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首页> 外文期刊>Acta Geologica Sinica - English Edition >Quantitative Zoning Assessment of Crustal Stability Along the Yunnan–Tibet Railway Line, Western China
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Quantitative Zoning Assessment of Crustal Stability Along the Yunnan–Tibet Railway Line, Western China

机译：滇藏铁路沿线地壳稳定性定量分区评估

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摘要

The planned Yunnan–Tibet railway goes through the northwest of Yunnan Province and the southeast of the Tibet Autonomous Region. Because of its location near the collision belt of the Eurasian and Indian plates, complex engineering geological conditions and difficult engineering geological problems are encountered. The study is aimed at making the zoning assessment of crustal stability along the railway line so as to provide a better base for its construction, especially its line selection. For this purpose, the following seven influencing factors of crustal stability were selected and quantified by grading and scoring: active fault, seismic activity, geo-stress field, geo-strain field, geothermal field, geo-hazard, and lithologic character. Of these factors, the active fault, seismic activity and geo-hazard are the three most prominent factors influencing the railway construction. Along the railway line there are 1731703 calculation units to be divided. The zoning assessment calculation was completed by ArcGIS-based information fusion method. The assessment results aid railway line selection and show that there are 10 stable sectors, 28 relatively stable sectors, 23 relatively unstable sectors, and 20 unstable sectors along the Yunnan–Tibet railway line.
机译：计划中的滇藏铁路穿越云南省西北部和西藏自治区的东南部。由于其位于欧亚板块和印度板块碰撞带附近，因此遇到了复杂的工程地质条件和困难的工程地质问题。该研究旨在对沿铁路地壳稳定性进行分区评估，以便为其构造，尤其是其选线提供更好的基础。为此，选择了以下七个影响地壳稳定性的因素，并通过等级和评分进行量化：活动断层，地震活动，地应力场，地应力场，地热场，地质灾害和岩性。在这些因素中，活动断层，地震活动和地质灾害是影响铁路建设的三个最突出的因素。沿铁路线有1731703个计算单位要划分。分区评估计算是通过基于ArcGIS的信息融合方法完成的。评估结果有助于铁路线的选择，并显示云藏铁路沿线有10个稳定区间，28个相对稳定区间，23个相对不稳定区间和20个不稳定区间。

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