丽香铁路莲花山岩溶隧道方案地质比选研究  

Research on the Geologic Comparison for Schemes of Lianhuashan Karst Tunnel on Lijiang-Xianggelila Railway

作　　者：张广泽[1] 段光武[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道工程学报》2009年第6期86-90,106,共6页Journal of Railway Engineering Society

摘　　要：研究目的:查明莲花山岩溶隧道的水文地质条件,提出安全可行的隧道选线原则。研究结论:(1)控制隧道方案的主要因素是黑龙潭岩溶径流带。该岩溶径流带以泉群形式排泄于丽江古城北象山坡麓的黑龙潭,泉水主要来自九子海、腊日光、红水塘一带约121 km2洼地区的大气降水补给。该岩溶径流带属相对独立的脉状径流,为深岩溶形成,水力坡度很小,流速缓慢。(2)隧道的选线原则:应以岩溶水对隧道的危害及隧道开挖对岩溶水系的影响为研究重点,尽量避开大型溶蚀盆地、溶蚀洼地等集中汇水区,避开靠近补给区的岩溶径流带上游;在进洞前应通过展线拔高线路,使隧道从靠近排泄区的岩溶安全带内通过。Research purposes： The safe and feasible principle on the route selection for Lianhuashan Tunnel is put forward based on finding out the hydrogeologic conditions of Lianhuashan tunnel Research conclusions： （ 1 ） The main influence factor for the tunnel scheme is the Heilongtan karst runoff which drains as spring groups to Heilongtan at the foot of Xiangshan Mountain, north of the ancient city Lijiang. The spring water is mainly supplemented by atmosphere precipitation in about 121 km2 karst depression zone, including Jiuzihai, Lariguang and Hongshuitang areas. This karst runoff zone is a relatively independent vein runoff with a small hydraulic gradient and low flowing velocity. （2） The principle of route selection for the tunnel： Based on the researches on the harm of karst water to the tunnel and the influence of the tunnel excavation on the karst water system, the tunnel route should keep away from water concentrating area like large - scale corrosion basin or depression etc. and upriver karst runoff zone close to the recharging area. The route in front of the tunnel line should be heightened, so that the tunnel can pass safely through the karst safe area close to the drainage area.

关 键 词：深部岩溶水 补给 径流 排泄 隧道方案比选 

分 类 号：U212.22[交通运输工程—道路与铁道工程]