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Novel percussion drill reverse circulation pile foundation drilling device and construction method

A drilling device and percussion drilling technology, applied in drilling equipment and methods, percussion drilling, drilling equipment, etc., can solve the problems of low drilling efficiency, low technical efficiency, and high cost of imported complete sets of equipment

Pending Publication Date: 2019-07-09
CHINA GEZHOUBA GROUP NO 5 ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a new type of percussion drill and reverse circulation pile foundation drilling device. This drilling device is aimed at the shortcomings of the existing technology such as the low efficiency of the traditional percussion drill positive circulation slag removal drilling technology and the high cost of complete sets of imported equipment. , to provide a new type of percussion drill reverse circulation slag removal drilling device, through the simple transformation of the traditional common percussion drilling equipment, it solves the problem of low efficiency of traditional percussion drilling rigs in hard rock geological large-diameter pile foundations

Method used

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  • Novel percussion drill reverse circulation pile foundation drilling device and construction method
  • Novel percussion drill reverse circulation pile foundation drilling device and construction method
  • Novel percussion drill reverse circulation pile foundation drilling device and construction method

Examples

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Effect test

Embodiment 1

[0025] see Figure 1-4 , a new type of percussion drill reverse circulation pile foundation drilling device, it includes a percussion drill 2, the percussion drill bit 3 of the percussion drill 2 is arranged inside the steel casing 1; inside the steel casing 1 and is located at the mud level The mud pipe 7 and the air pipe 6 are communicated below, the other end of the mud pipe 7 is connected with the slag removal separation device 4, and the other end of the air pipe 6 is connected with the air compressor 5 and ventilated to the inside of the pile hole mud; The slurry outlet 10 of the above-mentioned slag removal and separation device 4 is arranged directly above the steel casing 1, and allows the slurry to flow back to the pile hole. By adopting the reverse circulation pile foundation drilling device with the above-mentioned structure, an air lift reverse circulation system is formed by adding an air compressor 5, and the mud is sucked through the mud pipe 7, and the mud and...

Embodiment 2

[0031] The pile foundation drilling construction method of the novel percussion drill reverse circulation pile foundation drilling device, it comprises the following steps:

[0032] Step 1: Drilling with the percussion drill 2, and supplying wind force to the air pipe 6 through the air compressor 5 during the drilling process, and making the drilling form a gas lift reverse circulation;

[0033] Step 2: While ventilating, suck the mud through the mud pipe 7, and connect the mud to the slag removal and separation device 4;

[0034] Step 3: Start the slag removal and separation device 4, drive the eccentric wheel 8 through the motor 12, and then drive the filter screen 14 by the eccentric wheel 8, and then separate the mud and debris through the filter screen 14;

[0035] Step 4: The separated slag will be discharged through the slag outlet 11, and the separated mud will be recycled through the mud outlet 10 to return to the pile hole;

[0036] Step 5: After the drilling is com...

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Abstract

The invention provides a novel percussion drill reverse circulation pile foundation drilling device and a construction method. The novel percussion drill reverse circulation pile foundation drilling device comprises a percussion drill, and a percussion drill bit of the percussion drill is arranged in a steel casing; a mud pipe and an air pipe communicate with the positions, below a mud liquid level, in the steel casing, the other end of the mud pipe is connected with a slag removal and separation device, and the other end of the air pipe is connected with an air compressor and ventilates the interior of pile hole mud; a slurry outlet of the slag removal and separation device is arranged right above the steel casing, and the slurry flows back to a pile hole. The drilling device is a novel percussion drill reverse circulation slag removal drilling device aiming at solving the problems that a traditional percussion drill positive circulation slag removal drilling technology is low in efficiency, a whole set of import equipment is high in cost and the like in the prior art, and solves the problem that a traditional percussion drill is low in drilling efficiency of a large-diameter pilefoundation in the hard rock stratum geology by simple transformation on traditional common percussion drill drilling equipment.

Description

technical field [0001] The invention relates to the technical field of pile foundation drilling, in particular to a novel percussion drilling reverse circulation pile foundation drilling device and a construction method. Background technique [0002] At present, most domestic large-diameter pile foundations are constructed by percussion drilling combined with positive circulation slag removal technology. Although this technology has simple equipment and low technical difficulty in operation, the drilling efficiency is low, especially in hard rock formations. The footage is slow and has a negative impact on the construction period. Greater constraints. Now there are also large-scale complete sets of drilling slag cleaning devices imported from abroad, which have high drilling efficiency, but the equipment occupies a large area, which has great restrictions on the construction site, and the equipment is expensive and the construction cost is high, so it is not suitable for lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B1/00E21B21/06E21B21/14
CPCE21B1/00E21B21/14E21B21/065E21B21/066
Inventor 刘雄范晟杰汪波陈登志周克云杨孚平朱海燕孙向楠齐红军
Owner CHINA GEZHOUBA GROUP NO 5 ENG
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