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Mine Engineering 2023
台阶型综放开采采空区自燃“三带”分布规律研究
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Abstract:
台阶型煤体综放工作面由于周围存在大面积采空区，漏风现象较为严重，给工作面火灾防治工作带来极大挑战。以金桥煤矿1304工作面为例，对该工作面采空区温度、CO浓度及O2浓度分布规律进行了测试研究。通过研究，合理地确定了采空区不同位置自燃“三带”的分布范围，进而通过计算得出了工作面的最小推进速度，以确保该工作面顺利回采。研究结论对各类煤矿企业开展类似采煤作业面的回采防灭火工作提供了理论和技术上的重要支撑。
Due to the existence of a large area of goaf around the fully mechanized top-coal caving face with step briquette, the air leakage phenomenon is more serious, which poses a great challenge to the workface fire prevention and control. Taking the 1304 working face of Jinqiao coal mine as an example, the distribution pattern of temperature, CO concentration and O2 concentration in the mining void area of this working face was tested and studied. Through the study, the distribution of the “three zones” of spontaneous combustion at different locations in the mining area was rea-sonably determined, and the minimum advance speed of the working face was calculated to ensure smooth recovery of the working face. The findings of the study provide important theoretical and technical support for the fire prevention and suppression work in similar coal mining face in various coal mining enterprises.
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