摘要
采用了包括多点热电偶测定采空区遗煤温度、应用六氟化硫气体示踪和测定漏风压差等综合技术手段研究分析了漏风分布规律。结果发现,遗煤温度变化受漏风温度和漏风强度影响较大;停采线漏风的量及漏风时间受主要进、回风道的布置以及采掘接替安排的影响。由于采用无煤柱开采技术,三个相邻阶段的采空区之间连通,存在漏风,最后又从开采技术上提出了防火措施。
The regularity or the air leakage distribution is analyzed by the synthetical methods including the temperature measuring of the left coal in goaf with multy - thermocouple sensors and the pressure gap detecting of air leakage with the sulphur hexafluoride tracergas. The result shows that the temperature variation of the left coal in goaf is effected by temperature amd intensity of air leakage, and the time and quantity of air leakage through the mining-stopped line effected by the layout of the main internal and return roadways and also by the interval of upper and downer mining layers. There is air leakage since the worked梠ut sections of three adjacent horizons are connected to each other due to non-pillars working. Therefore the fire-preventing measures are put forward in mining technics.
关键词
厚煤层
自燃
矿山火灾
采空区
thermo-electric couplers
trace methods
high seams
spontaneous combustion
fire
air leakage
