Special drill bit for underground pipeline exploration

Abstract

The invention discloses a special drill bit for underground pipeline exploration. The special drill bit for underground pipeline exploration comprises a drill bit body, wherein the drill bit body is cylindrical, a connecting part matched with a drill stem of a drilling rig is arranged on the upper portion of the drill bit body, and the lower end of the drill bit body is planar. A water jetting hole is formed in the center of the drill bit body, a water drainage groove is vertically formed in the outer wall of the drill bit body, a water guide groove corresponding to the water drainage groove is formed in the bottom face of the drill bit body, the inner side of the water guide groove is communicated with the water jetting hole, and the outer side of the water guide groove is communicated with the water drainage groove. The special drill bit for underground pipeline exploration has the advantages that because the drill bit body is cylindrical, and the lower end of the drill bit body is of a planar structure, the requirement for cutting soft soil and medium-hardness soil and the backfill requirement can be met, but hard components such as a metal pipeline will not be cut; when the drill bit encounters a hard component, the drill bit can only feed back hole bottom information to the ground surface but cannot cut the hard object, and thus damage to underground pipelines can be effectively avoided. The drill bit body is formed by machining ABS hard plastics, and the special drill bit for underground pipeline exploration is simple in structure, convenient to manufacture, safe in use and low in cost.

Description

technical field [0001] The invention relates to the technical field of underground pipeline exploration, in particular to a special drill bit for underground pipeline exploration. Background technique [0002] Underground pipeline survey is a technical means implemented to determine the properties and spatial location of underground pipelines, including two basic contents: the exploration of underground pipelines and the surveying and mapping of underground pipelines. Underground pipeline exploration is to understand the buried position, buried depth and related attributes of underground pipelines through on-site investigation and detection, find out the plane position, direction, buried depth (or elevation), specifications, properties, and materials of underground pipelines, and draw underground pipeline diagrams , and set up mark points on the ground to express the spatial characteristics of the pipeline. [0003] At present, underground pipeline detection methods mainly ...

AI Technical Summary

Problems solved by technology

When the existing engineering drill bit is drilling, the pipeline is often damaged due to inaccurate drilling process data, inexperienced construction personnel or insufficient estimation. The existing engineering drill bit is no longer suitable for underground pipeline exploration.

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