【摘要】：滑坡是山區(qū)中既常見又極具危害性的地質(zhì)災(zāi)害,是一個非線性的較復(fù)雜的系統(tǒng)。隨著近年來相關(guān)學(xué)科的發(fā)展,出現(xiàn)了不少關(guān)于滑坡穩(wěn)定性的計算方法和對影響滑坡穩(wěn)定的各種因素的分析方法。對滑坡穩(wěn)定性的定性分析與定量分析后,提出合理的滑坡防治方案建議,對滑坡治理方案進行風(fēng)險評價,均是邊坡(滑坡)整治工程的重要課題。本文以筒陽雷打石滑坡為研究對象,通過現(xiàn)場勘察和理論分析,針對其滑坡各項特征和穩(wěn)定性影響因素進行了詳細(xì)的說明與分析,研究其破壞成因機理,并以穩(wěn)定性定性分析與穩(wěn)定性定量分析兩個角度對治理前的滑坡穩(wěn)定性進行評價,在此基礎(chǔ)上,給出了合理的防治工程方案建議,對滑坡的整治措施方案效果進行了穩(wěn)定性評估研究。首先運用全面的現(xiàn)場調(diào)查和理論分析手段,對滑坡基本特征、變形破壞模式、影響穩(wěn)定性主要因素進行分析,用工程地質(zhì)類比等方法定性分析了滑坡穩(wěn)定性,得知邊坡目前仍處于殘余變形狀態(tài)。緊接著采用傳遞系數(shù)法、有限元法對滑坡進行了穩(wěn)定性定量分析,分析結(jié)果為雷打石滑坡在暴雨、地震等因素的作用下可能發(fā)生失穩(wěn)。綜合穩(wěn)定性分析結(jié)果,對三岔湖旅游快速通道修復(fù)方案(高填方多孔拱涵)在應(yīng)急治理工程未失效和已失效的情況下進行穩(wěn)定性系數(shù)計算,進行了治理效果風(fēng)險評估。結(jié)論對雷打石滑坡防治工程的設(shè)計、施工均有很實際的指導(dǎo)意義。
[Abstract]:Landslide is a common and dangerous geological hazard in mountainous area, and it is a nonlinear and complex system. With the development of related disciplines in recent years, there have been many methods for calculating landslide stability and analyzing various factors affecting landslide stability. After the qualitative analysis and quantitative analysis of landslide stability, it is an important subject of slope (landslide) remediation project to put forward reasonable landslide prevention and control plan and evaluate the risk of landslide control scheme. In this paper, based on the field investigation and theoretical analysis, the characteristics of the landslide and the influencing factors of its stability are explained and analyzed in detail, and the mechanism of its failure is studied. On the basis of stability analysis and quantitative analysis of stability, the landslide stability before treatment is evaluated. On this basis, reasonable prevention and control project proposals are given. The stability evaluation of the landslide regulation scheme was carried out. Firstly, by means of comprehensive field investigation and theoretical analysis, the basic characteristics of landslide, the mode of deformation and failure, the main factors affecting stability are analyzed, and the stability of landslide is qualitatively analyzed by means of engineering geological analogy. It is known that the slope is still in the state of residual deformation. Then the transfer coefficient method and the finite element method are used to analyze the stability of the landslide. The results show that the landslide may be unstable under the action of rainstorm and earthquake. Based on the results of stability analysis, the stability coefficient of Sancha Lake tourist Expressway Restoration Scheme (high fill porous arch culvert) was calculated without or without failure of emergency treatment project, and the risk of control effect was evaluated. Conclusion the design and construction of Leidashi landslide prevention project are of practical significance.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P642.22

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