【摘要】：為了提高燕家河煤礦煤炭資源回采率、延長(zhǎng)礦井的服務(wù)年限和實(shí)現(xiàn)煤層群中厚薄煤層之間合理配采,文章基于礦井中近距離煤層群5-1煤、5-2煤及8煤地質(zhì)條件,采用理論分析、物理模擬、數(shù)值模擬、現(xiàn)場(chǎng)實(shí)測(cè)分析等方法對(duì)近距離煤層群下煤層綜放開采上行開采技術(shù)進(jìn)行深入研究,在綜合分析8煤綜放開采采場(chǎng)覆巖運(yùn)移規(guī)律及破斷特征后,確定了上覆5-1煤、5-2煤巖層變形破壞特征、上行開采可行性以及5-1煤、5-2煤工作面合理布置等關(guān)鍵參數(shù)。主要研究結(jié)果如下:(1)理論分析表明,5-1煤層位于8煤工作面采空區(qū)上方垮落帶的上層位、裂縫帶的下層位;5-2煤層位于8煤工作面采空區(qū)上方垮落帶與裂縫帶的過渡層位,少部分鉆孔區(qū)域顯示不滿足上行開采。(2)采場(chǎng)覆巖運(yùn)移及破斷特征分析表明:8煤工作面采場(chǎng)覆巖垮落帶高度為25m左右,裂縫帶高度為35~60m;5-1煤層處于8煤垮落帶之上,5-1煤層頂?shù)装暹B續(xù)性完好,不存在臺(tái)階下沉,可上行開采。5-2煤相對(duì)5-1煤破壞較嚴(yán)重。(3)鉆孔窺視實(shí)測(cè)8煤垮落帶高度約為25m。5-2煤巷探顯示頂?shù)装逦闯霈F(xiàn)臺(tái)階下沉,煤層出現(xiàn)整體下沉、連續(xù)性完好,可上行開采。當(dāng)8煤采空區(qū)一側(cè)為實(shí)體煤層或8煤區(qū)段煤柱為寬煤柱(20m)時(shí),5-2煤工作面布置其順槽應(yīng)內(nèi)錯(cuò)8煤采空區(qū)不小于25m。(4)綜合以上分析表明,8煤綜放開采后,上覆5-1、5-2煤層處于整體下沉,煤層結(jié)構(gòu)連續(xù)性完好;除切眼、停采線及工作面上下端頭上部局部區(qū)域以外,5-1、5-2煤層未出現(xiàn)臺(tái)階錯(cuò)動(dòng),均可上行開采。
[Abstract]:In order to improve the recovery rate of coal resources in Yanjiahe coal mine, prolong the service life of the coal mine and realize rational mining between the thick and thin coal seams in the coal seam group, this paper bases on the geological conditions of 5-1 coal, 5-2 coal and 8 coal in the coal seam group. Using the methods of theoretical analysis, physical simulation, numerical simulation, field measurement analysis and so on, the up-going mining technology of fully mechanized caving mining under the close distance coal seam group is deeply studied. Based on the comprehensive analysis of the overlying rock migration and breaking characteristics of 8 coal fully mechanized caving mining stope, the deformation and failure characteristics of overlying 5-1 coal and 5-2 coal strata, the feasibility of upward mining and the 5-1 coal are determined. 5-2 coal face reasonable arrangement and other key parameters. The main results are as follows: (1) theoretical analysis shows that the 5-1 coal seam is located in the upper layer of the caving zone above the goaf of No. 8 coal face and the lower layer of the fracture zone; The 5-2 coal seam is located in the transitional zone between the caving zone and the fracture zone above the goaf of No. 8 coal face. (2) the analysis of overlying rock migration and fracture characteristics of stope shows that the height of overlying rock collapse zone is about 25m and the height of fracture zone is 350.60m; Coal seam 5-1 is above the 8th coal caving zone, and the roof and floor of coal seam 5-1 are in good continuity, and there is no step sinking. The damage of 5-2 coal is more serious than that of 5-1 coal. (3) the height of 8 coal caving zone measured by borehole observation is about 25m.5-2 coal roadway, the roof and floor does not appear step subsidence, the coal seam appears whole subsidence, and the continuity is intact. It can be mined up. When one side of 8 coal goaf is solid coal seam or 8 coal section coal pillar is wide pillar (20m), 5-2 coal face should be arranged in the same slot and 8 coal goaf should not be less than 25m. (4) the comprehensive analysis above shows that after 8 coal fully mechanized caving mining, 8 coal fully mechanized caving mining, The overlying coal seam 5-1D 5-2 is in the whole subsidence, and the coal seam structure continuity is intact; Except for cutting, stoppage and the upper part of the upper end of the working face, there is no step dislocation in the 5-1D 5-2 coal seam, so it can be mined up.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD823.81

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 邵小平;武軍濤;張嘉凡;張杰;;上行開采覆巖裂隙演化規(guī)律與層間巖層穩(wěn)定性研究[J];煤炭科學(xué)技術(shù);2016年09期

2 黃鵬;李百宜;肖猛;陳志維;裴玉龍;;近距離煤層充填上行開采臨界充實(shí)率設(shè)計(jì)[J];采礦與安全工程學(xué)報(bào);2016年04期

3 姜耀東;楊英明;馬振乾;李彥偉;;大面積巷式采空區(qū)覆巖破壞機(jī)理及上行開采可行性分析[J];煤炭學(xué)報(bào);2016年04期

4 王紅勝;由臨東;李樹剛;雙海清;杜政賢;;復(fù)雜地質(zhì)條件煤層群開采礦井合理生產(chǎn)能力分析[J];西安科技大學(xué)學(xué)報(bào);2015年03期

5 王紅勝;李樹剛;張新志;吳林梓;董永建;雙海清;;沿空巷道基本頂斷裂結(jié)構(gòu)影響窄煤柱穩(wěn)定性分析[J];煤炭科學(xué)技術(shù);2014年02期

6 王紅勝;張東升;李樹剛;王琳;吳林梓;;基于基本頂關(guān)鍵巖塊B斷裂線位置的窄煤柱合理寬度的確定[J];采礦與安全工程學(xué)報(bào);2014年01期

7 廖學(xué)東;黃飛;何廷峻;;近距離煤層群上行開采相似材料模擬試驗(yàn)研究[J];煤炭科學(xué)技術(shù);2013年02期

8 吳林梓;王紅勝;李樹剛;董永建;;孤島綜放面區(qū)段煤柱優(yōu)化及圍巖控制技術(shù)[J];煤礦安全;2013年01期

9 張宏偉;韓軍;海立鑫;李明;喬鴻波;;近距煤層群上行開采技術(shù)研究[J];采礦與安全工程學(xué)報(bào);2013年01期

10 王成;張農(nóng);李桂臣;許興亮;錢德雨;張念超;;上行開采頂板不同區(qū)域巷道穩(wěn)定性控制原理[J];中國(guó)礦業(yè)大學(xué)學(xué)報(bào);2012年04期

相關(guān)博士學(xué)位論文 前2條

1 王紅勝;沿空巷道窄幫蠕變特性及其穩(wěn)定性控制技術(shù)研究[D];中國(guó)礦業(yè)大學(xué);2011年

2 馮國(guó)瑞;殘采區(qū)上行開采基礎(chǔ)理論及應(yīng)用研究[D];太原理工大學(xué);2009年

相關(guān)碩士學(xué)位論文 前2條

1 雙海清;綜放沿空掘巷圍巖穩(wěn)定性分析與控制技術(shù)研究[D];西安科技大學(xué);2015年

2 吳林梓;基本頂斷裂結(jié)構(gòu)影響窄煤柱穩(wěn)定性研究及工程應(yīng)用[D];西安科技大學(xué);2014年

，

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