Multi-parameter comprehensive monitoring system and early warning method for multi-source water disaster mine

Abstract

The application discloses a kind of multi-source water disaster mine's multi-parameter comprehensive monitoring system and its early warning method, belong to coal mine water disaster monitoring and early warning technical field, the multi-source water disaster mine's multi-parameter comprehensive monitoring system includes the hydrological dynamic monitoring system established for water source element, the microseismic monitoring system established for water channel element, and the electrical method monitoring system established for water filling intensity element.The multi-source water disaster mine's multi-parameter comprehensive monitoring system and its early warning method of the application have the advantages that: the hardware monitoring system architecture design has globality and pertinence;The application establishes the precise early warning algorithm system of multi-source index, improves the early warning accuracy;The application is widely used, monitoring is comprehensive, the fine degree of early warning result is high, including regional classification, also controls the size accuracy of potential water inrush position and the progress of potential water inrush time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine water disaster monitoring and early warning, in particular to a multi-source water disaster mine multi-parameter comprehensive monitoring system and its early warning method. BACKGROUND

[0002] Water disaster is one of the main hazards affecting the safety production of coal mines. According to the type of water source, the water disaster threat faced by the mine can be divided into ground water disaster, roof water disaster, floor water disaster and goaf water disaster, etc. With the increase of mining depth and mining range of the mine, most mines change from single water source threat to simultaneous threat of multiple water sources. Therefore, the construction of a monitoring and early warning system only for a certain water source threat has limitations in comprehensively sensing the water inrush danger of the mine. As the three elements of mine water inrush, the water filling source, the water filling channel and the water filling intensity have unique parameter characteristics in terms of water inrush precursor information, therefore, the customization of individualized indexes based on different parameters and the establishment of a multi-parameter comprehensive early warning system can improve the accuracy of water disaster early warning, which is the future development direction and trend.

[0003] In recent years, many scholars have conducted systematic research on mine water disaster monitoring and early warning. Wu Qiang, Liu Chunsheng, etc. invented a "Mine Roof and Floor Water Inrush Monitoring and Forecasting System and Method" (CN103529488B). The device and method invented by them can significantly improve the accuracy and real-time performance of the monitoring results of coal mine roof and floor water disaster by monitoring the necessary conditions (microseismic) and necessary conditions (change of apparent resistivity and polarization rate) of water inrush in the mine. However, the system has deficiencies in the breadth and depth of water disaster index fusion, such as the selection of only dynamic indicators such as vibration field and electric field, without static indicators such as drilling and geophysical exploration.

[0004] Jin Dewu, Zhao Chunhu, etc. invented a "Coal Mining Face Floor Water Inrush Comprehensive Monitoring and Early Warning System and Method" (CN110552741B), which realized real-time monitoring and grading early warning of floor water inrush during the recovery process of the recovery face. Sun Jian, Zhao Guangming invented a "Pressure-bearing Fault Activation Water Inrush Multi-field Information Cooperative Monitoring and Pre-impending Prediction Method and Monitoring System" (CN108412547B), which determined the early warning threshold and identification criteria of the precursor information by collecting the initial value and change amplitude of the fault activation water inrush precursor information such as stress, displacement, seepage pressure, temperature, microseismic and apparent resistivity of the fault surrounding rock during mining, to realize real-time and dynamic monitoring and early warning of pressure-bearing fault activation water inrush. However, the application scope of the two patents has certain limitations, the former is mainly for mines threatened by floor water inrush, and the latter is applicable to areas containing faults, therefore, there is still a deficiency in terms of the comprehensiveness of monitoring.

[0005] Based on the above prior art, it is urgent to develop a set of comprehensive monitoring and early warning system suitable for multi-source water hazard threat, high early warning accuracy, including the overall architecture and layout of the hardware system matched with the characteristics of mine water disaster threat, the automatic software system platform and the early warning algorithm. SUMMARY

[0006] Therefore, the present application provides a multi-source water disaster mine multi-parameter comprehensive monitoring system and its early warning method, which can be applied to mines threatened by multi-source water disasters and has high early warning accuracy.

[0007] To solve the above technical problems, the present application provides the following technical solutions:

[0008] On the one hand, a multi-source water disaster mine multi-parameter comprehensive monitoring system is provided, which includes a hydrodynamic monitoring system established for water source elements, a microseismic monitoring system established for water channel elements, and an electrical method monitoring system established for water filling intensity elements, wherein:

[0009] The hydrodynamic monitoring system includes at least one of a meteorological observation system, an aquifer hydrological hole observation system, an aquifer drainage hole observation system, an old water observation system, an underground drainage network monitoring system, a main drainage monitoring system, and a water quality monitoring system;

[0010] The microseismic monitoring system includes at least one of a fixed network in the coal seam, a mobile network in the coal seam, a fixed network combined with the coal seam and the roof, a mobile network combined with the coal seam and the roof, a fixed network combined with the coal seam and the floor, a mobile network combined with the coal seam and the floor, a fixed network combined with the coal seam, the roof and the floor, and a mobile network combined with the coal seam, the roof and the floor, according to different network layout forms;

[0011] The electrical method monitoring system includes at least one of a roadway roof layout measuring line type, a roadway floor layout measuring line type, a coal seam layout measuring line type in the hole, a roof layout measuring line type in the hole, a floor layout measuring line type in the hole, and a hole-lane combined layout measuring line type, according to different monitored areas.

[0012] On the other hand, an early warning method for the above multi-source water disaster mine multi-parameter comprehensive monitoring system is provided, which includes a water source dynamic early warning method, and the water source dynamic early warning method includes:

[0013] Step 101: Extract all water source dynamic monitoring indicators;

[0014] Step 102: Set a reference value for each monitoring indicator;

[0015] Step 103: Set an absolute threshold value according to the reference value, which is divided into high and low, and when the monitoring value exceeds the high absolute threshold value or is lower than the low absolute threshold value, the indicator is in a secondary early warning state;

[0016] Step 104: setting a mutation threshold value according to the reference value, when the absolute value of the index change amount within a certain time exceeds the mutation threshold value, the index is in a secondary early warning state;

[0017] Step 105: when the index meets the absolute threshold value early warning and the mutation threshold value early warning at the same time, the index is in a primary early warning state.

[0018] In still another aspect, the early warning method of the multi-parameter comprehensive monitoring system of the multi-source water inrush mine is provided, and the early warning method includes a dynamic early warning method of the water inrush amount in the mine roadway space, and the dynamic early warning method of the water inrush amount in the mine roadway space includes:

[0019] Step 201: dividing the monitoring index into a key area water inrush amount index and a mine water inrush amount index;

[0020] Step 202: setting a reference value for the above monitoring index;

[0021] Step 203: setting an absolute threshold value according to the reference value, when the monitoring value exceeds the absolute threshold value, the index is in a secondary early warning state;

[0022] Step 204: setting a mutation threshold value according to the reference value, when the absolute value of the index change amount within a certain time exceeds the mutation threshold value, the index is in a secondary early warning state;

[0023] Step 205: when the index meets the absolute threshold value early warning and the mutation threshold value early warning at the same time, the index is in a primary early warning state.

[0024] In still another aspect, the early warning method of the multi-parameter comprehensive monitoring system of the multi-source water inrush mine is provided, and the early warning method includes a water inrush channel early warning method in the aquiclude, and the water inrush channel early warning method in the aquiclude includes:

[0025] Step 301: dividing the aquiclude into layers, defining a monitoring unit, determining a monitoring grid size and range;

[0026] Step 302: respectively formulating a near-end / core / far-end aquiclude layer grid energy release rate threshold value Q WZ and Q LX , the threshold value Q WZ represents a dividing point between the complete state and the damaged state of the grid, and the threshold value Q LX represents a dividing point between the damaged state and the connected state of the grid;

[0027] Step 303: according to the microseismic monitoring result, calculating all near-end aquiclude layer grid energy release rate Q E1 , all core aquiclude layer grid energy release Q E2 , and all far-end aquiclude layer grid energy release rate Q E3 once every preset time interval;

[0028] Step 304: According to the results of step 303 and the set threshold value, the state of all remote water-resisting layered grids is calculated;

[0029] Step 305: According to the calculated state of the remote water-resisting layered grid, a pre-warning judgment is made;

[0030] Step 306: According to the pre-warning results and the actual measurement results, the threshold value of the state division of each water-resisting layered grid is corrected.

[0031] In another aspect, the pre-warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine is provided, and the pre-warning method includes a water filling process pre-warning method in the water-resisting layer, and the water filling process pre-warning method in the water-resisting layer includes:

[0032] Step 401: Water-resisting layered division, definition of a monitoring unit, determination of a monitoring grid size and range;

[0033] Step 402: Actual measurement of the reference apparent resistivity of each grid of each water-resisting layer;

[0034] Step 403: Formulation of the apparent resistivity downward change rate threshold value Q w and Q c of the near-end / core / remote water-resisting layered grid respectively, the threshold value Q w represents the dividing point between the un-water-filled state and the trend water-filled state of the grid, and the threshold value Q c represents the dividing point between the trend water-filled state and the water-filled state of the grid;

[0035] Step 404: According to the resistivity monitoring results, the apparent resistivity downward change rate Q ρ1 of all near-end water-resisting layered grids, the apparent resistivity downward change rate Q ρ2 of all core water-resisting layered grids, and the apparent resistivity downward change rate Q ρ3 of all remote water-resisting layered grids are calculated, and the calculation frequency is consistent with the monitoring frequency of the electrical method monitoring system;

[0036] Step 405: According to the results of step 404 and the set threshold value, the state of all remote water-resisting layered grids is calculated;

[0037] Step 406: According to the calculated state of the remote water-resisting layered grid, a pre-warning judgment is made;

[0038] Step 407: According to the actual observation results, the threshold value of the state division of each water-resisting layered grid is corrected.

[0039] The multi-source water disaster mine multi-parameter comprehensive monitoring system and the early warning method thereof have the following advantages: (1) the hardware monitoring system architecture design has both globality and pertinence; in terms of globality, a unified early warning index system is established, the monitoring and early warning system is unified and advanced, and can cover all mining areas threatened by water disasters; in terms of pertinence, a perfect source monitoring hardware system is built according to the water disaster characteristics of the mining area; (2) the application establishes a multi-source index accurate early warning algorithm system, and improves the early warning accuracy; (3) the application has wide application range, comprehensive monitoring, high precision of early warning result presentation, and includes regional classification, size accuracy of potential water inrush position and process control of potential water inrush time. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0041] Figure 1 The flowchart of the water inrush channel early warning method in the aquiclude in the present application is shown in the figure;

[0042] Figure 2 The flowchart of the water inrush channel early warning method in the aquiclude in the present application is shown in the figure;

[0043] Figure 3 The flowchart of the water inrush channel early warning method in the aquiclude in the present application is shown in the figure;

[0044] Figure 4 The aquiclude layering diagram in the specific embodiment of the present application is shown in the figure;

[0045] Figure 5 The monitoring unit diagram in the specific embodiment of the present application is shown in the figure;

[0046] Figure 6 The remote aquiclude layering grid state diagram in the aquiclude water inrush channel monitoring in the specific embodiment of the present application is shown in the figure;

[0047] Figure 7 The core aquiclude layering grid state diagram in the aquiclude water inrush channel monitoring in the specific embodiment of the present application is shown in the figure;

[0048] Figure 8 The near-end aquiclude layering grid state diagram in the aquiclude water inrush channel monitoring in the specific embodiment of the present application is shown in the figure;

[0049] Figure 9A water inrush channel prewarning result schematic diagram in water inrush channel monitoring in the aquifuge in the specific embodiment of the present application;

[0050] Figure 10 A remote aquifuge layer grid state schematic diagram in water filling process monitoring in the aquifuge in the specific embodiment of the present application;

[0051] Figure 11 A core aquifuge layer grid state schematic diagram in water filling process monitoring in the aquifuge in the specific embodiment of the present application;

[0052] Figure 12 A water filling process prewarning result schematic diagram in water filling process monitoring in the aquifuge in the specific embodiment of the present application. DETAILED DESCRIPTION

[0053] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0054] It should be clear that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0055] As mentioned before, it is urgently needed to develop a comprehensive monitoring and prewarning system suitable for multiple water source threats and high prewarning accuracy, including the overall architecture and layout of the hardware system matched with the characteristics of mine water disaster threats, the automatic software system platform and the prewarning algorithm, etc. The key problems to be solved for completing the above-mentioned research and development are: ① the hardware monitoring system architecture design has both globality and pertinence: in terms of globality, the monitoring and prewarning system should have uniformity (for the establishment of a unified prewarning index system) and advanced nature, and should cover all mining areas threatened by water disasters in the mine; in terms of pertinence, a perfect source-specific monitoring hardware system should be built according to the water disaster characteristics of the mining area, for example, for a working face threatened by floor confined water, a source-specific monitoring hardware system combining hydrological dynamic monitoring, microseismic monitoring, electrical method monitoring, etc. should be established for the water source, water inrush channel and water filling intensity; ② a precise prewarning algorithm system highly integrated with multiple source indexes should be established, each monitoring system has different monitoring parameters when source-specific monitoring is performed, each parameter has different indexes, and the use of single-index calculation to represent the prewarning result lacks accuracy, how to improve the prewarning accuracy by designing a prewarning algorithm integrated with multiple source indexes; ③ the current water disaster prewarning system lacks in the accuracy of prewarning result presentation, mainly in the form of regional classification, but there are still some defects in the size accuracy control of potential water inrush position and the process control of potential water inrush time.

[0056] The purpose of this invention is to provide a multi-parameter integrated monitoring system and source-specific early warning method applicable to mines threatened by multiple water hazards, including hardware system solutions and early warning algorithm solutions that match the characteristics of mine water hazards.

[0057] The essence of mine water inrush is that water source breaks through the aquitard and enters the mining space. Therefore, the comprehensive early warning algorithm to be established can be composed of the following sub-module early warning algorithms, namely, early warning algorithm for dynamic changes in water source, early warning algorithm for dynamic changes in water inflow in the mine tunnel space, early warning algorithm for the location and extent of water inrush channel development in the aquitard, and early warning algorithm for the water filling process in the aquitard.

[0058] On the one hand, this invention provides a multi-parameter integrated monitoring system (i.e., a hardware system solution) for mines with multiple water sources (threats), including a hydrological dynamic monitoring system for water source elements, a microseismic monitoring system for water conduit (also known as water filling / inrush channel) elements, and an electrical resistivity tomography monitoring system for water filling intensity elements, wherein:

[0059] The hydrological dynamic monitoring system includes at least one of the following: meteorological observation system, aquifer hydrological well observation system, aquifer discharge well observation system, old working water observation system, downhole drainage network monitoring system, main drainage monitoring system, and water quality monitoring system.

[0060] The microseismic monitoring system, according to different network deployment forms, includes at least one of the following: a fixed network for the coal seam, a mobile network for the coal seam, a fixed network combining the coal seam and roof, a mobile network combining the coal seam and roof, a fixed network combining the coal seam and floor, a mobile network combining the coal seam and floor, a fixed network combining the coal seam, roof, and floor, and a mobile network combining the coal seam, roof, and floor.

[0061] The electrical resistivity monitoring system includes at least one of the following, depending on the monitored area: roadway roof layout, roadway floor layout, borehole-coal seam layout, borehole roof layout, borehole floor layout, and borehole-roadway combined layout.

[0062] Preferably, in the hydrological dynamic monitoring system:

[0063] The meteorological observation system is installed at surface water bodies and ground meteorological stations, and the monitoring indicators include atmospheric precipitation, surface water level, and surface water temperature.

[0064] The aquifer hydrological well observation system is installed at both the surface and underground, and the monitoring indicators include water level and water temperature.

[0065] The monitoring indicators of the aquifer discharge hole observation system include water pressure, water temperature, instantaneous flow rate, and cumulative flow rate;

[0066] The installation position of the goaf water observation system includes a sealing wall and a water outlet hole, and the monitoring indexes include sealing wall pressure, water temperature, instantaneous flow and cumulative flow.

[0067] The installation position of the underground drainage network monitoring system includes a drainage pipe network and an open channel network node, and the monitoring indexes include instantaneous flow and cumulative flow.

[0068] The installation position of the main drainage monitoring system includes a main pump house and a mining / pit area pump house, and the monitoring indexes include water sump water level, water pump state, instantaneous drainage volume and cumulative drainage volume.

[0069] The installation position of the water quality monitoring system includes a water gushing / drainage point with water quality monitoring demand, and the monitoring indexes include turbidity, conductivity, PH value and main ion concentration.

[0070] Preferably, the installation position of the microseismic monitoring system includes each mining working face and each tunneling working face, and the monitoring indexes include microseismic event frequency, microseismic event energy, microseismic event position and microseismic event time.

[0071] Preferably, the installation position of the electrical method monitoring system includes each mining working face and each tunneling working face, and the monitoring indexes include coal and rock mass resistivity and polarization rate at different positions.

[0072] To facilitate the implementation of the above hardware system solution, the present application can be divided into the following three steps:

[0073] 1. Establish a unified monitoring system configuration library, according to existing monitoring technologies, and establish a monitoring system for corresponding factors based on the three elements of water inrush, i.e., establish a hydrodynamic monitoring system for water source elements, a microseismic monitoring system for water channel elements, and an electrical method monitoring system for water filling strength, wherein:

[0074] The hydrodynamic monitoring system library includes a surface water body weather observation system (located at a surface water body and a weather station, and monitoring indexes include atmospheric precipitation, surface water body water level, water temperature, etc.), a water-bearing layer hydrological hole observation system (located at the surface and underground, and monitoring indexes include water level, water temperature, etc.), a water-bearing layer water outlet hole observation system (monitoring indexes include water pressure, water temperature, instantaneous flow, cumulative flow, etc.), a goaf water observation system (located at a sealing wall and a water outlet hole, and monitoring indexes include water pressure, water temperature, instantaneous flow, cumulative flow, etc.), a drainage network node observation system (located at a drainage pipe network and an open channel network node, and monitoring indexes include water temperature, instantaneous flow, cumulative flow, etc.), a main drainage monitoring system (located at a main pump house and a mining / pit area pump house, and monitoring indexes include water sump water level, water pump state, instantaneous drainage volume, cumulative drainage volume, etc.), and a water quality monitoring system (located at a water gushing / drainage point with water quality monitoring demand, and monitoring indexes include turbidity, conductivity, PH value, main ion concentration, etc.).

[0075] Microseismic monitoring system library: network layout mode (can be divided into fixed network in the coal seam, mobile network in the coal seam, fixed network of coal seam-roof combination, mobile network of coal seam-roof combination, fixed network of coal seam-floor combination, mobile network of coal seam-floor combination, fixed network of coal seam-roof-floor combination, mobile network of coal seam-roof-floor combination, etc.).

[0076] Microseismic monitoring system type, according to the characteristics of the system receiving vibration signal can be divided into low frequency microseismic monitoring system which mainly receives low frequency, low frequency microseismic signal, medium frequency microseismic monitoring system which mainly receives medium frequency, medium frequency and high frequency, and high frequency microseismic monitoring system which mainly receives high frequency, medium frequency and high frequency.

[0077] Electric method monitoring system library: according to the monitored area, it can be divided into roadway roof layout measuring line type, roadway floor layout measuring line type, hole in the coal seam layout measuring line type, hole roof layout measuring line type, hole floor layout measuring line type, hole-lane combined layout measuring line type.

[0078] 2, Establish monitoring system structure building standard

[0079] The mine hydrogeological type is simple, and the multi-parameter comprehensive monitoring system of the application is not considered to be established, and the hardware monitoring system matching table of the mine threatened by roof water (here, the roof water includes surface water body), floor water and old goaf water is shown as follows.

[0080]

[0081]

[0082]

[0083]

[0084]

[0085] 3, Selection, installation and operation of hardware system

[0086] According to the mine hydrogeological type, water hazard threat characteristics, mining layout and other conditions, the equipment selection is carried out according to the above-mentioned "hardware system structure building standard", the water hazard comprehensive monitoring hardware system of the mine is built, installed and debugged, and the data collection is started after the debugging.

[0087] The multi-source water inrush mine multi-parameter comprehensive monitoring system of the application can cover the main indicators in the whole process of water inrush, and can obtain real-time and dynamic information of each index associated with mine water.

[0088] In another aspect, the present application provides a warning method based on the multi-source water disaster mine multi-parameter comprehensive monitoring system, the warning method comprises a water source dynamic warning method (i.e. a water source dynamic warning algorithm), and the water source dynamic warning method comprises:

[0089] Step 101: extracting all monitoring indexes of water source dynamics;

[0090] In this step, the monitoring indexes can include a surface water level, an aquifer hydrological observation hole water level, an aquifer hydrological observation hole water temperature, an aquifer water outlet hole water pressure, an aquifer water outlet hole water temperature, an aquifer water outlet hole instantaneous flow, an aquifer water outlet hole unit cumulative flow, an old goaf sealed wall pressure, an old goaf water temperature, an old goaf water outlet hole instantaneous flow, and an old goaf water outlet hole unit cumulative flow.

[0091] Step 102: setting a reference value for each monitoring index;

[0092] In this step, the reference value can be set as an average value of the index in a mine safety production period.

[0093] Step 103: setting an absolute threshold value according to the reference value, and dividing into two kinds of high and low positions, when the monitoring value exceeds the high absolute threshold value or is lower than the low absolute threshold value, the index is in a secondary warning state;

[0094] Step 104: setting a mutation threshold value according to the reference value, when an absolute value of an index change amount in a certain time (self-defined) exceeds the mutation threshold value, the index is in a secondary warning state;

[0095] Step 105: when the index meets the absolute threshold value warning and the mutation threshold value warning at the same time, the index is in a primary warning state.

[0096] The water source dynamic warning method of the present application can realize real-time understanding of dynamic change conditions of all main indexes threatening water sources of a mine, through corresponding water source and corresponding regional ownership division of the indexes, once there is an abnormal index, the abnormal index ownership water source, the abnormal index ownership region, and the abnormal degree can be prompted, and then corresponding warning water source information, warning region information, warning time information, and warning level information can be prompted, and the method can more finely and quickly locate a target water source of warning.

[0097] In another aspect, the present application provides a warning method based on the multi-source water disaster mine multi-parameter comprehensive monitoring system, the warning method comprises a well and roadway space water inrush amount dynamic warning method (i.e. a well and roadway space water inrush amount dynamic warning algorithm), and the well and roadway space water inrush amount dynamic warning method comprises:

[0098] Step 201: dividing the monitoring indexes into key region (mining working face, tunneling working face, shaft, etc.) water inrush amount indexes and mine water inrush amount indexes;

[0099] In this step, the monitoring index can be calculated by the node monitoring value in the drainage network monitoring system.

[0100] Step 202: setting a reference value for the above monitoring index;

[0101] In this step, the reference value can be set as the average value of the index in the mine safety production period.

[0102] Step 203: setting an absolute threshold value according to the reference value, when the monitoring value exceeds the absolute threshold value, the index is in a secondary early warning state;

[0103] Step 204: setting a mutation threshold value according to the reference value, when the absolute value of the index change amount within a certain time (self-defined) exceeds the mutation threshold value, the index is in a secondary early warning state;

[0104] Step 205: when the index meets the absolute threshold value warning and the mutation threshold value warning at the same time, the index is in a primary early warning state.

[0105] The mine roadway space water inflow dynamic early warning method of the application can realize real-time understanding of the dynamic change of the water inflow of the key area (the mining working face, the tunneling working face, the shaft, etc.) and the whole mine, once the water inflow index is abnormal, the area with abnormal water inflow can be quickly traced, and then the warning area information, the warning time information and the warning level information are correspondingly prompted, the method can more accurately and quickly grasp the detailed situation of the mine roadway space water inflow, and provide accurate evidence for comprehensive warning.

[0106] In another aspect, the application provides a warning method based on the multi-parameter comprehensive monitoring system of the above multi-source water disaster mine, the warning method includes a water inrush channel warning method in the aquifer (i.e. a water inrush channel warning algorithm in the aquifer), here, the meanings of some nouns are defined in advance:

[0107] Aquifer: refers to the water-resisting coal rock layer (water-resisting coal rock pillar) between the mining space and the water-bearing body, according to the specific lithological characteristics and thickness, the aquifer is divided into three sub-layers, the sub-layer close to the mining space is called the proximal aquifer sub-layer, the sub-layer close to the water-bearing body is called the distal aquifer sub-layer, and the middle sub-layer is called the core aquifer sub-layer;

[0108] Monitoring unit: refers to one mining / tunneling working face or one water-resisting coal rock pillar;

[0109] Monitoring grid: the working face type monitoring unit is divided into a plane grid, and the water-resisting coal rock pillar type monitoring unit is divided into a profile grid, the grid is a square grid, and the size can be set as 1x1m, 5x5m, 10x10m, etc. (the size can be adjusted);

[0110] Energy release rate Q EThe energy release rate of the near-end aquitard grid Q E1 The energy release of the core aquitard grid Q E2 The energy release rate of the far-end aquitard grid Q E3 ;

[0111] The degree of fracture development in the aquitard is evaluated based on the energy release rate, and a threshold value is set according to the lithology, thickness, and empirical value of the energy release rate of each aquitard layer to perform a three-level evaluation of the degree of fracture development. Taking the near-end aquitard grid as an example:

[0112] 0J≤Q E1 <Q WZ1 J, which represents that the near-end aquitard in the grid has no open fracture development, and the aquitard performance remains complete, which is defined as a complete state.

[0113] Q WZ1 J≤Q E1 <Q LX1 J, which represents that the near-end aquitard in the grid has a low-density fracture development, and there is a possibility of connectivity, which is defined as a damage state.

[0114] Q E1 ≥Q LX1 J, which represents that the near-end aquitard in the grid has a high-density fracture development, and the fractures are connected, which is defined as a connected state.

[0115] In this embodiment, as shown in Figure 1 , the water inrush channel warning method in the aquitard includes:

[0116] Step 301: aquitard layer division, definition of monitoring unit, determination of monitoring grid size and range;

[0117] Step 302: respectively set the near-end / core / far-end aquitard grid energy release rate threshold values Q WZ and Q LX , the threshold value Q WZ represents the dividing point between the complete state and the damage state of the grid, and the threshold value Q LX represents the dividing point between the damage state and the connected state of the grid;

[0118] Step 303: according to the microseismic monitoring result, calculate all near-end aquitard grid energy release rates Q E1 , all core aquitard grid energy releases Q E2 , and all far-end aquitard grid energy release rates Q E3 at intervals of a preset time (for example, the calculation frequency can be set to calculate once every 10 minutes).

[0119] Step 304: according to the results of step 303 and the set threshold, all the remote water-resisting layered grid states are traversed and calculated;

[0120] Step 305: according to the calculated remote water-resisting layered grid states, a pre-warning judgment is made;

[0121] Step 306: according to the pre-warning results and the field measurement results, the threshold of the division of each water-resisting layered grid state is corrected.

[0122] Preferably, the step 305 comprises:

[0123] Step 3051: in the step 304, if all are the intact state, the core water-resisting layer and the near-end water-resisting layer do not need to be traversed, and the water inrush channel does not have the condition to be formed, and the water inrush channel has no pre-warning;

[0124] Step 3052: in the step 304, if a grid is in the damaged state, the grid corresponding to the position of the core water-resisting layer and the damaged grid is taken as the center, and the grid in the circular region with R (3-5 times the grid side length) as the radius is traversed, if all are the intact state, the water inrush channel does not have the condition to be formed, and the water inrush channel has no pre-warning;

[0125] Step 3053: in the step 3052, if there is a grid in the damaged state in the circular region of the core water-resisting layer, the grid corresponding to the position of the core water-resisting layer is taken as the center, and the grid in the circular region with R (3-5 times the grid side length) as the radius is traversed, if all are the intact state, the water inrush channel does not have the condition to be formed, and the water inrush channel has no pre-warning; if there is a damaged grid, the grid is the blue pre-warning of the water inrush channel; if there is a connected grid, the grid is the yellow pre-warning of the water inrush channel;

[0126] Step 3054: in the step 3052, if there is a grid in the connected state in the circular region of the core water-resisting layer, the grid corresponding to the position of the core water-resisting layer is taken as the center, and the grid in the circular region with R (3-5 times the grid side length, the same below, not repeated) as the radius is traversed, if all are the intact state, the grid in the connected state of the core water-resisting layer is the blue pre-warning of the water inrush channel; if there is a grid in the damaged state, the grid is the yellow pre-warning of the water inrush channel; if there is a grid in the connected state, the grid is the orange pre-warning of the water inrush channel;

[0127] Step 3055: in the step 304, if a grid is in the connected state, the grid corresponding to the position of the core water-resisting layer and the connected grid is taken as the center, and the grid in the circular region with R as the radius is traversed, if all are the intact state, the water inrush channel does not have the condition to be formed, and the water inrush channel has no pre-warning;

[0128] Step 3056: In the step 3055, if there is a damage state grid in the core water-resisting layer circular region, then in the near-end water-resisting layer, a grid is traversed with the position corresponding to the grid as the center and R as the radius, if all are in the complete state, then the water inrush channel is blue pre-alarmed at the damage state grid in the core water-resisting layer, if there is a damage state grid, then the water inrush channel is yellow pre-alarmed at the grid, and if there is a connected state grid, then the water inrush channel is orange pre-alarmed at the grid.

[0129] Step 3057: In the step 3055, if there is a connected state grid in the core water-resisting layer circular region, then in the near-end water-resisting layer, a grid is traversed with the position corresponding to the grid as the center and R as the radius, if all are in the complete state, then the water inrush channel is yellow pre-alarmed at the connected state grid in the core water-resisting layer, if there is a damage state grid, then the water inrush channel is orange pre-alarmed at the grid, and if there is a connected state grid, then the water inrush channel is red pre-alarmed at the grid.

[0130] The water inrush channel pre-alarming method in the water-resisting layer of the present application can not only describe the position of the fracture formed by the rock stratum damage, but also evaluate the connection of the fracture in the vertical direction after the rock stratum damage, the rock stratum is divided into layers in the vertical direction based on the lithology and thickness characteristics of the water-resisting layer, the damage degree of each layer is evaluated layer by layer according to the microseismic monitoring result, the damage of each water-resisting layer can be accurately evaluated, in addition, the coincidence of the damage area of each layer in the vertical direction is judged by the layer-by-layer search method, and the process characteristics of the water inrush channel formation are more objectively described. The method can accurately and objectively pre-alarm the water inrush channel.

[0131] In another aspect, the present application provides a pre-alarming method based on the multi-parameter comprehensive monitoring system of the multi-source water disaster mine, the pre-alarming method comprises a water filling process pre-alarming method (i.e. a water filling process pre-alarming algorithm) in the water-resisting layer, here, the meanings of some noun references are defined in advance:

[0132] The near-end water-resisting layer, the core water-resisting layer and the far-end water-resisting layer in the water-resisting layer are consistent with the previous division;

[0133] The range, size and other parameters of the monitoring unit and the monitoring grid are consistent with the previous division;

[0134] Grid apparent resistivity: the apparent resistivity value of the grid center point at the corresponding position is extracted from the apparent resistivity distribution cloud diagram measured by the electrical method monitoring system, which is called the apparent resistivity of the grid;

[0135] Baseline grid apparent resistivity: the grid apparent resistivity measured when the surrounding rock in the monitoring unit is not disturbed by mining is called the baseline grid apparent resistivity;

[0136] Grid apparent resistivity downward change rate Q ρQ is in grid units. ρ = (Measured apparent resistivity of the grid - apparent resistivity of the reference grid) × 100% / apparent resistivity of the reference grid. Based on the above-described water-impermeable strata and grid, this is called the rate of change of apparent resistivity of the near-end water-impermeable strata grid downwards, Q. ρ1 The rate of change of apparent resistivity Q of the core waterproof layered grid ρ2 The rate of change of apparent resistivity Q in the far-end water-resistant layered grid ρ3 ;

[0137] The downward change in apparent resistivity represents a change in the water-bearing capacity of the surrounding rock at that location. The water-filling degree within the aquitard is evaluated based on the rate of change in apparent resistivity. Thresholds are set according to the lithology, thickness, and baseline apparent resistivity value of each aquitard layer to conduct a three-level evaluation of the water-filling degree of the aquitard. Taking the near-end aquitard layer grid as an example:

[0138] Q ρ1 ≥0 indicates that there is no downward change in apparent resistivity in the near-end water-impermeable stratification of the grid, and there is no possibility of water filling. This situation is defined as the unfilled state.

[0139] Q w1 ≤Q ρ1 <0 indicates that the near-end water-resistant stratification of the grid exhibits reasonable downward fluctuations in resistivity, with no possibility of water filling. This situation is defined as an unfilled state.

[0140] Q c1 ≤Q ρ1 <Q w1 This indicates a slight downward change in the near-end aquitard layer within the grid, suggesting the possibility of water filling. This situation is defined as a trend of water filling.

[0141] -100%≤Q ρ1 <Q c1 This indicates a severe downward change in the near-end aquifer within the grid, indicating that water filling has occurred; this situation is defined as a water-filled state.

[0142] In this embodiment, as Figure 2 As shown, the early warning method for the water filling process in the waterproof layer includes:

[0143] Step 401: Divide the water-resistant layers, define the monitoring units, and determine the size and range of the monitoring grid;

[0144] Step 402: Measure the reference apparent resistivity of each grid in each waterproof layer;

[0145] Step 403: Determine the threshold Q for the rate of change of apparent resistivity of the near-end / core / far-end water-resistant stratified grid. w and Q c Threshold Q w The grid represents the boundary between the unfilled state and the trending filled state, with a threshold Q.c represents the demarcation point between the trend water filling state and the water filling state;

[0146] Step 404: According to the resistivity monitoring results, the downward change rate Q of the apparent resistivity of all proximal aquifuges is calculated ρ1 , the downward change rate Q of the apparent resistivity of all core aquifuges is calculated ρ2 , the downward change rate Q of the apparent resistivity of all distal aquifuges is calculated ρ3 , the frequency is consistent with the monitoring frequency of the electrical method monitoring system;

[0147] Step 405: According to the results of step 404 and the set threshold value, the state of all distal aquifuges is calculated;

[0148] Step 406: According to the calculated state of the distal aquifuge, a warning judgment is made;

[0149] Step 407: According to the actual observation results on site, the threshold value of the state division of each aquifuge is corrected.

[0150] Preferably, the step 406 comprises:

[0151] Step 4061: In step 405, if all are in the unwatered state, the core aquifuge and the proximal aquifuge do not need to be traversed, and there is no condition for water filling and supplement to the mining space, and the water filling process is not warned;

[0152] Step 4062: In step 405, if a grid is in the trend water filling state, take the grid corresponding to the position of the core aquifuge and the trend water filling state grid as the center, and R (3-5 times the length of the grid side, the same below, not repeated) as the radius, traverse the grids in the circular area, if all are in the unwatered state, there is no condition for water filling and supplement to the mining space, and the water filling process is not warned;

[0153] Step 4063: In step 4062, if there is a trend water filling state grid in the core aquifuge circular area, take the corresponding position of the grid as the center in the proximal aquifuge, and R as the radius, traverse the grids in the circular area, if all are in the unwatered state, there is no condition for water filling and supplement to the mining space, and the water filling process is not warned; if there is a trend water filling grid, the grid is a blue warning for the water filling process; if there is a water filling grid, the grid is a yellow warning for the water filling process;

[0154] Step 4064: In step 4062, if there is a water-filled grid within the circular area of ​​the core waterproof layer, then within the near-end waterproof layer, taking the position corresponding to the grid as the center and R as the radius, traverse the grids within the circular area. If all are in an unfilled state, then a blue warning for water filling progress is issued at the water-filled grid of the core waterproof layer; if there is a trending water-filled grid, then a yellow warning for water filling progress is issued at that grid; if there is a water-filled grid, then an orange warning for water filling progress is issued at that grid.

[0155] Step 4065: In step 405, if a certain grid is in a water-filled state, then with the grid corresponding to the core water-proof layer and the water-filled grid position as the center and R as the radius, traverse the grids within the circular area. If all grids are in an unfilled state, then there is no condition to fill and replenish the mining space with water, and the water filling process is not warned.

[0156] Step 4066: In step 4065, if there is a trend of water filling state grid within the circular area of ​​the core waterproof layer, then within the near-end waterproof layer, taking the position corresponding to the grid as the center and R as the radius, traverse the grids within the circular area. If all are in an unfilled state, then a blue warning for water filling progress is issued at the grid of the trend of water filling state in the core waterproof layer; if there is a grid of the trend of water filling state, then a yellow warning for water filling progress is issued at that grid; if there is a grid of the water filling state, then an orange warning for water filling progress is issued at that grid.

[0157] Step 4067: In step 4065, if there is a water-filled grid within the circular area of ​​the core waterproof layer, then within the near-end waterproof layer, taking the position corresponding to the grid as the center and R as the radius, traverse the grids within the circular area. If all are in an unfilled state, then a yellow warning for the water-filled state grid in the core waterproof layer is issued; if there is a trending water-filled grid, then an orange warning for the water-filled state is issued; if there is a water-filled grid, then a red warning for the water-filled state is issued.

[0158] The water-filling process early warning method in the impermeable layer of this invention evaluates the progression of water into the mining space based on the rate of change of resistivity. It divides the impermeable layer into vertical layers based on the lithology and thickness characteristics of the rock strata, and uses a layer-by-layer search method to determine the vertical progression of each layer. This method can accurately quantify the layer position, range, and degree of water progression into the mining space, thereby improving the timeliness of the early warning. This method can provide accurate, objective, and timely early warning of the water-filling process.

[0159] So far, the multi-source water disaster mine multi-parameter comprehensive monitoring system and the early warning method thereof have been introduced in detail, the present application can give multi-source index early warning to water disaster, and the early warning precision is high. The advantages of the present application are at least: (1) the hardware monitoring system architecture design has globality and pertinence: in terms of globality, a unified early warning index system is established, the monitoring and early warning system has unity and advancement, and can cover all mining areas threatened by water disaster in the mine; in terms of pertinence, a perfect source monitoring hardware system is built according to the water disaster characteristics of the mining area; (2) the present application establishes a multi-source index accurate early warning algorithm system, which improves the early warning precision; (3) the present application has wide application range, comprehensive monitoring, high precision of early warning results, including regional classification, size accuracy of potential water inrush position and process control of potential water inrush time.

[0160] Further, the present application can also fuse multi-source indexes to further improve the early warning precision, that is, the present application provides an early warning method based on the above multi-parameter comprehensive monitoring system of multi-source water disaster mine, the early warning method includes a source monitoring comprehensive early warning method (i.e. a source monitoring comprehensive early warning algorithm), it can be understood that the water source dynamic early warning calculation, the mine roadway space water inrush amount dynamic early warning calculation, the water inrush channel early warning calculation in the aquiclude, and the water filling process early warning calculation in the aquiclude are completed before the comprehensive early warning calculation.

[0161] In this embodiment, as shown in Figure 3 The source monitoring comprehensive early warning method includes:

[0162] Step 501: defining the monitoring unit and the monitoring grid;

[0163] In this step, the grid division (position, size) is consistent with the previous one, which is the superposition of the previous aquiclude layers.

[0164] Step 502: taking the center of the grid as the center and R as the radius, traversing the water inrush channel early warning level and the water filling process early warning level of all the grids in the circular area;

[0165] Step 503: according to the water inrush channel early warning level and the water filling process early warning level, making a comprehensive early warning judgment;

[0166] Step 504: querying the water source dynamic early warning calculation result and the mine roadway space water inrush amount dynamic early warning calculation result, if both of them do not reach the first early warning state, the comprehensive early warning result is consistent with the output result of step 503; if one of them reaches the first early warning state, the comprehensive early warning result is one level higher than the output result of step 503; if both of them reach the first early warning state, the comprehensive early warning result is two levels higher than the output result of step 503.

[0167] Preferably, the step 503 comprises:

[0168] Step 5031: if the water inrush channel and the water filling process in a certain circular area are both without early warning, the comprehensive early warning result is without early warning;

[0169] Step 5032: if the water inrush channel in a certain circular area is without early warning, there is one and more than one grid of the blue and yellow early warning levels of the water filling process, the comprehensive early warning result is blue early warning;

[0170] Step 5033: if the water inrush channel in a certain circular area is without early warning, there is one and more than one grid of the orange and red early warning levels of the water filling process, the comprehensive early warning result is yellow early warning;

[0171] Step 5034: if the water filling process in a certain circular area is without early warning, there is one and more than one grid of the blue and yellow early warning levels of the water inrush channel, the comprehensive early warning result is blue early warning;

[0172] Step 5035: if the water filling process in a certain circular area is without early warning, there is one and more than one grid of the orange and red early warning levels of the water inrush channel, the comprehensive early warning result is yellow early warning;

[0173] Step 5036: if there is one and more than one water inrush channel of the blue and yellow early warning in a certain circular area, and there is one and more than one grid of the blue and yellow early warning levels of the water filling process, the comprehensive early warning result is yellow early warning;

[0174] Step 5037: if there is one and more than one water inrush channel of the blue and yellow early warning in a certain circular area, and there is one and more than one grid of the orange and red early warning levels of the water filling process, the comprehensive early warning result is orange early warning;

[0175] Step 5038: if there is one and more than one water inrush channel of the orange and red early warning in a certain circular area, and there is one and more than one grid of the blue and yellow early warning levels of the water filling process, the comprehensive early warning result is orange early warning;

[0176] Step 5039: if there is one and more than one water inrush channel of the orange and red early warning in a certain circular area, and there is one and more than one grid of the orange and red early warning levels of the water filling process, the comprehensive early warning result is red early warning.

[0177] The four elements contained in the comprehensive early warning method of the mine water inrush source monitoring are indispensable elements in the mine water inrush process, and the indexes in the water inrush initiation stage, the water inrush hidden progress stage, the water inrush appearance progress stage and the water inrush disaster stage are contained. In the method, the four elements are associated in the time and space dimensions, and the early warning result accuracy is greatly improved compared with the single element early warning result. Specific embodiments:

[0179] The coal seam mined by a certain mine is No. 2 coal seam, and the hydrogeological type is extremely complex. During the mining of No. 16001 working face in the west six area of the mine, the top and floor water threaten respectively, wherein the direct water filling source of the floor is L8 limestone water, the thickness of L8 limestone is 6.0-10.0 m, the average thickness is 8.0 m, the distance from the top of L8 limestone to the floor of No. 2 coal seam is 26.0-38.0 m, the average distance is 32.5 m, the water pressure is 5.0-5.3 MPa, the water inrush coefficient is 0.139-0.192 MPa / m, and there is a water inrush risk. The indirect water filling source of the floor is L2 limestone water and O2 limestone water. The roof is thin bedrock, and is threatened by the sand and gravel aquifer in the middle and bottom of the Neogene system, and the water and sand inrush of the weathered bedrock aquifer.

[0180] According to the first step and the second step of the present application, the monitoring system meeting the needs of the mine is built, as shown in the following table:

[0181]

[0182] The third step: after the above system is installed and debugged, the data is collected;

[0183] The fourth step: water source dynamic monitoring

[0184] ① The extracted indexes include the water level and water temperature indexes of L8 limestone hydrological observation hole, the water level and water temperature indexes of L2 limestone hydrological observation hole, the water level and water temperature indexes of O2 limestone hydrological observation hole, the water level and water temperature indexes of the sand and gravel aquifer in the bottom of the Neogene system, and the water level and water temperature indexes of the weathered bedrock aquifer;

[0185] ② The absolute threshold and mutation threshold of the secondary warning of the above indexes are formulated;

[0186] ③ The monitoring data is compared, and whether the secondary warning or the primary warning of the water source dynamic appears is prompted;

[0187] The fifth step: water inrush dynamic monitoring

[0188] ① The extracted indexes include the water inrush of the mine and the water inrush of No. 16001 working face;

[0189] ② The absolute threshold and mutation threshold of the secondary warning of the above indexes are formulated;

[0190] ③ The monitoring data is compared, and whether the secondary warning or the primary warning of the water inrush dynamic appears is prompted;

[0191] The sixth step: monitoring of water inrush channel in aquiclude

[0192] ① The aquiclude is divided into layers, and the floor aquiclude is divided into layers as follows: Figure 4 The first aquiclude group is the proximal aquiclude, the second aquiclude group is the core aquiclude, and the third aquiclude group is the distal aquiclude.Figure 5 As shown, the working face 16001 is defined as a monitoring unit; the monitoring grid size is 10x10m;

[0193] ②Respectively, the energy release rate threshold Q WZ1 , Q WZ2 , Q WZ3 and Q LX1 , Q LX2 , Q LX3 of the near-end / core / far-end water-resisting layered grid are formulated respectively;

[0194] ③According to the microseismic monitoring results, the energy release rate Q E1 , Q E2 , Q E3 of the near-end / core / far-end water-resisting layered grid is calculated respectively;

[0195] ④Execute the water inrush channel early warning algorithm, when the working face advances to about 220m from the cut, at 12:00 on June 20, 2021, after traversing and calculating the state of the far-end water-resisting grid, the grid 20m behind the working face and 60m from the upper crossheading is in a damage state, as shown in Figure 6 ;

[0196] ⑤Taking the above grid position as the center and 3 times the grid length as the radius, search the state of the core water-resisting layered grid, the result is that the grid 30m behind the working face and 40m from the upper crossheading is in a connected state, and the grid 40m behind the working face and 50m from the upper crossheading is in a damage state, as shown in Figure 7 ;

[0197] ⑥Respectively, taking the above two grid positions as the center and 3 times the grid length as the radius, search the state of the near-end water-resisting layered grid, the result is that the grid 20m behind the working face and 20m from the upper crossheading, the grid 30m behind the working face and 20m from the upper crossheading, and the grid 40m behind the working face and 30m from the upper crossheading are all in a damage state, as shown in Figure 8 ;

[0198] ⑦Output the position and early warning level of all water inrush channel early warning grids, as shown in Figure 9 ;

[0199] Step 7: Monitoring of water filling process in water-resisting layer

[0200] ①The water-resisting layered division, monitoring unit, and grid size remain the same as in the sixth step;

[0201] ②Test the baseline apparent resistivity of each grid in each water-resisting layer;

[0202] ③Respectively, formulate the apparent resistivity downward change rate threshold Q w1 , Q w2 , Q w3 and Qc1 , Q c2 , Q c3 ;

[0203] ④According to the resistivity monitoring results, the downlink change rate Q of the apparent resistivity of all near-end / core / far-end water-resisting layered grids is calculated ρ1 , Q ρ2 , Q ρ3 ;

[0204] ⑤Execute the water filling process warning algorithm. When the working face advances to about 220 m from the cut, at 02:00 on June 20, 2021, after traversing and calculating the state of the far-end water-resisting layered grid, the grid 20 m behind the working face and 50 m away from the upper crossheading is in a trend water filling state, as shown in Figure 10 ;

[0205] ⑥Take the above grid position as the center and 3 times the grid length as the radius to search for the state of the core water-resisting layered grid. The result is that the grid 30 m behind the working face and 50 m away from the upper crossheading is in a trend water filling state, as shown in Figure 11 ;

[0206] ⑦Take the above grid position as the center and 3 times the grid length as the radius to search for the state of the near-end water-resisting layered grid. The result is that all grids in the search area are in an unwatered state;

[0207] ⑧Output the positions and warning levels of all water filling process warning grids, as shown in Figure 12 ;

[0208] Step 8: Comprehensive warning calculation

[0209] ①According to the water inrush channel warning calculation results and the water filling process warning results, the first step of comprehensive warning calculation on June 20, 2021 at 12:00 is yellow warning;

[0210] ②On June 20, 2021 at 12:00, the water source dynamic warning calculation results and the well and roadway water inflow dynamic warning calculation results are queried, and the comprehensive warning result is yellow warning;

[0211] ③On June 20, 2021 at 16:00, the water source dynamic warning calculation results and the well and roadway water inflow dynamic warning calculation results are queried. The absolute value and mutation value indicators of the water inflow of 16001 working face all reach the second level of warning state, so the water inflow dynamic reaches the first level of warning state, and the comprehensive warning result is upgraded to orange warning;

[0212] Step 9: Start warning disposal measures;

[0213] The working face stops mining, a floor grouting reinforcement project is implemented in a yellow pre-warning area of a water inrush channel, after 3 floor drilling constructions and 682 tons of cement grouting, a water inrush amount index of the 16001 working face is reduced to a normal range.

[0214] The above examples effectively verify the pre-warning effectiveness and pre-warning accuracy of the method.

[0215] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pre-warning method of a multi-parameter comprehensive monitoring system of a multi-source water disaster mine, characterized in that, The multi-source water disaster mine multi-parameter comprehensive monitoring system comprises a hydrological dynamic monitoring system established for water source elements, a microseismic monitoring system established for water channel elements, and an electrical method monitoring system established for water filling intensity elements, wherein: The hydrological dynamic monitoring system comprises at least one of a meteorological observation system, an aquifer hydrological hole observation system, an aquifer drainage hole observation system, an old goaf water observation system, an underground drainage network monitoring system, a main drainage monitoring system, and a water quality monitoring system; The microseismic monitoring system comprises at least one of a fixed network in the coal seam, a mobile network in the coal seam, a fixed network combined with the coal seam and the roof, a mobile network combined with the coal seam and the roof, a fixed network combined with the coal seam and the floor, a mobile network combined with the coal seam and the floor, a fixed network combined with the coal seam, the roof and the floor, and a mobile network combined with the coal seam, the roof and the floor; The electrical method monitoring system comprises at least one of a roadway roof arrangement measuring line type, a roadway floor arrangement measuring line type, a hole-in-coal-seam arrangement measuring line type, a hole-in-roof arrangement measuring line type, a hole-in-floor arrangement measuring line type, and a hole-lane combined arrangement measuring line type according to different monitored areas; The pre-warning method comprises a water inrush channel pre-warning method in the aquifer and / or a water filling process pre-warning method in the aquifer, wherein: The water inrush channel pre-warning method in the aquifer comprises: Step 301: aquifer layering, definition of monitoring units, determination of monitoring grid size and range; Step 302: Establishing the near-end / core / far-end water-resisting layered grid energy release rate threshold Q WZ and Q LX , the threshold Q WZ represents the demarcation point between the intact state and the damage state of the grid, and the threshold Q LX represents the demarcation point between the damage state and the connected state of the grid; wherein, when the water-resisting layered grid energy release rate Q E satisfies 0J≤Q E J<Q WZ J, it represents that the water-resisting layered basic non-opening fracture develops in the grid, and the water-resisting performance remains intact, which is defined as the intact state; when Q WZ J≤Q E J<Q LX J, it represents that the water-resisting layered develops low-density fractures in the grid, and there is a possibility of connection, which is defined as the damage state; when Q E J≥Q LX J, it represents that the water-resisting layered develops high-density fractures in the grid, and the fractures are connected, which is defined as the connected state; Step 303: According to the microseismic monitoring results, calculate the energy release rate Q of all near-end water-resisting layered grids once every preset time interval E1 , the energy release Q of all core water-resisting layered grids E2 , the energy release rate Q of all far-end water-resisting layered grids E3 ; Step 304: according to the results of step 303 and the set threshold value, all remote aquifer layer grid states are calculated; Step 305: according to the calculated remote aquifer layer grid state, pre-warning judgment is made; Step 306: according to the pre-warning results and the field measurement results, the threshold value of the aquifer layer grid state division is corrected; The water filling process pre-warning method in the aquifer comprises: Step 401: aquifer layering, definition of monitoring units, determination of monitoring grid size and range; Step 402: measuring the baseline apparent resistivity of each grid of each aquifer layer; Step 403: Establishing the near-end / core / far-end water-resisting layered grid apparent resistivity downward change rate threshold Q w and Q c , the threshold Q w represents the demarcation point between the un-watered state and the trend watered state of the grid, and the threshold Q c represents the demarcation point between the trend watered state and the watered state of the grid; wherein, when the water-resisting layered grid apparent resistivity downward change rate Q ρ satisfies Q ρ ≥ 0, it represents that the apparent resistivity downward change of the water-resisting layered grid does not occur, and there is no possibility of water filling, which is defined as the un-watered state; satisfies Q w ≤ Q ρ < 0, it represents that the apparent resistivity of the water-resisting layered grid reasonably fluctuates downward, and there is no possibility of water filling, which is defined as the un-watered state; satisfies Q c ≤ Q ρ < Q w , it represents that the water-resisting layered grid slightly changes downward, and there is a possibility of water filling, which is defined as the trend watered state; satisfies -100% ≤ Q ρ < Q c , it represents that the water-resisting layered grid severely changes downward, and water filling has occurred, which is defined as the watered state; Step 404: According to the resistivity monitoring result, calculate the down-going rate Q of apparent resistivity of all near-end water-resisting layered grids ρ1 , the down-going rate Q of apparent resistivity of all core water-resisting layered grids ρ2 , the down-going rate Q of apparent resistivity of all far-end water-resisting layered grids ρ3 , the calculation frequency is consistent with the monitoring frequency of the electrical method monitoring system; Step 405: according to the results of step 404 and the set threshold value, all remote aquifer layer grid states are calculated; Step 406: according to the calculated remote aquifer layer grid state, pre-warning judgment is made; Step 407: according to the actual observation results, the threshold value of the aquifer layer grid state division is corrected.

2. The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine of claim 1, characterized in that, In the hydrological dynamic monitoring system: The installation position of the meteorological observation system comprises a surface water body and a ground meteorological station, and the monitoring indexes comprise atmospheric rainfall, surface water level and surface water temperature; The installation position of the aquifer hydrological hole observation system comprises the ground and underground, and the monitoring indexes comprise water level and water temperature; The monitoring indexes of the aquifer drainage hole observation system comprise water pressure, water temperature, instantaneous flow and cumulative flow; The installation position of the old goaf water observation system comprises airtight walls and drainage holes, and the monitoring indexes comprise airtight wall pressure, water temperature, instantaneous flow and cumulative flow; The installation position of the underground drainage network monitoring system comprises drainage pipe network and open channel network nodes, and the monitoring indexes comprise instantaneous flow and cumulative flow; The installation position of the main drainage monitoring system includes main pump house and mining area pump house, and the monitoring indexes include water level of sump, water pump state, instantaneous drainage capacity and cumulative drainage capacity. The installation position of the water quality monitoring system includes water quality monitoring demand of gushing / water drainage point, and the monitoring indexes include turbidity, conductivity, PH value and main ion concentration.

3. The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine of claim 1 or 2, characterized in that, The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine includes a water source dynamic early warning method, and the water source dynamic early warning method comprises: Step 101: extracting all water source dynamic monitoring indexes; Step 102: setting a reference value for each monitoring index; Step 103: setting an absolute threshold value according to the reference value, and dividing into high and low positions, when the monitoring value exceeds the high absolute threshold value or is lower than the low absolute threshold value, the index is in a secondary early warning state; Step 104: setting a mutation threshold value according to the reference value, when the absolute value of the index change amount within a certain time exceeds the mutation threshold value, the index is in a secondary early warning state; Step 105: when the index meets the absolute threshold value early warning and the mutation threshold value early warning at the same time, the index is in a primary early warning state.

4. The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine of claim 1 or 2, characterized in that, The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine includes a mine roadway space gushing water amount dynamic early warning method, and the mine roadway space gushing water amount dynamic early warning method comprises: Step 201: dividing the monitoring indexes into key area gushing water amount indexes and mine gushing water amount indexes; Step 202: setting a reference value for the above monitoring indexes; Step 203: setting an absolute threshold value according to the reference value, when the monitoring value exceeds the absolute threshold value, the index is in a secondary early warning state; Step 204: setting a mutation threshold value according to the reference value, when the absolute value of the index change amount within a certain time exceeds the mutation threshold value, the index is in a secondary early warning state; Step 205: when the index meets the absolute threshold value early warning and the mutation threshold value early warning at the same time, the index is in a primary early warning state.

5. The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine of claim 1 or 2, characterized in that, The step 305 comprises: Step 3051: in the step 304, if they are all complete states, there is no need to traverse the core water-resisting layer and the near-end water-resisting layer, which does not have the condition of forming a water inrush channel, and the water inrush channel has no early warning; Step 3052: in the step 304, if a certain grid is in a damage state, taking the grid corresponding to the position of the core water-resisting layer as the center and R as the radius, the grids in the circular region are traversed, if they are all complete states, the condition of forming a water inrush channel is not met, and the water inrush channel has no early warning; Step 3053: in the step 3052, if there is a damage state grid in the core water-resisting layer circular region, taking the grid corresponding position as the center and R as the radius, the grids in the circular region are traversed, if they are all complete states, the condition of forming a water inrush channel is not met, and the water inrush channel has no early warning; if there is a damage grid, the grid is in a blue early warning state of the water inrush channel; if there is a connected grid, the grid is in a yellow early warning state of the water inrush channel; Step 3054: in the step 3052, if there is a connected state grid in the core aquifuge circular area, in the proximal aquifuge, the position corresponding to the grid is taken as the center, R is the radius, the grids in the circular area are traversed, if they are all complete state, the core aquifuge connected state grid is blue warning for water inrush channel; if there is a damage state grid, the grid is yellow warning for water inrush channel; if there is a connected state grid, the grid is orange warning for water inrush channel; Step 3055: in the step 304, if a grid is in a connected state, the grid corresponding to the position of the core aquifuge and the connected grid is taken as the center, R is the radius, the grids in the circular area are traversed, if they are all complete state, the condition of forming water inrush channel is not met, and there is no warning for water inrush channel; Step 3056: in the step 3055, if there is a damage state grid in the core aquifuge circular area, in the proximal aquifuge, the position corresponding to the grid is taken as the center, R is the radius, the grids in the circular area are traversed, if they are all complete state, the core aquifuge damage state grid is blue warning for water inrush channel; if there is a damage state grid, the grid is yellow warning for water inrush channel; if there is a connected state grid, the grid is orange warning for water inrush channel; Step 3057: in the step 3055, if there is a connected state grid in the core aquifuge circular area, in the proximal aquifuge, the position corresponding to the grid is taken as the center, R is the radius, the grids in the circular area are traversed, if they are all complete state, the core aquifuge connected state grid is yellow warning for water inrush channel; if there is a damage state grid, the grid is orange warning for water inrush channel; if there is a connected state grid, the grid is red warning for water inrush channel.

6. The early warning method of the multi-parameter comprehensive monitoring system of the multi-source water disaster mine of claim 1 or 2, characterized in that, The step 406 includes: Step 4061: in the step 405, if they are all unwatered state, it is not necessary to traverse the core aquifuge and the proximal aquifuge, the condition of water filling and supplement to the mining space is not met, and there is no warning for water filling process; Step 4062: in the step 405, if a grid is in a trend water filling state, the grid corresponding to the position of the core aquifuge and the trend water filling state grid is taken as the center, R is the radius, the grids in the circular area are traversed, if they are all unwatered state, the condition of water filling and supplement to the mining space is not met, and there is no warning for water filling process; Step 4063: in the step 4062, if there is a trend water filling state grid in the core aquifuge circular area, in the proximal aquifuge, the position corresponding to the grid is taken as the center, R is the radius, the grids in the circular area are traversed, if they are all unwatered state, the condition of water filling and supplement to the mining space is not met, and there is no warning for water filling process; if there is a trend water filling grid, the grid is blue warning for water filling process; if there is a water filling grid, the grid is yellow warning for water filling process; Step 4064: In the step 4062, if there is a water-filled grid in the core aquifuge circular area, in the near aquifuge, the position corresponding to the grid is taken as the center, R is the radius, and the grids in the circular area are traversed. If they are all in the unfilled state, the core aquifuge water-filled grid is blue warning for water filling process; if there is a trend water-filled grid, the grid is yellow warning for water filling process; if there is a water-filled grid, the grid is orange warning for water filling process; Step 4065: In the step 405, if a grid is in the water-filled state, the grid corresponding to the position of the core aquifuge and the water-filled grid is taken as the center, R is the radius, and the grids in the circular area are traversed. If they are all in the unfilled state, there is no condition for water filling and supplement in the mining space, and there is no warning for water filling process; Step 4066: In the step 4065, if there is a trend water-filled grid in the core aquifuge circular area, in the near aquifuge, the position corresponding to the grid is taken as the center, R is the radius, and the grids in the circular area are traversed. If they are all in the unfilled state, the core aquifuge trend water-filled grid is blue warning for water filling process; if there is a trend water-filled grid, the grid is yellow warning for water filling process; if there is a water-filled grid, the grid is orange warning for water filling process; Step 4067: In the step 4065, if there is a water-filled grid in the core aquifuge circular area, in the near aquifuge, the position corresponding to the grid is taken as the center, R is the radius, and the grids in the circular area are traversed. If they are all in the unfilled state, the core aquifuge water-filled grid is yellow warning for water filling process; if there is a trend water-filled grid, the grid is orange warning for water filling process; if there is a water-filled grid, the grid is red warning for water filling process.

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