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Reaming drill rod with spalling rock breaking function

A technology of reaming drilling and expansion cracking, which is applied to drill pipes, drill pipes, drilling tools, etc., can solve the problems of unsatisfactory rock breaking efficiency, heavy load of drill pipes, complicated structure, etc., and achieves good alignment and simplification. structure, the effect of improving the bursting efficiency

Pending Publication Date: 2022-08-02
TAISHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the above scheme can realize the expansion and cracking action, it is equipped with multiple splitting two-way oil cylinders along the axial direction of the drill pipe. Each splitting two-way oil cylinder needs to be connected to the corresponding oil circuit. The structure is relatively complicated, the load of the drill pipe is heavy, and the cost is high. ; Moreover, the top block of the splitting two-way oil cylinder is in surface contact with the borehole, and repeated actions of multiple top blocks are required to achieve splitting, and the rock-breaking efficiency cannot meet the requirements

Method used

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  • Reaming drill rod with spalling rock breaking function
  • Reaming drill rod with spalling rock breaking function
  • Reaming drill rod with spalling rock breaking function

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Embodiment 1

[0030] This embodiment provides a reaming drill pipe with the function of bursting and breaking rock, such as figure 1 and figure 2 As shown in the figure, it includes a drill rod body 1, a pushing mechanism, and a bursting head 6. The pushing mechanism is installed in the drilling rod body 1, and a plurality of bursting heads 6 are evenly arranged along the circumferential direction of the drilling rod body 1, and the pushing mechanism is connected by a connecting rod assembly. Head 6, the pushing mechanism can drive the expansion head 6 to move to the outside or inside of the drill rod body 1.

[0031] Specifically, with figure 1 The directions shown are for reference, that is, when the drill rod body 1 is in a vertical state, one end is the top and the other end is the bottom. The drill rod body 1 has an installation cavity inside. The drill rod body 1 is provided with a plurality of through grooves at circumferential intervals near the bottom. The specific number of the...

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Abstract

The invention discloses a chambering drill rod with a spalling rock breaking function, and relates to the technical field of well building equipment, the chambering drill rod comprises a drill rod body, a pushing mechanism is coaxially arranged in the drill rod body, the pushing mechanism is circumferentially connected with a plurality of spalling heads through a connecting rod assembly, and the pushing mechanism can drive the spalling heads to move towards the outer side or the inner side of the drill rod body. The multiple spalling heads are connected with the same propelling mechanism, so that the load of the drill rod is reduced; and the rock breaking efficiency of the raise boring machine is improved in cooperation with the spalling head structure.

Description

technical field [0001] The invention relates to the technical field of well construction equipment, in particular to a reaming drill pipe with the function of expanding and breaking rock. Background technique [0002] Expansion cracking utilizes the physical properties that the tensile strength of the rock is much lower than the compressive strength, and applies pressure to the hole wall through the expander. When the pressure reaches the tensile strength of the rock, the rock is broken. However, the current ripper has problems such as heavy drill pipe load and low rock breaking efficiency. For example: the prior art discloses a ripper, which includes a drill pipe, one end of the drill pipe is provided with a drill bit, the other end of the drill pipe is provided with a rotary joint, and the drill pipe is axially embedded with a bidirectional oil cylinder for splitting; The splitter drills the face or boulder through the drill bit, and then expands the hole drilled by the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/28E21B17/00E21B12/00
CPCE21B7/28E21B17/00E21B12/00
Inventor 胡修坤刘志强孟晓军宋朝阳尹纪财宋涛尹娇
Owner TAISHAN UNIV
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