A rotary grouting anchor cable drill body and construction technology of rotary grouting anchor cable

A technology of anchor cable and drill body, which is applied in the direction of liquid/gas jet drilling, drill bit, drill pipe, etc., which can solve the problems of slow construction speed and high requirements for construction operation conditions, and achieve reasonable cost, reduce surrounding disturbance, and high practicality value effect

Active Publication Date: 2016-05-18
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pipe drilling has higher requirements on drilling rigs and construction conditions, and the construction speed is slower.

Method used

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  • A rotary grouting anchor cable drill body and construction technology of rotary grouting anchor cable
  • A rotary grouting anchor cable drill body and construction technology of rotary grouting anchor cable
  • A rotary grouting anchor cable drill body and construction technology of rotary grouting anchor cable

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Effect test

Embodiment Construction

[0033] Such as figure 1 The rotary grouting anchor cable drill body shown is composed of a double-pipe rotary grouting drill pipe, a variable-diameter linkage slotted drill pipe, an anchor head and a back-sealing steel ball. The rear end of the double-pipe rotary grouting drill pipe is connected to the front end of the variable-diameter linkage slot drill pipe, and the rear end of the variable-diameter linkage slot drill pipe is connected to the anchor head. The connection of grooved drill rods.

[0034] The double-pipe rotary jet drill pipe includes the rotary jet hole 9, the rotary jet drill pipe 13 and the inner pipe 14. The drill pipe 13 passes through, and the rotary nozzle hole 9 is a through hole penetrating through the rotary nozzle drill pipe 13 and the inner pipe 14; , the front end of the linkage slot drill rod 10 is provided with an inner hole, the inner hole is an inner hole that can match the rear end of the rotary jet drill rod 13, and the rear end of the inne...

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Abstract

The invention belongs to the field of building construction, is suitable for the technical field of rotary spraying anchor cable construction and provides a rotary spraying anchor rope drill body and a construction process of a rotary spraying anchor rope. The rotary spraying anchor rope drill body comprises a double-pipe rotary spraying drill rod, a diameter-variable linkage clamping groove drill rod, an anchor head and a bottom sealing steel ball, the front end of the double-pipe rotary spraying drill rod is connected with the front end of the diameter-variable linkage clamping groove drill rod, the rear end of the diameter-variable linkage clamping groove drill rod is connected with the anchor head, and the bottom sealing steel ball is positioned at a joint of the double-pipe rotary spraying drill rod and the diameter-variable linkage clamping groove drill rod. The construction process includes 1), making a steel stranded wire; 2), machining an anchoring body; 3), drilling to form a hole; 4), feeding the steel stranded wire; 5), inputting the bottom sealing steel ball; 6), expanding the hole through rotary spraying; 7), tensioning and locking the anchor rope. The rotary spraying anchor rope drill body is convenient to use and high in construction efficiency; by the construction process, drilling speed can be increased effectively, process steps can be simplified, disturbance to the surrounding can be reduced, and nearby buildings and structures can be protected effectively.

Description

technical field [0001] The invention belongs to the field of building construction, and is suitable for the technical field of rotary grouting anchor cable construction. Background technique [0002] Ordinary high-pressure rotary grouting anchor cable construction is to use the rotary grouting drill bit passing through the anchorage bearing plate to drill while spraying, and the disturbance starts immediately during the drilling process, and the disturbance to the free section and the non-effective anchorage section is also large. It will cause unnecessary impact on the formation, and will increase the initial settlement of the formation outside the foundation pit. [0003] In order to avoid this situation, the process of drilling with the pipe to the anchorage section and then starting the rotary spraying is generally adopted. However, pipe drilling has higher requirements on drilling rigs and construction conditions, and the construction speed is slower. Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E02D15/04E21B17/18E21B7/18
CPCE02D5/74E02D15/04E02D2250/003E21B7/18E21B10/60E21B17/04E21B17/046E21B17/18
Inventor 王志超张莉莉李中元高慎伟菅宏孙康李之伟龚琦赵世明杨军春
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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