Rock burst multi-parameter comprehensive early warning method and system

Abstract

The invention provides a rock burst multi-parameter comprehensive early warning method and system, and relates to the technical field of rock burst monitoring, and the method comprises the steps: dividing a monitoring region into a tunneling operation influence region, a stoping operation influence region and a region which is not influenced by the excavation operation according to the type of the excavation operation of the monitoring region; performing vibration monitoring, stress monitoring and displacement monitoring on each monitoring area to obtain monitoring data; calculating an impact danger index corresponding to each monitoring mode in each monitoring area according to the monitoring data, and carrying out single-parameter early warning; and setting a weight distribution principle of each monitoring mode of each monitoring area based on the activeness of vibration, stress change and displacement of each monitoring area, carrying out weighted fusion on the impact risk index based on the set weight distribution principle, determining the impact risk index and the early warning level of each monitoring area, and realizing multi-parameter comprehensive early warning. According to the method, the effectiveness of multi-parameter combined early warning under the rock burst multi-system monitoring condition can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of rock burst monitoring, and in particular to a multi-parameter comprehensive early warning method and system for rock burst. Background Art

[0002] At present, most rock burst mines are equipped with monitoring equipment for vibration, stress, displacement, etc., and have basically realized the rock burst monitoring and early warning system of "regional monitoring-local early warning-on-site inspection". However, due to the variety of rock burst types and complex mechanisms, the timeliness and efficiency of multi-system real-time joint monitoring and early warning are poor, and it is difficult to meet the requirements of on-site monitoring and early warning. The most pressing problem currently facing the site is how to improve the effectiveness of multi-parameter joint early warning under the conditions of multi-system monitoring of rock burst. Summary of the Invention

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the first purpose of this application is to propose a multi-parameter comprehensive early warning method for rock burst, which can effectively improve the effectiveness of multi-parameter joint early warning under multi-system monitoring conditions of rock burst.

[0005] The second purpose of this application is to propose a multi-parameter comprehensive early warning system for rock burst.

[0006] To achieve the above objectives, the first embodiment of the present application proposes a multi-parameter comprehensive early warning method for rock burst, comprising:

[0007] Based on the type of mining operations in the monitoring area, it is divided into the area affected by tunneling operations, the area affected by mining operations, and the area not affected by mining operations;

[0008] Conduct vibration monitoring, stress monitoring and displacement monitoring for each monitoring area to obtain monitoring data;

[0009] Calculate the impact risk index corresponding to each monitoring method in each monitoring area based on monitoring data, and issue single parameter early warning;

[0010] Based on the activity of vibration, stress change and displacement in each monitoring area, the weight distribution principle of each monitoring method in each monitoring area is set, and the impact hazard index is weighted and fused based on the set weight distribution principle to determine the impact hazard index and warning level of each monitoring area, thereby realizing multi-parameter comprehensive warning.

[0011] To achieve the above objectives, a second embodiment of the present invention provides a multi-parameter comprehensive early warning system for rock burst, comprising:

[0012] The area division module is used to divide the monitoring area into the excavation operation affected area, the mining operation affected area and the area not affected by the mining operation according to the mining operation type;

[0013] The monitoring module is used to perform vibration monitoring, stress monitoring and displacement monitoring on each monitoring area and obtain monitoring data;

[0014] The single parameter early warning module is used to calculate the impact risk index corresponding to each monitoring method in each monitoring area based on the monitoring data, and to issue a single parameter early warning;

[0015] The multi-parameter early warning module is used to set the weight distribution principle of each monitoring area and each monitoring mode based on the activity of vibration, stress change and displacement in each monitoring area, and to perform weighted fusion of the impact hazard index based on the set weight distribution principle to determine the impact hazard index and early warning level of each monitoring area, thereby realizing multi-parameter comprehensive early warning.

[0016] The multi-parameter comprehensive early warning method and system for rock burst in the embodiment of the present application proposes a weight analysis method for the monitoring area and control factors, adopts the values ​​between each danger level of single-factor and multi-factor joint early warning, realizes early warning of "instant catastrophic events" of rock burst, and formulates graded response measures, thereby solving the problems of poor timeliness and low efficiency of real-time joint monitoring and early warning of multiple systems, and difficulty in meeting on-site monitoring and early warning requirements.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic flow chart of a multi-parameter comprehensive early warning method for rock burst provided in Example 1 of the present application;

[0020] Figure 2 Schematic diagram of the calculation process of the impact hazard index of the tunneling operation impact zone according to an embodiment of the present application;

[0021] Figure 3 Schematic diagram of the calculation process of the impact hazard index of the mining operation impact zone in an embodiment of the present application;

[0022] Figure 4 A schematic structural diagram of a multi-parameter comprehensive early warning system for rock burst provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following describes in detail embodiments of the present application, 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 application, and should not be construed as limiting the present application.

[0024] The following describes the multi-parameter comprehensive early warning method and system for rock burst according to an embodiment of the present application with reference to the accompanying drawings.

[0025] Figure 1 This is a flow chart of a multi-parameter comprehensive early warning method for rock burst provided in Example 1 of the present application.

[0026] like Figure 1 As shown, the multi-parameter comprehensive early warning method for rock burst includes the following steps:

[0027] Step 101, dividing the monitored area into an area affected by excavation operations, an area affected by mining operations, and an area not affected by mining operations according to the type of mining operations;

[0028] Specifically, to improve the effectiveness of rock burst hazard monitoring and early warning, rock burst warnings must meet the requirements of zoning monitoring. Zoning monitoring refers to dividing the monitoring area into areas affected by tunneling operations, areas affected by mining operations, and areas not affected by mining operations.

[0029] Step 102: Perform vibration monitoring, stress monitoring, and displacement monitoring on each monitoring area to obtain monitoring data;

[0030] Specifically, vibration monitoring includes microseismic monitoring and ground sound monitoring, stress monitoring includes coal seam stress monitoring, drill cuttings monitoring and electromagnetic radiation monitoring, for the area affected by tunneling operations, displacement monitoring includes support resistance monitoring and roof isolation monitoring, and for the area affected by mining operations, displacement monitoring includes support resistance monitoring.

[0031] According to the special design requirements for the prevention and control of rock burst in the mining working face, the layout of the microseismic monitoring system, the layout of the ground sound monitoring system, the layout of the stress monitoring system, the installation of the roof separation monitoring system, the mine pressure monitoring system, the electromagnetic radiation monitoring, and the drill cuttings monitoring construction were completed, and the monitored microseismic data, ground sound data, stress data, drill cuttings data, roof separation data, electromagnetic radiation data, and support pressure data were input into the computer respectively.

[0032] Step 103: Calculate the impact risk index corresponding to each monitoring mode in each monitoring area based on the monitoring data, and perform a single parameter early warning;

[0033] Specifically, the computer calculates the risk index based on the input data. Figure 2 This is a schematic diagram of the calculation process of the impact hazard index in the area affected by the tunneling operation. Figure 3 This is a schematic diagram of the impact hazard index calculation process for the mining operation impact zone. When the stress value suddenly increases and reaches the warning value, or the energy of the microseismic event reaches the warning value, or the amount of drill cuttings reaches the warning value, it is directly determined as a strong impact hazard level according to the single-parameter special warning process and a warning is issued.

[0034] Step 104, based on the activity of vibration, stress change, and displacement in each monitoring area, set the weight distribution principle for each monitoring mode in each monitoring area, and perform weighted fusion of the impact hazard index based on the set weight distribution principle to determine the impact hazard index and warning level of each monitoring area, thereby realizing multi-parameter comprehensive warning.

[0035] Specifically, when it does not belong to the single-parameter special warning type, the multi-parameter conventional warning method is used. The computer comprehensively analyzes and judges the warning type based on the monitored data. The weight analysis method is used for calculation and judgment in the comprehensive calculation and judgment process. The weight K is calculated according to the influence of the risk index of different monitoring types on the impact risk. i Value allocation, its expression can be used I=K1I1+K2I2+···+K n I n Indicates, where: I1, I2, I n They are the impact risk index corresponding to monitoring and early warning indicators such as microseismic, ground sound, coal seam stress, drilling cuttings method, electrical radiation, support or support resistance, roof separation, etc.; K1, K2, K n is the weight coefficient of the impact of the above monitoring shock risk index on the overall shock risk, K1+K2+···+K n =1, and finally the overall impact risk level of the monitoring area is obtained.

[0036] Specifically, the description of each monitoring method and system weight distribution for the impact hazard area: The types of control factors and influence weights of the impact hazard will change with the change of the monitoring area. In order to improve the accuracy of the early warning, the mine monitoring area is divided into the excavation influence area, the mining influence area and the stable area to realize zone monitoring: 1) The transfer range and concentration degree of the surrounding rock stress of the excavation working face are at a low level, but the high-frequency and medium-high-frequency vibrations generated by the excavation operation are relatively active. Therefore, the impact of tunneling operations is mainly based on vibration monitoring, supplemented by stress and displacement monitoring; 2) The working space of the mining face is relatively large, and the medium and low frequency vibrations generated by the overburden movement are active. At the same time, the stress transfer and concentration of the surrounding rock are at a high level. Therefore, the weight distribution principle of the impact hazard warning index in the area affected by the mining operation is: mainly based on vibration and stress monitoring, supplemented by displacement monitoring; 3) The stable area refers to the large tunnels, up and down hills, permanent rooms and other areas that are not affected by mining activities. Under the action of long-term high stress, the surrounding rock strength is continuously destroyed with the plastic creep of the coal rock mass, causing the stress and strength of the tunnel surrounding rock to reach the impact conditions, which may eventually trigger local creep instability impact of the tunnel or overall impact of the isolated coal body. Therefore, the weight distribution principle of the impact hazard warning index in the stable area is: mainly based on stress and displacement monitoring, supplemented by vibration monitoring.

[0037] In order to implement the above embodiments, the present application also proposes a multi-parameter comprehensive early warning system for rock burst.

[0038] Figure 4 A schematic structural diagram of a multi-parameter comprehensive early warning system for rock burst provided in an embodiment of the present application.

[0039] like Figure 4 As shown in FIG, the multi-parameter comprehensive early warning system for rock burst includes:

[0040] The area division module is used to divide the monitoring area into the excavation operation affected area, the mining operation affected area and the area not affected by the mining operation according to the mining operation type;

[0041] The monitoring module is used to perform vibration monitoring, stress monitoring and displacement monitoring on each monitoring area and obtain monitoring data;

[0042] The single parameter early warning module is used to calculate the impact risk index corresponding to each monitoring method in each monitoring area based on the monitoring data, and to issue a single parameter early warning;

[0043] The multi-parameter early warning module is used to set the weight distribution principle of each monitoring area and each monitoring mode based on the activity of vibration, stress change and displacement in each monitoring area, and to perform weighted fusion of the impact hazard index based on the set weight distribution principle to determine the impact hazard index and early warning level of each monitoring area, thereby realizing multi-parameter comprehensive early warning.

[0044] Furthermore, in the embodiment of the present application, vibration monitoring, stress monitoring and displacement monitoring are performed on each monitoring area respectively, including:

[0045] Vibration monitoring includes microseismic monitoring and ground sound monitoring;

[0046] Stress monitoring includes coal seam stress monitoring, drill cuttings monitoring and electromagnetic radiation monitoring;

[0047] Displacement monitoring in the area affected by tunneling operations includes support resistance monitoring and roof isolation monitoring, and additional displacement monitoring in the area affected by mining operations includes support resistance monitoring.

[0048] Specifically, in an embodiment of the present application, microseismic monitoring includes: recording the frequency and number of microseismic events within a preset time; tunneling ground sound monitoring includes: recording the ground sound frequency and energy; coal seam stress monitoring includes: selecting stress measuring points, and recording the stress value, growth rate value, and increase value of the stress measuring points; drill cuttings method monitoring includes: recording whether there is a dynamic phenomenon when drilling cuttings and whether the amount of drill dust exceeds the standard; support resistance monitoring includes: recording the anchor rod and anchor cable support resistance, change amount and relationship with the tunneling head; roof isolation monitoring includes: recording the change amount, change speed and relationship with the tunneling head of the roof isolation layer; support resistance monitoring includes: judging whether it is in the pressure stage based on the support resistance.

[0049] Furthermore, in the embodiment of the present application, the impact risk index corresponding to each monitoring mode in each monitoring area is calculated based on the monitoring data, including:

[0050] Based on the acquired monitoring data, the impact hazard index of microseismic monitoring, geoacoustic monitoring, coal seam stress monitoring, drill cuttings monitoring, electromagnetic radiation monitoring, support resistance monitoring, roof isolation monitoring and support resistance monitoring is calculated respectively.

[0051] Specifically, in the embodiment of the present application, based on the activity of vibration, stress change, and displacement in each monitoring area, a weight distribution principle for each monitoring area is set, including:

[0052] For each monitoring area, weights are assigned according to the activity of vibration, stress change and displacement in the area, so that the monitoring data with high activity have corresponding weights. Among them, the activity of vibration in the area affected by tunneling operations is the highest, the activity of vibration and stress change in the area affected by mining operations is the highest, and the activity of stress change and displacement in the area not affected by mining operations is the highest.

[0053] It should be noted that the above explanation of the embodiment of the multi-parameter comprehensive early warning method for rock burst is also applicable to the multi-parameter comprehensive early warning system for rock burst of this embodiment, and will not be repeated here.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0056] 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 application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0057] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and a portable compact disc read-only memory (CDROM). Furthermore, 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 it in another suitable manner if necessary, and then storing it in a computer memory.

[0058] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0059] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0060] In addition, the functional units in the various embodiments of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into a 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.

[0061] 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 application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A multi-parameter comprehensive early warning method for rock burst, characterized in that: include: Based on the type of mining operations in the monitoring area, it is divided into the area affected by tunneling operations, the area affected by mining operations, and the area not affected by mining operations; Conduct vibration monitoring, stress monitoring and displacement monitoring for each monitoring area to obtain monitoring data; Calculate the impact risk index corresponding to each monitoring method in each monitoring area based on monitoring data, and issue single parameter early warning; Based on the activity of vibration, stress change and displacement in each monitoring area, the weight distribution principle of each monitoring method in each monitoring area is set, and the impact hazard index is weighted and fused based on the set weight distribution principle to determine the impact hazard index and warning level of each monitoring area, thereby realizing multi-parameter comprehensive warning.

2. The method according to claim 1, wherein The vibration monitoring, stress monitoring and displacement monitoring are performed on each monitoring area respectively, including: The vibration monitoring includes microseismic monitoring and ground sound monitoring; The stress monitoring includes coal seam stress monitoring, drill cuttings monitoring and electromagnetic radiation monitoring; The displacement monitoring of the area affected by the tunneling operation includes support resistance monitoring and roof isolation monitoring, and the additional displacement monitoring of the area affected by the mining operation includes support resistance monitoring.

3. The method according to claim 2, wherein The microseismic monitoring includes: recording the frequency and number of microseismic events within a preset time; the tunneling ground sound monitoring includes: recording the ground sound frequency and energy; the coal seam stress monitoring includes: selecting stress measuring points and recording the stress value, growth rate value and increase value of the stress measuring points; the drill cuttings method monitoring includes: recording whether there is a dynamic phenomenon when drilling cuttings and whether the drill dust volume exceeds the standard; the support resistance monitoring includes: recording the anchor rod and anchor cable support resistance, change amount and relationship with the tunneling head; the roof isolation monitoring includes: recording the change amount, change speed and relationship with the tunneling head of the roof isolation layer; the support resistance monitoring includes: judging whether it is in the pressure stage based on the support resistance.

4. The method according to claim 2, wherein The calculation of the impact risk index corresponding to each monitoring mode in each monitoring area according to the monitoring data includes: Based on the acquired monitoring data, the impact hazard index of microseismic monitoring, geoacoustic monitoring, coal seam stress monitoring, drill cuttings monitoring, electromagnetic radiation monitoring, support resistance monitoring, roof isolation monitoring and support resistance monitoring is calculated respectively.

5. The method according to claim 1, wherein The weight distribution principle for each monitoring area is set based on the activity of vibration, stress change, and displacement in each monitoring area, including: For each monitoring area, weights are assigned according to the activity of vibration, stress change and displacement in the area, so that the monitoring data with high activity has a high weight. Among them, the activity of vibration in the area affected by the tunneling operation is the highest, the activity of vibration and stress change in the area affected by the mining operation is the highest, and the activity of stress change and displacement in the area not affected by the mining operation is the highest.

6. A multi-parameter comprehensive early warning system for rock burst, characterized by: include: The area division module is used to divide the monitoring area into the excavation operation affected area, the mining operation affected area and the area not affected by the mining operation according to the mining operation type; The monitoring module is used to perform vibration monitoring, stress monitoring and displacement monitoring on each monitoring area and obtain monitoring data; The single parameter early warning module is used to calculate the impact risk index corresponding to each monitoring method in each monitoring area based on the monitoring data, and to issue a single parameter early warning; The multi-parameter early warning module is used to set the weight distribution principle of each monitoring area and each monitoring mode based on the activity of vibration, stress change and displacement in each monitoring area, and to perform weighted fusion of the impact hazard index based on the set weight distribution principle to determine the impact hazard index and early warning level of each monitoring area, thereby realizing multi-parameter comprehensive early warning.

7. The system according to claim 6, wherein: The vibration monitoring, stress monitoring and displacement monitoring are performed on each monitoring area respectively, including: The vibration monitoring includes microseismic monitoring and ground sound monitoring; The stress monitoring includes coal seam stress monitoring, drill cuttings monitoring and electromagnetic radiation monitoring; The displacement monitoring of the area affected by the tunneling operation includes support resistance monitoring and roof isolation monitoring, and the additional displacement monitoring of the area affected by the mining operation includes support resistance monitoring.

8. The system according to claim 7, wherein: The microseismic monitoring includes: recording the frequency and number of microseismic events within a preset time; the tunneling ground sound monitoring includes: recording the ground sound frequency and energy; the coal seam stress monitoring includes: selecting stress measuring points and recording the stress value, growth rate value and increase value of the stress measuring points; the drill cuttings method monitoring includes: recording whether there is a dynamic phenomenon when drilling cuttings and whether the drill dust volume exceeds the standard; the support resistance monitoring includes: recording the anchor rod and anchor cable support resistance, change amount and relationship with the tunneling head; the roof isolation monitoring includes: recording the change amount, change speed and relationship with the tunneling head of the roof isolation layer; the support resistance monitoring includes: judging whether it is in the pressure stage based on the support resistance.

9. The system according to claim 7, wherein: The calculation of the impact risk index corresponding to each monitoring mode in each monitoring area according to the monitoring data includes: Based on the acquired monitoring data, the impact hazard index of microseismic monitoring, geoacoustic monitoring, coal seam stress monitoring, drill cuttings monitoring, electromagnetic radiation monitoring, support resistance monitoring, roof isolation monitoring and support resistance monitoring is calculated respectively.

10. The system according to claim 6, wherein: The weight distribution principle for each monitoring area is set based on the activity of vibration, stress change, and displacement in each monitoring area, including: For each monitoring area, weights are assigned according to the activity of vibration, stress change and displacement in the area, so that the monitoring data with high activity has a high weight. Among them, the activity of vibration in the area affected by the tunneling operation is the highest, the activity of vibration and stress change in the area affected by the mining operation is the highest, and the activity of stress change and displacement in the area not affected by the mining operation is the highest.

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