CN102288985A - Crustal stress sensing unit structure for imminent earthquake monitoring of earthquake - Google Patents
Crustal stress sensing unit structure for imminent earthquake monitoring of earthquake Download PDFInfo
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- CN102288985A CN102288985A CN2011101159971A CN201110115997A CN102288985A CN 102288985 A CN102288985 A CN 102288985A CN 2011101159971 A CN2011101159971 A CN 2011101159971A CN 201110115997 A CN201110115997 A CN 201110115997A CN 102288985 A CN102288985 A CN 102288985A
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Abstract
The invention discloses a custal stress sensing unit structure for imminent earthquake monitoring of an earthquake. The custal stress sensing unit structure can be arranged underground for integrally monitoring the custal stress, vibration, temperature and humidity, and comprises one or more sensors for sensing the custal stress, the vibration, the temperature and the humidity as well as a matched preposed amplifying circuit. The preposed amplifying circuit is used for preprocessing the received sensor signal and transmitting the processed sensor signal to a subsequent processing circuit. The sensing unit structure adopts a special stainless steel casing and is made of special filling material, thus the sensing unit structure can resist corrosion, high pressure and water.
Description
[technical field]
The present invention relates to seismic monitoring instrument and meter and sensor and circuit design field, be specifically related to a kind of low cost, can the dense layout monitoring point, thereby cover the method for the impending earthquake monitoring of any large area region.
[background technology]
The basis of earthquake prediction is an earthquake precursors, and the basis of earthquake precursors is the precision of monitoring in real time and the distribution density of real-time monitoring point.Analyze earthquake precursors, refine earthquake precursors and determine that an earthquake precursors needs normal background unusually, continuous, stable monitoring, and the monitoring point is abundant.
Li Si Mr. light has founded the method for utilizing terrestrial stress to predict earthquake.So-called terrestrial stress just is meant the stress that is present in the earth's crust, and it comprises the stress that is produced by underground heat, gravity, earth rotation speed variation and other factors.Because earthquake is the internal force of the earth breaks through lithosphere and causes, so when lithosphere suffered the internal force extruding, terrestrial stress balance had originally just been broken, and has produced the variation of terrestrial stress.The seismologist just can dope earthquake from the curve of terrestrial stress variation.If it is abundant that the real-time monitoring point of terrestrial stress distributes, the big terrestrial stress on the ground of China just changes can just be expected to dope time, place, earthquake magnitude and the earthquake intensity of earthquake by fully perception.
Prediction about imminent earthquakes is to catch premonitory phenomenon and provide prediction by pouncing on.And common premonitory phenomenon such as earth strain are quickened or grand liters in ground, VARIATION OF GRAVITY FIELD, changes of magnetic field, electric field change, subsurface resistivity variations, WATER LEVEL CHANGES, underground fluid flow, the ground water chemistry composition changes, the Atmospheric Chemistry composition changes and some other possibility counter stress, to the variation of the parameter of the variation sensitivity of the rubbing characteristics of crackle in the rock or rock.
At terrestrial stress, ground temperature, earth magnetism, water level, earthquake sounds is in the multiple earthquake precursorss such as acoustic emission of ground strain, and ground stress anomally changes repeatedly forecasts confirmation through China, is generally accepted.The monitoring instrument of earthquake sounds is not also come out at present.
Earthquake essence is that the elastic strain energy that accumulates in the stratum discharges.According to St.Venant local influence principle (St.Venant in the Elasticity, the France academician of academy of sciences, elastic force scholar), the tectonic stress that earthquake is caused at the focal body place is a balanced system of force, only can make the focal area produce significant ess-strain nearby, and ess-strain at a distance increase decay rapidly with distance.No matter the earthquake of which kind of type, so long as the earthquake that stress accumulation causes, the rock stratum must experience from the non-linear elasticity distortion approaching a series of strain variation of linear elasticity distortion before breaking.Lay strainmeter at focus and neighborhood, just can monitor the strain variation process of stratum media under the tectonic stress effect.
Yet, the earthquake precursor observation station based on current earthquake precursors monitoring method foundation needs the millions of first costs of erection of investment, needs tens floor area of building to the hundreds of square meter, hundreds of to arrive the land area of several thousand square meters, equipment etc. need operations staff and more running cost simultaneously.If intensive foundation, resource consumption is huge, is difficult to realize.Be example with Liaoning Province today, about 34 of the precursor observation station, about 10 of wherein measuring terrestrial stress, the earthquake precursors monitoring that may not cover whole Liaoning Province.Therefore, the terrestrial stress that can't obtain the focal area changes, with and in time evolution state, more can't obtain the regional STRESS VARIATION image in big zone, especially obtain less than taking place before the earthquake and shake back STRESS VARIATION, the process of adjusting, redistributing and state.The key of dealing with problems is to realize that low cost, the wide terrestrial stress that covers change and the real-time monitoring of earthquake sounds.
[summary of the invention]
Fundamental purpose of the present invention is exactly the problem that solves the intensive construction of the monitoring point that is difficult to realize in the existing impending earthquake monitoring technology, a kind of sensing unit structure that is used for impending earthquake monitoring terrestrial stress is provided, have low cost, can the dense layout monitoring point, high pressure resistant, corrosion-resistant, waterproof, the abnormal conditions of the terrestrial stress in monitor large-area zone variation in real time, data are used for impending earthquake monitoring and forecast.
For achieving the above object, the invention provides a kind of specific terrestrial stress sensing unit structure, it is characterized in that: comprise at least one terrestrial stress sensor and corresponding front end circuit; Comprise at least one vibration transducer and corresponding front end circuit, comprise at least one temperature sensor and corresponding front end circuit; Comprise at least one humidity sensor and corresponding front end circuit.The terrestrial stress sensor can obtain the variation of 0.01kPa to the 1000kPa terrestrial stress, vibration transducer can obtain the stratum vibration signal of 0.001Hz to 100Hz, temperature sensor can obtain-20 ℃ to 80 ℃ formation temperature signal, and humidity sensor can obtain 5% to 97% stratum moisture signal.That terrestrial stress sensing unit structure has is corrosion-resistant, high pressure resistant, the characteristics of good waterproof performance and heat conduction.Various sensors have backup more than three.Terrestrial stress sensing unit structure can be imbedded the bottom depths below 200 meters.Terrestrial stress sensing unit structure has the advantage of low cost, high reliability, layout on a large scale
The invention has the beneficial effects as follows:
The low-cost terrestrial stress of monitoring in real time changes, and can comprise the regional dense layout in city, thereby grasp the real-time change of whole monitored area earthquake sounds and terrestrial stress.Solve not have the low cost that realizes for a long time, the problem of setting up of earthquake monitoring point that highly dense intensity, large tracts of land cover, set up detailed, accurate, believable monitoring equipment basis for earthquake precursors analysis and impending earthquake forecast.
[embodiment and description of drawings]
The application's feature and advantage will be by embodiment, in conjunction with the accompanying drawings.
With impending earthquake monitoring center be core system structure as shown in Figure 1, comprise, the monitoring means of terrestrial stress sensing unit and processing unit is sent to monitoring center with the data of local monitoring point, monitoring center analyzes and handles data.
A kind of terrestrial stress sensing unit synoptic diagram has been full of packing material in the 316 type stainless steel right cylinders as shown in Figure 2, and this material is used to protect sensor and inner structure, conduction heat and wet, conduction vibration.Wrap up with piezoelectric vibration sensors the packing material side, the larger area sensor can improve the sensitivity of vibration monitoring, packing material top and bottom are installed the terrestrial stress sensor respectively, sensing front end circuit and Temperature Humidity Sensor near the cylindrical two ends of stainless steel, can prevent the influence of circuit working to humiture respectively.Whole stainless steel right cylinder has a bleeder vent and a bars power lead.
The application-specific of an embodiment of the present invention as shown in Figure 3, in the city every 1 monitoring means of distribution of industrial construction sites (SP) of 1Km, per 100 monitoring means arrive at least one monitoring center (SC) by GPRS or the wireless distributing data of 3G module, urban inner monitoring center is by 3G wireless module and wired interconnected, make each monitoring center can obtain the data of Zone Full monitoring means, thus monitor earthquake omen in real time.Such configuration can guarantee monitoring point of 1 sq-km, and the city of one 10,000 sq-km only needs 10,000 monitoring points.
Above content be in conjunction with a kind of embodiment to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a terrestrial stress sensing unit structure that is used for the impending earthquake monitoring is characterized in that: comprise at least one terrestrial stress sensor and corresponding front end circuit; Comprise at least one vibration transducer and corresponding front end circuit, comprise at least one temperature sensor and corresponding front end circuit; Comprise at least one humidity sensor and corresponding front end circuit.
2. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: described terrestrial stress sensor can obtain the variation of 0.01kPa to the 1000kPa terrestrial stress.
3. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: described vibration transducer can obtain the stratum vibration signal of 0.001Hz to 100Hz.
4. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: described temperature sensor can obtain-20 ℃ to 80 ℃ formation temperature signal.
5. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: described humidity sensor can obtain 5% to 97% stratum moisture signal.
6. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: described terrestrial stress sensing unit structure has the characteristics of corrosion-resistant, high pressure resistant, good waterproof performance and heat conduction.Various sensors have backup more than three.
7. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: described terrestrial stress sensing unit structure can be imbedded the bottom depths below 200 meters.
8. the cellular construction of stress sensing specifically as claimed in claim 1 is characterized in that: terrestrial stress sensing unit structure has the advantage of low cost, high reliability, layout on a large scale.
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| CN101535844A (en) * | 2005-08-30 | 2009-09-16 | 特克斯勒电子实验室公司 | Methods, systems, and computer program products for determining a property of construction material |
| CN201345048Y (en) * | 2008-12-26 | 2009-11-11 | 中国铁路通信信号上海工程有限公司 | Data acquisition and analysis system |
| CN101619989A (en) * | 2008-07-04 | 2010-01-06 | 中国铁路通信信号上海工程有限公司 | System and method for acquiring and analyzing remote data of bridge |
| CN102156294A (en) * | 2011-03-31 | 2011-08-17 | 北京大学深圳研究生院 | Method for monitoring earthquake by utilizing high-rise buildings |
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2011
- 2011-05-05 CN CN2011101159971A patent/CN102288985A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005312410A (en) * | 2004-03-31 | 2005-11-10 | Tsukuba Multimedia:Kk | Automatic acquisition system of experimental observation data by web camera |
| CN101535844A (en) * | 2005-08-30 | 2009-09-16 | 特克斯勒电子实验室公司 | Methods, systems, and computer program products for determining a property of construction material |
| CN101619989A (en) * | 2008-07-04 | 2010-01-06 | 中国铁路通信信号上海工程有限公司 | System and method for acquiring and analyzing remote data of bridge |
| CN201345048Y (en) * | 2008-12-26 | 2009-11-11 | 中国铁路通信信号上海工程有限公司 | Data acquisition and analysis system |
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Application publication date: 20111221 |