西南某铁路高烈度地震山区地质选线研究
发布时间：2018-12-13 00:52
【摘要】：在建西南某铁路通过平原、丘陵及其陡峻的高山峡谷区,穿越发生过强烈地震的D1断裂带,D3褶断带,构造背景复杂,内外动力地质作用强烈,不良地质分布广类型多、规模大,复杂的地形、地质条件给铁路选线带来了严峻的挑战。根据铁路所经地区的特殊地质区域和地质环境,进行高烈度地震山区地质选线研究,具有重要的指导意义。 本论文以铁路区域地质背景为基础,分析了控制铁路地质选线的主要因素,包括地形地貌、地震、活动断裂及次生地质灾害,这些因素对铁路地质选线具有重大影响。论文先介绍了铁路的宏观走向,主要结合区域地质情况综合比选了线路的两大宏观走向方案。 论文针对铁路地质选线的控制因素,结合具体工点实例,根据前人总结出的地质选线原则,提出了以下几条地质选线技术：活动断裂及发震断裂带选线技术,高烈度地震山区越岭选线技术,高烈度地震山区河谷内移选线技术和不良地质地区的选线技术。确定了线路在经过D1断裂、D2断裂及D3断裂三大主要断裂,越岭地段,高山峡谷段及高原河谷段,不良地质地区的合理走向,最大限度保证线路经过路段的安全性,减少或避免地震及次生地质灾害对铁路工程的破坏。 通过对西南某铁路的地质选线研究,总结出一套适合于高烈度地震山区的地质选线技术,这些研究成果也为以后铁路经过复杂地形、地质条件地区遇到类似问题如何解决时提供了重要参考价值。
[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.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U212.32
本文编号：2375559
[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.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U212.32
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