Underground water-sealed cave depot up-down combined microseism monitoring system and method

Abstract

The invention provides an underground water-sealed cave depot up-down combined micro-earthquake monitoring system and method. The method comprises the following steps: acquiring geological structure data of an underground water-sealed cave depot area; determining an installation scheme of the micro-seismic monitoring equipment based on the geological structure data and installation requirements, wherein the installation requirements comprise underground sensor arrangement requirements and ground sensor arrangement requirements; after the micro-seismic monitoring equipment is installed according to the installation scheme, the micro-seismic monitoring equipment is used for collecting real-time data of the sensor; carrying out vibration event pickup based on real-time data of the sensor; and carrying out positioning and energy calculation based on the picked vibration event to obtain the grade of the vibration event so as to determine the dangerous area of the underground water-sealed cave depot.

Description

Technical Field

[0001] The present invention relates to the technical field of rock underground engineering safety monitoring, and in particular to an upper and lower combined microseismic monitoring system and method for underground water-sealed caverns. Background Art

[0002] Underground water-sealed caverns are facilities that use the self-bearing capacity and water-sealing effect of underground rock mass to store liquids or gases. Underground water-sealed caverns are mostly built tens of meters underground, with natural rock mass as the main structure, using the natural burial conditions of groundwater, and supplemented by artificial water-sealing systems to seal energy or chemicals such as oil and liquefied gas (LPG) in artificially excavated underground super-large caverns. Its storage principle mainly relies on the water-sealing effect, that is, a water curtain of a certain thickness is formed above and around the cavern, and the incompressibility and sealing of water are used to isolate the storage medium from the external environment. With the increasing attention paid by the country to energy security and the continuous improvement of environmental protection requirements, underground water-sealed caverns will be more widely used and developed as a safe, environmentally friendly and economical storage method. In the future, the construction of underground water-sealed caverns will pay more attention to the improvement of technological innovation and intelligent level to meet the storage needs of different fields and different scales. However, the construction and application of underground water-sealed caverns also face some challenges, such as the complexity of geological conditions, the difficulty of construction technology, and the requirements of environmental protection. These challenges need to be overcome and solved through technological innovation and scientific management.

[0003] The underground water-sealed cavern mainly adopts high side wall structure, with large cavern volume and span. During the excavation and operation of the cavern, due to stress release and groundwater, it will cause the arch sinking, peripheral convergence, surface settlement, surface water drop, seepage water and other effects. In order to ensure the safety, health and stability of the underground water-sealed cavern, it must be effectively monitored for safety. Microseismic monitoring technology, as a non-destructive monitoring method, can monitor the micro-fracture of the surrounding rock mass of the cavern in real time, providing important guarantee for the safe operation of the cavern. However, the microseismic monitoring systems currently used all use electrical sensors, which have the problems of short service life, many failures and low monitoring accuracy.

[0004] For example, the Chinese invention patent with the authorization announcement number CN107861157B discloses a method for microseismic monitoring of underground water-sealed caverns during operation. This method sets a velocity sensor in the microseismic monitoring hole to determine the layout plan. This method designs a method for microseismic monitoring of underground water-sealed caverns and uses node-type sensors with limited coverage. In addition, the underground water-sealed caverns are in a horizontal position, and the height difference of the sensors arranged in the vertical direction is small. Therefore, the positioning and energy calculation accuracy of the underground water-sealed caverns by this method is low, and the actual monitoring effect is not ideal. The Chinese invention patent with the authorization announcement number CN118654758B discloses a method for monitoring the stability of underground water-sealed caverns. This method includes a stability monitoring device, a vibration monitoring device, etc. This patent also has the problems of small spatial scale and low monitoring accuracy, and cannot achieve the ideal monitoring effect. Therefore, the prior art lacks a method to improve the accuracy of stability monitoring of underground water-sealed caverns through vibration. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the first purpose of the present invention is to propose a combined microseismic monitoring method for underground water-sealed caverns above and below the well to solve the problem of low stability accuracy of vibration monitoring of underground water-sealed caverns.

[0007] The second object of the present invention is to provide a combined upper and lower microseismic monitoring system for underground water-sealed caverns.

[0008] A third objective of the present invention is to provide an electronic device.

[0009] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a method for joint microseismic monitoring of underground water-sealed caverns, including:

[0010] Obtain geological structure data of underground water-sealed cavern areas;

[0011] Determine an installation plan for the microseismic monitoring equipment based on the geological structure data and installation requirements, wherein the installation requirements include downhole sensor layout requirements and uphole sensor layout requirements;

[0012] After the microseismic monitoring device is installed according to the installation plan, the real-time data of the sensor is collected by using the microseismic monitoring device;

[0013] Picking up vibration events based on the real-time data of the sensor;

[0014] Based on the picked-up vibration events, positioning and energy calculation are performed to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern.

[0015] In the method of the first aspect of the present invention, the microseismic monitoring equipment includes a ground node seismograph device, the ground node seismograph device includes a ground sensor module, and the above-the-hole sensor layout requires that the layout area of ​​the ground sensor module completely covers the plane area of ​​the underground water-sealed cavern.

[0016] In the method of the first aspect of the present invention, the microseismic monitoring equipment includes a downhole node detector device, the downhole node detector device includes a fiber optic detector module, the fiber optic detector module includes a plurality of fiber optic detectors, and the downhole sensor layout requirements include installing a fiber optic detector at each set distance along each water curtain cavern tunnel.

[0017] In the method of the first aspect of the present invention, the microseismic monitoring equipment includes a fiber-optic distributed DAS vibration monitoring device, the fiber-optic distributed DAS vibration monitoring device includes an optical cable sensor module, and the downhole sensor layout requirements include arranging the optical cable sensor module along each water curtain cavern tunnel.

[0018] In the method of the first aspect of the present invention, the STA / LTA algorithm is used to pick up vibration events.

[0019] In the method of the first aspect of the present invention, the positioning and energy calculation based on the picked-up vibration events include: determining the vibration wave velocity model of the geological structure of the underground water-sealed cavern based on the geological structure data; and calculating the positioning of the vibration events using the Geiger method based on the vibration wave velocity model.

[0020] In the method of the first aspect of the present invention, the positioning and energy calculation based on the picked-up vibration event includes: calculating the energy of the picked-up vibration event by using a seismic moment algorithm.

[0021] In the method of the first aspect of the present invention, after the microseismic monitoring equipment is installed, it is necessary to calibrate the microseismic monitoring equipment and use the calibrated microseismic monitoring equipment to collect real-time data from sensors.

[0022] To achieve the above-mentioned purpose, the second aspect of the present invention proposes an underground water-sealed cavern well upper and lower combined microseismic monitoring system, comprising:

[0023] A geological structure data acquisition module is used to acquire geological structure data of underground water-sealed cavern areas;

[0024] An installation scheme determination module is used to determine an installation scheme for microseismic monitoring equipment based on the geological structure data and installation requirements, wherein the installation requirements include downhole sensor layout requirements and uphole sensor layout requirements;

[0025] Microseismic monitoring equipment, used to collect real-time data from sensors after installation is completed according to the installation plan;

[0026] A vibration event picking module, used for picking vibration events based on the real-time data of the sensor;

[0027] The monitoring and analysis module is used to locate and calculate the energy based on the picked-up vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern.

[0028] To achieve the above-mentioned purpose, the third aspect of the present invention proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method proposed in the first aspect of the present invention.

[0029] The present invention provides a method, system and electronic device for joint microseismic monitoring of underground water-sealed caverns and reservoirs above and below the well, by obtaining geological structure data of the underground water-sealed cavern area; determining the installation scheme of the microseismic monitoring equipment based on the geological structure data and installation requirements, wherein the installation requirements include the underground sensor layout requirements and the above-the-well sensor layout requirements; after completing the installation of the microseismic monitoring equipment according to the installation scheme, using the microseismic monitoring equipment to collect real-time sensor data; picking up vibration events based on the real-time sensor data; positioning and energy calculation based on the picked vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern. In this case, after determining the installation scheme of the microseismic monitoring equipment based on the geological structure data and installation requirements, the microseismic monitoring equipment is installed underground and above the well, and then picking up vibration events based on the real-time sensor data; based on the positioning and energy of the picked vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern, a three-dimensional full-range coverage monitoring method is realized, and the stability accuracy of vibration monitoring is improved. The problem of low stability accuracy of underground water-sealed caverns through vibration monitoring is solved.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 A schematic diagram of a process flow of a method for combined upper and lower microseismic monitoring of underground water-sealed caverns provided by an embodiment of the present invention;

[0033] Figure 2A schematic diagram of the plane layout of sensors in an underground water-sealed cavern area provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the vertical arrangement of sensors in an underground water-sealed cavern area provided by an embodiment of the present invention;

[0035] Figure 4 A block diagram of an underground water-sealed cavern well combined microseismic monitoring system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The following describes the combined upper and lower microseismic monitoring method and system for underground water-sealed cavern wells according to an embodiment of the present invention with reference to the accompanying drawings.

[0038] The embodiment of the present invention provides a combined microseismic monitoring method for underground water-sealed caverns above and below the well, so as to solve the problem of low stability accuracy of vibration monitoring of underground water-sealed caverns.

[0039] Figure 1 A schematic flow chart of a method for combined upper and lower microseismic monitoring of underground water-sealed cavern wells provided in an embodiment of the present invention.

[0040] like Figure 1 As shown, the underground water-sealed cavern well upper and lower combined microseismic monitoring method comprises the following steps:

[0041] Step S101, obtaining geological structure data of the underground water-sealed cavern area.

[0042] In step S101, the geological structure data of the underground water-sealed cavern area includes but is not limited to data of regional geological structure, surrounding rock quality, rock permeability, stratum lithology, hydrological conditions, etc. The rock has high strength and stability, large fractures or broken zones, possible hidden fractures or weak interlayers should be avoided, and the recharge conditions, runoff conditions and discharge conditions of groundwater need to be evaluated to ensure the stability of the groundwater level during the construction and operation of the cavern. In addition, the corrosiveness and permeability of groundwater need to be evaluated to avoid potential threats to the cavern structure or potential threat areas, such as landslides, mudslides, etc.

[0043] Step S102, determining an installation plan for the microseismic monitoring equipment based on geological structure data and installation requirements, wherein the installation requirements include downhole sensor layout requirements and uphole sensor layout requirements.

[0044] In step S102, the microseismic monitoring equipment includes a ground node seismograph device arranged on the ground (i.e., on the well). The ground node seismograph device includes a ground sensor module. The ground node seismograph device also includes a collection module, a signal transmission module, and a power supply module.

[0045] In some embodiments, the ground node seismograph device adopts an integrated seismograph, wherein the integrated seismograph includes a seismic sensor module, an acquisition module, a signal transmission module and a power supply module. The seismic sensor module adopts a magnetoelectric short-period seismometer. The acquisition module uses a high-precision 24-bit analog-to-digital conversion system. The signal transmission module adopts an optical fiber Ethernet mode or a wireless mode.

[0046] In some embodiments, the ground node seismograph device is powered by a solar battery, and the sensors in the ground node seismograph device use short-period seismic sensors.

[0047] In step S102, the microseismic monitoring device includes a downhole node detector device arranged in the well. The downhole node detector device includes a fiber optic detector module. The fiber optic detector module includes a plurality of fiber optic detectors. The downhole node detector device also includes a fiber optic detector demodulator module.

[0048] In some embodiments, the fiber optic detector may be an interferometric fiber optic detector.

[0049] In step S102, the microseismic monitoring equipment includes a fiber-optic distributed DAS (acoustic detection system) vibration monitoring device arranged underground. The fiber-optic distributed DAS vibration monitoring device includes an optical cable sensor module, and the optical cable sensor module includes an optical fiber DAS sensor. The fiber-optic distributed DAS vibration monitoring device also includes a DAS demodulator module.

[0050] In step S102, the above-ground sensor layout requirements include that the layout area of ​​the ground sensor modules completely covers the plane area of ​​the underground water-sealed cavern. The underground sensor layout requirements include installing a fiber optic detector at each set distance along each water curtain cavern tunnel. The underground sensor layout requirements also include installing three-component detectors at the end and middle position of each water curtain cavern tunnel, and installing single-component detectors at other positions. The underground sensor layout requirements include arranging optical cable sensor modules along each water curtain cavern tunnel.

[0051] In step S102, the installation scheme of the microseismic monitoring equipment is, for example, that the ground sensor module of the ground node seismograph device in the microseismic monitoring equipment is arranged on the ground to completely cover the plane area of ​​the underground water-sealed cavern. Interference-type fiber optic detectors are used in the underground monitoring positions in sections. Specifically, one interference-type fiber optic detector is installed every 200 to 300 meters along each water curtain cavern tunnel. Three-component detectors are installed at the end and middle position of the tunnel, and single-component detectors are installed at other positions. The optical cable sensor modules are arranged along the water curtain cavern tunnel so that all water-sealed cavern areas are covered by the optical fiber distributed DAS vibration monitoring device. The information of the optical fiber distributed DAS vibration monitoring device and the underground node detector device is transmitted underground through the optical fiber transmission system to the ground and the information of the ground node seismograph device is merged into the computer server information processing system.

[0052] Step S103: After the microseismic monitoring equipment is installed according to the installation plan, the real-time data of the sensor is collected using the microseismic monitoring equipment.

[0053] Figure 2 A schematic diagram of the plane layout of sensors in the underground water-sealed cavern area provided in an embodiment of the present invention. Figure 3 A schematic diagram of the vertical arrangement of sensors in an underground water-sealed cavern area provided by an embodiment of the present invention. Figure 2 The arrow indicates the extension direction of the water curtain tunnel. Figure 3 The direction perpendicular to the paper surface is the extension direction of the water curtain tunnel. In step S103, the microseismic monitoring equipment is installed according to the installation plan. Figure 2 and Figure 3 As shown. Figure 2 and Figure 3 As shown, the underground includes multiple oil storage chambers, and the length of the oil storage chambers is, for example, 900m. Some of the oil storage chambers have water curtain chambers (i.e., underground water-sealed caverns, referred to as caverns) next to them. Fiber optic DAS sensors are arranged in the tunnels along each water curtain cavern underground. Along the extension direction of each water curtain cavern tunnel, a sensor (here refers to an interferometric fiber optic detector) is installed every 200 meters at the top and bottom of each water curtain cavern tunnel. The interferometric fiber optic detectors arranged in each water curtain cavern tunnel share a monitoring substation for information aggregation. Multiple node sensors (i.e., ground sensor modules) are arranged on each ground surface, and the node sensor arrangement area on the ground completely covers the plane area of ​​the underground water-sealed cavern.

[0054] In step S103, after the microseismic monitoring equipment is installed, it is necessary to calibrate the microseismic monitoring equipment and use the calibrated microseismic monitoring equipment to collect real-time data from the sensor. For example, the wave velocity correctness and positioning accuracy of the underground water-sealed cavern well joint microseismic monitoring system can be checked by exciting an active source with a known position to ensure the correctness and availability of the system. The active source can be an electromagnetic controllable source or a heavy stone hammer.

[0055] In step S103, all sensors on the ground and underground in the microseismic monitoring equipment are used to obtain real-time sensor data.

[0056] Step S104: picking up vibration events based on real-time sensor data.

[0057] In step S104, the STA / LTA algorithm is used to pick up vibration events.

[0058] Step S105, positioning and energy calculation are performed based on the picked-up vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern.

[0059] In step S105, positioning and energy calculation are performed based on the picked-up vibration events, including: determining the vibration wave velocity model of the geological structure of the underground water-sealed cavern based on the geological structure data; and calculating the positioning of the vibration event using the Geiger method based on the vibration wave velocity model.

[0060] The steps of Geiger method are as follows:

[0061] 1) Data collection: A network consisting of multiple vibration sensor monitoring points is set up, and these vibration sensor monitoring points are used to record the ground motion signals generated by microseismic events.

[0062] 2) Arrival time measurement: Accurately measure the arrival time of the shock wave recorded by each shock sensor.

[0063] 3) Travel time model: Obtain the travel time model of the shock wave from the earthquake source to each shock sensor (here is the shock wave velocity model). The travel time model is a three-dimensional velocity model.

[0064] 4) Inversion algorithm: Apply nonlinear inversion techniques, such as gradient descent or genetic algorithm, to solve the wave propagation velocity of the shock wave according to the travel time model, and find the optimal source location by minimizing the difference between the observed travel time and the model predicted travel time.

[0065] 5) Location determination: After the inversion process converges, the optimal solution obtained is the geographical location of the earthquake source.

[0066] In step S105, positioning and energy calculation are performed based on the picked-up vibration event, including: calculating the energy of the picked-up vibration event by using a seismic moment algorithm.

[0067] The seismic moment satisfies:

[0068] M0=μ×A×D

[0069] Where M0 is the seismic moment, the unit of which is Newton meter (N·m), μ is the shear modulus (rigidity coefficient) of the fault material, A is the area of ​​fault slip, and D is the average slip (displacement) of the fault.

[0070] Step S105, based on the calculated location and energy of the vibration event within a period of time, the level of the vibration event can be determined, and combined with the warning threshold, the dangerous area of ​​the underground water-sealed cavern can be determined.

[0071] In order to realize the above-mentioned embodiment, the present invention also proposes a combined upper and lower microseismic monitoring system for underground water-sealed caverns.

[0072] Figure 4 A block diagram of an underground water-sealed cavern well combined microseismic monitoring system provided in an embodiment of the present invention.

[0073] like Figure 4 As shown, the underground water-sealed cavern well joint microseismic monitoring system includes a geological structure data acquisition module 11, an installation scheme determination module 12, a microseismic monitoring device 13, a vibration event picking module 14 and a monitoring and analysis module 15, wherein:

[0074] The geological structure data acquisition module 11 is used to acquire the geological structure data of the underground water-sealed cavern area;

[0075] An installation scheme determination module 12 is used to determine an installation scheme for microseismic monitoring equipment based on geological structure data and installation requirements, wherein the installation requirements include downhole sensor arrangement requirements and uphole sensor arrangement requirements;

[0076] Microseismic monitoring equipment 13, used to collect real-time data from sensors after installation is completed according to the installation plan;

[0077] A vibration event picking module 14, used for picking vibration events based on real-time sensor data;

[0078] The monitoring and analysis module 15 is used to locate and calculate the energy of the picked-up vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern.

[0079] Further, in a possible implementation of the embodiment of the present invention, the microseismic monitoring device 13 includes a ground node seismic instrument device, which includes a ground sensor module. The microseismic monitoring device 13 includes a downhole node geophone device, which includes a fiber geophone module, which includes multiple fiber geophones. The microseismic monitoring device 13 includes a fiber-distributed DAS vibration monitoring device, which includes an optical cable sensor module,

[0080] Furthermore, in a possible implementation of the embodiment of the present invention, in the installation scheme determination module 12, the above-the-hole sensor layout requirement includes that the layout area of ​​the ground sensor modules completely covers the plane area of ​​the underground water-sealed cavern.

[0081] Furthermore, in a possible implementation of the embodiment of the present invention, in the installation scheme determination module 12, the underground sensor arrangement requirement includes installing a fiber optic detector at each set distance along each water curtain tunnel.

[0082] Furthermore, in a possible implementation of the embodiment of the present invention, in the installation scheme determination module 12, the underground sensor arrangement requirement includes arranging optical cable sensor modules along each water curtain cavern tunnel.

[0083] Furthermore, in a possible implementation of the embodiment of the present invention, after the microseismic monitoring device is installed, it is necessary to calibrate the microseismic monitoring device and use the calibrated microseismic monitoring device to collect real-time data of the sensor.

[0084] Furthermore, in a possible implementation of the embodiment of the present invention, the vibration event picking module 14 adopts the STA / LTA algorithm to pick up the vibration event.

[0085] Furthermore, in a possible implementation of an embodiment of the present invention, in the monitoring and analysis module 15, positioning and energy calculation are performed based on the picked-up vibration events, including: determining the vibration wave velocity model of the geological structure of the underground water-sealed cavern based on the geological structure data; and calculating the positioning of the vibration events using the Geiger method based on the vibration wave velocity model.

[0086] Furthermore, in a possible implementation of the embodiment of the present invention, in the monitoring and analysis module 15, positioning and energy calculation are performed based on the picked-up vibration events, including: calculating the energy of the picked-up vibration events by using a seismic moment algorithm.

[0087] It should be noted that the aforementioned explanation of the embodiment of the method for joint microseismic monitoring of underground water-sealed cavern wells is also applicable to the joint microseismic monitoring system for underground water-sealed cavern wells of this embodiment, and will not be repeated here.

[0088] In an embodiment of the present invention, geological structure data of the underground water-sealed cavern area is obtained; the installation scheme of the microseismic monitoring equipment is determined based on the geological structure data and installation requirements, wherein the installation requirements include the underground sensor layout requirements and the above-ground sensor layout requirements; after the microseismic monitoring equipment is installed according to the installation scheme, the real-time sensor data is collected by the microseismic monitoring equipment; vibration events are picked up based on the real-time sensor data; positioning and energy calculation are performed based on the picked vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern. In this case, after the installation scheme of the microseismic monitoring equipment is determined based on the geological structure data and installation requirements, the microseismic monitoring equipment is installed underground and above the well, and then vibration events are picked up based on the real-time sensor data; the level of the vibration events is obtained based on the positioning and energy of the picked vibration events to determine the dangerous area of ​​the underground water-sealed cavern, thereby realizing a three-dimensional full-range coverage monitoring method and improving the stability accuracy of vibration monitoring. The problem of low stability accuracy of underground water-sealed caverns through vibration monitoring is solved.

[0089] The method and system of the present invention adopt underground node-type and distributed as well as above-ground node-type sensor arrangements to realize a three-dimensional full-range coverage monitoring method with the highest accuracy; all underground sensors use optical fiber passive sensors, which do not require power supply, and the service life of the sensors is not affected in the humid environment underground. The present invention is innovative and solves the problems of low accuracy of the current microseismic monitoring system of underground water-sealed caverns and easy corrosion of sensors, improves the accuracy of stability monitoring of underground water-sealed caverns through vibration, and is suitable for stability monitoring and evaluation of underground water-sealed caverns.

[0090] In order to implement the above embodiments, the present invention also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method provided by the above embodiments.

[0091] In order to implement the above embodiments, the present invention further proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the methods provided by the above embodiments.

[0092] In order to implement the above embodiments, the present invention further provides a computer program product, including a computer program, which implements the methods provided by the above embodiments when executed by a processor.

[0093] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0096] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0097] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0098] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0099] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0100] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for joint microseismic monitoring of underground water-sealed caverns, characterized in that: include: Obtain geological structure data of underground water-sealed cavern areas; Determine an installation plan for the microseismic monitoring equipment based on the geological structure data and installation requirements, wherein the installation requirements include downhole sensor layout requirements and uphole sensor layout requirements; After the microseismic monitoring device is installed according to the installation plan, the real-time data of the sensor is collected by using the microseismic monitoring device; Picking up vibration events based on the real-time data of the sensor; Based on the picked-up vibration events, positioning and energy calculation are performed to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern.

2. The underground water-sealed cavern well upper and lower combined microseismic monitoring method according to claim 1 is characterized in that: The microseismic monitoring equipment includes a ground node seismograph device, and the ground node seismograph device includes a ground sensor module. The above-the-hole sensor layout requirement includes that the layout area of ​​the ground sensor module completely covers the plane area of ​​the underground water-sealed cavern.

3. The underground water-sealed cavern well upper and lower combined microseismic monitoring method according to claim 1 is characterized in that: The microseismic monitoring equipment includes a downhole node detector device, the downhole node detector device includes a fiber optic detector module, the fiber optic detector module includes a plurality of fiber optic detectors, and the downhole sensor layout requirements include installing a fiber optic detector at each set distance along each water curtain cavern tunnel.

4. The underground water-sealed cavern well upper and lower combined microseismic monitoring method according to claim 1 is characterized in that: The microseismic monitoring equipment includes a fiber-optic distributed DAS vibration monitoring device, and the fiber-optic distributed DAS vibration monitoring device includes an optical cable sensor module. The underground sensor layout requirements include arranging the optical cable sensor module along each water curtain cavern tunnel.

5. The underground water-sealed cavern well combined upper and lower microseismic monitoring method according to claim 1 is characterized in that: The STA / LTA algorithm is used to pick up vibration events.

6. The underground water-sealed cavern well upper and lower combined microseismic monitoring method according to claim 1 is characterized in that: The positioning and energy calculation based on the picked-up vibration event includes: Determine a seismic wave velocity model of the geological structure of the underground water-sealed cavern based on the geological structure data; The location of the vibration event is calculated using the Geiger method based on the vibration wave velocity model.

7. The underground water-sealed cavern well upper and lower combined microseismic monitoring method according to claim 1 is characterized in that: The positioning and energy calculation based on the picked-up vibration event includes: The energy of the picked-up shaking events is calculated by the seismic moment algorithm.

8. The underground water-sealed cavern well combined upper and lower microseismic monitoring method according to claim 1 is characterized in that: After the microseismic monitoring equipment is installed, it is also necessary to calibrate the microseismic monitoring equipment and use the calibrated microseismic monitoring equipment to collect real-time data from sensors.

9. An underground water-sealed cavern well combined microseismic monitoring system, characterized in that: include: A geological structure data acquisition module is used to acquire geological structure data of underground water-sealed cavern areas; An installation scheme determination module is used to determine an installation scheme for microseismic monitoring equipment based on the geological structure data and installation requirements, wherein the installation requirements include downhole sensor layout requirements and uphole sensor layout requirements; Microseismic monitoring equipment, used to collect real-time data from sensors after installation is completed according to the installation plan; A vibration event picking module, used for picking vibration events based on the real-time data of the sensor; The monitoring and analysis module is used to locate and calculate the energy based on the picked-up vibration events to obtain the level of the vibration events and then determine the dangerous area of ​​the underground water-sealed cavern.

10. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 8.

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