Grouting anchor cable in hole

Abstract

An in-hole grouting anchor cable consists of an anchor cable body, an anchor cable anchorage, a tray, an in-hole grout stop component, a rigid core pipe, and the like. The grout stop component in the hole is composed of an inner casing, an outer casing, a tight metal pipe, an elastic casing and a hard casing. The hard casing, the elastic casing and the outer casing are connected end-to-end from bottom to top and are sequentially sleeved on the anchor cable body. The lower end of the hard casing is supported on the pallet. The clamp metal tube and the inner and outer sleeves are at the same position of the anchor cable; the clamp metal tube is set on the outer sleeve, and the inner sleeve is sleeved on the rigid core tube; the inner and outer sleeves are flexible pipes, and the clamp metal The pipe tight hoop is plugged in the inner and outer gaps of the steel wire of the anchor cable body. The anchor cable can be sealed at any position in the borehole, and the hole is tightly sealed, which can prevent grout leakage from cracks around the hole and improve the grouting effect; the structure is simple and the installation is convenient. The anti-grouting structure in the hole of the anchor cable is not only used for sealing the hole of the hollow grouting anchor cable for mining, but also can be used for sealing the hole of the hollow threaded grouting bolt and blocking water for ordinary anchor cables / bolts.

Description

technical field [0001] The invention relates to the technical field of mine shaft roadway support and rock-soil anchorage, in particular to a kind of project such as mine shaft roadway, tunnel, slope, etc., which uses hollow anchor cables to block and stop grouting in boreholes to prevent grout from flowing through the orifice. Grouting and grouting anchor cables in holes leaking from cracks. Its anti-grouting structure can also be used for grouting in holes during grouting of hollow bolts, and for hole sealing and water blocking of ordinary anchor cables / bolts. Background technique [0002] At present, anchoring and grouting support technology is widely used at home and abroad to strengthen geotechnical engineering such as mine shafts, tunnels and slopes. During construction, hollow grouting anchor cables / bolts generally use hollow conical rubber plugs or wound veils, hemp ropes, etc. for sealing and grouting. This method of sealing holes is very effective when the boreho...

AI Technical Summary

Problems solved by technology

However, it is not possible to use it to seal the internal and external gaps between the steel wires of the anchor cable strands.

In addition, it is suitable for wearing multi-strand steel strands, not suitable for coal mine roadway support

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