發(fā)布時(shí)間：2018-06-22 22:39

  本文選題：煤矸石路堤 + 現(xiàn)場(chǎng)試驗(yàn)��； 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：我國是世界第一產(chǎn)煤大國,每年都有大量成品煤的生產(chǎn)。煤矸石即是在產(chǎn)煤過程中遺留的固體廢棄物,它具有排放量大、占地多、污染環(huán)境等特點(diǎn),嚴(yán)重影響產(chǎn)煤地區(qū)人們的生活和身體健康。國內(nèi)外學(xué)者對(duì)煤矸石進(jìn)行長(zhǎng)期的研究后發(fā)現(xiàn)將煤矸石作為路堤填料,即能夠解決山區(qū)路段缺土填筑路堤的問題,又能改善當(dāng)?shù)厣鷳B(tài)環(huán)境,并且還具有一定的經(jīng)濟(jì)效益。 論文以安邵高速公路煤矸石路堤實(shí)體工程為依托,以湖南婁底地區(qū)的煤矸石為研究對(duì)象,在查閱了一定量的國內(nèi)外文獻(xiàn)資料的基礎(chǔ)上,對(duì)煤矸石的材料特性、現(xiàn)場(chǎng)路堤試驗(yàn)、包邊煤矸石路堤穩(wěn)定性、煤矸石路基下涵洞病害和煤矸石施工技術(shù)展開了相關(guān)研究。主要研究?jī)?nèi)容和結(jié)論如下： 1.對(duì)煤矸石的屬性進(jìn)行定位,從顆粒級(jí)配和塑性指標(biāo)劃分了煤矸石的分類,分析了其物理和化學(xué)特性,還重點(diǎn)分析了煤矸石的力學(xué)特性,為后期現(xiàn)場(chǎng)試驗(yàn)做指導(dǎo)。 2.通過煤矸石路堤現(xiàn)場(chǎng)試驗(yàn),對(duì)煤矸石路堤的沉降、側(cè)向位移、垂直向土壓力、水平向土壓力和路堤擋墻側(cè)位移進(jìn)行觀測(cè),分析試驗(yàn)結(jié)果后確定了在安邵高速填筑煤矸石路堤的可行性。 3.對(duì)比安邵高速煤矸石路堤TJ2標(biāo)K127+700(有包邊),K127+720(無包邊)兩剖面的土壓力和變形試驗(yàn)結(jié)果,結(jié)合包邊煤矸石路堤穩(wěn)定性計(jì)算方法和FLAC3D模擬結(jié)果對(duì)比,得出填筑高度和包邊與否對(duì)煤矸石路堤穩(wěn)定性影響曲線。 4.分析溆懷高速公路K124+760處煤矸石路基下涵洞病害實(shí)例,探究煤矸石作為路堤填料的不足,提出了煤矸石路堤施工技術(shù)的相關(guān)防治措施。
[Abstract]:Abstract: China is the world's largest coal-producing country, there are a large number of finished coal production every year. Coal gangue is a kind of solid waste which is left over in the process of coal production. It has the characteristics of large emission, large land occupation and pollution of environment, which seriously affects the life and health of people in coal-producing areas. After long-term research on coal gangue at home and abroad, it is found that using gangue as embankment filler can solve the problem of filling embankment without soil in mountain sections, improve the local ecological environment, and also have certain economic benefits. Based on the solid engineering of coal gangue embankment of An-Shao Expressway, and taking the gangue in Loudi area of Hunan Province as the research object, on the basis of consulting a certain amount of literature at home and abroad, the material characteristics of coal gangue and the field embankment test are studied. The stability of coal gangue embankment, culvert disease under coal gangue roadbed and construction technology of coal gangue are studied. The main contents and conclusions are as follows: 1. In this paper, the attribute of coal gangue is orientated, the classification of coal gangue is divided from particle gradation and plastic index, the physical and chemical characteristics of coal gangue are analyzed, and the mechanical properties of coal gangue are analyzed emphatically, which can be used as guidance for later field test. 2. The settlement, lateral displacement, vertical earth pressure, horizontal earth pressure and lateral displacement of coal gangue embankment were observed by field test of coal gangue embankment. The feasibility of filling coal gangue embankment at Anshao high speed is determined by analyzing the test results. Comparing the test results of earth pressure and deformation of TJ2 standard K127700 (with envelope) and K127720 (without embankment) of An-Shao high speed gangue embankment, combining with the calculation method of stability of coal gangue embankment and the result of FLAC3D simulation, The influence curve of filling height and embankment on the stability of coal gangue embankment is obtained. 4. This paper analyzes the examples of culvert diseases in K124760 coal gangue subgrade of Yuhuai Expressway, probes into the shortage of coal gangue as embankment filler, and puts forward the relevant prevention measures of construction technology of coal gangue embankment.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.12;U449

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本文編號(hào)：2054501