Geologic fracture fluid detection system

Abstract

The application discloses a geological fracture fluid detection system, which excites ultrasonic waves through a signal emission module, amplifies a signal source through a signal amplification module to form analog seismic waves, receives echoes through a receiving module, removes disturbing sound waves existing in dry echoes through a denoising module, records the propagation time of the entire process from excitation to reception through a first arrival module, performs beam synthesis on the echoes through a beam synthesis module, caches all information through a caching module, and facilitates actual clear understanding of the state through an imaging module. The application can accurately and clearly obtain the shape of the geological fracture and the state of the liquid in the fracture through data analysis on multiple sampling gates and Doppler imaging, and can further perform pretreatment operation on a mine or other mine tunnel according to the obtained relevant information, so that the occurrence of collapse events is reduced.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and more specifically to a geological fracture fluid detection system. Background Technology

[0002] The study of geological internal structure is of great significance for mine operation, as mine collapses are highly likely during mining. Under such uncontrollable conditions, the lives of miners are endangered, resulting in substantial economic losses. Many factors contribute to mine collapses, with fissures within the geological structure being one of the most important. These fissures reduce the stability of the geological structure, and the presence of flowing water within them further destabilizes the geological structure. Therefore, the study of fissures in geological structures is crucial. However, currently, there are no effective methods to clearly and accurately analyze the morphology of fissures within the geological structure and whether the water source within them is flowing or static. This technological imperfection leads to frequent mine collapse accidents. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a geological fracture fluid detection system. This invention analyzes data from multiple sampling gates and performs Doppler imaging to accurately and clearly determine the morphology of fractures and the state of fluids within them. Based on the obtained information, preprocessing operations can be performed on mines or other mine shafts to reduce the occurrence of collapse events.

[0004] The objective of this invention is achieved through the following technical solution: a geological fracture fluid detection system, comprising a signal transmission module, a signal amplification module, a signal receiving module, a noise reduction module, a first arrival module, a beamforming module, a buffer module, and an imaging module;

[0005] The signal transmission module is used to set a preset area according to multiple sampling gate positions set by the user, and simultaneously excite ultra-high frequency ultrasonic waves of 20-40 for geological exploration to the preset area to be detected, so as to provide initial energy waves for detecting the internal structural features of the geological body. The preset area includes multiple sampling gates set by the user.

[0006] The signal amplification module is used to amplify the ultra-high frequency ultrasonic signal excited by the signal transmitting module in order to simulate seismic waves;

[0007] The signal receiving module is used to receive reflected waves generated when ultrasonic waves propagate through geological bodies;

[0008] The noise reduction module is used to remove interfering sound waves present in the environment and to filter out interfering sound waves doped in the reflected waves.

[0009] The initial arrival module is used to record the time from receiving the excitation signal wave to receiving the first reflected wave, as well as the time of each signal wave received in the signal receiving module, and to calculate the difference between each time.

[0010] A beamforming module is used to perform beamforming processing on the echo and obtain scanning information corresponding to the multiple sampling gates in the preset area;

[0011] The caching module is used to cache all scan line information in the preset area so that the user can select the scan information of the sampling gate at any position from all the cached scan line information.

[0012] The imaging module is used to display the processed and converted signal wave and present it as a waveform diagram.

[0013] In one preferred embodiment, the preset area is a two-dimensional area or a three-dimensional area.

[0014] In one preferred embodiment, the beamforming module includes: an acquisition unit, configured to perform beamforming processing on the echo to acquire all scan line information in the preset area; and an extraction unit, configured to extract scan information corresponding to the multiple sampling gate positions from all scan line information based on multiple sampling gate positions set by the user.

[0015] A method for detecting fluid in geological fractures, the method comprising the following steps:

[0016] Step 1: Collect topographic and geological data of the open-pit area to be explored, including topographic features, geological interface features, and structural data;

[0017] Step 2: Integrate the data from Step 1 to select a region. Set a preset region by multiple sampling gate positions. Simultaneously emit ultrasonic waves into the preset region to be detected. The preset region includes multiple sampling gates set by the user.

[0018] Step 3: Dig a deep well, place the ultrasonic excitation device into the deep well, and perform the initial excitation to check whether each functional module is working properly or whether the circuit connection is correct.

[0019] Step 4: After confirming that the equipment is operating normally, the ultrasonic waves are excited, the signal wave is amplified by the signal amplification module, the interference waves are removed by the noise reduction module, the echo fed back from the preset area is received by the signal receiving module, and the relevant time information is recorded by the initial arrival module.

[0020] Step 5: Perform beamforming processing on the echo to obtain the scanning information corresponding to the multiple sampling gates in the preset area; cache all scanning line information in the preset area so that the user can select the scanning information of any sampling gate from all cached scanning line information; perform Doppler imaging based on the scanning information.

[0021] Based on the relevant data obtained in steps 1-5, and on the basis of the definition of the rank of the high-dimensional tensor, by integrating Tucker decomposition and CP decomposition, and making full use of the nonlocal self-similarity of the seismic tensor, a new definition model of the rank of the seismic data tensor is proposed, and the specific mathematical form is determined as follows:

[0022] minE(X)=rank(L)+λTV(E)stX=L+E,

[0023]

[0024] Where rank(L) represents the tensor rank of the original signal L, and TV(E) is the total variation of the noise component;

[0025] The collected data is substituted into the above formula to calculate the parameters of the internal fractures of the geological body. By analyzing the parameters, the length, width, direction, dip, and dip angle of the fractures are obtained, and the morphology of the fractures is determined.

[0026] Based on the relevant data obtained in steps 1-5, using the formula: Calculated;

[0027] Where f0 is the transmitted wave frequency, f is the received frequency, and v is the speed of sound in the medium. r v is the velocity of the receiver relative to the medium. s It is the speed of the sound source relative to the medium.

[0028] The step of simultaneously emitting ultrasonic waves to the preset area to be detected includes: applying a pulse signal to a transducer used for emitting ultrasonic waves, and controlling the ultrasonic sound field emitted by the transducer to simultaneously cover the preset area to be detected.

[0029] The step of performing beamforming processing on the echo to obtain scanning information corresponding to the plurality of sampling gates in the preset area includes: performing beamforming processing on the echo to obtain all scanning line information in the preset area; and extracting scanning information corresponding to the plurality of sampling gate positions from all scanning line information according to the plurality of sampling gate positions set by the user.

[0030] The beneficial effects of this invention are as follows: This invention transmits ultrasonic waves to a preset area containing a user-selected sampling gate; beamforming is performed on the echoes fed back from the preset area to obtain the scanning information of the sampling gate in the preset area; and based on the high-precision characteristics of UHF seismic signals, coupled models have certain advantages in handling this type of problem, as their evolutionary behavior is a coupling of multiple complex behaviors, exhibiting a certain degree of adaptability and improving the model's processing capabilities; by extracting local and non-local structural detail attribute features in the spatiotemporal domain of UHF seismic data, this study aims to improve the self-similarity of seismic data... By utilizing image block matching technology, an appropriate distance metric is constructed to measure the similarity between seismic data sub-blocks. Seismic data sub-blocks that meet the similarity requirements are combined to form a seismic data structure information tensor. The relevant properties of the similar structure tensor are analyzed, and Doppler imaging is performed to obtain the specific morphology of fractures in geology. By using relevant time difference information and propagation speed, the velocity difference of water flow in fractures is accurately determined. Further calculations are performed to finally determine the state of water flow, flow velocity, flow direction, and other information. Based on the obtained relevant information, preprocessing operations are performed on mines or other mine shafts to reduce the occurrence of collapse events. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a flowchart illustrating the overall system transfer process of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0039] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0040] Furthermore, terms like "approximately" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "approximately equal to" does not simply mean absolute parallelism; because in actual production and operation, it is difficult to achieve absolute "equality," and a certain degree of deviation is generally present. Therefore, in addition to absolute equality, "approximately equal to" also includes the aforementioned situation where a certain degree of deviation exists. Taking this as an example, in other cases, unless otherwise specified, terms like "approximately" and "basically" have similar meanings as described above.

[0041] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] See Figure 1 This invention provides a technical solution: a geological fracture fluid detection system, comprising a signal transmission module, a signal amplification module, a signal receiving module, a noise reduction module, an initial arrival module, a beamforming module, a buffer module, and an imaging module. The signal transmission module is used to set a preset area based on multiple sampling gate positions set by the user, and simultaneously excite ultra-high frequency ultrasonic waves (20-40Hz) used for geological exploration into the preset area to provide initial energy waves for detecting the internal structural features of the geological body. The preset area includes multiple sampling gates set by the user. The signal amplification module amplifies the ultra-high frequency ultrasonic signal excited by the signal transmission module to simulate seismic waves, ensuring more reliable sound waves and further narrowing the frequency range of the sound waves. The signal receiving module is used for... The system receives reflected waves generated when ultrasonic waves propagate through a geological body; the noise reduction module removes interfering sound waves present in the environment and filters out interfering sound waves mixed in with the reflected waves; the first arrival module records the time from receiving the excitation signal wave to the first received reflected wave, as well as the time of each signal wave received by the signal receiving module, and calculates the difference between each time; the beamforming module performs beamforming processing on the echo to obtain the scanning information corresponding to the multiple sampling gates in the preset area; the caching module caches all scan line information in the preset area so that the user can select the scanning information of any sampling gate from all cached scan line information; the imaging module displays the processed and converted signal wave and presents it as a waveform diagram. This invention transmits ultrasonic waves to a preset area containing a user-selected sampling gate; beamforming the echoes from the preset area yields scanning information of the sampling gate within that area. Leveraging the high precision of UHF seismic signals, coupled models offer advantages in handling such problems, as their evolution involves the coupling of multiple complex behaviors, exhibiting a degree of adaptability and enhancing processing capabilities. By extracting local and non-local structural detail attributes from UHF seismic data in the spatiotemporal domain, this study aims to construct an appropriate distance metric to measure the similarity between seismic data sub-blocks using image block matching technology, based on the self-similarity of seismic data. Seismic data sub-blocks meeting similarity requirements are combined to form a seismic data structural information tensor. The related properties of this similar structural tensor are analyzed, and Doppler imaging is performed to obtain the specific morphology of fractures in the geology. By using relevant time difference information and propagation speed, the velocity difference of water flow within the fractures is accurately determined. Further calculations are then performed to ultimately determine the state, velocity, and direction of the water flow. Based on the obtained information, preprocessing operations are performed on mines or other underground structures to reduce the occurrence of collapse events.

[0043] Preferably, all scan line information acquired within the preset region can be cached. For example, all scan line information within the preset region can be stored in a pre-defined data cache. This way, since all scan line information within the preset region includes not only the scan information corresponding to the multiple sampling gate positions selected by the user, but also the scan line information within the area surrounding the multiple sampling gate positions selected by the user, during review after Doppler imaging of the multiple sampling gates selected by the user, based on all scan line information within the preset region stored in the data cache, the user can not only view the data of the selected sampling gate during the inspection, but also arbitrarily change the sampling gate position to view the data of sampling gate positions near the selected sampling gate but not selected during the inspection. Furthermore, during review, the user can also increase / decrease the number of sampling gates based on all scan line information within the preset region stored in the data cache, and correspondingly increase or decrease the number of spectrograms and played Doppler audio signals, making it more flexible. Preferably, the preset region is a two-dimensional region or a three-dimensional region.

[0044] Preferably, the beamforming module includes: an acquisition unit, used to perform beamforming processing on the echo to acquire all scan line information in the preset area; and an extraction unit, used to extract scan information corresponding to the multiple sampling gate positions from all scan line information according to multiple sampling gate positions set by the user.

[0045] In this embodiment, when beamforming the echo, all scan line information in the preset region is obtained, that is, all scan lines within the range of the preset region are calculated. The beamforming result includes all information of the entire preset region. In addition, all information of the entire preset region can also be restored by interpolation.

[0046] When Doppler imaging is required for multiple sampling gates selected by the user, multiple sets of scanning information corresponding to the positions of the multiple sampling gates can be extracted from all scan line information in the preset area after beamforming the echoes, based on the positions of the multiple sampling gates selected by the user. Specifically, the data segments in all information of the preset area corresponding to the sampling gate can be calculated based on the spatial position of the sampling gate selected by the user. Interpolation is generally required to extract the scan line information corresponding to the position of the user-selected sampling gate from all information in the preset area. If the user selects multiple sampling gates, multiple sets of scanning information corresponding to each sampling gate are extracted and generated. The scanning information may include the amplitude, phase information, etc., corresponding to the sampling gate, which are not limited here.

[0047] In this embodiment, when the echo acoustic information is transmitted to the front end of the beamforming module, the noise reduction module can effectively remove the interfering acoustic waves, further improving the accuracy of the overall acoustic information, so that the final analysis data and images obtained are more convincing.

[0048] A method for detecting fluid in geological fractures, the method comprising the following steps:

[0049] Step 1: Collect topographic and geological data of the open-pit area to be explored, including topographic features, geological interface features, and structural data;

[0050] Step 2: Integrate the data from Step 1 to select a region. Set a preset region by multiple sampling gate positions. Simultaneously emit ultrasonic waves into the preset region to be detected. The preset region includes multiple sampling gates set by the user.

[0051] Step 3: Dig a deep well, place the ultrasonic excitation device into the deep well, and perform the initial excitation to check whether each functional module is working properly or whether the circuit connection is correct.

[0052] Step 4: After confirming that the equipment is operating normally, the ultrasonic waves are excited, the signal wave is amplified by the signal amplification module, the interference waves are removed by the noise reduction module, the echo fed back from the preset area is received by the signal receiving module, and the relevant time information is recorded by the initial arrival module.

[0053] Step 5: Perform beamforming processing on the echo to obtain the scanning information corresponding to the multiple sampling gates in the preset area; cache all scanning line information in the preset area so that the user can select the scanning information of any sampling gate from all cached scanning line information; perform Doppler imaging based on the scanning information.

[0054] Based on the relevant data obtained in steps 1-5, and building upon the definition of the rank of a high-dimensional tensor, this paper proposes a new definition model for the rank of a seismic data tensor by integrating Tucker decomposition and CP decomposition, fully utilizing the nonlocal self-similarity of the seismic tensor, and determines its specific mathematical form as follows:

[0055] minE(X)=rank(L)+λTV(E)stX=L+E,

[0056]

[0057] Where rank(L) represents the tensor rank of the original signal L, and TV(E) is the total variation of the noise component;

[0058] The collected data is substituted into the above formula to calculate the parameters of the internal fractures of the geological body. By analyzing the parameters, the length, width, direction, dip, and dip angle of the fractures are obtained, and the morphology of the fractures is determined.

[0059] Based on the relevant data obtained in steps 1-5, using the formula: Calculated;

[0060] Where f0 is the transmitted wave frequency, f is the received frequency, and v is the speed of sound in the medium. r v is the velocity of the receiver relative to the medium. s It is the speed of the sound source relative to the medium.

[0061] Preferably, the step of simultaneously emitting ultrasonic waves to the preset area to be detected includes: applying a pulse signal to a transducer used for emitting ultrasonic waves, and controlling the ultrasonic sound field emitted by the transducer to simultaneously cover the preset area to be detected.

[0062] Preferably, the step of performing beamforming processing on the echo to obtain scanning information corresponding to the plurality of sampling gates in the preset area includes: performing beamforming processing on the echo to obtain all scanning line information in the preset area; and extracting scanning information corresponding to the plurality of sampling gate positions from all scanning line information according to the plurality of sampling gate positions set by the user.

[0063] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A method for detecting fluid in geological fractures, characterized in that: The method includes the following steps: Step 1: Collect topographic and geological data of the open-pit area to be explored, including topographic features, geological interface features, and structural data; Step 2: Integrate the data from Step 1 to select a region. Set a preset region by multiple sampling gate positions. Simultaneously emit ultrasonic waves into the preset region to be detected. The preset region includes multiple sampling gates set by the user. Step 3: Dig a deep well, place the ultrasonic excitation device into the deep well, and perform the initial excitation to check whether each functional module is working properly or whether the circuit connection is correct. Step 4: After confirming that the equipment is operating normally, the ultrasonic waves are excited, the signal wave is amplified by the signal amplification module, the interference waves are removed by the noise reduction module, the echo fed back from the preset area is received by the signal receiving module, and the relevant time information is recorded by the initial arrival module. Step 5: Perform beamforming processing on the echo to obtain the scanning information corresponding to the multiple sampling gates in the preset area; cache all scanning line information in the preset area so that the user can select the scanning information of any sampling gate from all cached scanning line information; perform Doppler imaging based on the scanning information; Based on the relevant data obtained in steps 1-5, and building upon the definition of the rank of a high-dimensional tensor, this paper proposes a new definition model for the rank of a seismic data tensor by integrating Tucker decomposition and CP decomposition, fully utilizing the nonlocal self-similarity of the seismic tensor, and determines its specific mathematical form as follows: in Represents the original signal tensor rank, This represents the total variation of the noise component; The collected data is substituted into the above formula to calculate the parameters of the internal fractures of the geological body. By analyzing the parameters, the length, width, direction, dip, and dip angle of the fractures are obtained, and the morphology of the fractures is determined.

2. The method for detecting fluid in geological fractures according to claim 1, characterized in that: The step of simultaneously emitting ultrasonic waves into the preset area to be detected includes: A pulse signal is applied to a transducer used to emit ultrasonic waves, controlling the ultrasonic sound field emitted by the transducer to simultaneously cover a preset area to be detected.

3. The method for detecting fluid in geological fractures according to claim 1, characterized in that: The step of performing beamforming processing on the echo to obtain scanning information corresponding to the plurality of sampling gates in the preset region includes: Beamforming is performed on the echo to obtain all scan line information in the preset area; scan information corresponding to the multiple sampling gate positions is extracted from all scan line information according to the multiple sampling gate positions set by the user.

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