發(fā)布時間：2018-06-17 18:58

  本文選題：瓦斯 + 煤自燃�。� 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：隨著煤礦開采深度的增加,瓦斯涌出量增大,同時煤巖體受應(yīng)力作用破碎性加強,煤自燃危險性加強。瓦斯與煤自燃災(zāi)害互相影響、互相制約,在生產(chǎn)現(xiàn)場災(zāi)害防治過程中要兩者兼顧。因此,研究采空煤自燃與瓦斯災(zāi)害協(xié)同防控技術(shù)具有十分重要的意義。本文以兗礦集團新疆能化公司硫磺溝煤礦4-5煤層04綜放工作面為工程背景,測試了硫磺溝煤礦04綜放工作面煤氧化產(chǎn)物生成規(guī)律及特征溫度值,選定將CO及C2H4作為判斷煤體自燃的階段性指標(biāo)性氣體。測試了煤樣的堅固性系數(shù)、瓦斯放散初速度和吸附常數(shù)。分析了 4-5煤層、鄰近煤層瓦斯相對涌出量,計算得出04綜放工作面相對瓦斯涌出量為5.1m3/t。開展了物理相似模型實驗,確定出04工作面的冒落帶、裂隙帶高度,得到了工作面的初次來壓和周期來壓步距。確定了適合04綜放工作面在礦井現(xiàn)有抽采裝備條件下的抽采負(fù)壓、高鉆孔布置參數(shù),分析了瓦斯涌出量與日推進速度及日產(chǎn)量的關(guān)系,提出了適合硫磺溝煤礦04工作面瓦斯抽采下的采空區(qū)“三帶”觀測方案,判定了 04工作面瓦斯抽采下采空區(qū)“三帶”分布規(guī)律,散熱帶范圍距離工作面22～57m以內(nèi),窒息帶距離工作面94～149m,工作面回風(fēng)側(cè)氧化升溫帶寬度70m,工作面中部50 ～80m�；诹蚧菧厦旱V04綜放工作面開采實際,構(gòu)建了采空區(qū)瓦斯與煤自燃災(zāi)害協(xié)同防控技術(shù)思路,掌握了硫磺溝煤礦04綜放工作面采空區(qū)瓦斯與煤自燃災(zāi)害協(xié)同防控工作面的合理抽采負(fù)壓、鉆孔參數(shù)、配風(fēng)量、推進速度等關(guān)鍵參數(shù)。該技術(shù)的實施有效保障了硫磺溝煤礦04綜放工作面的安全生產(chǎn),該工作面自2015年5月推進以來,累計推進2300余米,期間未發(fā)生采空區(qū)浮煤自燃和瓦斯超限事故,實現(xiàn)了礦井安全高效生產(chǎn),創(chuàng)造了良好的經(jīng)濟效益和社會效益。
[Abstract]:With the increase of coal mining depth, the amount of gas emission increases, at the same time, the fragmentation of coal and rock mass by stress is strengthened, and the danger of coal spontaneous combustion is strengthened. Gas and coal spontaneous combustion disasters affect each other and restrict each other. Both of them should be taken into account in the process of disaster prevention and control in production site. Therefore, it is of great significance to study the cooperative prevention and control technology of coal spontaneous combustion and gas disaster. Based on the engineering background of No. 04 fully mechanized caving face in 4-5 seam of Suhuangou Coal Mine of Xinjiang Neng Chemical Company of Yanzhou Coal Mine, the formation law and characteristic temperature value of oxidation product of coal in No. 04 fully-mechanized caving face of Suzhuangou Coal Mine are tested in this paper. Co and C _ 2H _ 4 are selected as the stage index gas to judge the spontaneous combustion of coal body. The coefficient of solidity, the initial velocity of gas release and the adsorption constant of coal samples were measured. The relative gas emission of 4-5 coal seam and adjacent coal seam is analyzed, and the relative gas emission of No. 04 fully mechanized caving face is calculated to be 5.1 m3 / t. The physical similarity model experiment was carried out to determine the height of falling zone and crack zone of working face 04, and the initial pressure and periodic step distance of working face were obtained. The parameters of drainage negative pressure and high borehole arrangement suitable for No. 04 fully mechanized caving face under the condition of existing mining equipment are determined, and the relationship between gas emission quantity and daily advancing speed and daily output is analyzed. The "three zones" observation scheme of goaf in No. 04 face of Sulphulangou Coal Mine is put forward, and the distribution rule of "three zones" in goaf of No. 04 face is determined. The range of heat dissipation zone is less than 2257 m from the working face. The distance of asphyxiating zone is 94 ~ 149m, the width of oxidation heating zone is 70m, and the middle part of the face is 50 ~ 80m. Based on the mining practice of No. 04 fully-mechanized caving face in Sulphulangou Coal Mine, the technical idea of coordinated prevention and control of gas and coal spontaneous combustion disaster in goaf is constructed. The key parameters, such as negative pressure, borehole parameters, air distribution, speed of advance and so on, are grasped in the goaf of No. 04 fully mechanized caving face of Suhuangou Coal Mine. The implementation of this technology has effectively guaranteed the safety production of No. 04 fully mechanized caving face in Suhuangou Coal Mine. Since the face was pushed forward in May 2015, it has pushed forward more than 2300 meters, and there have been no spontaneous combustion of floating coal and over-limit gas accidents in goaf during this period. The mine safety and efficient production has been realized, and good economic and social benefits have been created.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD712;TD752.2

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