丁集礦1282（3）綜采面采空區(qū)自燃“三帶”劃分研究
發(fā)布時間：2018-09-14 11:03
【摘要】：煤炭自燃嚴(yán)重阻礙了中國的煤礦安全生產(chǎn),給我國造成了多達(dá)數(shù)百億的直接或間接損失。作為我國煤炭行業(yè)主要災(zāi)害之一的煤炭自燃,給我國造成的不僅是經(jīng)濟(jì)上的損失,而且毀壞了我國在世界范圍內(nèi)的聲譽,給我國人民乃至世界人民心目中留下了不可磨滅的陰影,其造成的負(fù)面影響不言而喻。 時代和社會的飛躍前進(jìn)促使機械化大生產(chǎn)成為一個不可抗拒的趨勢。在我國廣泛施行綜合機械化采煤,顯著提高了煤炭采出率,考慮到煤礦井下地質(zhì)條件的多變性,條件成熟時,煤炭自燃就會在綜采面的采空區(qū)內(nèi)發(fā)生。要想提高礦井的安全性,加大礦井的生產(chǎn)效率,一方面要保證煤礦井下的采出率以及開采的速度,另一方面要研究并分析掌握綜采面采空區(qū)的煤炭自燃規(guī)律。 丁集礦1282(3)綜采面下方的1422(1)工作面已回采完畢,1412(1)工作面正在回采,較大的采長和走向長導(dǎo)致采空區(qū)面積較大,致使大量的浮煤殘留在采空區(qū)內(nèi)。當(dāng)通風(fēng)供氧和蓄熱條件適宜時就會引發(fā)煤炭自燃,迫使工作面的正�；夭赏Ｖ�,工作面回采空間內(nèi)的設(shè)備會被嚴(yán)重?zé)龤?最嚴(yán)重的是誘發(fā)火災(zāi)和瓦斯爆炸,給井下工作人員的生命安全帶來不可估量的傷害。迫在眉睫的任務(wù)是從整體上把握住1282(3)工作面采空區(qū)的遺煤自燃的規(guī)律,對該采空區(qū)自燃“三帶”的范圍進(jìn)行劃分。 在研究如何防治煤炭自然發(fā)火這個問題時,首先要做好兩個準(zhǔn)備；一是深度理解煤炭自燃的機理,二是準(zhǔn)確把握煤在低溫環(huán)境下的氧化規(guī)律。單一的研究方法已不能滿足對復(fù)雜問題的分析,對此,綜合的研究方法才是解決復(fù)雜問題的有力武器。其中,理論研究是基礎(chǔ),對問題的研究起到支撐的作用；實驗室實驗的數(shù)據(jù)分析是輔助,驗證理論的可行性；現(xiàn)場試驗是數(shù)據(jù)的來源,具有強大的說服力。以低溫環(huán)境下的煤氧化吸氧放熱為切入點,將吸氧量、失重量、熱流量作為研究煤低溫氧化時的主要參數(shù)；將煤樣的粒徑作為變量,對比分析煤的吸氧量與放熱量之間的關(guān)系受粒徑大小影響的程度；分析了丁集礦13-I煤的低溫氧化規(guī)律,結(jié)合熱力學(xué)和傳熱學(xué)理論建立了煤的低溫氧化數(shù)學(xué)模型,以此為依托,得出煤炭最短自燃發(fā)火期；根據(jù)丁集礦1282(3)工作而的現(xiàn)場實際條件,在下順槽預(yù)埋束管與測溫系統(tǒng)裝置,每天定時下井,采集各測點對應(yīng)的采空區(qū)內(nèi)的氣體并測量對應(yīng)點的溫度,化驗分析各氣體組分的濃度,將所得數(shù)據(jù)進(jìn)行擬合處理,得出各測點氣體濃度和溫度隨埋深的關(guān)系,總結(jié)出采空區(qū)“三帶”的分布規(guī)律。根據(jù)散熱帶的寬度和煤的最短自燃發(fā)火期,可以確定出該工作面推進(jìn)速度的臨界值(工作面的推進(jìn)速度不能小于這個值,否則會發(fā)生煤炭自燃),從而為預(yù)測預(yù)報丁集煤礦1282(3)工作面采空區(qū)煤炭自然發(fā)火提供了最有力的理論和現(xiàn)實依據(jù)。
[Abstract]:Spontaneous combustion of coal seriously hinders the safe production of coal mines in China and results in tens of billions of direct or indirect losses. As one of the major disasters in China's coal industry, coal spontaneous combustion not only causes economic losses to our country, but also destroys our country's reputation in the world. It has left an indelible shadow to the people of our country and the world, and the negative effects are self-evident. The rapid advance of the times and society makes mechanized mass production an irresistible trend. Comprehensive mechanized coal mining has been widely carried out in China, which has significantly improved the coal extraction rate. Considering the variability of underground geological conditions, when the conditions are ripe, the spontaneous combustion of coal will occur in the goaf of the fully mechanized coal face. In order to improve the safety of the mine and increase the production efficiency, on the one hand, it is necessary to ensure the mining rate and the speed of mining; on the other hand, it is necessary to study and analyze the law of spontaneous combustion of coal in the goaf of fully mechanized mining face. The 1422 (1) face below 1282 (3) fully mechanized face of Dingji Mine has been mined out. The larger mining length and strike length lead to a large area of goaf, resulting in a large amount of floating coal remaining in the goaf. When the ventilation, oxygen supply and heat storage conditions are suitable, the spontaneous combustion of coal will occur, forcing the normal mining of the working face to stop, and the equipment in the mining space of the working face will be severely burned down, the most serious of which is to induce fire and gas explosion. To the safety of underground workers bring incalculable harm. The urgent task is to grasp the law of coal spontaneous combustion in goaf of 1282 (3) face, and to divide the range of "three zones" of spontaneous combustion in goaf. When studying how to prevent and cure coal spontaneous combustion, two preparations should be made: one is to deeply understand the mechanism of coal spontaneous combustion, the other is to accurately grasp the oxidation law of coal in low temperature environment. A single research method can not satisfy the analysis of complex problems. Therefore, comprehensive research method is a powerful weapon to solve complex problems. Among them, the theoretical research is the foundation, plays a supporting role to the research of the problem; the data analysis of the laboratory experiment is auxiliary, verifies the feasibility of the theory; the field test is the source of the data, has the powerful persuasive power. The oxygen absorption, weight loss and heat flux are taken as the main parameters in the study of coal oxidation at low temperature, and the particle size of coal sample is taken as a variable. The relationship between oxygen absorption and heat release of coal is analyzed by contrast, and the low temperature oxidation law of 13-I coal in Dingji Mine is analyzed, and the mathematical model of coal oxidation at low temperature is established based on thermodynamics and heat transfer theory. The shortest spontaneous combustion period of coal is obtained, and according to the actual working conditions of 1282 (3) in Dingji Mine, the preset beam tube and temperature measuring system device in the lower trench are used to set down the well every day, to collect the gas in the goaf corresponding to each measuring point and to measure the temperature of the corresponding point. By analyzing the concentration of each gas component and fitting the data, the relationship between gas concentration and temperature with buried depth is obtained, and the distribution rule of "three zones" in goaf is summarized. According to the width of the radiating zone and the shortest spontaneous combustion period of coal, the critical value of the working face's advancing speed can be determined. Otherwise, the spontaneous combustion of coal will occur, which provides the most powerful theoretical and practical basis for forecasting and forecasting the spontaneous combustion of coal in the goaf of 1282 (3) face of Dingji Coal Mine.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TD75
本文編號：2242517
[Abstract]:Spontaneous combustion of coal seriously hinders the safe production of coal mines in China and results in tens of billions of direct or indirect losses. As one of the major disasters in China's coal industry, coal spontaneous combustion not only causes economic losses to our country, but also destroys our country's reputation in the world. It has left an indelible shadow to the people of our country and the world, and the negative effects are self-evident. The rapid advance of the times and society makes mechanized mass production an irresistible trend. Comprehensive mechanized coal mining has been widely carried out in China, which has significantly improved the coal extraction rate. Considering the variability of underground geological conditions, when the conditions are ripe, the spontaneous combustion of coal will occur in the goaf of the fully mechanized coal face. In order to improve the safety of the mine and increase the production efficiency, on the one hand, it is necessary to ensure the mining rate and the speed of mining; on the other hand, it is necessary to study and analyze the law of spontaneous combustion of coal in the goaf of fully mechanized mining face. The 1422 (1) face below 1282 (3) fully mechanized face of Dingji Mine has been mined out. The larger mining length and strike length lead to a large area of goaf, resulting in a large amount of floating coal remaining in the goaf. When the ventilation, oxygen supply and heat storage conditions are suitable, the spontaneous combustion of coal will occur, forcing the normal mining of the working face to stop, and the equipment in the mining space of the working face will be severely burned down, the most serious of which is to induce fire and gas explosion. To the safety of underground workers bring incalculable harm. The urgent task is to grasp the law of coal spontaneous combustion in goaf of 1282 (3) face, and to divide the range of "three zones" of spontaneous combustion in goaf. When studying how to prevent and cure coal spontaneous combustion, two preparations should be made: one is to deeply understand the mechanism of coal spontaneous combustion, the other is to accurately grasp the oxidation law of coal in low temperature environment. A single research method can not satisfy the analysis of complex problems. Therefore, comprehensive research method is a powerful weapon to solve complex problems. Among them, the theoretical research is the foundation, plays a supporting role to the research of the problem; the data analysis of the laboratory experiment is auxiliary, verifies the feasibility of the theory; the field test is the source of the data, has the powerful persuasive power. The oxygen absorption, weight loss and heat flux are taken as the main parameters in the study of coal oxidation at low temperature, and the particle size of coal sample is taken as a variable. The relationship between oxygen absorption and heat release of coal is analyzed by contrast, and the low temperature oxidation law of 13-I coal in Dingji Mine is analyzed, and the mathematical model of coal oxidation at low temperature is established based on thermodynamics and heat transfer theory. The shortest spontaneous combustion period of coal is obtained, and according to the actual working conditions of 1282 (3) in Dingji Mine, the preset beam tube and temperature measuring system device in the lower trench are used to set down the well every day, to collect the gas in the goaf corresponding to each measuring point and to measure the temperature of the corresponding point. By analyzing the concentration of each gas component and fitting the data, the relationship between gas concentration and temperature with buried depth is obtained, and the distribution rule of "three zones" in goaf is summarized. According to the width of the radiating zone and the shortest spontaneous combustion period of coal, the critical value of the working face's advancing speed can be determined. Otherwise, the spontaneous combustion of coal will occur, which provides the most powerful theoretical and practical basis for forecasting and forecasting the spontaneous combustion of coal in the goaf of 1282 (3) face of Dingji Coal Mine.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TD75
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 李宗翔,吳志君,王振祥;采空區(qū)遺煤自燃升溫過程的數(shù)值模型及其應(yīng)用[J];安全與環(huán)境學(xué)報;2004年06期
2 徐精彩,葛嶺梅,賀敦良;煤炭低溫自燃過程的研究[J];煤炭工程師;1989年05期
3 馬成軍;白利文;申立華;;采空區(qū)自燃“三帶”分布規(guī)律及影響因素分析[J];華北科技學(xué)院學(xué)報;2008年01期
4 宋志,曹坤,孫寶錚;采場自然發(fā)火的預(yù)測和識別[J];黑龍江礦業(yè)學(xué)院學(xué)報;1999年03期
5 王廣軍;何啟林;;采空區(qū)“三帶”寬度的研究與測定[J];科技信息;2009年03期
6 李宗翔,孫廣義,王繼波;綜放工作面煤柱內(nèi)漏風(fēng)與耗氧過程的數(shù)值模擬[J];力學(xué)與實踐;2001年04期
7 張玉貴;鏡煤和絲炭自燃傾向性研究[J];煤礦安全;1991年12期
8 王永湘;利用指標(biāo)氣體預(yù)測預(yù)報煤礦自燃火災(zāi)[J];煤礦安全;2001年06期
9 李慶軍;萬清生;周金生;張辛亥;;東榮三礦綜一輕放面自燃危險性預(yù)測[J];煤礦安全;2006年09期
10 張樹川;秦永洋;高松;戴廣龍;;高瓦斯綜采面Y型通風(fēng)采空區(qū)漏風(fēng)規(guī)律研究[J];煤炭科學(xué)技術(shù);2009年10期
，本文編號：2242517
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