Construction process for jet grouting anchor rod

A construction technique, a technology of jet grouting anchor rods, which is applied in the direction of installation of anchor rods, foundation structure engineering, sheet pile walls, etc., can solve the problems of poor anchoring effect and achieve good anchoring effect

Active Publication Date: 2009-09-16
SHANGHAI FOUND ENG GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to provide a construction technology of rotary grouting bolt, which can solve the technical problem of poor anchoring effect of the two anchor types of grouting type or mechanical type

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0024] Rotary spraying bolt construction technique of the present invention: comprise the following steps:

[0025] 1. Stake out according to the design requirements

[0026] 2. Rig positioning

[0027] 3. Drilling

[0028] 4. Shotcrete

[0029] 5. Rotary jet lift

[0030] 6. Secondary drilling

[0031] 7. Second shotcrete

[0032] 8. Secondary rotary spray lift

[0033] 9. Rod body assembly and embedding

[0034] 10. ...

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PUM

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Abstract

The invention relates to a construction process for jet grouting anchor rod, which comprises the following detailed steps of: 1. setting out according to design requirements; 2. positioning a drilling machine; 3. drilling; 4. guniting; 5. lifting by jet grouting; 6. drilling for a second time; 7. guniting for a second time; 8. lifting by jet grouting for a second time; 9. installing and embedding a rod body; and 10. pouring and capping. The construction process can overcome the technical problem that the anchoring effect of slip-casting type or mechanical type anchoring is poor, and breaks through the tradition, and the test demonstrates that the anchoring effect is better than that of slip-casting anchoring.

Description

technical field [0001] The invention relates to a rock-soil anchoring construction method in the construction of slopes, tunnels, underground works, mines and the like. Background technique [0002] At present, geotechnical anchoring technology is widely used in the construction of slopes, tunnels, underground works, mines, etc. It is an effective method to improve the stability of geotechnical engineering and solve complex geotechnical engineering stability problems. Usually rock and soil bolt adopts two types of grouting type or mechanical type. Its rock-soil anchorage effect is poor. Therefore, it is necessary to open up the mind, break the tradition, and develop a set of jet grouting bolt construction technology. After testing, the anchoring effect is slightly better than that of the grouted bolt. [0003] Scope of application: [0004] As a new technical measure for slope reinforcement and foundation pit excavation, the jet grouting bolt has remarkable effect, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E21D20/02
Inventor 李耀良赵伟成袁芬张晓锋
Owner SHANGHAI FOUND ENG GRP
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