2 . It has realized the goal of rapid excavation and set the best record in one ?heading driving in China during the construction of parallel adit in hard rock with large cross section due to its advancement and resonableness

• 由于其机械化设备配套的先进性和合理性,使得工程进展顺利,实现了快速掘进的目的,创造了我国大断面平导硬岩独头掘进的全国记录。