【正文】 ng water to the coal pile on a regular basis, doing so can prevent the dust of the coal yard. Coal immersed in water to prevent the practice of the spontaneous。an Mining Bureau Workshop of mine for a successful application from 14 an application point of view, this approach is only used on the ground ignition temperature is generally more than 200 ℃ 。 ③ pyrolysis good stability。 ② For the production of the mine, the downhole temperature around the area of iron substances, magic detection rules can not effectively use. The uneven the ③ coal seams and coal in the distribution of iron tuberculosis, bring some difficulties to the magic measurement method to detect spontaneous bustion area. Resistivity probe method [2] Under normal circumstances, buried in the underground coal seams, along the strike (or other direction) because of its structural state and water content changed little, the resistivity remained basically unchanged. But when the coal spontaneous bustion, the structural state of the coal seam and the water content of large changes, causing changes in the resistivity of the coal seams and surrounding rock. In the early stages of spontaneous bustion, the resistivity will decrease。 either a small change in these factors will cause temperature changes of infrared radiation. Therefore, the exclusion of confounding factors, the extraction of the same substance, temperature anomaly information is critical. 2) Temperature sensor: The temperature sensor thermal resistance, thermocouple, AD590 temperature sensors. Thermal resistance and the working principle of the thermocouple is a thermoelectric effect. Prediction roadway loose coal may get angry regional and hightemperature point in the production of spontaneous bustion higher risk of regional buried thermocouple probes, remote continuous detection of the temperature of the roadway of loose coal, and to study the temperature distribution and temperature change the law. This approach has to predict a reliable, intuitive, but the point contact, forecast a smaller range forecast, installation, maintenance workload, especially in the probe, leads easily damaged. Gas analysis, temperature detection, and gas temperature monitoring objectives and forecast indicators of the safety monitoring system and beam pipe monitoring system are realtime monitoring and prediction, the premise of its forecast of coal selfheating or spontaneous bustion. Magic probe method The substance of the magic detection method, the coal seam overlying rocks generally contain a large amount of siderite and pyrite nodules, coal seam spontaneous bustion when the overlying rocks are baked at high temperature, the iron position of the physical and chemical changes, the formation of a magic material, and retain a strong magic. After baking the magic 10 properties of the overlying rocks with enhanced spontaneous bustion temperature increases. Electrical prospecting coal fire area in the 1960s, China39。 British use 649 infrared imager and improved type 8 MEL1045, type DC thermal imager。 ΔT of 20 ℃ coal (lignite and longflame coal) is not easy from coalfired. It can be seen from Table 1, from lignite to anthracite, the ignition point is getting higher and higher, the spontaneous bustion tendency is more and more weak. (2) Oxygen conditions. The coal pile is exposed to air, surface contact with the air full peration, and the air gap between the coal to the coal pile internal oxidation to create the conditions internal to the coal pile. Block of coal is greater the greater the gap between the coal, the better oxygen conditions. (3) Oxidation time. Coal from the oxidation of the development to spontaneous bustion is a process, and the oxidation time to achieve spontaneous bustion period may bee to spontaneous bustion. Such as longflame coal spontaneous bustion stage 1 to 3 months, the gas coal of 4 to 6 months. (4) Thermal storage conditions. Coal gives off heat in the oxidation process, only when the heat released is greater than the heat dissipated in order to make the heat buildup, temperature rise, to reach ignition point would be spontaneous bustion of coal. In addition, the coal particle size, moisture, ash, paction, ambient temperature, humidity and other factors may affect the spontaneous bustion of coal. The finer the granularity, the greater the specific surface area, the oxidation 4 reaction is more severe, the more liable to spontaneous bustion. In general, the spontaneous bustion of coal may go through water evaporation, oxidation, the spontaneous bustion in three stages. Coal moisture, coal leaching coal with oxygen in the water, to prevent direct contact with the oxidation reaction, as long as the water is not lost, it will not affect the quality of the coal。 1 附錄： 外 文資料與 中 文 翻譯 外 文 資料 ： Analysis of the spontaneous bustion of coal cause of the fire, forecasting techniques and prevention measures 1 Introduction Mine fire is the major natural disasters in coal mines. Spontaneous bustion of coal is the main form of the mine fire in China39。 ΔT 40 ℃ coal spontaneous bustion coal。 gas sensor has a small size, the electrical output, easy to use, been widely used in mine monitoring systems and portable instrumentation, but most of the gas sensor stability, 7 sensitivity, and life is not yet satisfactory, coupled with its relatively expensive price, to some extent, restricted the use of gas sensor. Chromatography is the most accurate, stable and reliable method of gas analysis, and automatic operation with the analytical instruments and puter automatic control and data processing technology continues to progress, has been basically achieved. In recent years, China has developed a special type of chromatography GC8500 mine fire monitoring system of multiparameter chro