本文選題：孤島工作面 + 沿空掘巷��； 參考：《中國(guó)礦業(yè)大學(xué)》2017年碩士論文

【摘要】：綜合運(yùn)用了理論分析、FLAC數(shù)值模擬分析、現(xiàn)場(chǎng)工業(yè)性試驗(yàn)等方法,分析工作面上覆巖層結(jié)構(gòu)形成過程及結(jié)構(gòu)模型、沿空掘巷窄煤柱寬度、掘進(jìn)及回采期間應(yīng)力分布、變性破壞特征以及塑性區(qū)演化規(guī)律,揭示錨桿錨索支護(hù)作用機(jī)理、注漿加固機(jī)理,研究得到沿空掘巷圍巖控制技術(shù)。(1)通過分析孤島工作面上覆巖層結(jié)構(gòu),采用數(shù)值模擬分析得到了孤島工作面兩側(cè)支承應(yīng)力降低區(qū)、應(yīng)力增高區(qū)范圍,煤柱內(nèi)垂直應(yīng)力分布、兩側(cè)水平位移場(chǎng)、巷道圍巖變形量等,確定合理的煤柱寬度。(2)研究了孤島工作面沿空掘巷掘進(jìn)階段、工作面回采階段巷道圍巖垂直應(yīng)力分布、塑性區(qū)演化規(guī)律以及圍巖變形特征和主要影響因素及影響規(guī)律。采高增加造成基本頂?shù)慕o定變形量增大、兩幫變形增大;回采階段,隨著采高增加工作面前方變形峰值大幅度增大,且對(duì)實(shí)體煤幫變形影響更大。隨著煤柱強(qiáng)度的增加,塑性區(qū)范圍有明顯的減小,圍巖變形量也顯著減小。(3)分析錨桿錨索支護(hù)作用機(jī)理,基于錨桿錨索對(duì)15106工作面破碎煤巖體整體穩(wěn)定性能改善,提出高強(qiáng)錨桿支護(hù)、增大預(yù)緊力、增強(qiáng)護(hù)表能力提高支護(hù)能力,研究確定了15106工作面回風(fēng)巷支護(hù)參數(shù),現(xiàn)場(chǎng)應(yīng)用效果表明有效控制了圍巖變形。
[Abstract]:By using the method of FLAC numerical simulation and field industrial test, this paper analyzes the formation process and structural model of overlying strata structure, the narrow coal pillar width along the goaf roadway, and the stress distribution during excavation and mining. The characteristics of denaturing failure and the evolution law of plastic zone reveal the action mechanism of anchor cable support and grouting reinforcement mechanism, and obtain the control technology of surrounding rock along goaf roadway. By using numerical simulation analysis, the area of reducing support stress, the area of increasing stress, the distribution of vertical stress in coal pillar, the horizontal displacement field of both sides, the deformation of surrounding rock of roadway and so on are obtained. This paper studies the vertical stress distribution of surrounding rock, the evolution law of plastic zone, the deformation characteristics of surrounding rock, the main influencing factors and the influence law. The increase of mining height leads to the increase of the given deformation of the basic roof and the increase of the deformation of the two sides, and the peak value of the deformation in front of the face increases with the increase of mining height, and the effect on the deformation of the solid coal face is greater. With the increase of the strength of coal pillar, the range of plastic zone is obviously reduced, and the deformation of surrounding rock is also significantly reduced.) the mechanism of bolting and cable supporting is analyzed. Based on the improvement of stability of coal and rock mass in 15106 working face, the stability of rock mass is improved. It is put forward that high strength bolt support, increasing pretightening force, enhancing the ability of protecting meter and improving support ability. The supporting parameters of return air roadway in 15106 face are studied and determined. The field application results show that the deformation of surrounding rock is effectively controlled.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD353

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 康紅普;于斌;楊智文;周建峰;姜鵬飛;宋金旺;代生福;楊志兵;張成宇;潘楊;;特厚煤層全煤巷道高預(yù)應(yīng)力錨桿支護(hù)技術(shù)與實(shí)例分析[J];同煤科技;2016年04期

2 康紅普;楊景賀;;錨桿組合構(gòu)件力學(xué)性能實(shí)驗(yàn)室試驗(yàn)及分析[J];煤礦開采;2016年03期

3 康紅普;司林坡;張曉;;淺部煤礦井下地應(yīng)力分布特征研究及應(yīng)用[J];煤炭學(xué)報(bào);2016年06期

4 王正義;竇林名;王桂峰;;動(dòng)載作用下圓形巷道錨桿支護(hù)結(jié)構(gòu)破壞機(jī)理研究[J];巖土工程學(xué)報(bào);2015年10期

5 王洪濤;王琦;王富奇;李術(shù)才;王德超;任堯喜;郭念波;張世國(guó);;不同錨固長(zhǎng)度下巷道錨桿力學(xué)效應(yīng)分析及應(yīng)用[J];煤炭學(xué)報(bào);2015年03期

6 康紅普;林健;吳擁政;程蓬;孟憲志;任碩;;錨桿構(gòu)件力學(xué)性能及匹配性[J];煤炭學(xué)報(bào);2015年01期

7 曹安業(yè);朱亮亮;李付臣;竇林名;趙永亮;張貞良;;厚硬巖層下孤島工作面開采“T”型覆巖結(jié)構(gòu)與動(dòng)壓演化特征[J];煤炭學(xué)報(bào);2014年02期

8 黃慶享;劉玉衛(wèi);;巷道圍巖支護(hù)的極限自穩(wěn)平衡拱理論[J];采礦與安全工程學(xué)報(bào);2014年03期

9 黃雪峰;馬龍;陳帥強(qiáng);孔洋;;預(yù)應(yīng)力錨桿內(nèi)力傳遞分布規(guī)律與時(shí)空效應(yīng)[J];巖土工程學(xué)報(bào);2014年08期

10 劉洪濤;王飛;王廣輝;趙希棟;湯達(dá);于明江;;大變形巷道頂板可接長(zhǎng)錨桿支護(hù)系統(tǒng)性能研究[J];煤炭學(xué)報(bào);2014年04期

相關(guān)會(huì)議論文 前1條

1 范維唐;;21世紀(jì)中國(guó)能源[A];21世紀(jì)中國(guó)煤炭工業(yè)第五次全國(guó)會(huì)員代表大會(huì)暨學(xué)術(shù)研討會(huì)論文集[C];2001年

相關(guān)博士學(xué)位論文 前2條

1 李澤荃;基于關(guān)鍵塊體理論的節(jié)理巖體開挖概率穩(wěn)定分析研究[D];中國(guó)礦業(yè)大學(xué)（北京）;2014年

2 龐緒峰;堅(jiān)硬頂板孤島工作面沖擊地壓機(jī)理及防治技術(shù)研究[D];中國(guó)礦業(yè)大學(xué)（北京）;2013年

，

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