浅埋煤层大面积火区快速治理技术实践
Practice and Rapid Control Technology of Large Firing Zone in Shallow Depth Seam
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摘要: 针对安太堡露天矿开采过程中,由于废弃小煤矿煤自燃引起的火区分布情况不详,火势大、范围广,采用单一小流量灭火技术难治理的现状,采用基于热电复合响应的火区发展区域探测技术、大空洞及松散高温区两相泡沫充填、煤岩较密实区水与三相泡沫交互降温和地表隔氧封堵相结合的综合灭火降温技术,仅9个月即彻底治理了安太堡露天矿22.7万m2火区,为我国新疆、内蒙古、山西等地浅埋煤层火区的治理提供了参考。Abstract: According to the firing zone distribution unknown, high firing tendency, wide firing scope, a single small flow fire control technology would be slow to cont rol the firing caused by the coal spontaneous combustions in the small abandoned coal mine during the mining process of Antaibao Surface Mine.A comprehensive fire control and temperature reduction technology combined with the survey technology based on the electric thermal complex response in the developing area of the firing zone, the two phase foam backfill in the large cavity and the loose high temperature zone, the water and three phase foam interactive temperature reduction in coal and rock well compact zone and the surface ground oxygen isolation was applied.Within nine months only, a firing zone with area of 227 000 m2 in Antaibao Surface Mine W as completely controlled, which could provide references to control the firing zone of the shallow depth seam in Xinjiang, Inner Mongolia, Shanxi and other areas.
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