【摘要】：隨著煤炭開采深部的不斷增加,沿空留巷圍巖變形劇烈,尤其是巷道底鼓量增大,治理困難,嚴(yán)重影響了沿空留巷的穩(wěn)定性。本文采用理論分析、數(shù)值模擬及現(xiàn)場工業(yè)性試驗等方法對不同頂?shù)装鍘r性下留巷底鼓進(jìn)行研究,為不同頂?shù)装鍡l件下的底鼓防控提供理論依據(jù)。結(jié)合顧橋礦1115(1)工作面地質(zhì)條件,運(yùn)用相關(guān)力學(xué)知識建立深部沿空留巷底板力學(xué)模型,并得出底鼓量計算公式。在硬頂硬底、硬頂軟底、軟頂軟底及軟頂硬底四種頂?shù)装鍡l件下,通過理論計算和數(shù)值模擬計算解析解和數(shù)值解,運(yùn)用單因素分析法,分析留巷底鼓量隨巷道寬度、巷道高度、充填體寬度、采高四種因素的變化特征及底鼓主要影響因素。結(jié)合以上研究結(jié)果,提出不同頂?shù)装鍘r性下底鼓分類防控措施。將理論成果運(yùn)用到工程實踐,對巷道頂?shù)装寮皟蓭瓦M(jìn)行綜合治理,對底板位移進(jìn)行觀測�，F(xiàn)場實測數(shù)據(jù)表明,針對不同頂?shù)装鍘r性的底鼓防控措施有效的控制了底鼓量,達(dá)到了良好的留巷效果。
[Abstract]:With the increasing of the depth of coal mining, the surrounding rock deformation of gob-side roadway is severe, especially the amount of tunnel bottom bulging increases, and the treatment is difficult, which seriously affects the stability of gob-side roadway. In this paper, theoretical analysis, numerical simulation and on-the-spot industrial tests are used to study the bottom drum under different roof and floor lithology, which provides a theoretical basis for the prevention and control of bottom drum under different roof and floor conditions. Combined with the geological conditions of 1115 (1) working face in Guqiao Mine, the mechanical model of the bottom plate of deep gob-side roadway is established by using the relevant mechanics knowledge, and the calculation formula of bottom bulging quantity is obtained. Under the conditions of hard top and hard bottom, hard top soft bottom, soft roof soft bottom and soft top hard bottom, the analytical solution and numerical solution are calculated by theoretical calculation and numerical simulation, and single factor analysis is used to analyze the amount of bottom bulging in roadway with the width of roadway and the height of roadway. The variation characteristics of filling body width and mining height and the main influencing factors of bottom drum. Combined with the above research results, the measures of classification and control of bottom drum under different lithology of roof and floor are put forward. The theoretical results are applied to engineering practice to comprehensively control the roof and floor of roadway and to observe the displacement of floor. The field measurement data show that the bottom drum quantity is controlled effectively and the entry retention effect is achieved by the control measures of the bottom drum according to the different lithology of the roof and floor.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD327.3

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