發(fā)布時(shí)間：2018-06-05 16:55

  本文選題：煤巷 + 圍巖穩(wěn)定性　； 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：韓城礦區(qū)位于陜西省鄂爾多斯盆地東南邊緣,礦區(qū)淺部斷裂和褶皺發(fā)育,對煤層結(jié)構(gòu)破壞嚴(yán)重,礦井生產(chǎn)過程中,巷道的掘進(jìn)和支護(hù)比較困難,特別是煤巷的支護(hù)和維護(hù),耗費(fèi)了大量的人力物力,開采成本較大。論文以韓城礦區(qū)象山煤礦為研究對象,選取21503工作面巷道為典型煤巷代表,對原有支護(hù)情況進(jìn)行分析總結(jié),分析了煤巷圍巖失穩(wěn)機(jī)理,提出了相應(yīng)的圍巖控制技術(shù),優(yōu)化了支護(hù)參數(shù),為韓城礦區(qū)類似條件煤巷支護(hù)提供理論和技術(shù)參考。在現(xiàn)場調(diào)研的基礎(chǔ)上,采用理論分析與數(shù)值模擬相結(jié)合的方法展開研究。研究可得,21503工作面開始回采時(shí),回風(fēng)巷受二次采動(dòng)影響,發(fā)生強(qiáng)烈變形,是巷道圍巖失穩(wěn)的根本原因。由于水平構(gòu)造力影響,為工作面服務(wù)的順槽受超前支承壓力、相鄰工作面巷道和采空區(qū)側(cè)向支承壓力的共同影響,巷道出現(xiàn)強(qiáng)烈收斂變形。巷道圍巖在變形過程中,圍巖位移方向均指向巷道空間,巷道圍巖變形以頂板下沉和兩幫不對稱位移為主,左幫圍巖擾動(dòng)范圍明顯大于右?guī)�。因�?提出了以結(jié)構(gòu)補(bǔ)償為基礎(chǔ)的圍巖分區(qū)控制技術(shù),對煤巷進(jìn)行分類支護(hù)。采用優(yōu)化后的支護(hù)方案后,巷道圍巖穩(wěn)定性明顯提高,底臌量明顯降低,小于0.01m。兩幫表面位移量由支護(hù)前的0.19m降至0.08m左右,巷道頂板位移量控制在0.03m～0.06m范圍內(nèi)。巷道整體穩(wěn)定性增強(qiáng),圍巖控制效果較好,經(jīng)濟(jì)和技術(shù)效果顯著。
[Abstract]:Hancheng mining area is located in the southeast edge of Ordos Basin, Shaanxi Province. The shallow fault and fold are developed in the mining area, which seriously damages the coal seam structure. During the process of mine production, it is difficult to excavate and support the roadway, especially the support and maintenance of coal roadway. It consumes a lot of manpower and material resources, and the mining cost is large. This paper takes Xiangshan Coal Mine in Hancheng Mining area as the research object, selects 21503 face roadway as the representative of typical coal roadway, analyzes and summarizes the original supporting situation, analyzes the mechanism of surrounding rock instability in coal roadway, and puts forward the corresponding surrounding rock control technology. The supporting parameters are optimized to provide theoretical and technical reference for coal roadway support under similar conditions in Hancheng mining area. On the basis of field investigation, theoretical analysis and numerical simulation are used to carry out the research. It is studied that when coal mining begins in the coal face of No. 21503, the backwind roadway is affected by the secondary mining movement and has strong deformation, which is the fundamental cause of the rock instability of the roadway. Due to the influence of horizontal tectonic force, the working face is served by the leading support pressure, the adjacent face roadway and the side support pressure of the goaf, so the roadway has strong convergence deformation. During the deformation of surrounding rock of roadway, the direction of displacement of surrounding rock all points to the space of roadway. The deformation of surrounding rock of roadway is dominated by roof subsidence and asymmetric displacement of two bands, and the disturbance range of surrounding rock of left side is obviously larger than that of right side. Therefore, the partition control technology of surrounding rock based on structural compensation is put forward to support coal roadway classified. After adopting the optimized support scheme, the stability of roadway surrounding rock is obviously improved, and the floor heave is obviously reduced, less than 0.01 m. The surface displacement of the two sides is reduced from 0.19 m to 0.08 m, and the displacement of roadway roof is controlled in the range of 0.03m~0.06m. The overall stability of roadway is enhanced, the control effect of surrounding rock is better, and the economic and technical effect is remarkable.
【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】：TD353;TD322.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孫旭;;淺談當(dāng)前我國煤炭經(jīng)濟(jì)形勢與應(yīng)對策略[J];煤;2016年01期

2 王有俊;;軟巖回采巷道支護(hù)[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年S2期

3 彭建平;;錨、網(wǎng)、帶+錨索聯(lián)合支護(hù)技術(shù)在軟弱頂板煤巷中的應(yīng)用[J];煤礦支護(hù);2008年02期

4 龐建勇,郭蘭波,劉松玉;高應(yīng)力巷道局部弱支護(hù)機(jī)理分析[J];巖石力學(xué)與工程學(xué)報(bào);2004年12期

5 韓可琦,王玉浚;中國能源消費(fèi)的發(fā)展趨勢與前景展望[J];中國礦業(yè)大學(xué)學(xué)報(bào);2004年01期

6 伍佑倫,許夢國,何明華,王劍,錢峰;采準(zhǔn)巷道支護(hù)分級的探討[J];礦業(yè)研究與開發(fā);2002年03期

7 周青,楊新安,高艷靈,劉保衛(wèi);金川不良巖體分類及其巷道支護(hù)研究[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年02期

8 景海河,蘇永華,孫曉明,何翔;深井傾斜巖層巷道復(fù)合支護(hù)技術(shù)研究[J];金屬礦山;2001年11期

9 柏建彪,侯朝炯,杜木民,馬東彩;復(fù)合頂板極軟煤層巷道錨桿支護(hù)技術(shù)研究[J];巖石力學(xué)與工程學(xué)報(bào);2001年01期

10 劉高,聶德新,韓文峰;高應(yīng)力軟巖巷道圍巖變形破壞研究[J];巖石力學(xué)與工程學(xué)報(bào);2000年06期

相關(guān)博士學(xué)位論文 前1條

1 張海龍;中國新能源發(fā)展研究[D];吉林大學(xué);2014年

，

本文編號：1982746