【摘要】：近年來(lái),為響應(yīng)國(guó)家號(hào)召,西部大開(kāi)發(fā)如火如荼。四川地區(qū)如鐵路、公路等基礎(chǔ)設(shè)施建設(shè)不斷開(kāi)展,大面積的紅層泥巖區(qū)是工程勘察及設(shè)計(jì)過(guò)程中必須要面對(duì)的一個(gè)難題。眾所周知,四川地區(qū)紅層泥巖廣泛分布,主要形成于侏羅系和白堊系,具有較差的物理力學(xué)性能。然而,穩(wěn)定的行車環(huán)境與優(yōu)良的路基填料是息息相關(guān)的,科學(xué)合理的對(duì)四川地區(qū)紅層泥巖進(jìn)行評(píng)價(jià)和工程利用,一方面不僅節(jié)約大量的工程資金、減少填料換填,另一方面也很大程度的保護(hù)了當(dāng)?shù)厣絽^(qū)的地質(zhì)環(huán)境。開(kāi)展四川地區(qū)紅層泥巖路用性研究是十分有意義的�；谝延械膶W(xué)術(shù)研究成果對(duì)四川地區(qū)紅層泥巖物理力學(xué)相關(guān)性指標(biāo)進(jìn)行搜集、篩選及整理,依托地理信息系統(tǒng)(GIS)理論,在ArcGIS10.1軟件平臺(tái)上創(chuàng)建四川地區(qū)紅層泥巖路用性評(píng)價(jià)因子數(shù)據(jù)庫(kù)。專家分析法結(jié)合同行給各評(píng)價(jià)因子賦值,制作評(píng)價(jià)因子GIS圖件。通過(guò)AHP法構(gòu)造判別矩陣,為各評(píng)價(jià)因子賦予權(quán)重,并進(jìn)行了一致性檢驗(yàn)。在紅層泥巖的路用性評(píng)價(jià)中,借助GIS在數(shù)據(jù)存儲(chǔ)、處理分析、計(jì)算及統(tǒng)計(jì)等多方面的強(qiáng)大功能對(duì)各評(píng)價(jià)因子圖件進(jìn)行權(quán)重疊加分析,通過(guò)對(duì)圖件的多層次操作,繪制了四川地區(qū)紅層泥巖路用性評(píng)價(jià)圖并結(jié)合圖件進(jìn)行了路用性的評(píng)價(jià)說(shuō)明。本文對(duì)四川地區(qū)紅層泥巖進(jìn)行分區(qū),劃為盆北西南區(qū)、盆中區(qū)、盆東區(qū)及攀西區(qū)四個(gè)大區(qū)。分析紅層泥巖的物質(zhì)成分,進(jìn)行紅層研究區(qū)工程環(huán)境特征的討論,說(shuō)明了紅層泥巖較差的物理力學(xué)性能。在ArcGIS10.1軟件平臺(tái)得出的路用性評(píng)價(jià)圖件的基礎(chǔ)上,劃分了研究區(qū)及各分區(qū)內(nèi)紅層泥巖的路用性等級(jí)程度及其在區(qū)位上的分布。此外,統(tǒng)計(jì)分析了研究區(qū)及各分區(qū)不同路用性程度的區(qū)域面積及比重。最后,以交通需求性為背景,通過(guò)分析研究區(qū)及分區(qū)現(xiàn)有交通及未來(lái)規(guī)劃交通線里程,提出了“貢獻(xiàn)率”概念,進(jìn)一步說(shuō)明四川地區(qū)紅層泥巖路用性評(píng)價(jià)結(jié)果具有較好的工程應(yīng)用價(jià)值。該研究結(jié)論不僅對(duì)四川地區(qū)公路、鐵路建設(shè)中路基填料的選用上有一定的指導(dǎo)意義,對(duì)類似紅層泥巖地區(qū)在工程建設(shè)上也提供一定的理論依據(jù)。
[Abstract]:In recent years, in response to the call of the country, the development of the western region is in full swing. In Sichuan area, such as railway, highway and other infrastructure construction, a large area of red mudstone area is a difficult problem that must be faced in the process of engineering investigation and design. It is well known that red mudstone is widely distributed in Sichuan area, mainly formed in Jurassic and Cretaceous, and has poor physical and mechanical properties. However, the stable driving environment is closely related to the fine subgrade filling. On the one hand, the evaluation and engineering utilization of red layer mudstone in Sichuan is scientific and reasonable. On the one hand, it not only saves a lot of engineering funds, but also reduces the filling replacement. On the other hand, it also protects the geological environment of the local mountainous area to a great extent. It is of great significance to study the road use of red mudstone in Sichuan area. Based on the existing academic research results, the physical and mechanical correlation indexes of red mudstone in Sichuan area are collected, screened and sorted out, and based on the (GIS) theory of geographic information system, A database of evaluation factors for road use of red mudstone in Sichuan is established on the platform of ArcGIS10.1. Expert analysis method combined with peers to assign value to each evaluation factor, make evaluation factor GIS map. The discriminant matrix is constructed by AHP method, and the weight of each evaluation factor is given, and the consistency test is carried out. In the evaluation of road performance of red mudstone, with the help of the powerful functions of GIS in data storage, processing and analysis, calculation and statistics, the weight superposition analysis of each evaluation factor map is carried out, and the multi-level operation of the map is carried out. The evaluation map of road performance of red layer mudstone in Sichuan area is drawn and the evaluation explanation of road performance is given in combination with the map. In this paper, red mudstone in Sichuan area is divided into four regions: southwest of basin north, middle of basin, east of basin and Panxi area. The material composition of red mudstone is analyzed and the engineering environmental characteristics of red bed study area are discussed. The poor physical and mechanical properties of red bed mudstone are explained. On the basis of the evaluation map of road performance obtained by ArcGIS10.1 software platform, the paper divides the grade of road performance of red mudstone in the study area and each district and its distribution in location. In addition, the area and proportion of different road use degree were analyzed statistically. Finally, taking the traffic demand as the background, the paper puts forward the concept of "contribution rate" by analyzing the existing traffic and future planning of traffic line mileage in the research area and district. It is further explained that the evaluation results of road use of red mudstone in Sichuan area have good engineering application value. The conclusion not only has certain guiding significance for the selection of subgrade filler in highway and railway construction in Sichuan area, but also provides certain theoretical basis for engineering construction in areas similar to red mudstone.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：P208;U414

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本文編號(hào)：2238471