本文選題：深部斜井 + 空間層位��； 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：煤礦深部井底硐室開挖誘發(fā)臨近巷道圍巖失穩(wěn)嚴(yán)重影響礦井建設(shè)和安全生產(chǎn)�；谏畈啃本畤鷰r穩(wěn)定性力學(xué)分析,揭示在與斜井相交叉的巷道和硐室開挖產(chǎn)生的擾動應(yīng)力影響下斜井圍巖變形破壞機理,對深部巷道圍巖控制及礦井安全高效開采具有重要意義。論文研究以玉溪煤礦深部斜井受與之交叉的巷道和硐室開挖對圍巖變形的影響為工程背景,建立了考慮空間幾何關(guān)系的巷道圍巖力學(xué)模型,并借助計算機輔助工程程序(CAE-Midas GTXNX)和三維有限差分程序(FLAC3D)構(gòu)建了數(shù)值模型,采用理論分析與數(shù)值模擬相結(jié)合的方法,分析得出在擾動應(yīng)力影響下深部斜井交叉巷道及硐室圍巖應(yīng)力與變形規(guī)律,揭示深部軟巖斜井變形破壞機理,提出適于玉溪煤礦深部斜井底鼓治理方案,并應(yīng)用于現(xiàn)場加固工程。研究結(jié)果表明:主斜井區(qū)域地質(zhì)賦存條件特殊性表現(xiàn)在其夾持于向斜與背斜地質(zhì)構(gòu)造之間,水平構(gòu)造應(yīng)力成為影響圍巖變形的主要因素;建立圍巖垂直應(yīng)力(FV)與水平應(yīng)力(FH)的平衡判據(jù)方程,得出機頭硐室與主斜井交叉位置水平應(yīng)力(FH)占主導(dǎo);數(shù)值模擬表明巷道圍巖主應(yīng)力區(qū)位于模型中開挖斜井兩幫底角,成為引起底鼓的主要原因。針對玉溪煤礦底鼓治理問題,提出注漿錨索與鋼筋混凝土聯(lián)合治理方案,現(xiàn)場應(yīng)用效果顯著。這為進一步研究深部穿層斜巷受掘進擾動影響巷道圍巖變形的預(yù)測與控制提供了有效方法。
[Abstract]:The instability of surrounding rock of adjacent roadway induced by underground chamber excavation in deep coal mine seriously affects mine construction and safety production. Based on the mechanical analysis of surrounding rock stability of deep inclined shaft, the mechanism of deformation and failure of surrounding rock in inclined shaft is revealed under the influence of disturbance stress caused by excavation of tunnel and chamber which intersects with inclined shaft. It is of great significance to the control of deep roadway surrounding rock and the safe and efficient mining of mine. Based on the influence of tunnel and chamber excavation on the deformation of surrounding rock in deep inclined shaft of Yuxi coal mine, a mechanical model of surrounding rock of roadway considering spatial geometry is established in this paper. The numerical model is constructed with the aid of CAE-Midas GTXNX and 3D finite-difference program FLAC3D. the method of combining theoretical analysis with numerical simulation is adopted. Under the influence of disturbance stress, the stress and deformation law of deep inclined shaft cross roadway and chamber surrounding rock are obtained, the deformation and failure mechanism of deep soft rock inclined shaft is revealed, and the scheme for controlling the bottom heave of deep inclined shaft in Yuxi coal mine is put forward. And applied to the field reinforcement project. The results show that the regional geological occurrence conditions of the main inclined well are characterized by their interlocking between syncline and anticline geological structures, and the horizontal tectonic stress is the main factor affecting the deformation of surrounding rock. The equilibrium criterion equations of vertical stress (FV) and horizontal stress (FH) of surrounding rock are established, and it is concluded that horizontal stress (FH) dominates the intersection position between the chamber and the main inclined shaft, and the numerical simulation shows that the main stress zone of roadway surrounding rock is located in the bottom angle of two sides of the inclined shaft excavated in the model. Become the main cause of the bottom drum. Aiming at the problem of floor drum treatment in Yuxi coal mine, the joint treatment scheme of grouting anchor cable and reinforced concrete is put forward, and the effect of field application is remarkable. This provides an effective method for further studying the prediction and control of surrounding rock deformation of deep inclined roadway affected by tunneling disturbance.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD35

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