Moon lunar soil shallow layer drilling and coring method

Abstract

The invention relates to a moon lunar soil shallow layer drilling and coring method, which relates to a moon unconsolidated formation lunar soil drilling exploration sampling method. The invention adopts a drill head to conduct center-drilling hole aiming at the characteristics that the moon shallow layer lunar soil is loose sand without bonding property, as the drilling deep-going of the drill bit, drilled dry loose rock cores are led to core collect through a coring cannula on the periphery of the drill bit, the lower portion of a screw thread drill bit of a drilling tool which uses the method of the invention is a drill bit vane, an upper bearing seat and a bearing are statically connected in a matching way, a connecting sleeve and a bearing are fixedly connected, the coring cannula is connected with screw threads of the connecting sleeve through the upper end of an outer pipe hole, and is sleeved on the periphery of the threaded rod drill bit, and the inner pipe hole of the coring cannula integrates rock cores. The moon lunar soil shallow layer drilling and coring method has innovative technology and outstanding technical effect, improves the maximum coring rate of 3.07% of the traditional drilling inner-tube coring method to 95%, comprehensively solves the difficult problems of coring in loose sand grain layers, and supplies a feasible moon lunar soil shallow layer drilling and coring method and an application drilling tool for lunar exploration geologic research.

Description

technical field [0001] The invention relates to a method for drilling and coring shallow layers of lunar soil, belonging to the field of geological drilling, and in particular to a drilling and sampling method for lunar loose layer lunar soil. Background technique [0002] The coring method that is currently used in the field of earth geological drilling is to use a core drill bit (that is, the drill bit has an inner diameter and an outer diameter). Then use the clamping device to lock the core that enters the core tube in the core tube and raise the ground to obtain the core. The coring method generally adopts single-action single-tube or single-action double-tube. [0003] Single-action single-tube drill bit drilling: When the core is filled with the core tube, the material is clamped, and the core is clamped by the friction between the material and the core, so as to break the core and extract the core. [0004] Drilling with single-action double-tube drill bit: mainly ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for drilling cores in the shallow layer of lunar soil to solve the problem of drilling cores from the extremely dry and loose shallow layer of lunar soil

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