上图显示的是一台巨型隧道掘进机在工作，两条隧道正在贯通。
In the above image, one of the huge tunnel-boring machines is shown just as it breaks through to one of the completed sections of the tunnel.
介绍长沙市芙蓉路电缆隧道e标段掘进的爆破参数、工作面炮孔布置形式及起爆方式。
This paper deals with the blasting parameters, working face blast hole patterns and the initiating system in the E-Bid section of the Furong Road Cable Tunnel Construction Project in Changsha.
根据风杌的相似定律，阐述了特长隧道掘进通风的特性，详细分析了风机变频工作的能耗。
According to the law of similarity of fan, the characteristic of long-distance tunneling ventilation was analyzed, and the energy consumption of variable frequency fan was described.
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