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井巷掘进 [jǐng hàng jué jìn]
[矿业] excavation
- 对于隧道和煤矿井巷的安全掘进，超前预报显得特别重要。
It is very important for safely tunnelling of tunnel and coal mine lane to apply advanced forecasting technology. - 本文分析了光面爆破技术在井巷掘进中应用的结果和作用；
This article analyzed that the technique of smooth blasting applies in the roadway drivage with the result and function; - 介绍了防渗帷幕灌浆工艺的支护机理，及在某矿软粘土质岩石巷道掘进中应用的施工方法、技术方案、工程效果，对类似岩性的井巷掘进具有参考价值。
Construction methods, technique projects, and practice case are introduced that applied in shaft and lane excavation in soft muddy clay rock in Dongxiang Copper Mine .
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