【摘要】：在建西南某鐵路通過平原、丘陵及其陡峻的高山峽谷區(qū),穿越發(fā)生過強(qiáng)烈地震的D1斷裂帶,D3褶斷帶,構(gòu)造背景復(fù)雜,內(nèi)外動(dòng)力地質(zhì)作用強(qiáng)烈,不良地質(zhì)分布廣類型多、規(guī)模大,復(fù)雜的地形、地質(zhì)條件給鐵路選線帶來了嚴(yán)峻的挑戰(zhàn)。根據(jù)鐵路所經(jīng)地區(qū)的特殊地質(zhì)區(qū)域和地質(zhì)環(huán)境,進(jìn)行高烈度地震山區(qū)地質(zhì)選線研究,具有重要的指導(dǎo)意義。 本論文以鐵路區(qū)域地質(zhì)背景為基礎(chǔ),分析了控制鐵路地質(zhì)選線的主要因素,包括地形地貌、地震、活動(dòng)斷裂及次生地質(zhì)災(zāi)害,這些因素對(duì)鐵路地質(zhì)選線具有重大影響。論文先介紹了鐵路的宏觀走向,主要結(jié)合區(qū)域地質(zhì)情況綜合比選了線路的兩大宏觀走向方案。 論文針對(duì)鐵路地質(zhì)選線的控制因素,結(jié)合具體工點(diǎn)實(shí)例,根據(jù)前人總結(jié)出的地質(zhì)選線原則,提出了以下幾條地質(zhì)選線技術(shù)：活動(dòng)斷裂及發(fā)震斷裂帶選線技術(shù),高烈度地震山區(qū)越嶺選線技術(shù),高烈度地震山區(qū)河谷內(nèi)移選線技術(shù)和不良地質(zhì)地區(qū)的選線技術(shù)。確定了線路在經(jīng)過D1斷裂、D2斷裂及D3斷裂三大主要斷裂,越嶺地段,高山峽谷段及高原河谷段,不良地質(zhì)地區(qū)的合理走向,最大限度保證線路經(jīng)過路段的安全性,減少或避免地震及次生地質(zhì)災(zāi)害對(duì)鐵路工程的破壞。 通過對(duì)西南某鐵路的地質(zhì)選線研究,總結(jié)出一套適合于高烈度地震山區(qū)的地質(zhì)選線技術(shù),這些研究成果也為以后鐵路經(jīng)過復(fù)雜地形、地質(zhì)條件地區(qū)遇到類似問題如何解決時(shí)提供了重要參考價(jià)值。
[Abstract]:A railway in southwest China passes through plains, hills and steep mountain canyons, crosses D1 fault zone with strong earthquakes, D3 fold fault zone, complicated tectonic setting, strong dynamic geological action inside and outside, and many types of bad geological distribution. Large scale, complex terrain and geological conditions bring severe challenges to railway route selection. According to the special geological area and geological environment of the railway area, it is of great significance to study the geological line selection in the mountainous area of high intensity earthquake. Based on the regional geological background of railway, this paper analyzes the main factors controlling railway geological route selection, including topography, geomorphology, earthquakes, active faults and secondary geological disasters, which have great influence on railway geological route selection. This paper first introduces the macro trend of railway, and mainly compares the two macro strike schemes of railway line with regional geological conditions. Aiming at the control factors of railway geological route selection, combined with practical examples, according to the geological route selection principles summarized by predecessors, this paper puts forward the following geological line selection techniques: active fault and seismogenic fault zone line selection technology. High-intensity seismic mountain area cross-ridge line selection technology, high-intensity seismic mountain valley line selection technology and poor geological area line selection technology. The reasonable strike of the line through the D1 fault, D2 fault and D3 fault, the cross-ridge section, the high mountain canyon section and the plateau valley section, the bad geological area is determined, and the safety of the passage section is guaranteed to the maximum extent. Reduce or avoid damage to railway projects caused by earthquakes and secondary geological disasters. Through the study of geological route selection of a railway in southwest China, a set of geological route selection techniques suitable for high intensity seismic mountain areas are summarized. These research results are also for the complicated topography of the railway in the future. How to solve the similar problems in geological condition areas provides important reference value.
【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】：2012
【分類號(hào)】：U212.32

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