隧洞开挖 meaning in Chinese

tunneling operation

Numerical analysis of coupled hydro - mechanical processes in deformed fractured porous media during tunnel excavation
隧洞开挖过程中的裂隙多孔介质水力耦合分析
The application of the new austrian tunneling method to the tunneling of the diversion tunnel for dalong water control project is described herein
摘要主要介绍新奥法施工在三亚大隆水利枢纽工程导流隧洞开挖中的应用。
Excavation of tunnel will lead to local geotectonic stress release and redistribution around tunnel ; the appearance of new outlet boundary will lead to outlet seepage of subsurface water and the change of mountain seepage field
隧洞开挖将引起局部地应力的释放及洞周附近的地应力的重新分布；隧洞开挖后新的出水边界的出现将导致地下水的大量出渗及山体渗流场的改变。
In the process of construction , some special geological hazards will be met because of the great depth and long distance , such as high external waterpressure , watergushing , high geostress , rockburst , high geotemperature and nocuous gas and so on . these geological hazards become the main restricted factors of tunnel construction
大埋深将使隧洞开挖施工时遭遇到如高外水压及高压涌水、高地应力及岩爆、高地温、高瓦斯有害气体等一系列地质灾害问题，这成为制约深埋隧洞建设快速发展的主要因素。