Novel anchoring grouting anchor rod and construction method thereof

A grouting bolt, a new type of technology, applied in the installation of bolts, earth-moving drilling, mining equipment, etc., can solve the problems of grouting bolts and anchor withdrawal, and achieve the effect of ensuring filling and improving the effect.
CN108979692AActive Publication Date: 2018-12-11SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2018-12-11

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Abstract

The invention discloses a novel anchoring grouting anchor rod and a construction method thereof. The novel anchoring grouting anchor rod is formed by a grouting system, an anchoring system and a fastening system. The grouting system comprises a cover, a vent hole, a grouting hole, a slurry plug, and overflow holes and various parts work together to ensure that slurry is full and tightly bonded. The anchoring system is formed by anchoring holes, a steel strand, a high-strength spring, an anchor claw, a rotating shaft and a steel strand clamp, initial anchoring force can be provided for the anchor rod, the anchor claw has barbs and rotates under the traction of the steel strand and closely attaches to a surrounding rock, and anchor removal is effectively prevented. The fastening system is formed by an anchor rod body, a slurry stop pad, a tray, a washer and a high-strength nut. After the slurry is solidified, the pre-stress can be provided for the grouting anchor to control the deformation of the surrounding rock. According to the invention, an anchor claw rotation design is employed, the anchor claw closely attaches to the surrounding rock, sufficient anchoring force is provided toprevent the anchor removal, and vent holes are set to ensure a pouring effect. The application defect of an existing grouting anchor is solved, and the novel anchoring grouting anchor rod and the construction method have the advantages of anchor removal prevention, high adaptability and good grouting effect.
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Description

technical field

[0001] The invention discloses a novel anchor-increasing grouting bolt and a construction method thereof, which are particularly suitable for stability control of surrounding rocks in geotechnical engineering such as mines and tunnels where the surrounding rocks are broken. Background technique

[0002] In recent years, bolt grouting reinforcement technology has been widely used in geotechnical engineering such as mines and tunnels with broken surrounding rocks. The supporting effect is good and the economic benefits are significant. The grouting anchor has many advantages in practical engineering: (1) The grouting anchor and the surrounding rock are bonded by grout, and the full-length bonded anchor system is formed after the grout solidifies, and the overall performance is better; (2) The grouting grout is Under the action of grouting pressure, it can be squeezed and expanded to fill the cracks and joints in the surrounding rock, preventing groundwater from...

Claims

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