煤矸石山自然发火数学模型在红阳三矿新矸石山自燃防治中的应用

煤矿矸石山自燃现象普遍存在 ,对环境污染及危害极大 ,防治矸石山自燃是矿区环境修复的重点研究内容。笔者利用宏观的连续介质研究方法 ,以多孔介质流体动力学理论为指导 ,建立了煤矿矸石山自然发火数学模型 ,从数学上揭示了矸石山自燃的动态演变过程。通过分析矸石山内的渗流场明确了自然发火的影响因素及内在联系 ,针对红阳三矿新矸石山的自燃预防问题 ,提出了碾压、覆盖和边界注浆相结合的综合防治施工方案。该技术在红阳三矿新矸石山的现场应用表明 ,治理方案科学、经济、合理 ,实施效果良好。研究结果对预防矸石山自燃具有理论指导意义与实际应用价值。

Application of Mathematical Model for Spontaneous Combustion of Coal Gangue Dump in New Gangue Dump Site of #3 Hongyang Mine

Spontaneous combustion of coal gangue dump occurs frequently in coal mines, which pollutes the environment seriously. Its control technology is the priority research subject in restoring the environment. By macro-research method of continuous medium and on the basis of hydrodynamics theory of porous medium, a mathematical model of spontaneous combustion is established for the coal gangue dump, which reveals mathematically the dynamic evolution process of the spontaneous combustion of coal gangue dump. Through the analysis of the seepage flow field of the coal gangue dump, the influencing factors and internal correlation could be well defined for the spontaneous combustion. In order to control the spontaneous combustion occurred at the new gangue dumpsite of #3 Hongyang Mine, a comprehensive protocol of rolling, overlaying and boundary grouting is proposed. Its practice in new gangue dumpsite indicates that the protocol is scientific, economic and rational with good result. The result is significant in controlling the spontaneous combustion occurred in gangue dumpsite.