【摘要】：采空區(qū)注氮惰化抑爆技術(shù)在自然發(fā)火煤層當(dāng)中應(yīng)用比較廣泛,但針對(duì)具體條件下半封閉采空區(qū)的應(yīng)用仍然存在一些關(guān)鍵技術(shù)需要解決,例如注氮半徑、注氮方式等,本文根據(jù)宏巖煤業(yè)采空區(qū)“三帶”分布規(guī)律的基礎(chǔ)上,提出了宏巖煤礦的注氮惰化參數(shù),達(dá)到了采空區(qū)抑爆的目的。 本文針對(duì)宏巖煤業(yè)公司礦井回采工作面在回采過(guò)程中,采空區(qū)冒落巖石相互撞擊摩擦產(chǎn)生的高溫?zé)岜砻婧突鸹?導(dǎo)致井下火源產(chǎn)生,通過(guò)采空區(qū)瓦斯爆炸防治方案優(yōu)選,結(jié)合宏巖煤業(yè)公司的開(kāi)采技術(shù)條件,綜合分析多種治理采空區(qū)內(nèi)因?yàn)?zāi)害的方法,最后采用注氮的方法惰化采空區(qū)氣體,并根據(jù)束管監(jiān)測(cè)結(jié)果在4405工作面進(jìn)行了注氮設(shè)計(jì)并實(shí)施,保證了回采工作面的安全回采。 根據(jù)4405工作面瓦斯涌出規(guī)律及分布狀況,通過(guò)束管采樣監(jiān)測(cè)與注氮工藝的設(shè)計(jì)、優(yōu)化、實(shí)施,以及束管監(jiān)測(cè)結(jié)果的分析和以往經(jīng)驗(yàn)的總結(jié),確定·4405工作面注氮半徑定為20m,注氮量為4000m3,注氮時(shí)間為5.5小時(shí),注氮方式采用間歇性注氮,加強(qiáng)日常的管理,引入注氮防災(zāi)的長(zhǎng)效機(jī)制。經(jīng)過(guò)注氮方案的初設(shè)和優(yōu)化,在采空區(qū)實(shí)施注氮防災(zāi)過(guò)程中,起到了稀釋和惰化災(zāi)害性氣體的作用,使瓦斯致災(zāi)區(qū)轉(zhuǎn)型成為安全區(qū),原來(lái)的瓦斯爆炸區(qū)瓦斯?jié)舛认陆档?%以下,注氮效果達(dá)到了惰化抑爆的目標(biāo),確保了采空區(qū)及工作面的安全。
[Abstract]:The technology of nitrogen injection inerting blasting suppression in goaf is widely used in spontaneous combustion coal seam, but there are still some key technologies to be solved for the application of semi-closed goaf under specific conditions, such as nitrogen injection radius, nitrogen injection mode and so on. Based on the distribution law of "three zones" in the goaf of Hongyan coal industry, this paper puts forward the parameters of nitrogen injection inerting in Hongyan coal mine, which achieves the purpose of blasting suppression in goaf. This paper aims at the high temperature hot surface and spark produced by the caving rock collision friction in the mining face of Hongyan Coal Industry Company, which leads to the underground fire source, and through the gas explosion prevention scheme in the goaf, the optimal selection is made. Combined with the mining technical conditions of Hongyan Coal Industry Company, this paper comprehensively analyzes several methods of controlling the internal disasters in goaf, and finally adopts the method of nitrogen injection to inert the gas in goaf, and designs and implements nitrogen injection in 4405 face according to the monitoring results of beam tube. The safety of mining face is ensured. According to the law and distribution of gas emission in 4405 working face, through the design, optimization, implementation, analysis of monitoring results and summary of previous experience of sampling and monitoring of beam tube and nitrogen injection process, It is determined that the radius of nitrogen injection is 20m, the quantity of nitrogen injection is 4000m ~ 3, the time of nitrogen injection is 5.5h, the mode of nitrogen injection is intermittent nitrogen injection, the daily management is strengthened, and the long-term mechanism of nitrogen injection prevention is introduced. After the initial design and optimization of the nitrogen injection scheme, in the process of nitrogen injection and disaster prevention in the goaf, it played the role of diluting and inerting the disastrous gas, making the gas-induced disaster area turn into a safe area, and the gas concentration in the original gas explosion area decreased to less than 5%. The effect of nitrogen injection has achieved the goal of inerting explosion suppression and ensured the safety of goaf and working face.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TD712.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 程慶迎;黃炳香;李增華;王海峰;楊永良;;利用頂板冒落規(guī)律抽放采空區(qū)瓦斯的研究[J];礦業(yè)安全與環(huán)保;2006年06期

2 李宗翔;裴明順;陸曉明;;瓦斯安全管理新指標(biāo)—采空區(qū)瓦斯涌出強(qiáng)度[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào);2005年06期

3 董鋼鋒;鄒銀輝;王振;冀超輝;周燦凱;;尾巷對(duì)采空區(qū)瓦斯流場(chǎng)影響的數(shù)值模擬[J];礦業(yè)安全與環(huán)保;2012年05期

4 馮海峰;利用自動(dòng)調(diào)壓裝置治理采空區(qū)瓦斯異常涌出[J];河北煤炭;2005年02期

5 李誠(chéng)玉;周西華;張麗麗;李昕;;采空區(qū)瓦斯運(yùn)移的數(shù)學(xué)模型[J];礦業(yè)快報(bào);2007年08期

6 李曉泉;;采空區(qū)瓦斯運(yùn)移規(guī)律研究[J];現(xiàn)代礦業(yè);2009年03期

7 鄧明;張國(guó)樞;秦汝祥;;頂板走向鉆孔抽放采空區(qū)瓦斯數(shù)值模擬與分析[J];礦業(yè)研究與開(kāi)發(fā);2008年05期

8 李宗翔,紀(jì)奕君;開(kāi)區(qū)注氮采空區(qū)自燃溫度場(chǎng)的數(shù)值模擬研究[J];力學(xué)與實(shí)踐;2005年04期

9 李鐵良,陶玉梅,劉先平,齊俊峰;采空區(qū)瓦斯涌出特征與抽放方法綜述[J];煤礦安全;2003年04期

10 李鐵良,陶玉梅;己_(15)-17160采空區(qū)瓦斯運(yùn)移規(guī)律與治理方法[J];煤礦安全;2003年05期

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本文編號(hào)：2136670