本文選題：應力殼 + 采深　； 參考：《安徽理工大學》2017年碩士論文

【摘要】：本文是在采場圍巖應力殼理論的基礎上,采用實驗室相似模擬、計算機數(shù)值模擬相結合的綜合研究手段,以淮南礦業(yè)集團謝橋煤礦11318E綜采工作面為主要工程背景,深入系統(tǒng)的研究了采深對采場圍巖應力殼力學特征的影響規(guī)律。研究發(fā)現(xiàn),采場礦壓顯現(xiàn)受控于應力殼的存在和其演化所帶來的影響。且隨著采深的增加,應力殼的高度先基本不變,采深1000m左右處為拐點,1000m以上時應力殼的形態(tài)和力學特征受采深影響顯著,殼高隨著采深的增加而增加,走向殼基距工作面煤壁距離增大,殼基影響范圍也隨之變寬,應力殼形態(tài)由扁平殼向拱形殼轉變。分析了不同采深情況下采場推進過程中的位移變形和圍巖破壞特點,得出工作面變形和破壞主要發(fā)生工作面煤壁前方一定距離內,且隨著開采深度的增大,工作面上覆巖層垂直位移量明顯增大,采場圍巖破壞范圍也隨之增大,充分揭示了深部采場工作面圍巖變形具有近場效應,且采深越大,圍巖變形近場效應越顯著。研究結果表明深部礦井應力殼的形成機制仍然明顯,深部礦井采場礦壓顯現(xiàn)仍受控于應力殼的存在和其演化帶來的影響。該研究成果進一步揭示了深部采場礦壓顯現(xiàn)與采深的關系,該研究對深部礦井采場圍巖控制、工作面及巷道支護以及動力災害防治具有指導意義。
[Abstract]:This paper is based on the stress shell theory of surrounding rock of stope, adopts the laboratory similar simulation and the computer numerical simulation to combine the comprehensive research means, taking the 11318E fully mechanized mining face of Huainan Mining Group as the main engineering background. The influence of mining depth on the mechanical characteristics of stress shell in surrounding rock of stope is studied systematically. It is found that stope pressure is controlled by the existence of stress shell and its evolution. With the increase of mining depth, the height of the stress shell is basically unchanged, and the shape and mechanical characteristics of the stress shell are significantly affected by the mining depth when the depth is above 1000 m, and the height of the shell increases with the increase of mining depth. With the increase of the distance between strike base and coal face wall, the influence range of shell base becomes wider, and the shape of stress shell changes from flat shell to arch shell. The characteristics of displacement deformation and surrounding rock failure in the process of stope advance under different mining depth are analyzed. It is concluded that the deformation and destruction of the face mainly occur within a certain distance in front of the coal wall of the working face, and with the increase of mining depth, The vertical displacement of overlying strata increases obviously and the failure range of surrounding rock increases, which fully reveals that the deformation of surrounding rock in deep stope has near-field effect, and the bigger the mining depth is, the more obvious is the near-field effect of surrounding rock deformation. The results show that the formation mechanism of deep mine stress crust is still obvious, and the formation of mine pressure in deep mine stope is still controlled by the existence of stress shell and the influence of its evolution. The research results further reveal the relationship between mine pressure appearance and mining depth in deep stope. This study has a guiding significance for the control of surrounding rock in deep mine stope, support of face and roadway, and prevention and control of dynamic disaster.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD311

【參考文獻】

相關期刊論文 前10條

1 許家林;朱衛(wèi)兵;鞠金峰;;淺埋煤層開采壓架類型[J];煤炭學報;2014年08期

2 謝和平;周宏偉;薛東杰;王宏偉;張茹;高峰;;煤炭深部開采與極限開采深度的研究與思考[J];煤炭學報;2012年04期

3 宋振騏;梁盛開;湯建泉;盧國志;;綜采工作面煤壁片幫影響因素研究[J];湖南科技大學學報(自然科學版);2011年01期

4 黃忠;李瑞峰;;“十二五”期間我國煤炭供需分析與預測[J];中國煤炭;2010年08期

5 趙鐵錘;;抓住加快經(jīng)濟發(fā)展方式轉變重大機遇 努力推進煤礦安全生產(chǎn)形勢持續(xù)穩(wěn)定好轉[J];中國煤炭;2010年08期

6 謝廣祥;楊科;;采場圍巖宏觀應力殼演化特征[J];巖石力學與工程學報;2010年S1期

7 謝廣祥;王磊;常聚才;;煤柱寬度對綜放工作面巷道位移的影響規(guī)律[J];煤炭科學技術;2008年12期

8 謝廣祥;王磊;;采場圍巖應力殼力學特征的工作面長度效應[J];煤炭學報;2008年12期

9 楊科;謝廣祥;;采動裂隙分布及其演化特征的采厚效應[J];煤炭學報;2008年10期

10 謝廣祥;王磊;;工作面支承壓力采厚效應解析[J];煤炭學報;2008年04期

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