【摘要】：我國(guó)地形地貌條件復(fù)雜多變,地質(zhì)災(zāi)害頻繁發(fā)生。隨著我國(guó)經(jīng)濟(jì)發(fā)展的突飛猛進(jìn),促進(jìn)了我國(guó)工程建設(shè)的步伐,特別是隨著西部大開(kāi)發(fā)的進(jìn)一步深入,在黃土高原,尤其是延安地區(qū)大規(guī)模地開(kāi)展基礎(chǔ)設(shè)施建設(shè)。由于延安地區(qū)土地資源有限,特別是由于地形地貌等條件的約束,在工程建設(shè)中邊坡工程頻繁出現(xiàn)。因此,能否找到一個(gè)最優(yōu)的設(shè)計(jì)方案,兼顧設(shè)計(jì)要求和節(jié)約成本,對(duì)于科研工作人員來(lái)說(shuō)刻不容緩。本文以陜西省延安市橋溝鎮(zhèn)東十里鋪村滑坡工程為依托,系統(tǒng)地研究了滑坡體的工程地質(zhì)條件、基本特征、穩(wěn)定性分析及動(dòng)態(tài)綜合治理方案優(yōu)選等問(wèn)題。具體內(nèi)容如下:(1)工程地質(zhì)條件介紹了延安市橋溝鎮(zhèn)東十里鋪村山體滑坡的工程地質(zhì)條件,為下文分析滑坡體的穩(wěn)定性分析和滑坡治理方案的優(yōu)選做準(zhǔn)備。(2)滑坡的穩(wěn)定性評(píng)價(jià)分析通過(guò)搜集滑坡體的相關(guān)資料、現(xiàn)場(chǎng)勘查、室內(nèi)試驗(yàn)、分析區(qū)域地質(zhì)背景條件等,并參照相關(guān)工程經(jīng)驗(yàn),確定滑帶土的物理力學(xué)參數(shù),分別采用定性、定量的方法評(píng)價(jià)坡體的穩(wěn)定性。以MIDAS/GTS有限元強(qiáng)度折減法理論為依據(jù),模擬該滑坡的穩(wěn)定性,其結(jié)果與傳遞系數(shù)法計(jì)算的結(jié)果高度吻合。為了居民的生命財(cái)產(chǎn)安全,需要提高滑坡的安全儲(chǔ)備,急需對(duì)該滑坡工程進(jìn)行治理。(3)滑坡治理方案優(yōu)選研究首先,以滑坡體的具體工程實(shí)際為依據(jù),參照滑坡穩(wěn)定性的評(píng)價(jià)結(jié)果,借助評(píng)價(jià)滑坡治理的三個(gè)指標(biāo):安全性、經(jīng)濟(jì)性、合理性,分析滑坡的預(yù)防和治理措施并提出三種治理方案。然后,利用模糊層次分析法對(duì)三種治理方案進(jìn)行優(yōu)選。最后,以技術(shù)、經(jīng)濟(jì)及對(duì)環(huán)境的影響三個(gè)指標(biāo)為依據(jù)將三個(gè)方案進(jìn)行對(duì)比,進(jìn)一步驗(yàn)證層次分析法優(yōu)選結(jié)果的可靠性。最終確定橋溝鎮(zhèn)滑坡治理的最優(yōu)方案為方案一:錨索抗滑樁+擋土板+平整坡面及削坡+截排水+動(dòng)態(tài)監(jiān)測(cè)。
[Abstract]:The topographic and geomorphological conditions in China are complex and changeable, and geological disasters occur frequently. With the rapid development of China's economy, the pace of engineering construction in China has been promoted, especially with the further development of the western region, large-scale infrastructure construction has been carried out in the Loess Plateau, especially in Yan'an area. Because of the limited land resources in Yan'an area, especially because of the constraints of topography and geomorphology, slope engineering frequently appears in the engineering construction. Therefore, it is urgent for scientific research staff to find an optimal design scheme that takes into account design requirements and cost savings. Based on the landslide project of Dongshilipu Village, Qiaogou Town, Yan'an City, Shaanxi Province, this paper systematically studies the engineering geological conditions, basic characteristics, stability analysis and optimal selection of dynamic comprehensive treatment schemes of the landslide body. The specific contents are as follows: (1) the engineering geological conditions of the landslide in Dongshilipu Village, Qiaogou Town, Yan'an City, are introduced. Preparation for the following analysis of landslide stability analysis and landslide treatment scheme. (2) landslide stability evaluation and analysis through the collection of landslide related data, on-site exploration, laboratory tests, analysis of regional geological background conditions, etc. According to the relevant engineering experience, the physical and mechanical parameters of sliding zone soil are determined, and the stability of slope body is evaluated by qualitative and quantitative methods. Based on the MIDAS/GTS finite element strength reduction theory, the stability of the landslide is simulated, and the results are in good agreement with the results calculated by the transfer coefficient method. For the safety of residents' life and property, it is necessary to improve the safety reserve of landslide, so it is urgent to control the landslide project. (3) the study of landslide treatment scheme is based on the concrete project of landslide. According to the evaluation results of landslide stability, this paper analyzes the prevention and treatment measures of landslide and puts forward three control schemes by means of three indexes of landslide control: safety, economy and rationality. Then, the fuzzy analytic hierarchy process is used to select the three schemes. Finally, based on the technical, economic and environmental impact, the three schemes are compared to verify the reliability of the analytical hierarchy process (AHP). Finally, the optimal scheme of landslide treatment in Qiaogou Town is determined as the first scheme: dynamic monitoring of slope level and slope cutting drainage with anchor cable anti-slide pile retaining plate.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P642.22

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本文編號(hào)：2316743