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Spiral soil-squeezing downhole rock embedding device and pile forming method

A helical and down-the-hole technology, which is applied to drilling equipment and methods, earthwork drilling, and driving devices for drilling in boreholes. environmental effects

Active Publication Date: 2016-12-21
东营正诺技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the construction of rock-socketed piles with a rock bearing capacity greater than 500Kpa, ordinary long auger drilling rigs cannot be completed independently, and there are many deficiencies in the construction of pneumatic down-the-hole hammer and manual hole digging. The invention provides a method to ensure construction quality and improve construction quality. Efficiency, a screw-squeezing submerged hole rock-socketing device that meets the requirements of energy saving and environmental protection

Method used

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  • Spiral soil-squeezing downhole rock embedding device and pile forming method
  • Spiral soil-squeezing downhole rock embedding device and pile forming method
  • Spiral soil-squeezing downhole rock embedding device and pile forming method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1— Figure 7 As shown, the spiral earth-extruding down-the-hole rock-socketing device consists of a gyrator (1), a standard earth-extruding drilling tool (2), an impactor (3) and a drill bit (4). The components are torsionally transmitted through pin keys, and the bolts are connected to form a rigid body. When working, the gyrator is connected to the high-torque screw power head device, and at the same time completes the conversion function of the hydraulic oil of the impactor.

[0040] The standard soil extrusion drilling tool (2): includes standard flange (201), high-pressure oil pipe (202), soil extrusion drilling tool blade (203), inner pipe I (204), outer pipe (205) and reinforcement plate (206); The earth-squeezing drilling tool blade (203) is assembled and welded on the outer pipe (205) with equal pitch, and the inner pipe I (204) is installed in the outer pipe (205) and is coaxial with the outer pipe (205). Rib (206) is connected with outer pip...

Embodiment 2

[0049] like Figure 8 Shown, a kind of spiral extruding submerged hole rock-socketed pile forming method, the method is as follows:

[0050] 1) The site is leveled, and the piles are measured, sampled and checked. Using the high torque (output torque above 150KN·M) power head screw pile driver, the concrete delivery pump, the screw squeeze soil submerged hole rock-socketing device and other related facilities are connected and installed as a complete set. Connect the screw-screw submerged-hole rock-socketing device with the power head of the screw pile machine and the hydraulic control system, connect the high-pressure oil inlet and outlet pipes of the impact device with the accumulator of the hydraulic control system, and align the rock-socketed pile position; the rock-socketed pile is that the rock bearing capacity of the pile-bearing layer is greater than 500Kpa. like Figure 8 (a).

[0051] 2) The screw-squeezing submerged-hole rock-socketing device, driven by the powe...

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Abstract

The invention relates to a spiral soil-squeezing downhole rock embedding device and a pile forming method. The spiral soil-squeezing downhole rock embedding device is composed of a rotating unit, a standard soil squeezing drill rig, an impactor and a drill bit. The rotating unit is mounted at the upper end of the standard soil squeezing drill rig. The standard soil squeezing drill rig and the impactor are connected with an upper connecting plate through a standard flange. The impactor and the drill bit are positioned through a guiding spline between a lower body and an upper body, and the lower body, a pile casing and the upper body are connected into a whole through bolts and flanges. An impacting unit mounted in the impactor is movably connected with the upper body, and an inner tube II penetrates through the impactor and the drill bit. By means of the pile forming method, a rock-embedded pile with the rock bearing capacity larger than 500 Kpa is constructed, the construction quality is guaranteed, construction efficiency is improved, and the requirements for energy saving and environmental protection are met.

Description

technical field [0001] The invention relates to the field of pile foundation construction, in particular to a screw-extruded submerged-hole rock-socketing device and a pile-forming device that integrates spirally extruding soil into holes in soft rock layers, impacting and rotating holes in hard rock layers, and pumping concrete into piles. method. Background technique [0002] In the construction of pile foundations, rock-socketed piles (rock bearing capacity greater than 500Kpa) occupy a large share. Among the existing pile foundation construction equipment, most of them are pneumatic DTH hammers, and manual digging also has a certain market share. For rock-socketed piles with a pile diameter not greater than 800mm, a pneumatic down-the-hole hammer is often used to form holes, and then special equipment is used to pour concrete into piles. In the process of hole formation, the impact energy of the pneumatic down-the-hole hammer is used to break the hard rock volume into d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/16E21B7/00E21B10/62E21B10/44E02D5/36
CPCE02D5/36E21B4/16E21B7/005E21B10/44E21B10/62E21B17/22
Inventor 刘守进薛淑华郭海艳张桂芳王国岐路守园鲁春新王兴恺徐波任宪恒沈洪贤李岚徐嘉美管桂芝杨鑫杜啸汪美娜卜艳娇郑宏俊王智超李殊睿孙君
Owner 东营正诺技术服务有限公司
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