浅埋、软弱围岩隧道下穿地表建(构)筑物控制爆破施工工法
천매、연약위암수도하천지표건(구)축물공제폭파시공공법
Shallow Submersion, Under the Weak adjacent Formation Tunnel Puts on the Surface to Construct (construction) to Build the Controlled Blasting Construction Labor Law