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Bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method and system

A technology of rotary drilling rig and construction method, which is applied in the directions of rotary drilling, rotary drilling rig, drilling equipment and methods, etc., can solve the problems of difficulty in forming holes for pile foundations, low construction efficiency, and inability to construct, and achieve economic benefits. Considerable, low construction cost and fast turnaround

Active Publication Date: 2020-02-11
赵立财
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem of large-scale sand gushing and collapse holes in pile foundation holes in unstable soil layers such as thicker sand layers and silty clay in a saturated water state, and the construction efficiency is low. The technical problem that the foundation hole is difficult to construct and cannot be constructed

Method used

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  • Bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method and system
  • Bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method and system
  • Bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method and system

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Embodiment 1

[0048] Such as Figure 1-10 As shown, the bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method provided in this embodiment includes the following steps:

[0049] S1. The site is level;

[0050] S2. After the rotary drilling rig is in place, process and manufacture the cutting casing system;

[0051] The cutting type casing system includes a power connector 3, a casing connector 4, a standard section casing 6, a cutting type bottom section casing 9 and an alloy cutting tool 10;

[0052] S3. Install the power connector 3 and the casing connector 4 on the rotary drilling rig in sequence; the upper end of the power connector 3 is connected to the rotary drilling head 2 of the rotary drilling rig, and the lower end is connected to the casing connector 4 ; Install the rotary drilling bucket 5 on the drill rod 1 of the rotary drilling rig;

[0053] Preferably, four symmetrical power connector support columns and four power connecto...

Embodiment 2

[0078] A bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction system is used to implement the bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method described in Embodiment 1. The system includes a rotary drilling rig and a cutting casing system; the specific structure of the rotary drilling rig can be the same as that of the existing machine, and the cutting casing system includes a power connector 3, a casing connector 4, a standard section casing 6, The cutting bottom section casing 9 and the alloy cutting tool 10; as for the specific connection relationship of these structures, the technical features and corresponding parameters have been described in detail above, and will not be repeated here.

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Abstract

The invention relates to the technical field of rotary excavating drilling rig whole guard barrel follow-up, in particular to a bridge pile foundation rotary excavating drilling rig cutting type whole guard barrel follow-up pile forming construction method and system. According to the method, a rotary excavating drilling technology and a cutting type whole steel guard barrel assembly structure are combined; soil is sunk by rotary excavating, drilling and cutting; and a guard barrel is designed to be of a double-layer structure; the technical problems that when a drilling rig conducts drilling conduction on a nonresistant strata, hole collapse is serious, and the construction efficiency is low are effectively solved by the structural designs of a guard barrel embedded interface, a built-in pin shaft, a bottom joint mounting alloy cutter and the like and the mode that the guard barrel is quickly connected through a connecting guiding device and a spiral guiding device. The cutting type steel guard barrel can be used in a recycling ode, is low in relative cost and safe and efficient in construction, saves energy, and is environmentally friendly; site operation and construction are simple and convenient; the construction process can be mastered by an operator easily; and the pile foundation hole forming quality and the pile foundation pouring quality can be well guaranteed.

Description

technical field [0001] The invention relates to a rotary drilling rig full casing follow-up technology, in particular to a bridge pile foundation rotary drilling rig cutting type full casing follow-up pile construction method and system. Background technique [0002] At present, in view of the unstable stratum conditions such as deep burial depth, thick sand layer and saturated water state of silty clay in the stratum where the pile foundation is located, the soil around the hole wall is extremely unstable, and the rotary drilling rig drilling During construction, the surroundings of the hole wall will be subjected to the resultant force of earth pressure and water pressure, resulting in deformation around the hole wall and large-scale sand gushing and hole collapse. If percussion drilling is used for the construction of bridge pile foundations in this stratum, the ground often collapses in a large area, and holes cannot be formed, which endangers the personal safety of cons...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/38E02D5/66E21B3/00E21B7/02
CPCE02D5/385E02D5/665E21B3/00E21B7/02
Inventor 赵立财
Owner 赵立财
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