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Drilling-hole press-filling-concrete-pulp agitation base-enlarging method and apparatus

A technology for pouring concrete and mixing device, which is applied to drilling tools, drilling equipment, earthwork drilling, etc., can solve problems such as the influence of mixing and bottom expansion, unsatisfactory failure rate, and easy damage, and achieves simple structure, fast construction speed, Easy to operate effect

Active Publication Date: 2007-03-28
黑龙江东宇基础工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the hole reaming method commonly used in building pile foundations and the concrete pumping device of the drill pipe central pump for grouting and stirring bottom expansion declared by myself, the existence of the hydraulic cylinder of the device is in a bad working environment at the drill bit, and when the cylinder is stretched out, it will contact the sandy soil layer. Stir friction is relatively easy to damage, the failure rate is not ideal, and it has an impact on the bottom expansion process of stirring. The hydraulic oil pipe is along the outer wall of the drill pipe to the drill bit, and sometimes it is scratched by hard blocks in the soil layer and the drilling stops

Method used

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  • Drilling-hole press-filling-concrete-pulp agitation base-enlarging method and apparatus
  • Drilling-hole press-filling-concrete-pulp agitation base-enlarging method and apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Bore hole pressure grouting concrete grouting mixing bottom expansion method, when the drilling rig is drilling, inject cement slurry into the core tube of the drill pipe through the grouting pipeline installed on the elbow, and start the drill set on the upper part of the power head when drilling to the design depth The hydraulic cylinder pulls the wire rope through the anti-twist rotary head at the lower end of the piston rod of the hydraulic cylinder, and drives the flip-type drill bit to turn over. After the turned diameter exceeds the diameter of the drill pipe and meets the design requirements, it is lifted while rotating and expanding the bottom. After the sandy soil layer and the cement slurry are stirred and expanded to reach the design height, the hydraulic cylinder retracts and turns the drill bit to stop stirring and expands the bottom, and finally the concrete is poured while lifting the drill to form a pile.

Embodiment 2

[0031] In the method for drilling, pressurized concrete, grouting, stirring and expanding the bottom described in Example 1, when stirring and expanding the bottom, concrete is injected separately for stirring and expanding the bottom to form a pile.

Embodiment 3

[0033] In the borehole pressure grouting concrete grouting method for bottom expansion described in embodiment 1 or 2, when stirring and bottom expansion, cement slurry is injected separately for stirring and bottom expansion to form a pile.

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Abstract

The invention relates to boring pressing filling concrete grouting whisking enlarging base method and the device. While boring, filling cement slurry into the drilling stem core pipe, once reaching the designed depth, starting hydraulic ram on the power unit, pulling steel cable by screw-proof turret head to drive reversal drilling bit, and the diameter of reversing should exceed the designing request of drilling stem diameter, rotating and lifting. When the sand soil layer and cement slurry whisking enlarging base reaches the designed height, retracting the hydraulic ram and stopping whisking, filling concrete and lifting drill in peg. The invention could be used in construction of construction peg base.

Description

Technical field: [0001] The invention relates to a construction method and a device for building pile foundations. Background technique: [0002] At present, the hole reaming method commonly used in building pile foundations and the concrete pumping device of the drill pipe central pumping device for grouting, stirring, and bottom expansion declared by myself, the existence of the hydraulic cylinder of the device, the working environment at the drill bit is harsh, and when the oil cylinder is stretched out, it will contact the sandy soil layer. Stir friction is relatively easy to damage, the failure rate is not ideal, and it has an impact on the bottom expansion process of stirring. The hydraulic oil pipe is along the outer wall of the drill pipe to the drill bit, and sometimes it is scratched by hard blocks in the soil layer and the drilling stops. Invention content: [0003] The object of the present invention is to provide an automatic control of lifting, stirring, and ...

Claims

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Application Information

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IPC IPC(8): E02D5/44E21B11/00
Inventor 曹兴明
Owner 黑龙江东宇基础工程有限公司
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