CN114526109A - Mine ventilation parameter real-time monitoring system and monitoring method thereof - Google Patents
Mine ventilation parameter real-time monitoring system and monitoring method thereof Download PDFInfo
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- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
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Abstract
The invention discloses a mine ventilation parameter real-time monitoring system and a monitoring method thereof, wherein the system comprises a sensor, an optical cable, a communication cable, a network cable, a monitoring substation, a power supply, a mine intrinsic safety type ring network switch, a ground ring network switch, a server and a mine ground monitoring center; the sensor is connected with the monitoring substation through a communication cable; the monitoring substation is connected with the mining intrinsic safety type ring network switch through an optical cable; the monitoring substations are connected through optical cables; the mining intrinsic safety type ring network switches are connected through optical cables; the monitoring substation and the mine intrinsic safety type ring network switch are respectively connected with a power supply; the power supply is connected with a power taking point of the underground substation through a communication cable; the mining intrinsic safety type ring network switch is connected with the ground ring network switch through an optical cable; the ground ring network switches are connected by optical cables; the ground ring network switch is connected with the server through a network cable; the server is connected with the coal mine ground monitoring center through a network cable. The invention realizes the digitization and the intellectualization of the monitoring of the mine ventilation parameters.
Description
Technical Field
The invention relates to the technical field of mine ventilation, in particular to a mine ventilation parameter real-time monitoring system and a monitoring method thereof.
Background
Ventilation is the basis for ensuring safe and efficient production of coal mines, and the most important parameters of mine ventilation are wind speed, wind volume and ventilation resistance. At present, the measurement means of the wind speed, the wind volume and the ventilation resistance of a coal mine are mainly completed manually, time and labor are wasted, the efficiency is low, and the obtained data has certain delay.
The regulation of coal mine safety regulations: a wind measuring system must be established for the mine, and at least 1 time of comprehensive wind measurement is carried out every 10 days; wind speed sensors are arranged at wind measuring stations of each mining area, one wing return airway and the main return airway; the wind cave of the main ventilator should be provided with a pressure sensor; a water column gauge (pressure gauge) must be installed in the main ventilator room. Therefore, the ventilation resistance measuring period specified in the coal mine safety regulation is too long, and the places requiring real-time monitoring of the wind speed and the wind volume are few, and the ventilation parameter monitoring means adopted by the coal mine according to the regulation can not meet the requirements of digital and intelligent construction of the current mine.
Based on this, it is especially necessary to provide a real-time monitoring system for ventilation parameters such as wind speed, wind volume and ventilation resistance in the whole mine.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a real-time monitoring system and a monitoring method for mine ventilation parameters, which solve the problems of low efficiency and delay of the conventional mine ventilation parameter measuring mode and realize the digitization and the intellectualization of mine ventilation parameter monitoring.
The mine ventilation parameter real-time monitoring system comprises a sensor, an optical cable, a communication cable, a network cable, a monitoring substation, a power supply, a mine intrinsic safety type ring network switch, a ground ring network switch, a server and a coal mine ground monitoring center, wherein the sensor is arranged on the mine ventilation parameter real-time monitoring center; the sensor is connected with an electrical interface of the monitoring substation through the communication cable; the monitoring substation is connected with the mining intrinsic safety type ring network switch through the optical cable; the monitoring substations are connected with each other through the optical cables; the mining intrinsic safety type ring network switch is connected with the mining intrinsic safety type ring network switch through the optical cable; the monitoring substation and the mining intrinsic safety type ring network switch are respectively connected with the power supply, and the power supply supplies power to the monitoring substation and the mining intrinsic safety type ring network switch; the power supply is connected with a power taking point of an underground substation through the communication cable, and alternating current is adopted to supply power to the power supply; the mining intrinsic safety type ring network switch is connected with the ground ring network switch through the optical cable; the ground ring network switch is connected with the ground ring network switch by adopting the optical cable; the ground ring network switch is connected with the server through the network cable; the server is connected with the coal mine ground monitoring center through the network cable.
The method for monitoring the mine ventilation parameters in real time according to the embodiment of the invention comprises the following specific steps: step 1, installing a wind speed sensor and a differential pressure sensor in an underground roadway needing to measure ventilation parameters, wherein the wind speed sensor is used for measuring the wind speed in mine ventilation parameters, and the wind speed is the wind speed of a wind measuring station; the differential pressure sensor is used for measuring ventilation resistance in mine ventilation parameters; step 2, the wind speed sensor uploads the measured data to a server through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, the server calculates the data measured by the wind speed sensor to obtain an average wind speed, and the wind volume of a tunnel where the wind speed sensor is located can be obtained based on the average wind speed multiplied by the sectional area of the installation position of the wind speed sensor; the differential pressure sensor uploads measured data to the server through the monitoring substation, the mining intrinsic safety type ring network switch and the ground ring network switch, and the server calculates the data measured by the differential pressure sensor to obtain the static pressure difference and the bit pressure difference.
The method for monitoring the mine ventilation parameters in real time according to the embodiment of the invention comprises the following specific steps: step 1, installing a wind speed sensor and a multi-parameter sensor in an underground tunnel needing to measure ventilation parameters, wherein the wind speed sensor is used for measuring the wind speed in mine ventilation parameters, and the wind speed comprises the wind speed of a wind measuring station and the wind speed of each single tunnel on a maximum ventilation resistance route; step 2, the wind speed sensor uploads the measured data to a server through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, the server calculates the data measured by the wind speed sensor to obtain an average wind speed, and the wind volume of a tunnel where the wind speed sensor is located can be obtained based on the average wind speed multiplied by the sectional area of the installation position of the wind speed sensor; and 3, uploading the measured data to a server by the multi-parameter sensor through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, calculating the data measured by the multi-parameter sensor by the server to obtain static pressure difference, measuring dynamic pressure difference and position pressure difference by matching with the data of the wind speed sensor and a ground database, and finally obtaining ventilation resistance.
According to the mine ventilation parameter real-time monitoring method provided by the embodiment of the invention, when the underground roadway is a regular roadway, the wind speed in the mine ventilation parameter is measured by using the wind speed sensor, and the ventilation resistance in the mine ventilation parameter is measured by using the differential pressure sensor; when the underground tunnel is an irregular tunnel, the wind speed sensor is used for measuring the wind speed in the mine ventilation parameters, the multi-parameter sensor is used for measuring the static pressure, the temperature and the relative humidity at the intersection point of each single tunnel on the path of the maximum ventilation resistance of the mine, the difference value of the static pressures of two intersection points of each single tunnel is the static pressure difference, and then the mine ventilation resistance is measured by matching the wind speed of each single tunnel on the path of the maximum ventilation resistance with the data in the ground database.
The invention has the advantages that firstly, the problem of limitation of the current mine wind speed and wind volume measuring area is solved, and real-time wind measurement in the whole mine range is realized; secondly, the real-time online monitoring of the mine ventilation resistance can be realized, a proper scheme can be selected according to the specific situation of the roadway, and the problems of delay and low efficiency of the traditional manual measurement of the mine ventilation resistance data are solved.
Further specifically, in the above technical solution, the sensor is formed by combining a wind speed sensor and a differential pressure sensor which are arranged in the downhole regular roadway and used in cooperation with each other.
Further specifically, in the technical scheme, the sensor is formed by combining a wind speed sensor and a multi-parameter sensor which are arranged in an underground irregular roadway and are matched with each other.
Further specifically, in the above technical solution, the sensor, the monitoring substation, the power supply, and the mining intrinsically safe ring network switch are disposed downhole.
Further specifically, in the above technical solution, the ground ring network switch and the server are disposed in the coal mine ground monitoring center.
Further specifically, in the above technical solution, the optical cable is a mining flame-retardant single-mode optical cable.
Further specifically, in the above technical solution, the communication cable is a mining flame-retardant communication cable.
Further specifically, in the technical scheme, the power supply adopts a mining explosion-proof and intrinsically safe multi-path power supply.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the construction of a real-time monitoring system for mine ventilation parameters in accordance with the present invention;
FIG. 2 is a schematic diagram of a first embodiment of the present invention;
FIG. 3 is a layout diagram of the first embodiment of the present invention;
FIG. 4 is a schematic diagram of a second embodiment of the present invention;
FIG. 5 is a layout diagram of a second embodiment of the present invention;
fig. 6 is a schematic diagram of a third embodiment of the present invention.
FIG. 7 is a first schematic view of an irregular roadway;
fig. 8 is a schematic view of an irregular roadway two.
The reference numbers in the drawings are: 1. a differential pressure sensor; 2. a hose; 3. a pitot tube; 4. a multi-parameter sensor; 5. a wind speed sensor; 6. a tunnel mouth.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the real-time monitoring system for mine ventilation parameters comprises a sensor, an optical cable, a communication cable, a network cable, a monitoring substation, a power supply, a mine intrinsic safety type ring network switch, a ground ring network switch, a server and a coal mine ground monitoring center. The ventilation parameters comprise three items of wind speed, wind quantity and ventilation resistance.
The sensors comprise a wind speed sensor, a differential pressure sensor and a multi-parameter sensor, and the sensors used are different according to different ventilation parameter measuring modes. The sensor can be formed by combining a wind speed sensor and a differential pressure sensor which are arranged in the underground regular roadway and are matched with each other. Of course, the sensors can also be formed by combining wind speed sensors and multi-parameter sensors which are arranged in underground irregular roadways and are matched with each other for use, the multi-parameter sensors can only measure static pressure, temperature and relative humidity at the intersection points of each single roadway, the difference value of the static pressure at the two intersection points of each single roadway is static pressure difference, the multi-parameter sensors are matched with the wind speed sensors in each single roadway to measure wind speed and data such as installation height of the multi-parameter sensors in a ground database, dynamic pressure difference and position pressure difference are calculated, ventilation resistance of each single roadway is further measured, and ventilation resistance of each single roadway is accumulated to obtain mine ventilation resistance.
The sensor, the monitoring substation, the power supply and the mining intrinsic safety type ring network switch are arranged underground. The ground looped network switch and the server are arranged in a coal mine ground monitoring center. The optical cable adopts a mine flame-retardant single-mode optical cable. The communication cable is a mining flame-retardant communication cable. The power supply adopts a mining explosion-proof and intrinsic safety type multi-path power supply, and it needs to be explained that the power supply for supplying power to the monitoring substation and the mining intrinsic safety type ring network switch is a mining explosion-proof and intrinsic safety type multi-path power supply, but the type and the power supply parameters are different, and the power supply belongs to special equipment.
The sensor is connected with an electrical interface of the monitoring substation through a mine flame-retardant communication cable; the monitoring substation is connected with the mine intrinsic safety type ring network switch through a mine flame-retardant single-mode optical cable; the monitoring substations are connected with each other through the mining flame-retardant single-mode optical cable; the mining intrinsic safety type ring network switch is connected with the mining intrinsic safety type ring network switch through a mining flame-retardant single-mode optical cable; the mining explosion-proof and intrinsic safety type multi-path power supply supplies power to the monitoring substation and the mining intrinsic safety type ring network switch; the mining explosion-proof and intrinsically safe multi-path power supply is connected with a power taking point of an underground substation through a mining flame-retardant communication cable, and alternating current is adopted to supply power to the mining explosion-proof and intrinsically safe multi-path power supply; the mine intrinsic safety type ring network switch is connected with the ground ring network switch through a mine flame-retardant single-mode optical cable; the ground ring network switch is connected with the ground ring network switch by a mining flame-retardant single-mode optical cable; the ground ring network switch is connected with the server through a network cable; the server is connected with the coal mine ground monitoring center through a network cable.
The monitoring method of the mine ventilation parameter real-time monitoring system adopts the following wind speed and wind quantity monitoring modes: the wind speed sensor is installed in a roadway needing to measure wind speed, measured data are uploaded to the server through the monitoring substation, the mining intrinsic safety type ring network switch and the ground ring network switch by the wind speed sensor, the server calculates the data measured by the wind speed sensor to obtain average wind speed, and the wind volume of the roadway where the wind speed sensor is located can be obtained based on the average wind speed multiplied by the sectional area of the installation position of the wind speed sensor. And the server uploads the wind speed and wind volume data obtained by calculation of each tunnel to a coal mine ground monitoring center, and the coal mine ground monitoring center displays and checks the wind speed value and the wind volume value of each tunnel in real time. The sectional area of the roadway at the position of the wind speed sensor is obtained by manual measurement when the wind speed sensor is installed, and sectional area data of the roadway is recorded into an upper computer installed in a server in advance for subsequent calculation. The wind speed sensor is arranged on a point position representing the average wind speed of the roadway, and measured data are uploaded to the server. It should be noted that the wind speed sensor measures the instantaneous wind speed of a certain point in the tunnel, but not the average wind speed of the tunnel, according to the theory of "average wind speed circle", the wind speed of the center point of the tunnel is the largest, and the wind speed of the wall of the tunnel is the smallest, so that on the connecting line from the center point of the tunnel to the wall of the tunnel, the wind speed value of a certain point is inevitably equal to the average wind speed of the tunnel, and the points of the wind speed equal to the average wind speed on countless connecting lines from the center point of the tunnel to the walls of the surrounding tunnels are connected to form the "average wind speed circle", so that the wind speed sensor is installed on the average wind speed circle, and then the instantaneous wind speed measured by the wind speed sensor is the average wind speed theoretically, but in fact, the wind flow in the tunnel belongs to turbulence, one of the characteristics of turbulence is that the wind speed has turbulence pulsation, that is the instantaneous wind speed of a certain point fluctuates around the average wind speed of the point, the server further fits the measured wind speed sensor data to calculate the average wind speed.
According to different measuring principles and sensor selection modes, the adopted ventilation resistance monitoring modes are different.
It should be noted that: the maximum ventilation resistance route consists of a plurality of roadways, and cross points can appear at the positions where the roadways are crossed with other roadways of the mine; in addition, for convenience of explanation, the junction of the suction type ventilation air inlet well head, the pressure type ventilation air return well head and the wind cave and the main ventilator is also processed at the cross point. The lane between two intersections is defined as a single lane.
Example 1:
referring to fig. 2 and 3, the method for monitoring mine ventilation parameters in real time, the differential pressure sensor is matched with the wind speed sensor, and the method comprises the following specific steps:
And monitoring the ventilation resistance of the mine in real time by using the differential pressure sensor 1. For each single roadway, a differential pressure sensor 1 is arranged at the middle position of the roadway, a rubber pipe connector of the differential pressure sensor 1 is connected with two rubber pipes 2, the two rubber pipes 2 are respectively connected with a pitot tube 3, the static pressure difference and the bit pressure difference of each single roadway, which are measured by the differential pressure sensor 1, are uploaded to a monitoring substation through a communication cable, the underground monitoring substation uploads each accessed sensor data signal to a mining intrinsic safety type ring network switch through an optical cable, the mining intrinsic safety type ring network switch uploads each accessed data signal of the monitoring substation to a ground ring network switch through the optical cable, the ground ring network switch uploads each accessed data signal of the mining intrinsic safety type ring network switch to a server through the optical cable, and the server performs unified calculation on differential pressure sensor data, and sending the calculation result to a coal mine ground monitoring center through an optical cable, wherein the formula for calculating the sensor data by the server is as follows:
wherein h represents mine ventilation resistance; h isiShowing the ventilation resistance of the ith roadway.
Ventilation resistance h of ith roadwayiThe calculation formula of (2) is as follows:
hi＝Pi+Ei
wherein, PiRepresenting the static pressure difference of the ith roadway; eiThe bit pressure difference of the ith roadway is represented and directly measured by a differential pressure sensor, the dynamic pressure difference can be ignored due to the fact that the air quantity and the air speed in each single roadway are not changed greatly, the ventilation resistance of each single roadway can be represented by the formula, and the ventilation resistance of the mine can be represented after the ventilation resistance is accumulated. The differential pressure sensor 1 directly measures the static pressure difference and the differential pressure.
Only one differential pressure sensor 1 needs to be arranged in each single roadway in the embodiment 1, the cost is low, the measurement error is relatively smaller than that of a multi-parameter sensor, but the applicability is poor, and the method is generally suitable for roadways with regular roadway sections.
Example 2:
referring to fig. 4 and 5, the mine ventilation parameter real-time monitoring method, the multi-parameter sensor and the wind speed sensor are matched, and the method comprises the following specific steps:
and 3, uploading the measured data to a server by the multi-parameter sensor through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, calculating the data measured by the multi-parameter sensor by the server to obtain static pressure difference, and measuring dynamic pressure difference and position pressure difference by matching with data of a wind speed sensor and a ground database to finally obtain ventilation resistance.
It should be noted that, because the ventilation resistance measured by the multi-parameter sensor scheme includes static pressure difference, differential pressure and dynamic pressure difference, the wind speed is needed, the wind speed measured by the wind speed sensor at this moment is used for calculating the wind rate in addition to indicating the wind speed of the roadway, and finally the dynamic pressure difference and the differential pressure are calculated by matching with the difference value of the static pressures measured by two adjacent multi-parameter sensors and the elevation of the installation positions of the multi-parameter sensors, and finally the static pressure difference, the differential pressure and the dynamic pressure difference are added together by the system to obtain the ventilation resistance of the mine.
And monitoring the ventilation resistance of the mine in real time by using the multi-parameter sensor 4 and the wind speed sensor. The multi-parameter sensor 4 is arranged at the intersection point of each single roadway on the path of the maximum ventilation resistance, the wind speed sensor 5 is arranged on the roadway side of the single roadway at a distance of at least 10m from any one roadway opening 6, the multi-parameter sensor 4 measures the absolute pressure and the temperature, relative humidity and tunnel mouth wind speed measured by a wind speed sensor 5 are uploaded to a monitoring substation through a cable, the underground monitoring substation uploads data signals of all accessed sensors to a mining intrinsic safety type ring network switch through an optical cable, the mining intrinsic safety type ring network switch uploads the data signals of all accessed substations to a ground ring network switch through the optical cable, the ground ring network switch uploads the data signals of all accessed mining intrinsic safety type ring network switches to a server through the optical cable, and the server performs unified calculation on sensor data and then sends calculation results to a ground monitoring center through the optical cable. The formula for the server to calculate the sensor data is as follows:
wherein h represents mine ventilation resistance; h isiShowing the ventilation resistance of the ith roadway.
Ventilation resistance h of ith roadwayiThe calculation formula of (2) is as follows:
hi＝Pi+Ei+hvi
wherein, PiThe static pressure difference of the ith roadway is represented and is determined by the difference of the static pressure values measured by the multi-parameter sensors 4 at two intersection points of each single roadway; eiThe bit pressure difference of the ith roadway is represented and obtained by calculating the temperature, the relative humidity and the static pressure of each intersection measured by the multi-parameter sensor 4 and combining table look-up data such as saturated water vapor partial pressure at the same temperature in a server database; h isviThe dynamic pressure difference of the ith roadway is represented and obtained through calculation of data such as average wind speed measured by a wind speed sensor 5 at the position of each single roadway entrance 6, temperature and humidity measured by a multi-parameter sensor 4, water vapor partial pressure at the same temperature obtained through table lookup in a server and the like. It should be noted that the static pressure measured by the multi-parameter sensor is subtracted from the static pressure measured by two adjacent multi-parameter sensors to obtain the static pressure difference.
The embodiment 2 has strong applicability, is particularly suitable for vertical shafts and roadways with irregular sections due to reasons of roadway confining pressure, support and the like, but has higher cost because two multi-parameter sensors and one wind speed sensor are arranged in each single roadway.
Example 3:
according to the mine ventilation parameter real-time monitoring method, when an underground roadway is a regular roadway, a wind speed sensor is used for measuring the wind speed in the mine ventilation parameter, and a differential pressure sensor is used for measuring the ventilation resistance in the mine ventilation parameter; when the underground tunnel is an irregular tunnel, the wind speed sensor is used for measuring the wind speed in the mine ventilation parameters, the multi-parameter sensor is used for measuring the static pressure, the temperature and the relative humidity at the intersection point of each single tunnel on the path of the maximum ventilation resistance of the mine, the difference value of the static pressures of two intersection points of each single tunnel is the static pressure difference, and then the mine ventilation resistance is measured by matching the wind speed of each single tunnel on the path of the maximum ventilation resistance with the data in the ground database. It should be noted that, although the mode of monitoring mine ventilation parameters in real time by matching the differential pressure sensor with the wind speed sensor is very simple, and the number of sensors is small, the dynamic pressure difference is small after all, and each roadway cannot be very regular, so that the applicability of the mode is limited; in addition, although the mode that the multi-parameter sensor cooperates with the wind speed sensor to monitor the mine ventilation parameters in real time is better in applicability, the mode is more complicated to operate and higher in cost. Therefore, the practical situation needs to be integrated, and a proper mode is selected at a proper place; under the condition that an underground roadway is regular, monitoring mine ventilation parameters in real time by utilizing a differential pressure sensor and a wind speed sensor; referring to fig. 7 and 8, under the condition that the underground roadway is irregular, the multi-parameter sensor is matched with the wind speed sensor to monitor mine ventilation parameters in real time.
Mine ventilation resistance is monitored in real time based on a multi-parameter sensor, a wind speed sensor and a differential pressure sensor. On the maximum ventilation resistance line, for a single roadway, if the section of the roadway is regular, namely the wind speed in the roadway is not changed greatly, a differential pressure sensor is selected to monitor the ventilation resistance of the roadway; if the section of the single roadway is irregular, namely the wind speed in the same roadway obviously changes, the ventilation resistance of the roadway is monitored by selecting the multi-parameter sensor and matching the wind speed sensor. After the stability of the air quantity and the air speed of each single roadway of the route with the maximum ventilation resistance is judged, a proper sensor is selected to form a ventilation resistance implementation online monitoring system. And the server records the sensor types selected by each single roadway, selects a corresponding calculation formula, and then accumulates the ventilation resistance of each single roadway on the path of the maximum ventilation resistance to obtain the ventilation resistance of the mine.
The structural features of this embodiment 3 are the same as those of embodiments 1 and 2, and specifically, the installation method, the system connection method, and the ventilation resistance measurement principle of each single tunnel are the same as those of embodiment 1 or 2 according to the type of the sensor selected.
By adopting the three mine ventilation resistance measuring modes, the function of monitoring the mine ventilation resistance in real time on line can be realized, the problems that the traditional manual measurement of the ventilation resistance is time-consuming, labor-consuming, low in efficiency and delayed in data delay are solved, the safety and high-efficiency mine ventilation is guaranteed, and the development of the mine ventilation resistance measurement to the direction of digitization and intellectualization is promoted.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (11)
1. A mine ventilation parameter real-time monitoring system is characterized in that: the system comprises a sensor, an optical cable, a communication cable, a network cable, a monitoring substation, a power supply, a mining intrinsic safety type ring network switch, a ground ring network switch, a server and a coal mine ground monitoring center;
the sensor is connected with an electrical interface of the monitoring substation through the communication cable;
the monitoring substation is connected with the mining intrinsic safety type ring network switch through the optical cable;
the monitoring substations are connected with each other through the optical cables;
the mining intrinsic safety type ring network switch is connected with the mining intrinsic safety type ring network switch through the optical cable;
the monitoring substation and the mining intrinsic safety type looped network switch are respectively connected with the power supply, and the power supply supplies power to the monitoring substation and the mining intrinsic safety type looped network switch;
the power supply is connected with an electricity taking point of an underground substation through the communication cable, and alternating current is adopted to supply power to the power supply;
the mining intrinsic safety type ring network switch is connected with the ground ring network switch through the optical cable;
the ground ring network switch is connected with the ground ring network switch by adopting the optical cable;
the ground ring network switch is connected with the server through the network cable;
the server is connected with the coal mine ground monitoring center through the network cable.
2. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the sensor is formed by combining a wind speed sensor and a differential pressure sensor which are arranged in the underground regular roadway and are matched with each other.
3. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the sensor is formed by combining a wind speed sensor and a multi-parameter sensor which are arranged in an underground irregular roadway and are matched with each other.
4. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the sensor, the monitoring substation, the power supply and the mining intrinsic safety type ring network switch are arranged underground.
5. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the ground looped network switch and the server are arranged in the coal mine ground monitoring center.
6. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the optical cable adopts a mining flame-retardant single-mode optical cable.
7. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the communication cable is a mining flame-retardant communication cable.
8. The mine ventilation parameter real-time monitoring system of claim 1, wherein: the power supply adopts a mining explosion-proof and intrinsically safe multi-path power supply.
9. The monitoring method of the mine ventilation parameter real-time monitoring system according to any one of claim 1, characterized by comprising the following specific steps:
step 1, installing a wind speed sensor and a differential pressure sensor in an underground roadway needing to measure ventilation parameters, wherein the wind speed sensor is used for measuring the wind speed in mine ventilation parameters, and the wind speed is the wind speed of a wind measuring station; the differential pressure sensor is used for measuring ventilation resistance in mine ventilation parameters;
step 2, the wind speed sensor uploads the measured data to a server through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, the server calculates the data measured by the wind speed sensor to obtain an average wind speed, and the wind volume of a tunnel where the wind speed sensor is located can be obtained based on the average wind speed multiplied by the sectional area of the installation position of the wind speed sensor; the differential pressure sensor uploads measured data to the server through the monitoring substation, the mining intrinsic safety type ring network switch and the ground ring network switch, and the server calculates the data measured by the differential pressure sensor to obtain the static pressure difference and the bit pressure difference.
10. The monitoring method of the mine ventilation parameter real-time monitoring system according to any one of claim 1, characterized by comprising the following specific steps:
step 1, installing a wind speed sensor and a multi-parameter sensor in an underground tunnel needing to measure ventilation parameters, wherein the wind speed sensor is used for measuring the wind speed in mine ventilation parameters, and the wind speed comprises the wind speed of a wind measuring station and the wind speed of each single tunnel on a maximum ventilation resistance route;
step 2, the wind speed sensor uploads the measured data to a server through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, the server calculates the data measured by the wind speed sensor to obtain an average wind speed, and the wind volume of a tunnel where the wind speed sensor is located can be obtained based on the average wind speed multiplied by the sectional area of the installation position of the wind speed sensor;
and 3, uploading the measured data to a server by the multi-parameter sensor through a monitoring substation, a mining intrinsic safety type ring network switch and a ground ring network switch, calculating the data measured by the multi-parameter sensor by the server to obtain static pressure difference, measuring dynamic pressure difference and position pressure difference by matching with the data of the wind speed sensor and a ground database, and finally obtaining ventilation resistance.
11. A monitoring method of the mine ventilation parameter real-time monitoring system as claimed in any one of claim 1, characterized in that:
when the underground roadway is a regular roadway, measuring the wind speed in the mine ventilation parameter by using a wind speed sensor, and measuring the ventilation resistance in the mine ventilation parameter by using a differential pressure sensor;
when the underground tunnel is an irregular tunnel, the wind speed sensor is used for measuring the wind speed in the mine ventilation parameters, the multi-parameter sensor is used for measuring the static pressure, the temperature and the relative humidity at the intersection point of each single tunnel on the path of the maximum ventilation resistance of the mine, the difference value of the static pressures of two intersection points of each single tunnel is the static pressure difference, and then the mine ventilation resistance is measured by matching the wind speed of each single tunnel on the path of the maximum ventilation resistance with the data in the ground database.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116220817A (en) * | 2023-05-08 | 2023-06-06 | 淄博隆腾测控设备有限公司 | Comprehensive monitoring system for mine closed area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116220817A (en) * | 2023-05-08 | 2023-06-06 | 淄博隆腾测控设备有限公司 | Comprehensive monitoring system for mine closed area |
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