本文選題：埋管抽采 + 采空區(qū)　； 參考：《華北理工大學(xué)》2015年碩士論文

【摘要】：煤的自燃不僅會(huì)引起礦井火災(zāi)的發(fā)生,對(duì)煤礦的安全生產(chǎn)造成威脅,破壞自然環(huán)境并造成環(huán)境污染和自然資源的浪費(fèi),而且在自燃的過(guò)程中會(huì)釋放大量的熱量和有毒的氣體進(jìn)而會(huì)造成井下作業(yè)人員的傷亡和經(jīng)濟(jì)損失。根據(jù)自燃“三帶”的劃分指標(biāo)將采空區(qū)由外向里依次劃分為散熱帶、氧化升溫帶和窒息帶等“三帶”,并形成了自燃“三帶”的相關(guān)理論,將自燃“三帶”的劃分與埋管抽采條件下的瓦斯的抽采相結(jié)合判斷采空區(qū)的自然發(fā)火情況。通過(guò)理論分析、實(shí)驗(yàn)室實(shí)驗(yàn)、現(xiàn)場(chǎng)測(cè)試等手段研究埋管抽放條件下采空區(qū)自燃“三帶”的分布情況,研究結(jié)果為采空區(qū)防滅火提供依據(jù)。通過(guò)對(duì)煤的自燃及采空區(qū)自燃“三帶”的理論分析,深入分析了采空區(qū)瓦斯抽放與自燃耦合理論。從瓦斯的抽采和滲流理論提出了埋管抽采條件下瓦斯運(yùn)移規(guī)律。通過(guò)煤的升溫氧化實(shí)驗(yàn)得到了煤在升溫過(guò)程中的氣體釋放規(guī)律,并選擇了CO氣體為適合煤自燃發(fā)火的指標(biāo)氣體,能為采空區(qū)的自然發(fā)火提供預(yù)測(cè)。在現(xiàn)場(chǎng)的瓦斯埋管測(cè)試中,通過(guò)劃分自燃“三帶”的指標(biāo):氧氣濃度和溫度將采空區(qū)內(nèi)監(jiān)測(cè)的數(shù)據(jù)進(jìn)行劃分,得到實(shí)際的自燃“三帶”的具體范圍。通過(guò)劃分出采空區(qū)自燃“三帶”的范圍,依據(jù)煤的升溫氧化實(shí)驗(yàn)選擇CO為煤自燃的指標(biāo)氣體,通過(guò)監(jiān)測(cè)自燃“三帶”中升溫氧化帶的CO濃度而判斷相應(yīng)的遺煤溫度,就能得知采空區(qū)的自然發(fā)火情況,提出符合實(shí)際的防滅火措施,為礦井的安全生產(chǎn)提供必要的保證。
[Abstract]:The spontaneous combustion of coal will not only cause the occurrence of mine fire, but also threaten the safe production of coal mine, destroy the natural environment and cause environmental pollution and waste of natural resources. In the process of spontaneous combustion, a great deal of heat and poisonous gas will be released, which will result in casualties and economic losses of underground operators. According to the division index of "three zones" of spontaneous combustion, the goaf is divided into three zones, such as heat dissipation zone, oxidation heating zone and asphyxiation zone, and the theory of "three zones" of spontaneous combustion is formed. The classification of "three zones" of spontaneous combustion and the extraction of gas under the condition of buried pipe extraction are combined to judge the spontaneous combustion in goaf. The distribution of "three zones" of spontaneous combustion in goaf under the condition of buried pipe pumping is studied by means of theoretical analysis, laboratory experiments and field tests. The results provide the basis for the prevention and fire extinguishing of goaf. Based on the theoretical analysis of the "three zones" of spontaneous combustion of coal and goaf, the coupling theory of gas drainage and spontaneous combustion in goaf is analyzed. Based on the theory of gas drainage and seepage, the law of gas migration under the condition of buried pipe drainage is put forward. Through the experiment of coal heating and oxidation, the gas release law of coal in the process of heating up is obtained, and the CO gas is selected as the index gas suitable for spontaneous combustion of coal, which can provide prediction for spontaneous combustion in goaf. In the field test of gas buried pipe, by dividing the index of "three zones" of spontaneous combustion: oxygen concentration and temperature, the monitoring data in goaf are divided, and the concrete range of "three zones" of actual spontaneous combustion is obtained. By dividing out the range of "three zones" of spontaneous combustion in goaf, according to the experiment of coal heating oxidation, CO is selected as the index gas of spontaneous combustion of coal, and the corresponding residual coal temperature is judged by monitoring the concentration of CO in the heating oxidation zone in the "three zones" of spontaneous combustion. It is possible to know the spontaneous combustion in goaf, and put forward some practical measures to prevent and extinguish fire, which can provide the necessary guarantee for the safety of mine production.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD752.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 余楚新,鮮學(xué)福,譚學(xué)術(shù);煤層瓦斯流動(dòng)理論及滲流控制方程的研究[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);1989年05期

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本文編號(hào)：1788005