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本文以安居隧道调查坑为实例,阐述了开挖隧道时遇到的高热带、高水压低速度带等难题及其克服措施。文中强调了地质探查在调查坑的施工前、施工中一直起着非常重要的作用。施工前,通过地形地质勘测、制定施工方案;施工中,遇到开挖进行不下去的困难局面时,也是通过再探查的结果,修正施工方案、制定应急措施。尤其是在处理高热、涌水等过程中的具体措施,无一不是通过地质的调查,才使施工得以继续进行。 调查坑最后安全、顺利贯通,得出了很多在高热带及高水压低速度带开挖隧道的经验、教训,以资今后在类似隧道施工时参考。
In this paper, Anju tunnel investigation pit as an example, elaborated on the encountered in the excavation of the tunnel of high tropical, high pressure and low speed belt and other problems and overcome the measures. The paper emphasizes that geological exploration has played a very important role in construction before the construction of investigation pit. Before construction, through the topographic and geological survey, formulate the construction plan; during the construction, when encountering the difficult situation of not digging, it is also through re-probing results to amend the construction plan and make emergency measures. In particular, concrete measures in the process of handling hot water and gushing water are all conducted through geological investigations so that construction can continue. The investigation pit finally went through safely and smoothly and gained many experiences and lessons learned in tunnel excavation with high tropical and high hydraulic pressure and low speed.