Expansion Shell Rock Bolting in TBM of Tunnel Construction

Diversion tunnel has characteristics of deep burial depth, high crustal stress and complex geological condition. Also, converging deformation is large at segment of deep burial depth, fault and crushed zones are many, joint is complex. So, it needs immediate support after excavation. During tunnel construction, mortar rock bolting can’t provide immediate support, supporting force of […]

Koukoutamba Hydropower Project in Guinea

On May 5, it’s reported by Guinean media that Organisaiton pour la Mise en Valeur du Fleuve Senegal (OMVS, including Senegal, Mali, Mauritania and Guinea) published public announcement for bidding of Koukoutamba Hydropower Project in Guinea and many foreign enterprises had participated in this bid. Koukoutamba Hydropower Project is located on Bafing River in the […]