Yanggu Yihui Drilling Tools Co.,Ltd.
ADDRESS:No.216 Zhengyang Road, Qingdao, Shandong,China.
Complex geological conditions such as weak surrounding rock, fault fractured zone, high in-situ stress and large deformation are ubiquitous in all kinds of underground engineering, which brings great difficulties to rock anchor construction, especially in the case of serious collapse and the need for extra-long bolts, the general bolt is powerless. Self-drilling bolt integrates the functions of drilling, grouting and anchoring. It can improve the surrounding rock well and achieve ideal supporting effect in the treatment of tunnel advanced support and various slope treatment, high geostress and large deformation and other diseases.