Sinorock SDA bolt has safe, reliable and convenient characteristics

21/giu/2017 11:46:02 sinorockzqq Contatta l'autore

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SDA bolt is a kind of hollow bar with continuous thread, one end connects to drill machine and another one connects to one-off drill bit. When drilling, slurry can be injected through hole of bolt, which realizes integrated construction of drilling, grouting and anchoring. After grouting, it can ensure cement mortar and cement paste wrapping overall length of SDA bolt, contacting with surrounding soil body and then forming a combination. When grouting, slurry is from bottom of hole, stop-grouting plug is installed to realize pressure grouting, which can fill gaps in sandy gravel stratum, enlarge diffusion radius and anchoring range. So, SDA bolt has good anchoring effect in loose stratum.

A lot of experience have shown that SDA bolt in loose stratum has safe, reliable and convenient characteristics and can be widely used in urban engineering construction.

Sinorock self-drilling anchor embodies drilling, grouting and anchoring as a whole. Widely used as an efficient anchoring means, in tunnel pre-support, slope, coast, mine, water conservancy projects, building foundation, roadbed reinforcement and geological diseases treatment such as landslip, crack, sink age. It’s irreplaceable in narrow construction environment.

Sinorock Self drilling hollow anchor with drill bit can drill hole with common drilling machine. When reaching to designed location, self drilling anchor and drill bit are left in rock body, grouting can be proceeded directly. Unlike pipe shed, self drilling hollow anchor has injected holes on the top of drill bit, slurry is from bottom to eyelet, then diffuses all around to reinforce surrounding rock. Without pulling out hollow anchor bar and drill bit, it has strong adaptation on surrounding rock, even drilling and grouting at loose and broken surrounding rock.

 

Self drilling hollow anchor in loose surrounding rock tunnel can be used as pipe shed to support in advance, which can solve construction problems of hole-forming and installation.

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