【摘要】：煤炭是我國(guó)的主體能源,在一次能源結(jié)構(gòu)中占70%左右。在未來(lái)相當(dāng)長(zhǎng)時(shí)期內(nèi),煤炭作為主體能源的地位不會(huì)改變。煤層自燃火災(zāi)是礦井的主要災(zāi)害之一,不僅造成了嚴(yán)重的人員傷亡和巨大的經(jīng)濟(jì)損失,而且還會(huì)引起環(huán)境污染和生態(tài)平衡的破壞。綜放工作面在回采過(guò)程中開(kāi)采強(qiáng)度大,冒落空間廣,工作面供風(fēng)量相對(duì)較大,一次性遺煤較多,漏風(fēng)強(qiáng)度大,回采工作面上下順槽上部頂煤放出率低,采空區(qū)堆積大量松散煤體,使得采空區(qū)遺煤自燃危險(xiǎn)性增大。本文以砂墩子礦N4002綜放面為研究背景,根據(jù)N4002綜放面的現(xiàn)場(chǎng)實(shí)際情況,理論分析了綜放面采空區(qū)煤自燃的特點(diǎn)及其影響因素。利用XK—Ⅵ型煤自然發(fā)火實(shí)驗(yàn)臺(tái),實(shí)驗(yàn)研究了砂墩子煤礦4#煤的自燃特性參數(shù),為采空區(qū)煤自燃的預(yù)測(cè)預(yù)報(bào)奠定了基礎(chǔ)。根據(jù)現(xiàn)場(chǎng)實(shí)際觀測(cè),對(duì)砂墩子礦N4002綜放面采空區(qū)自燃“三帶”進(jìn)行了劃分,并確定了自燃危險(xiǎn)區(qū)域。最后,提出了以注氮、灌漿和控制采空區(qū)漏風(fēng)為主的煤自燃防控技術(shù),保證礦井安全高效生產(chǎn)。
[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，

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