《煤矿安全监控十万个为什么》（Coal mine safety monitoring 100,000 why）.docVIP

《煤矿安全监控十万个为什么》（Coal mine safety monitoring 100,000 why） 1. Why must the mine be equipped with security monitoring system? A: the mine safety monitoring system can monitor the gas concentration in the mine in real time, and if the gas overlimit can automatically sever the power supply in the controlled area, prevent the occurrence of the gas accident. In addition, mine safety monitoring system can monitor the changes of mine gas and other parameters on the ground, provide the basis for safety management and ensure the safe production of mines. Therefore, the mine must be equipped with security monitoring system. 2. Why should coal mining enterprises establish a safety instrument measurement system? Answer: in order to improve coal mine safety monitoring equipment accuracy, reliability, and avoid the defects of measuring instruments, measuring means, make the equipment cant display normal utility, the coal mining enterprises shall establish safety instrument measurement inspection system. Why does the security monitoring device have to use a dedicated cable connection? Answer: if the monitoring signal cable and the dispatcher telephone share cable, its essence is safe and explosion-proof performance is not guaranteed. When the cable fails, the monitoring equipment and the dispatcher cant work properly and cant get the information of the gas concentration in the well. The security monitoring equipment is safe and reliable only using the special cable connection. 4. Why should security monitoring equipment be given priority in essential safety? Answer: the essential safety type explosion-proof electrical equipment can not ignite the explosion mixture of the surrounding environment, whether it is under normal operation and failure condition. Therefore, the safety monitoring equipment should be given priority to the essential security. 5. Why is the system of 24-hour duty on ground safety monitoring station? A: only 24 hours watch system can be used in the ground security