33 results about "Earth tide" patented technology

The invention discloses a method for continously observing and determining the vertical distribution of atmospheric water vapor by using superconductive gravity and relates to a method for determining the vertical distribution of the atmospheric water vapor. The method comprehensively uses earth tide theory, observation technology, atmosphere load gravity correction theory and simulates global surface pressure temperature observation data and the like which eliminate other phenomena except that the atmosphere acts on the gravity on the station above 50 kilometers away from the surface of the ground point of an observation station, to obtain ground point gravitation which the atmosphere in an area acts on; and then atmosphere vertical water vapor is inversed. The method is a fire-new method, is added with a new observation means, and can increase the observation time and spatial resolution of the atmosphere vertical water vapor. Combined with the observation of the wind speed and wind direction, the method can be used for observing three-dimensional water vapor distribution and increases the accuracy of weather forecast.

The invention discloses a method for positioning and detecting low-density concealed ore bodies in a gallery gravity total spatial domain. The method includes the steps that firstly, field gallery gravity and gravity gradient observation is conducted, various corrections are conducted on observation data and include the earth tide correction, the null shift correction, the terrain correction, Bouguer correction, latitude correction, gallery correction, gob correction, backfilling zone correction and the like; secondly, concealed ore body positioning detection is conducted according to the gravity anomaly and the gravity gradient anomaly in the X direction, the Y direction and the Z direction, wherein the gravity anomaly and the gravity gradient anomaly are obtained after correction is conducted. The method solves the problems that metal ore bodies are difficult to position in the total spatial domain, and according to other object detection methods, the deep ore bodies are difficult to position and detect accurately due to the influences of electromagnetic interference and anomaly multiple solutions.

The present invention discloses a method of positioning and detecting a high density concealed ore body in a full spatial domain by the tunnel gravity. The method is characterized in that firstly, the field tunnel gravity and the gravity gradient are observed, and various correction operations containing the earth tide correction, the null shift correction, the topographic correction, the Bouguer correction, the latitude correction, the tunnel correction, the mined-out area correction, the back filled region correction and the like are carried out on the observation data, and then the concealed ore body is positioned and detected by the corrected gravity abnormity and the gravity gradient abnormity in the X, Y and Z directions. The method solves the problems that a metal ore body is difficult to position in the full spatial domain, and the other geophysical exploration methods are influenced by the electromagnetic interference and the abnormity multiplicity, so that the deep ore body is difficult to position and detect accurately.

The invention discloses a high-precision broadband gravimeter, and relates to an earthquake precursor early warning and earth tide observation technology. According to the gravimeter, from bottom to top, a chassis unit is connected with a constant temperature unit, the constant temperature unit is internally provided with a supporting unit, and the supporting unit is provided with a capacitive displacement sensor, an elastic unit, a pendulum adjusting unit and a pendulum locking unit; the pendulum adjusting unit and the pendulum locking unit are connected with the elastic unit; the elastic unit is connected with the capacitive displacement sensor; the capacitive displacement sensor is used for measuring the up-and-down position change of a moving plate in the elastic unit; the elastic unitis a precision spring; and the constant temperature unit is a high-precision temperature control device. The constant temperature precision of the gravimeter is 0.0001 DEG C; the capacitive sensor has high enough precision, and the measurement precision is 0.1 nanometer; and the gravimeter adopts a reasonable thermal structure and good in sealing, so that the influence from the temperature and air pressure is small, and a good observation result can be obtained even when the gravimeter works in an observation room without temperature control.

The invention discloses a ground tilt monitoring device .The ground tilt monitoring device comprises a device shell, a suspension frame and a processing circuit board are arranged in the device shell, two capacitive sensors are orthogonally arranged on the suspension frame, each capacitive sensor comprises capacitor stators, capacitor rotors and pendulum bobs, the capacitor stators are arranged on the two sides of the capacitor rotors at equal intervals, the capacitor stators and the capacitor rotors are horizontally arranged on the same horizontal plane, the capacitor stators are arranged on the suspension frame, the pendulum bobs are arranged on the suspension frame in a hanging mode and arranged on the lower portions of the capacitor rotors to be in rigid connection with the capacitor motors, the capacitive sensors are electrically connected with the processing circuit board respectively, and a zero setting mechanism is further arranged on the suspension frame .According to the ground tilt monitoring device, when zero setting is conducted, the two capacitive sensors do not influence each other, the pendulum bobs drive the capacitor rotors to move to change the space between the capacitor rotors and the capacitor stators so as to produce capacitance variable quantity, and the influence of static friction force of pendulum bobs in the prior art is eliminated; the ground tilt monitoring device is mainly used for monitoring earth tides, earthquake precursors and tilting deformation of an earth crust, and the ground tilt monitoring device is simple in structure, good in stability, high in precision and high in output linearity.

The invention belongs to the digital seismic observation field and relates to a borehole strain observation full-frequency band data acquisition device. The data acquisition device is provided with two 4-input data acquisition channels, can simultaneously generate second-sampling and 100-sampling high-precision and wide-dynamic range observation data and 10000Hz-sampling high-sampling rate observation data, and carry out precise synchronization on the observation data through a GPS clock; and the borehole strain observation full-frequency band data acquisition device and a 4-component borehole strain seismograph can be combined together to form an observation system of which the frequency band ranges from 10<-6>Hz to 1000Hz, which can carry out digital observation of earth tide, seismic wave and high-frequency microquake or earth sound. According to the borehole strain observation full-frequency band data acquisition device, the traditional earth tide observation function of a borehole strain instrument is reserved; a seismic wave observation new means which cannot be realized by a pendulum seismograph can be provided; especially a high-frequency microquake observation function or an earth sound observation function is realized; and the cognition of people for seismic waves can be enriched. The borehole strain observation full-frequency band data acquisition device covers all frequency bands in the seismic observation field and has great application significance in deepening the understanding of people for high-frequency microquake or earth sound and the like.

The invention discloses a method for locating and detecting a deep high-density inclined ore body under in a full spatial domain based on tunnel gravity and belongs to the geophysical prospecting technical field. According to the method of the invention, the deep high-density inclined ore body can be located and predicted through using gravity anomalies and X, Y and Z-direction gravity gradient anomalies. The method mainly comprises tunnel gravity and gravity gradient observation and correction of observation data, wherein the correction of the observation data involves solid tide earth tide correction, zero drift correction, terrain correction, Bouguer correction, latitude correction, tunnel correction, goaf correction, backfill area correction and the like, so that gravity anomaly valuesand X, Y and Z-direction gravity gradient anomaly values can be obtained. With the method adopted, difficulties in locating a high-density inclined ore body in a full spatial domain and difficultiesin accurately locating and detecting of a deep high-density inclined ore body of other geophysical prospecting methods which are subjected to electromagnetic interference and have multiplicity of solutions for abnormalities can be eliminated.

The invention relates to a method for monitoring and alarming rock landslide by using a tide generating force and belongs to the field of rock landslide stability evaluation and prevention. The methodmainly comprises the following steps: (1) performing primary reconnaissance on landslide, and allocating displacement monitoring points; (2) confirming a theoretic strain value of earth tide acting on a slope rock mass; (3) confirming a loading and unloading monitoring period of the earth tide to a landslide rock mass; (4) confirming a loading and unloading displacement influence rate of the earth tide to the landslide rock mass; (5) confirming loading and unloading displacement response of slope earth tide; (6) confirming slope loading and unloading displacement response ratio stability criterion rules, and performing stability evaluation. The method has the beneficial effects that on the basis of loading and unloading response ratios and earth tide theories, landslide preparation mechanisms and landslide displacement monitoring data are organically integrated, the tide generating force of the sun and the moon to the earth for periodical change is adopted as loading and unloading means, and novel displacement power coupling prediction forecasting methods are established in sequence.

The invention discloses a small vertical pendulum inclinometer, relates to the geoscience observation technology, and is especially suitable for the observation of oblique solid tides and earthquake precursors. In order to improve the sensitivity and precision of tilt measurement and reduce the size of the instrument, the invention adopts the main structure of a small vertical pendulum and capacitive displacement micrometer. The pendulum system of the present invention is mainly composed of two hanging wires, a pendulum and a pendulum, and the pendulum is also the movable capacitor plate of the capacitive displacement sensor. The micrometer device is mainly composed of an oscillator, an inverter, a preamplifier, a frequency selective amplifier, and a lock-in amplifier. Since the equivalent pendulum length is only 10cm and the micrometric accuracy is as high as 0.0001mm, the performance and price ratio of the instrument is greatly improved, so it has broad application prospects.

The present invention provides a DE (differential evolution) algorithm-based gravity earth tide signal independent component analysis method and belongs to the signal processing field. The method mainly comprises gravity earth tide signal three-dimensional orthogonal decomposition model-based analysis, gravity earth tide signal preprocessing, DE algorithm parameter setting, objective function optimization and gravity earth tide signal independent component analysis. According to the DE (differential evolution) algorithm-based gravity earth tide signal independent component analysis method of the invention, the three-dimensional orthogonal decomposition model of gravity earth tide signals is built; orthogonal decomposition of the harmonic component of the gravity earth tide signals is realized in the aspect of space, so that an extracted harmonic component frequency can reflect spatially independent geophysical information; and the DE algorithm is introduced into a traditional ICA algorithm, so that the defects of low convergence rate and local contraction of the ICA algorithm can be effectively avoided. The DE (differential evolution) algorithm-based gravity earth tide signal independent component analysis method is a novel method which can effectively perform orthogonal analysis on earth tide signals.

The invention relates to a solid tide response removing method based on improved variational mode decomposition. The method comprises the following steps: inputting data collected by a ground instrument and carrying out data preprocessing; calculating the frequency spectrum of the data, comparing the frequency characteristics of the earth tide response, and determining the influence range of the earth tide response on the data in the frequency domain; determining a frequency segmentation point f according to the influence range of the earth tide response on the frequency domain; constraining the estimated center frequency of variational mode decomposition according to the frequency segmentation point f; decomposing the data by adopting a central frequency constrained variational mode decomposition method, finding out optimal components under different central frequency constraint conditions to obtain various modes, and arranging the decomposed modes from small to large according to the central frequency of the modes; and removing the earth tide response mode in each mode. The method solves the problem that it is difficult to effectively remove periodic response generated by earth tide in a frequency domain on the basis of not damaging frequency characteristics of different source signals in observation data in an existing method.

The invention provides an overlying strata hydraulics and rock mechanics monitoring method and system. The method comprises the following steps: water level data and air pressure data are detected through an automatic water level gauge and an air pressure gauge arranged in a hydrological monitoring hole in a mining area range; according to the solid tide effect and the air pressure effect of the well water level, corresponding inversion calculation models are selected under different conditions, and hydrogeological parameters of different coal seam overlying aquifers are calculated; distribution characteristics of three zones (a bending zone, a fault zone and a caving zone) can be visually and comprehensively known by obtaining hydrogeological parameters of coal seam overlying aquifers at different positions, and a new basis is provided for division of the three zones; and by acquiring space and time change characteristics of the hydrogeological parameters, time and space change rules of the hydrogeological parameters of the coal seam overlying aquifers in the coal mining process are monitored. According to the overlying strata hydraulics and rock mechanics monitoring method and system, the real-time influence of the mining process on the overlying strata can be identified.

The presnet invention relates to a high-precision gravireceptor and relates to geoscience observation technigue, in particular, it is suitable for use in solid tide research and observation of preearthquake warning signs. It is composed of machine main body, thermostat, micrometer, and collector. We use vertical hanging elastic system, double layer thermostat and feedback temperature control and three piece type capacitance micrometer. Advantages are: simple structure, high sensitivity and high precision.

The invention relates to a method for removing environmental influence factors of borehole strain data. Reading drill hole strain data sa component, air pressure data and water level data; decomposing the strain data into a trend term, a periodic term and a remainder term by utilizing time series decomposition; by comparing the frequency points of the earth tide, the periodic term is removed as the strain response caused by the earth tide; the remainder term is used as strain data after the earth tide is removed and is influenced by the air pressure and the water level, the remainder term, the water level data and the air pressure data are placed together, multi-channel singular spectrum analysis is carried out, and due to the fact that the air pressure and the water level are in negative correlation with the strain data, a correlation coefficient is used for identifying strain response caused by the water level and the air pressure in the remainder term and removing the strain response. The defects that environmental data are not fully utilized or the calculation process is too complex and too many parameters are introduced when environmental influence factors are removed in the past are overcome.

The invention discloses a two-degree-of-freedom earth crust deformation inclination and rotation observation sensor, and relates to an earthquake omen early warning observation technology. The two-degree-of-freedom earth crust deformation inclination and rotation observation sensor is constructed in such a way: a housing and a pedestal are connected in an up-down mode to form an enclosed integral body, and the lower surface of the pedestal is provided with a first support leg, a second support leg and a third support leg which are arranged in the shape of an isosceles right angled triangle; the inner wall of the housing is provided with a support, the two sides of the support are respectively provided with a first fixed pole plate and a second fixed pole plate in parallel, and the center of the top portion of the support is provided with a suspension fiber fixation adjuster; and the suspension fiber fixation adjuster, a suspension fiber and a movable pole plate are successively connected in an up-down mode, and the movable pole plate is disposed between the first fixed pole plate and the second fixed pole plate and is parallel to isosceles edges of the pedestal. The two-degree-of-freedom earth crust deformation inclination and rotation observation sensor has the following advantages: single-point horizontal amount and a rotation amount can be simultaneously measured, the observation frequency band is wide, the dynamic scope is large, and the linearity is good; and change and high-frequency vibration of an Earth tide can be reflected, and change of an earth crust deformation rotation amount can also be observed.

The invention provides a desk capable of achieving a warm keeping effect on legs and feet. Closing baffles are arranged on the front side and two sides of the lower part of a desk body; a foot rest which is inclined in a manner that the front part is high and the rear part is low and is closely fitted to the closing baffles. Therefore, the legs and the feet of a student cannot be affected by cold air and earth tide under the closing action of the closing baffles and the foot rest in a use process of the desk, and the warm keeping effect is achieved.

The invention provides a totally-enclosed half-tank broadband short-baseline water pipe inclinometer which comprises two tanks, the lower parts of the two tanks are communicated through a water pipe,floating bodies floating on liquid are arranged in the tanks, each tank is of a totally-enclosed structure, the length of the water pipe is 2-3m, and the liquid level of the liquid in each tank is located at the center line of the water pipe; connecting rods are arranged at the tops of the floating bodies and are limited in the horizontal direction through guide mechanisms arranged in the tanks; the water pipe inclinometer is fully sealed and is filled with inert gas, so that the problem that distilled water is easy to evaporate and deteriorate and needs to be supplemented and replaced is solved, and the permanent non-replacement and non-supplementation of a liquid medium can be realized; the length of a base line (water pipe) is shortened, so that the installation cost is greatly reduced,the inherent period of the instrument is shortened, the observation frequency band of the instrument is expanded, the key characteristic parameters of the instrument are improved, and short-period abnormal information is obtained while the instrument clearly records earth tide information.