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一、前言。利用原煤导热系数较小、自身起保温隔热材料的作用,在一些矿井和洗煤厂对储运筒仓立壁不敷设保温层,使用效果表明,在寒冷季节最冷月分筒仓储煤冻结层仅距外表厚8～15cm的一薄层,对筒仓的正常使用不受影响。七台河矿业精煤集团公司已建成了几座不敷设保温层的储运筒仓,且进行了现场实测和分析、考察高寒地区最冷的一月份平均气温-25～-29℃时不敷设保温层的筒仓内部储煤的分布和可能饿冻结厚度,经理论计算冻结厚度仅为本15—25cm与现场观测对比
I. Introduction. The use of raw coal thermal conductivity smaller, their own thermal insulation materials from the role of some mines and coal washing plant on the wall storage silos not laying insulation layer, the use of results show that the coldest month in the cold season sub-storage coal frozen layer only A thin layer of 8-15 cm thick from the outside, the normal use of the silo is unaffected. Qitaihe Mining Group Co., Ltd. has built a number of coal-storage storage silos which are not covered by the insulation layer, and conducted field measurement and analysis to examine the coldest January average temperature in January -25 ~ -29 ℃ Insulation layer of the internal storage of coal in the silo and may be hungry frozen thickness, calculated by the theory of the frozen thickness of only 15-25cm compared with the scene observed