Vertical pipe vacuum pre pressing bidirectional slip casting method and sealed slip casting system thereof

A grouting system and grouting technology, applied in mining equipment, earthwork drilling, bolt installation, etc., can solve problems such as stress loss, anchor cable body corrosion, channel grouting is not dense, failure, etc., to achieve enhanced integrity, Promotes the effect of increasing the vacuum degree
CN100398782CInactive Publication Date: 2008-07-02LIUZHOU OVM MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
LIUZHOU OVM MASCH CO LTD
Publication Date
2008-07-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention is a vertical-tube vacuum-precompression bidirectional slip casting method, comprising the steps of making hole, installing seal slip casting system, sealing orifice, normal-pressure slip casting, prevacuumizing, vacuum slip casting, reverse slip casting, and so on; the seal slip casting system includes anchor hole, anchorage cable, orifice grout sealer, vacuum pump, slip casting pump, sealing plate, slip casting tube and vacuum tube, the orifice grout sealer situated at the orifice of the anchor hole, the sealing plate situated on the end surface of the orifice, epoxy resin poured between the sealing plate and the orifice grout sealer, the orifice grout sealer being bowl-structured, and one or more orifice grout sealers linked in series in the same or counter direction and closely fitting anchor hole wall, the vacuum tube passing through the sealing plate and the orifice grout sealer to reach the top of the anchor hole, and the slip casting tube passing through the orifice grout sealer and 30-40cm higher than the internal end surface of the orifice grout sealer.
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Description

1. Technical field:

[0001] The invention relates to a construction method, in particular to a grouting construction method with a certain upward angle of prestressed anchor cable construction and a sealed grouting system. 2. Background technology:

[0002] In the current practice of underground geotechnical engineering, due to the stability and durability requirements of underground caverns, traffic tunnels and military caverns, supporting measures must be taken for the surrounding rock. Although the means of support and construction methods are different, from the comprehensive consideration of the support content, it should include anchor rods or anchor cables, and the anchor rods or anchor cables of 0~180 (counterclockwise)β€”β€” That is to say, the prestressed anchor cable or bolt with a certain elevation angle generally adopts the normal pressure grouting method from the hole to the bottom of the hole, but due to the incomplete grouting of the hole and the "air cushion" eff...

Claims

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