Its extracting method includes surface well drilling and underground mine tunnelling. The tunnelling method is suitable for many mine areas in our country.
开发煤层气的方法有地面钻井开采和井巷开采两种，其中井巷开采方法适用于我国许多矿区。
Shallow buried-tunnelling method was used in the construction of high discharge pressure culvert for the first time and developed a new construction method in urban water distribution project.
在设计中将浅埋暗挖技术首次应用于大流量有压输水暗涵，进一步拓展了适用于城市输水工程的工程技术手段。
The expressway tunnels construction in Henan province used new Austrian tunnelling method, which emphasized on site monitoring and measuring, and improving design and construction using the results.
河南某高速公路隧道工程全部采用新奥法施工，该施工方法的特点之一是注重现场监控量测，并利用量测结果及时补充设计和指导施工。
Based on fuzzy sets theory and tunnelling data bank, a fuzzy analogy method for design of rock support system in tunnelling is presented in this paper.
本文运用模糊数学理论，提出一种利用既有工程数据库设计隧道围岩支护系统的“模糊类比”方法。
The limit displacements of tunnelling is influenced by surrounding rock, tunnelling size and shape, supported structure form and thickness, constructing method and failure form.
隧道的极限位移不仅与围岩类别有关，还与洞室大小、形状、支护形式、支护厚度、施工方法和破坏状态等因素有关。
Poor geologic condition, improper positioning in design and incorrect construction method will lead to landslide in tunnelling.
隧洞施工中由于地质不良、设计定位不当、施工方法不正确易引起塌方。
Poor geologic condition, improper positioning in design and incorrect construction method will lead to landslide in tunnelling.
隧洞施工中由于地质不良、设计定位不当、施工方法不正确易引起塌方。
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