本文選題：位移-時(shí)間曲線(xiàn) + 改進(jìn)切線(xiàn)角�。� 參考：《西南科技大學(xué)》2016年碩士論文

【摘要】：滑坡是一種非常嚴(yán)重的地質(zhì)災(zāi)害,同時(shí)我國(guó)也是世界上滑坡地質(zhì)災(zāi)害分布最廣泛,發(fā)生最頻繁,程度最嚴(yán)重的國(guó)家之一。每年因滑坡泥石流等地質(zhì)災(zāi)害所造成的經(jīng)濟(jì)損失達(dá)上百億元,死亡數(shù)百人,對(duì)國(guó)家的經(jīng)濟(jì)發(fā)展及人們的生命財(cái)產(chǎn)安全造成了極大的威脅。由此,滑坡災(zāi)害的監(jiān)測(cè)預(yù)警及穩(wěn)定性評(píng)價(jià)也逐漸成為了人們普遍關(guān)注的問(wèn)題。在單體滑坡穩(wěn)定性評(píng)價(jià)中,位移是滑坡穩(wěn)定狀態(tài)最直觀的反映,并且變形量測(cè)方法簡(jiǎn)單,所以它在滑坡監(jiān)測(cè)預(yù)警中越來(lái)越引起人們的重視。針對(duì)目前滑坡穩(wěn)定性評(píng)價(jià)的復(fù)雜性和不確定性,本文引入一種基于累計(jì)位移-時(shí)間特征曲線(xiàn)的改進(jìn)切線(xiàn)角的概念,對(duì)改進(jìn)切線(xiàn)角作進(jìn)一步改進(jìn),并以此作為判據(jù),結(jié)合衛(wèi)星實(shí)時(shí)監(jiān)測(cè)的手段,對(duì)滑坡體的穩(wěn)定性進(jìn)行分析,此種方案具有監(jiān)測(cè)方法穩(wěn)定直觀,分析結(jié)果實(shí)時(shí)可靠的優(yōu)勢(shì)。以四川省都江堰市塔子坪滑坡為研究對(duì)象,依據(jù)滑坡體表面位移-時(shí)間曲線(xiàn)的變形規(guī)律,結(jié)合實(shí)地監(jiān)測(cè)數(shù)據(jù)對(duì)塔子坪滑坡的切線(xiàn)角進(jìn)行分析,從而劃分滑坡體的各變形階段。依據(jù)滑坡體的表面位移規(guī)律及宏觀變形情況對(duì)滑坡的變形機(jī)制進(jìn)行分析,確定其運(yùn)移形式。結(jié)合滑坡體的運(yùn)移機(jī)制對(duì)滑坡進(jìn)行加固治理。并通過(guò)對(duì)滑坡體加固前后的數(shù)據(jù)相對(duì)比,論證了滑坡體重力擋墻治理方法的可行性,并得出了治理后的滑坡體目前已趨于穩(wěn)定狀態(tài)的結(jié)論。
[Abstract]:Landslide is one of the most serious geological disasters in the world. At the same time, China is one of the countries with the most extensive distribution, the most frequent occurrence and the most serious degree of landslide geological disasters in the world. Every year, the economic losses caused by landslide and debris flow and other geological disasters amount to more than 10 billion yuan, and hundreds of people are killed, which poses a great threat to the economic development of the country and the safety of people's lives and property. Therefore, the monitoring, warning and stability evaluation of landslide disasters have gradually become a common concern. In the single landslide stability evaluation, displacement is the most intuitive reflection of landslide stability, and the deformation measurement method is simple, so it attracts more and more attention in landslide monitoring and early warning. In view of the complexity and uncertainty of landslide stability evaluation at present, an improved tangent angle based on accumulative displacement-time characteristic curve is introduced in this paper. The improved tangent angle is further improved and used as a criterion. The stability of landslide body is analyzed by means of satellite real-time monitoring. The method is stable and intuitive, and the analysis results are real-time and reliable. Taking the Taziping landslide in Dujiangyan City, Sichuan Province as the research object, according to the deformation law of the displacement-time curve on the surface of the landslide, and combining with the monitoring data on the spot, the tangent angle of the Taziping landslide is analyzed, and the deformation stages of the landslide are divided. According to the law of surface displacement and macroscopic deformation of landslide, the deformation mechanism of landslide is analyzed and its migration form is determined. Combined with the migration mechanism of landslide, the landslide is strengthened and treated. By comparing the data before and after the reinforcement of the landslide body, the feasibility of the treatment method of the gravity retaining wall of the landslide body is demonstrated, and the conclusion that the landslide body has become stable after the treatment is obtained.
【學(xué)位授予單位】：西南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：P642.22
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本文編號(hào)：1820223