Precise control method of hole-forming line pattern of anchor cable on high and steep rock slope with fractures

A rocky slope and control method technology, applied in excavation, construction, infrastructure engineering, etc., can solve problems such as increased anchor cable stress, uncoordinated support, safety accidents, etc., to reduce construction difficulty, real-time Strong, the effect of preventing safety accidents

Active Publication Date: 2021-11-05
中建五局第三建设有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

During on-site construction, due to the repeated vibration of the drilling rig, the angle of the drilling hole often deviates from the original design inclination, resulting in an increase in the additional stress of the anchor cable and uncoordinated support, which will seriously cause the anchor cable to fail and cause a safety accident

Method used

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  • Precise control method of hole-forming line pattern of anchor cable on high and steep rock slope with fractures
  • Precise control method of hole-forming line pattern of anchor cable on high and steep rock slope with fractures
  • Precise control method of hole-forming line pattern of anchor cable on high and steep rock slope with fractures

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Embodiment Construction

[0031] The present invention is further described below with reference to specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples are not intended to limit the present invention.

[0032] like Figures 1 to 6 As shown in the figure, a method for precise control of the pore-forming alignment of an anchor cable on a high and steep rock slope with developed fractures includes the following steps:

[0033] a. Position the anchor cable hole 6, and determine the inclination and diameter of the anchor cable hole 6. With the anchor cable hole 6 as the center, three reinforcement holes 7 tangent to the outer diameter of the anchor cable hole 6 are arranged. The connecting line of the center points of the reinforcement hole 7 is an equilateral triangle, and the diameter of the reinforcement hole 7 is determined;

[0034] b. Construction of reinforcement hole 7:

[0035] Fix the angle fixer on the slope, adju...

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Abstract

A method for precise control of the hole-forming line shape of the anchor cable on the high and steep rock slope with cracks. The micro-hole drilling machine is fixed in the internal groove of the angle fixer to form a micro-reinforced hole. The hole is formed into a simple triangle and then split. Grouting, use splitting grouting to make the effective radius of the reinforcement hole tangent to the anchor cable hole in the center of the simple triangle geometry, and finally use the angle fixer to fix the optical fiber sleeve and perform percussion drilling to form the anchor cable hole. The method of the invention is designed for the control of the hole-forming line pattern of the anchor cable. On the basis of ensuring the normal construction of the hole-forming anchor cable in the slope with developed cracks, the drilling quality is improved and the hole-forming angle and path are controlled.

Description

technical field [0001] The invention belongs to the technical field of underground engineering construction and support, and particularly relates to a method for precise control of the hole formation of an anchor cable on a high and steep rocky slope with developed fissures. Background technique [0002] The anchor cable technology originally originated from the most basic form of support in coal mine roadway support. After continuous improvement and innovation, it has been widely used in foundation pit engineering, support engineering, underground engineering and other fields. Anchor cable anchoring technology is an effective support technology. The force transmission in anchor cable anchoring technology is very complex. Affected by various factors such as materials, slope properties, buried depth and length, the anchor cable is fixed on the slope through the outer end. , the other end is anchored in the stable rock mass within the sliding surface and passes through the pre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E02D17/20
CPCE02D5/74E02D17/20E02D2600/10E02D2600/30E02D2600/40
Inventor 何昌杰李建新贺泳超雷勇陈秋南黄小城
Owner 中建五局第三建设有限公司
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