GB 50086-2001 Technical Code for Bolt Shotcrete Support
1.0.1 and 1.0.2 bolt shotcrete support (referred to as bolt shotcrete support for short) has been widely used in domestic underground projects, and has received obvious technical and economic effects. However, due to the lack of a complete and unified technical specification in China, the design of the anchor shotcrete support project is conservative, the project investment is increased inappropriately, the design and construction are improper, the project quality is poor, and there are many examples of phenomena endangering the safe use, and even the cases of tunnel wall fragmentation, roof fall, and serious loss of national property occur from time to time. This specification is formulated to make the design, construction and acceptance of anchor shotcrete support have a unified national standard, meet the requirements of advanced technology, economy, rationality, safety, application and quality assurance, and better promote the development of underground engineering construction.
