本文選題：瓦斯涌出　切入點(diǎn)：綜采工作面　出處：《太原理工大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：煤炭作為我國主要的能源之一,在國民經(jīng)濟(jì)以及人民的生活中起到了不可替代的作用。作為煤炭資源開采大國,我國無論從開采數(shù)量還是規(guī)模上在全世界都是無出其右的。在我國每年的重特大安全生產(chǎn)事故中,煤礦安全事故占的比例非常的大,而在煤礦安全事故中,瓦斯災(zāi)害及其次生災(zāi)害所占比例最高。因此,研究瓦斯災(zāi)害預(yù)防機(jī)理就顯得尤為重要。 在煤礦開采場所,瓦斯災(zāi)害主要是瓦斯涌出和煤與瓦斯突出。在礦井中瓦斯的涌出地點(diǎn)稱為瓦斯源,瓦斯源的數(shù)量及其涌出強(qiáng)度直接決定著綜采工作面的瓦斯積聚量。為了治理好瓦斯必須提前預(yù)測(cè)出其瓦斯涌出量,為生產(chǎn)和治理探明道路。由此可見,瓦斯涌出者礦之大事,死生之地,存亡之道,不可不察也。 本文對(duì)瓦斯的貯存及運(yùn)移規(guī)律進(jìn)行了研究,并利用撫順煤科院所提出的分源預(yù)測(cè)法,對(duì)礦井綜采工作面的瓦斯涌出進(jìn)行了預(yù)測(cè)并建立起瓦斯涌出預(yù)測(cè)模型。對(duì)于不同來源的瓦斯,本文將其分為四個(gè)源頭即：煤壁瓦斯涌出源,落煤瓦斯涌出源,采空區(qū)遺留煤炭涌出源以及鄰近層瓦斯涌出源。結(jié)合現(xiàn)場數(shù)據(jù)以及其涌出強(qiáng)度的規(guī)律對(duì)以上四者分別建立了涌出強(qiáng)度隨時(shí)間變化的數(shù)學(xué)模型以及累計(jì)瓦斯涌出量數(shù)學(xué)模型。該模型具有直觀且適應(yīng)性強(qiáng)等特點(diǎn)。后利用該模型對(duì)陽煤集團(tuán)寺家莊礦進(jìn)行了瓦斯涌出預(yù)測(cè)。實(shí)踐證明該模型雖然還不甚完善,但具有一定的實(shí)用價(jià)值且存在較大的改進(jìn)空間。對(duì)于采空區(qū)內(nèi)瓦斯運(yùn)移及分布情況本文利用太原理工大學(xué)的相似模擬實(shí)驗(yàn)設(shè)備進(jìn)行了模擬。 礦井突出事故,具有突然性和破壞性大的特點(diǎn)。本文利用綜合指標(biāo)法——煤層瓦斯壓力(P)、瓦斯放散初速度指標(biāo)(△p)、煤的堅(jiān)固性系數(shù)(f)和煤的破壞類型對(duì)寺家莊礦的9、11、12、13、14號(hào)煤層的突出危險(xiǎn)性進(jìn)行了預(yù)測(cè)。
[Abstract]:As one of the main energy sources in our country, coal plays an irreplaceable role in the national economy and people's life. No matter in terms of the quantity or scale of mining in China, there is no right in the world. In China, coal mine safety accidents account for a very large proportion of major and serious accidents in production every year, while in coal mine safety accidents, The proportion of gas disaster and secondary disaster is the highest. Therefore, it is very important to study the prevention mechanism of gas disaster. In coal mining sites, gas disasters are mainly gas emission and coal and gas outburst. The quantity of gas source and its emission intensity directly determine the amount of gas accumulation in fully mechanized mining face. In order to control gas well, it is necessary to predict the amount of gas emission in advance, so as to prove the road for production and control. The place of death and the way of survival cannot be ignored. In this paper, the law of gas storage and migration is studied, and the method of source separation prediction proposed by Fushun Academy of Coal Sciences is used. The gas emission of fully mechanized coal mining face is predicted and a prediction model of gas emission is established. For gas from different sources, this paper divides it into four sources: coal wall gas emission source, falling coal gas emission source. Combined with the field data and the regularity of the emission intensity, the mathematical model of the variation of the emission intensity with time and the accumulative amount of gas emission were established for the above four persons. The mathematical model, which is intuitive and adaptable, is used to predict the gas emission in Sijiazhuang Mine of Yangmei Group Group. The practice shows that the model is not perfect. However, there is some practical value and there is a great room for improvement. The gas migration and distribution in goaf are simulated by the similar experimental equipment of Taiyuan University of Technology in this paper. Mine outburst accident, It has the characteristics of sudden and destructiveness. In this paper, the comprehensive index method of coal seam gas pressure, initial velocity index of gas release (PX) and the failure type of coal have been applied to the outburst of coal seam 9111112Y1314 in Sijiazhuang Coal Mine. The danger is predicted.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD713

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