Study on Engineering Geological Characteristics of Water Bursting from Tuff of Zhejiang Cangling Tunnel
LI Zhong 1，YANG Wei-xun 2
1 .Shijiazhuang Railway Institute, Shijiazhuang, Hebei 050043，China; 2. The 15th Engineering Group Co. Ltd of China Railway, Luoyang, Henan 471000. China
Abstract：Research purposes: The studies are done on the causes, characteristics and main control factors of water bursting from tuff in construction Zhejiang Cangling Tunnel for the purposes of doing prediction and treatment of it.
Research methods: Based on the site geological survey information about water bursting of Cangling Tunnel, the concrete analyses are made for the scale , location , causes and geological conditions of water bursting and the explorations are made on the characteristics of composite of surrounding rock, geological structure, modern structural stress field and underwater from the view of geological engineering point in order to seek the regularity of water bursting and better treatment.
Research results: Water bursting in Gangling Tunnel is controlled by the geological conditions in the zone. Although tuff is not dissolved in water, but the special structure formed under the effect of modem stress field provides the passage and stored area for the underwater. This is the main cause for water bursting. Therefore，the geological prediction in advance system with TSP-203 and relative marks for it should be established and relative measures should be taken with the principle of ”Drainage first and grouting block second".
Research conclusions: For the soil and water disasters occurred in tunnel, first, the research should be done on the engineering geology，then the prediction and treatment should be carried out
李忠,杨维训. 浙江苍岭隧道左线凝灰岩突水现象工程地质特征研究[J]. 铁道工程学报, 2007, 24(7): 16-19.
LI Zhong,YANG Wei-xun. Study on Engineering Geological Characteristics of Water Bursting from Tuff of Zhejiang Cangling Tunnel. 铁道工程学报, 2007, 24(7): 16-19.
2007, Vol. 24 
版权所有 © 2014 《铁道工程学报》编辑部