Anti-corrosion and high-strength anchor rod and method for reinforcing high and steep slope in geotechnical engineering
A technology for high and steep slopes and geotechnical engineering, which is used in infrastructure engineering, excavation, sheet pile walls, etc. question
Active Publication Date: 2021-06-11
CHINA THREE GORGES CORPORATION
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Problems solved by technology
As an effective support method, bolt support can significantly improve the stability of surrounding rock, and has the advantages of low support cost, less labor intensity and convenient construction, which greatly improves the economic benefits of water conservancy and hydropower projects. Anchor bolts have been under complex geotechnical environment and high stress for a long time, especially the environment of anchorage structures in high and steep slopes is extremely complex. Electrochemical corrosion, localized corrosion or stress corrosion, which will affect the long-term effectiveness of the anchor rod, and then lead to slope damage, which will adversely affect the long-term safety of water conservancy and hydropower projects, and threaten the economic benefits of water conservancy and hydropower projects and people's well-being. Safety of life and property
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[0047] Such as Figure 1~Figure 6 Among them, a corrosion-resistant high-strength anchor for the reinforcement of high and steep slopes in geotechnical engineering, which includes an anchor 1, an anti-corrosion component 2, a tensile component 3 and a grouting device 4; the casing 21 of the anti-corrosion component 2 and the The anchor rod 1 is socketed, the anti-corrosion layer 22 is set between the anchor rod 1 and the casing 21, and the multiple tensile rings 33 of the tensile component 3 are sleeved outside the casing 21 to connect with it, and the tapered anchor head 31 and the anchor rod 1 One end is connected, the grouting device 4 is located at the other end of the anchor rod 1, and the structure is simple. By setting the sleeve 21 outside the anchor rod 1, and filling the anti-corrosion layer 22 between the anchor rod 1 and the sleeve 21, the expansion shell anchor 11 of the anchor rod 1 is connected with the conical anchor head 31, and the conical anchor head 31 is l...
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The invention discloses an anti-corrosion and high-strength anchor rod for reinforcing a high and steep slope in geotechnical engineering. The anchor rod comprises an anchor rod body, an anti-corrosion component, a tensile assembly and a grouting device, wherein the anchor rod body is sleeved with a casing pipe; an anti-corrosion layer fills the space between the anchor rod body and the casing pipe; an expansion shell anchoring part of the anchor rod body is connected with a conical anchoring head; a tensile hook is arranged in a groove hole of the conical anchoring head; and the grouting device is connected with a rock wall. Mortar is injected into an anchor hole along a grouting pipe to wrap the anti-corrosion component and the tensile assembly, so that the strength is high, and the anchor rod body is effectively prevented from being corroded. The problems that the tensile property is reduced and the validity period of the anchor rod is shortened as the overall structural strength of an original anchor rod is affected by corrosion are solved, and the anchor rod has the characteristics of being simple in structure, good in tensile property, capable of avoiding failure, prolonged in validity period and easy and convenient to operate.
Description
technical field [0001] The invention belongs to the technical field of geotechnical engineering reinforcement, and relates to an anti-corrosion high-strength bolt and a method for reinforcing high and steep slopes of geotechnical engineering. Background technique [0002] In the field of engineering construction, bolts have become the main means of strengthening high slopes, underground caverns and structures in my country's water conservancy and hydropower projects. As an effective support method, bolt support can significantly improve the stability of surrounding rock, and has the advantages of low support cost, less labor intensity and convenient construction, which greatly improves the economic benefits of water conservancy and hydropower projects. Anchor bolts have been under complex geotechnical environment and high stress for a long time, especially the environment of anchorage structures in high and steep slopes is extremely complex. Electrochemical corrosion, local...
Claims
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IPC IPC(8): E02D17/20E02D5/74
CPCE02D17/20E02D5/74E02D2250/003E02D2600/30
Inventor 孙志禹向欣李晶华戴凌全牛玉龙
Owner CHINA THREE GORGES CORPORATION