CN204228203U - A kind of three instrument one earth dynamic monitors - Google Patents
A kind of three instrument one earth dynamic monitors Download PDFInfo
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- CN204228203U CN204228203U CN201420712698.5U CN201420712698U CN204228203U CN 204228203 U CN204228203 U CN 204228203U CN 201420712698 U CN201420712698 U CN 201420712698U CN 204228203 U CN204228203 U CN 204228203U
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Abstract
The utility model discloses a kind of three instrument one earth dynamic monitors, comprise the basement rock of earth surface, be provided with GNSS receiving antenna at basal surfaces, the basement rock inside below tested point is provided with the instrument room of an isolated outside noise; Be provided with a vacuum, gravity sight chamber bottom instrument room immediately below tested point, in vacuum, gravity sight chamber, absolute gravimeter be installed; The geometric central axis line of absolute gravimeter overlaps with the geometric central axis line of GNSS receiving antenna, and the geometric central axis line round GNSS receiving antenna in instrument room is evenly distributed with gyroscope.The utility model is convenient to measure the impact of great seismic events on earth motion state, comprise and utilize absolute gravimeter and GNSS to measure seismic events coseismic deformation, utilize the rule of observed reading time series Study of Seismic event tectonic stress-Fa shake-post earthquake recovery of the change of gravity field non-tide, GNSS and spin velocity.
Description
Technical field
The utility model belongs to geodetic surveying field, relates to monitoring device, is specifically related to a kind of three instrument one earth dynamic monitors.
Background technology
Modern geoscience be study at the same time global tectonics develop and Earth effect basis on set up, be the subjects such as applied geology, geophysics and geodetic surveying, carry out comprehensively and the key subjects of crossing research.
The earth is as a dynamic organic whole, and the structural evolution at its any point place and overall operation must cover many-sided changes such as earth movement, structural deformation, gravity field, autorotation speed and orientation, earth polar.Only from single subject, single visual angle, study on monitoring is carried out to its evolutionary process, certainly exist significant limitation, be difficult to deeply comprehensively being familiar with of entirety, inner structure and the evolution process to planet earth that reach, more impossible further investigated and deduction earth Internal and external cycle layer structural evolution process.Such as, GNSS (Global Navigation Satellite System, GPS (Global Position System)) can Accurate Measurement earth movement and tectonic derormation comparable trend, but cannot provide the material change of corresponding deformation point deep and distribution.Absolute gravity technology can with some internal gravity changes of the micro-gal class precision monitoring earth, but, when studying the non-tide of earth gravity field and changing, still lack high-resolution Crustal Movement and structural deformation field as critical boundaries constraint condition.Interior material Distribution, transfer Changeement depends on the monitoring accuracy of corresponding gravitational field, utilize gyroscope technology Accurate Measurement arbitrfary point rotational-angular velocity of the earth and in conjunction with gravity meter Monitoring Result, be conducive to the gravitational field distribution situation accurately obtaining respective point position.The impact of great seismic events on whole earth be omnibearing, is only be difficult to state after the Co-seismic variations of the comprehensive assessment earth or shake from monotechnics angle.
Therefore, have only from various visual angles, the mode taking intersection thinking, carry out transsubject complex research, just likely correct, the complete understanding earth.Along with the continuous progress of observation technology, make multidisciplinary under comprehensive, many technological means comprehensive monitoring become possibility.But the crossing research of current Earth science polytechnics means also rests on comprehensive all kinds of independent Monitoring Result to carry out in the level of comprehensive analysis.The observation data that different monitoring technology obtains is all serious disunity in time, space or concrete event.Can not realize truly, for the polynary isomery Simultaneous Monitoring of dynamic earth.
Summary of the invention
For in prior art, all kinds of geodynamics observation grid observation content forms of distribution on global are single, the unitarity in the time and space is lacked between the Monitoring Result of counterweight violent earthquake, tectonic event and respective change, cannot in defect or deficiencies such as the Real-Time Monitoring achievements of same station for acquiring continuous print, various visual angles, the purpose of this utility model is, a kind of three instrument one earth dynamic monitors are provided, realize the Multivariate Information In Temporal Spatial Domain Real-Time Monitoring comprising earth gravity field.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme to be achieved:
A kind of three instrument one earth dynamic monitors, comprise GNSS receiving antenna, for determining the three-dimensional coordinate of tested point, and then obtain the three-dimensional deformation information of tested point, the point at the position coordinates place at GNSS receiving antenna place is tested point, it is characterized in that:
The instrument room of an isolated outside noise is provided with below tested point; Be provided with a vacuum, gravity sight chamber bottom instrument room immediately below tested point, in vacuum, gravity sight chamber, absolute gravimeter be installed; Absolute gravimeter is positioned at the mass change information of the quality point on the geometric central axis line of absolute gravimeter for measuring earth interior;
The geometric central axis line of absolute gravimeter overlaps with the geometric central axis line of GNSS receiving antenna, and the change information that the three-dimensional deformation information of tested point and the geometric central axis line of earth interior GNSS receiving antenna are improved quality a little is synchronous over time and space;
Geometric central axis line round GNSS receiving antenna in instrument room is evenly distributed with gyroscope, and gyroscope is for measuring rotational-angular velocity of the earth.
The utility model also has following technical characteristic:
Described instrument room is arranged within the scope of below basal surfaces 10m ~ 15m, makes the instrument in instrument room that outside noise can be avoided to disturb.
Described gyroscope is three, is distributed on the point on the geometric central axis line of GNSS receiving antenna for the center of circle, radius be the bottom surface, instrument room of 3m circumferentially.
Described GNSS receiving antenna, absolute gravimeter and gyroscope are installed on instrument pier.
The utility model compared with prior art, has following technique effect:
The utility model can realize the Multivariate Information In Temporal Spatial Domain Real-Time Monitoring comprising earth gravity field; To refine Local Gravity Field; Front and back earth external and internal compositions and mass motion state and structural adjustment occur real-time assessment great seismic events changes; On time and space double scales, realize the polynary simultaneous observation that ground deformation field and deep material transport change.This system can, continuous print multivariate data collection synchronous for certain some enforcement tellurian.The VARIATION OF GRAVITY FIELD in the same place of synchronous acquisition, the meticulous transition state of interior material, earth movement and the diversification observing buoy such as tectonic derormation state and earth rotation parameter (ERP).
The non-tide change of gravity field not only with earth movement, mantle convection, earth interior density interface, the i.e. change of core-mantle boundary, material variation in deep is relevant, even with epigeosphere factor, as faulting, underground water, sediment transport, and large-scale construction project has relation.Because the Changing Pattern of associated various factors is still not bery understood up to now, therefore the research of the non-tidal fluctuations of gravity field seems very difficult.By being combined with GNSS system by gravity meter, unified time, spatial domain observation being carried out to fixed area, will contribute to studying the mutual relationship between the change of gravity field non-tide and earth movement, structural deformation.
Be convenient to measure the impact of great seismic events on earth motion state, comprise and utilize absolute gravimeter and GNSS to measure seismic events coseismic deformation, utilize the rule of observed reading time series Study of Seismic event tectonic stress-Fa shake-post earthquake recovery of the change of gravity field non-tide, GNSS and spin velocity.
Freely shaking of the planet earth self utilizing the great seismic events of gyroscope mensuration monitoring to cause, freely shakes and can be divided into radial Ghandler motion change and tangential torsional variation.Therefore can while assessment relative earthquake event affect local crustal structure and species distribution state, monitor earthquake is to the corrective action of the motion state of earth entirety.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Fig. 2 is mounted in the instrument pier structure schematic diagram below instrument of the present utility model.
In figure, the implication of each label is: 1-basement rock, 2-GNSS receiving antenna, 3-tested point, 4-instrument room, 5-vacuum, gravity sight chamber, 6-absolute gravimeter, 7-gyroscope, 8-geometric central axis line is the geometric center lines of GNSS receiving antenna, again the geometric center lines of absolute gravimeter, 9-instrument pier.
Below in conjunction with accompanying drawing, explanation is further explained in detail to particular content of the present utility model.
Embodiment
Below provide specific embodiment of the utility model, it should be noted that the utility model is not limited to following specific embodiment, all equivalents done on technical scheme basis all fall into protection domain of the present utility model.
Embodiment:
Defer to technique scheme, as depicted in figs. 1 and 2, this gives a kind of three instrument one earth dynamic monitors, comprise the basement rock 1 of earth surface, at basement rock 1 end face, GNSS receiving antenna 2 is installed, geometric central axis line 8 at right angle setting of GNSS receiving antenna 2, GNSS receiving antenna 2 for determining the three-dimensional coordinate of tested point 3, and then obtains the three-dimensional deformation information of tested point 3;
Described tested point 3 is point crossing with the geometric central axis line of GNSS receiving antenna 2 on basement rock 1 end face, and namely the point at the position coordinates place at GNSS receiving antenna 2 place is tested point 3;
Basement rock 1 inside below tested point 3 is provided with the instrument room 4 of an isolated outside noise; Be provided with a vacuum, gravity sight chamber 5 bottom instrument room 4 immediately below tested point 3, absolute gravimeter 6 is installed in vacuum, gravity sight chamber 5; Absolute gravimeter 6 is positioned at the mass change information of the quality point on the geometric central axis line 8 of absolute gravimeter 6 for measuring earth interior;
The geometric central axis line 8 of absolute gravimeter 6 overlaps with the geometric central axis line 8 of GNSS receiving antenna 2, and the change information that the three-dimensional deformation information of tested point 3 and the geometric central axis line 8 of earth interior GNSS receiving antenna 2 are improved quality a little is synchronous over time and space;
Geometric central axis line 8 round GNSS receiving antenna 2 in instrument room 4 is evenly distributed with gyroscope 7, and gyroscope 7 is for measuring rotational-angular velocity of the earth.
Instrument room 4 is arranged within the scope of below basement rock 1 end face 10m ~ 15m, makes the instrument in instrument room 4 that outside noise can be avoided to disturb, and ensures the accuracy of measurement of instrument.
Gyroscope 7 is three, be distributed on the point on the geometric central axis line 8 of GNSS receiving antenna 2 as the center of circle, radius be the bottom surface, instrument room 4 of 3m circumferentially, this distribution mode can be avoided mutually disturbing between gyroscope 7, and can Measurement accuracy rotational-angular velocity of the earth.Gyroscope 7 adopts high precision magnetic levitation gyroscope.
GNSS receiving antenna 2, absolute gravimeter 6 and gyroscope 7 are installed on instrument pier 9, the height of instrument pier 9 end face distance installation ground is d is about 300mm, instrument and installation ground being kept apart by instrument pier 9, is also the measurement accuracy in order to ensure whole device.
Device of the present utility model is monitor the earth dynamically in the mode of network-like distribution each local installation in actual applications, installs addressing and requires:
(A) device of the present utility model need be laid on the basement rock 1 of ground solid, broad view, and the spacing of adjacent two devices should be greater than 50km.Consider the variation characteristic of monitoring accuracy with latitude of gyroscope 7, the distribution of this device is preferential with the bouguer gravity anomaly gradient zone within north and south latitude 25 ° of scopes.
(B) should avoid large at factor of porosity, that water-taking efficiency is high loose crushing basement rock 1 installs this device, on stable Rock, this device should be installed.
(C) with peripheral region geology, hydrologic data for reference, avoid in fault belt, geology point of instability, be easy to come down, depression, the ground local deformation such as protuberance place; Be subject to the place that water logging does not have, moist, underground water table is higher and establish station.
(D) device installation site of the present utility model should be greater than 3km apart from year water level variable 1 ~ 3m and above water system, distance shore line more than distance 10km.
(E) engineering projects such as deep layer is drawn water, water filling, quarry blasting, build reservoir must not be there is within the 3km scope of device installation site of the present utility model.
(F) bulk storage plant, railway, airport, more than three grades A-roads must not be there are within the 1km scope of station, device installation site of the present utility model.
The technical requirement of each isolated system:
A () all appts is all placed on the pressure observation pier of accurately leveling, be linked to be entirety with basement rock 1.
B () instrument room 4 adopts thermostatic control, require Zhou Wen at night Cha≤0.1 DEG C, year Wen Cha≤1 DEG C, instrument room 4 is to Shi Du≤80%.
Acceleration of gravity amount of distortion 48h Nei≤4 × 10 of (c) gravimetric observation
-8m/s
2, the sudden variable quantity of acceleration of gravity should be not more than 4 × 10
-8m/s
2.
D () is due to the sensivity feature of absolute gravimeter 6 pairs of surrounding environment, apparatus design of the present utility model is vacuum, gravity sight chamber 5 independently, absolute gravimeter 6 is positioned at 2m position below the plane of gyroscope 7 place, with the geometric center of gyroscope 7 for tolerance, to reduce outside air resistance, dust further to the impact of gravimetric observation degree of accuracy.
The course of work of the present utility model is as described below:
Native system measurement takes into account the change of survey station position ground three-D displacement, the change of geometric central axis line 8 VARIATION OF GRAVITY FIELD, revolutions state on a macro scale.The data acquisition of the synchronous real-time multiplex of native system system.During system cloud gray model, carry out individual data acquisition respectively by GNSS receiving antenna 2, absolute gravimeter 6 and three gyroscopes 7, and the outcome data System that will collect, to carry out overall treatment in time.
Particularly, GNSS receiving antenna 2, absolute gravimeter 6 and three gyroscopes 7 all require forced centering and accurately leveling, wherein double frequency choking coil antenna and the gyroscope 7 of GNSS receiving antenna 2 require to point to northern to, deviation is no more than 5 °.
1) whole system operational process, GNSS receiving antenna 2 is placed in the top surface of station place basement rock 1.Continuous reception GNSS satellite constellation signals, and utilize BERNESE two fatware of the GAMIT/GLOBK of Massachusetts Institute Technology and Switzerland to carry out the adjustment processing of data.Its processing procedure is mainly divided into four steps to complete:
The first step, utilizes GAMIT software to obtain the odd-numbered day lax solution of survey station coordinate and satellite orbit.This project monitoring point quantity is more, needs multidomain treat-ment.
Second step, GLOBK software is utilized to separate lax for every day in the one or more odd-numbered day obtained and IGS data processing centre (DPC) SOPAC (Scripps Orbital and Permanent Array Center, http://sopac.ucsd.edu) odd-numbered day lax solution of global IGS tracking station of output merge, obtain odd-numbered day of an inclusion region point and all IGS tracking stations laxly to separate.This odd-numbered day solution gives lax solution and the variance-covariance battle array of survey station coordinate, Ghandler motion and satellite orbit parameter.
3rd step, the odd-numbered day utilizing QOCA software (http://gipsy.jpl.nesa.gov/QOCA) comprehensively all, lax solution estimated survey station position and speed.
4th step, utilizes BERBESE software to verify calculation result, and the point larger to error corrects.
2) float-type gyroscope 7 is utilized to obtain earth rotation angle speed parameter:
The first step, obtains teetotum rotating shaft and meridian angle;
Second step, determining instrument position latitude;
3rd step, starts gyroscope survey gyro meridian seeking moment;
3) utilize absolute gravimeter 6 to observe the non-tide change of station geometric central axis line 8 absolute gravity, the combining global distribution station obtains gravity field spatial distribution characteristic and each point time-varying sequence.Revolutions parameter estimator achievement in combination, obtains further respective axis and to refine gravitation position parameter, comprise the following steps:
The first step, utilizes the high precision absolute gravimeter 6 of micro-gal magnitude to obtain system geometric central axis line 8 place terrestrial gravitation value, and calculates corresponding gravity position according to the following formula:
dW＝-gdh
Wherein, dW is the differential of gravity field, and g is observed gravimetric data, and dh is the differential of corresponding elevation;
Second step, utilizes the rotational-angular velocity of the earth parameter that gyroscope 7 measures.Comprise and obtain spin axis of gyro direction and meridian angle α; Utilize the latitude of GPS successive station Accurate Measurement gyro position
gyro meridian seeking moment M, and calculate the rotational-angular velocity of the earth when setting out in advance to make arrangements according to the following formula:
Wherein, M is meridian seeking moment; H is gyro angular momentum (known quantity);
for rotational-angular velocity of the earth;
for settlement latitude; α is teetotum rotating shaft and meridian angle.
3rd step, calculates this some place earth potential of centrifugal force according to the following formula:
Wherein R is earth mean radius of curvature,
measuring point place latitude,
for the rotational-angular velocity of the earth measured.
4th step, calculates this some gravitation position after refining by following formula:
V＝W-Q
Wherein, V is gravitation position, and W is gravity position, and Q is potential of centrifugal force.
Claims (4)
1. an instrument one earth dynamic monitor, comprise GNSS receiving antenna (2), for determining the three-dimensional coordinate of tested point (3), and then obtain the three-dimensional deformation information of tested point (3), the point at the position coordinates place at GNSS receiving antenna (2) place is tested point (3), it is characterized in that:
Tested point (3) below is provided with the instrument room (4) of an isolated outside noise; Bottom, instrument room (4) immediately below tested point (3) is provided with a vacuum, gravity sight chamber (5), is provided with absolute gravimeter (6) in vacuum, gravity sight chamber (5); Absolute gravimeter (6) is positioned at the mass change information of the quality point on the geometric central axis line (8) of absolute gravimeter (6) for measuring earth interior;
The geometric central axis line (8) of absolute gravimeter (6) overlaps with the geometric central axis line (8) of GNSS receiving antenna (2), and the change information that the three-dimensional deformation information of tested point (3) and the geometric central axis line (8) of earth interior GNSS receiving antenna (2) are improved quality a little is synchronous over time and space;
Geometric central axis line (8) round GNSS receiving antenna (2) in instrument room (4) is evenly distributed with gyroscope (7), and gyroscope (7) is for measuring rotational-angular velocity of the earth.
2. monitoring device as claimed in claim 1, it is characterized in that: described instrument room (4) is arranged within the scope of below basement rock (1) end face 10m ~ 15m, make the instrument in instrument room (4) that outside noise can be avoided to disturb.
3. monitoring device as claimed in claim 1, it is characterized in that: described gyroscope (7) is three, be distributed on the point on the geometric central axis line (8) of GNSS receiving antenna (2) for the center of circle, radius be instrument room (4) bottom surface of 3m circumferentially.
4. monitoring device as claimed in claim 1, is characterized in that: described GNSS receiving antenna (2), absolute gravimeter (6) and gyroscope (7) are installed on instrument pier (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420712698.5U CN204228203U (en) | 2014-11-24 | 2014-11-24 | A kind of three instrument one earth dynamic monitors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420712698.5U CN204228203U (en) | 2014-11-24 | 2014-11-24 | A kind of three instrument one earth dynamic monitors |
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| CN204228203U true CN204228203U (en) | 2015-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143156A (en) * | 2017-06-23 | 2017-09-08 | 甘肃省地震局 | The recyclable seismological observation room of quick-assembling and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143156A (en) * | 2017-06-23 | 2017-09-08 | 甘肃省地震局 | The recyclable seismological observation room of quick-assembling and construction method |
| CN107143156B (en) * | 2017-06-23 | 2021-12-28 | 甘肃省地震局 | Quickly-assembled recyclable earthquake observation room and construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20181124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |