Hollow bars can be installed in sites with weak rocks

05/set/2016 11:49:07 hollowbar Contatta l'autore

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Hollow bars has two performances: drilling and grouting. It features a hollow bore for flushing, or simultaneous drilling and grouting. It can be installed in sites with weak rocks, loose soil, weathered layer, sand with stone layer where it is so difficult to create a hole in complex formation. Self drilling hollow anchor bar system is the rock and soil reinforcement rods structure. It is one of the main supporting forms of rock slope for underground,plays an important role on stability of civil engineering maintenance, especially it has obvious effect in the joints and fissures in rock mass and anchor rod on rock reinforcement.The self drilling anchor system of the alloy bit has strong penetrating power, under the action of rock drill, can easily penetrate all types of rock mass, and using the exhaust of the anchor head up thoroughly solve the problem above the horizon of the grouting exhaust.

The Sinorock self drilling hollow bar system is for stabilization of excavations and consists of the insertion of steel bars by mechanical procedures into the ground.

The Sinorock self drilling hollow bar system has historically been known as a “self-drilling anchoring” because the hollow fully-threaded bar serves as both the drill string and the grouted anchor, thus installation is performed in a single operation. The sacrificial drill bit is threaded onto the end of the anchor bar and left in place following drilling. The drilling fluid (air, water, or grout) is introduced through the hollow bar and allows the spoils to flush from the borehole.

Sinorock self drilling hollow bar system is a great and fast solution for rock anchoring. Sinorock self drilling hollow bar is suitable for broken rock, loose soil and conditions which are difficult to drill holes, such as fracture zones, decayed rock, gravel, sandy gravel, backfill ground.It can be used in different complicated conditions.

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