installation 20 is installed in all sides of fixed support 19.
13 inches glass cabin balls that glass cabin ball 16 adopts Vitrovex company to produce, volume is little, lightweight, is used for the withstand voltage protection of intraware, the buoyancy when providing simultaneously instrument room 2 to rise.
Data acquisition unit is 24 collectors, is used for gathering electric field signal, is fixedly installed in the fixed support upper strata, adopts little power consumption to gather memory technology, power consumption 0.2W, and noise is low, power consumption is little.Data acquisition unit 19 is used for collection and the storage of each sensor detection signal, wherein: a) front discharge road signal input part adds and joins single order Passive LC low pass frequency overlapped-resistable filter, adopt utmost point low-noise accurate dual operational amplifier to consist of the instrument amplification circuit, gain is 30dB, it is 10nv/ √ Hz@1Hz that the amplifying circuit noise is folded to input end, has very high antijamming capability; B) oscillatory circuit of instrument employing temperature compensating crystal oscillator formation is as internal clocking, and its precision is better than 5 * 10 in 0 ℃ to 4 ℃ temperature range
-8C) data storage capacity is 32GB; D) adopt CMOS type device, low voltage power supply, the work clock of lower frequency reduces the idle power consumption of system, overall power＜0.3W simultaneously.The power supply supply burden that alleviated low in energy consumption of single unit system has guaranteed to stay the sea activity duration.
Electric supply installation 20 adopts lithium battery, and 12 pieces of 10AH lithium batteries are adopted with large pole span submarine electric field instrument in every shallow sea, lithium battery are installed on all sides of fixed support 10 by Plastic Bandage.
As shown in Figure 3, uncoupling rigging 1 is double-decker, comprise stainless steel Luo post 24, ring Luo bar back up pad 25, wrapping wire fixed head 29, wherein, be arranged in parallel up and down around silk fixed head 29 and ring Luo bar back up pad 25, with several stainless steels Luo post 24 that both are affixed, after passing wrapping wire fixed head 29, two Luo posts in the stainless steel Luo post 24 interconnect, consist of suspension hook 28; Ring Luo bar back up pad 25 diameter of bores and instrument room 2 top outside diameters are suitable.Wrapping wire fixed head 29 upper surfaces are provided with positive pole 21, unhook slide block 26, wrapping wire nail 27, negative pole 30; positive pole 21, negative pole 30 are positioned at the relative both sides of wrapping wire fixed head 29 diameter of bore directions; set nut 22 is spirally connected behind the socket silk pressing pad 23 on anodal 21; set nut 22 is spirally connected behind the socket silk pressing pad 23 on the socket negative pole protective sleeve 31, anodal 21 on the negative pole 30.A steel wire is followed closely 27 coiled rings with order through all wrapping wires through anodal 21, and tighten up the location with set nut 22 and wrapping wire nail 27, unhook slide block 26 is fixed on the wrapping wire fixed head 29, steel wire and two negative poles 30 touch.Utilize characteristic of ocean when instrument reclaims, carry out the electrocorrosion steel wire at two striking point places, unhook slide block 26 is tightened up steel wire 4 and pulls out, and instrument room 2 namely utilizes the buoyant of sea water come-up.
In another program, uncoupling rigging is bolted the top that is installed on instrument room.Uncoupling rigging is double-decker, comprise stainless steel Luo post, ring Luo bar back up pad, wrapping wire fixed head, wherein, be arranged in parallel up and down around silk fixed head and ring Luo bar back up pad, with several stainless steels Luo post that both are affixed, interconnect after two Luo posts in the stainless steel Luo post pass the wrapping wire fixed head, consist of suspension hook; Ring Luo bar back up pad diameter of bore and instrument room top outside diameter are suitable.Be provided with positive pole, unhook slide block, wrapping wire nail, negative pole around silk fixed head upper surface, a steel wire is followed closely the coiled ring through anodal and order through all wrapping wires, and tighten up the location with set nut and wrapping wire nail, when reclaiming, instrument utilize characteristic of ocean to carry out electrocorrosion fusing steel wire, the unhook slide block is tightened up steel wire and pulls out, instrument room namely utilizes the buoyant of sea water come-up, in order to reclaim.
This embodiment also can use the uncoupling rigging that is not shown specifically in Figure of description, its concrete structure sees also formerly disclosed technology of applicant.
As shown in Figure 4, base 6 adopts glass-reinforced plastic material to make, and sets firmly a disk in the groined type upper surface middle part, and the diameter of disk and instrument room 2 bottom cylindricals are suitable, are used for 2 bottoms, retainer instrument cabin.Base 6 bottom peripheral edge places are uniform-distribution with 8 locking Luo bolts 5; Clamping screw 5 is dismountable affixed with taut wire 4 lower ends, closely link to each other with uncoupling rigging 1 by four corrosion-resistant taut wires 4, its weight and volume is suitable for control rate of sinking and sinking attitude in the sinking process, and can keep correct attitude when instrument sinks to the seabed, and work provides reliable and stable pedestal in the seabed with large pole span submarine electric field instrument for the shallow sea.After instrument is received release signal, instrument room 2 come-ups, base 6 is stayed the seabed.
As shown in Figure 5, the sectional view for potential electrode 7 comprises: watertight connector 32, fluid sealant 33, set collar 34, sponge plastics outer cover 35, silver-silver chloride electrode 36.Silver-silver chloride electrode 36 carries out waterproof sealing with watertight connector 32 junctions by fluid sealant 33, is installed in the set collar 34; Set collar 34 and sponge plastics outer cover 35 are connected by screw thread rotation.Totally two of potential electrode 7, first potential electrode is installed on the safety loop 3, and second potential electrode is installed on the balance weight mechanism 10.Be provided with fixing-line device 14 between underwater cable 8 and the watertight connector 32, be used to provide center of effort, prevent that pulling force from acting directly on the watertight connector 32.Fixing-line device 14 is made by glass-reinforced plastic material, and underwater cable 8 twines first when being connected with electrode thereon, is fixed by bolt, is connected with potential electrode again.
Use the shallow sea to carry out the method for seabed electric field measurement with large pole span submarine electric field instrument:
The first step, some position A and B according to the input of geology task setting needs, the delivery ship navigates by water to setting measurement point position A by GPS navigation, before entering the sea, instrument carries out GPS to clock, the shallow sea be will be transferred to from the time reference signal that satellite obtains with large pole span submarine electric field instrument, acquisition time and parameter then set;
Second step throws in instrument room and base into the sea, and instrument room is subjected to the base gravity traction after the entry, and free subsidence is to the seabed;
In the 3rd step, the delivery ship is constantly thrown in underwater cable in the seawater in the stroke according to setting the orientation to measurement point position B navigation;
In the 4th step, the delivery ship after arriving and establishing measurement point position B is thrown in balance weight mechanism and release into the sea, is lowered into the seabed in the gravity traction effect;
In the 5th step, the shallow sea is carried out the electric field signal collection with large pole span submarine electric field instrument according to time and the parameter set;
In the 6th step, after measurement finished, instrument was waited in the original place, seabed;
The 7th step, send the acoustics release signal on the sea to instrument room, instrument room will separate with base and float to the sea, and base is stayed the seabed;
In the 8th step, disconnect the underwater cable that is attached thereto behind the collection apparatus cabin, and the release on balance weight mechanism sends the acoustics release signal;
In the 9th step, ship navigates by water to measurement point position B recovery balance weight mechanism and underwater cable;
The tenth step, the data that are stored in instrument internal are extracted, and Treatment Analysis.
Above-described implementation example; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is implementation example of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a shallow sea comprises uncoupling rigging, instrument room, base, underwater cable, two potential electrode, release and balance weight mechanisms with large pole span submarine electric field instrument; Wherein instrument room inside is fixed with glass cabin ball, and uncoupling rigging is positioned at the instrument room top, and base is positioned at the instrument room bottom; Affixed with taut wire between uncoupling rigging and base, instrument room to be fixed in the base, the instrument room middle part is equipped with the safety loop of a ring-type; First potential electrode is fixedly mounted on the safety loop, and second potential electrode is installed on the balance weight mechanism, and potential electrode is connected by the data acquisition unit of underwater cable with ball inside, glass cabin, and the measurement pole span of potential electrode reaches 500m; Release is fixedly connected on the balance weight mechanism; Wherein,
Uncoupling rigging (1) separates with base (6) when being used for instrument room (2) recovery;
Instrument room (2) is used to uncoupling rigging (1) that fixed pivot is provided, and provides protection for glass cabin ball (16) simultaneously;
Safety loop (3) is used for the instrument room structural defence, is the plastic hoop of external diameter 55cm, internal diameter 45cm, thick 0.6cm;
Taut wire (4) is used for fixedly uncoupling rigging and base, and material is 316 (stainless steel model) stainless steel;
Locking Luo bolt (5) is used for fastening taut wire and base, and material is 316 stainless steels;
Base (6) is used for providing gravity traction and the protection of instrument room (2), adopts glass-reinforced plastic material;
Potential electrode (7), the electric field signal that is used for neritic province domain to be measured is measured;
Underwater cable (8), for the data acquisition unit that connects two potential electrode and ball inside, glass cabin, and the conduct electricity field signal;
Release (9), the buoyancy character that is used for balance weight mechanism (10) changes and recovery;
Balance weight mechanism (10) is used for second potential electrode (7) traction is sunk down into the seabed;
Connection cable (11) is used for being connected of release (9) and balance weight mechanism (10);
Set collar (12) is used for hawser is fixed on balance weight mechanism (10);
Annular buckle (13) is used for potential electrode (7) fixing;
Fixing-line device (14) for the pulling force buffer of underwater cable (8) with potential electrode (7) junction, prevents that stress from acting directly on the watertight connector of potential electrode (32).
According to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, wherein, ball top, glass cabin is fixed with underwater sound sensor.
According to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, wherein, fixed support is equipped with in ball inside, glass cabin, data acquisition unit and electric supply installation are fixedly mounted on the fixed support.
According to shallow sea claimed in claim 3 with large pole span submarine electric field instrument, wherein, described fixed support is the double-ring structure; Described potential electrode is solid-state silver-silver chloride electrode, and totally 2 formation electrode pairs outsidely encapsulate with sponge plastics; First potential electrode is installed in instrument room, is connected to glass cabin ball by underwater cable; Second potential electrode is packed on the balance weight mechanism, is connected to glass cabin ball by underwater cable.
According to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, wherein, described glass cabin ball is 13 inches withstand voltage hollow glass ball.
According to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, wherein, set firmly a disk in the groined type upper surface middle part of described base, cylindrical is suitable bottom the diameter of disk and the instrument room; The base bottom is evenly distributed with a plurality of clamping screws, and each clamping screw and every taut wire lower end are dismountable affixed, closely link to each other with uncoupling rigging by corrosion-resistant taut wire.
According to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, wherein, described two potential electrode (7) are solid-state silver-silver chloride electrode, first potential electrode is packed on the instrument room 2, second potential electrode is packed on the balance weight mechanism (10), be connected to the digital collection parts by underwater cable (8), according to actual needs, the potential electrode spacing can be 100-500m.
According to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, it is characterized in that, utilize water that the buoyancy of glass cabin ball (16) is reclaimed described measuring deck (2), described balance weight mechanism (10) reclaims by acoustic releaser (9).
9. carry out the method for seabed electric field detecting according to shallow sea claimed in claim 1 with large pole span submarine electric field instrument, comprise step:
(1) the delivery ship navigates by water to setting measurement point position A by GPS navigation, carries out GPS to clock, will be transferred to from the time reference signal that satellite obtains the shallow sea with large pole span submarine electric field instrument, then sets acquisition time and parameter;
(2) instrument room and base are thrown in into the sea, instrument room is subjected to the base gravity traction after the entry, and free subsidence is to the seabed;
(3) the delivery ship is constantly thrown in underwater cable in the seawater in the stroke according to setting the orientation to measurement point position B navigation;
(4) the delivery ship after arriving and establishing measurement point position B is thrown in balance weight mechanism and release into the sea;
(5) shallow sea is carried out shallow sea electric field signal collection with large pole span submarine electric field instrument according to time and the parameter set;
(6) after measurement finished, waited in the original place, seabed with large pole span submarine electric field instrument in the shallow sea;
(7) send the acoustics release signal on the sea to instrument room, instrument room will separate with base and float to the sea;
(8) disconnect the underwater cable that is attached thereto behind the collection apparatus cabin, and the release on balance weight mechanism sends the acoustics release signal;
(9) the delivery ship navigates by water to measurement point position B recovery balance weight mechanism and underwater cable;
(10) extract with the data of large pole span submarine electric field instrument instrument internal being stored in the shallow sea, and Treatment Analysis.
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| CN104155532A (en) * | 2014-08-08 | 2014-11-19 | 苏州格林泰克科技有限公司 | Marine electric field measuring device |
| CN104535847A (en) * | 2014-12-30 | 2015-04-22 | 中国科学院地质与地球物理研究所 | Combined oceanic electric field sensor |
| CN105627980A (en) * | 2016-03-21 | 2016-06-01 | 大连理工大学 | Marine gas hydrate exploitation stratum deformation real-time monitoring device |
| CN106680877A (en) * | 2017-01-19 | 2017-05-17 | 中国科学院地质与地球物理研究所 | Low-power-consumption wideband single-compartment-ball sea seismograph |
| CN107290789A (en) * | 2017-05-09 | 2017-10-24 | 中国石油天然气集团公司 | A kind of marine electromagnetic acquisition station |
| CN108828328A (en) * | 2018-04-27 | 2018-11-16 | 中国科学院地质与地球物理研究所 | Portable three-component submarine electric field instrument |
| CN110850481A (en) * | 2019-10-15 | 2020-02-28 | 中国石油天然气集团有限公司 | Electrode fixing device of ocean electromagnetism collection station |
| CN111812693A (en) * | 2020-06-28 | 2020-10-23 | 中国科学院地质与地球物理研究所 | Long-baseline time scale positioning array and control method thereof |
| CN112455631A (en) * | 2020-11-24 | 2021-03-09 | 浙江大学 | Matrix type sensor arrangement device and method suitable for deep sea detection |
| CN114578438A (en) * | 2022-05-05 | 2022-06-03 | 成都理工大学 | Electromagnetic detection system for self-adaptive water area |
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| CN107290789A (en) * | 2017-05-09 | 2017-10-24 | 中国石油天然气集团公司 | A kind of marine electromagnetic acquisition station |
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| CN108828328B (en) * | 2018-04-27 | 2023-11-28 | 中国科学院地质与地球物理研究所 | Portable three-component submarine electric field instrument |
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| CN111812693B (en) * | 2020-06-28 | 2021-04-20 | 中国科学院地质与地球物理研究所 | Long-baseline time scale positioning array and control method thereof |
| CN112455631A (en) * | 2020-11-24 | 2021-03-09 | 浙江大学 | Matrix type sensor arrangement device and method suitable for deep sea detection |
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