本文選題：穩(wěn)定性　切入點(diǎn)：計(jì)算　出處：《遼寧工程技術(shù)大學(xué)》2015年碩士論文

【摘要】：在巖土工程研究領(lǐng)域中,邊坡工程是研究的難點(diǎn)和重點(diǎn)。隨著科學(xué)技術(shù)的進(jìn)步,大型工程建設(shè)活動(dòng)日益活躍。與此同時(shí),工程場地復(fù)雜的環(huán)境和地質(zhì)條件使得與工程建設(shè)密切相關(guān)的邊坡穩(wěn)定性問題日漸凸顯。例如：道路工程、水利工程、大型露天礦山開采工程等。由于大型露天礦邊坡具有規(guī)模大、包含地層多、構(gòu)造地質(zhì)條件復(fù)雜、巖性變化多樣等特點(diǎn),加之巖體的風(fēng)化作用,使得露天礦邊坡的穩(wěn)定性分析難度大。經(jīng)查閱國內(nèi)外大量與邊坡穩(wěn)定性分析相關(guān)的文獻(xiàn)、專著,本文以撫順市西露天礦南幫邊坡為研究對象,分析工程地質(zhì)條件,進(jìn)行邊坡變形動(dòng)態(tài)監(jiān)測。在實(shí)驗(yàn)室確定巖體的力學(xué)指標(biāo)參數(shù)的基礎(chǔ)上,研究邊坡破壞變形的機(jī)制,運(yùn)用層次分析法對南幫不穩(wěn)定邊坡進(jìn)行整體穩(wěn)定性評價(jià),用極限平衡分析法和有限元強(qiáng)度折減法對變形較嚴(yán)重的E400和E1200剖面進(jìn)行穩(wěn)定性計(jì)算和數(shù)值模擬,最終實(shí)現(xiàn)邊坡穩(wěn)定性分析的研究。在有限元強(qiáng)度折減法中,采用ANSYS有限元分析軟件,建立邊坡內(nèi)部可視化的位移、應(yīng)力二維數(shù)值模型。最后,把理論與實(shí)踐相結(jié)合,根據(jù)撫順市西露天礦南幫邊坡的實(shí)際地質(zhì)條件,本文給出了以回填壓腳為主,疏排水工程為輔的治理方案,并且用極限平衡分析法和有限元強(qiáng)度折減法對治理后的邊坡穩(wěn)定性進(jìn)行驗(yàn)算。
[Abstract]:In the field of geotechnical engineering, slope engineering is a difficult and important part of the research. With the progress of science and technology, the construction activities of large-scale engineering become more and more active. At the same time, The complex environment and geological conditions of the engineering site make the slope stability problems closely related to the construction of the project increasingly prominent. For example: road engineering, water conservancy project, Large-scale open-pit mining projects, etc., due to the characteristics of large-scale open-pit slope with large scale, including many strata, complicated tectonic geological conditions, various lithologic changes, and the weathering of rock mass, It is difficult to analyze the slope stability of open pit mine. After consulting a large number of literatures and monographs related to slope stability analysis, this paper takes the south slope of Fushun west opencast mine as the research object to analyze the engineering geological conditions. The dynamic monitoring of slope deformation is carried out. On the basis of determining the mechanical parameters of rock mass in laboratory, the mechanism of slope failure and deformation is studied, and the overall stability evaluation of the unstable slope of the south slope is carried out by using the analytic hierarchy process (AHP). The stability calculation and numerical simulation of E400 and E1200 sections with severe deformation are carried out by using the limit equilibrium analysis method and the finite element strength reduction method. Finally, the slope stability analysis is realized. In the finite element strength reduction method, ANSYS finite element analysis software is used to establish a two-dimensional numerical model of displacement and stress in the slope. Finally, combining theory with practice, according to the actual geological conditions of the southern slope of Fushun West Open-pit Mine, a numerical model of displacement and stress is established. In this paper, a treatment scheme with backfill foot as main part and drainage engineering as auxiliary is given, and the stability of slope after treatment is checked by using limit equilibrium analysis method and finite element strength reduction method.
【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】：2015
【分類號】：TD824.7

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