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- Title
川藏铁路鲜水河构造带地质选线研究.
- Authors
王哲威; 徐正宣; 冯涛; 刘威; 张羽军; 林之恒; 刘志军; 刘建国; 王栋; 袁东; 方振华; 赵江林
- Abstract
The Kangding segment of the Sichuan-Tibet Railway passes through the Xianshuihe active structural system, where a series of significant engineering geological problems exist such as intensive earthquake and active faults, high-level slippage flow, unstable high and steep bank slopes, high geostress, rockburst and large deformation, high geo-temperature and high stress water inrush. This segment possesses the greatest seismic and geological risks. and it is difficult to find proper reference. Based on the selecting process for ten years, we have chosen the feasible and safe plan of the Sandaoqiao station, Zheduoshan crop and Zheduoshan Mountain tunnel. In this study, through a systematic geological line selection in the Xianshuihe structural belt, we sum up the geological line selection should follow the order of regional stability line selection, engineering geological disasters over ground line selection, "very difficult" engineering geological problems in underground engineering geological line selection, integrated geological line selection, cross line selection etc. Based on the fundamental line selection, structure, lithology and groundwater should be considered. Giving priority to give way and then passing through are suggested in the deep and large fault. Considering the effects of lithology, defective engineering rock mass ( soluble rock, alteration rock and structural soft rock) should be avoided and the hard engineering rock mass is preferred. Considering groundwater, karst groundwater area should shorten the length of horizontal circulating band, groundwater rich area should build line in side and high areas and discharge groundwater along slope, geothermal anomaly area should choose low temperature gallery. This achievement can provide a reference for the constructions of the Jinshajiang suture and Jiali structural belt of the Sichuan-Tibet railway and planed Yunnan-Tibet railway.
- Publication
Journal of Engineering Geology / Gongcheng Dizhi Xuebao, 2021, Vol 29, Issue 2, p466
- ISSN
1004-9665
- Publication type
Article
- DOI
10.13544/j.cnki.jeg.2021-0132