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常年浸水條件下邊坡穩(wěn)定性分析方法研究

發(fā)布時(shí)間:2018-05-22 20:32

  本文選題:邊坡 + 穩(wěn)定性分析; 參考:《湖南大學(xué)》2013年碩士論文


【摘要】:近年來,隨著我國各項(xiàng)基礎(chǔ)設(shè)施建設(shè)的蓬勃發(fā)展,以滑坡、崩塌、泥石流等形式為主的邊坡變形失穩(wěn)破壞事件頻繁發(fā)生,,給人民的生命財(cái)產(chǎn)安全和工程經(jīng)濟(jì)造成了巨大的損失。影響邊坡穩(wěn)定性的因素很多,其中水的作用是關(guān)鍵因素之一,每年因?yàn)樗淖饔冒l(fā)生邊坡失穩(wěn)定的事故不勝枚舉。因此開展?jié)B流作用下邊坡的穩(wěn)定性分析的研究,確保邊坡安穩(wěn)定與安全就顯得十分必要且很有現(xiàn)實(shí)意義。 本文首先系統(tǒng)總結(jié)和分析了邊坡穩(wěn)定性分析的基本理論,對常用的邊坡穩(wěn)定性分析方法、特點(diǎn)及其適應(yīng)條件等進(jìn)行了分析比較,并結(jié)合實(shí)際工程進(jìn)行計(jì)算,根據(jù)計(jì)算所得結(jié)果對邊坡的穩(wěn)定性進(jìn)行了分析評價(jià)。進(jìn)而基于滲流基本定律,考慮多孔介質(zhì)的飽和滲流場和應(yīng)力場的相互作用對邊坡穩(wěn)定性的影響,推導(dǎo)流固耦合方程并探尋有效的求解方法,為數(shù)值模擬計(jì)算提供理論依據(jù)。此外,通過對是否考慮水的滲流作用以及加固前后等不同工況的數(shù)值模擬,對包含橋墩段和不包含橋墩段的邊坡穩(wěn)定性進(jìn)行了研究,根據(jù)計(jì)算所得結(jié)果,對邊坡穩(wěn)定性進(jìn)行了分析評價(jià)。 最后,以長張高速公路K254邊坡工程為依據(jù),以本文方法進(jìn)行了典型斷面的計(jì)算分劃,并通過現(xiàn)場的監(jiān)測數(shù)據(jù),分析了滑坡體、骨架護(hù)坡的穩(wěn)定性,針對加固后的邊坡,提出現(xiàn)場動態(tài)監(jiān)測方案,確立了監(jiān)測內(nèi)容,為工程的順利進(jìn)行提供技術(shù)支持和安全保障。
[Abstract]:In recent years, with the vigorous development of infrastructure construction in China, slope deformation and instability events, such as landslide, collapse, debris flow and so on, occur frequently, causing huge losses to people's life and property safety and engineering economy. There are many factors that affect slope stability, among which the role of water is one of the key factors. Therefore, it is necessary and practical to study the slope stability analysis under seepage flow to ensure slope stability and safety. In this paper, the basic theory of slope stability analysis is systematically summarized and analyzed, and the commonly used slope stability analysis methods, characteristics and adaptive conditions are analyzed and compared. According to the calculated results, the stability of the slope is analyzed and evaluated. Based on the basic law of seepage, considering the influence of the interaction between saturated seepage field and stress field of porous media on slope stability, the fluid-solid coupling equation is derived and an effective solution method is explored, which provides a theoretical basis for numerical simulation. In addition, the stability of the slope with and without piers is studied by numerical simulation of whether to consider the seepage effect of water and the different working conditions before and after reinforcement. The slope stability is analyzed and evaluated. Finally, based on the K254 slope engineering of Chang-Zhang Expressway, the typical section is calculated and divided by the method of this paper, and the stability of landslide body and skeleton slope protection is analyzed through the monitoring data in the field, aiming at the reinforced slope. The dynamic monitoring scheme is put forward, the monitoring content is established, and the technical support and safety guarantee are provided for the smooth progress of the project.
【學(xué)位授予單位】:湖南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:TU43

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