Duplex pump room positive pressure water feeding intelligent drainage system and water inflow measuring method

Abstract

The invention provides a duplex pump room positive pressure water feeding intelligent drainage system and a water inflow measuring method. The duplex pump room positive pressure water feeding intelligent drainage system comprises a lower pump room unit, an upper pump room unit, a pipeline system, a valve unit, a detection unit and a control unit. Wherein the lower pump room unit is located above the water diversion well; the upper pump room unit is positioned above a mine laneway; the pipeline system is positioned in the lower pump room unit, the upper pump room unit, the water diversion well and the channel; the valve unit is mounted on the system pipeline; the detection units are installed on the upper pump room unit, the lower pump room unit, the three water diversion wells and the system pipeline. The invention further provides a water inflow measuring method. The water inflow measuring method comprises the steps that the water sump is calibrated through a water supplementing liquid level calibration method; the total displacement of the duplex pump room positive pressure water feeding intelligent drainage system is obtained; and obtaining the total water inflow of the mine. The duplex pump room positive pressure water feeding intelligent drainage system and the water gushing method have the advantages of being high in control precision, good in safety and real-time performance, high in response speed, high in efficiency and the like, and can be widely applied to the field of mining industry.

Description

Technical Field

[0001] The invention relates to mine emergency drainage technology, and in particular to a double pump room positive pressure water feeding intelligent drainage system and a water inflow measurement method. Background Art

[0002] The underground drainage system of coal mines is an indispensable part of the coal mining process. The underground water in coal mines has the characteristics of large instantaneous water inflow, strong suddenness, and high harmfulness. Coal mine water seepage accidents occur frequently, and the incidence and mortality rate of water disasters are the main disasters second only to gas accidents.

[0003] In actual production, due to the limitation of the size of the coal mine water distribution well, the existing underground drainage system of coal mines mostly adopts a suction horizontal centrifugal pump drainage system, and the height of its pump room is usually consistent with the height of the underground tunnel of the coal mine. Before the horizontal centrifugal pump is started, it is necessary to fill the pump first, that is, the horizontal centrifugal pump adopts a negative pressure water absorption method. The negative pressure water absorption method is often accompanied by the occurrence of cavitation and cavitation, which greatly reduces the service life of the horizontal centrifugal pump. At the same time, when a sudden water surge occurs, once the pump room is flooded, the drainage system will be completely paralyzed and unable to continue to drain. At this time, the equipment cannot be evacuated, and the staff cannot escape in time, causing serious safety accidents. In view of this, how to solve the safe and reliable drainage when the sudden water surge occurs in the coal mine, and win the golden time for emergency drainage, is the main technical problem faced by coal mine drainage rescue.

[0004] It can be seen that in the prior art, there is no double pump room positive pressure water feeding intelligent drainage system and water inflow calculation method with high control accuracy, high safety, high reliability, fast emergency drainage response speed and high emergency drainage efficiency. Summary of the invention

[0005] In view of this, the main purpose of the present invention is to provide a double pump room positive pressure water feeding intelligent drainage system and a water inflow calculation method with high control accuracy, high safety, high reliability, fast emergency drainage response speed and high emergency drainage efficiency.

[0006] In order to achieve the above object, the first technical solution proposed by the present invention is: A double pump house positive pressure water feeding intelligent drainage system, comprising: connecting the water distribution well through the water distribution well cover, connecting the upper pump house unit through the channel, and feeding the mine water sucked by the three front pumps to the lower pump house unit of the upper pump house unit through the pipeline system under the drive of the three front motors according to the control instructions sent by the control unit; and installing three main drainage pumps and three main drainage motors, and feeding the mine water sucked by the three front pumps to the lower pump house unit through the pipeline system under the drive of the three main drainage motors according to the control instructions sent by the control unit. The mine water of Yuan is discharged to the upper pump room unit outside the mine by three main drainage pumps; it is used to connect the three pre-pumps in the lower pump room unit, connect the lower pump room unit with the upper pump room unit, and connect the upper pump room unit with the outside of the mine; it is used to control the valve unit of the pipeline system to conduct, shut off or flow size according to the control instruction of the control unit; it is used to detect the real-time water level of No. 1 water distribution well, the real-time water level of No. 2 water distribution well, the real-time water level of No. 3 water distribution well, the real-time water level of the lower pump room, and the water flow of the pipeline system to the outside of the mine. The detection unit sends the data to the control unit; it is used to pre-set the warning water level of No. 1 water distribution well, the warning water level of No. 2 water distribution well, the warning water level of No. 3 water distribution well, and the warning water level of the lower pump room, and compare the real-time water level of No. 1 water distribution well, the real-time water level of No. 2 water distribution well, the real-time water level of No. 3 water distribution well, and the real-time water level of the lower pump room sent by the detection unit with the warning water level of No. 1 water distribution well, the warning water level of No. 2 water distribution well, the warning water level of No. 3 water distribution well, and the warning water level of the lower pump room; it is also used to identify the fault of No. 1 front pump and identify the water inrush in the mine. The control unit sends control instructions to the valve unit, the lower pump room unit and the upper pump room unit according to the comparison results, the fault identification results and the mine water inrush identification results, and controls them according to the intelligent drainage strategy; among them, there are three diversion wells, and there is a one-to-one correspondence between the three diversion wells, the three pre-pumps and the three pre-motors, and each pre-pump and the corresponding pre-motors are installed at the bottom of the corresponding diversion well; there is a one-to-one correspondence between the three main drainage pumps and the three main drainage motors; there are also three channels, and there is a one-to-one correspondence between the three channels and the three pre-pumps.

[0007] The lower pump room unit is located above the three water diversion wells; the upper pump room unit is located 4 to 5 meters above the mine tunnel; the pipeline system is distributed in the lower pump room unit, the upper pump room unit, the three water diversion wells, and the three channels; the valve unit is installed on the system pipeline; the detection unit is installed on the upper pump room unit, the lower pump room unit, the three water diversion wells, and the system pipeline.

[0008] In summary, the double pump room positive pressure water feeding intelligent drainage system of the present invention includes three sets of positive pressure water feeding drainage pump groups: No. 1 front motor, No. 1 front pump, No. 1 main drainage motor, No. 1 main drainage pump and corresponding pipelines constitute No. 1 drainage pump group, No. 2 front motor, No. 2 front pump, No. 2 main drainage motor, No. 2 main drainage pump and corresponding pipelines constitute No. 2 drainage pump group, No. 3 front motor, No. 3 front pump, No. 3 main drainage motor, No. 3 main drainage pump and corresponding pipelines, electric valves constitute No. 3 drainage pump group; wherein, No. 1 drainage pump group is the working pump group, No. 2 drainage pump group is the standby pump group, and No. 3 drainage pump group is the maintenance pump group. In practical applications, when water inrush occurs in the mine and the amount of water is large, the three pump groups can drain water at the same time. When each set of drainage pumps is draining water, the front pump, under the action of the front motor, feeds water to the corresponding main drainage pump at positive pressure, instead of relying on the main drainage pump to drain water by negative pressure suction. This can increase the height of the upper pump room and the head of the main drainage pump, greatly reducing the risk of flooding of the main drainage pump and other equipment that is easily damaged by flooding. At the same time, the increase in the height of the main drainage pump also reduces the cavitation damage it suffers, and increases the service life of the main drainage pump. In addition, when a flood accident occurs in the coal mine due to sudden water inrush, the height of the upper pump room rises, making the tunnel and the lower pump room a buffer water storage space. The main drainage pump in the upper pump room can work for a long time while maintaining the maximum drainage capacity, so as to reduce the amount of water in the tunnel, provide rescue time for drainage rescue, and enable underground personnel to evacuate in time. In the double pump room positive pressure water feeding intelligent drainage system described in the present invention, the controller switches and controls the drainage pump group according to the intelligent drainage strategy for different water gushing conditions and equipment failure conditions in the mine. The drainage control has high accuracy, which greatly improves the emergency drainage response speed and efficiency, and further improves the safety and reliability of mine operations.

[0009] In order to achieve the above object, the second technical solution proposed by the present invention is: A method for measuring water inflow of any of the above-mentioned double pump room positive pressure water feeding intelligent drainage systems specifically comprises the following steps: Step 1: Use the water chasing level calibration method to calibrate the water level of the water tank when the mine is normally gushing water to obtain the water storage volume of the water tank corresponding to each calibration scale.

[0010] Step 2: Obtain the total drainage volume of the double pump room positive pressure water feeding intelligent drainage system ;in, express The speed of the front motor; express The displacement of the front pump per unit time; Indicates the drainage time; is a natural number, and .

[0011] Step 3: According to step 1 and step 2, obtain the normal total water inflow of the mine ;in, It represents the normal water inflow of the mine per unit time, and ; Indicates passing The change in water storage in the water tank after drainage over time. In summary, in the water inflow measurement method for the above-mentioned double pump room positive pressure water feeding intelligent drainage system, the water tank capacity is difficult to determine because the shape of the water tank is irregular and is affected by the silt deposited in the mine; therefore, the water inflow measurement method of the present invention first adopts the water chasing liquid level calibration method to mark the water tank capacity in sections. After the water tank capacity is marked, the total drainage volume of the double pump room positive pressure water feeding intelligent drainage system is obtained, and the total water inflow volume of the mine is obtained according to the total drainage volume. It can be seen that due to the segmented marking of the water tank capacity, the water tank capacity or the change of the water tank capacity can be accurately obtained, which greatly improves the measurement accuracy of the water inflow volume. When a water disaster occurs in the coal mine due to sudden water inrush, drainage control can be performed according to the total water inflow volume of the mine, so the water inflow measurement method of the present invention has the characteristics of high precision. Furthermore, this greatly improves the emergency drainage response speed and emergency drainage efficiency, and improves the safety and reliability of mine operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall composition structure of a single pump set of the double pump room positive pressure water feeding intelligent drainage system described in the present invention.

[0013] Figure 2 This is a schematic diagram of the distribution structure of the double pump room piping system and valve unit of the present invention.

[0014] Figure 3 This is a top view of the bottom pump room described in the present invention.

[0015] Figure 4 This is a top view of the upper pump room described in the present invention.

[0016] Figure 5 The figure is a schematic diagram of the overall flow of the water inflow measurement method of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall composition structure of a single pump set of the double pump room positive pressure water feeding intelligent drainage system described in the present invention. Figure 2This is a schematic diagram of the distribution structure of the double pump room piping system and valve unit of the present invention. Figure 3 This is a top view of the bottom pump room described in the present invention. Figure 4 FIG. 1 is a top view of the upper pump room of the present invention. Figure 1~Figure 4 As shown, the double pump room positive pressure water feeding intelligent drainage system of the present invention comprises: connecting the water distribution well 6 through the water distribution well cover 10, connecting the upper pump room unit through the channel, and feeding the mine water sucked by the three front pumps to the lower pump room unit of the upper pump room unit through the pipeline system under the drive of the three front motors according to the control instructions sent by the control unit; and installing three main drainage pumps and three main drainage motors, and feeding the mine water sucked by the three front pumps to the lower pump room unit of the upper pump room unit through the pipeline system under the drive of the three main drainage motors according to the control instructions sent by the control unit. The mine water from the lower pump room unit is discharged to the upper pump room unit outside the mine by three main drainage pumps; it is used to connect the three pre-pumps in the lower pump room unit, the lower pump room unit with the upper pump room unit, and the upper pump room unit with the pipeline system outside the mine; it is used to control the valve unit of the pipeline system to conduct, shut off or flow size according to the control instruction of the control unit; it is used to transmit the detected real-time water level of the No. 1 water distribution well, the real-time water level of the No. 2 water distribution well, the real-time water level of the No. 3 water distribution well, the real-time water level of the lower pump room, and the pipeline system to the outside of the mine. The drainage water flow is sent to the detection unit of the control unit; it is used to pre-set the warning water level of the No. 1 water distribution well, the warning water level of the No. 2 water distribution well, the warning water level of the No. 3 water distribution well, and the warning water level of the lower pump room, and compare the real-time water level of the No. 1 water distribution well, the real-time water level of the No. 2 water distribution well, the real-time water level of the No. 3 water distribution well, and the real-time water level of the lower pump room sent by the detection unit with the warning water level of the No. 1 water distribution well, the warning water level of the No. 2 water distribution well, the warning water level of the No. 3 water distribution well, and the warning water level of the lower pump room; it is also used to identify the fault of the No. 1 front pump and to prevent water inrush in the mine. Identify; according to the comparison results, fault identification results, and mine water inrush identification results, send control instructions to the valve unit, the lower pump room unit, and the upper pump room unit, and control them according to the intelligent drainage strategy; among them, there are three water diversion wells, and there is a one-to-one correspondence between the three water diversion wells, the three pre-pumps, and the three pre-motors. Each pre-pump and the corresponding pre-motors are installed at the bottom of the corresponding water diversion well; there is a one-to-one correspondence between the three main drainage pumps and the three main drainage motors; there are also three channels, and there is a one-to-one correspondence between the three channels and the three pre-pumps; The lower pump room unit is located above the three water diversion wells; the upper pump room unit is located 4 to 5 meters above the mine tunnel; the pipeline system is distributed in the lower pump room unit, the upper pump room unit, the three water diversion wells, and the three channels; the valve unit is installed on the system pipeline; the detection unit is installed on the upper pump room unit, the lower pump room unit, the three water diversion wells, and the system pipeline.

[0019] like Figure 1As shown, in actual work, in addition to the above-mentioned components, the mine structure also includes an entry horizontal tunnel 1, a sedimentation tank 2, a retaining wall 3 and a water tank 4. After the mine water enters the entry horizontal tunnel 1, it continues to enter the sedimentation tank 2 for sedimentation of water-coal slurry particles. A retaining wall 3 is provided at the bottom of the sedimentation tank 2 near the water tank 4. The retaining wall 3 has a certain blocking effect on the mine water flowing into the sedimentation tank 2. When the mine water volume is relatively large and the mine water depth exceeds the retaining wall 3, the mine water passes over the retaining wall and enters the water tank 4. The three water diversion wells 6 are all connected to the water tank 4.

[0020] In summary, the double pump room positive pressure water feeding intelligent drainage system of the present invention includes three sets of positive pressure water feeding drainage pump groups: No. 1 front motor, No. 1 front pump, No. 1 main drainage motor, No. 1 main drainage pump and corresponding pipelines constitute No. 1 drainage pump group, No. 2 front motor, No. 2 front pump, No. 2 main drainage motor, No. 2 main drainage pump and corresponding pipelines constitute No. 2 drainage pump group, No. 3 front motor, No. 3 front pump, No. 3 main drainage motor, No. 3 main drainage pump and corresponding pipelines, electric valves constitute No. 3 drainage pump group; wherein, No. 1 drainage pump group is the working pump group, No. 2 drainage pump group is the standby pump group, and No. 3 drainage pump group is the maintenance pump group. In practical applications, when a mine has a large amount of water inrush, the three pump groups can drain water at the same time. When each set of drainage pumps is draining water, the front pump, under the action of the front motor, feeds water to the corresponding main drainage pump at positive pressure, instead of relying on the main drainage pump to drain water by negative pressure suction. This can increase the height of the upper pump room and the head of the main drainage pump, greatly reducing the risk of flooding of the main drainage pump and other equipment that is easily damaged by flooding. At the same time, the increase in the height of the main drainage pump also reduces the cavitation damage it suffers, and increases the service life of the main drainage pump. In addition, when a flood accident occurs in the coal mine due to sudden water inrush, the height of the upper pump room rises, making the tunnel and the lower pump room a buffer water storage space. The main drainage pump in the upper pump room can work for a long time while maintaining the maximum drainage capacity, so as to reduce the amount of water in the tunnel, provide rescue time for drainage rescue, and enable underground personnel to evacuate in time. In the double pump room positive pressure water feeding intelligent drainage system described in the present invention, the controller switches and controls the drainage pump group according to the intelligent drainage strategy for different water gushing conditions and equipment failure conditions in the mine. The drainage control has high accuracy, which greatly improves the emergency drainage response speed and efficiency, and further improves the safety and reliability of mine operations.

[0021] In the system of the present invention, Figure 3As shown, the lower pump room unit includes: a lower pump room 5 for connecting three water diversion wells 6 respectively through three water diversion well covers 10 and connecting the upper pump room unit through three channels; a No. 1 front motor, a No. 2 front motor, and a No. 3 front motor for starting, running, and stopping according to the control command sent by the control unit; a No. 1 front pump 7, a No. 2 front pump 26, and a No. 3 front pump 27 for correspondingly absorbing mine water under the drive of the No. 1 front motor, the No. 2 front motor, and the No. 3 front motor, and feeding the mine water to the upper pump room unit through the pipeline system; wherein the height of the lower pump room is consistent with the height of the mine roadway; The three pre-pumps are connected through a pipeline system, and a valve unit is also installed on the pipeline system.

[0022] In the system of the present invention, the No. 1 pre-pump 7, the No. 2 pre-pump 26, and the No. 3 pre-pump 27 are all mixed flow submersible pumps. Mixed flow pumps have the characteristics of large flow, medium head, simple start and stop control, and can be used directly underwater. In practical applications, mixed flow pumps can cope with the situation where there are many coal-water sludge particles and turbid water in mines.

[0023] In the system of the present invention, Figure 4 As shown, the upper pump room unit includes: an upper pump room 12 for connecting the lower pump room 5 through three channel covers and three channels in sequence, and providing installation space for installing three main drainage pumps and three main drainage motors; a No. 1 main drainage motor, a No. 2 main drainage motor, and a No. 3 main drainage motor for starting, running, and stopping according to the control command sent by the control unit; and a No. 1 main drainage motor, a No. 2 main drainage motor, and a No. 3 main drainage motor, respectively driven by the No. 1 main drainage motor, the No. 2 main drainage motor, and the No. 3 main drainage motor, respectively, through the pipeline system to absorb feed water from the No. 1 pre-pump 7, the No. 2 pre-pump 26, and the No. 3 pre-pump 27, and discharge the absorbed feed water to the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25 outside the mine through the pipeline system; wherein, the No. 1 pre-pump 7, the No. 2 pre-pump 26, and the No. 3 pre-pump 27 correspond one-to-one to the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25; and the three channel covers correspond one-to-one to the three channels; Valve units and detection units are installed on the corresponding pipeline systems connecting the No. 1 pre-pump 7, No. 2 pre-pump 26, No. 3 pre-pump 27 and the No. 1 main drainage pump 14, No. 2 main drainage pump 24, No. 3 main drainage pump 25, and on the pipeline systems connecting the No. 1 main drainage pump 14, No. 2 main drainage pump 24, No. 3 main drainage pump 25 to the outside of the mine.

[0024] In the system of the present invention, the first main drainage pump 14, the second main drainage pump 24 and the third main drainage pump 25 are all horizontal centrifugal pumps.

[0025] In the system of the present invention, Figure 2As shown, the pipeline system includes: three water suction pipes 19, three drainage pipes 20, two connecting pipes 34, and two branch pipes 39; wherein the three water suction pipes 19 correspond to the No. 1 pre-pump 7, the No. 2 pre-pump 26, and the No. 3 pre-pump 27 respectively, the three water suction pipes 19 also correspond to the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25 respectively, and the three drainage pipes correspond to the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25 respectively; One end of each water suction pipeline 19 is connected to the corresponding front pump outlet, and the other end of each water suction pipeline 19 passes through the corresponding water diversion well 6, the corresponding water diversion well cover 10, the lower pump room 5, the corresponding passage, enters the upper pump room 12, and is connected to the corresponding main drainage pump water suction port; each water suction pipeline 19 is fixed to the corresponding water diversion well wall, the lower pump room bottom 5, and the corresponding passage wall. One end of each drainage pipe 20 is connected to the corresponding main drainage pump outlet, and the other end of each drainage pipe 20 is connected to the outside of the mine.

[0026] At the bottom of the lower pump room, three water suction pipes 19 passing through three water diversion wells 6 are connected by two connecting pipes 34; the two water suction pipes 19 corresponding to the water diversion well 6 corresponding to the No. 1 front motor or the No. 1 front pump and the water diversion well 6 corresponding to the No. 3 front motor or the No. 3 front pump are also respectively connected to one end of a branch pipe 39, and the one water suction pipe 19 corresponding to the water diversion well 6 corresponding to the No. 2 front motor or the No. 2 front pump has no branch pipe 39; the other ends of the two branch pipes 39 are respectively connected to the water suction port of the No. 1 main drainage pump and the water suction port of the No. 3 main drainage pump.

[0027] In the system of the present invention, the detection unit includes: three flow meters 15 for detecting the water flow of the three-way drainage pipe 20 respectively; three first liquid level sensors No. 1, No. 2 and No. 3 for measuring the real-time water level of the first water well, the real-time water level of the second water well and the real-time water level of the third water well corresponding to the three water wells; a second liquid level sensor for measuring the real-time water level of the lower pump room; wherein, The three flow meters 15 are respectively installed on the outlet sides of the corresponding main drainage pump No. 1 14, main drainage pump No. 2 24, and main drainage pump No. 3 25; the first liquid level sensor No. 1, the first liquid level sensor No. 2, and the first liquid level sensor No. 3 are respectively installed on the well walls of the corresponding water diversion wells 16; the second liquid level sensor is installed on the wall of the lower pump room 5.

[0028] In the system of the present invention, each liquid level sensor is a submersible liquid level device, which includes a measuring part 8, a circuit part and a display part 13. The measuring part 8 is installed at the bottom of the water diversion well 6 and is consistent with the ground height of the water tank 4. The circuit part is a dedicated pipeline, which is fixed to the wall of the water diversion well 6, the bottom of the lower pump room 5 and the channel between the lower pump room 5 and the upper pump room 12. The display part is fixed on the wall of the upper pump room 12.

[0029] In actual applications, the detection unit also includes: three water inlet pressure gauges 17 for respectively detecting the water pressure of the water inlet of the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25; three drainage pressure gauges 18 for respectively detecting the water pressure of the water outlet of the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25. The three water inlet pressure gauges 17 and the three drainage pressure gauges 18 are used to send the respectively measured water pressures of the water inlet and the water outlet of the three main drainage pumps to the control unit. The three water inlet pressure gauges 17 are respectively installed on the water inlet side of the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25. The three drainage pressure gauges 18 are respectively installed on the corresponding water outlet side of the No. 1 main drainage pump 14, the No. 2 main drainage pump 24, and the No. 3 main drainage pump 25.

[0030] In the system of the present invention, the valve unit includes: a No. 1 lower stop valve to a No. 3 lower stop valve 9, 32, 33 for automatically adjusting the water flow rate under the control instruction sent by the controller; a No. 1 upper stop valve to a No. 3 upper stop valve 16, 35, 36 for automatically adjusting the water flow rate under the control instruction sent by the controller; a No. 1 connecting valve to a No. 4 connecting valve 28~31 for automatically adjusting the water flow rate under the control instruction sent by the controller; wherein each lower stop valve, each upper stop valve, and each connecting valve are electric gate valves; The No. 1 to No. 3 lower stop valves 9, 32, and 33 are respectively installed on the three-way water suction pipeline 19, and are respectively located between the intersection of the corresponding water suction pipeline 19 and the connecting pipe 34 to the corresponding pre-pump; the No. 1 to No. 3 lower stop valves 9, 32, and 33 are also respectively located on the inner side of the manhole cover 10 of the corresponding water diversion well 6.

[0031] The No. 1 to No. 3 upper stop valves 16, 35, and 36 are also installed on the three-way water suction pipeline 19, and are located near the water suction port side of the corresponding main drainage pump.

[0032] The No. 1 connecting valve 28 and the No. 2 connecting valve 29 are respectively installed on the two connecting pipes 34 , and the No. 3 connecting valve 30 and the No. 4 connecting valve 31 are respectively installed on the two branch pipes 39 .

[0033] In practical applications, the structure in which the electric gate valve is opened and closed according to the control instruction is prior art and will not be described in detail here.

[0034] In actual application, a filter screen 11 for filtering mine water is installed on each of the two branch pipes 39 .

[0035] In the system of the present invention, the controller includes: a preset unit, a comparison unit, a fault identification unit, a water inrush identification unit, a processing unit, and a driving unit; wherein the driving unit includes: a first pre-driver to a third pre-driver, a first main drainage driver to a third main drainage driver; The preset unit is used to pre-set the warning water level of the No. 1 water diversion well, the warning water level of the No. 2 water diversion well, the warning water level of the No. 3 water diversion well, and the warning water level of the lower pump room.

[0036] The fault identification unit is used to perform fault diagnosis on the No. 1 pre-pump: when the No. 1 pre-pump fails, a fault signal is sent to the processing unit; when the No. 1 pre-pump is not faulty, a normal signal is sent to the processing unit.

[0037] In the system of the present invention, fault diagnosis is a prior art and will not be described in detail here.

[0038] The water inrush identification unit is used to identify water inrush in the mine: when there is no water inrush in the mine, a no water inrush signal is sent to the processing unit; when there is water inrush in the mine, a water inrush signal is sent to the processing unit.

[0039] In the system of the present invention, water inrush identification is a prior art and will not be described in detail here.

[0040] A comparison unit is used to compare the real-time water level of the No. 1 water diversion well sent by the detection unit with the warning water level of the No. 1 water diversion well read from the preset unit, or to compare the real-time water level of the No. 2 water diversion well sent by the detection unit with the warning water level of the No. 2 water diversion well read from the preset unit, or to compare the real-time water level of the No. 3 water diversion well sent by the detection unit with the warning water level of the No. 3 water diversion well read from the preset unit: when the real-time water level of the No. 1 water diversion well is equal to or greater than the warning water level of the No. 1 water diversion well, or when the real-time water level of the No. 2 water diversion well is equal to or greater than the warning water level of the No. 2 water diversion well, or when the real-time water level of the No. 3 water diversion well is equal to or greater than the warning water level of the No. 3 water diversion well, a first warning signal is sent to the processing unit; and to compare the real-time water level of the lower pump room sent by the detection unit with the warning water level of the lower pump room read from the preset unit: when the real-time water level of the lower pump room is equal to or greater than the warning water level of the lower pump room, a second warning signal is sent to the processor.

[0041] The processing unit is used to send corresponding control instructions to the driving unit and the valve unit according to the normal signal or fault signal sent by the fault identification unit, the no-water-inrush signal or the water-inrush signal sent by the water-inrush identification unit, and the first warning signal or the second warning signal sent by the comparison unit in accordance with the intelligent drainage strategy.

[0042] In practical applications, the controller is a programmable logic controller, a single-chip microcomputer, a digital signal processor, etc.

[0043] In practical applications, the communication between the controller and the detection unit can be wired communication or wireless communication. Here, wired communication or wireless communication is a prior art and will not be described in detail here.

[0044] In the system of the present invention, the intelligent drainage strategy specifically includes the following steps: Step A, when the No. 1 pre-pump has no faults and there is no water inrush in the mine, that is, when the mine is drained normally, according to the first operation instruction sent by the processing unit, the first pre-driver drives the No. 1 pre-motor to operate, the first main drainage driver drives the No. 1 main drainage motor to operate, the No. 1 pre-motor and the No. 1 main drainage motor drive the No. 1 pre-pump and the No. 1 main drainage pump to operate respectively; according to the first opening instruction sent by the processing unit, the No. 1 lower stop valve 9 and the No. 1 upper stop valve 16 are opened; at the same time, according to the second stop instruction sent by the processing unit, the second pre-driver and the second main drainage driver both stop working, and the No. 2 pre-motor and the No. 2 main drainage driver stop working. The water motor remains in a stopped state; according to the third stop instruction sent by the processing unit, the third pre-driver and the third main drainage driver both stop working, and the No. 3 pre-motor and the No. 3 main drainage motor also remain in a stopped state; according to the second closing instruction sent by the processing unit, the No. 2 lower stop valve 32 and the No. 2 upper stop valve 35 remain in a closed state, and according to the third closing instruction sent by the processing unit, the No. 3 lower stop valve 33 and the No. 3 upper stop valve 36 remain in a closed state; according to the fourth closing instruction sent by the processing unit, the No. 1 connecting valve 28, the No. 2 connecting valve 29, the No. 3 connecting valve 30, and the No. 4 connecting valve 31 all remain in a closed state.

[0045] Step B. When the No. 1 pre-pump fails and there is no water inrush in the mine, according to the fourth stop instruction sent by the processing unit, the first pre-driver stops working, and the No. 1 pre-motor and the No. 1 pre-pump both stop running; at the same time, according to the fourth running instruction sent by the processing unit, the second pre-driver drives the No. 2 pre-motor to run, and the No. 2 pre-motor drives the No. 2 pre-pump to run; according to the fifth closing instruction sent by the processing unit, the No. 1 lower stop valve 9 is closed; according to the sixth opening instruction sent by the processing unit, the No. 2 lower stop valve 32 is opened; according to the seventh opening instruction sent by the processing unit, the No. 1 connecting valve 28 is opened.

[0046] Step C, when the No. 1 pre-pump has no faults, the mine has water inrush, and the real-time water level of the No. 1 water diversion well is equal to or greater than the warning water level of the No. 1 water diversion well, or the real-time water level of the No. 2 water diversion well is equal to or greater than the warning water level of the No. 2 water diversion well, or the real-time water level of the No. 3 water diversion well is equal to or greater than the warning water level of the No. 3 water diversion well, according to the first operation instruction, the second operation instruction, and the third operation instruction sent by the processing unit, the first pre-driver drives the No. 1 pre-motor to operate, the first main drainage driver drives the No. 1 main drainage motor to operate, the second pre-driver drives the No. 2 pre-motor to operate, the second main drainage driver drives the No. 2 main drainage motor to operate, the third pre-driver drives the No. 3 pre-motor to operate, and the third main drainage driver drives the No. 3 main drainage motor to operate. The drainage motor is running, the No. 1 front motor drives the No. 1 front pump, the No. 1 main drainage motor drives the No. 1 main drainage pump, the No. 2 front motor drives the No. 2 front pump, the No. 2 main drainage motor drives the No. 2 main drainage pump, the No. 3 front motor drives the No. 3 front pump, and the No. 3 main drainage motor drives the No. 3 main drainage pump all operate accordingly; at the same time, according to the first opening instruction, the second opening instruction, and the third opening instruction sent by the processing unit, the No. 1 lower stop valve and the No. 1 upper stop valve, the No. 2 lower stop valve and the No. 2 upper stop valve, and the No. 3 lower stop valve and the No. 3 upper stop valve are all opened accordingly; according to the fourth closing instruction sent by the processing unit, the No. 1 connecting valve 28, the No. 2 connecting valve 29, the No. 3 connecting valve 30, and the No. 4 connecting valve 31 all remain closed.

[0047] Step D, when the No. 1 pre-pump has no faults, the mine has water inrush, and the real-time water level in the lower pump room is equal to or greater than the warning water level in the lower pump room, according to the second operation instruction sent by the processing unit, the second pre-driver drives the No. 2 pre-motor to operate, the second main drainage driver drives the No. 2 main drainage motor to operate, the No. 2 pre-motor drives the No. 2 pre-pump, and the No. 2 main drainage motor drives the No. 2 main drainage pump to keep operating; according to the fifth stop instruction and the sixth stop instruction sent by the processing unit, the first pre-driver and the third pre-driver stop working, the No. 1 pre-motor and the No. 3 pre-motor stop operating accordingly, and the No. 1 pre-pump and the No. 3 pre-pump also stop operating accordingly; according to the fifth operation instruction and the sixth stop instruction sent by the processing unit, the No. 1 pre-driver and the No. 3 pre-driver stop working accordingly, and the No. 1 pre-pump and the No. 3 pre-pump also stop operating accordingly; according to the fifth operation instruction The first main drainage driver drives the No. 1 main drainage motor to operate, the third main drainage driver drives the No. 3 main drainage motor to operate, and the No. 1 main drainage pump and the No. 3 main drainage pump also operate accordingly; according to the sixth closing instruction sent by the processing unit, the No. 1 lower stop valve and the No. 3 lower stop valve are both closed; according to the fifth opening instruction sent by the processing unit, the No. 2 lower stop valve, the No. 1 upper stop valve, the No. 2 upper stop valve, and the No. 3 upper stop valve are all opened; according to the seventh closing instruction sent by the processing unit, the No. 1 connecting valve 28 and the No. 2 connecting valve 29 are both closed; according to the sixth opening instruction sent by the processing unit, the No. 3 connecting valve 30 and the No. 4 connecting valve 31 are both opened.

[0048] Figure 5 FIG. 1 is a schematic diagram of the overall flow of the water inflow measurement method of the present invention. Figure 5 As shown, the water inflow measurement method for the double pump room positive pressure water feeding intelligent drainage system of the present invention specifically includes the following steps: Step 1: Use the water chasing level calibration method to calibrate the water level of the water tank when the mine is normally gushing water to obtain the water storage volume of the water tank corresponding to each calibration scale.

[0049] Step 2: Obtain the total drainage volume of the double pump room positive pressure water feeding intelligent drainage system ;in, express The speed of the front motor; express The displacement of the front pump per unit time; Indicates the drainage time; is a natural number, and .

[0050] Step 3: According to step 1 and step 2, obtain the total water inflow of the mine ;in, represents the water inflow of the mine per unit time, and ; Indicates passing Change in water storage in the water tank after drainage.

[0051] In summary, in the water inflow measurement method for the above-mentioned double pump room positive pressure water feeding intelligent drainage system described in the present invention, since the shape of the water tank is irregular and is affected by the silt deposited in the mine, the size of the water tank capacity is difficult to determine; therefore, the water inflow measurement method described in the present invention first adopts the water chasing liquid level calibration method to mark the water tank capacity in sections. After the water tank capacity is marked, the total drainage volume of the double pump room positive pressure water feeding intelligent drainage system is obtained, and the total water inflow volume of the mine is obtained based on the total drainage volume. It can be seen that due to the segmented marking of the water tank capacity, the water tank capacity or the change of the water tank capacity can be accurately obtained, which greatly improves the measurement accuracy of the water inflow volume. When a water disaster occurs in the coal mine due to sudden water inrush, drainage control can be carried out according to the total water inflow volume of the mine, so the water inflow measurement method of the present invention has the characteristics of high precision. Furthermore, this greatly improves the emergency drainage response speed and emergency drainage efficiency, and improves the safety and reliability of mine operations.

[0052] In the water inflow measurement method of the present invention, the step 1 specifically includes the following steps: Step 11: Adjust the speed of each front motor so that the liquid level of the water tank remains unchanged. ;in, It indicates the normal water inflow of a mine per unit time.

[0053] Step 12, reduce the speed of each of the front motors, or only operate a single set of drainage pumps consisting of the corresponding front motor, front pump, main drainage motor, and main drainage pump to reduce the drainage volume until the real-time water level of each diversion well reaches the diversion well warning water level. At this time, the water tank is full of water.

[0054] Step 13: Divide the total height of the water level in the water tank into N and calibrate them in order from bottom to top. The water level corresponding to the scale is ;in, , are all natural numbers, and ;Right now, Indicates that the water tank is full of water.

[0055] Step 14: Increase the speed of each front motor, or increase the operation of the drainage pump group to increase the drainage volume to chase water, so that the water level height of the water tank Gradually descend, and chase water until there is no water in the water tank; at this time, meet ; Indicates the water storage capacity of the water tank.

[0056] Step 15: According to step 14, the calibrated Water level height Corresponding water storage capacity ;in, Indicates the water volume in the water tank from The scale drops to The time spent on the scale.

[0057] In practical applications, when the water level in the water tank is The scale drops to When the scale is ticked, the water storage change ;in, Indicates that the water level in the water tank is The scale drops to The time it takes for a tick to Indicates Water level height h ( ) corresponds to the water storage capacity of the water tank, is a natural number, ,and .

[0058] In practical applications, the water level calibration of the water tank capacity should be carried out once a month during the rainy season and once every two months during the non-rainy season to ensure that the water storage capacity of the water tank can be accurately measured under various conditions.

[0059] In practical applications, the water inflow measurement method of the present invention is applicable to both normal water inflow and water inrush conditions.

[0060] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double pump room positive pressure water feeding intelligent drainage system, characterized in that: The intelligent drainage system includes: a device for connecting the water diversion well through the water diversion well cover and the upper pump room unit through the channel, and according to the control instructions sent by the control unit, the mine water sucked by the three front pumps is fed to the lower pump room unit of the upper pump room unit through the pipeline system under the drive of the three front motors; and three main drainage pumps and three main drainage motors are installed, and according to the control instructions sent by the control unit, the mine water from the lower pump room unit is fed to the lower pump room unit through the pipeline system under the drive of the three main drainage motors. The main drainage pump is used to discharge water to the upper pump room unit outside the mine; it is used to connect the three pre-pumps in the lower pump room unit, connect the lower pump room unit with the upper pump room unit, and connect the upper pump room unit with the pipeline system outside the mine; it is used to control the on / off or flow rate of the pipeline system according to the control instructions of the control unit; it is used to send the detected real-time water level of the No. 1 water distribution well, the real-time water level of the No. 2 water distribution well, the real-time water level of the No. 3 water distribution well, the real-time water level of the lower pump room, and the water flow of the pipeline system to the outside of the mine to the control unit. The detection unit of the control unit is used to pre-set the warning water level of the No. 1 water distribution well, the warning water level of the No. 2 water distribution well, the warning water level of the No. 3 water distribution well, and the warning water level of the lower pump room, and compare the real-time water level of the No. 1 water distribution well, the real-time water level of the No. 2 water distribution well, the real-time water level of the No. 3 water distribution well, and the real-time water level of the lower pump room sent by the detection unit with the warning water level of the No. 1 water distribution well, the warning water level of the No. 2 water distribution well, the warning water level of the No. 3 water distribution well, and the warning water level of the lower pump room; it is also used to identify the fault of the No. 1 front pump and identify the water inrush in the mine; According to the comparison results, fault identification results, and mine water inrush identification results, a control unit sends control instructions to the valve unit, the lower pump room unit, and the upper pump room unit and controls them according to the intelligent drainage strategy; among them, there are three water diversion wells, and there is a one-to-one correspondence between the three water diversion wells, the three pre-pumps, and the three pre-motor. Each pre-pump and the corresponding pre-motor are installed at the bottom of the corresponding water diversion well; there is a one-to-one correspondence between the three main drainage pumps and the three main drainage motors; there are also three channels, and there is a one-to-one correspondence between the three channels and the three pre-pumps; The lower pump room unit is located above the three water diversion wells; the upper pump room unit is located 4 to 5 meters above the mine tunnel; the pipeline system is distributed in the lower pump room unit, the upper pump room unit, the three water diversion wells, and the three channels; the valve unit is installed on the system pipeline; the detection unit is installed on the upper pump room unit, the lower pump room unit, the three water diversion wells, and the system pipeline.

2. The double pump room positive pressure water feeding intelligent drainage system according to claim 1 is characterized in that: The lower pump room unit comprises: a lower pump room for connecting three water diversion wells through three water diversion well covers respectively and connecting the upper pump room unit through three channels; a No. 1 front motor, a No. 2 front motor and a No. 3 front motor for starting, running and stopping according to the control command sent by the control unit; a No. 1 front pump, a No. 2 front pump and a No. 3 front pump for sucking mine water respectively driven by the No. 1 front motor, the No. 2 front motor and the No. 3 front motor, and feeding the mine water to the No. 1 front pump, the No. 2 front pump and the No. 3 front pump of the upper pump room unit through the pipeline system; wherein the height of the lower pump room is consistent with the height of the mine roadway; The three pre-pumps are connected through a pipeline system, and a valve unit is also installed on the pipeline system.

3. The double pump room positive pressure water feeding intelligent drainage system according to claim 2 is characterized in that: The No. 1 pre-pump, the No. 2 pre-pump and the No. 3 pre-pump are all mixed flow submersible pumps.

4. The double pump room positive pressure water feeding intelligent drainage system according to claim 3 is characterized in that: The upper pump room unit comprises: an upper pump room for connecting the lower pump room through three channel covers and three channels in sequence and providing installation space for installing three main drainage pumps and three main drainage motors; a No. 1 main drainage motor, a No. 2 main drainage motor and a No. 3 main drainage motor for starting, running and stopping according to the control instructions sent by the control unit; and a No. 1 main drainage motor, a No. 2 main drainage motor and a No. 3 main drainage motor for respectively absorbing feed water from the No. 1 pre-pump, the No. 2 pre-pump and the No. 3 pre-pump through the pipeline system under the drive of the No. 1 main drainage motor, the No. 2 main drainage motor and the No. 3 main drainage motor, and discharging the absorbed feed water to the No. 1 main drainage pump, the No. 2 main drainage pump and the No. 3 main drainage pump outside the mine through the pipeline system; wherein the No. 1 pre-pump, the No. 2 pre-pump and the No. 3 pre-pump correspond one-to-one to the No. 1 main drainage pump, the No. 2 main drainage pump and the No. 3 main drainage pump; and the three channel covers correspond one-to-one to the three channels; The valve unit and the detection unit are installed on the corresponding pipeline system connecting the No. 1 pre-pump, No. 2 pre-pump, No. 3 pre-pump and the No. 1 main drainage pump, No. 2 main drainage pump, No. 3 main drainage pump, and the pipeline system connecting the No. 1 main drainage pump, No. 2 main drainage pump, No. 3 main drainage pump outside the mine.

5. The double pump room positive pressure water feeding intelligent drainage system according to claim 4 is characterized in that: The No. 1 main drainage pump, the No. 2 main drainage pump, and the No. 3 main drainage pump are all horizontal centrifugal pumps.

6. The double pump room positive pressure water feeding intelligent drainage system according to claim 4 is characterized in that: The pipeline system includes: three water suction pipes, three drainage pipes, two connecting pipes, and two branch pipes; wherein the three water suction pipes correspond to the No. 1 pre-pump, the No. 2 pre-pump, and the No. 3 pre-pump, respectively, the three water suction pipes also correspond to the No. 1 main drainage pump, the No. 2 main drainage pump, and the No. 3 main drainage pump, respectively, and the three drainage pipes correspond to the No. 1 main drainage pump, the No. 2 main drainage pump, and the No. 3 main drainage pump, respectively; One end of each water suction pipeline is connected to the corresponding front pump drainage port, and the other end of each water suction pipeline passes through the corresponding water diversion well, the corresponding water diversion well cover, the lower pump room, the corresponding passage, enters the upper pump room, and is connected to the corresponding main drainage pump water suction port; each water suction pipeline is fixed to the corresponding water diversion well wall, the bottom of the lower pump room, and the corresponding passage wall; One end of each drainage pipe is connected to the corresponding main drainage pump outlet, and the other end of each drainage pipe is connected to the outside of the mine; At the bottom of the lower pump room, three water suction pipelines passing through three water diversion wells are connected by two connecting pipes; the two water suction pipelines corresponding to the water diversion well corresponding to the No. 1 front motor or the No. 1 front pump and the water diversion well corresponding to the No. 3 front motor or the No. 3 front pump are also respectively connected to one end of a branch pipe, and the one water suction pipeline corresponding to the water diversion well corresponding to the No. 2 front motor or the No. 2 front pump has no branch pipe; the other ends of the two branch pipes are respectively connected to the water suction port of the No. 1 main drainage pump and the water suction port of the No. 3 main drainage pump.

7. The double pump room positive pressure water feeding intelligent drainage system according to claim 6 is characterized in that: The detection unit includes: three flow meters for detecting the water flow of the three drainage pipes; three first liquid level sensors No. 1, No. 2 and No. 3 for measuring the real-time water level of the first water well, the real-time water level of the second water well and the real-time water level of the third water well corresponding to the three water wells; a second liquid level sensor for measuring the real-time water level of the lower pump room; wherein, The first liquid level sensor No. 1, the first liquid level sensor No. 2 and the first liquid level sensor No. 3 are respectively installed on the well walls of the corresponding water diversion wells; the second liquid level sensor is installed on the wall of the lower pump room.

8. The double pump room positive pressure water feeding intelligent drainage system according to claim 6 is characterized in that: The valve unit includes: lower stop valve No. 1 to lower stop valve No. 3 for automatically adjusting the water flow rate under the control instruction sent by the controller; upper stop valve No. 1 to upper stop valve No. 3 for automatically adjusting the water flow rate under the control instruction sent by the controller; connecting valve No. 1 to connecting valve No. 4 for automatically adjusting the water flow rate under the control instruction sent by the controller; wherein each lower stop valve, each upper stop valve, and each connecting valve are electric gate valves; The No. 1 lower stop valve to the No. 3 lower stop valve are installed on the three-way water suction pipelines, and are respectively located between the intersection of the corresponding water suction pipeline and the connecting pipe to the corresponding front pump; the No. 1 lower stop valve to the No. 3 lower stop valve are also located on the inner side of the corresponding water distribution well cover; The No. 1 upper stop valve to the No. 3 upper stop valve are also installed on the three-way water suction pipelines and are located near the water suction port side of the corresponding main drainage pump; The No. 1 connecting valve and the No. 2 connecting valve are respectively installed on the two connecting pipes, and the No. 3 connecting valve and the No. 4 connecting valve are respectively installed on the two branch pipes.

9. The double pump room positive pressure water feeding intelligent drainage system according to claim 6 is characterized in that: A filter screen for filtering mine water is also installed on each of the two branch pipes.

10. The double pump room positive pressure water feeding intelligent drainage system according to claim 8 is characterized in that: The controller includes: a preset unit, a comparison unit, a fault identification unit, a water inrush identification unit, a processing unit, and a driving unit; wherein the driving unit includes: a first pre-driver to a third pre-driver, and a first main drainage driver to a third main drainage driver; The preset unit is used to preset the warning water level of the No. 1 water diversion well, the warning water level of the No. 2 water diversion well, the warning water level of the No. 3 water diversion well, and the warning water level of the lower pump room; The fault identification unit is used to diagnose the fault of the No. 1 pre-pump: when the No. 1 pre-pump fails, a fault signal is sent to the processing unit; when the No. 1 pre-pump is not faulty, a normal signal is sent to the processing unit; The water inrush identification unit is used to identify water inrush in the mine: when there is no water inrush in the mine, a no water inrush signal is sent to the processing unit; when there is water inrush in the mine, a water inrush signal is sent to the processing unit; A comparison unit, used for comparing the real-time water level of the No. 1 water diversion well sent by the detection unit with the warning water level of the No. 1 water diversion well read from the preset unit, or comparing the real-time water level of the No. 2 water diversion well sent by the detection unit with the warning water level of the No. 2 water diversion well read from the preset unit, or comparing the real-time water level of the No. 3 water diversion well sent by the detection unit with the warning water level of the No. 3 water diversion well read from the preset unit: when the real-time water level of the No. 1 water diversion well is equal to or greater than the warning water level of the No. 1 water diversion well, or when the real-time water level of the No. 2 water diversion well is equal to or greater than the warning water level of the No. 2 water diversion well, or when the real-time water level of the No. 3 water diversion well is equal to or greater than the warning water level of the No. 3 water diversion well, a first warning signal is sent to the processing unit; used for comparing the real-time water level of the lower pump room sent by the detection unit with the warning water level of the lower pump room read from the preset unit: when the real-time water level of the lower pump room is equal to or greater than the warning water level of the lower pump room, a second warning signal is sent to the processor; The processing unit is used to send corresponding control instructions to the driving unit and the valve unit according to the normal signal or fault signal sent by the fault identification unit, the no-water-inrush signal or the water-inrush signal sent by the water-inrush identification unit, and the first warning signal or the second warning signal sent by the comparison unit in accordance with the intelligent drainage strategy.

11. The double pump room positive pressure water feeding intelligent drainage system according to claim 10 is characterized in that: The intelligent drainage strategy specifically includes the following steps: Step A, when the No. 1 pre-pump has no faults and there is no water inrush in the mine, that is, when the mine is drained normally, according to the first operation instruction sent by the processing unit, the first pre-driver drives the No. 1 pre-motor to operate, the first main drainage driver drives the No. 1 main drainage motor to operate, and the No. 1 pre-motor and the No. 1 main drainage motor drive the No. 1 pre-pump and the No. 1 main drainage pump to operate respectively; according to the first opening instruction sent by the processing unit, the No. 1 lower stop valve and the No. 1 upper stop valve are opened; at the same time, according to the second stop instruction sent by the processing unit, the second pre-driver and the second main drainage driver both stop working, and the No. 2 pre-pump The motor and the No. 2 main drainage motor remain in a stopped state; according to the third stop instruction sent by the processing unit, the third front driver and the third main drainage driver all stop working, and the No. 3 front motor and the No. 3 main drainage motor also remain in a stopped state; according to the second closing instruction sent by the processing unit, the No. 2 lower stop valve and the No. 2 upper stop valve remain in a closed state, and according to the third closing instruction sent by the processing unit, the No. 3 lower stop valve and the No. 3 upper stop valve remain in a closed state; according to the fourth closing instruction sent by the processing unit, the No. 1 connecting valve, the No. 2 connecting valve, the No. 3 connecting valve, and the No. 4 connecting valve all remain in a closed state; Step B, when the No. 1 pre-pump fails and there is no water inrush in the mine, according to the fourth stop instruction sent by the processing unit, the first pre-driver stops working, and the No. 1 pre-motor and the No. 1 pre-pump both stop running; at the same time, according to the fourth running instruction sent by the processing unit, the second pre-driver drives the No. 2 pre-motor to run, and the No. 2 pre-motor drives the No. 2 pre-pump to run; according to the fifth closing instruction sent by the processing unit, the No. 1 lower stop valve is closed; according to the sixth opening instruction sent by the processing unit, the No. 2 lower stop valve is opened; according to the seventh opening instruction sent by the processing unit, the No. 1 connecting valve is opened; Step C, when the No. 1 pre-pump has no faults, the mine has water inrush, and the real-time water level of the No. 1 water diversion well is equal to or greater than the warning water level of the No. 1 water diversion well, or the real-time water level of the No. 2 water diversion well is equal to or greater than the warning water level of the No. 2 water diversion well, or the real-time water level of the No. 3 water diversion well is equal to or greater than the warning water level of the No. 3 water diversion well, according to the first operation instruction, the second operation instruction, and the third operation instruction sent by the processing unit, the first pre-driver drives the No. 1 pre-motor to operate, the first main drainage driver drives the No. 1 main drainage motor to operate, the second pre-driver drives the No. 2 pre-motor to operate, the second main drainage driver drives the No. 2 main drainage motor to operate, the third pre-driver drives the No. 3 pre-motor to operate, and the third main drainage driver drives the No. 4 pre-motor to operate. The No. 3 main drainage motor is started to operate, the No. 1 front motor drives the No. 1 front pump, the No. 1 main drainage motor drives the No. 1 main drainage pump, the No. 2 front motor drives the No. 2 front pump, the No. 2 main drainage motor drives the No. 2 main drainage pump, the No. 3 front motor drives the No. 3 front pump, and the No. 3 main drainage motor drives the No. 3 main drainage pump to operate accordingly; at the same time, according to the first opening instruction, the second opening instruction, and the third opening instruction sent by the processing unit, the No. 1 lower stop valve and the No. 1 upper stop valve, the No. 2 lower stop valve and the No. 2 upper stop valve, and the No. 3 lower stop valve and the No. 3 upper stop valve are all opened accordingly; according to the fourth closing instruction sent by the processing unit, the No. 1 connecting valve, the No. 2 connecting valve, the No. 3 connecting valve, and the No. 4 connecting valve are all kept closed; Step D, when the No. 1 pre-pump has no faults, the mine has water inrush, and the real-time water level in the lower pump room is equal to or greater than the warning water level in the lower pump room, according to the second operation instruction sent by the processing unit, the second pre-driver drives the No. 2 pre-motor to operate, the second main drainage driver drives the No. 2 main drainage motor to operate, the No. 2 pre-motor drives the No. 2 pre-pump, and the No. 2 main drainage motor drives the No. 2 main drainage pump to keep operating; according to the fifth stop instruction and the sixth stop instruction sent by the processing unit, the first pre-driver and the third pre-driver stop working, the No. 1 pre-motor and the No. 3 pre-motor stop operating accordingly, and the No. 1 pre-pump and the No. 3 pre-pump also stop operating accordingly; According to the fifth operation instruction and the sixth operation instruction, the first main drainage driver drives the No. 1 main drainage motor to operate, the third main drainage driver drives the No. 3 main drainage motor to operate, and the No. 1 main drainage pump and the No. 3 main drainage pump also operate accordingly; according to the sixth closing instruction sent by the processing unit, the No. 1 lower stop valve and the No. 3 lower stop valve are both closed; according to the fifth opening instruction sent by the processing unit, the No. 2 lower stop valve, the No. 1 upper stop valve, the No. 2 upper stop valve, and the No. 3 upper stop valve are all opened; according to the seventh closing instruction sent by the processing unit, the No. 1 connecting valve and the No. 2 connecting valve are both closed; according to the sixth opening instruction sent by the processing unit, the No. 3 connecting valve and the No. 4 connecting valve are both opened.

12. A method for measuring water inflow of a double pump room positive pressure water feeding intelligent drainage system according to any one of claims 1 to 11, comprising the following steps: Step 1: Use the water chasing level calibration method to calibrate the water level of the water tank when the mine is in normal water inflow, so as to obtain the water storage volume of the water tank corresponding to each calibration scale; Step 2: Obtain the total drainage volume of the double pump room positive pressure water feeding intelligent drainage system ;in, express The speed of the front motor; express The displacement of the front pump per unit time; Indicates the drainage time; is a natural number, and ; Step 3: According to step 1 and step 2, obtain the total water inflow of the mine ;in, represents the water inflow of the mine per unit time, and ; Indicates passing Change in water storage in the water tank after drainage over time.

13. The water inflow measurement method according to claim 12, characterized in that: The step 1 specifically includes the following steps: Step 11: Adjust the speed of each front motor so that the liquid level of the water tank remains unchanged. ;in, It indicates the normal water inflow of the mine per unit time; Step 12, reducing the speed of each of the front motors, or operating only a single set of drainage pumps consisting of the corresponding front motor, front pump, main drainage motor, and main drainage pump, to reduce the drainage volume, until the real-time water level of each water diversion well reaches the water diversion well warning water level, at which time, the water tank is full of water; Step 13: Divide the total height of the water level in the water tank into N and calibrate them in order from bottom to top. The water level corresponding to the scale is ;in, , are all natural numbers, and ;Right now, Indicates that the water tank is full of water; Step 14: Increase the speed of each front motor, or increase the operation of the drainage pump group to increase the drainage volume to chase water, so that the water level height of the water tank Gradually descend, and chase water until there is no water in the water tank; at this time, meet ; Indicates the amount of water stored in the water tank; Step 15: According to step 14, the calibrated Water level height Corresponding water storage capacity ;in, Indicates the water volume in the water tank from The scale drops to The time spent on the scale.

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