tunnel heading 隧道工作面
heading pilot tunnel 隧道导坑
heading pilot tunnel detail 隧道导坑
I see a little light at the end of the tunnel. That's where I'm heading.
我看到眼前隧道的终点有一丝丝的光线,那是我的方向。
Design code and key technical points for main tunnel and parallel heading of East Qinling Super-long Tunnel are introduced.
介绍东秦岭特长隧道工程正洞及平行导坑的设计标准、施工技术要点。
According to the support result of bolting with wire support and resin anchor used in heading along goaf provide a reference for the tunnel design and support.
根据锚索支护独特的支护效果,再配合树脂锚杆在沿空掘巷道支护中的运用及所达到的效果,为今后矿井巷道设计及支护提供一定的参考。
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