10 results about "Earth crust" patented technology

The application discloses a method, device and equipment for determining crust shortening amount and a storage medium, and belongs to the technical field of geophysical exploration. The method comprises the following steps: acquiring gravity data and geological data of a detection area comprising a compression structure area and a gravity background area; determining a first gravity anomaly integral amount of the detection area based on the gravity data of the detection area; determining a gravity contrast model corresponding to a specified area based on the geological data of the detection area, and further calculating a second gravity anomaly integral amount of the detection area; and calculating the crust shortening amount of the detection area based on the first gravity anomaly integral amount and the second gravity anomaly integral amount. According to the method, the gravity data is combined with the deformation of the compression structure based on the gravity anomaly of the crust compression structure, so that the crust shortening amount can be obtained simply, quickly, accurately and reliably, and reliable prior information can be provided for compression structure research and geophysical structure modeling.

This invention relates to the field of engineering earthquake and disaster prevention engineering technology, and particularly to a method and system for predicting the probability of fault deformation in engineering fault resistance. The method includes acquiring basic data of the target active fault, including the fault's geometric characteristics, kinematic characteristics, upper magnitude limit, recurrence period, elapsed time, focal depth, and deformation width; inputting the basic data as input parameters into a computational model; calculating the fault length based on the fault's geometric characteristics; and constructing a two-dimensional computational grid for along and across the fault. This invention provides a novel probabilistic prediction method for assessing the permanent displacement of the shallow crust caused by fault displacement during large earthquakes, as well as the intense deformation of the shallow crust near the fault. It can provide sub-meter level data on fault-alternating dislocation and cross-fault deformation at important engineering sites under a certain exceedance probability.

FIELD: mining industry.SUBSTANCE: invention is intended for use in selecting locations for the placement of coal waste dumps during the development of natural energy resource deposits and the disposal of accumulated solid waste from coal mining. The method for selecting locations for coal waste dumps is that in a mining region, using geodynamic zoning, the boundaries of geodynamically active blocks of the earth's crust are identified and the width of the zone of influence of the boundaries of such blocks is determined. Then the coal waste dump site is placed by placing the centre of the site equidistant from the boundaries of the zone of influence of geodynamically active blocks, which represent linear sections of tectonic destruction of the rock massif, and orienting the longitudinal axis of symmetry of the site and its long sides in the east-west direction. After which a coal waste dump is formed. The coal waste dump site is placed near the heat consumer.EFFECT: integrated use of energy resources and improved environmental condition.1 cl, 1 dwg, 1 ex

This application discloses a method for extracting the residual density field of the Earth's crust based on the separation of magnetic mineral density effects, relating to the field of geophysics. The method includes: obtaining the three-dimensional density and magnetization structure of a target region; obtaining the three-dimensional temperature structure of the target region; converting magnetization into magnetite content; and stripping away the density effect of magnetite to obtain the residual density of the Earth's crust. This invention, through quantitative estimation and separation of the magnetic mineral density effect, explicitly removes the contribution of magnetic minerals to the density field from the total density structure, avoiding interference from magnetic mineral enrichment in the interpretation of crustal density anomalies. It estimates the volume fraction of magnetite using magnetic information and combines it with the temperature-corrected density structure to establish a crustal density component decomposition method based on a volume fraction mixing model, achieving physical differentiation between magnetic and non-magnetic components in the density field. It does not rely on specific gravity or magnetic inversion algorithms and has good versatility and scalability.

This invention relates to the field of gas-sensitive materials technology, specifically to an improved location method and system for Pn-Pg cross-arrival time difference, comprising the following steps: acquiring Pg and Pn phase data of a reference earthquake and the earthquake to be measured; determining the array epicentral distance range of Pn and Pg based on crustal thickness and focal depth; calculating the theoretical arrival times of Pg and Pn at different epicentral distances using ray theory based on a velocity model; obtaining the arrival time difference between theoretical and measured data; obtaining arrival time correction parameters based on the reference earthquake; establishing an inversion objective function based on the corrected linearized inversion model; performing causal analysis on the earthquake to be inverted using the optimal solution; and performing error analysis. By using the cross-arrival time data of Pn and Pg phases to determine the earthquake focal location, not only can the calculation efficiency be greatly improved, but the reliability of the inversion results can also be improved.

This invention provides a method for generating a construction scheme for a CM pile composite foundation, comprising: acquiring multi-source data of a target construction area, including target building data, underground rock strata data, historical weather data, crustal activity data, and man-made facility data; generating a first construction scheme based on the target building data and underground rock strata data; revising the first construction scheme based on the historical weather data, crustal activity data, and man-made facility data to obtain a second construction scheme; and iteratively optimizing the second construction scheme based on preset variables, preset constraints, and optimization objectives to obtain a target construction scheme. This method rapidly generates a second construction scheme from multi-source data and iteratively optimizes it to obtain the target construction scheme, resulting in high efficiency in scheme generation and high completeness of the target construction scheme obtained through iterative optimization.

The application discloses a kind of crustal plate moving track model construction method and the prediction method of moving track, the construction method of crustal plate moving track model includes: the dynamic space magnetic field model of the crustal plate to be measured is constructed;Based on dynamic space magnetic field model, the magnetic anomaly change amount of the crustal plate to be measured is obtained;Based on preset geology plate model, the Euler vector of the crustal plate to be measured is obtained;Euler vector and magnetic anomaly change amount are compared, and magnetic anomaly model is constructed according to the comparison result of the crustal plate to be measured;Based on magnetic anomaly model, the moving track model of the crustal plate to be measured is constructed.The construction method is by establishing the moving track model of the crustal plate to be measured, realizes the monitoring of crustal plate movement, so as to effectively predict the information such as earthquake, volcanic eruption of future certain area, can achieve the effect of prevention, and also has important significance to human building facilities construction etc..

In a downhole multi-component symmetrical crustal deformation observation device and its usage method, a conductive spherical pendulum is located at the center of an east, west, south, and north pole plate. The conductive spherical pendulum, the east, west, south, and north pole plates are all connected to a signal conditioning circuit, which in turn is connected to a data acquisition unit. During application, the signal conditioning circuit first emits two signals of different frequencies. When the crust tilts, the conductive spherical pendulum undergoes relative displacement with the east, west, south, and north pole plates, resulting in two linearly superimposed amplitude-modulated signals. The tilt angle of the conductive spherical pendulum in a two-dimensional plane is then obtained based on the amplitude-modulated signals, thus acquiring the crustal deformation data. No cross-coupling effect occurs between the two amplitude-modulated signals, thereby improving the measurement accuracy of the crustal data. The symmetrical structure enhances the stability of long-term observations. Therefore, this design avoids cross-coupling effects and achieves high measurement accuracy of the crustal data.

The application discloses a kind of based on gravity, level and earthquake Crustal stability evaluation method and computer equipment, computer readable storage medium.The method includes step 1, data acquisition and pre-processing;Step 2, evaluation index system construction: the evaluation index system of three dimensions consisting of deformation index, physical index and activity index is constructed;Step 3, index normalization processing;Step 4, physical correction factor calculation;Step 5, combination weight determination: introducing physical correction factor adjusts combination weight;Step 6, comprehensive stability index calculation;Step 7, stability classification: the comprehensive stability index is classified using natural breakpoint method.The evaluation index system of three dimensions from "deformation-physical-activity" is constructed to comprehensively depict Crustal stability;Physical correction factor is introduced to adjust combination weight, realizes the adaptive optimization of weight, and weight distribution is more reasonable and more robust.

To obtain a crustal deformation stereoscopic image processing system that can accurately color-code images based on elevation differences that take into account vertical and horizontal components, even when crustal deformation causes displacement in both vertical and horizontal directions. [Solution] A red stereoscopic map Gbi (image) is generated based on a new DEM of a predetermined area (S12), and a grayscale red stereoscopic map GBgi is generated (S16). On the other hand, the new DEM (post-earthquake) and the pre-earthquake (old) DEM (old DEM) are differentiated (simple difference) to highlight the areas of change (S24). Then, these areas of change are color-coded according to the degree of subsidence and uplift (S26).