砂墩子矿综放面采空区煤自燃防治技术研究
发布时间：2019-04-02 02:46
【摘要】：煤炭是我国的主体能源,在一次能源结构中占70%左右。在未来相当长时期内,煤炭作为主体能源的地位不会改变。煤层自燃火灾是矿井的主要灾害之一,不仅造成了严重的人员伤亡和巨大的经济损失,而且还会引起环境污染和生态平衡的破坏。综放工作面在回采过程中开采强度大,冒落空间广,工作面供风量相对较大,一次性遗煤较多,漏风强度大,回采工作面上下顺槽上部顶煤放出率低,采空区堆积大量松散煤体,使得采空区遗煤自燃危险性增大。本文以砂墩子矿N4002综放面为研究背景,根据N4002综放面的现场实际情况,理论分析了综放面采空区煤自燃的特点及其影响因素。利用XK—Ⅵ型煤自然发火实验台,实验研究了砂墩子煤矿4#煤的自燃特性参数,为采空区煤自燃的预测预报奠定了基础。根据现场实际观测,对砂墩子矿N4002综放面采空区自燃“三带”进行了划分,并确定了自燃危险区域。最后,提出了以注氮、灌浆和控制采空区漏风为主的煤自燃防控技术,保证矿井安全高效生产。
[Abstract]:Coal is the main source of energy in China, accounting for about 70% of the primary energy structure. The status of coal as the main source of energy will not change for a considerable period of time in the future. Coal spontaneous combustion is one of the main disasters in coal mine, which not only causes serious casualties and huge economic losses, but also causes environmental pollution and ecological balance damage. In the mining process of fully mechanized top coal caving face, the mining intensity is large, the space of caving is wide, the supply air volume of the face is relatively large, the single coal remains more, the air leakage intensity is large, and the caving rate of the top coal in the top of the upper top of the top of the A large number of loose coal bodies are accumulated in goaf, which increases the risk of spontaneous combustion of the remaining coal in goaf. Based on the research background of N4002 fully mechanized caving face in Shaduanzi Coal Mine, the characteristics and influencing factors of coal spontaneous combustion in goaf of fully mechanized caving face are analyzed theoretically according to the field situation of N4002 fully mechanized caving face. The spontaneous combustion characteristic parameters of No. 4 coal in Shaduanzi Coal Mine are studied by using XK- 鈪，
本文编号：2452158
[Abstract]:Coal is the main source of energy in China, accounting for about 70% of the primary energy structure. The status of coal as the main source of energy will not change for a considerable period of time in the future. Coal spontaneous combustion is one of the main disasters in coal mine, which not only causes serious casualties and huge economic losses, but also causes environmental pollution and ecological balance damage. In the mining process of fully mechanized top coal caving face, the mining intensity is large, the space of caving is wide, the supply air volume of the face is relatively large, the single coal remains more, the air leakage intensity is large, and the caving rate of the top coal in the top of the upper top of the top of the A large number of loose coal bodies are accumulated in goaf, which increases the risk of spontaneous combustion of the remaining coal in goaf. Based on the research background of N4002 fully mechanized caving face in Shaduanzi Coal Mine, the characteristics and influencing factors of coal spontaneous combustion in goaf of fully mechanized caving face are analyzed theoretically according to the field situation of N4002 fully mechanized caving face. The spontaneous combustion characteristic parameters of No. 4 coal in Shaduanzi Coal Mine are studied by using XK- 鈪，
本文编号：2452158
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