Abstract: Provided is a simulation device and method for an entire process of fire initiation of a mining belt. The simulation device includes: a workbench, a fixing belt clamp, a sliding belt clamp, heat source assemblies, a traction rope, a traction assembly, a high-speed camera, goose neck pipes, and a multi-parameter sensor. The simulation method includes: clamping a belt sample; selecting five monitoring points from the belt sample, and extending five goose neck pipes to the corresponding monitoring points; reckoning heat required for a heating and spontaneous combustion process of the belt sample, and reversely reckoning power supply parameters; sprinkling coal samples on the belt sample, switching on a power source of the heat source assemblies for heating the belt sample, and acquiring temperature, flue gas components and image data; and analyzing the data, and summarizing a temperature distribution rule of the belt sample and a gas generation rule.

Abstract: The disclosure includes an air quantity analyzer for use in underground coal mines, comprising an explosion-proof enclosure. According to some embodiments, the air quantity analyzer for use in underground coal mines comprises a gas pipeline inside of the explosion-proof enclosure, the gas pipeline coupled to a mechanical component selected from the group consisting of an air sampler, a gas pool, and combinations thereof, a detection device inside of the explosion-proof enclosure, the detection device having a vacuum pump, wherein the vacuum pump is coupled to the gas pipeline, and a central processor inside of the explosion-proof enclosure and electrically coupled to the vacuum pump of the detection device, the central processor electrically coupled to an electric component selected from the group consisting of a light source, a detector, a power conversion module, a display and alarm module, a data communication module, and combinations thereof.

Abstract: The present disclosure includes a method of testing for gas and temperature distribution in a goaf, wherein the test device comprises a cable coupled to a cable dragging machine, the cable including a test end configured to be buried in the goaf; a gas temperature tester configured to test a gas for composition and temperature; and a gas pump configured to continuously pump gas from the test end and transmit it to the gas temperature tester. In some examples, the method comprises placing the test end of the cable in the goaf. According to some examples, the method comprises starting the cable dragging machine and starting the gas pump simultaneously with starting the cable dragging machine. The method may comprise withdrawing the cable, via the cable dragging machine, at a constant speed and analyzing, via the gas temperature tester, the composition and temperature of the gas.

Abstract: The present disclosure includes a test device for gas and temperature distribution in a goaf, comprising a gas temperature tester configured to analyze gas detection signals and temperature detection signals. In some examples, the test device comprises a gas pump coupled to the gas temperature tester and a connector coupled to the gas pump at an end opposite the gas temperature tester. The test device may comprise a wire spool rotatably coupled to the connector and a cable configured to wind on the wire spool. According to some examples, the cable comprises a test end located on a first end of the wire spool and buried in the goaf. The cable may comprise an output end located on a second end of the wire spool, the second end opposite the first end.

Abstract: The present invention discloses systems and methods of measuring environmental information in a mine tunnel. The system may comprise an ultrasonic anemometer, a multi-parameter monitor, a data acquisition module, a central control platform, a data communication module, a flexible manipulator, a power conversion module, a display and alarm module, and a computer. The multi-parameter monitor may comprise at least one of an infrared detector, a CH4 detector, a CO gas sensor, an O2 gas sensor, a CO2 gas sensor, and a temperature and humidity sensor. The system may also measure the airflow in large sections of a mine tunnel through the flexible manipulator. The method may be able to remote measure the underground environment and airflow during normal production of the mine, which helps improve the abilities of mine disaster response and relief while ensuring the safety of emergency rescue personnel.

Abstract: The disclosure includes an air quantity analyzer for use in underground coal mines, comprising an explosion-proof enclosure. According to some embodiments, the air quantity analyzer for use in underground coal mines comprises a gas pipeline inside of the explosion-proof enclosure, the gas pipeline coupled to a mechanical component selected from the group consisting of an air sampler, a gas pool, and combinations thereof, a detection device inside of the explosion-proof enclosure, the detection device having a vacuum pump, wherein the vacuum pump is coupled to the gas pipeline, and a central processor inside of the explosion-proof enclosure and electrically coupled to the vacuum pump of the detection device, the central processor electrically coupled to an electric component selected from the group consisting of a light source, a detector, a power conversion module, a display and alarm module, a data communication module, and combinations thereof.

Abstract: A method and system for implementing inter-network SMS interworking in NP service are provided in the present invention. The method includes: before initiating a MT-SMS, if a first SMS Center of GSM network (G1-SMSC) judges that the destination user is not a user of local network, then it delivers a SRI message to an interworking SMSC; the interworking SMSC queries the NPDB in CDMA network for the home network of the destination MDN, and if the home network is a second GSM network, the interworking SMSC sends a SRI message carrying the destination MDN to the HLR in the second GSM network (G2-HLR); and G2-HLR sends a SRI response carrying the address information of the MSC where the destination user is located to G1-SMSC, and the G1-SMSC initiates a MT-SMS to the MSC where the destination user is located according to the address information.

Abstract: A method and system for implementing inter-network SMS interworking in NP service are provided in the present invention. The method includes: before initiating a MT-SMS, if a first SMS Center of GSM network (G1-SMSC) judges that the destination user is not a user of local network, then it delivers a SRI message to an interworking SMSC; the interworking SMSC queries the NPDB in CDMA network for the home network of the destination MDN, and if the home network is a second GSM network, the interworking SMSC sends a SRI message carrying the destination MDN to the HLR in the second GSM network (G2-HLR); and G2-HLR sends a SRI response carrying the address information of the MSC where the destination user is located to G1-SMSC, and the G1-SMSC initiates a MT-SMS to the MSC where the destination user is located according to the address information.