Application of self drilling anchor in building foundation

Self drilling anchor as a kind of simple, reliable, practical and efficient construction method. The micro pile technique is a reliable system that can bear large axial or lateral loads. And it has little interference on the the existing structure. The self drilling anchor bolt is used in the foundation engineering. When the self drilling […]

Underground Diaphragm Wall Features in Deep Foundation Pit Supporting Design

During excavation of deep foundation pit, underground diaphragm wall has functions of seepage-prevention, earth retaining and load bearing. Its specific features are as following: 1. Its stiffness is benefit for controlling deformation of foundation pit, especially for foundation pit engineering with narrow space and strict requirement in deformation. 2. It has strong impermeability and vertical […]

The Supporting Theory of Anchor Bolt

The application of anchor bolt in mining industry can track back to the 1930s. Belonging to active supporting, anchor bolt can transform surrounding rock of roadway into supporting body. It has strong adaptability and small deformation. It can ensure safety in production and has brought great economic and social benefit. There are several supporting theories […]

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 […]

Geotechnical Engineering Investigation of Subway

Subway is short for underground railway, referring to urban rail transport system working underground. While in actual, some lines of subway will be laid ground because of construction environment. The purpose of investigating geotechnical engineering is to ascertain engineering geological condition and hydrogeological condition along the subway and auxiliary project, helping to provide basic data […]

Applicable Strata and Advantages of Hollow Bar Anchor

Generally speaking, hollow bar anchor is suitable for all the strata that retaining wall and soil nail wall and also the prestressed cable bolt can apply to . For the anchoring technology which has drilling operation requirements, drilling is usually the most critical process and directly affect the bearing capacity of the hollow bar. Drilling […]