本文選題：堅(jiān)硬特厚煤層 + 大采高綜放�。� 參考：《煤炭學(xué)報(bào)》2017年04期

【摘要】：針對(duì)西部埋深較淺、堅(jiān)硬、特厚煤層頂煤冒放性差的問(wèn)題,以金雞灘煤礦2-2上堅(jiān)硬特厚煤層賦存條件為基礎(chǔ),通過(guò)理論模型計(jì)算、數(shù)值模擬分析及設(shè)備結(jié)構(gòu)優(yōu)化設(shè)計(jì)等方法,分析了堅(jiān)硬特厚煤層頂煤冒放結(jié)構(gòu)及提高采出率技術(shù)。通過(guò)建立堅(jiān)硬特厚頂煤的"懸臂梁"力學(xué)模型,計(jì)算分析了頂煤厚度與懸臂極限斷裂長(zhǎng)度的關(guān)系;首次定量分析了液壓支架反復(fù)支撐對(duì)頂煤的損傷破壞效果,研究了液壓支架主動(dòng)支護(hù)作用力、反復(fù)支撐次數(shù)對(duì)頂煤破壞深度、破壞塊度的影響;分析了大采高綜放工作面煤壁片幫防治與提高頂煤冒放性的矛盾,通過(guò)優(yōu)化液壓支架架型結(jié)構(gòu)參數(shù)解決了二者之間的矛盾;創(chuàng)新設(shè)計(jì)了強(qiáng)擾動(dòng)三級(jí)高效放煤機(jī)構(gòu)與綜放工作面后部刮板輸送機(jī)交叉?zhèn)刃恫贾梅绞?有效提高了大塊頂煤的放出率與放出效率。
[Abstract]:Aiming at the problem of shallow buried depth, hard coal seam and poor caving ability of top coal seam in the west of China, based on the occurrence conditions of hard and super thick coal seam on 2-2 of Jinjitan Coal Mine, the methods of theoretical model calculation, numerical simulation analysis and equipment structure optimization design are adopted. The caving structure of top coal in hard and thick coal seam and the technology of improving mining rate are analyzed. By establishing the "cantilever beam" mechanical model of hard and super thick top coal, the relationship between the thickness of top coal and the limit fracture length of cantilever is calculated and analyzed, and the damage and failure effect of repeated support of hydraulic support on top coal is quantitatively analyzed for the first time. This paper studies the influence of active support force of hydraulic support and the times of repeated support on the failure depth and fragmentation of top coal, and analyzes the contradiction between prevention and cure of coal wall and the improvement of caving property of top coal in fully mechanized top-coal caving face with high mining height. By optimizing the structural parameters of hydraulic support frame, the contradiction between them is solved, and the cross side unloading arrangement of strong disturbance three stage high efficiency caving mechanism and the rear scraper conveyor of fully mechanized caving face is designed. The extraction rate and efficiency of bulk top coal are improved effectively.
【作者單位】： 天地科技股份有限公司開(kāi)采設(shè)計(jì)事業(yè)部;煤炭科學(xué)研究總院開(kāi)采研究分院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973)資助項(xiàng)目(2014CB046302) 青年創(chuàng)新基金資助項(xiàng)目(2016QN007)
【分類(lèi)號(hào)】：TD823;TD355.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 解興智;趙鐵林;;淺埋堅(jiān)硬特厚煤層綜放開(kāi)采頂煤冒放結(jié)構(gòu)分析[J];煤炭學(xué)報(bào);2016年02期

2 殷帥峰;何富連;程根銀;;大采高綜放面煤壁片幫判定準(zhǔn)則及安全評(píng)價(jià)系統(tǒng)研究[J];中國(guó)礦業(yè)大學(xué)學(xué)報(bào);2015年05期

3 龐義輝;劉新華;馬英;;千萬(wàn)噸礦井群綜放智能化開(kāi)采設(shè)備關(guān)鍵技術(shù)[J];煤炭科學(xué)技術(shù);2015年08期

4 Jiachen Wang;Jinwang Zhang;Zhengyang Song;Zhaolong Li;;Three-dimensional experimental study of loose top-coal drawing law for longwall top-coal caving mining technology[J];Journal of Rock Mechanics and Geotechnical Engineering;2015年03期

5 鄧雪杰;張吉雄;黃鵬;張強(qiáng);郝雄飛;;特厚煤層上向分層充填開(kāi)采頂板移動(dòng)特征分析[J];煤炭學(xué)報(bào);2015年05期

6 黃慶享;劉建浩;;淺埋大采高工作面煤壁片幫的柱條模型分析[J];采礦與安全工程學(xué)報(bào);2015年02期

7 王家臣;張錦旺;;綜放開(kāi)采頂煤放出規(guī)律的BBR研究[J];煤炭學(xué)報(bào);2015年03期

8 王國(guó)法;龐義輝;;液壓支架與圍巖耦合關(guān)系及應(yīng)用[J];煤炭學(xué)報(bào);2015年01期

9 王國(guó)法;;煤炭綜合機(jī)械化開(kāi)采技術(shù)與裝備發(fā)展[J];煤炭科學(xué)技術(shù);2013年09期

10 張西斌;周剛;劉志文;樊虎子;王波;孫越;;特厚煤層分層綜放開(kāi)采工藝技術(shù)研究[J];煤炭科學(xué)技術(shù);2013年07期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭彬;;千萬(wàn)噸級(jí)礦井集群生態(tài)圈構(gòu)建及管理優(yōu)化研究[J];科技進(jìn)步與對(duì)策;2017年09期

2 張宏偉;周坤友;榮海;付興;趙象卓;;淺埋深大采高工作面礦壓顯現(xiàn)及支架適應(yīng)性研究[J];煤炭科學(xué)技術(shù);2017年04期

3 龐義輝;王國(guó)法;;堅(jiān)硬特厚煤層頂煤冒放結(jié)構(gòu)及提高采出率技術(shù)[J];煤炭學(xué)報(bào);2017年04期

4 王金華;黃志增;于雷;;特厚煤層綜放開(kāi)采頂煤體“三帶”放煤理論與應(yīng)用[J];煤炭學(xué)報(bào);2017年04期

5 王玉成;;基于膏體充填的氣體充填開(kāi)采頂板移動(dòng)特征分析[J];內(nèi)蒙古煤炭經(jīng)濟(jì);2017年07期

6 楊世力;宋選民;周鈺博;王大威;;含硬夾矸大采高仰采綜放面煤壁穩(wěn)定性機(jī)理研究[J];煤礦開(kāi)采;2017年02期

7 劉長(zhǎng)友;;綜放開(kāi)采理論與技術(shù)的發(fā)展及思考[J];同煤科技;2017年02期

8 胡q，

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