本文選題：邊坡 + 地下采空區(qū)��； 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：邊坡的穩(wěn)定性研究在巖土工程領(lǐng)域中占有相當重要的位置。邊坡一旦發(fā)生失穩(wěn)破壞,會對人民群眾的生命財產(chǎn)安全造成嚴重的威脅及危害。而地下采空區(qū)作為影響邊坡穩(wěn)定性的眾多外部因素之一,使得邊坡穩(wěn)定性的問題變得更加復(fù)雜。地質(zhì)構(gòu)造、巖體結(jié)構(gòu)、采空區(qū)位置、采礦方法、邊坡形狀及采場所在位置的不同,都會產(chǎn)生截然不同的后果。 采空區(qū)對邊坡穩(wěn)定性的影響主要有：一是打破了邊坡巖體內(nèi)部應(yīng)力的分布特征,加速節(jié)理裂隙的發(fā)育,降低巖體的總體強度；二是在邊坡開挖的過程中會造成采空區(qū)上覆巖體的塌陷、變形等危害。 論文結(jié)合安家?guī)X露天礦工程實例,采用理論分析、現(xiàn)場調(diào)研、極限平衡分析和數(shù)值模擬等方法分析采空區(qū)對邊坡穩(wěn)定性的影響及破壞模式。通過應(yīng)用極限平衡理論的SLIDE軟件計算無采空區(qū)工況下邊坡的穩(wěn)定系數(shù),以及應(yīng)用極限平衡理論的SLIDE軟件和有限元強度折減理論的大型通用軟件ANSYS分別對無采空區(qū)和存在采空區(qū)時的邊坡狀態(tài)進行數(shù)值模擬,研究邊坡內(nèi)部巖體的應(yīng)力應(yīng)變特征,分析其破壞模式。通過對比分析,揭示露天礦邊坡在采空區(qū)作用下的變形破壞特征,為安家?guī)X露天礦的安全生產(chǎn)提供科學(xué)依據(jù),也為存在類似情況的露天礦提供參考。
[Abstract]:The study of slope stability plays an important role in geotechnical engineering. Once slope failure occurs, it will cause serious threat and harm to the safety of people's life and property. As one of the external factors affecting slope stability, underground goaf makes slope stability more complicated. Different geological structure, rock mass structure, goaf location, mining method, slope shape and mining site, The main effects of goaf on slope stability are as follows: first, it breaks the internal stress distribution characteristics of slope rock mass, accelerates the development of joints and fissures, and reduces the overall strength of rock mass; Secondly, it will cause the collapse and deformation of the overlying rock mass in the goaf during the excavation of the slope. In combination with the engineering example of Anjialing open-pit mine, the paper adopts theoretical analysis, field investigation, and so on. Limit equilibrium analysis and numerical simulation are used to analyze the influence of goaf on slope stability and failure mode. The slope stability coefficient under the condition of no goaf is calculated by using the slip software based on the limit equilibrium theory. With the help of the limit equilibrium theory and the finite element strength reduction theory, ANSYS, the numerical simulation of the slope state with and without goaf is carried out, and the stress and strain characteristics of the rock mass inside the slope are studied. The failure mode is analyzed. Through comparison and analysis, the characteristics of deformation and failure of open-pit slope under the action of goaf are revealed, which provides scientific basis for safe production of Anjialing open-pit mine, and also provides reference for opencast mine with similar situation.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU43

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本文編號：2000878