SU896241A1 - Method of monitoring and controlling the process of airing mine working having aerodynamic connection with blowout-hazardous zones - Google Patents

Description

(54) METHOD OF CONTROL AND MANAGEMENT OF THE MODE OF VENTILATION OF THE MINING OPERATIONS HAVING AERODYNAMIC RELATIONSHIP WITH GAS SAFETY

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The invention relates to the mining industry and can be used in mines that are aerodynamically associated with gas-hazardous zones to eliminate the ingress of harmful gases into the existing mine workings.

There is a method of ventilation of mine workings that have aerodynamic communication with gas-hazardous zones in the suction circuit, which consists in eliminating leaks by applying sealing coatings on particularly dangerous areas of the mine workings 1,

The disadvantage of this method is its complexity and high cost.

There is also known a method of controlling and controlling the ventilation mode, which includes measuring the pressure along the ventilation jet and creating a pressure difference between the hazardous area and the ventilated mine output by means of a device for measuring pressures.

nor, retaining fan and throttle device L2 J.

The disadvantage of this method is that it does not allow to ensure the complete elimination of harmful gases in a ventilated mine development due to the inability to maintain a given value of the pressure difference between the gas-hazardous area and the ventilated mine output in case of disturbances in the mine ventilation network.

The purpose of the Invention is to reduce the inflow of harmful gases into a ventilated mine production by providing automatic control of the magnitude of the pressure difference between the gas-hazardous area and the ventilated mine production in case of disturbances in the mine ventilation network.

Claims (2)

The goal is achieved by measuring the pressure directly in the gas-hazardous zone and in the ventilated mine working by installing probes of the device for measuring the pressure B of the ventilated mine working and in the wells previously drilled from the ventilated mine working to the gas hazardous area, determine the pressure difference between the gas-dangerous zone and ventilated mine workings, compare it with a predetermined value, and when the differential pressure deviates from a predetermined value, automatic control is performed The throttle device by supplying an electrical signal to it from a pressure measuring device, moreover, when the differential pressure deviates from a predetermined value, automatic control of the operation of the support fan by sending an electric signal from the pressure measuring device to the control panel, and A differential pressure gauge is used as a device for measuring pressure. The drawing shows a schematic diagram of the method. The method is carried out as follows. Fan 1 airs a working area 2 with increased pressure (10 mm water. Art.). A controllable choke device 3 is mounted on the outgoing vent stream, which makes it possible to regulate the resistance of the ventilated area. The command to control the throttle device comes from the differential pressure gauge 4. To this end, from the mine workout 5, the ventilated area, the borehole 6 is drilled to the gas-hazardous or collapsed zone 7.. The measuring, differential pressure gauge 4 zones are set one in wells 6 and the second in development 5 and serve to measure the actual value of the pressure difference between the gas-hazard zone 7 and the mine output 5. Thus, the pressure gauge 4 is measured by arising in aerodynamically related zones, i.e. between the gas-hazardous zone 7 and the mining workout 5 and when changing its predetermined value, the command is sent to the throttle device 3 or to the control panel to change the operation mode of the fan 1. Applying the method will significantly reduce the inflow of harmful gases into the aired mountain working out. Claim 1. Method of monitoring and controlling the mode of ventilation of mine workings having aerodynamic communication with ha. zohazard zones, including pressure measurement and the creation of a pressure difference between the gas-hazardous zone and a ventilated mine output by means of a pressure measuring device, a retaining fan and a throttle device, characterized in that, in order to reduce the inflow of harmful gases into a ventilated mine output by providing automatic regulation the magnitude of the pressure differential between the gas-hazardous zone and the aerated mine workout in the event of disturbances in the mine’s ventilation network, pressure measurement and carried out directly in the gas-hazardous zone and in the ventilated mine workings by installing probes of the pressure measurement device in the ventilated mine working and in the wells previously drilled from the ventilated mine working to the gas hazardous zone, compare the pressure difference between the gas-hazardous zone and the ventilated mine working. it with a given value, and when the differential pressure deviates from a given value, the drooling device is automatically controlled by chi of an electric signal from the apparatus for measuring pressure. 2. A method according to claim 1, in which, when the differential pressure deviates from a predetermined value, the operation mode of the retaining fan is automatically controlled by applying an electric signal to the control panel from the pressure measuring device. 3. Method according to paragraphs. 1 and 2, characterized in that a differential pressure gauge is used as a pressure measuring device. Sources of information taken into account in the examination 1. Boot B. Preventing fires from coal spontaneous ignition at treatment sites. - Tlyukauf, 1972, No. 7, p. eleven. 2. In the same place ten.