Several preparing works to be done of SDA bolt engineering

24/lug/2017 11.24.42 sinorockzqq Contatta l'autore

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The fundamental principle of geotechnical anchoring is to transfer tension of structures or keep self stability of excavation face in stratum, relying on shearing strength of hollow anchor bolts surrounding stratum.

Before construction of self drilling anchor bolt, there are several preparing works to be done:

1. Master conditions of basic and underground pipelines in construction area.

2. Judge adverse effects from self drilling anchor construction to surrounding structures and pipelines. Relevant precaution measures should be planned, in advance. 

3. Test self drilling anchor’s production craft, methods of tension and lock, equipment.

4. Identify grouting craft and grouting equipment.

5. Check raw materials’ variety, quality, model and inspection report. 

Main construction equipment during process are drilling machine and grouting equipment. Before equipment entering construction site, they should be checked completely. 

There are two kinds of professional people at construction site: technical operator and contributor. To guarantee their safety, all the design and operation works should be abided by the rules, especially at underground and closed space. 

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