Recoverable side slope anchor rod grout stop device

A technology for preventing slurry and bolts, which is applied in the direction of installing bolts, sheet pile walls, mining equipment, etc., and can solve problems such as no guidance plan
CN106436705AActive Publication Date: 2017-02-22河北建科唐秦建筑科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
河北建科唐秦建筑科技有限公司
Publication Date
2017-02-22

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Abstract

A recoverable side slope anchor rod grout stop device is provided with a casing pipe, a sliding sleeve, a check ring, a compression spring, a switch mechanism, a grout stop face and a plurality of frameworks. The grout stop face is formed by annularly distributing and combining a plurality of sector-ring-shaped steel sheets. Every two adjacent sector-ring-shaped steel sheets are hinged to each other, and each sector-ring-shaped steel sheet is connected with the check ring. The frameworks and the sector-ring-shaped steel sheets are in one-to-one correspondence. One end of each framework is hinged to the sliding sleeve, and the other end of each framework is hinged to the sector-ring-shaped steel sheet corresponding to the framework. A grout inlet hole connected with a grouting pipe and an exhaust hole connected with an exhaust pipe are formed in the grout stop face, and the casing pipe is provided with a groove which cooperates with a switch to enable the sliding sleeve to be located on the casing pipe to open the grout stop face. During anchor rod grouting, an anchoring segment can be blocked, a bonding material is prevented from flowing towards the free end, the stress structure of an anchor rod is optimized, grouting materials are saved, and the anchoring effect is increased; and after the grouting task is completed, the grout stop device can be recovered by closing the sector-ring-shaped steel sheets through the switch mechanism.
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Description

technical field

[0001] The invention relates to a slope anchor slurry stop device, in particular to a retractable slope anchor slurry stop device, which belongs to the field of slope support. Background technique

[0002] As an important form of geotechnical engineering reinforcement, bolt support has been widely used in the field of geotechnical engineering due to its advantages of safety, low cost, and convenient construction. Grouting is an important process of bolt support , the method widely used at present is to fill the borehole from the bottom of the hole until it flows out from the orifice, and the free end and the anchorage section are filled. This is not only wasteful, but also directly affects the transmission of the bolt force, thereby affecting the reinforcement effect of the bolt. .

[0003] The inventor retrieved the following relevant patent documents: CN2714627Y discloses a grout hydraulic tight ring type anchor grout stop device, which consists of a front...

Claims

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