Rock core drilling and sampling device under microgravity environment and sampling method

Abstract

The invention discloses a rock core drilling and sampling device under a microgravity environment and a sampling method and relates to the technical field of rock sampling. The rock core drilling andsampling device under the microgravity environment comprises a main carrier, a core drilling and sampling system, a control system, a glue injection system and an automatic anchoring rod system. The core drilling and sampling system is arranged in the middle of the main carrier and used for drilling a rock sample. The glue injection system is used for squeezing bonding glue out to bond the main carrier with the rock. The automatic anchoring rod system can be used for drilling the rock and forming rock holes. The glue injection system is also used for injecting glue into the rock holes. The control system is connected to the core drilling and sampling system, the glue injection system and the automatic anchoring rod system and used for controlling the core drilling and sampling system, theglue injection system and the automatic anchoring rod system to work. The sampling method is applied to the rock core drilling and sampling device under the microgravity environment. The provided rockcore drilling and sampling device under the microgravity environment and the sampling method can achieve rock sampling fast and efficiently under the microgravity environment.

Description

technical field [0001] The invention relates to the technical field of rock mass sampling, in particular to a rock mass drilling core sampling device and a sampling method in a microgravity environment. Background technique [0002] Sampling technology is one of the important contents of extraterrestrial body detection. By analyzing star soil, huge topics such as planet formation, life evolution, and the correlation between extraterrestrial and earth can be studied, which is of great value and significance to human beings. From the collection of artificial lunar soil by Apollo-11 in the United States in 1969, the unmanned sampling of the lunar surface by the former Soviet Union’s Luna series in the 1960s and 1970s, and the asteroid sampling by the SD2 sampler in the ESA Rosetta exploration plan in 2004. Drilling methods continue to develop, but core sampling in microgravity still faces many technical difficulties. Since the escape velocity of asteroids is at the cm / s level, ...

AI Technical Summary

Problems solved by technology

From the United States Apollo-11 artificial lunar soil collection in 1969, unmanned sampling of the lunar surface by the Luna series of the former Soviet Union in the 1960s and 1970s, and the sampling of asteroids by the SD2 sampler in the ESA Rosetta exploration program in 2004, Drilling methods continue to develop, but core sampling in microgravity still faces many technical difficulties. Since the escape velocity of asteroids is at the cm / s level, the interaction force generated between the drill bit and the star is likely to make the drill core The drilling equipment is pushed away from the surface, resulting in drilling failure

At present, the anchoring system is mainly used to solve the problem of insufficient WOB. The existing anchoring methods can only provide a small WOB, such as the dominant wheel method, clamping method, harpoon method, drilling method, self-opposed system, Fluid system; either it is difficult to control the drilling direction, such as thruster method, spacecraft dynamic method; or it is only suitable for special star environment, such as envelope method and magnetic anchoring method

In order to effectively carry out drilling core sampling in microgravity environment, it is necessary to invent a new sampling method and sampling device to overcome the problems of insufficient WOB, stable WOB, and environmental adaptation.

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